Merge pull request 'Design/blocks layout' (#60) from design/blocks-layout into main

Reviewed-on: #60

.editorconfig

@@ -54,3 +54,9 @@ dotnet_diagnostic.CA1812.severity = none
 # layout and is harmless (Blazor routing is not namespace-based). Renaming would
 # break the folder convention for no benefit.
 dotnet_diagnostic.CA1724.severity = none
+
+# CA1308 wants ToUpperInvariant over ToLowerInvariant. That advice is for
+# normalizing before a comparison, where a few characters do not round-trip. Here
+# lowercasing is the goal itself (URL slugs, which must be lowercase), not a step
+# before a comparison -- comparisons use StringComparison.OrdinalIgnoreCase instead.
+dotnet_diagnostic.CA1308.severity = none

.gitattributes

@@ -1,3 +1,8 @@
 # Shell-Skripte brauchen Unix-Zeilenenden (LF), sonst scheitert der #!-Aufruf
 # in bash. Unabhaengig von core.autocrlf auf Windows erzwingen.
 *.sh text eol=lf
+
+# PocketBase-Migration und -Schema laufen im Linux-Container. LF erzwingen, damit
+# core.autocrlf=true auf Windows sie nicht bei jeder Beruehrung als geaendert
+# markiert (staendige "LF will be replaced by CRLF"-Warnung).
+pb/** text eol=lf

.run/DevEnvironment.run.xml

@@ -25,7 +25,7 @@
         <option name="upForceRecreate" value="true" />
       </settings>
     </deployment>
-    <EXTENSION ID="com.jetbrains.rider.docker.debug" isFastModeEnabled="true" isSslEnabled="false" />
+    <EXTENSION ID="com.jetbrains.rider.docker.debug" isFastModeEnabled="false" isSslEnabled="false" />
     <method v="2" />
   </configuration>
 </component>

CLAUDE.md

@@ -83,11 +83,47 @@ Inhalt liegt in PocketBase (`pb_data`), das separat gesichert wird (siehe
 - Datenzugriff über den typisierten `PocketBaseClient` (registriert via
   `AddHttpClient`), der pro Request liest — kein Start-Cache, kein Singleton mit
   Inhalten. Komponenten liegen feature-basiert unter `Features/<Bereich>/`.
-- Öffentliche Typen und Methoden im `PocketBaseClient` und in `Contracts`
-  bekommen XML-Doc (auf Englisch, leicht verständlich), Razor-Markup nicht.
+- JSON-Konverter liegen in `Contracts` und werden per `[JsonConverter]` **am Feld**
+  zugeordnet, nicht global auf den `JsonSerializerOptions` im Client registriert. So
+  ist am Contract sichtbar, wie ein Feld behandelt wird (z. B. `Event.Start` als
+  Zeitpunkt, `Post.Date` als Kalendertag), und `Contracts` bekommt keine Referenz
+  auf `PocketBase` (Zirkel). Datumsfelder: `DateTime`/`DateTime?` = Zeitpunkt
+  (Europe/Berlin), `DateOnly` = Kalendertag.
 - **Code durchgängig auf Englisch** — Typen, Member, Variablen, Kommentare,
   Skripte und Doku. Das gilt **auch für Domänenbegriffe**: im Code `Event`, nicht
   `Termin`; `Post`, nicht `Beitrag`. Deutsch bleibt ausschließlich, was ein
   Besucher liest oder ein Redakteur pflegt: UI-Texte sowie die **Werte** der
   PocketBase-Records (z. B. `title: Vorstandsteam`, der Markdown-`body`). Die
   Feldnamen und Slugs bleiben dagegen englisch (`title`, `slug`, `/board`).
+
+## Coding Convention
+
+- **Ausdruckskörper (`=>`) sind Pflicht, wo syntaktisch möglich** — Methoden,
+  Properties, Konstruktoren, Operatoren, lokale Funktionen. Ein `if/else`, das
+  einen Wert liefert, wird zum ternären Ausdruck oder zur `switch`-Expression, kein
+  Block-Körper mit `return`. Ein Block-Körper nur, wo ein Ausdruck sprachlich nicht
+  geht (mehrere Anweisungen ohne Rückgabe, `ref`/`out`, `yield`).
+- Ternäre und `switch`-Expressions dürfen dafür mehrzeilig umgebrochen werden;
+  Lesbarkeit entsteht durch Einrückung, nicht durch einen Block.
+- Nullable aktiv nutzen: `?`, `??`, `??=` statt Nullprüfungen im Block. Ein
+  ungültiger `null`-Fall wird als Ausdruck geworfen (`?? throw new …`).
+- Argumente/Rückgaben früh und knapp validieren, bevorzugt als Ausdruck.
+
+## Documentation Convention
+
+Vorbild ist `Elternbeirat.PocketBase/LocalDateTimeConverter.cs` — daran
+ausrichten.
+
+- **Jeder öffentliche (`public`/`protected`) Typ und Member bekommt XML-Doc** —
+  nicht nur `PocketBaseClient` und `Contracts`. Interne Helfer, die Teil der
+  fachlichen Erklärung sind (wie `WallClock`), ebenfalls. Razor-Markup nicht.
+- Voller Umfang, wo zutreffend: `<summary>`, dazu `<param>`, `<returns>`,
+  `<exception>` (jede geworfene Bedingung), `<remarks>` für Kontext/Fallstricke,
+  `<example>` mit `<code>` für nicht offensichtliche Nutzung, `<seealso>` auf
+  verwandte Typen. `<inheritdoc/>` bei Interface-/Basis-Implementierungen.
+- Code im Text als Markup referenzieren, nicht als Prosa: `<see cref="…"/>`,
+  `<see langword="null"/>`/`<see langword="false"/>`, `<c>…</c>` für Literale.
+- Einrückung: der Textinhalt steht mit vier Leerzeichen unter dem `///`-Tag
+  (`///     Text`), Tags sauber verschachtelt.
+- Englisch, leicht verständlich, erklärt **warum**, nicht was der Code ohnehin
+  zeigt.

Elternbeirat.Contracts/DateOnlyConverter.cs

@@ -0,0 +1,47 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Elternbeirat.Contracts;
+
+/// <summary>
+///     JSON converter that reads and writes a PocketBase date as a calendar date
+///     (<see cref="DateOnly"/>), keeping the day and dropping the time-of-day.
+/// </summary>
+/// <remarks>
+///     PocketBase has no date-only field type: it stores every date as a UTC
+///     instant with a time-of-day (e.g. an editor's <c>2 Jan 00:00</c> Berlin is
+///     stored as <c>"2026-01-01 22:00:00.000Z"</c>). The day the editor meant is
+///     therefore the day <em>in Berlin</em>, not the day of the raw UTC string. This
+///     converter reuses the same UTC-&gt;Berlin conversion as
+///     <see cref="LocalDateTimeConverter"/> and then keeps only the date, so the day
+///     shown is the day that was entered -- with no time-of-day and no off-by-one.
+/// </remarks>
+/// <example>
+///     Apply it to a calendar-day field of a contract:
+/// <code>
+///     [JsonConverter(typeof(DateOnlyConverter))]
+///     public DateOnly Date { get; init; }
+/// </code>
+/// </example>
+/// <seealso cref="WallClock"/>
+public sealed class DateOnlyConverter : JsonConverter<DateOnly>
+{
+    /// <inheritdoc/>
+    /// <exception cref="FormatException">
+    ///     The stored value is not a valid date string.
+    /// </exception>
+    public override DateOnly Read(
+        ref Utf8JsonReader reader,
+        Type typeToConvert,
+        JsonSerializerOptions options)
+        => WallClock.Parse(reader.GetString()) is { } berlin
+            ? DateOnly.FromDateTime(berlin)
+            : default;
+
+    /// <inheritdoc/>
+    public override void Write(
+        Utf8JsonWriter writer,
+        DateOnly value,
+        JsonSerializerOptions options)
+        => writer.WriteStringValue(WallClock.Format(value.ToDateTime(TimeOnly.MinValue)));
+}

Elternbeirat.Contracts/Event.cs

@@ -2,38 +2,87 @@ using System.Text.Json.Serialization;
 
 namespace Elternbeirat.Contracts;
 
-/// <summary>A calendar entry. Sorted by <see cref="Start"/>.</summary>
+/// <summary>
+///     A calendar entry of the Elternbeirat, as stored in PocketBase.
+/// </summary>
+/// <remarks>
+///     Event lists are ordered by <see cref="Start"/>. Unset optional text fields are
+///     <see cref="string.Empty"/>, never <see langword="null"/>.
+/// </remarks>
 public record Event
 {
-    /// <summary>PocketBase record id.</summary>
+    /// <summary>
+    ///     Gets the PocketBase record id.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: every stored record has an id. Modeling it as
+    ///     required states which fields a record must carry, independent of the store,
+    ///     so a future data source has to supply them too.
+    /// </remarks>
     [JsonPropertyName("id")]
-    public string Id { get; init; } = "";
+    public required string Id { get; init; }
 
     /// <summary>
-    /// Start of the event with date and time. Stored as UTC by PocketBase but
-    /// read as local time (Europe/Berlin) by convention. An all-day event uses
-    /// 00:00 as the time.
+    ///     Gets the start of the event as Europe/Berlin wall-clock time.
     /// </summary>
+    /// <remarks>
+    ///     PocketBase stores the value in UTC; it is converted to Berlin local time on
+    ///     deserialization, with daylight saving applied. An all-day event uses 00:00
+    ///     as the time.
+    ///     <see langword="required"/>: an event without a start has no place on the
+    ///     calendar, and the field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("start")]
-    public DateTime Start { get; init; }
+    [JsonConverter(typeof(LocalDateTimeConverter))]
+    public required DateTime Start { get; init; }
 
-    /// <summary>Optional end of the event; null when unset.</summary>
+    /// <summary>
+    ///     Gets the optional end of the event as Europe/Berlin wall-clock time.
+    /// </summary>
+    /// <value>
+    ///     The end time, or <see langword="null"/> if the event has no end.
+    /// </value>
     [JsonPropertyName("end")]
+    [JsonConverter(typeof(NullableLocalDateTimeConverter))]
     public DateTime? End { get; init; }
 
-    /// <summary>Event name, e.g. "Elternbeiratssitzung".</summary>
+    /// <summary>
+    ///     Gets the event name, e.g. <c>"Elternbeiratssitzung"</c>.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: an event without a name is incomplete, and the
+    ///     field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("title")]
-    public string Title { get; init; } = "";
+    public required string Title { get; init; }
 
-    /// <summary>Optional location, e.g. "Aula".</summary>
+    /// <summary>
+    ///     Gets the optional location, e.g. <c>"Aula"</c>.
+    /// </summary>
+    /// <value>
+    ///     The location, or <see cref="string.Empty"/> if none is set.
+    /// </value>
     [JsonPropertyName("location")]
-    public string Location { get; init; } = "";
+    public string Location { get; init; } = string.Empty;
 
-    /// <summary>Optional note, e.g. "Anmeldung erforderlich".</summary>
+    /// <summary>
+    ///     Gets the optional note, e.g. <c>"Anmeldung erforderlich"</c>.
+    /// </summary>
+    /// <value>
+    ///     The note, or <see cref="string.Empty"/> if none is set.
+    /// </value>
     [JsonPropertyName("note")]
-    public string Note { get; init; } = "";
+    public string Note { get; init; } = string.Empty;
 
-    /// <summary>Whether the event is visible to visitors.</summary>
-    [JsonPropertyName("public")]
-    public bool Public { get; init; }
+    /// <summary>
+    ///     Gets a value indicating whether the event has a wall-clock time, as opposed
+    ///     to being an all-day event.
+    /// </summary>
+    /// <remarks>
+    ///     PocketBase has no all-day flag; the convention is that a start of 00:00
+    ///     means all-day. This is the single definition of that rule -- formatting and
+    ///     the calendar feed both read it here instead of re-deriving it.
+    /// </remarks>
+    [JsonIgnore]
+    public bool HasTime => Start.TimeOfDay != TimeSpan.Zero;
 }

Elternbeirat.Contracts/Faq.cs

@@ -3,27 +3,107 @@ using System.Text.Json.Serialization;
 namespace Elternbeirat.Contracts;
 
 /// <summary>
-/// A single question and answer, grouped on the FAQ page by <see cref="Topic"/>.
+///     A single question and answer of the FAQ, as stored in PocketBase.
 /// </summary>
+/// <remarks>
+///     On the FAQ page, entries are grouped by their <see cref="Topic"/>. The topic is
+///     a PocketBase relation; <see cref="Topic"/> is the resolved topic record, present
+///     only when the query expanded the relation (see <see cref="FaqExpand"/>).
+/// </remarks>
 public record Faq
 {
-    /// <summary>PocketBase record id.</summary>
+    /// <summary>
+    ///     Gets the PocketBase record id.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: every stored record has an id. Modeling it as
+    ///     required states which fields a record must carry, independent of the store,
+    ///     so a future data source has to supply them too.
+    /// </remarks>
     [JsonPropertyName("id")]
-    public string Id { get; init; } = "";
+    public required string Id { get; init; }
 
-    /// <summary>The question as a parent would phrase it.</summary>
+    /// <summary>
+    ///     Gets the question as a parent would phrase it.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: a FAQ entry without a question is incomplete, and
+    ///     the field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("question")]
-    public string Question { get; init; } = "";
+    public required string Question { get; init; }
 
-    /// <summary>The answer in Markdown.</summary>
+    /// <summary>
+    ///     Gets the answer as Markdown.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: a FAQ entry exists to answer its question, so an
+    ///     entry without an answer is incomplete. The field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("answer")]
-    public string Answer { get; init; } = "";
+    public required string Answer { get; init; }
 
-    /// <summary>Topic the question is grouped under, e.g. "mensa".</summary>
-    [JsonPropertyName("topic")]
-    public string Topic { get; init; } = "";
+    /// <summary>
+    ///     Gets the sort order of the question within its topic.
+    /// </summary>
+    /// <value>
+    ///     The sort key; questions with smaller values appear first.
+    /// </value>
+    [JsonPropertyName("order")]
+    public double Order { get; init; }
 
-    /// <summary>Whether the question is visible to visitors.</summary>
+    /// <summary>
+    ///     Gets whether this entry is published and may be shown to visitors.
+    /// </summary>
+    /// <value>
+    ///     <see langword="true"/> when the entry is public, <see langword="false"/> for a
+    ///     draft that must stay hidden.
+    /// </value>
+    /// <remarks>
+    ///     Collection queries filter on <c>public=true</c> server-side, so entries loaded
+    ///     that way are always public and never need this checked. It matters only for the
+    ///     <c>faqs_via_topic</c> back-relation expand behind <see cref="FaqTopic.Faqs"/>:
+    ///     PocketBase does not apply the topic query's <c>public</c> filter to expanded
+    ///     child records, so a draft question would otherwise leak onto the topic page.
+    ///     That getter filters on this to keep drafts hidden.
+    /// </remarks>
     [JsonPropertyName("public")]
     public bool Public { get; init; }
+
+    /// <summary>
+    ///     Gets the expanded relations returned by PocketBase, or <see langword="null"/>
+    ///     when the query did not expand any.
+    /// </summary>
+    [JsonPropertyName("expand")]
+    public FaqExpand? Expand { get; init; }
+
+    /// <summary>
+    ///     Gets the resolved topic this entry is grouped under, or <see langword="null"/>
+    ///     when the query did not expand the topic relation.
+    /// </summary>
+    /// <remarks>
+    ///     Convenience over <see cref="Expand"/>: the FAQ page reads the grouping
+    ///     heading from here. It is <see langword="null"/> unless the entry was loaded
+    ///     with the topic relation expanded.
+    /// </remarks>
+    [JsonIgnore]
+    public FaqTopic? Topic => Expand?.Topic;
+}
+
+/// <summary>
+///     The relations of a <see cref="Faq"/> that PocketBase returns under
+///     <c>expand</c> when the query asks for them.
+/// </summary>
+/// <remarks>
+///     One property per expandable relation, named after its PocketBase field, so the
+///     JSON <c>expand</c> object maps straight onto it. <see cref="Faq.Topic"/> reads
+///     through this.
+/// </remarks>
+public record FaqExpand
+{
+    /// <summary>
+    ///     Gets the expanded topic of the <c>topic</c> relation, if it was expanded.
+    /// </summary>
+    [JsonPropertyName("topic")]
+    public FaqTopic? Topic { get; init; }
 }

Elternbeirat.Contracts/FaqTopic.cs

@@ -0,0 +1,118 @@
+using System.Text.Json.Serialization;
+
+namespace Elternbeirat.Contracts;
+
+/// <summary>
+///     A topic the FAQ entries are grouped under, as stored in PocketBase.
+/// </summary>
+/// <remarks>
+///     A <see cref="Faq"/> points at its topic through a relation, so the FAQ page
+///     groups the questions by topic and shows the groups in <see cref="Order"/>.
+///     Making the topic its own record (rather than a free-text field on each
+///     question) means the heading, its order and its optional <see cref="Intro"/>
+///     are edited in one place and shared by every question in the group.
+/// </remarks>
+public record FaqTopic
+{
+    /// <summary>
+    ///     Gets the PocketBase record id.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: every stored record has an id. Modeling it as
+    ///     required states which fields a record must carry, independent of the store,
+    ///     so a future data source has to supply them too.
+    /// </remarks>
+    [JsonPropertyName("id")]
+    public required string Id { get; init; }
+
+    /// <summary>
+    ///     Gets the heading shown above the group of questions, e.g.
+    ///     <c>"Mensa und Mittagessen"</c>.
+    /// </summary>
+    /// <remarks>
+    ///     Free text; may contain umlauts and spaces. For the URL, see <see cref="Slug"/>.
+    ///     <see langword="required"/>: a topic without a heading has nothing to show, and
+    ///     the field is required in PocketBase.
+    /// </remarks>
+    [JsonPropertyName("title")]
+    public required string Title { get; init; }
+
+    /// <summary>
+    ///     Gets the URL slug of the topic, e.g. <c>"cafeteria"</c>.
+    /// </summary>
+    /// <value>
+    ///     A URL path segment: lowercase letters, digits and single hyphens as
+    ///     separators, no umlauts. PocketBase enforces this on save via a field
+    ///     pattern (<c>^[a-z0-9]+(-[a-z0-9]+)*$</c>), so every stored slug is already
+    ///     canonical and the app can use it verbatim.
+    /// </value>
+    /// <remarks>
+    ///     <see langword="required"/>: the slug is required in PocketBase and is the
+    ///     stable identifier of a topic, independent of its display title.
+    /// </remarks>
+    [JsonPropertyName("slug")]
+    public required string Slug { get; init; }
+
+    /// <summary>
+    ///     Gets the optional introduction shown below the topic heading, as Markdown.
+    /// </summary>
+    /// <value>
+    ///     The intro Markdown, or an empty string when the topic has none.
+    /// </value>
+    [JsonPropertyName("intro")]
+    public string Intro { get; init; } = string.Empty;
+
+    /// <summary>
+    ///     Gets the sort order of the topic among the FAQ groups.
+    /// </summary>
+    /// <value>
+    ///     The sort key; topics with smaller values appear first.
+    /// </value>
+    [JsonPropertyName("order")]
+    public double Order { get; init; }
+
+    /// <summary>
+    ///     Gets the expanded relations returned by PocketBase, or <see langword="null"/>
+    ///     when the query did not expand any.
+    /// </summary>
+    [JsonPropertyName("expand")]
+    public FaqTopicExpand? Expand { get; init; }
+
+    /// <summary>
+    ///     Gets the questions of this topic, ordered by <see cref="Faq.Order"/>, or an
+    ///     empty list when none are linked or the relation was not expanded.
+    /// </summary>
+    /// <remarks>
+    ///     Convenience over <see cref="Expand"/>: questions name their topic, so
+    ///     PocketBase returns them under the back-relation key when the query expands it
+    ///     (<c>faqs_via_topic</c>). The FAQ page reads them from here. They
+    ///     arrive unsorted, so this orders them by <see cref="Faq.Order"/> for a stable
+    ///     render. Drafts are dropped: PocketBase does not apply the topic query's
+    ///     <c>public</c> filter to the expanded children, so this keeps
+    ///     non-public questions (<see cref="Faq.Public"/>) off the page.
+    /// </remarks>
+    [JsonIgnore]
+    public IReadOnlyList<Faq> Faqs =>
+        Expand?.Faqs is { } faqs
+            ? [.. faqs.Where(faq => faq.Public).OrderBy(faq => faq.Order)]
+            : [];
+}
+
+/// <summary>
+///     The relations of a <see cref="FaqTopic"/> that PocketBase returns under
+///     <c>expand</c> when the query asks for them.
+/// </summary>
+/// <remarks>
+///     The questions point at their topic, so PocketBase exposes them as the
+///     back-relation <c>faqs_via_topic</c>. <see cref="FaqTopic.Faqs"/> reads through
+///     this.
+/// </remarks>
+public record FaqTopicExpand
+{
+    /// <summary>
+    ///     Gets the expanded questions of the <c>faqs_via_topic</c> back-relation, if it
+    ///     was expanded.
+    /// </summary>
+    [JsonPropertyName("faqs_via_topic")]
+    public IReadOnlyList<Faq>? Faqs { get; init; }
+}

Elternbeirat.Contracts/LocalDateTimeConverter.cs

@@ -0,0 +1,133 @@
+using System.Globalization;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Elternbeirat.Contracts;
+
+/// <summary>
+///     Converts between PocketBase date strings and Europe/Berlin wall-clock time.
+/// </summary>
+/// <remarks>
+///     PocketBase stores every date in UTC and serializes it with a trailing <c>Z</c>
+///     (e.g. <c>"2026-10-08 17:30:00.000Z"</c>). The values produced here are local
+///     wall-clock numbers: an editor who typed 19:30 in the admin form gets 19:30 back,
+///     with daylight saving applied by the time zone. They carry
+///     <see cref="DateTimeKind.Unspecified"/> so that no later formatting shifts them again.
+/// </remarks>
+internal static class WallClock
+{
+    /// <summary>
+    ///     IANA id; resolves on every platform .NET supports, Windows included.
+    /// </summary>
+    private static readonly TimeZoneInfo Berlin =
+        TimeZoneInfo.FindSystemTimeZoneById("Europe/Berlin");
+
+    /// <summary>
+    ///     Parses a PocketBase UTC date string into Berlin wall-clock time.
+    /// </summary>
+    /// <param name="raw">
+    ///     The raw PocketBase value; may be <see langword="null"/> or empty.
+    /// </param>
+    /// <returns>
+    ///     The Berlin wall-clock time with <see cref="DateTimeKind.Unspecified"/>, or
+    ///     <see langword="null"/> if <paramref name="raw"/> is <see langword="null"/> or empty
+    ///     (PocketBase's representation of an unset date).
+    /// </returns>
+    /// <exception cref="FormatException">
+    ///     <paramref name="raw"/> is not a valid date string.
+    /// </exception>
+    public static DateTime? Parse(string? raw) =>
+        string.IsNullOrEmpty(raw)
+            ? null
+            : TimeZoneInfo.ConvertTime(
+                DateTimeOffset.Parse(raw, CultureInfo.InvariantCulture), Berlin).DateTime;
+
+    /// <summary>
+    ///     Formats a Berlin wall-clock time as the UTC string PocketBase stores.
+    ///     Inverse of <see cref="Parse"/>.
+    /// </summary>
+    /// <param name="berlin">
+    ///     A Berlin wall-clock time. Its <see cref="DateTime.Kind"/> is ignored, and the
+    ///     value is always interpreted as Berlin local time.
+    /// </param>
+    /// <returns>
+    ///     The UTC value in PocketBase format, e.g. <c>"2026-10-08 17:30:00.000Z"</c>.
+    /// </returns>
+    /// <exception cref="ArgumentException">
+    ///     <paramref name="berlin"/> does not exist in Berlin, because it falls in the
+    ///     daylight-saving gap in spring.
+    /// </exception>
+    public static string Format(DateTime berlin) =>
+        TimeZoneInfo.ConvertTimeToUtc(DateTime.SpecifyKind(berlin, DateTimeKind.Unspecified), Berlin)
+            .ToString("yyyy-MM-dd HH:mm:ss.fff'Z'", CultureInfo.InvariantCulture);
+}
+
+/// <summary>
+///     JSON converter that reads and writes PocketBase dates as Europe/Berlin
+///     wall-clock <see cref="DateTime"/> values.
+/// </summary>
+/// <remarks>
+///     An empty string (unset date) is read as <see langword="default"/>(<see cref="DateTime"/>).
+///     For optional dates, use <see cref="NullableLocalDateTimeConverter"/> instead.
+/// </remarks>
+/// <example>
+///     Apply it to a required date field of a contract:
+/// <code>
+///     [JsonConverter(typeof(LocalDateTimeConverter))]
+///     public DateTime Start { get; init; }
+/// </code>
+/// </example>
+/// <seealso cref="WallClock"/>
+public sealed class LocalDateTimeConverter : JsonConverter<DateTime>
+{
+    /// <inheritdoc/>
+    public override DateTime Read(
+        ref Utf8JsonReader reader,
+        Type typeToConvert,
+        JsonSerializerOptions options)
+        => WallClock.Parse(reader.GetString()) ?? default;
+
+    /// <inheritdoc/>
+    public override void Write(
+        Utf8JsonWriter writer,
+        DateTime value,
+        JsonSerializerOptions options)
+        => writer.WriteStringValue(WallClock.Format(value));
+}
+
+/// <summary>
+///     JSON converter that reads and writes optional PocketBase dates as Europe/Berlin
+///     wall-clock <see cref="DateTime"/> values.
+/// </summary>
+/// <remarks>
+///     PocketBase sends an empty string for an unset optional date (e.g. an event
+///     without an end). This value, like JSON <c>null</c>, is read as <see langword="null"/>.
+/// </remarks>
+/// <example>
+///     Apply it to an optional date field of a contract:
+/// <code>
+///     [JsonConverter(typeof(NullableLocalDateTimeConverter))]
+///     public DateTime? End { get; init; }
+/// </code>
+/// </example>
+/// <seealso cref="WallClock"/>
+public sealed class NullableLocalDateTimeConverter : JsonConverter<DateTime?>
+{
+    /// <inheritdoc/>
+    public override DateTime? Read(
+        ref Utf8JsonReader reader,
+        Type typeToConvert,
+        JsonSerializerOptions options)
+        => WallClock.Parse(reader.GetString());
+
+    /// <inheritdoc/>
+    /// <remarks>
+    ///     Only called for non-null values: <see cref="JsonConverter{T}.HandleNull"/> is
+    ///     <see langword="false"/>, so the serializer writes <see langword="null"/> itself.
+    /// </remarks>
+    public override void Write(
+        Utf8JsonWriter writer,
+        DateTime? value,
+        JsonSerializerOptions options)
+        => writer.WriteStringValue(WallClock.Format(value ?? throw new ArgumentNullException(nameof(value))));
+}

Elternbeirat.Contracts/Page.cs

@@ -3,45 +3,114 @@ using System.Text.Json.Serialization;
 namespace Elternbeirat.Contracts;
 
 /// <summary>
-/// A content page. Pages also drive the site navigation: <see cref="Location"/>
-/// and <see cref="Order"/> decide where and in which order a page appears in the
-/// header or footer menu, and <see cref="Embed"/> lists dynamic blocks (posts,
-/// events, faqs) rendered below the page body.
+///     A content page of the site, as stored in PocketBase.
 /// </summary>
+/// <remarks>
+///     Pages also drive the site navigation: <see cref="Location"/> and
+///     <see cref="Order"/> decide where and in which order a page appears in the
+///     header or footer menu. <see cref="Embed"/> lists dynamic blocks rendered
+///     below the page body.
+/// </remarks>
 public record Page
 {
-    /// <summary>PocketBase record id.</summary>
+    /// <summary>
+    ///     The slug of the home page, which is served at the site root <c>/</c> rather
+    ///     than at <c>/home</c>. Reserved: no other page may use it.
+    /// </summary>
+    private const string HomeSlug = "home";
+
+    /// <summary>
+    ///     Gets the PocketBase record id.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: every stored record has an id. Modeling it as
+    ///     required states which fields a record must carry, independent of the store,
+    ///     so a future data source has to supply them too.
+    /// </remarks>
     [JsonPropertyName("id")]
-    public string Id { get; init; } = "";
+    public required string Id { get; init; }
 
-    /// <summary>Heading shown to visitors; may contain umlauts and spaces.</summary>
+    /// <summary>
+    ///     Gets the heading shown to visitors.
+    /// </summary>
+    /// <remarks>
+    ///     Free text; may contain umlauts and spaces. For the URL, see <see cref="Slug"/>.
+    ///     <see langword="required"/>: a page without a heading is incomplete, and the
+    ///     field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("title")]
-    public string Title { get; init; } = "";
+    public required string Title { get; init; }
 
-    /// <summary>Page body in Markdown.</summary>
+    /// <summary>
+    ///     Gets the page body as Markdown.
+    /// </summary>
     [JsonPropertyName("body")]
-    public string Body { get; init; } = "";
+    public string Body { get; init; } = string.Empty;
 
-    /// <summary>Where the page appears in the navigation: "header" or "footer".</summary>
+    /// <summary>
+    ///     Gets the navigation menu the page appears in.
+    /// </summary>
+    /// <value>
+    ///     Either <c>"header"</c> or <c>"footer"</c>.
+    /// </value>
+    /// <remarks>
+    ///     <see langword="required"/>: the navigation is built from this, and the field
+    ///     is required in PocketBase, so every page belongs to one of the two menus.
+    /// </remarks>
     [JsonPropertyName("location")]
-    public string Location { get; init; } = "";
+    public required string Location { get; init; }
 
-    /// <summary>Sort order within its navigation location; smaller is earlier.</summary>
+    /// <summary>
+    ///     Gets the sort order within the navigation menu given by <see cref="Location"/>.
+    /// </summary>
+    /// <value>
+    ///     The sort key; pages with smaller values appear first.
+    /// </value>
     [JsonPropertyName("order")]
     public double Order { get; init; }
 
-    /// <summary>URL slug (lowercase, no umlauts), e.g. "board" -> /board.</summary>
+    /// <summary>
+    ///     Gets the URL slug of the page, e.g. <c>"board"</c> for <c>/board</c>.
+    /// </summary>
+    /// <value>
+    ///     A URL path segment: lowercase letters, digits and single hyphens as
+    ///     separators, no umlauts. PocketBase enforces this on save via a field
+    ///     pattern (<c>^[a-z0-9]+(-[a-z0-9]+)*$</c>), so every stored slug is already
+    ///     canonical and the app can use it verbatim in comparisons and generated URLs.
+    /// </value>
+    /// <remarks>
+    ///     <see langword="required"/>: the slug is how a page is addressed, so a record
+    ///     without one is broken. It is a required field in PocketBase, so deserializing
+    ///     one that lacks it should fail loudly rather than yield a page with no URL.
+    /// </remarks>
     [JsonPropertyName("slug")]
-    public string Slug { get; init; } = "";
+    public required string Slug { get; init; }
 
     /// <summary>
-    /// Dynamic blocks to render below the body: any of "posts", "events", "faqs".
-    /// Empty for a plain text page.
+    ///     Gets the dynamic blocks rendered below the <see cref="Body"/>.
     /// </summary>
+    /// <value>
+    ///     Any of <c>"posts"</c> and <c>"events"</c>, or an empty list for a plain
+    ///     text page.
+    /// </value>
     [JsonPropertyName("embed")]
     public IReadOnlyList<string> Embed { get; init; } = [];
 
-    /// <summary>Whether the page is visible to visitors.</summary>
-    [JsonPropertyName("public")]
-    public bool Public { get; init; }
+    /// <summary>
+    ///     Tests whether a slug is the home page's. This is the single definition of
+    ///     that comparison, so every caller identifies the home page the same way.
+    /// </summary>
+    /// <remarks>
+    ///     An ordinal (case-sensitive) comparison is enough because slugs are always
+    ///     lowercase: PocketBase enforces that with a field pattern (see
+    ///     <see cref="Slug"/>), and this is only ever called with a stored slug.
+    /// </remarks>
+    /// <param name="slug">
+    ///     The slug to test, e.g. from <see cref="Slug"/>.
+    /// </param>
+    /// <returns>
+    ///     <see langword="true"/> if <paramref name="slug"/> is the home page's slug.
+    /// </returns>
+    public static bool IsHomeSlug(string slug) =>
+        string.Equals(slug, HomeSlug, StringComparison.Ordinal);
 }

Elternbeirat.Contracts/Post.cs

@@ -2,33 +2,69 @@ using System.Text.Json.Serialization;
 
 namespace Elternbeirat.Contracts;
 
-/// <summary>A news post. Sorted by <see cref="Date"/>, newest first.</summary>
+/// <summary>
+///     A news post of the site, as stored in PocketBase.
+/// </summary>
+/// <remarks>
+///     Post lists are ordered by <see cref="Date"/>, newest first.
+/// </remarks>
 public record Post
 {
-    /// <summary>PocketBase record id.</summary>
+    /// <summary>
+    ///     Gets the PocketBase record id.
+    /// </summary>
+    /// <remarks>
+    ///     <see langword="required"/>: every stored record has an id. Modeling it as
+    ///     required states which fields a record must carry, independent of the store,
+    ///     so a future data source has to supply them too.
+    /// </remarks>
     [JsonPropertyName("id")]
-    public string Id { get; init; } = "";
+    public required string Id { get; init; }
 
     /// <summary>
-    /// Publication date. Stored as UTC by PocketBase but read as local time
-    /// (Europe/Berlin) by convention; only the date part is shown.
+    ///     Gets the publication date as a calendar day.
     /// </summary>
+    /// <remarks>
+    ///     A post's date is a plain day, not a point in time. It is read as the
+    ///     Berlin calendar day: the UTC value is converted to Europe/Berlin and only
+    ///     the day is kept, so the day an editor picked is the day shown -- no
+    ///     time-of-day, no off-by-one at midnight. See <see cref="DateOnlyConverter"/>.
+    /// </remarks>
     [JsonPropertyName("date")]
-    public DateTime Date { get; init; }
+    [JsonConverter(typeof(DateOnlyConverter))]
+    public DateOnly Date { get; init; }
 
-    /// <summary>Post heading shown to visitors; may contain umlauts and spaces.</summary>
+    /// <summary>
+    ///     Gets the heading shown to visitors.
+    /// </summary>
+    /// <remarks>
+    ///     Free text; may contain umlauts and spaces. For the URL, see <see cref="Slug"/>.
+    ///     <see langword="required"/>: a post without a heading is incomplete, and the
+    ///     field is required in PocketBase.
+    /// </remarks>
     [JsonPropertyName("title")]
-    public string Title { get; init; } = "";
+    public required string Title { get; init; }
 
-    /// <summary>Post body in Markdown.</summary>
+    /// <summary>
+    ///     Gets the post body as Markdown.
+    /// </summary>
     [JsonPropertyName("body")]
-    public string Body { get; init; } = "";
+    public string Body { get; init; } = string.Empty;
 
-    /// <summary>URL slug (lowercase, no umlauts), e.g. "herbstbasar" -> /posts/herbstbasar.</summary>
+    /// <summary>
+    ///     Gets the URL slug of the post, e.g. <c>"herbstbasar"</c> for <c>/posts/herbstbasar</c>.
+    /// </summary>
+    /// <value>
+    ///     A URL path segment: lowercase letters, digits and single hyphens as
+    ///     separators, no umlauts. PocketBase enforces this on save via a field
+    ///     pattern (<c>^[a-z0-9]+(-[a-z0-9]+)*$</c>), so every stored slug is already
+    ///     canonical and the app can use it verbatim in comparisons and generated URLs.
+    /// </value>
+    /// <remarks>
+    ///     <see langword="required"/>: the slug is how a post is addressed, so a record
+    ///     without one is broken. It is a required field in PocketBase, so deserializing
+    ///     one that lacks it should fail loudly rather than yield a post with no URL.
+    /// </remarks>
     [JsonPropertyName("slug")]
-    public string Slug { get; init; } = "";
-
-    /// <summary>Whether the post is visible to visitors.</summary>
-    [JsonPropertyName("public")]
-    public bool Public { get; init; }
+    public required string Slug { get; init; }
 }

Elternbeirat.PocketBase/LocalDateTimeConverter.cs

@@ -1,75 +0,0 @@
-using System.Globalization;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-
-namespace Elternbeirat.PocketBase;
-
-/// <summary>
-/// Shared parsing of a PocketBase date string as wall-clock time. The trailing
-/// "Z" is stripped rather than honoured, so the number is taken at face value and
-/// the result carries <see cref="DateTimeKind.Unspecified"/> -- no timezone shift.
-/// </summary>
-internal static class WallClock
-{
-    public static DateTime Parse(string raw)
-    {
-        // Drop a trailing "Z" so DateTime.Parse does not treat the value as UTC
-        // and convert it to local time (which would shift 19:30 to 20:30/21:30).
-        var value = raw.EndsWith('Z') ? raw[..^1] : raw;
-        var parsed = DateTime.Parse(value, CultureInfo.InvariantCulture,
-            DateTimeStyles.None);
-        return DateTime.SpecifyKind(parsed, DateTimeKind.Unspecified);
-    }
-}
-
-/// <summary>
-/// Reads PocketBase date values as local wall-clock time.
-/// <para>
-/// PocketBase stores every date in UTC and serializes it with a trailing "Z"
-/// (e.g. "2026-10-08 19:30:00.000Z"). By project convention the stored number
-/// IS the local time (Europe/Berlin) and the "Z" is ignored -- see the timezone
-/// decision in the data model. This converter therefore parses the value and
-/// returns it as an <see cref="DateTimeKind.Unspecified"/> instant, so no
-/// timezone shift is ever applied when the value is later formatted.
-/// </para>
-/// </summary>
-public sealed class LocalDateTimeConverter : JsonConverter<DateTime>
-{
-    public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-    {
-        var raw = reader.GetString();
-        return string.IsNullOrEmpty(raw) 
-            ? default 
-            : WallClock.Parse(raw);
-    }
-
-    public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
-        => writer.WriteStringValue(value.ToString("yyyy-MM-dd HH:mm:ss.fff'Z'",
-            CultureInfo.InvariantCulture));
-}
-
-/// <summary>
-/// Nullable counterpart of <see cref="LocalDateTimeConverter"/>. PocketBase sends
-/// an empty string for an unset optional date (e.g. an event without an end);
-/// that maps to null.
-/// </summary>
-public sealed class NullableLocalDateTimeConverter : JsonConverter<DateTime?>
-{
-    public override DateTime? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
-    {
-        var raw = reader.GetString();
-        if (string.IsNullOrEmpty(raw))
-            return null;
-
-        return WallClock.Parse(raw);
-    }
-
-    public override void Write(Utf8JsonWriter writer, DateTime? value, JsonSerializerOptions options)
-    {
-        if (value is null)
-            writer.WriteStringValue("");
-        else
-            writer.WriteStringValue(value.Value.ToString("yyyy-MM-dd HH:mm:ss.fff'Z'",
-                CultureInfo.InvariantCulture));
-    }
-}

Elternbeirat.PocketBase/PocketBaseClient.cs

@@ -5,47 +5,179 @@ using Elternbeirat.Contracts;
 namespace Elternbeirat.PocketBase;
 
 /// <summary>
-/// Reads published content from a PocketBase instance over its REST API.
-/// <para>
-/// One method per collection (pages, posts, events, faqs). Each returns only
-/// records with <c>public = true</c> and lets PocketBase do the filtering and
-/// sorting via query parameters. The <see cref="HttpClient"/> is expected to have
-/// its <see cref="HttpClient.BaseAddress"/> set to the PocketBase base URL, so it
-/// is registered as a typed client via <c>AddHttpClient</c>.
-/// </para>
+///     Reads published content from a PocketBase instance over its REST API.
 /// </summary>
-public sealed class PocketBaseClient(HttpClient http)
+/// <remarks>
+///     <para>
+///         There is one method per collection (pages, posts, events, faqs). Each returns
+///         only records with <c>public = true</c> and leaves filtering and sorting to
+///         PocketBase via query parameters.
+///     </para>
+///     <para>
+///         Responses are deserialized with the web defaults. Date conversion from UTC
+///         to Berlin wall-clock time is declared on the contracts themselves via
+///         <c>[JsonConverter]</c> (e.g. <see cref="Event.Start"/>, <see cref="Post.Date"/>),
+///         so no serializer options are configured here.
+///     </para>
+///     <para>
+///         Register the class as a typed client via <c>AddHttpClient</c>, with
+///         <see cref="HttpClient.BaseAddress"/> set to the PocketBase base URL.
+///     </para>
+/// </remarks>
+/// <param name="httpClient">
+///     The HTTP client; its <see cref="HttpClient.BaseAddress"/> must point to PocketBase.
+/// </param>
+public sealed class PocketBaseClient(HttpClient httpClient)
 {
-    private static readonly JsonSerializerOptions JsonOptions = CreateJsonOptions();
+    /// <summary>
+    ///     Gets all public pages, ordered by <see cref="Page.Order"/>.
+    /// </summary>
+    /// <param name="token">
+    ///     A token to cancel the request.
+    /// </param>
+    /// <returns>
+    ///     The public pages, or an empty list if there are none.
+    /// </returns>
+    /// <exception cref="PocketBaseUnavailableException">
+    ///     PocketBase could not be reached, timed out, or returned an unreadable response.
+    /// </exception>
+    /// <exception cref="OperationCanceledException">
+    ///     <paramref name="token"/> was canceled by the caller.
+    /// </exception>
+    public Task<IReadOnlyList<Page>> GetPagesAsync(CancellationToken token = default)
+        => GetRecordsAsync<Page>("pages", "order", token);
 
-    private static JsonSerializerOptions CreateJsonOptions()
+    /// <summary>
+    ///     Gets all public posts, ordered by <see cref="Post.Date"/>, newest first.
+    /// </summary>
+    /// <inheritdoc cref="GetPagesAsync" path="/param"/>
+    /// <returns>
+    ///     The public posts, or an empty list if there are none.
+    /// </returns>
+    /// <inheritdoc cref="GetPagesAsync" path="/exception"/>
+    public Task<IReadOnlyList<Post>> GetPostsAsync(CancellationToken token = default)
+        => GetRecordsAsync<Post>("posts", "-date", token);
+
+    /// <summary>
+    ///     Gets all public events, ordered by <see cref="Event.Start"/>, earliest first.
+    /// </summary>
+    /// <inheritdoc cref="GetPagesAsync" path="/param"/>
+    /// <returns>
+    ///     The public events, or an empty list if there are none.
+    /// </returns>
+    /// <inheritdoc cref="GetPagesAsync" path="/exception"/>
+    public Task<IReadOnlyList<Event>> GetEventsAsync(CancellationToken token = default)
+        => GetRecordsAsync<Event>("events", "start", token);
+
+    /// <summary>
+    ///     Gets all public FAQ entries, grouped by topic: ordered by the topic's own
+    ///     <c>order</c>, then by the entry's <c>order</c> within that topic. Each entry
+    ///     carries its expanded <see cref="Faq.Topic"/>.
+    /// </summary>
+    /// <remarks>
+    ///     Sorting by <c>topic.order</c> first keeps all questions of a topic together
+    ///     and lists the topic groups in the order an editor gave the topics; the
+    ///     entry's own <c>order</c> then arranges the questions within each group. Both
+    ///     keys together make the order total, so the same content renders the same way
+    ///     between requests. The topic relation is expanded so the page can show each
+    ///     group's heading without a second request.
+    /// </remarks>
+    /// <inheritdoc cref="GetPagesAsync" path="/param"/>
+    /// <returns>
+    ///     The public FAQ entries, or an empty list if there are none.
+    /// </returns>
+    /// <inheritdoc cref="GetPagesAsync" path="/exception"/>
+    public Task<IReadOnlyList<Faq>> GetFaqsAsync(CancellationToken token = default)
+        => GetRecordsAsync<Faq>("faqs", "topic.order,order", token, expand: "topic");
+
+    /// <summary>
+    ///     Gets all public FAQ topics, ordered by <see cref="FaqTopic.Order"/>, each with
+    ///     its questions expanded.
+    /// </summary>
+    /// <remarks>
+    ///     Backs the FAQ page, which shows every topic as a collapsible group with its
+    ///     questions nested inside. The <c>faqs_via_topic</c> back-relation is expanded so
+    ///     one request returns the topics and their questions together; drafts among the
+    ///     questions are dropped in <see cref="FaqTopic.Faqs"/>.
+    /// </remarks>
+    /// <inheritdoc cref="GetPagesAsync" path="/param"/>
+    /// <returns>
+    ///     The public FAQ topics with their questions, or an empty list if there are none.
+    /// </returns>
+    /// <inheritdoc cref="GetPagesAsync" path="/exception"/>
+    public Task<IReadOnlyList<FaqTopic>> GetFaqTopicsAsync(CancellationToken token = default)
+        => GetRecordsAsync<FaqTopic>("faq_topics", "order", token, expand: "faqs_via_topic");
+
+    /// <summary>
+    ///     Checks whether PocketBase answers its health endpoint.
+    /// </summary>
+    /// <remarks>
+    ///     Backs the app's own <c>/health</c> endpoint, which an external monitor (Uptime
+    ///     Kuma) polls: the app answering at all proves the app is up, and this probe adds
+    ///     whether the content source behind it is reachable, so one monitor covers both.
+    ///     This calls <c>GET /api/health</c>, PocketBase's own liveness endpoint, which
+    ///     needs no auth and touches no collection.
+    /// </remarks>
+    /// <param name="token">
+    ///     A token to cancel the probe.
+    /// </param>
+    /// <returns>
+    ///     <see langword="true"/> if PocketBase answered with a success status within the
+    ///     client timeout; <see langword="false"/> if it was unreachable, timed out, or
+    ///     answered with an error status.
+    /// </returns>
+    public async Task<bool> IsHealthyAsync(CancellationToken token = default)
     {
-        var options = new JsonSerializerOptions
+        try
         {
-            PropertyNameCaseInsensitive = true,
-        };
-        options.Converters.Add(new LocalDateTimeConverter());
-        options.Converters.Add(new NullableLocalDateTimeConverter());
-        return options;
+            using var response = await httpClient.GetAsync(
+                new Uri("/api/health", UriKind.Relative), token);
+            return response.IsSuccessStatusCode;
+        }
+        // Same failure shapes as a record read: unreachable (HttpRequestException) or the
+        // client's own timeout (a TaskCanceledException wrapping a TimeoutException). A
+        // plain TaskCanceledException is the caller's cancellation and propagates.
+        catch (Exception exception) when (
+            exception is HttpRequestException
+                or TaskCanceledException { InnerException: TimeoutException })
+        {
+            return false;
+        }
     }
 
-    /// <summary>Gets all public pages, ordered for navigation.</summary>
-    public Task<IReadOnlyList<Page>> GetPagesAsync(CancellationToken ct = default)
-        => GetRecordsAsync<Page>("pages", "order", ct);
-
-    /// <summary>Gets all public posts, newest first.</summary>
-    public Task<IReadOnlyList<Post>> GetPostsAsync(CancellationToken ct = default)
-        => GetRecordsAsync<Post>("posts", "-date", ct);
-
-    /// <summary>Gets all public events, earliest start first.</summary>
-    public Task<IReadOnlyList<Event>> GetEventsAsync(CancellationToken ct = default)
-        => GetRecordsAsync<Event>("events", "start", ct);
-
-    /// <summary>Gets all public FAQ entries.</summary>
-    public Task<IReadOnlyList<Faq>> GetFaqsAsync(CancellationToken ct = default)
-        => GetRecordsAsync<Faq>("faqs", "topic", ct);
-
-    private async Task<IReadOnlyList<T>> GetRecordsAsync<T>(string collection, string sort, CancellationToken ct)
+    /// <summary>
+    ///     Gets all public records of a collection in a single request.
+    /// </summary>
+    /// <typeparam name="T">
+    ///     The record type to deserialize into.
+    /// </typeparam>
+    /// <param name="collection">
+    ///     The PocketBase collection name, e.g. <c>"posts"</c>.
+    /// </param>
+    /// <param name="sort">
+    ///     The PocketBase sort expression; a leading <c>-</c> sorts descending.
+    /// </param>
+    /// <param name="token">
+    ///     A token to cancel the request.
+    /// </param>
+    /// <param name="expand">
+    ///     A PocketBase <c>expand</c> expression naming relations to resolve inline
+    ///     (comma-separated, dot-nested), or <see langword="null"/> to expand none.
+    /// </param>
+    /// <returns>
+    ///     The public records, or an empty list if there are none.
+    /// </returns>
+    /// <exception cref="PocketBaseUnavailableException">
+    ///     PocketBase could not be reached, timed out, or returned an unreadable response.
+    /// </exception>
+    /// <exception cref="OperationCanceledException">
+    ///     <paramref name="token"/> was canceled by the caller.
+    /// </exception>
+    private async Task<IReadOnlyList<T>> GetRecordsAsync<T>(
+        string collection,
+        string sort,
+        CancellationToken token,
+        string? expand = null)
     {
         // filter=public=true keeps drafts out; perPage is large enough to fetch
         // every record in a single page given the small content volume.
@@ -53,7 +185,30 @@ public sealed class PocketBaseClient(HttpClient http)
                   + $"?perPage=500&filter={Uri.EscapeDataString("public=true")}"
                   + $"&sort={Uri.EscapeDataString(sort)}";
 
-        var result = await http.GetFromJsonAsync<RecordList<T>>(url, JsonOptions, ct);
-        return result?.Items ?? [];
+        // Add expand only when asked, so callers that need no relations send the
+        // leaner request they did before.
+        if (expand is not null)
+            url += $"&expand={Uri.EscapeDataString(expand)}";
+
+        try
+        {
+            var result = await httpClient.GetFromJsonAsync<RecordList<T>>(url, token);
+            return result?.Items ?? [];
+        }
+        // These three mean PocketBase itself failed: it was unreachable
+        // (HttpRequestException), the request to it timed out (a TaskCanceledException
+        // whose inner exception is a TimeoutException, which is how HttpClient surfaces
+        // its own timeout), or it answered with something we could not read
+        // (JsonException). A plain TaskCanceledException with no inner TimeoutException
+        // is the caller's own cancellation via token and is deliberately not caught --
+        // it propagates as OperationCanceledException so an aborted request stays an
+        // abort, not a fault.
+        catch (Exception exception) when (
+            exception is HttpRequestException
+                or JsonException
+                or TaskCanceledException { InnerException: TimeoutException })
+        {
+            throw new PocketBaseUnavailableException($"Could not read collection '{collection}'.", exception);
+        }
     }
 }

Elternbeirat.PocketBase/PocketBaseUnavailableException.cs

@@ -0,0 +1,49 @@
+namespace Elternbeirat.PocketBase;
+
+/// <summary>
+///     Thrown when PocketBase could not be reached, timed out, or returned a
+///     response that could not be read.
+/// </summary>
+/// <remarks>
+///     This is the one failure the content pages need to distinguish: the site is
+///     up but its data store is not, which is an HTTP 503, not a 404. Which
+///     low-level exceptions mean that (a transport error, a timeout, unreadable
+///     JSON) is <see cref="PocketBaseClient"/>'s concern; callers catch only this
+///     type and need not know how the client talks to PocketBase.
+/// </remarks>
+public sealed class PocketBaseUnavailableException : Exception
+{
+    /// <summary>
+    ///     Initializes a new instance with a default message.
+    /// </summary>
+    public PocketBaseUnavailableException()
+        : base("PocketBase is unavailable.")
+    {
+    }
+
+    /// <summary>
+    ///     Initializes a new instance with the given message.
+    /// </summary>
+    /// <param name="message">
+    ///     The message that describes the error.
+    /// </param>
+    public PocketBaseUnavailableException(string message)
+        : base(message)
+    {
+    }
+
+    /// <summary>
+    ///     Initializes a new instance with the given message and the underlying
+    ///     failure that caused it.
+    /// </summary>
+    /// <param name="message">
+    ///     The message that describes the error.
+    /// </param>
+    /// <param name="innerException">
+    ///     The transport, timeout, or deserialization exception that was caught.
+    /// </param>
+    public PocketBaseUnavailableException(string message, Exception innerException)
+        : base(message, innerException)
+    {
+    }
+}

Elternbeirat.PocketBase/RecordList.cs

@@ -3,13 +3,25 @@ using System.Text.Json.Serialization;
 namespace Elternbeirat.PocketBase;
 
 /// <summary>
-/// The envelope PocketBase wraps a records list response in. Only <see cref="Items"/>
-/// is used; the paging fields are ignored because content volumes are small and the
-/// client requests a large page size in a single call.
+///     The envelope PocketBase wraps a records list response in.
 /// </summary>
-/// <typeparam name="T">The record type inside <c>items</c>.</typeparam>
+/// <remarks>
+///     Only <see cref="Items"/> is mapped. The paging fields (<c>page</c>,
+///     <c>perPage</c>, <c>totalItems</c>, <c>totalPages</c>) are ignored, because
+///     content volumes are small and <see cref="PocketBaseClient"/> fetches every
+///     record in a single request.
+/// </remarks>
+/// <typeparam name="T">
+///     The record type inside <c>items</c>.
+/// </typeparam>
 internal sealed record RecordList<T>
 {
+    /// <summary>
+    ///     Gets the records of the requested page.
+    /// </summary>
+    /// <value>
+    ///     The records, or an empty list if the collection has no matching records.
+    /// </value>
     [JsonPropertyName("items")]
     public IReadOnlyList<T> Items { get; init; } = [];
 }

Elternbeirat.Web.Tests/EventDateFormatTests.cs

@@ -0,0 +1,105 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Features.Events;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the calendar sheet texts and the time line beside it. Pure logic,
+/// no PocketBase needed. All times are Berlin wall-clock, as the contract delivers them.
+/// </summary>
+public class EventDateFormatTests
+{
+    private static Event Event(DateTime start, DateTime? end = null) =>
+        new() { Id = "test", Title = "Termin", Start = start, End = end };
+
+    [Theory]
+    [InlineData(1, "Jan")]
+    [InlineData(3, "März")]
+    [InlineData(5, "Mai")]
+    [InlineData(10, "Okt")]
+    [InlineData(12, "Dez")]
+    public void Sheet_month_is_the_German_short_month_without_period(int month, string expected) =>
+        EventDateFormat.SheetMonth(new DateTime(2026, month, 1)).ShouldBe(expected);
+
+    [Fact]
+    public void Sheet_day_has_no_leading_zero() =>
+        EventDateFormat.SheetDay(new DateTime(2026, 10, 8, 19, 30, 0)).ShouldBe("8");
+
+    [Theory]
+    [InlineData(8, "Do")]  // Thursday, 8 October 2026
+    [InlineData(11, "So")] // Sunday
+    public void Sheet_weekday_is_the_German_short_weekday_without_period(int day, string expected) =>
+        EventDateFormat.SheetWeekday(new DateTime(2026, 10, day)).ShouldBe(expected);
+
+    [Fact]
+    public void Past_all_day_event_shows_the_day_and_no_time()
+    {
+        var allDay = Event(new DateTime(2026, 11, 13));
+
+        EventDateFormat.PastDays(allDay).ShouldBe("13. November");
+        EventDateFormat.PastTime(allDay).ShouldBe("");
+    }
+
+    [Fact]
+    public void Past_timed_event_shows_the_day_and_its_start_time()
+    {
+        var timed = Event(new DateTime(2026, 9, 1, 19, 0, 0));
+
+        EventDateFormat.PastDays(timed).ShouldBe("1. September"); // no leading zero
+        EventDateFormat.PastTime(timed).ShouldBe("19:00 Uhr");
+    }
+
+    [Fact]
+    public void Past_timed_event_ending_the_same_day_shows_the_time_range()
+    {
+        var evening = Event(new DateTime(2026, 11, 13, 19, 0, 0), new DateTime(2026, 11, 13, 21, 0, 0));
+
+        EventDateFormat.PastDays(evening).ShouldBe("13. November");
+        EventDateFormat.PastTime(evening).ShouldBe("19:00–21:00 Uhr");
+    }
+
+    [Fact]
+    public void Past_multi_day_event_in_one_month_names_the_month_once() =>
+        EventDateFormat.PastDays(Event(new DateTime(2026, 2, 8), new DateTime(2026, 2, 9))).ShouldBe("8.–9. Februar");
+
+    [Fact]
+    public void Past_multi_day_event_across_a_month_names_both_months() =>
+        EventDateFormat.PastDays(Event(new DateTime(2026, 1, 30), new DateTime(2026, 2, 2)))
+            .ShouldBe("30. Januar – 2. Februar");
+
+    [Fact]
+    public void Past_multi_day_event_across_a_year_names_the_end_year() =>
+        // The list is grouped by the start year, so only the end needs its year.
+        EventDateFormat.PastDays(Event(new DateTime(2026, 12, 30), new DateTime(2027, 1, 2)))
+            .ShouldBe("30. Dezember – 2. Januar 2027");
+
+    [Fact]
+    public void Past_timed_multi_day_event_shows_only_the_start_time() =>
+        // A range here would read as the daily hours.
+        EventDateFormat.PastTime(Event(new DateTime(2026, 2, 8, 9, 0, 0), new DateTime(2026, 2, 9, 13, 0, 0)))
+            .ShouldBe("09:00 Uhr");
+
+    [Fact]
+    public void Span_of_a_timed_event_without_end_is_its_start_time() =>
+        EventDateFormat.Span(Event(new DateTime(2026, 10, 8, 19, 30, 0))).ShouldBe("19:30 Uhr");
+
+    [Fact]
+    public void Span_of_a_same_day_event_is_the_time_range() =>
+        EventDateFormat.Span(Event(new DateTime(2026, 10, 8, 19, 30, 0), new DateTime(2026, 10, 8, 21, 0, 0)))
+            .ShouldBe("19:30–21:00 Uhr");
+
+    [Fact]
+    public void Span_of_a_multi_day_event_names_the_last_day() =>
+        EventDateFormat.Span(Event(new DateTime(2026, 10, 9, 9, 0, 0), new DateTime(2026, 10, 11, 13, 0, 0)))
+            .ShouldBe("09:00 Uhr bis Sonntag, 11. Oktober 2026, 13:00 Uhr");
+
+    [Fact]
+    public void Span_of_a_multi_day_all_day_event_has_no_times() =>
+        EventDateFormat.Span(Event(new DateTime(2026, 10, 9), new DateTime(2026, 10, 11)))
+            .ShouldBe("bis Sonntag, 11. Oktober 2026");
+
+    [Fact]
+    public void Span_of_a_single_all_day_event_is_empty() =>
+        // The sheet already shows the day; there is nothing left to say.
+        EventDateFormat.Span(Event(new DateTime(2026, 10, 8))).ShouldBe("");
+}

Elternbeirat.Web.Tests/FixedTimeProvider.cs

@@ -0,0 +1,13 @@
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// A clock that always shows the same moment, so tests can decide what "today" is
+/// (e.g. before or after the fixture's events). Hand-written instead of
+/// Microsoft.Extensions.TimeProvider.Testing: overriding one method does not justify
+/// a new package.
+/// </summary>
+/// <param name="now">The moment the clock shows.</param>
+internal sealed class FixedTimeProvider(DateTimeOffset now) : TimeProvider
+{
+    public override DateTimeOffset GetUtcNow() => now;
+}

Elternbeirat.Web.Tests/FooterYearTests.cs

@@ -0,0 +1,27 @@
+using Elternbeirat.Web.Features.Layout;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the footer's copyright year. Pure logic, no PocketBase needed.
+/// </summary>
+public class FooterYearTests
+{
+    [Fact]
+    public void New_year_in_Berlin_wins_over_the_UTC_year()
+    {
+        // 23:30 UTC on New Year's Eve is already 00:30 in Berlin (winter time, +1),
+        // so the footer must show the new year although the server clock says the old.
+        var now = new DateTimeOffset(2026, 12, 31, 23, 30, 0, TimeSpan.Zero);
+
+        FooterYear.For(now).ShouldBe(2027);
+    }
+
+    [Fact]
+    public void Ordinary_day_keeps_its_year()
+    {
+        var now = new DateTimeOffset(2026, 10, 1, 12, 0, 0, TimeSpan.Zero);
+
+        FooterYear.For(now).ShouldBe(2026);
+    }
+}

Elternbeirat.Web.Tests/HomeIntroTests.cs

@@ -0,0 +1,67 @@
+using Elternbeirat.Web.Features.Home;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for taking the home page's body apart into heading, intro and
+/// buttons. Pure logic, no PocketBase needed.
+/// </summary>
+public class HomeIntroTests
+{
+    [Fact]
+    public void Body_splits_into_title_intro_and_buttons()
+    {
+        var intro = HomeIntro.Parse(
+            "# Willkommen\n\nSchön, dass Sie da sind.\n\n[Kommende Termine](/events)\n[Kontakt aufnehmen](/contact)");
+
+        intro.Title.ShouldBe("Willkommen");
+        intro.IntroHtml.ShouldBe("<p>Schön, dass Sie da sind.</p>\n");
+        intro.Links.ShouldBe(
+        [
+            new HomeLink("/events", "Kommende Termine"),
+            new HomeLink("/contact", "Kontakt aufnehmen"),
+        ]);
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    public void Empty_body_gives_the_fallback(string? markdown) =>
+        HomeIntro.Parse(markdown).ShouldBe(HomeIntro.Fallback);
+
+    [Fact]
+    public void Body_without_heading_keeps_the_fallback_title_and_all_text()
+    {
+        var intro = HomeIntro.Parse("Nur ein Absatz.");
+
+        intro.Title.ShouldBe(HomeIntro.FallbackTitle);
+        intro.IntroHtml.ShouldContain("Nur ein Absatz.");
+        intro.Links.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Last_paragraph_with_other_text_stays_intro()
+    {
+        // "oder" would get lost in a button row, so the paragraph stays text.
+        var intro = HomeIntro.Parse("# Hallo\n\n[Termine](/events) oder [Kontakt](/contact)");
+
+        intro.Links.ShouldBeEmpty();
+        intro.IntroHtml.ShouldContain("href=\"/events\"");
+    }
+
+    [Fact]
+    public void Link_paragraph_that_is_not_last_stays_intro()
+    {
+        var intro = HomeIntro.Parse("# Hallo\n\n[Termine](/events)\n\nSchlusssatz.");
+
+        intro.Links.ShouldBeEmpty();
+        intro.IntroHtml.ShouldContain("Schlusssatz.");
+    }
+
+    [Fact]
+    public void Heading_markup_is_reduced_to_its_text()
+    {
+        HomeIntro.Parse("# Willkommen beim **Elternbeirat**").Title.ShouldBe("Willkommen beim Elternbeirat");
+    }
+}

Elternbeirat.Web.Tests/IconSetTests.cs

@@ -0,0 +1,30 @@
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the icon lookup behind the Icon component. Pure logic, no
+/// PocketBase needed.
+/// </summary>
+public class IconSetTests
+{
+    [Theory]
+    [InlineData("calendar")]
+    [InlineData("map-pin")]
+    [InlineData("help-circle")] // kept under its old name although Lucide renamed it
+    public void Known_name_returns_svg_markup(string name)
+    {
+        var markup = IconSet.Find(name);
+
+        markup.ShouldNotBeNullOrWhiteSpace();
+        markup.ShouldStartWith("<"); // SVG child elements, ready to inline
+    }
+
+    [Theory]
+    [InlineData("does-not-exist")]
+    [InlineData("Calendar")] // lookup is case-sensitive, names are code identifiers
+    [InlineData("")]
+    [InlineData(null)]
+    public void Unknown_name_returns_null(string? name) =>
+        IconSet.Find(name).ShouldBeNull();
+}

Elternbeirat.Web.Tests/MarkdownTests.cs

@@ -0,0 +1,187 @@
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the Markdown pipeline behind every editor-written body. Pure logic,
+/// no PocketBase needed.
+/// </summary>
+public class MarkdownTests
+{
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    public void Empty_input_renders_nothing(string? markdown) =>
+        Markdown.ToHtml(markdown).ShouldBe("");
+
+    [Fact]
+    public void Custom_container_renders_a_div_with_its_name_as_class()
+    {
+        var html = Markdown.ToHtml("::: kennzahlen\n- **seit 1975** Gründung\n:::");
+
+        html.ShouldContain("<div class=\"kennzahlen\">");
+        html.ShouldContain("<strong>seit 1975</strong>");
+    }
+
+    [Fact]
+    public void Unknown_container_renders_its_content_as_normal_text()
+    {
+        // A typo in the block name must cost the styling, never the text.
+        var html = Markdown.ToHtml("::: gibtsnicht\nNormaler Text.\n:::");
+
+        html.ShouldContain("<p>Normaler Text.</p>");
+        html.ShouldNotContain(":::");
+    }
+
+    [Fact]
+    public void Raw_html_is_escaped_not_passed_through()
+    {
+        // The body is rendered as a MarkupString; a passed-through <script> would run
+        // in the visitor's browser.
+        var html = Markdown.ToHtml("Hallo <script>alert(1)</script>\n\n<div onclick=\"x()\">Box</div>");
+
+        html.ShouldNotContain("<script>");
+        html.ShouldNotContain("<div onclick");
+        html.ShouldContain("&lt;script&gt;");
+    }
+
+    [Fact]
+    public void Pipe_table_renders_a_table()
+    {
+        var html = Markdown.ToHtml("| Fach | Raum |\n|---|---|\n| Mathe | A1 |");
+
+        html.ShouldContain("<table>");
+        html.ShouldContain("<td>Mathe</td>");
+    }
+
+    [Theory]
+    [InlineData("[kontakt@example.org](mailto:kontakt@example.org)")]
+    [InlineData("<mailto:kontakt@example.org>")] // autolink
+    [InlineData("[Satzung](/dokumente/satzung.pdf)  ")] // trailing whitespace ignored
+    public void Link_alone_in_its_paragraph_is_marked(string markdown) =>
+        Markdown.ToHtml(markdown).ShouldStartWith($"<p class=\"{Markdown.LoneLinkClass}\">");
+
+    [Theory]
+    [InlineData("Schreiben Sie an [uns](mailto:kontakt@example.org).")]
+    [InlineData("[eins](/a) und [zwei](/b)")]
+    [InlineData("![Foto](/bild.jpg)")] // an image is not a link
+    [InlineData("Nur Text.")]
+    public void Paragraph_that_is_not_a_single_link_is_not_marked(string markdown) =>
+        Markdown.ToHtml(markdown).ShouldNotContain(Markdown.LoneLinkClass);
+
+    [Fact]
+    public void Lone_link_in_a_tight_list_marks_the_list_item()
+    {
+        // A tight list renders no <p>, so the class has to sit on the <li>.
+        var html = Markdown.ToHtml("- [Antrag](/dokumente/antrag.pdf)\n- Text mit [Link](/x)");
+
+        html.ShouldContain($"<li class=\"{Markdown.LoneLinkClass}\"><a href=\"/dokumente/antrag.pdf\">");
+        html.ShouldContain("<li>Text mit");
+    }
+
+    [Fact]
+    public void First_sentence_skips_the_heading_and_drops_the_markdown()
+    {
+        var sentence = Markdown.FirstSentence(
+            "# Vorstand\n\nWir sind **sieben** [Eltern](/board). Der Rest folgt.");
+
+        sentence.ShouldBe("Wir sind sieben Eltern.");
+    }
+
+    [Theory]
+    [InlineData("Wir helfen z. B. bei Anträgen. Mehr dazu unten.", "Wir helfen z. B. bei Anträgen.")]
+    [InlineData("Gewählt am 13. November 2025. Danach mehr.", "Gewählt am 13. November 2025.")]
+    [InlineData("Haben Sie Fragen? Schreiben Sie uns.", "Haben Sie Fragen?")]
+    [InlineData("Ohne Satzzeichen am Ende", "Ohne Satzzeichen am Ende")]
+    public void First_sentence_ends_at_a_real_sentence_end(string markdown, string expected) =>
+        Markdown.FirstSentence(markdown).ShouldBe(expected);
+
+    [Fact]
+    public void First_sentence_joins_soft_line_breaks_with_a_space()
+    {
+        // Editors wrap long lines; the wrap must not glue two words together.
+        Markdown.FirstSentence("Erste Zeile\nzweite Zeile.").ShouldBe("Erste Zeile zweite Zeile.");
+    }
+
+    [Fact]
+    public void First_sentence_drops_a_colon_that_leads_into_a_list() =>
+        Markdown.FirstSentence("Formulare zum Herunterladen:\n\n- Antrag")
+            .ShouldBe("Formulare zum Herunterladen");
+
+    [Fact]
+    public void First_sentence_is_never_cut_short()
+    {
+        // Long teasers are clamped by the tile's CSS, not by a character count.
+        var sentence = string.Join(' ', Enumerable.Repeat("Wort", 60)) + ".";
+
+        Markdown.FirstSentence(sentence).ShouldBe(sentence);
+    }
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("# Nur eine Überschrift")]
+    [InlineData("- nur\n- eine Liste")]
+    [InlineData("::: hinweis\nText im Baustein.\n:::")]
+    public void First_sentence_is_empty_without_a_top_level_paragraph(string? markdown) =>
+        Markdown.FirstSentence(markdown).ShouldBe("");
+
+    [Theory]
+    [InlineData(null)]
+    [InlineData("")]
+    [InlineData("   ")]
+    [InlineData("## Nur eine Überschrift")]
+    public void Teaser_is_empty_without_paragraph_text(string? markdown) =>
+        Markdown.Teaser(markdown).ShouldBe("");
+
+    [Fact]
+    public void Teaser_keeps_a_short_body_whole() =>
+        Markdown.Teaser("Kurzer Text.").ShouldBe("Kurzer Text.");
+
+    [Fact]
+    public void Teaser_removes_markdown_and_skips_headings()
+    {
+        // Emphasis and link markup go, link text stays; the heading would repeat the
+        // card title, so it is left out. Paragraphs and list items are joined.
+        var teaser = Markdown.Teaser(
+            "## Rückblick\n\nDer **Basar** war ein [Erfolg](/posts).\n\n- Danke an alle\n- Bis bald");
+
+        teaser.ShouldBe("Der Basar war ein Erfolg. Danke an alle Bis bald");
+    }
+
+    [Fact]
+    public void Teaser_cuts_a_long_body_at_a_word_boundary()
+    {
+        var teaser = Markdown.Teaser("Der Basar war ein voller Erfolg.", 20);
+
+        // 20 characters end inside "voller"; the cut falls back to the space before it.
+        teaser.ShouldBe("Der Basar war ein…");
+    }
+
+    [Fact]
+    public void Teaser_keeps_a_word_that_ends_exactly_at_the_limit() =>
+        Markdown.Teaser("Der Basar war ein voller Erfolg.", 17).ShouldBe("Der Basar war ein…");
+
+    [Fact]
+    public void Teaser_drops_punctuation_left_at_the_cut() =>
+        Markdown.Teaser("Liebe Eltern, der Basar war schön.", 14).ShouldBe("Liebe Eltern…");
+
+    [Fact]
+    public void Teaser_cuts_a_single_overlong_word_hard() =>
+        Markdown.Teaser("Donaudampfschifffahrtsgesellschaft", 10).ShouldBe("Donaudampf…");
+
+    [Fact]
+    public void Teaser_defaults_to_160_characters_plus_ellipsis()
+    {
+        var body = string.Join(' ', Enumerable.Repeat("Wort", 100)); // 499 characters
+
+        var teaser = Markdown.Teaser(body);
+
+        teaser.Length.ShouldBeLessThanOrEqualTo(Markdown.TeaserLength + 1);
+        teaser.ShouldEndWith("Wort…");
+    }
+
+    [Fact]
+    public void Teaser_rejects_a_length_of_zero() =>
+        Should.Throw<ArgumentOutOfRangeException>(() => Markdown.Teaser("Text", 0));
+}

Elternbeirat.Web.Tests/NavBuilderTests.cs

@@ -8,8 +8,10 @@ namespace Elternbeirat.Web.Tests;
 /// </summary>
 public class NavBuilderTests
 {
+    // Id is required on the record but irrelevant to navigation, so a fixed
+    // placeholder keeps these cases focused on slug/location/order/title.
     private static Page Page(string slug, string location, double order, string title) =>
-        new() { Slug = slug, Location = location, Order = order, Title = title };
+        new() { Id = "test", Slug = slug, Location = location, Order = order, Title = title };
 
     [Fact]
     public void Header_keeps_only_header_pages_ordered_by_order()
@@ -19,7 +21,6 @@ public class NavBuilderTests
             Page("board", "header", 2, "Vorstandsteam"),
             Page("home", "header", 1, "Start"),
             Page("imprint", "footer", 1, "Impressum"),
-            Page("hidden", "", 1, "Unterseite"),
         };
 
         var header = NavBuilder.Header(pages);
@@ -42,6 +43,15 @@ public class NavBuilderTests
         footer.Select(link => link.Title).ShouldBe(["Impressum", "Datenschutz"]);
     }
 
+    [Fact]
+    public void No_pages_give_empty_menus()
+    {
+        // PocketBase down or nothing published yet: both menus are empty lists, not
+        // null, so the layout can simply skip a column instead of crashing.
+        NavBuilder.Header([]).ShouldBeEmpty();
+        NavBuilder.Footer([]).ShouldBeEmpty();
+    }
+
     [Fact]
     public void Home_page_maps_to_root_every_other_slug_to_its_path()
     {
@@ -56,13 +66,4 @@ public class NavBuilderTests
         header[0].Href.ShouldBe("/");
         header[1].Href.ShouldBe("/board");
     }
-
-    [Fact]
-    public void Pages_without_a_location_never_appear_in_a_menu()
-    {
-        var pages = new[] { Page("hidden", "", 1, "Unterseite") };
-
-        NavBuilder.Header(pages).ShouldBeEmpty();
-        NavBuilder.Footer(pages).ShouldBeEmpty();
-    }
 }

Elternbeirat.Web.Tests/PocketBaseClientTests.cs

@@ -17,20 +17,20 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
 
         var events = await client.GetEventsAsync();
 
-        // Two seeded events, earliest start first.
-        events.Select(e => e.Title).ShouldBe(["Elternbeiratssitzung", "Herbstbasar"]);
-        events.ShouldAllBe(e => e.Public);
+        // Three seeded events, earliest start first.
+        events.Select(@event => @event.Title).ShouldBe(["Projekttage", "Infoabend Klasse 5", "Elternbeiratssitzung", "Herbstbasar"]);
     }
 
     [Fact]
-    public async Task Event_time_is_read_as_wall_clock_not_shifted()
+    public async Task Event_utc_is_converted_to_berlin_wall_clock()
     {
         var client = pocketBase.CreateClient();
 
         var events = await client.GetEventsAsync();
 
-        // The meeting is seeded as 19:30; by the timezone convention the number is
-        // taken at face value, so no shift to 20:30/21:30 happens.
+        // The meeting is seeded as 17:30Z. October is summer time (UTC+2), so the
+        // converter turns it into 19:30 Berlin wall-clock -- the time an editor
+        // entered in the admin form.
         var meeting = events.FirstOrDefault(e =>
             e.Title.Contains("Elternbeiratssitzung", StringComparison.Ordinal));
         meeting.ShouldNotBeNull();
@@ -46,8 +46,8 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
 
         var events = await client.GetEventsAsync();
 
-        var meeting = events.Single(e => e.Title == "Elternbeiratssitzung");
-        var basar = events.Single(e => e.Title == "Herbstbasar");
+        var meeting = events.Single(@event => @event.Title == "Elternbeiratssitzung");
+        var basar = events.Single(@event => @event.Title == "Herbstbasar");
         meeting.End.ShouldBeNull();      // no end seeded
         basar.End.ShouldNotBeNull();     // end seeded
     }
@@ -60,7 +60,21 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
         var posts = await client.GetPostsAsync();
 
         // Sorted by -date: March before January.
-        posts.Select(p => p.Title).ShouldBe(["Neuer Vorstand", "Neue Sporthalle"]);
+        posts.Select(post => post.Title).ShouldBe(["Neuer Vorstand", "Neue Sporthalle"]);
+    }
+
+    [Fact]
+    public async Task Post_date_is_the_berlin_calendar_day()
+    {
+        var client = pocketBase.CreateClient();
+
+        var posts = await client.GetPostsAsync();
+
+        // The post is seeded as 2026-03-01 23:30Z, which is 2 March 00:30 in Berlin.
+        // The date is the Berlin day the editor picked (2 March), not the raw UTC
+        // day (1 March) -- the time zone is applied before the day is taken.
+        var post = posts.Single(p => p.Title == "Neuer Vorstand");
+        post.Date.ShouldBe(new DateOnly(2026, 3, 2));
     }
 
     [Fact]
@@ -71,9 +85,9 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
         var pages = await client.GetPagesAsync();
 
         // The draft (public=false) must be filtered out, the public ones present.
-        pages.ShouldNotContain(p => p.Slug == "draft");
-        pages.ShouldContain(p => p.Slug == "home");
-        pages.ShouldContain(p => p.Slug == "contact");
+        pages.ShouldNotContain(page => page.Slug == "draft");
+        pages.ShouldContain(page => page.Slug == "home");
+        pages.ShouldContain(page => page.Slug == "contact");
     }
 
     [Fact]
@@ -85,6 +99,8 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
 
         var home = pages.Single(p => p.Slug == "home");
         home.Embed.ShouldBe(["posts", "events"], ignoreOrder: true);
+        // Home sits in the header like every other page (location is required); it
+        // is the single source of the home nav link.
         home.Location.ShouldBe("header");
     }
 
@@ -95,7 +111,10 @@ public sealed class PocketBaseClientTests(PocketBaseFixture pocketBase)
 
         var faqs = await client.GetFaqsAsync();
 
-        faqs.Select(f => f.Topic).ShouldBe(["mensa", "schliessfach"], ignoreOrder: true);
-        faqs.ShouldAllBe(f => !string.IsNullOrWhiteSpace(f.Question));
+        // The topic relation is expanded, so each entry carries its topic. The two
+        // seeded topics are ordered (Mensa order 1 before Schließfächer order 2), and
+        // GetFaqsAsync sorts by topic.order, so the groups come back in that order.
+        faqs.Select(faq => faq.Topic?.Title).ShouldBe(["Mensa und Mittagessen", "Schließfächer"]);
+        faqs.ShouldAllBe(faq => !string.IsNullOrWhiteSpace(faq.Question));
     }
 }

Elternbeirat.Web.Tests/PocketBaseFixture.cs

@@ -220,30 +220,51 @@ public sealed class PocketBaseFixture : IAsyncLifetime
     private static async Task SeedRecordsAsync(HttpClient http)
     {
         // Pages that the route smoke tests reach through the navigation, the
-        // footer or the FAQ hub. Header pages carry a location+order; the FAQ
-        // sub-pages are plain content pages without a menu slot. All public.
+        // footer or the FAQ hub. Every page carries a location ("header" or
+        // "footer") -- the field is required, matching production. All public.
+        // The home page sits in the header at order 1, like production; the brand
+        // links home too, but the nav entry is the single source of the home link.
         await CreateRecordAsync(http, "pages", new
         {
-            title = "Startseite", body = "# Willkommen", location = "header",
+            // The body drives the home hero: "# heading" -> h1, the paragraph -> intro,
+            // the last paragraph of only links -> the button row.
+            title = "Start",
+            body = "# Willkommen\n\nSchön, dass Sie da sind.\n\n[Kommende Termine](/events)\n[Kontakt aufnehmen](/contact)",
+            location = "header",
             order = 1, slug = "home", embed = new[] { "posts", "events" }, @public = true,
         });
         await CreateRecordAsync(http, "pages", new
         {
-            title = "Vorstandsteam", body = "# Vorstand", location = "header",
+            // The body uses the "::: team" block like production: one card with the
+            // full convention (bold name, role, italic duties, note) in a large block,
+            // and one item without the convention, which must become a plain card.
+            title = "Vorstandsteam",
+            body = "## Vorsitz\n\n::: team gross\n"
+                   + "- **Jenny Reger-Stilgenbauer** (Vorsitzende)  \n  *Schulkonferenz, Mensarat*  \n  Mitglied im Gesamtelternbeirat.\n"
+                   + ":::\n\n## Beisitz\n\n::: team\n"
+                   + "- Özlem Ünal, Beisitz\n"
+                   + ":::",
+            location = "header",
             order = 2, slug = "board", embed = Array.Empty<string>(), @public = true,
         });
         await CreateRecordAsync(http, "pages", new
         {
-            // Carries an embed so the ContentPage embed path is covered: /patrons
-            // renders its body plus the FAQ teaser.
-            title = "Förderverein", body = "# Förderverein", location = "header",
-            order = 3, slug = "patrons", embed = new[] { "faqs" }, @public = true,
+            // The body uses a design block, so the smoke tests can follow a ":::"
+            // container through PocketBase and the page into the rendered HTML.
+            title = "Förderverein",
+            body = "Der Förderverein unterstützt die Schule.\n\n::: kennzahlen\n- **seit 1975** Gründung\n:::",
+            location = "header",
+            order = 3, slug = "patrons", embed = Array.Empty<string>(), @public = true,
         });
-        // Nav placeholder for the FAQ list (route /faqs is served by FaqList,
-        // which shadows this page). Slug matches production's "faqs" nav entry.
+        // Page record for the FAQ list. Route /faqs is served by FaqList, which reads
+        // this record for its heading and intro (title + body) and renders the topic
+        // cards itself. Slug matches production's "faqs" nav entry. The body carries
+        // no "# heading": the title already renders as the h1.
         await CreateRecordAsync(http, "pages", new
         {
-            title = "FAQ", body = "# Häufige Fragen", location = "header",
+            title = "FAQs",
+            body = "Wählen Sie ein Thema, um die passenden Fragen zu sehen.",
+            location = "header",
             order = 4, slug = "faqs", embed = Array.Empty<string>(), @public = true,
         });
         await CreateRecordAsync(http, "pages", new
@@ -251,10 +272,29 @@ public sealed class PocketBaseFixture : IAsyncLifetime
             title = "Downloads", body = "# Downloads", location = "header",
             order = 5, slug = "downloads", embed = Array.Empty<string>(), @public = true,
         });
+        // Page records for the posts and events lists. Routes /posts and /events are
+        // served by PostList and EventList, which read these records for their heading
+        // and intro (title + body) and render the list themselves, just like FaqList.
+        // The body carries no "# heading": the title already renders as the h1.
         await CreateRecordAsync(http, "pages", new
         {
-            title = "FAQ Mensa", body = "# Mensa", location = "",
-            order = 0, slug = "faq-lunch", embed = Array.Empty<string>(), @public = true,
+            title = "Beiträge", body = "Neuigkeiten aus dem Elternbeirat.",
+            location = "header",
+            order = 6, slug = "posts", embed = Array.Empty<string>(), @public = true,
+        });
+        await CreateRecordAsync(http, "pages", new
+        {
+            title = "Termine", body = "Sitzungen und Veranstaltungen auf einen Blick.",
+            location = "header",
+            order = 7, slug = "events", embed = Array.Empty<string>(), @public = true,
+        });
+        // A plain content page reached only by its slug (not shown in the header),
+        // so the catch-all "/{slug}" ContentPage route stays covered. It carries a
+        // valid location because the field is required; footer keeps it low-key.
+        await CreateRecordAsync(http, "pages", new
+        {
+            title = "FAQ Mensa", body = "# Mensa", location = "footer",
+            order = 9, slug = "faq-lunch", embed = Array.Empty<string>(), @public = true,
         });
         await CreateRecordAsync(http, "pages", new
         {
@@ -278,10 +318,13 @@ public sealed class PocketBaseFixture : IAsyncLifetime
             order = 9, slug = "draft", embed = Array.Empty<string>(), @public = false,
         });
 
-        // Posts: newest first once sorted by -date.
+        // Posts: newest first once sorted by -date. The first post is stored as
+        // 2026-03-01 23:30Z on purpose: that is 2 March 00:30 in Berlin (winter,
+        // UTC+1). An editor who picked 2 March must get 2 March back -- the date is
+        // the Berlin day, so it must NOT be read as the raw UTC day (1 March).
         await CreateRecordAsync(http, "posts", new
         {
-            date = "2026-03-01 00:00:00.000Z", title = "Neuer Vorstand",
+            date = "2026-03-01 23:30:00.000Z", title = "Neuer Vorstand",
             body = "Text", slug = "new-board", @public = true,
         });
         await CreateRecordAsync(http, "posts", new
@@ -290,40 +333,84 @@ public sealed class PocketBaseFixture : IAsyncLifetime
             body = "Text", slug = "new-hall", @public = true,
         });
 
-        // Events: the meeting carries the wall-clock time the timezone test checks.
+        // Events: PocketBase stores UTC. The meeting is 19:30 Berlin; October is
+        // summer time (UTC+2), so it is stored as 17:30Z and the timezone test
+        // expects 19:30 back. The Herbstbasar is 09:00-13:00 Berlin in November
+        // (winter, UTC+1), stored as 08:00Z-12:00Z.
         await CreateRecordAsync(http, "events", new
         {
-            start = "2026-10-08 19:30:00.000Z", title = "Elternbeiratssitzung",
+            start = "2026-10-08 17:30:00.000Z", title = "Elternbeiratssitzung",
             location = "Aula", note = "", @public = true,
         });
         await CreateRecordAsync(http, "events", new
         {
-            start = "2026-11-22 09:00:00.000Z", end = "2026-11-22 13:00:00.000Z",
+            start = "2026-11-22 08:00:00.000Z", end = "2026-11-22 12:00:00.000Z",
             title = "Herbstbasar", location = "Schulhof", note = "", @public = true,
         });
+        // Two past events (before the smoke tests' clock of 1 October 2026), so the
+        // folded-up "Vergangene Termine" section on /events has something to show:
+        // one with a time (19:00 Berlin, summer time), and one over several days
+        // without a time. All-day means 00:00 Berlin, i.e. 22:00Z the day before.
+        await CreateRecordAsync(http, "events", new
+        {
+            start = "2026-09-10 17:00:00.000Z", title = "Infoabend Klasse 5",
+            location = "Aula", note = "", @public = true,
+        });
+        await CreateRecordAsync(http, "events", new
+        {
+            start = "2026-07-19 22:00:00.000Z", end = "2026-07-21 22:00:00.000Z",
+            title = "Projekttage", location = "", note = "", @public = true,
+        });
 
-        // Faqs: two topics.
+        // Faq topics: two, ordered. The topics own the grouping and the order the FAQ
+        // page shows the groups in (cafeteria before lockers). Titles stay German for
+        // visitors; slugs are English, as for every route.
+        var lunchTopicId = await CreateRecordAsync(http, "faq_topics", new
+        {
+            title = "Mensa und Mittagessen", slug = "cafeteria", intro = "",
+            order = 1, @public = true,
+        });
+        var lockerTopicId = await CreateRecordAsync(http, "faq_topics", new
+        {
+            title = "Schließfächer", slug = "lockers", intro = "",
+            order = 2, @public = true,
+        });
+
+        // Faqs: each points at its topic through the "topic" relation (the created
+        // topic id), and carries its own order within the topic.
         await CreateRecordAsync(http, "faqs", new
         {
             question = "Wann gibt es Mittagessen?", answer = "Um 12 Uhr.",
-            topic = "mensa", @public = true,
+            topic = lunchTopicId, order = 1, @public = true,
         });
         await CreateRecordAsync(http, "faqs", new
         {
             question = "Wie viel kostet ein Schließfach?", answer = "20 Euro.",
-            topic = "schliessfach", @public = true,
+            topic = lockerTopicId, order = 1, @public = true,
         });
     }
 
-    private static async Task CreateRecordAsync(HttpClient http, string collection, object record)
+    private static async Task<string> CreateRecordAsync(HttpClient http, string collection, object record)
     {
         var response = await http.PostAsJsonAsync($"/api/collections/{collection}/records", record);
         response.EnsureSuccessStatusCode();
+
+        // Return the created record's id so a caller can seed a relation to it (e.g. a
+        // faq pointing at its topic). Callers that do not need it just ignore the value.
+        var created = await response.Content.ReadFromJsonAsync<CreatedRecord>();
+        return created?.Id ?? throw new InvalidOperationException(
+            $"PocketBase returned no id for the created '{collection}' record.");
+    }
+
+    private sealed record CreatedRecord
+    {
+        [System.Text.Json.Serialization.JsonPropertyName("id")]
+        public string Id { get; init; } = string.Empty;
     }
 
     private sealed record AuthResponse
     {
         [System.Text.Json.Serialization.JsonPropertyName("token")]
-        public string Token { get; init; } = "";
+        public string Token { get; init; } = string.Empty;
     }
 }

Elternbeirat.Web.Tests/PocketBaseHealthCacheTests.cs

@@ -0,0 +1,73 @@
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the health cache behind the maintenance gate. The probe is a fake
+/// that counts its calls, so no PocketBase is needed.
+/// </summary>
+public class PocketBaseHealthCacheTests
+{
+    private readonly SteppingClock _clock = new(new DateTimeOffset(2026, 10, 1, 10, 0, 0, TimeSpan.Zero));
+    private int _probes;
+
+    private Func<CancellationToken, Task<bool>> Probe(bool healthy) =>
+        _ =>
+        {
+            _probes++;
+            return Task.FromResult(healthy);
+        };
+
+    [Fact]
+    public async Task Result_is_reused_within_the_lifetime()
+    {
+        var cache = new PocketBaseHealthCache(_clock);
+
+        await cache.IsHealthyAsync(Probe(healthy: true), CancellationToken.None);
+        _clock.Now += PocketBaseHealthCache.Lifetime - TimeSpan.FromSeconds(1);
+        var healthy = await cache.IsHealthyAsync(Probe(healthy: false), CancellationToken.None);
+
+        healthy.ShouldBeTrue();
+        _probes.ShouldBe(1);
+    }
+
+    [Fact]
+    public async Task Stale_result_is_probed_again()
+    {
+        // The way back after an outage: once the lifetime is over, the new answer
+        // replaces the old one.
+        var cache = new PocketBaseHealthCache(_clock);
+
+        await cache.IsHealthyAsync(Probe(healthy: false), CancellationToken.None);
+        _clock.Now += PocketBaseHealthCache.Lifetime;
+        var healthy = await cache.IsHealthyAsync(Probe(healthy: true), CancellationToken.None);
+
+        healthy.ShouldBeTrue();
+        _probes.ShouldBe(2);
+    }
+
+    [Fact]
+    public async Task Unhealthy_result_is_cached_too()
+    {
+        // While PocketBase is down, not every request should wait for a failing probe.
+        var cache = new PocketBaseHealthCache(_clock);
+
+        await cache.IsHealthyAsync(Probe(healthy: false), CancellationToken.None);
+        var healthy = await cache.IsHealthyAsync(Probe(healthy: true), CancellationToken.None);
+
+        healthy.ShouldBeFalse();
+        _probes.ShouldBe(1);
+    }
+
+    /// <summary>
+    /// A clock the test moves forward by hand, to step past the cache lifetime without
+    /// waiting.
+    /// </summary>
+    /// <param name="start">The moment the clock shows at first.</param>
+    private sealed class SteppingClock(DateTimeOffset start) : TimeProvider
+    {
+        public DateTimeOffset Now { get; set; } = start;
+
+        public override DateTimeOffset GetUtcNow() => Now;
+    }
+}

Elternbeirat.Web.Tests/PostNeighborsTests.cs

@@ -0,0 +1,57 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Features.Posts;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the older/newer post next to a post. The list comes newest
+/// first, as from PocketBase; "previous" is the older post. Pure logic, no
+/// PocketBase needed.
+/// </summary>
+public class PostNeighborsTests
+{
+    // Newest first, like PocketBaseClient.GetPostsAsync.
+    private static readonly Post[] Posts = [Post("march"), Post("february"), Post("january")];
+
+    private static Post Post(string slug) =>
+        new() { Id = slug, Title = slug, Slug = slug };
+
+    [Fact]
+    public void Middle_post_has_the_older_as_previous_and_the_newer_as_next()
+    {
+        var neighbors = PostNeighbors.Of(Posts, "february");
+
+        neighbors.Previous?.Slug.ShouldBe("january");
+        neighbors.Next?.Slug.ShouldBe("march");
+    }
+
+    [Fact]
+    public void Newest_post_has_no_next()
+    {
+        var neighbors = PostNeighbors.Of(Posts, "march");
+
+        neighbors.Previous?.Slug.ShouldBe("february");
+        neighbors.Next.ShouldBeNull();
+    }
+
+    [Fact]
+    public void Oldest_post_has_no_previous()
+    {
+        var neighbors = PostNeighbors.Of(Posts, "january");
+
+        neighbors.Previous.ShouldBeNull();
+        neighbors.Next?.Slug.ShouldBe("february");
+    }
+
+    [Fact]
+    public void Only_post_has_no_neighbors() =>
+        PostNeighbors.Of([Post("only")], "only").ShouldBe(new PostNeighbors(null, null));
+
+    [Fact]
+    public void Unknown_slug_has_no_neighbors() =>
+        PostNeighbors.Of(Posts, "december").ShouldBe(new PostNeighbors(null, null));
+
+    [Fact]
+    public void Slug_is_compared_case_insensitively() =>
+        PostNeighbors.Of(Posts, "February").Next?.Slug.ShouldBe("march");
+}

Elternbeirat.Web.Tests/RouteSmokeTests.cs

@@ -1,6 +1,8 @@
 using System.Net;
-using Microsoft.AspNetCore.Hosting;
+using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Mvc.Testing;
+using Microsoft.AspNetCore.TestHost;
+using Microsoft.Extensions.DependencyInjection;
 
 namespace Elternbeirat.Web.Tests;
 
@@ -16,7 +18,7 @@ namespace Elternbeirat.Web.Tests;
 /// </para>
 /// </summary>
 [Collection(PocketBaseTestGroup.Name)]
-public sealed class RouteSmokeTests : IDisposable
+public sealed partial class RouteSmokeTests : IDisposable
 {
     // WithWebHostBuilder returns a new factory that wraps the base one; both are
     // disposable, so both are held and disposed to avoid leaking either.
@@ -29,10 +31,25 @@ public sealed class RouteSmokeTests : IDisposable
         // the value from appsettings. UseSetting (not ConfigureAppConfiguration)
         // because it wins over appsettings.Development.json, which otherwise pins the
         // client to localhost:8090 while the test container uses a random port.
-        _factory = _baseFactory.WithWebHostBuilder(builder =>
-            builder.UseSetting("PocketBase:BaseUrl", pocketBase.BaseUrl.ToString()));
+        _factory = WithClock(
+            _baseFactory.WithWebHostBuilder(builder =>
+                builder.UseSetting("PocketBase:BaseUrl", pocketBase.BaseUrl.ToString())),
+            BeforeFixtureEvents);
     }
 
+    /// <summary>
+    /// "Now" for the default factory: a week before the fixture's first event, so
+    /// "upcoming" stays true no matter when the tests run.
+    /// </summary>
+    private static readonly DateTimeOffset BeforeFixtureEvents = new(2026, 10, 1, 10, 0, 0, TimeSpan.Zero);
+
+    /// <summary>
+    /// Wraps <paramref name="factory"/> so the app's clock shows <paramref name="now"/>.
+    /// </summary>
+    private static WebApplicationFactory<Program> WithClock(WebApplicationFactory<Program> factory, DateTimeOffset now) =>
+        factory.WithWebHostBuilder(builder =>
+            builder.ConfigureTestServices(services => services.AddSingleton<TimeProvider>(new FixedTimeProvider(now))));
+
     public void Dispose()
     {
         _factory.Dispose();
@@ -43,7 +60,16 @@ public sealed class RouteSmokeTests : IDisposable
     /// Every route that a visitor can reach through the navigation, the FAQ hub
     /// or the news section. The post slugs match the fixture's seed.
     /// </summary>
-    public static TheoryData<string> KnownRoutes =>
+    public static TheoryData<string> KnownRoutes => [.. Routes];
+
+    /// <summary>
+    /// The <see cref="KnownRoutes"/> that render an HTML page, i.e. all but the
+    /// calendar feed.
+    /// </summary>
+    public static TheoryData<string> PageRoutes =>
+        [.. Routes.Where(route => !route.EndsWith(".ics", StringComparison.Ordinal))];
+
+    private static readonly string[] Routes =
     [
         "/",
         "/board",
@@ -75,6 +101,7 @@ public sealed class RouteSmokeTests : IDisposable
     [Theory]
     [InlineData("/gibt-es-nicht")]
     [InlineData("/posts/gibt-es-nicht")]
+    [InlineData("/events/gibt-es-nicht.ics")]
     public async Task Unknown_route_returns_404(string route)
     {
         var client = _factory.CreateClient();
@@ -85,18 +112,19 @@ public sealed class RouteSmokeTests : IDisposable
     }
 
     [Fact]
-    public async Task Faqs_route_renders_the_grouped_list()
+    public async Task Faqs_route_renders_the_topic_accordion()
     {
         // /faqs is a literal route (FaqList) that must win over the /{Slug}
-        // catch-all content page. Assert it shows the FAQ list, grouped by topic
-        // from the seeded questions, not a content page body.
+        // catch-all content page. It reads the "faqs" page for heading and intro
+        // and renders each topic as a collapsible group with its questions nested
+        // inside, so both the topic headings and the questions are in the markup.
         var client = _factory.CreateClient();
 
         var html = await client.GetStringAsync(new Uri("/faqs", UriKind.Relative));
 
-        html.ShouldContain("Häufige Fragen");
-        html.ShouldContain("Wann gibt es Mittagessen?");
-        html.ShouldContain("Mensa und Mittagessen"); // German topic heading
+        html.ShouldContain("FAQs"); // heading from the page title
+        html.ShouldContain("Mensa und Mittagessen"); // German topic heading (a group)
+        html.ShouldContain("Wann gibt es Mittagessen?"); // a question nested in the group
     }
 
     [Fact]
@@ -114,6 +142,30 @@ public sealed class RouteSmokeTests : IDisposable
         html.ShouldNotContain("href=\"/draft\""); // public=false, filtered out
     }
 
+    [Fact]
+    public async Task Footer_links_every_public_header_and_footer_page_in_order()
+    {
+        // The footer repeats the header pages as "Schnellzugriff" and then lists the
+        // footer pages, each column in its order field. Only the <footer> is checked,
+        // so the header menu cannot make the test pass on its own. The expected list
+        // mirrors the fixture's pages; the draft (public=false) must be missing.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        var footer = FooterElement().Match(html);
+        footer.Success.ShouldBeTrue();
+        var hrefs = Href().Matches(footer.Value).Select(match => match.Groups[1].Value);
+
+        hrefs.ShouldBe(
+        [
+            "/", "/board", "/patrons", "/faqs", "/downloads", "/posts", "/events",
+            "/contact", "/imprint", "/privacy", "/faq-lunch",
+        ]);
+        footer.Value.ShouldContain("Schnellzugriff");
+        footer.Value.ShouldContain("Weiteres");
+    }
+
     [Fact]
     public async Task Home_renders_the_embeds_its_page_opts_into()
     {
@@ -129,16 +181,460 @@ public sealed class RouteSmokeTests : IDisposable
     }
 
     [Fact]
-    public async Task Content_page_renders_the_embed_its_page_opts_into()
+    public async Task Content_page_renders_its_body()
     {
-        // /patrons is a catch-all content page whose embed field is ["faqs"], so it
-        // shows its body plus the FAQ teaser -- proving the ContentPage embed path.
+        // /patrons is a catch-all content page (the /{Slug} route). Assert it renders
+        // its Markdown body, proving the ContentPage path works for an arbitrary slug.
         var client = _factory.CreateClient();
 
         var html = await client.GetStringAsync(new Uri("/patrons", UriKind.Relative));
 
-        html.ShouldContain("Förderverein"); // the page body
-        html.ShouldContain("Häufige Fragen"); // faqs embed heading
-        html.ShouldContain("Wann gibt es Mittagessen?"); // a seeded question
+        html.ShouldContain("Der Förderverein unterstützt die Schule."); // the page body, rendered from Markdown
     }
+
+    [Fact]
+    public async Task Content_page_body_carries_the_markdown_styles_and_blocks()
+    {
+        // The editor-content styles in app.css all hang off .markdown-body, and the
+        // design blocks off the class a ":::" container renders. Assert both reach
+        // the markup of a real page, so a renamed wrapper or a pipeline without
+        // custom containers fails here instead of silently unstyling the site.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/patrons", UriKind.Relative));
+
+        html.ShouldContain("class=\"markdown-body\"");
+        html.ShouldContain("<div class=\"kennzahlen\">");
+    }
+
+    [Fact]
+    public async Task Board_renders_team_block_as_person_cards()
+    {
+        // The board body in the fixture holds a "::: team gross" block with one card
+        // following the convention and a "::: team" block with one that does not.
+        // Assert the cards survive the whole path: PocketBase, page, Markdown, HTML.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/board", UriKind.Relative));
+
+        html.ShouldContain("<div class=\"team gross\">");
+        html.ShouldContain("<span class=\"team-avatar team-avatar-");
+        html.ShouldContain("aria-hidden=\"true\">JR</span>");
+        html.ShouldContain("<strong class=\"team-name\">Jenny Reger-Stilgenbauer</strong>");
+        html.ShouldContain("<span class=\"team-role\">Vorsitzende</span>");
+        html.ShouldContain("<span class=\"team-duty\">Schulkonferenz</span>");
+        html.ShouldContain("<span class=\"team-duty\">Mensarat</span>");
+        html.ShouldContain("<span class=\"team-note\">Mitglied im Gesamtelternbeirat.</span>");
+        html.ShouldContain("<li class=\"team-card team-card-plain\">Özlem Ünal, Beisitz</li>");
+        html.ShouldContain("<h2>Beisitz</h2>"); // the group headings stay normal headings
+    }
+
+    [Fact]
+    public async Task Posts_and_events_render_their_page_heading_and_body()
+    {
+        // /posts and /events are served by PostList and EventList, which -- like
+        // FaqList -- read their own "posts"/"events" page record for heading and
+        // intro instead of hard-coding them. Assert both the title (as the h1) and
+        // the body text from the fixture records reach the markup.
+        var client = _factory.CreateClient();
+
+        var posts = await client.GetStringAsync(new Uri("/posts", UriKind.Relative));
+        posts.ShouldContain("Beiträge"); // heading from the page title
+        posts.ShouldContain("Neuigkeiten aus dem Elternbeirat."); // the page body
+
+        var events = await client.GetStringAsync(new Uri("/events", UriKind.Relative));
+        events.ShouldContain("Termine"); // heading from the page title
+        events.ShouldContain("Sitzungen und Veranstaltungen auf einen Blick."); // the page body
+    }
+
+    [Theory]
+    [InlineData("/app.css")]
+    [InlineData("/")]
+    public async Task No_resource_is_loaded_from_a_foreign_host(string route)
+    {
+        // Privacy rule (docs/recht.md): nothing may make the visitor's browser contact
+        // a third-party host -- no Google Fonts, no CDN. Check the stylesheet and the
+        // rendered home page for anything that LOADS from an absolute URL (src,
+        // srcset, <link href>, CSS url() and @import). Plain <a href> links are left
+        // alone on purpose: an editor may link to another site, and a link loads
+        // nothing until the visitor clicks it.
+        var client = _factory.CreateClient();
+
+        var body = await client.GetStringAsync(new Uri(route, UriKind.Relative));
+
+        ForeignResource().Matches(body).Select(match => match.Value).ShouldBeEmpty();
+    }
+
+    [Fact]
+    public async Task Site_font_is_self_hosted()
+    {
+        // The @font-face must point at our own wwwroot with a relative URL, and the
+        // file must actually be served -- otherwise every visitor silently falls back
+        // to the system font.
+        var client = _factory.CreateClient();
+
+        var css = await client.GetStringAsync(new Uri("/app.css", UriKind.Relative));
+        css.ShouldContain("url(\"fonts/nunito-latin-wght.woff2\")");
+
+        var font = await client.GetAsync(new Uri("/fonts/nunito-latin-wght.woff2", UriKind.Relative));
+        font.StatusCode.ShouldBe(HttpStatusCode.OK);
+    }
+
+    [Fact]
+    public async Task Health_returns_200_when_PocketBase_is_reachable()
+    {
+        // The monitor's happy path: the app answers and PocketBase (the seeded
+        // fixture) is up, so /health is 200. This mostly guards the wiring -- that the
+        // endpoint exists and reaches the client -- since the fixture keeps PocketBase
+        // alive; the unreachable case is covered separately below.
+        var client = _factory.CreateClient();
+
+        var response = await client.GetAsync(new Uri("/health", UriKind.Relative));
+
+        response.StatusCode.ShouldBe(HttpStatusCode.OK);
+    }
+
+    [Fact]
+    public async Task Health_returns_503_when_PocketBase_is_unreachable()
+    {
+        // The case the monitor exists for: the app is up but PocketBase is not. Point a
+        // throwaway app at a dead address (nothing listens on port 1, so the probe is
+        // refused at once, no timeout wait) and assert /health reports 503 rather than
+        // claiming healthy.
+        await using var factory = _baseFactory.WithWebHostBuilder(builder =>
+            builder.UseSetting("PocketBase:BaseUrl", "http://localhost:1"));
+        var client = factory.CreateClient();
+
+        var response = await client.GetAsync(new Uri("/health", UriKind.Relative));
+
+        response.StatusCode.ShouldBe(HttpStatusCode.ServiceUnavailable);
+        (await response.Content.ReadAsStringAsync()).ShouldBe("PocketBase unreachable");
+    }
+
+    [Theory]
+    [InlineData("/")]
+    [InlineData("/board")]
+    [InlineData("/posts/new-board")]
+    public async Task Page_shows_maintenance_page_when_PocketBase_is_unreachable(string route)
+    {
+        // The maintenance gate: with PocketBase down, a page is not rendered half-empty
+        // but answered with the static maintenance.html, a 503 and a hint when to retry.
+        await using var factory = UnreachablePocketBase();
+        var client = factory.CreateClient();
+
+        var response = await client.GetAsync(new Uri(route, UriKind.Relative));
+
+        response.StatusCode.ShouldBe(HttpStatusCode.ServiceUnavailable);
+        response.Headers.RetryAfter.ShouldNotBeNull();
+        (await response.Content.ReadAsStringAsync()).ShouldContain("Die Seite ist gerade nicht erreichbar");
+    }
+
+    [Fact]
+    public async Task Calendar_feed_stays_an_empty_calendar_when_PocketBase_is_unreachable()
+    {
+        // Not a page, so the gate lets it through: subscribed calendar apps keep
+        // getting a valid (empty) calendar instead of an HTML page.
+        await using var factory = UnreachablePocketBase();
+        var client = factory.CreateClient();
+
+        var response = await client.GetAsync(new Uri("/events.ics", UriKind.Relative));
+
+        response.StatusCode.ShouldBe(HttpStatusCode.OK);
+        (await response.Content.ReadAsStringAsync()).ShouldContain("BEGIN:VCALENDAR");
+    }
+
+    [Fact]
+    public async Task Maintenance_page_and_its_font_stay_reachable_when_PocketBase_is_unreachable()
+    {
+        // Static files are not gated: the maintenance page loads its self-hosted font
+        // from /fonts while PocketBase is down.
+        await using var factory = UnreachablePocketBase();
+        var client = factory.CreateClient();
+
+        var page = await client.GetAsync(new Uri("/maintenance.html", UriKind.Relative));
+        var font = await client.GetAsync(new Uri("/fonts/nunito-latin-wght.woff2", UriKind.Relative));
+
+        page.StatusCode.ShouldBe(HttpStatusCode.OK);
+        font.StatusCode.ShouldBe(HttpStatusCode.OK);
+    }
+
+    /// <summary>
+    /// A throwaway app pointed at a dead address: nothing listens on port 1, so every
+    /// PocketBase call is refused at once, without a timeout wait.
+    /// </summary>
+    private WebApplicationFactory<Program> UnreachablePocketBase() =>
+        _baseFactory.WithWebHostBuilder(builder =>
+            builder.UseSetting("PocketBase:BaseUrl", "http://localhost:1"));
+
+    [Fact]
+    public async Task Home_hero_takes_title_and_buttons_from_the_body()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        html.ShouldContain(">Willkommen</h1>");
+        html.ShouldNotContain(">Elternbeirat der IGMH</h1>"); // the fallback title
+        html.ShouldContain("""<a class="btn btn-primary" href="/events">""");
+        html.ShouldContain("""<a class="btn btn-secondary" href="/contact">""");
+    }
+
+    [Fact]
+    public async Task Home_tiles_are_exactly_the_public_header_pages()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        var tiles = HomeTiles().Match(html);
+        tiles.Success.ShouldBeTrue();
+        Href().Matches(tiles.Value).Select(match => match.Groups[1].Value)
+            .ShouldBe(["/board", "/patrons", "/faqs", "/downloads", "/posts", "/events"]);
+    }
+
+    [Fact]
+    public async Task Home_shows_the_next_event_when_one_is_upcoming()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        html.ShouldContain("Nächster Termin");
+        html.ShouldContain("Elternbeiratssitzung");
+    }
+
+    [Fact]
+    public async Task Home_hides_the_next_event_when_none_is_upcoming()
+    {
+        // After the fixture's last event nothing is upcoming; the card must vanish
+        // instead of showing an empty frame.
+        await using var factory = WithClock(_factory, new DateTimeOffset(2027, 1, 1, 10, 0, 0, TimeSpan.Zero));
+        var client = factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        html.ShouldNotContain("Nächster Termin");
+    }
+
+    [Fact]
+    public async Task Event_cards_on_the_events_page_do_not_link_to_the_events_page()
+    {
+        // Events have no page of their own; a card linking to /events led the
+        // visitor back to where they already were. The navigation does link to
+        // /events, so only the card list is checked.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/events", UriKind.Relative));
+
+        var list = EventCards().Match(html);
+        list.Success.ShouldBeTrue();
+        Href().Matches(list.Value).Select(match => match.Groups[1].Value).ShouldAllBe(href => href.EndsWith(".ics", StringComparison.Ordinal));
+    }
+
+    [Fact]
+    public async Task Events_page_shows_its_intro_once_and_a_subscribe_button()
+    {
+        // The intro is the "events" page body; a hard-coded intro beside it used to
+        // say the same thing twice.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/events", UriKind.Relative));
+
+        Regex.Count(html, Regex.Escape("Sitzungen und Veranstaltungen auf einen Blick.")).ShouldBe(1);
+        html.ShouldContain("""<a class="btn btn-secondary" href="/events.ics">""");
+        html.ShouldContain("Kalender abonnieren");
+    }
+
+    [Fact]
+    public async Task Events_page_folds_past_events_away()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/events", UriKind.Relative));
+
+        var past = PastEvents().Match(html);
+        past.Success.ShouldBeTrue();
+        past.Value.ShouldContain("Vergangene Termine anzeigen (2)");
+        past.Value.ShouldContain("Infoabend Klasse 5");
+        past.Value.ShouldNotContain("Elternbeiratssitzung"); // upcoming, not past
+        past.Value.ShouldContain("""<h3 class="past-events-year">2026</h3>""");
+        past.Value.ShouldContain("10. September"); // day without weekday or year
+        past.Value.ShouldContain("19:00 Uhr");     // the time stays, after the title
+        past.Value.ShouldContain("20.–22. Juli");  // several days as a span
+        Regex.Count(past.Value, "Uhr").ShouldBe(1); // the all-day Projekttage get no time
+    }
+
+    [Fact]
+    public async Task Single_event_calendar_file_holds_exactly_that_event()
+    {
+        // The "In Kalender übernehmen" link of a card leads to a calendar with just
+        // that one event. Take the link from the page, as a visitor would.
+        var client = _factory.CreateClient();
+        var html = await client.GetStringAsync(new Uri("/events", UriKind.Relative));
+        var href = Href().Matches(EventCards().Match(html).Value)
+            .Select(match => match.Groups[1].Value)
+            .First();
+
+        var response = await client.GetAsync(new Uri(href, UriKind.Relative));
+
+        response.StatusCode.ShouldBe(HttpStatusCode.OK);
+        response.Content.Headers.ContentType?.MediaType.ShouldBe("text/calendar");
+        var ics = await response.Content.ReadAsStringAsync();
+        ics.ShouldStartWith("BEGIN:VCALENDAR");
+        Regex.Count(ics, "BEGIN:VEVENT").ShouldBe(1);
+        ics.ShouldContain("SUMMARY:Elternbeiratssitzung"); // the earliest upcoming card
+    }
+
+    [Fact]
+    public async Task Home_event_cards_link_to_the_events_page()
+    {
+        // On the home page the cards are a teaser and may lead to the full list.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        var list = EventCards().Match(html);
+        list.Success.ShouldBeTrue();
+        Href().Matches(list.Value).Select(match => match.Groups[1].Value).ShouldAllBe(href => href == "/events");
+        html.ShouldContain("class=\"calendar-sheet\"");
+    }
+
+    [Fact]
+    public async Task Home_next_event_shows_the_time_and_keeps_the_full_date_for_screen_readers()
+    {
+        // The calendar sheet already shows the day, so the written-out date is only
+        // for screen readers; visible beside the sheet is the time. The meeting is
+        // 19:30 Berlin on Thursday, 8 October 2026 (fixture, test clock 1 October).
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        var card = NextEventCard().Match(html);
+        card.Success.ShouldBeTrue();
+        var hidden = VisuallyHidden().Match(card.Value);
+        hidden.Value.ShouldContain("Donnerstag, 8. Oktober 2026, 19:30 Uhr");
+        var visible = card.Value.Replace(hidden.Value, "", StringComparison.Ordinal);
+        visible.ShouldContain("19:30 Uhr");
+        visible.ShouldNotContain("Oktober 2026");
+    }
+
+    [Fact]
+    public async Task Post_page_has_the_title_as_its_only_h1()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/posts/new-board", UriKind.Relative));
+
+        Regex.Count(html, "<h1[ >]").ShouldBe(1);
+        html.ShouldContain(">Neuer Vorstand</h1>");
+    }
+
+    [Fact]
+    public async Task Newest_post_links_only_to_the_older_one()
+    {
+        // The fixture has two posts: new-board (newer) and new-hall (older).
+        // "Vorheriger Beitrag" is the older post, so the newest post has no "next".
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/posts/new-board", UriKind.Relative));
+
+        html.ShouldContain("href=\"/posts/new-hall\" rel=\"prev\"");
+        html.ShouldNotContain("rel=\"next\"");
+    }
+
+    [Fact]
+    public async Task Oldest_post_links_only_to_the_newer_one()
+    {
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/posts/new-hall", UriKind.Relative));
+
+        html.ShouldContain("href=\"/posts/new-board\" rel=\"next\"");
+        html.ShouldNotContain("rel=\"prev\"");
+    }
+
+    [Theory]
+    [MemberData(nameof(PageRoutes))]
+    public async Task Every_page_starts_with_a_skip_link_to_its_own_content(string route)
+    {
+        // The skip link must carry the page's own path: with <base href="/"> a bare
+        // "#main" would lead back to the home page. It must also bypass Blazor's
+        // enhanced navigation, which scrolls but does not move the focus.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri(route, UriKind.Relative));
+
+        html.ShouldContain($"""<a class="skip-link" href="{route}#main" data-enhance-nav="false" """);
+        html.ShouldContain("Zum Inhalt springen</a>");
+        html.ShouldContain("""<main id="main" """);
+    }
+
+    [Fact]
+    public async Task Menu_toggle_is_a_named_checkbox_tied_to_the_menu()
+    {
+        // The CSS-only hamburger: the checkbox is what keyboard and screen-reader
+        // users operate, so it needs a name and must point at the menu it opens.
+        var client = _factory.CreateClient();
+
+        var html = await client.GetStringAsync(new Uri("/", UriKind.Relative));
+
+        html.ShouldContain("aria-controls=\"main-nav\"");
+        html.ShouldContain("Hauptmenü anzeigen</span>");
+        html.ShouldContain("<nav id=\"main-nav\"");
+    }
+
+    /// <summary>
+    /// Matches a resource reference that points at an absolute URL, with or without
+    /// scheme (<c>https://</c>, <c>http://</c> or protocol-relative <c>//</c>): the
+    /// <c>src</c>/<c>srcset</c> attributes, a <c>&lt;link&gt;</c>'s <c>href</c>, CSS
+    /// <c>url()</c> and <c>@import</c>.
+    /// </summary>
+    [GeneratedRegex("""(?:\b(?:src|srcset)\s*=\s*|<link\b[^>]*\bhref\s*=\s*|url\(\s*|@import\s+)["']?\s*(?:https?:)?//""", RegexOptions.IgnoreCase)]
+    private static partial Regex ForeignResource();
+
+    /// <summary>
+    /// Matches the page's <c>&lt;footer&gt;</c> element, from its opening tag to the
+    /// closing one. The layout renders exactly one footer and nests no other.
+    /// </summary>
+    [GeneratedRegex("""<footer\b.*?</footer>""", RegexOptions.Singleline)]
+    private static partial Regex FooterElement();
+
+    /// <summary>
+    /// Matches an <c>href</c> attribute and captures its value.
+    /// </summary>
+    [GeneratedRegex(@"\bhref=""([^""]*)""")]
+    private static partial Regex Href();
+
+    /// <summary>
+    /// Matches the home page's tile section, from its opening tag to the closing
+    /// one. It nests no other <c>&lt;section&gt;</c>.
+    /// </summary>
+    [GeneratedRegex("""<section class="home-tiles".*?</section>""", RegexOptions.Singleline)]
+    private static partial Regex HomeTiles();
+
+    /// <summary>
+    /// Matches the "Nächster Termin" card in the home hero. It holds no other link,
+    /// so the first closing <c>&lt;/a&gt;</c> ends it.
+    /// </summary>
+    [GeneratedRegex("""<a class="next-event".*?</a>""", RegexOptions.Singleline)]
+    private static partial Regex NextEventCard();
+
+    /// <summary>
+    /// Matches the first text hidden for sighted visitors but read by screen readers.
+    /// </summary>
+    [GeneratedRegex("""<span class="visually-hidden".*?</span>""", RegexOptions.Singleline)]
+    private static partial Regex VisuallyHidden();
+
+    /// <summary>
+    /// Matches the first list of event cards, from its opening tag to the closing one.
+    /// The cards nest no other <c>&lt;ul&gt;</c>.
+    /// </summary>
+    [GeneratedRegex("""<ul class="event-list".*?</ul>""", RegexOptions.Singleline)]
+    private static partial Regex EventCards();
+
+    /// <summary>
+    /// Matches the folded-up past events on the events page.
+    /// </summary>
+    [GeneratedRegex("""<details class="past-events[ "].*?</details>""", RegexOptions.Singleline)]
+    private static partial Regex PastEvents();
 }

Elternbeirat.Web.Tests/TeamMemberTests.cs

@@ -0,0 +1,176 @@
+using Elternbeirat.Web.Shared;
+using Markdig.Syntax;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the person cards of the "::: team" block: initials, avatar colour,
+/// reading the list-item convention and the rendered card. Pure logic, no PocketBase
+/// needed.
+/// </summary>
+public class TeamMemberTests
+{
+    [Theory]
+    [InlineData("Jenny Reger-Stilgenbauer", "JR")] // a double name is one word
+    [InlineData("Özlem Ünal", "ÖÜ")]              // umlauts kept, not folded to O/U
+    [InlineData("ömer şahin", "ÖŞ")]              // lower case is raised
+    [InlineData("Isabell", "I")]                   // a single word gives one letter
+    [InlineData("Anna Maria Müller", "AM")]        // first and last word only
+    [InlineData("  Maik   Palm ", "MP")]           // extra whitespace ignored
+    [InlineData("", "")]
+    [InlineData("123", "")]                        // no letter, no initials
+    public void Initials_are_first_and_last_word(string name, string expected) =>
+        TeamMember.InitialsOf(name).ShouldBe(expected);
+
+    [Fact]
+    public void Color_is_stable_and_in_range()
+    {
+        // Pinned values: the colour must not change between restarts or releases, so a
+        // change to the hash shows up here instead of recolouring the board.
+        TeamMember.ColorOf("Maik Palm").ShouldBe(TeamMember.ColorOf(" Maik Palm "));
+        TeamMember.ColorOf("Maik Palm").ShouldBe(2);
+        TeamMember.ColorOf("Gentiana Erol").ShouldBe(2);
+        TeamMember.ColorOf("Raul Chira").ShouldBe(1);
+
+        new[] { "Maik Palm", "Gentiana Erol", "Raul Chira", "Marion Leininger", "Isabell Vesper", "" }
+            .ShouldAllBe(name => TeamMember.ColorOf(name) >= 1 && TeamMember.ColorOf(name) <= TeamMember.ColorCount);
+    }
+
+    [Fact]
+    public void Board_uses_both_colours_about_evenly()
+    {
+        // Two colours only make sense if both show up; the real board (ten names)
+        // must not land mostly on one.
+        string[] board =
+        [
+            "Maik Palm", "Gentiana Erol", "Raul Chira", "Marion Leininger", "Jenny Reger-Stilgenbauer",
+            "Mariella Ianello", "Isabell Vesper", "Susanne Naumburg", "Rebecca Goldmann", "Michael Weber",
+        ];
+
+        board.Count(name => TeamMember.ColorOf(name) == 1).ShouldBeInRange(4, 6);
+    }
+
+    [Fact]
+    public void Item_with_role_duties_and_note_is_read_in_full()
+    {
+        var (member, note) = Read("- **Maik Palm** (Vorsitzender)  \n  *Schulkonferenz, Mensarat , Homepage*  \n  Mitglied im Schulbeirat.");
+
+        member.Name.ShouldBe("Maik Palm");
+        member.Role.ShouldBe("Vorsitzender");
+        member.Duties.ShouldBe(["Schulkonferenz", "Mensarat", "Homepage"]);
+        Markdown.PlainText(note).ShouldBe("Mitglied im Schulbeirat.");
+    }
+
+    [Fact]
+    public void Item_without_role_still_reads_the_duties()
+    {
+        var (member, note) = Read("- **Jenny Reger-Stilgenbauer**  \n  *Schulkonferenz, Schaukasten*");
+
+        member.Role.ShouldBeNull();
+        member.Duties.ShouldBe(["Schulkonferenz", "Schaukasten"]);
+        note.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Item_with_only_a_name_has_no_role_and_no_duties()
+    {
+        var (member, note) = Read("- **Isabell Vesper**");
+
+        member.Name.ShouldBe("Isabell Vesper");
+        member.Role.ShouldBeNull();
+        member.Duties.ShouldBeEmpty();
+        note.ShouldBeEmpty();
+    }
+
+    [Fact]
+    public void Soft_line_breaks_count_like_hard_ones()
+    {
+        // Editors forget the two trailing spaces; the card must not depend on them.
+        var (member, _) = Read("- **Raul Chira** (2. Stellvertreter)\n  *Mensarat*");
+
+        member.Role.ShouldBe("2. Stellvertreter");
+        member.Duties.ShouldBe(["Mensarat"]);
+    }
+
+    [Fact]
+    public void Second_line_that_is_not_only_italic_becomes_the_note()
+    {
+        var (member, note) = Read("- **Rebecca Goldmann**  \n  Neu im Team, *herzlich willkommen*.");
+
+        member.Duties.ShouldBeEmpty();
+        Markdown.PlainText(note).ShouldBe("Neu im Team, herzlich willkommen.");
+    }
+
+    [Theory]
+    [InlineData("- Michael Weber, Beisitz")]        // no bold at all
+    [InlineData("- Beisitz: **Michael Weber**")]    // bold, but not at the start
+    [InlineData("- *Michael Weber*")]               // italic, not bold
+    public void Item_without_convention_is_not_read(string markdown) =>
+        TeamMember.Read(FirstParagraph(markdown)).ShouldBeNull();
+
+    [Fact]
+    public void Team_block_renders_person_cards()
+    {
+        var html = Markdown.ToHtml(
+            "::: team\n- **Maik Palm** (Vorsitzender)  \n  *Schulkonferenz, Mensarat*  \n  Siehe [Kontakt](/contact).\n:::");
+
+        html.ShouldContain("<div class=\"team\">");
+        html.ShouldContain($"<li class=\"{TeamMember.CardClass}\">");
+        html.ShouldContain("<span class=\"team-avatar team-avatar-2\" aria-hidden=\"true\">MP</span>");
+        html.ShouldContain("<strong class=\"team-name\">Maik Palm</strong>");
+        html.ShouldContain("<span class=\"team-role\">Vorsitzender</span>");
+        html.ShouldContain("<span class=\"team-duty\">Schulkonferenz</span>");
+        html.ShouldContain("<span class=\"team-duty\">Mensarat</span>");
+        html.ShouldContain("<span class=\"team-note\">Siehe <a href=\"/contact\">Kontakt</a>.</span>"); // links survive
+        html.ShouldNotContain("(Vorsitzender)");
+    }
+
+    [Fact]
+    public void Item_without_convention_renders_as_plain_card_with_its_text()
+    {
+        var html = Markdown.ToHtml("::: team\n- Michael Weber, Beisitz\n:::");
+
+        html.ShouldContain($"<li class=\"{TeamMember.CardClass} {TeamMember.PlainCardClass}\">Michael Weber, Beisitz</li>");
+        html.ShouldNotContain("team-avatar");
+    }
+
+    [Fact]
+    public void Editor_text_in_a_card_is_escaped()
+    {
+        var html = Markdown.ToHtml("::: team\n- **<b>Name</b>** (Rolle \"x\")\n:::");
+
+        html.ShouldNotContain("<b>");
+        html.ShouldContain("&lt;b&gt;Name&lt;/b&gt;");
+    }
+
+    [Theory]
+    [InlineData("::: team gross")]
+    [InlineData("::: team groß")]
+    [InlineData("::: team GROSS")]
+    public void Large_modifier_adds_its_class(string opening) =>
+        Markdown.ToHtml($"{opening}\n- **Maik Palm**\n:::").ShouldContain("<div class=\"team gross\">");
+
+    [Fact]
+    public void Mistyped_modifier_keeps_the_grid()
+    {
+        // A typo in the modifier costs the highlight, not the cards.
+        var html = Markdown.ToHtml("::: team grss\n- **Maik Palm**\n:::");
+
+        html.ShouldContain("<div class=\"team\">");
+        html.ShouldContain("team-card");
+    }
+
+    [Fact]
+    public void Lists_outside_a_team_block_are_untouched()
+    {
+        var html = Markdown.ToHtml("- **Maik Palm** (Vorsitzender)");
+
+        html.ShouldBe("<ul>\n<li><strong>Maik Palm</strong> (Vorsitzender)</li>\n</ul>\n");
+    }
+
+    private static (TeamMember Member, Markdig.Syntax.Inlines.Inline[] Note) Read(string markdown) =>
+        TeamMember.Read(FirstParagraph(markdown)) ?? throw new ShouldAssertException("The item was not read as a person.");
+
+    private static ParagraphBlock FirstParagraph(string markdown) =>
+        Markdown.Parse(markdown).Descendants<ParagraphBlock>().First();
+}

Elternbeirat.Web.Tests/TileIconsTests.cs

@@ -0,0 +1,37 @@
+using Elternbeirat.Web.Features.Home;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the slug-to-icon mapping of the home page tiles. Pure logic, no
+/// PocketBase needed.
+/// </summary>
+public class TileIconsTests
+{
+    [Theory]
+    [InlineData("board", "users")]
+    [InlineData("faqs", "help-circle")]
+    [InlineData("events", "calendar")]
+    public void Known_slug_gets_its_icon(string slug, string icon) =>
+        TileIcons.For(slug).ShouldBe(icon);
+
+    [Theory]
+    [InlineData("schulweg")] // a page an editor just created
+    [InlineData("Board")] // slugs are lowercase; anything else is unknown
+    [InlineData("")]
+    public void Unknown_slug_gets_the_default_icon(string slug) =>
+        TileIcons.For(slug).ShouldBe(TileIcons.Default);
+
+    [Theory]
+    [InlineData("board")]
+    [InlineData("patrons")]
+    [InlineData("faqs")]
+    [InlineData("downloads")]
+    [InlineData("posts")]
+    [InlineData("events")]
+    [InlineData("contact")]
+    [InlineData("unbekannt")] // the default
+    public void Every_icon_exists_in_the_icon_set(string slug) =>
+        IconSet.Find(TileIcons.For(slug)).ShouldNotBeNull(); // a typo would render no icon at all
+}

Elternbeirat.Web.Tests/UpcomingEventsTests.cs

@@ -0,0 +1,45 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Features.Events;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Tests;
+
+/// <summary>
+/// Unit tests for the "what is coming up?" rule and the Berlin day behind it. Pure
+/// logic, no PocketBase needed.
+/// </summary>
+public class UpcomingEventsTests
+{
+    private static Event Event(string title, DateTime start) =>
+        new() { Id = "test", Title = title, Start = start };
+
+    [Fact]
+    public void Keeps_today_and_later_ordered_by_start()
+    {
+        var events = new[]
+        {
+            Event("Basar", new DateTime(2026, 11, 22, 9, 0, 0)),
+            Event("Gestern", new DateTime(2026, 9, 30, 19, 30, 0)),
+            Event("Heute früh", new DateTime(2026, 10, 1, 7, 0, 0)), // already begun, still today
+            Event("Sitzung", new DateTime(2026, 10, 8, 19, 30, 0)),
+        };
+
+        var upcoming = UpcomingEvents.From(events, new DateOnly(2026, 10, 1));
+
+        upcoming.Select(@event => @event.Title).ShouldBe(["Heute früh", "Sitzung", "Basar"]);
+    }
+
+    [Fact]
+    public void Nothing_upcoming_gives_an_empty_list() =>
+        UpcomingEvents.From([Event("Vorbei", new DateTime(2026, 1, 1))], new DateOnly(2026, 10, 1))
+            .ShouldBeEmpty();
+
+    [Fact]
+    public void Berlin_day_starts_before_the_UTC_day()
+    {
+        // 22:30 UTC on 30 September is 00:30 on 1 October in Berlin (summer time).
+        var time = new FixedTimeProvider(new DateTimeOffset(2026, 9, 30, 22, 30, 0, TimeSpan.Zero));
+
+        BerlinClock.Today(time).ShouldBe(new DateOnly(2026, 10, 1));
+    }
+}

Elternbeirat.Web/Components/Layout/MainLayout.razor

@@ -1,10 +1,53 @@
 @inherits LayoutComponentBase
 
-<div class="page">
-    <header class="site-header">
+@* Header, main and footer are plain block children of <body>, which is the page's
+   scroll root. The header is position:sticky and, because it is NOT a flex/grid
+   child (a stretched flex item never sticks -- it fills its cell and unsticks
+   immediately), it pins to the top and stays there while the page scrolls. The
+   footer is kept at the bottom on short pages by a min-height on <main>, not by a
+   flex wrapper -- see MainLayout.razor.css. *@
+
+@* Skip link: the first stop for the Tab key, straight past the menu to the content.
+   The href carries the current path because of <base href="/"> in App.razor: a
+   bare "#main" would resolve to "/#main" and lead every subpage back home.
+   data-enhance-nav="false" leaves the jump to the browser: blazor.web.js would
+   otherwise take the click, only scroll to <main> and keep the focus on the link,
+   so the next Tab would land in the header menu again. *@
+<a class="skip-link" href="@SkipLinkHref" data-enhance-nav="false">Zum Inhalt springen</a>
+
+<header class="site-header">
         <div class="header-inner">
-            <a class="brand" href="/">Elternbeirat IGMH</a>
-            <nav class="main-nav">
+            @* Two-line lettering next to the signet: the body's name large, the
+               school small below it. One link, so the whole mark leads home. *@
+            <a class="brand" href="/">
+                <Signet />
+                <span class="brand-text">
+                    <span class="brand-name">Elternbeirat</span>
+                    <span class="brand-school">IGMH Mannheim</span>
+                </span>
+            </a>
+
+            @* CSS-only mobile menu: the checkbox holds the open/closed state, the
+               label is the hamburger button, and :checked reveals the nav below (see
+               MainLayout.razor.css). No JavaScript, no @@rendermode -- works under
+               static SSR. The checkbox is only visually hidden on a phone, not
+               removed, so it is what keyboard and screen-reader users operate: Tab
+               reaches it, Space toggles it, and its checked state is the menu's
+               open/closed state, announced as such ("Hauptmenü anzeigen,
+               Kontrollkästchen, aktiviert"). Its name is the label's hidden text;
+               aria-controls ties it to the menu it opens. aria-expanded would need
+               JavaScript to keep it in sync, the native checked state does not. *@
+            <input type="checkbox" id="nav-toggle" class="nav-toggle visually-hidden" aria-controls="main-nav" />
+            <label for="nav-toggle" class="nav-toggle-label">
+                <span class="nav-toggle-bar"></span>
+                <span class="visually-hidden">Hauptmenü anzeigen</span>
+            </label>
+
+            <nav id="main-nav" class="main-nav" aria-label="Hauptmenü">
+                @* The home link comes from PocketBase like every other entry (the
+                   "home" page carries location "header"), so it is rendered by the
+                   loop below -- no separate hard-coded home link, which would show
+                   up twice next to the PocketBase one. *@
                 @foreach (var link in _header)
                 {
                     <NavLink href="@link.Href" Match="@(link.Href == "/" ? NavLinkMatch.All : NavLinkMatch.Prefix)">@link.Title</NavLink>
@@ -13,19 +56,55 @@
         </div>
     </header>
 
-    <main class="content">
+    @* The skip link's target. tabindex="-1" makes it focusable by the link alone
+       (not by Tab), so after the jump the next Tab continues inside the content. *@
+    <main id="main" class="content" tabindex="-1">
         @Body
     </main>
 
     <footer class="site-footer">
+        @* A soft wave as the transition from the page into the dark footer. Pure
+           decoration, so hidden from screen readers; it is filled with the footer
+           colour and stretched to the full width (preserveAspectRatio="none"). *@
+        <svg class="footer-wave" viewBox="0 0 1440 48" preserveAspectRatio="none" aria-hidden="true" focusable="false">
+            <path d="M0 24C240 48 480 48 720 28S1200 0 1440 20V48H0z" />
+        </svg>
+
         <div class="footer-inner">
-            <span>Elternbeirat der IGMH</span>
-            <nav class="footer-nav">
-                @foreach (var link in _footer)
-                {
-                    <a href="@link.Href">@link.Title</a>
-                }
-            </nav>
+            <div class="footer-brand">
+                <Signet />
+                <span>Elternbeirat der IGMH</span>
+            </div>
+
+            @* Both link columns come from PocketBase like the header. An empty list
+               (no such pages, or PocketBase down) renders nothing -- no lone
+               heading above an empty column. *@
+            @if (_header.Count > 0)
+            {
+                <nav class="footer-nav" aria-label="Schnellzugriff">
+                    <h2 class="footer-heading">Schnellzugriff</h2>
+                    <ul>
+                        @foreach (var link in _header)
+                        {
+                            <li><a href="@link.Href">@link.Title</a></li>
+                        }
+                    </ul>
+                </nav>
+            }
+
+            @if (_footer.Count > 0)
+            {
+                <nav class="footer-nav" aria-label="Weiteres">
+                    <h2 class="footer-heading">Weiteres</h2>
+                    <ul>
+                        @foreach (var link in _footer)
+                        {
+                            <li><a href="@link.Href">@link.Title</a></li>
+                        }
+                    </ul>
+                </nav>
+            }
         </div>
+
+        <p class="footer-copyright">© @_year Elternbeirat der IGMH</p>
     </footer>
-</div>

Elternbeirat.Web/Components/Layout/MainLayout.razor.cs

@@ -6,31 +6,45 @@ namespace Elternbeirat.Web.Components.Layout;
 
 public partial class MainLayout
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load navigation pages from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Warning,
+        Message = "Could not load navigation pages from PocketBase; the menu is empty.")]
+    private static partial void LogSourceUnavailable(ILogger logger, Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<MainLayout> Logger { get; set; } = default!;
+    private ILogger<MainLayout> Logger { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
 
     private IReadOnlyList<NavLinkItem> _header = [];
     private IReadOnlyList<NavLinkItem> _footer = [];
 
+    // The skip link's target on this very page: path and query of the request plus
+    // the fragment. See the comment on the skip link in the markup for why it cannot
+    // be a bare "#main".
+    private string SkipLinkHref =>
+        $"{HttpContext?.Request.PathBase}{HttpContext?.Request.Path}{HttpContext?.Request.QueryString}#main";
+
+    // Berlin's year, not the server's (UTC) -- see FooterYear.
+    private readonly int _year = FooterYear.For(TimeProvider.System.GetUtcNow());
+
     protected override async Task OnInitializedAsync()
     {
         try
         {
-            var pages = await PocketBase.GetPagesAsync();
+            var pages = await PocketBase.GetPagesAsync(HttpContext?.RequestAborted ?? default);
             _header = NavBuilder.Header(pages);
             _footer = NavBuilder.Footer(pages);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException ex)
         {
-            // Source unreachable -> render the chrome with an empty menu instead of
-            // a 500. The brand link still leads home.
-            LogLoadFailed(Logger, ex);
+            // Only the menu fails: render the chrome with an empty menu instead of a
+            // 500, so every page stays reachable. The brand link still leads home.
+            LogSourceUnavailable(Logger, ex);
         }
     }
 }

Elternbeirat.Web/Components/Layout/MainLayout.razor.css

@@ -19,99 +19,317 @@
         top: 0.5rem;
     }
 
-/* Page frame: header and footer stay put, the content grows and pushes the
-   footer to the bottom even on short pages. */
-.page {
-    display: flex;
-    flex-direction: column;
-    min-height: 100vh;
-}
-
-/* Header */
+/* Header: pinned to the top while the page scrolls, so the brand and (on mobile)
+   the hamburger button are always reachable. It is a plain block child of <body>
+   (NOT a flex item) -- a stretched flex child fills its cell and never sticks.
+   z-index keeps it above the content; the opaque background stops content showing
+   through as it scrolls underneath. */
 .site-header {
-    border-bottom: 1px solid #e0e0e0;
-    background: #fff;
+    /* The brand gradient, blue into green -- the strongest, most visible cue that
+       carries the school's colours across every page. Built on --color-header, so
+       it stays deep in dark mode too (see app.css). No accent underline any more:
+       the gradient already ends in green, and the active menu item carries the
+       green stroke. */
+    background: var(--gradient-brand);
+    box-shadow: var(--shadow);
+    position: sticky;
+    top: 0;
+    z-index: 20;
 }
 
 .header-inner {
-    max-width: 60rem;
+    max-width: var(--content-width);
     margin: 0 auto;
-    padding: 1rem 1.25rem;
+    padding: var(--space-3) 1.25rem;
     display: flex;
     flex-wrap: wrap;
-    align-items: baseline;
-    gap: 0.5rem 1.5rem;
+    align-items: center;
+    gap: var(--space-2) var(--space-4);
 }
 
+/* Signet and two-line lettering side by side. The lettering is a column of its
+   own, so the name and the school line up on the left edge. */
 .brand {
-    font-size: 1.35rem;
-    font-weight: 700;
-    color: #1f3a5f;
+    display: flex;
+    align-items: center;
+    gap: var(--space-2);
+    color: var(--color-on-header);
     text-decoration: none;
     white-space: nowrap;
 }
 
+.brand:hover {
+    color: var(--color-on-header);
+}
+
+/* On the blue gradient the global brand-blue focus ring would vanish; white
+   stays visible on both ends of it. */
+.brand:focus-visible {
+    outline-color: var(--color-focus-inverse);
+}
+
+/* The signet lives in its own component (Signet.razor), so its <svg> carries that
+   component's scope attribute, not this one's; ::deep reaches it from here. */
+.brand ::deep .signet {
+    flex-shrink: 0;
+    width: 2.5rem;
+    height: 2.5rem;
+}
+
+.brand-text {
+    display: flex;
+    flex-direction: column;
+    line-height: 1.15;
+}
+
+.brand-name {
+    font-size: 1.35rem;
+    font-weight: var(--font-weight-heading);
+    letter-spacing: var(--letter-spacing-heading);
+}
+
+.brand-school {
+    font-size: 0.85rem;
+    font-weight: 600;
+}
+
+/* The links are pills with their own padding (see app.css), so the gap between
+   them can stay small. */
 .main-nav {
     display: flex;
     flex-wrap: wrap;
-    gap: 0.25rem 1.25rem;
+    align-items: center;
+    gap: var(--space-1) var(--space-2);
 }
 
-.main-nav a {
-    color: #333;
-    text-decoration: none;
-    padding: 0.2rem 0;
-    border-bottom: 2px solid transparent;
+/* The hamburger button and its state checkbox are hidden on wide screens; the
+   media query below turns them on for narrow ones. display:none (beating the
+   global .visually-hidden the checkbox also carries) takes the checkbox out of the
+   tab order here, where there is no menu to open. */
+.nav-toggle,
+.nav-toggle-label {
+    display: none;
 }
 
-.main-nav a:hover {
-    color: #1f3a5f;
-}
+/* The link colours/states for .main-nav a live in the GLOBAL app.css, not here.
+   Reason: NavLink renders plain <a> elements that carry no scoped-CSS attribute
+   (b-xxxxx), so a scoped rule ".main-nav a" would not match them. See app.css. */
 
-/* NavLink adds .active to the link of the current route. */
-.main-nav a.active {
-    color: #1f3a5f;
-    border-bottom-color: #1f3a5f;
-}
-
-/* Content */
+/* Content: at least tall enough that the footer sits at the bottom of the viewport
+   on short pages. 100dvh - 5rem leaves room for the header with its signet (which
+   sits above in normal flow); dvh follows the mobile browser's shrinking toolbar.
+   On long pages the content simply grows past this and pushes the footer down
+   naturally. */
 .content {
-    flex: 1;
+    min-height: calc(100dvh - 5rem);
+    box-sizing: border-box;
     width: 100%;
-    max-width: 60rem;
+    max-width: var(--content-width);
     margin: 0 auto;
-    padding: 1.5rem 1.25rem 3rem;
+    padding: var(--space-4) 1.25rem var(--space-6);
 }
 
-/* Footer */
+/* Footer: a dark brand-blue band with light text, so the page visibly ends here.
+   Its own tokens (--color-footer, --color-on-footer...) keep it dark in both
+   colour schemes, like the header. position:relative anchors the wave. */
 .site-footer {
-    border-top: 1px solid #e0e0e0;
-    background: #fafafa;
-    color: #555;
-    font-size: 0.9rem;
+    position: relative;
+    margin-top: var(--space-6);
+    background: var(--color-footer);
+    color: var(--color-on-footer-soft);
+    font-size: 0.95rem;
 }
 
+/* The wave sits just above the footer's top edge (bottom: 100%), drawn over the
+   page background in the footer colour, so the band seems to rise softly instead
+   of starting with a hard line. Fixed height, full width: on a phone it simply
+   flattens out. Overlapped by 1px so no hairline gap shows between wave and band
+   when the browser rounds. */
+.footer-wave {
+    position: absolute;
+    bottom: calc(100% - 1px);
+    left: 0;
+    display: block;
+    width: 100%;
+    height: 2.5rem;
+    fill: var(--color-footer);
+}
+
+/* Three columns: brand, quick links, further pages. The brand gets a bit more room
+   because it holds the signet. A missing link column simply leaves its cell empty,
+   so the others keep their place. */
 .footer-inner {
-    max-width: 60rem;
+    max-width: var(--content-width);
     margin: 0 auto;
-    padding: 1rem 1.25rem;
-    display: flex;
-    flex-wrap: wrap;
-    justify-content: space-between;
-    gap: 0.5rem 1.5rem;
+    padding: var(--space-5) 1.25rem var(--space-4);
+    display: grid;
+    grid-template-columns: 1.5fr 1fr 1fr;
+    gap: var(--space-4);
 }
 
-.footer-nav {
+.footer-brand {
     display: flex;
-    gap: 1.25rem;
+    align-items: center;
+    align-self: start;
+    gap: var(--space-2);
+    color: var(--color-on-footer);
+    font-weight: 700;
+}
+
+.footer-brand ::deep .signet {
+    flex-shrink: 0;
+    width: 3rem;
+    height: 3rem;
+}
+
+/* Column headings label the lists; they are not a second page heading, so they
+   stay small and quiet. */
+.footer-heading {
+    margin: 0 0 var(--space-2);
+    color: var(--color-on-footer);
+    font-size: 0.8rem;
+    font-weight: 700;
+    letter-spacing: 0.08em;
+    text-transform: uppercase;
+}
+
+.footer-nav ul {
+    list-style: none;
+    margin: 0;
+    padding: 0;
+}
+
+.footer-nav li + li {
+    margin-top: var(--space-1);
 }
 
 .footer-nav a {
-    color: #555;
+    color: var(--color-on-footer-soft);
     text-decoration: none;
 }
 
 .footer-nav a:hover {
-    color: #1f3a5f;
+    color: var(--color-on-footer);
     text-decoration: underline;
 }
+
+/* Same reason as the brand link in the header: a light ring on the dark band. */
+.footer-nav a:focus-visible {
+    outline-color: var(--color-focus-inverse);
+}
+
+/* Copyright: a thin rule separates it from the columns. The rule spans the content
+   width, not the whole window, so it lines up with the columns above. */
+.footer-copyright {
+    box-sizing: border-box;
+    max-width: var(--content-width);
+    margin: 0 auto;
+    padding: var(--space-3) 1.25rem;
+    border-top: 1px solid var(--color-footer-border);
+    font-size: 0.85rem;
+}
+
+/* Mobile: on narrow screens the nav collapses behind a hamburger button. This is
+   pure CSS -- the #nav-toggle checkbox holds the open/closed state and its
+   :checked state reveals the nav. No JavaScript, so it works under static SSR. */
+@media (max-width: 40rem) {
+    /* The brand stays on the left, the hamburger goes to the right, and the nav
+       occupies its own full-width row below both. */
+    .header-inner {
+        flex-wrap: wrap;
+        align-items: center;
+        justify-content: space-between;
+    }
+
+    /* The checkbox comes back as a real, focusable control -- only visually hidden
+       (global .visually-hidden), so Tab stops on it and Space toggles the menu. It
+       lives under the label, so the focus ring is drawn there instead. */
+    .nav-toggle {
+        display: block;
+    }
+
+    .nav-toggle:focus-visible + .nav-toggle-label {
+        outline: 3px solid var(--color-focus-inverse);
+        outline-offset: 2px;
+        border-radius: var(--radius);
+    }
+
+    /* Show the hamburger button. */
+    .nav-toggle-label {
+        display: block;
+        cursor: pointer;
+        padding: 0.5rem;
+        margin: -0.5rem;   /* keep the tap target large without shifting layout */
+    }
+
+    /* The three-bar icon, drawn with one element plus its ::before/::after. */
+    .nav-toggle-bar,
+    .nav-toggle-bar::before,
+    .nav-toggle-bar::after {
+        display: block;
+        width: 1.5rem;
+        height: 2px;
+        background: var(--color-on-header);
+        content: "";
+        transition: transform var(--transition), background-color var(--transition);
+    }
+
+    .nav-toggle-bar::before {
+        transform: translateY(-6px);
+    }
+
+    .nav-toggle-bar::after {
+        transform: translateY(4px);   /* 6px minus the bar's own 2px height */
+    }
+
+    /* Open: the hamburger turns into an X. The middle bar fades out and the outer
+       two meet in the middle and cross. Only the icon changes shape; nothing around
+       it moves. The checkbox sits right before the label, hence the + combinator. */
+    .nav-toggle:checked + .nav-toggle-label .nav-toggle-bar {
+        background-color: transparent;
+    }
+
+    .nav-toggle:checked + .nav-toggle-label .nav-toggle-bar::before {
+        transform: rotate(45deg);
+    }
+
+    .nav-toggle:checked + .nav-toggle-label .nav-toggle-bar::after {
+        transform: translateY(-2px) rotate(-45deg);   /* back up by its own height */
+    }
+
+    /* The nav takes its own row and is hidden until the checkbox is checked.
+       max-height:0 alone would only hide it from the eye: its links would still
+       be Tab stops and still be read out. visibility:hidden takes them out of
+       both. Transitioning visibility delays the switch to hidden until the fold
+       has finished, so closing still animates. Opening uses the transition of the
+       :checked rule below, which leaves visibility out: the links must be Tab
+       stops the moment Space is pressed, not 0.2s later. */
+    .main-nav {
+        flex-basis: 100%;
+        flex-direction: column;
+        gap: 0;
+        max-height: 0;
+        overflow: hidden;
+        visibility: hidden;
+        transition: max-height 0.2s ease, visibility 0.2s;
+    }
+
+    /* Checked state: reveal the stacked links. The max-height caps the open menu
+       to the space below the sticky header; a longer list scrolls inside it
+       instead of running off the screen. */
+    .nav-toggle:checked ~ .main-nav {
+        visibility: visible;
+        transition: max-height 0.2s ease;
+        max-height: 70vh;
+        overflow-y: auto;
+        margin-top: 0.5rem;
+    }
+
+    /* Mobile per-link spacing for .main-nav a is in the global app.css too, for
+       the same scoped-attribute reason as above. */
+
+    /* The footer columns stack: one column, brand on top. */
+    .footer-inner {
+        grid-template-columns: 1fr;
+    }
+}

Elternbeirat.Web/Features/Embeds/EventsEmbed.razor

@@ -1,25 +1,14 @@
-<section class="embed embed-events">
-    <h2>Kommende Termine</h2>
-
-    @if (_upcoming.Count == 0)
-    {
-        <p>Zurzeit sind keine Termine geplant.</p>
-    }
-    else
-    {
+@using Elternbeirat.Web.Features.Events
+@if (_upcomingEvents.Count > 0)
+{
+    <section class="embed embed-events">
+        <h2>Kommende Termine</h2>
         <ul class="event-list">
-            @foreach (var ev in _upcoming)
+            @foreach (var ev in _upcomingEvents)
             {
-                <li>
-                    <time datetime="@ev.Start.ToString("s")">@EventFormat.Range(ev)</time>
-                    <span class="event-title">@ev.Title</span>
-                    @if (!string.IsNullOrWhiteSpace(ev.Location))
-                    {
-                        <span class="event-location">@ev.Location</span>
-                    }
-                </li>
+                @* A teaser: each card leads to the events page with the full list. *@
+                <li><EventCard Value="ev" Href="/events" /></li>
             }
         </ul>
-        <p><a href="/events">Alle Termine &rarr;</a></p>
-    }
-</section>
+    </section>
+}

Elternbeirat.Web/Features/Embeds/EventsEmbed.razor.cs

@@ -1,43 +1,54 @@
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
+using Elternbeirat.Web.Features.Events;
+using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
 
 namespace Elternbeirat.Web.Features.Embeds;
 
 public partial class EventsEmbed
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load events for an embed from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
+    // Number of upcoming events shown in the teaser; the full list is one link away.
+    private const int TeaserCount = 3;
+
+    [LoggerMessage(
+        Level = LogLevel.Warning,
+        Message = "Could not load events for an embed from PocketBase; the teaser is omitted.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<EventsEmbed> Logger { get; set; } = default!;
+    private ILogger<EventsEmbed> Logger { get; set; } = null!;
 
-    private IReadOnlyList<Event> _upcoming = [];
+    [Inject]
+    private TimeProvider Time { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    private IReadOnlyList<Event> _upcomingEvents = [];
 
     protected override async Task OnInitializedAsync()
     {
         IReadOnlyList<Event> events;
         try
         {
-            events = await PocketBase.GetEventsAsync();
+            events = await PocketBase.GetEventsAsync(HttpContext?.RequestAborted ?? CancellationToken.None);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> show no teaser instead of a 500.
-            LogLoadFailed(Logger, ex);
+            // Only part of the page fails: omit the teaser, keep the page (and its
+            // 200) intact. A missing teaser is degraded, not broken.
+            LogSourceUnavailable(Logger, exception);
             return;
         }
 
-        // Teaser: the three soonest upcoming events, earliest first. An event
-        // earlier today still counts as upcoming.
-        var today = DateOnly.FromDateTime(DateTime.Today);
-        _upcoming = events
-            .Where(e => DateOnly.FromDateTime(e.Start) >= today)
-            .OrderBy(e => e.Start)
-            .Take(3)
-            .ToList();
+        // Teaser: the soonest upcoming events, earliest first. An event earlier
+        // today still counts as upcoming.
+        _upcomingEvents = [.. UpcomingEvents.From(events, BerlinClock.Today(Time)).Take(TeaserCount)];
     }
 }

Elternbeirat.Web/Features/Embeds/EventsEmbed.razor.css

@@ -1,33 +1,5 @@
+/* The card is EventCard and the list grid lives in the global app.css, shared with
+   the full events page. Only the embed's spacing on the home page is specific here. */
 .embed-events {
-    margin-top: 2rem;
-}
-
-.event-list {
-    list-style: none;
-    padding: 0;
-}
-
-.event-list li {
-    padding: 0.75rem 0;
-    border-bottom: 1px solid #eee;
-}
-
-.event-list time {
-    display: block;
-    color: #777;
-    font-size: 0.85rem;
-}
-
-.event-title {
-    font-size: 1.1rem;
-    font-weight: 600;
-}
-
-.event-location::before {
-    content: " · ";
-    color: #777;
-}
-
-.event-location {
-    color: #555;
+    margin-top: var(--space-5);
 }

Elternbeirat.Web/Features/Embeds/FaqsEmbed.razor

@@ -1,21 +0,0 @@
-<section class="embed embed-faqs">
-    <h2>Häufige Fragen</h2>
-
-    @if (_faqs.Count == 0)
-    {
-        <p>Zurzeit gibt es keine Fragen.</p>
-    }
-    else
-    {
-        @foreach (var faq in _faqs)
-        {
-            <details class="faq-item">
-                <summary>@faq.Question</summary>
-                <div class="faq-answer">
-                    @((MarkupString)Markdown.ToHtml(faq.Answer))
-                </div>
-            </details>
-        }
-        <p><a href="/faqs">Alle Fragen &rarr;</a></p>
-    }
-</section>

Elternbeirat.Web/Features/Embeds/FaqsEmbed.razor.cs

@@ -1,34 +0,0 @@
-using Elternbeirat.Contracts;
-using Elternbeirat.PocketBase;
-using Microsoft.AspNetCore.Components;
-
-namespace Elternbeirat.Web.Features.Embeds;
-
-public partial class FaqsEmbed
-{
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load FAQs for an embed from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
-
-    [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
-
-    [Inject]
-    private ILogger<FaqsEmbed> Logger { get; set; } = default!;
-
-    private IReadOnlyList<Faq> _faqs = [];
-
-    protected override async Task OnInitializedAsync()
-    {
-        try
-        {
-            // Teaser: the first three questions, with a link to the full hub.
-            var faqs = await PocketBase.GetFaqsAsync();
-            _faqs = [.. faqs.Take(3)];
-        }
-        catch (HttpRequestException ex)
-        {
-            // Source unreachable -> show no teaser instead of a 500.
-            LogLoadFailed(Logger, ex);
-        }
-    }
-}

Elternbeirat.Web/Features/Embeds/FaqsEmbed.razor.css

@@ -1,18 +0,0 @@
-.embed-faqs {
-    margin-top: 2rem;
-}
-
-.faq-item {
-    border-bottom: 1px solid #eee;
-    padding: 0.5rem 0;
-}
-
-.faq-item summary {
-    cursor: pointer;
-    font-weight: 600;
-}
-
-.faq-answer {
-    padding: 0.5rem 0 0.25rem;
-    color: #333;
-}

Elternbeirat.Web/Features/Embeds/PageEmbeds.razor

@@ -12,14 +12,11 @@
         case "events":
             <EventsEmbed />
             break;
-        case "faqs":
-            <FaqsEmbed />
-            break;
     }
 }
 
 @code {
-    /// <summary>The page's embed keys ("posts", "events", "faqs"), in order.</summary>
+    /// <summary>The page's embed keys ("posts", "events"), in order.</summary>
     [Parameter]
     public IReadOnlyList<string> Embed { get; set; } = [];
 }

Elternbeirat.Web/Features/Embeds/PostsEmbed.razor

@@ -1,23 +1,13 @@
-<section class="embed embed-posts">
-    <h2>Aktuelle Beiträge</h2>
-
-    @if (_latest.Count == 0)
-    {
-        <p>Zurzeit gibt es keine Beiträge.</p>
-    }
-    else
-    {
+@using Elternbeirat.Web.Features.Posts
+@if (_latest.Count > 0)
+{
+    <section class="embed embed-posts">
+        <h2>Aktuelle Beiträge</h2>
         <ul class="post-list">
             @foreach (var post in _latest)
             {
-                <li>
-                    <a href="@($"/posts/{post.Slug}")">@post.Title</a>
-                    <time datetime="@post.Date.ToString("yyyy-MM-dd")">
-                        @post.Date.ToString("d. MMMM yyyy", German)
-                    </time>
-                </li>
+                <li><PostCard Value="post" /></li>
             }
         </ul>
-        <p><a href="/posts">Alle Beiträge &rarr;</a></p>
-    }
-</section>
+    </section>
+}

Elternbeirat.Web/Features/Embeds/PostsEmbed.razor.cs

@@ -1,4 +1,3 @@
-using System.Globalization;
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
 using Microsoft.AspNetCore.Components;
@@ -7,16 +6,24 @@ namespace Elternbeirat.Web.Features.Embeds;
 
 public partial class PostsEmbed
 {
-    private static readonly CultureInfo German = CultureInfo.GetCultureInfo("de-DE");
+    // Number of posts shown in the teaser; the full list is one link away.
+    private const int TeaserCount = 3;
 
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load posts for an embed from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Warning,
+        Message = "Could not load posts for an embed from PocketBase; the teaser is omitted.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<PostsEmbed> Logger { get; set; } = default!;
+    private ILogger<PostsEmbed> Logger { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
 
     private IReadOnlyList<Post> _latest = [];
 
@@ -24,14 +31,15 @@ public partial class PostsEmbed
     {
         try
         {
-            // Teaser: the three most recent posts, with a link to the full list.
-            var posts = await PocketBase.GetPostsAsync();
-            _latest = [.. posts.Take(3)];
+            // GetPostsAsync returns newest first, so the first entries are the latest.
+            var posts = await PocketBase.GetPostsAsync(HttpContext?.RequestAborted ?? CancellationToken.None);
+            _latest = [.. posts.Take(TeaserCount)];
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> show no teaser instead of a 500.
-            LogLoadFailed(Logger, ex);
+            // Only part of the page fails: omit the teaser, keep the page (and its
+            // 200) intact. A missing teaser is degraded, not broken.
+            LogSourceUnavailable(Logger, exception);
         }
     }
 }

Elternbeirat.Web/Features/Embeds/PostsEmbed.razor.css

@@ -1,24 +1,5 @@
+/* The card is PostCard and the list grid lives in the global app.css, shared with
+   the full posts page. Only the embed's spacing on the home page is specific here. */
 .embed-posts {
-    margin-top: 2rem;
-}
-
-.post-list {
-    list-style: none;
-    padding: 0;
-}
-
-.post-list li {
-    padding: 0.75rem 0;
-    border-bottom: 1px solid #eee;
-}
-
-.post-list a {
-    font-size: 1.1rem;
-    text-decoration: none;
-}
-
-.post-list time {
-    display: block;
-    color: #777;
-    font-size: 0.85rem;
+    margin-top: var(--space-5);
 }

Elternbeirat.Web/Features/Events/CalendarSheet.razor

@@ -0,0 +1,10 @@
+@*
+    A tear-off calendar sheet for an event's start: short month on a green band,
+    the day large, the weekday small. Pure decoration, hidden from screen readers:
+    every caller puts the full date (<EventDate>) next to it.
+*@
+<span class="calendar-sheet" aria-hidden="true">
+    <span class="calendar-month">@EventDateFormat.SheetMonth(Value)</span>
+    <span class="calendar-day">@EventDateFormat.SheetDay(Value)</span>
+    <span class="calendar-weekday">@EventDateFormat.SheetWeekday(Value)</span>
+</span>

Elternbeirat.Web/Features/Events/CalendarSheet.razor.cs

@@ -0,0 +1,22 @@
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Features.Events;
+
+/// <summary>
+///     Renders an event's start day as a calendar sheet (month, day, weekday).
+/// </summary>
+/// <remarks>
+///     One component for every place that shows an event (the next-event card on the
+///     home page, the events embed and the events page), so the sheets look the same
+///     everywhere. The texts come from <see cref="EventDateFormat"/>.
+/// </remarks>
+/// <seealso cref="EventCard"/>
+public partial class CalendarSheet
+{
+    /// <summary>
+    ///     The event's start, as Berlin wall-clock time.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public DateTime Value { get; set; }
+}

Elternbeirat.Web/Features/Events/CalendarSheet.razor.css

@@ -0,0 +1,41 @@
+/* The calendar sheet: a green band with the month over a large day number and the
+   weekday. Fixed width, so the sheets of a list line up whatever the month. The band
+   has its own token (--color-calendar-band): the plain green accent is too light for
+   small white text, the band's darker green keeps it above AA in both schemes.
+   Positioning (gap to the text beside it) is the caller's job. */
+.calendar-sheet {
+    flex-shrink: 0;
+    display: flex;
+    flex-direction: column;
+    width: 4rem;
+    overflow: hidden;
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius-sm);
+    background: var(--color-bg);
+    text-align: center;
+    line-height: 1.2;
+}
+
+.calendar-month {
+    padding: 0.15rem 0;
+    background: var(--color-calendar-band);
+    color: var(--color-on-button);
+    font-size: 0.8rem;
+    font-weight: 700;
+    letter-spacing: 0.05em;
+    text-transform: uppercase;
+}
+
+.calendar-day {
+    padding-top: var(--space-1);
+    color: var(--color-heading);
+    font-size: 1.75rem;
+    font-weight: var(--font-weight-heading);
+}
+
+.calendar-weekday {
+    padding-bottom: var(--space-1);
+    color: var(--color-text-soft);
+    font-size: 0.8rem;
+    font-weight: 600;
+}

Elternbeirat.Web/Features/Events/EventCard.razor

@@ -0,0 +1,43 @@
+@*
+    One event as a card: calendar sheet on the left, title, time, place and note on
+    the right. With an Href the whole card is that link (home embed); without one it
+    is a plain card (events page) and offers the event as a calendar file instead.
+*@
+@if (Href is null)
+{
+    <div class="event-card">@Details</div>
+}
+else
+{
+    <a class="event-card event-card-link" href="@Href">@Details</a>
+}
+
+@code {
+    // The card's content, the same in both forms. A template, not a child component,
+    // so the wrapper above stays the only difference between the two.
+    private RenderFragment Details => @<text>
+        <CalendarSheet Value="Value.Start" />
+        <span class="event-details">
+            <span class="event-title">@Value.Title</span>
+            @* The sheet is hidden from screen readers; this is the date they hear. *@
+            <span class="visually-hidden"><EventDate Value="Value" /></span>
+            @if (Span.Length > 0)
+            {
+                <span class="event-meta"><Icon Name="clock" Size="16" /> @Span</span>
+            }
+            @if (!string.IsNullOrWhiteSpace(Value.Location))
+            {
+                <span class="event-meta"><Icon Name="map-pin" Size="16" /> @Value.Location</span>
+            }
+            @if (!string.IsNullOrWhiteSpace(Value.Note))
+            {
+                <span class="event-note">@Value.Note</span>
+            }
+            @* A link inside a link is invalid HTML, so only the plain card offers it. *@
+            @if (Href is null)
+            {
+                <a class="event-ics" href="@IcsHref"><Icon Name="calendar-plus" Size="16" /> In Kalender übernehmen</a>
+            }
+        </span>
+    </text>;
+}

Elternbeirat.Web/Features/Events/EventCard.razor.cs

@@ -0,0 +1,55 @@
+using Elternbeirat.Contracts;
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Features.Events;
+
+/// <summary>
+///     Renders one event as a card with a calendar sheet, time, place and note.
+/// </summary>
+/// <remarks>
+///     Shared by the events page and the home-page events embed, so both show events
+///     the same way. They differ only in what the card leads to:
+///     <list type="bullet">
+///         <item>
+///             <description>
+///                 In the embed the whole card links to the events page
+///                 (<see cref="Href"/> set).
+///             </description>
+///         </item>
+///         <item>
+///             <description>
+///                 On the events page itself a link back to the same page would lead
+///                 nowhere, so the card is no link (<see cref="Href"/> is
+///                 <see langword="null"/>) and offers "In Kalender übernehmen" instead.
+///             </description>
+///         </item>
+///     </list>
+/// </remarks>
+/// <seealso cref="CalendarSheet"/>
+/// <seealso cref="IcsCalendar"/>
+public partial class EventCard
+{
+    /// <summary>
+    ///     The event to show.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public Event Value { get; set; } = null!;
+
+    /// <summary>
+    ///     Where the card links to, or <see langword="null"/> for a card that is no link
+    ///     and offers the event as a calendar file instead.
+    /// </summary>
+    [Parameter]
+    public string? Href { get; set; }
+
+    /// <summary>
+    ///     The time line beside the sheet; empty for a single all-day event.
+    /// </summary>
+    private string Span => EventDateFormat.Span(Value);
+
+    /// <summary>
+    ///     The address of this one event as a calendar file.
+    /// </summary>
+    private string IcsHref => $"/events/{Uri.EscapeDataString(Value.Id)}.ics";
+}

Elternbeirat.Web/Features/Events/EventCard.razor.css

@@ -0,0 +1,82 @@
+/* The event card: a white surface on the tinted page, sheet left, text right. The
+   card fills its list cell, so the cards of a row are equally tall. */
+.event-card {
+    box-sizing: border-box;
+    display: flex;
+    gap: var(--space-3);
+    align-items: flex-start;
+    height: 100%;
+    padding: var(--space-3) var(--space-4);
+    border: 1px solid transparent;
+    border-radius: var(--radius);
+    background: var(--color-bg);
+    box-shadow: var(--shadow);
+    color: var(--color-text);
+}
+
+/* Only the linked card reacts to hover: a card that leads nowhere must not look
+   clickable. Hover = stronger shadow and a blue edge, nothing moves. */
+.event-card-link {
+    text-decoration: none;
+    transition: box-shadow var(--transition), border-color var(--transition);
+}
+
+.event-card-link:hover {
+    border-color: var(--color-brand);
+    box-shadow: var(--shadow-hover);
+    color: var(--color-text);
+}
+
+.event-details {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-1);
+    min-width: 0;   /* lets a long title wrap instead of widening the card */
+}
+
+.event-title {
+    color: var(--color-brand);
+    font-size: 1.15rem;
+    font-weight: 700;
+    line-height: 1.3;
+}
+
+/* Time and place: icon and text on one quiet line each. The icon belongs to Icon's
+   own scope, so it is reached through ::deep. */
+.event-meta {
+    display: flex;
+    align-items: center;
+    gap: var(--space-1);
+    color: var(--color-text-soft);
+    font-size: 0.9rem;
+}
+
+.event-meta ::deep .icon {
+    color: var(--color-accent-dark);
+}
+
+.event-note {
+    margin-top: var(--space-1);
+    font-size: 0.95rem;
+}
+
+/* In the linked card (home embed) the note is only a teaser: cut after two lines,
+   so a long note does not stretch the card next to short ones. The full note is
+   on the events page. */
+.event-card-link .event-note {
+    display: -webkit-box;
+    -webkit-box-orient: vertical;
+    -webkit-line-clamp: 2;
+    line-clamp: 2;
+    overflow: hidden;
+}
+
+.event-ics {
+    display: inline-flex;
+    align-items: center;
+    gap: var(--space-1);
+    align-self: flex-start;
+    margin-top: var(--space-2);
+    font-size: 0.9rem;
+    font-weight: 600;
+}

Elternbeirat.Web/Features/Events/EventDate.razor

@@ -0,0 +1,10 @@
+@*
+    Renders an event's date as a <time> element: the start in the machine-readable
+    datetime attribute, the full German range (weekday, clock time, multi-day span)
+    as visible text via EventDateFormat.
+
+    Unlike <PostDate>, this takes the whole Event, not a plain day: the visible
+    range depends on the event's end and whether it has a clock time, and that
+    logic already lives in EventDateFormat.
+*@
+<time datetime="@Value.Start.ToString("s")">@EventDateFormat.Range(Value)</time>

Elternbeirat.Web/Features/Events/EventDate.razor.cs

@@ -0,0 +1,18 @@
+using Elternbeirat.Contracts;
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Features.Events;
+
+/// <summary>
+///     Renders an event's date range as a <c>&lt;time&gt;</c> element, in both a
+///     machine-readable and a visitor-facing form.
+/// </summary>
+public partial class EventDate
+{
+    /// <summary>
+    ///     The event whose date range to render.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public Event Value { get; set; } = null!;
+}

Elternbeirat.Web/Features/Events/EventDate.razor.css

@@ -0,0 +1,9 @@
+/* The date's own look: small and softened, matching <PostDate> so post and event
+   cards read as one style. Lives with the component so every place that renders
+   <EventDate> (list, home embed) shows the date the same way. Positioning (margin
+   to neighbours) is NOT set here -- that is the surrounding list's job. */
+time {
+    display: block;
+    color: var(--color-text-soft);   /* token, so it adapts in dark mode */
+    font-size: 0.85rem;
+}

Elternbeirat.Web/Features/Events/EventDateFormat.cs

@@ -0,0 +1,213 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Features.Events;
+
+/// <summary>
+///     Formats the date range of an <see cref="Event"/> for display in German.
+/// </summary>
+/// <remarks>
+///     Shared by the full event list, the home-page events embed and the next-event
+///     card, so all render dates the same way: <see cref="Range"/> as the full date,
+///     the <c>Sheet…</c> methods and <see cref="Span"/> for the calendar sheet and the
+///     time line beside it, <see cref="PastDays"/> and <see cref="PastTime"/> for the list of past events.
+///     <para>
+///         This is the event counterpart to
+///         <see cref="Posts.PostDateFormat"/>, which formats a plain
+///         <see cref="DateOnly"/> day instead of a point-in-time range.
+///     </para>
+/// </remarks>
+public static class EventDateFormat
+{
+    /// <summary>
+    ///     Date format for the start, and for a single-day event.
+    /// </summary>
+    private const string LongDate = "dddd, d. MMMM yyyy";
+
+    /// <summary>
+    ///     Date format for the end of a multi-day event; the weekday is omitted.
+    /// </summary>
+    private const string ShortDate = "d. MMMM yyyy";
+
+    /// <summary>
+    ///     Date format for the list of past events, which is grouped by year.
+    /// </summary>
+    private const string DayMonth = "d. MMMM";
+
+    /// <summary>
+    ///     Formats the date range of an event.
+    /// </summary>
+    /// <param name="event">
+    ///     The event to format.
+    /// </param>
+    /// <returns>
+    ///     The formatted range, depending on <see cref="Event.End"/> and <see cref="Event.HasTime"/>:
+    ///     <list type="bullet">
+    ///         <item>
+    ///             <description>No end: <c>Donnerstag, 8. Oktober 2026, 19:30 Uhr</c></description>
+    ///         </item>
+    ///         <item>
+    ///             <description>Same day: <c>Donnerstag, 8. Oktober 2026, 19:30–21:00 Uhr</c></description>
+    ///         </item>
+    ///         <item>
+    ///             <description>Several days: <c>Freitag, 9. Oktober 2026 – 11. Oktober 2026</c></description>
+    ///         </item>
+    ///     </list>
+    ///     Without a time, the time parts are omitted.
+    /// </returns>
+    public static string Range(Event @event)
+        => (@event.Start, @event.End, @event.HasTime) switch
+        {
+            (var start, null, var hasTime)
+                => Stamp(start, LongDate, hasTime),
+            (var start, { } end, true) when end.Date == start.Date
+                => $"{start.ToString(LongDate, Cultures.German)}, {Clock(start)}–{Clock(end)} Uhr",
+            (var start, { } end, false) when end.Date == start.Date
+                => Stamp(start, LongDate, withTime: false),
+            (var start, { } end, var hasTime)
+                => $"{Stamp(start, LongDate, hasTime)} – {Stamp(end, ShortDate, hasTime)}",
+        };
+
+    /// <summary>
+    ///     The short month for the top band of a calendar sheet.
+    /// </summary>
+    /// <param name="value">The event's start.</param>
+    /// <returns>The German short month without its period, e.g. <c>Okt</c> or <c>März</c>.</returns>
+    /// <remarks>
+    ///     Returned in normal case; the sheet's CSS sets it in capitals. The period of the
+    ///     abbreviation (<c>Okt.</c>) is dropped because on a sheet it reads as a stray dot.
+    /// </remarks>
+    /// <seealso cref="CalendarSheet"/>
+    public static string SheetMonth(DateTime value)
+        => value.ToString("MMM", Cultures.German).TrimEnd('.');
+
+    /// <summary>
+    ///     The day of the month for the large number on a calendar sheet.
+    /// </summary>
+    /// <param name="value">The event's start.</param>
+    /// <returns>The day without a leading zero, e.g. <c>8</c>.</returns>
+    public static string SheetDay(DateTime value)
+        => value.Day.ToString(Cultures.German);
+
+    /// <summary>
+    ///     The short weekday for the bottom of a calendar sheet.
+    /// </summary>
+    /// <param name="value">The event's start.</param>
+    /// <returns>The German short weekday without its period, e.g. <c>Do</c>.</returns>
+    public static string SheetWeekday(DateTime value)
+        => value.ToString("ddd", Cultures.German).TrimEnd('.');
+
+    /// <summary>
+    ///     The time line beside a calendar sheet: what the sheet itself cannot show.
+    /// </summary>
+    /// <param name="event">The event to format.</param>
+    /// <returns>
+    ///     Depending on <see cref="Event.End"/> and <see cref="Event.HasTime"/>:
+    ///     <list type="bullet">
+    ///         <item><description>No end: <c>19:30 Uhr</c></description></item>
+    ///         <item><description>Same day: <c>19:30–21:00 Uhr</c></description></item>
+    ///         <item><description>Several days: <c>09:00 Uhr bis Sonntag, 11. Oktober 2026, 13:00 Uhr</c></description></item>
+    ///         <item><description>Several days, no time: <c>bis Sonntag, 11. Oktober 2026</c></description></item>
+    ///         <item><description>One day, no time: an empty string; the sheet says it all.</description></item>
+    ///     </list>
+    /// </returns>
+    /// <remarks>
+    ///     The sheet shows the start day only, so a multi-day event must name its last
+    ///     day here, with the weekday, as the sheet does for the first one.
+    /// </remarks>
+    public static string Span(Event @event)
+        => (@event.Start, @event.End, @event.HasTime) switch
+        {
+            (var start, { } end, var hasTime) when end.Date != start.Date
+                => (hasTime ? Clock(start) + " Uhr " : "") + "bis " + Stamp(end, LongDate, hasTime),
+            (var start, null, true)
+                => $"{Clock(start)} Uhr",
+            (var start, { } end, true)
+                => $"{Clock(start)}–{Clock(end)} Uhr",
+            _ => "",
+        };
+
+    /// <summary>
+    ///     The day column of a past event in the folded-up list on the events page.
+    /// </summary>
+    /// <param name="event">The event to format.</param>
+    /// <returns>
+    ///     Day and full month, depending on <see cref="Event.End"/>:
+    ///     <list type="bullet">
+    ///         <item><description>One day: <c>13. November</c></description></item>
+    ///         <item><description>Several days in one month: <c>8.–9. Februar</c></description></item>
+    ///         <item><description>Across a month: <c>30. Januar – 2. Februar</c></description></item>
+    ///         <item><description>Across a year: <c>30. Dezember – 2. Januar 2027</c></description></item>
+    ///     </list>
+    /// </returns>
+    /// <remarks>
+    ///     The list is grouped by the start year under its own small heading, so the
+    ///     year is only named where the end leaves that year. The weekday is left out
+    ///     to keep the column short; the time follows the title (<see cref="PastTime"/>).
+    /// </remarks>
+    public static string PastDays(Event @event)
+        => (@event.Start, @event.End) switch
+        {
+            (var start, { } end) when end.Year != start.Year
+                => $"{start.ToString(DayMonth, Cultures.German)} – {end.ToString(ShortDate, Cultures.German)}",
+            (var start, { } end) when end.Month != start.Month
+                => $"{start.ToString(DayMonth, Cultures.German)} – {end.ToString(DayMonth, Cultures.German)}",
+            (var start, { } end) when end.Day != start.Day
+                => $"{start.Day.ToString(Cultures.German)}.–{end.ToString(DayMonth, Cultures.German)}",
+            (var start, _)
+                => start.ToString(DayMonth, Cultures.German),
+        };
+
+    /// <summary>
+    ///     The time after the title of a past event in the folded-up list.
+    /// </summary>
+    /// <param name="event">The event to format.</param>
+    /// <returns>
+    ///     Depending on <see cref="Event.HasTime"/> and <see cref="Event.End"/>:
+    ///     <list type="bullet">
+    ///         <item><description>No time: an empty string; nothing is shown.</description></item>
+    ///         <item><description>No end: <c>19:00 Uhr</c></description></item>
+    ///         <item><description>Same day: <c>19:00–21:00 Uhr</c></description></item>
+    ///         <item><description>Several days: the start time only, <c>09:00 Uhr</c></description></item>
+    ///     </list>
+    /// </returns>
+    /// <remarks>
+    ///     For several days the day column already shows the span; a time range beside
+    ///     it would read as the daily hours, so only the start time is given.
+    /// </remarks>
+    public static string PastTime(Event @event)
+        => (@event.HasTime, @event.End) switch
+        {
+            (false, _) => "",
+            (true, { } end) when end.Date != @event.Start.Date => $"{Clock(@event.Start)} Uhr",
+            _ => Span(@event),
+        };
+
+    /// <summary>
+    ///     Formats the clock time of a point in time.
+    /// </summary>
+    /// <param name="value">The date and time.</param>
+    /// <returns>The time as e.g. <c>19:30</c>.</returns>
+    private static string Clock(DateTime value)
+        => value.ToString("HH:mm", Cultures.German);
+
+    /// <summary>
+    ///     Formats a single point in time as a date with an optional time.
+    /// </summary>
+    /// <param name="value">
+    ///     The date and time to format.
+    /// </param>
+    /// <param name="dateFormat">
+    ///     The date format, e.g. <see cref="LongDate"/>.
+    /// </param>
+    /// <param name="withTime">
+    ///     <see langword="true"/> to append the time, e.g. <c>, 19:30 Uhr</c>.
+    /// </param>
+    /// <returns>
+    ///     The formatted date, with the time if requested.
+    /// </returns>
+    private static string Stamp(DateTime value, string dateFormat, bool withTime)
+        => withTime
+            ? value.ToString(dateFormat + ", HH:mm", Cultures.German) + " Uhr"
+            : value.ToString(dateFormat, Cultures.German);
+}

Elternbeirat.Web/Features/Events/EventList.razor

@@ -1,56 +1,74 @@
 @page "/events"
 
-<PageTitle>Termine</PageTitle>
+@{
+    // Heading and intro come from the "events" page record; fall back to a sensible
+    // default only if that record is missing, so the page still renders.
+    var title = _page?.Title ?? "Termine";
+}
 
-<h1>Termine</h1>
+<PageTitle>@title</PageTitle>
 
-<p class="intro">
-    Alle Termine des Elternbeirats auf einen Blick. Sie können den Kalender auch
-    <a href="/events.ics">abonnieren</a> und in Ihrer Kalender-App automatisch
-    aktuell halten.
-</p>
+<h1>@title</h1>
 
-<h2>Kommende Termine</h2>
-
-@if (_upcoming.Count == 0)
+@if (_page is not null && !string.IsNullOrWhiteSpace(_page.Body))
 {
-    <p>Zurzeit sind keine Termine geplant.</p>
+    <article class="markdown-body">@Body</article>
+}
+
+@if (_unavailable)
+{
+    <p>Die Termine sind gerade nicht erreichbar. Bitte später erneut versuchen.</p>
 }
 else
 {
-    <ul class="event-list">
-        @foreach (var ev in _upcoming)
-        {
-            <li>
-                <time datetime="@ev.Start.ToString("s")">@EventFormat.Range(ev)</time>
-                <span class="event-title">@ev.Title</span>
-                @if (!string.IsNullOrWhiteSpace(ev.Location))
-                {
-                    <span class="event-location">@ev.Location</span>
-                }
-                @if (!string.IsNullOrWhiteSpace(ev.Note))
-                {
-                    <p class="event-note">@ev.Note</p>
-                }
-            </li>
-        }
-    </ul>
-}
+    @* The page body above is the intro; the page only adds the subscribe button. *@
+    <p class="events-subscribe">
+        <a class="btn btn-secondary" href="/events.ics"><Icon Name="calendar-plus" Size="18" /> Kalender abonnieren</a>
+    </p>
 
-@if (_past.Count > 0)
-{
-    <h2>Vergangene Termine</h2>
-    <ul class="event-list event-list-past">
-        @foreach (var ev in _past)
-        {
-            <li>
-                <time datetime="@ev.Start.ToString("s")">@EventFormat.Range(ev)</time>
-                <span class="event-title">@ev.Title</span>
-                @if (!string.IsNullOrWhiteSpace(ev.Location))
-                {
-                    <span class="event-location">@ev.Location</span>
-                }
-            </li>
-        }
-    </ul>
+    <h2>Kommende Termine</h2>
+
+    @if (_upcomingEvents.Count == 0)
+    {
+        <p>Zurzeit sind keine Termine geplant.</p>
+    }
+    else
+    {
+        <ul class="event-list">
+            @foreach (var ev in _upcomingEvents)
+            {
+                @* No Href: a card linking to this very page would lead nowhere. *@
+                <li><EventCard Value="ev" /></li>
+            }
+        </ul>
+    }
+
+    @* Past events matter rarely, so they wait folded up and compact: grouped by year,
+       then day, title and (if the event has one) the time per row. *@
+    @if (_pastEvents.Count > 0)
+    {
+        <details class="past-events disclosure">
+            <summary>Vergangene Termine anzeigen (@_pastEvents.Count)</summary>
+            @foreach (var year in PastYears)
+            {
+                <h3 class="past-events-year">@year.Key</h3>
+                <ul>
+                    @foreach (var ev in year)
+                    {
+                        var time = EventDateFormat.PastTime(ev);
+                        <li>
+                            <span class="past-event-date">@EventDateFormat.PastDays(ev)</span>
+                            <span class="past-event-title">
+                                @ev.Title
+                                @if (time.Length > 0)
+                                {
+                                    <span class="past-event-time">@time</span>
+                                }
+                            </span>
+                        </li>
+                    }
+                </ul>
+            }
+        </details>
+    }
 }

Elternbeirat.Web/Features/Events/EventList.razor.cs

@@ -1,48 +1,81 @@
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
+using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
 
 namespace Elternbeirat.Web.Features.Events;
 
 public partial class EventList
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load events from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Error,
+        Message = "Could not load events from PocketBase; content source is unavailable.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<EventList> Logger { get; set; } = default!;
+    private ILogger<EventList> Logger { get; set; } = null!;
 
-    private IReadOnlyList<Event> _upcoming = [];
-    private IReadOnlyList<Event> _past = [];
+    [Inject]
+    private TimeProvider Time { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    // The "events" page record supplies the heading and intro text, so an editor
+    // owns them in PocketBase like every other page, instead of them being
+    // hard-coded here. Null until loaded, or when no such page exists.
+    private Page? _page;
+
+    private IReadOnlyList<Event> _upcomingEvents = [];
+    private IReadOnlyList<Event> _pastEvents = [];
+
+    // Set when the content source could not be reached or read. The markup then
+    // shows a "temporarily unavailable" note instead of "no events", matching the
+    // 503 this sets on the response.
+    private bool _unavailable;
+
+    // Past events grouped by year for the small year headings. _pastEvents is most
+    // recent first, and GroupBy keeps that order, so the newest year comes first.
+    private IEnumerable<IGrouping<int, Event>> PastYears => _pastEvents.GroupBy(@event => @event.Start.Year);
+
+    // The page body rendered from Markdown to HTML, ready to emit as a MarkupString.
+    private MarkupString Body => (MarkupString)Markdown.ToHtml(_page?.Body);
 
     protected override async Task OnInitializedAsync()
     {
         IReadOnlyList<Event> events;
         try
         {
-            events = await PocketBase.GetEventsAsync();
+            var token = HttpContext?.RequestAborted ?? CancellationToken.None;
+            var pages = await PocketBase.GetPagesAsync(token);
+            _page = pages.FirstOrDefault(
+                page => string.Equals(page.Slug, "events", StringComparison.OrdinalIgnoreCase));
+            events = await PocketBase.GetEventsAsync(token);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> show empty sections instead of a 500. The page
-            // stays up; the "keine Termine" note is rendered.
-            LogLoadFailed(Logger, ex);
+            // Empty sections would claim there are no events. The site works, its
+            // data store is down: 503 and an honest note.
+            LogSourceUnavailable(Logger, exception);
+            _unavailable = true;
+            SourceUnavailable.SetStatus(HttpContext);
             return;
         }
 
         // Split into upcoming and past by date, so an event earlier today still
         // counts as upcoming. Upcoming earliest first, past most recent first.
-        var today = DateOnly.FromDateTime(DateTime.Today);
-        _upcoming = events
-            .Where(e => DateOnly.FromDateTime(e.Start) >= today)
-            .OrderBy(e => e.Start)
-            .ToList();
-        _past = events
-            .Where(e => DateOnly.FromDateTime(e.Start) < today)
-            .OrderByDescending(e => e.Start)
-            .ToList();
+        var today = BerlinClock.Today(Time);
+        _upcomingEvents = [.. UpcomingEvents.From(events, today)];
+        _pastEvents =
+        [
+            .. events
+                .Where(@event => DateOnly.FromDateTime(@event.Start) < today)
+                .OrderByDescending(@event => @event.Start)
+        ];
     }
 }

Elternbeirat.Web/Features/Events/EventList.razor.css

@@ -1,42 +1,85 @@
-.event-list {
-    list-style: none;
+/* The card grid (.event-list) is shared with the home-page embed and lives in the
+   global app.css; the card itself is EventCard. Only the page's own parts are here. */
+
+/* Same centred 42rem reading column as a content page (ContentPage.razor.css), so
+   every page of the site shares one column under the header. */
+h1,
+h2,
+article,
+p,
+.event-list,
+.past-events {
+    max-width: 42rem;
+    margin-inline: auto;
+}
+
+/* auto, not 0: this rule outweighs the column rule above and would otherwise pull
+   the button back to the left edge of the page. */
+.events-subscribe {
+    margin: var(--space-4) auto;
+}
+
+/* Past events: one folded-up card. Opened, a compact list grouped by year,
+   deliberately quieter than the upcoming cards above. The open/close triangle is
+   the shared .disclosure rule in app.css, the same as on the FAQ topics. */
+.past-events {
+    box-sizing: border-box;   /* padding inside the 42rem, flush with the text */
+    margin-top: var(--space-5);
+    padding: var(--space-3) var(--space-4);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    background: var(--color-surface);
+}
+
+.past-events-year {
+    margin: var(--space-4) 0 var(--space-1);
+    color: var(--color-text-soft);
+    font-size: 0.9rem;
+    font-weight: 700;
+    letter-spacing: 0.04em;
+}
+
+.past-events ul {
+    margin: 0;
     padding: 0;
+    list-style: none;
 }
 
-.event-list li {
-    padding: 0.75rem 0;
-    border-bottom: 1px solid #eee;
+/* On a phone the day sits above the title: a column beside it would leave the
+   title too little room. */
+.past-events li {
+    display: grid;
+    padding: var(--space-2) 0;
+    border-top: 1px solid var(--color-border);
 }
 
-.event-list time {
-    display: block;
-    color: #777;
-    font-size: 0.85rem;
+/* From tablet width on, day and title side by side. The day column has a fixed
+   width, so every title starts on the same line; it fits the longest single day,
+   "30. September". A span across months ("30. Januar – 2. Februar") wraps after
+   the dash inside the column. Same font size for both and baseline alignment, so
+   the two texts sit on one line. */
+@media (min-width: 40rem) {
+    .past-events li {
+        grid-template-columns: 8rem 1fr;
+        column-gap: var(--space-3);
+        align-items: baseline;
+    }
 }
 
-.event-title {
-    font-size: 1.1rem;
-    font-weight: 600;
+/* Tabular digits give every day the same width, so "1." and "10." line up. */
+.past-event-date {
+    color: var(--color-text-soft);
+    font-variant-numeric: tabular-nums;
 }
 
-.event-location::before {
-    content: " · ";
-    color: #777;
+.past-event-title {
+    color: var(--color-text);
 }
 
-.event-location {
-    color: #555;
-}
-
-.event-note {
-    margin: 0.25rem 0 0;
-    color: #444;
-}
-
-.event-list-past {
-    color: #777;
-}
-
-.event-list-past .event-title {
-    font-weight: 400;
+/* The time trails the title, quieter, as an addition rather than part of the name. */
+.past-event-time {
+    margin-left: var(--space-2);
+    color: var(--color-text-soft);
+    font-variant-numeric: tabular-nums;
+    white-space: nowrap;
 }

Elternbeirat.Web/Features/Events/IcsCalendar.cs

@@ -45,7 +45,7 @@ public static class IcsCalendar
         // between requests, so caches and clients do not see spurious changes.
         AppendLine(sb, "DTSTAMP:20000101T000000Z");
 
-        if (HasTime(ev))
+        if (ev.HasTime)
         {
             AppendLine(sb, $"DTSTART:{Local(ev.Start)}");
             if (ev.End is { } end)
@@ -75,12 +75,6 @@ public static class IcsCalendar
         AppendLine(sb, "END:VEVENT");
     }
 
-    /// <summary>
-    /// An entry counts as all-day when its start has no wall-clock time (00:00).
-    /// PocketBase has no separate flag; the convention is a midnight start.
-    /// </summary>
-    private static bool HasTime(Event ev) => ev.Start.TimeOfDay != TimeSpan.Zero;
-
     /// <summary>
     /// A UID that stays the same as long as the entry's title and start do, so a
     /// re-subscribe updates the event instead of creating a duplicate.

Elternbeirat.Web/Features/Events/UpcomingEvents.cs

@@ -0,0 +1,30 @@
+using Elternbeirat.Contracts;
+
+namespace Elternbeirat.Web.Features.Events;
+
+/// <summary>
+///     Picks the events that still lie ahead.
+/// </summary>
+/// <remarks>
+///     The events page, the events embed and the "next event" card on the home page
+///     all need the same answer to "what is coming up?". Keeping the rule here means a
+///     change to it (e.g. hiding an event once it has ended) reaches all three.
+/// </remarks>
+/// <seealso cref="Shared.BerlinClock"/>
+public static class UpcomingEvents
+{
+    /// <summary>
+    ///     Returns the events on or after <paramref name="today"/>, earliest first.
+    /// </summary>
+    /// <param name="events">All events, in any order.</param>
+    /// <param name="today">The current day, from <see cref="Shared.BerlinClock.Today"/>.</param>
+    /// <returns>The upcoming events, ordered by start.</returns>
+    /// <remarks>
+    ///     Compared by day, not by the minute: an event earlier today still counts as
+    ///     upcoming, so a visitor who checks during the evening's meeting still finds it.
+    /// </remarks>
+    public static IEnumerable<Event> From(IEnumerable<Event> events, DateOnly today) =>
+        events
+            .Where(@event => DateOnly.FromDateTime(@event.Start) >= today)
+            .OrderBy(@event => @event.Start);
+}

Elternbeirat.Web/Features/Faqs/FaqList.razor

@@ -1,28 +1,47 @@
 @page "/faqs"
 
-<PageTitle>Häufige Fragen</PageTitle>
+@{
+    // Heading and intro come from the "faqs" page record; fall back to a sensible
+    // default only if that record is missing, so the page still renders.
+    var title = _page?.Title ?? "FAQs";
+}
 
-<h1>Häufige Fragen</h1>
+<PageTitle>@title</PageTitle>
 
-@if (_groups.Count == 0)
+<h1>@title</h1>
+
+@if (_page is not null && !string.IsNullOrWhiteSpace(_page.Body))
+{
+    <article class="markdown-body">@Body</article>
+}
+
+@if (_unavailable)
+{
+    <p>Die Fragen sind gerade nicht erreichbar. Bitte später erneut versuchen.</p>
+}
+else if (_topics.Count == 0)
 {
     <p>Zurzeit gibt es keine Fragen.</p>
 }
 else
 {
-    @foreach (var group in _groups)
+    @foreach (var topic in _topics)
     {
-        <section class="faq-topic">
-            <h2>@TopicLabel(group.Key)</h2>
-            @foreach (var faq in group)
+        <details class="faq-topic disclosure">
+            <summary>@topic.Title</summary>
+            @if (!string.IsNullOrWhiteSpace(topic.Intro))
+            {
+                <div class="faq-topic-intro markdown-body">@((MarkupString)Markdown.ToHtml(topic.Intro))</div>
+            }
+            @foreach (var faq in topic.Faqs)
             {
                 <details class="faq-item">
                     <summary>@faq.Question</summary>
-                    <div class="faq-answer">
+                    <div class="faq-answer markdown-body">
                         @((MarkupString)Markdown.ToHtml(faq.Answer))
                     </div>
                 </details>
             }
-        </section>
+        </details>
     }
 }

Elternbeirat.Web/Features/Faqs/FaqList.razor.cs

@@ -1,48 +1,61 @@
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
+using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
 
 namespace Elternbeirat.Web.Features.Faqs;
 
 public partial class FaqList
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load FAQs from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
-
-    // German heading per topic. Unknown topics fall back to the raw key so a new
-    // topic in PocketBase still shows up rather than being silently dropped.
-    private static readonly Dictionary<string, string> TopicLabels =
-        new(StringComparer.Ordinal)
-        {
-            ["mensa"] = "Mensa und Mittagessen",
-            ["schliessfach"] = "Schließfächer",
-            ["elterneuro"] = "Eltern-Euro",
-            ["elternarbeit"] = "Elternarbeit und Mitmachen",
-        };
+    [LoggerMessage(
+        Level = LogLevel.Error,
+        Message = "Could not load FAQ topics from PocketBase; content source is unavailable.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<FaqList> Logger { get; set; } = default!;
+    private ILogger<FaqList> Logger { get; set; } = null!;
 
-    private IReadOnlyList<IGrouping<string, Faq>> _groups = [];
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    // The "faqs" page record supplies the heading and intro text, so an editor
+    // owns them in PocketBase rather than them being hard-coded here. Null until
+    // loaded, or when no such page exists.
+    private Page? _page;
+
+    private IReadOnlyList<FaqTopic> _topics = [];
+
+    // Set when the content source could not be reached or read. The markup then
+    // shows a "temporarily unavailable" note instead of "no topics", matching
+    // the 503 this sets on the response.
+    private bool _unavailable;
+
+    // The page body rendered from Markdown to HTML, ready to emit as a
+    // MarkupString in the markup.
+    private MarkupString Body => (MarkupString)Markdown.ToHtml(_page?.Body);
 
     protected override async Task OnInitializedAsync()
     {
         try
         {
-            var faqs = await PocketBase.GetFaqsAsync();
-            _groups = [.. faqs.GroupBy(faq => faq.Topic)];
+            var token = HttpContext?.RequestAborted ?? CancellationToken.None;
+            var pages = await PocketBase.GetPagesAsync(token);
+            _page = pages.FirstOrDefault(
+                page => string.Equals(page.Slug, "faqs", StringComparison.OrdinalIgnoreCase));
+            _topics = await PocketBase.GetFaqTopicsAsync(token);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> show an empty page instead of a 500. The page
-            // stays up; the "keine Fragen" note is rendered.
-            LogLoadFailed(Logger, ex);
+            // An empty page would claim there are no topics. The site works, its
+            // data store is down: 503 and an honest note.
+            LogSourceUnavailable(Logger, exception);
+            _unavailable = true;
+            SourceUnavailable.SetStatus(HttpContext);
         }
     }
-
-    private static string TopicLabel(string topic) =>
-        TopicLabels.TryGetValue(topic, out var label) ? label : topic;
 }

Elternbeirat.Web/Features/Faqs/FaqList.razor.css

@@ -1,22 +1,17 @@
+/* Same centred 42rem reading column as a content page (ContentPage.razor.css), so
+   every page of the site shares one column under the header. The topic cards and
+   the questions inside them live in the global app.css. */
+h1,
+article,
+p,
 .faq-topic {
-    margin-bottom: 2rem;
+    box-sizing: border-box;   /* padding inside the 42rem, flush with the text */
+    max-width: 42rem;
+    margin-inline: auto;
 }
 
-.faq-topic h2 {
-    margin-bottom: 0.5rem;
-}
-
-.faq-item {
-    border-bottom: 1px solid #eee;
-    padding: 0.5rem 0;
-}
-
-.faq-item summary {
-    cursor: pointer;
-    font-weight: 600;
-}
-
-.faq-answer {
-    padding: 0.5rem 0 0.25rem;
-    color: #333;
+/* The intro's last paragraph drops its margin (app.css), so the first card would
+   sit right under the text; this gives it the same air as between sections. */
+article {
+    margin-bottom: var(--space-5);
 }

Elternbeirat.Web/Features/Home/Home.razor

@@ -1,12 +1,82 @@
 @page "/"
+@using Elternbeirat.Web.Features.Events
 
 <PageTitle>Elternbeirat der IGMH</PageTitle>
 
-<h1>Elternbeirat der IGMH</h1>
+@* The hero spans the full window width (see Home.razor.css). Its text is the "home"
+   page's body, taken apart by HomeIntro; the card beside it shows the next event. *@
+<section class="hero">
+    <div class="hero-inner">
+        <div class="hero-text">
+            <h1>@_intro.Title</h1>
 
-<p class="intro">
-    Willkommen beim Elternbeirat der IGMH. Hier finden Sie aktuelle Informationen,
-    Antworten auf häufige Fragen und Unterlagen rund um die Elternarbeit.
-</p>
+            @if (_intro.IntroHtml.Length > 0)
+            {
+                <div class="hero-intro">@((MarkupString)_intro.IntroHtml)</div>
+            }
 
-<PageEmbeds Embed="_embed" />
+            @if (_intro.Links.Count > 0)
+            {
+                <p class="hero-actions">
+                    @for (var i = 0; i < _intro.Links.Count; i++)
+                    {
+                        var link = _intro.Links[i];
+                        <a class="btn @(i == 0 ? "btn-primary" : "btn-secondary")" href="@link.Href">@link.Text</a>
+                    }
+                </p>
+            }
+        </div>
+
+        @if (_nextEvent is not null)
+        {
+            @* As in EventCard: the calendar sheet shows the date and is hidden from
+               screen readers, who get the full date from <EventDate> instead. Visible
+               beside the sheet is only what it cannot show: the time, the end. *@
+            var span = EventDateFormat.Span(_nextEvent);
+            <a class="next-event" href="/events">
+                <span class="next-event-label">Nächster Termin</span>
+                <span class="next-event-row">
+                    <CalendarSheet Value="_nextEvent.Start" />
+                    <span class="next-event-details">
+                        <span class="next-event-title">@_nextEvent.Title</span>
+                        <span class="visually-hidden"><EventDate Value="_nextEvent" /></span>
+                        @if (span.Length > 0)
+                        {
+                            <span class="next-event-meta"><Icon Name="clock" Size="16" /> @span</span>
+                        }
+                        @if (!string.IsNullOrWhiteSpace(_nextEvent.Location))
+                        {
+                            <span class="next-event-meta"><Icon Name="map-pin" Size="16" /> @_nextEvent.Location</span>
+                        }
+                    </span>
+                </span>
+            </a>
+        }
+    </div>
+</section>
+
+@if (_tiles.Count > 0)
+{
+    <section class="home-tiles" aria-labelledby="home-tiles-title">
+        <h2 id="home-tiles-title">Bereiche im Überblick</h2>
+        <ul>
+            @foreach (var tile in _tiles)
+            {
+                <li>
+                    <a class="tile-link" href="@tile.Href">
+                        <span class="tile-icon"><Icon Name="@tile.Icon" Size="24" /></span>
+                        <span class="tile-title">@tile.Title</span>
+                        @if (tile.Description.Length > 0)
+                        {
+                            <span class="tile-text">@tile.Description</span>
+                        }
+                    </a>
+                </li>
+            }
+        </ul>
+    </section>
+}
+
+<div class="home-embeds">
+    <PageEmbeds Embed="_embed" />
+</div>

Elternbeirat.Web/Features/Home/Home.razor.cs

@@ -1,36 +1,90 @@
+using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
+using Elternbeirat.Web.Features.Events;
+using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
 
 namespace Elternbeirat.Web.Features.Home;
 
 public partial class Home
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load the home page from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Warning,
+        Message = "Could not load the pages for the home page from PocketBase; showing the static title only.")]
+    private static partial void LogPagesUnavailable(
+        ILogger logger,
+        Exception exception);
+
+    [LoggerMessage(
+        Level = LogLevel.Warning,
+        Message = "Could not load events for the home page from PocketBase; the next-event card is omitted.")]
+    private static partial void LogEventsUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<Home> Logger { get; set; } = default!;
+    private ILogger<Home> Logger { get; set; } = null!;
 
-    // Which dynamic blocks the home page shows is editorial: it comes from the
-    // "home" page's embed field in PocketBase, not from hard-coded markup.
+    [Inject]
+    private TimeProvider Time { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    // Heading, intro and buttons come from the "home" page's body. Until it is loaded
+    // -- and for good if PocketBase fails during this request -- the static fallback
+    // heading stands, so the start page always has a title.
+    private HomeIntro _intro = HomeIntro.Fallback;
+
+    // The hero, the tiles and the next-event card are fixed structure of the start
+    // page; which dynamic blocks follow below is editorial and comes from the "home"
+    // page's embed field.
+    private IReadOnlyList<HomeTile> _tiles = [];
     private IReadOnlyList<string> _embed = [];
+    private Event? _nextEvent;
 
-    protected override async Task OnInitializedAsync()
+    protected override Task OnInitializedAsync()
+    {
+        var token = HttpContext?.RequestAborted ?? CancellationToken.None;
+        return Task.WhenAll(LoadPagesAsync(token), LoadNextEventAsync(token));
+    }
+
+    // Pages and events load side by side and fail on their own: without events the
+    // page loses only the card, without pages only text and tiles. A PocketBase that
+    // is plainly down never gets this far -- the maintenance gate in Program.cs
+    // answers with maintenance.html first. These catches are the second line: the
+    // gate's health result is cached for a few seconds, so PocketBase can fail between
+    // that check and these reads. Without them that would be a 500; with them the
+    // start page stays a 200 rather than a 503 -- degraded, not broken, and rare.
+    private async Task LoadPagesAsync(CancellationToken token)
     {
         try
         {
-            var pages = await PocketBase.GetPagesAsync();
-            var home = pages.FirstOrDefault(
-                p => string.Equals(p.Slug, "home", StringComparison.Ordinal));
+            var pages = await PocketBase.GetPagesAsync(token);
+            var home = pages.FirstOrDefault(page => Page.IsHomeSlug(page.Slug));
+            _intro = HomeIntro.Parse(home?.Body);
             _embed = home?.Embed ?? [];
+            _tiles = HomeTile.From(pages);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> render the intro without embeds instead of a 500.
-            LogLoadFailed(Logger, ex);
+            LogPagesUnavailable(Logger, exception);
+        }
+    }
+
+    private async Task LoadNextEventAsync(CancellationToken token)
+    {
+        try
+        {
+            var events = await PocketBase.GetEventsAsync(token);
+            _nextEvent = UpcomingEvents.From(events, BerlinClock.Today(Time)).FirstOrDefault();
+        }
+        catch (PocketBaseUnavailableException exception)
+        {
+            LogEventsUnavailable(Logger, exception);
         }
     }
 }

Elternbeirat.Web/Features/Home/Home.razor.css

@@ -1,4 +1,311 @@
-.intro {
+/* --- Hero ---------------------------------------------------------------------
+   A full-width band in the brand gradient with a faint dot pattern on top. The
+   page content sits in a centred column (.content in MainLayout), so the band
+   breaks out of it: 100vw wide, pulled left by the column's offset. body clips the
+   few pixels of scrollbar this adds (see app.css). The negative top margin cancels
+   the column's top padding, so the band meets the header without a strip of page
+   background in between.
+   The pattern is an inline SVG in a data: URL -- no request, nothing from another
+   host. White dots at 12% opacity: visible as texture, too faint to cost the
+   white text any contrast. */
+.hero {
+    width: 100vw;
+    margin: calc(-1 * var(--space-4)) 0 var(--space-5) calc(50% - 50vw);
+    background:
+        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24'%3E%3Ccircle cx='3' cy='3' r='1.5' fill='%23fff' fill-opacity='.12'/%3E%3C/svg%3E"),
+        var(--gradient-brand);
+    color: var(--color-on-header);
+}
+
+/* The inside follows the page frame again, so the hero text lines up with the
+   tiles and lists below. Stacked on a phone; from tablet width the next-event card
+   moves beside the text. */
+.hero-inner {
+    box-sizing: border-box;
+    max-width: var(--content-width);
+    margin: 0 auto;
+    padding: var(--space-6) 1.25rem;
+    display: grid;
+    gap: var(--space-5);
+    align-items: center;
+}
+
+@media (min-width: 48rem) {
+    .hero-inner {
+        grid-template-columns: minmax(0, 1fr) minmax(16rem, 22rem);
+    }
+}
+
+/* On the gradient everything is white: the global heading colour is a blue that
+   would vanish here. */
+/* balance evens out the lines, so a short last word ("IGMH") never wraps alone. */
+.hero h1 {
+    color: var(--color-on-header);
+    text-wrap: balance;
+}
+
+/* The intro is editor Markdown, rendered without scope attributes, so it is reached
+   through ::deep. Slightly larger than body text, as a lead. Links stay white and
+   underlined: the blue link colour would be unreadable on the gradient. */
+.hero-intro ::deep p {
+    font-size: 1.15rem;
+}
+
+.hero-intro ::deep a,
+.hero-intro ::deep a:hover {
+    color: var(--color-on-header);
+}
+
+.hero-actions {
+    display: flex;
+    flex-wrap: wrap;
+    gap: var(--space-3);
+    margin: var(--space-4) 0 0;
+}
+
+/* The hero's buttons, adapted to the dark gradient: the primary turns light (a
+   filled blue would melt into the blue end), the secondary becomes a white outline
+   with the same translucent wash as the header menu on hover. The focus ring turns
+   white for the same reason. */
+.hero .btn-primary {
+    background: var(--color-button-light);
+    border-color: var(--color-button-light);
+    color: var(--color-on-button-light);
+}
+
+.hero .btn-primary:hover {
+    background: var(--color-button-light-hover);
+    border-color: var(--color-button-light-hover);
+    color: var(--color-on-button-light);
+}
+
+.hero .btn-secondary {
+    border-color: var(--color-on-header);
+    color: var(--color-on-header);
+}
+
+.hero .btn-secondary:hover {
+    background: var(--color-nav-hover);
+    color: var(--color-on-header);
+}
+
+.hero .btn:focus-visible {
+    outline-color: var(--color-focus-inverse);
+}
+
+/* On a phone the buttons used to wrap onto a row each: two wide blocks stacked,
+   far too heavy for the top of the page. Instead they share one row in equal
+   columns -- the same buttons as on the desktop, just side by side and a little
+   tighter. Short labels ("Termine", "Kontakt") fit on one line; a longer one
+   wraps inside its button (centred) rather than pushing the other off the row. */
+@media (max-width: 40rem) {
+    .hero-actions {
+        display: grid;
+        grid-auto-flow: column;
+        grid-auto-columns: 1fr;
+        gap: var(--space-2);
+    }
+
+    .hero .btn {
+        justify-content: center;
+        padding: var(--space-2) var(--space-3);
+        text-align: center;
+    }
+}
+
+/* --- Next event ---------------------------------------------------------------
+   A card on the gradient: the regular card surface, so its text uses the normal
+   tokens and adapts to dark mode by itself. The whole card is one link to the
+   events page. */
+.next-event {
+    display: block;
+    padding: var(--space-4);
+    border-radius: var(--radius);
+    background: var(--color-bg);
+    box-shadow: var(--shadow-lg);
+    color: var(--color-text);
+    text-decoration: none;
+    transition: box-shadow var(--transition);
+}
+
+.next-event:hover {
+    color: var(--color-text);
+    box-shadow: var(--shadow-hover), var(--shadow-lg);
+}
+
+/* The ring sits outside the card, on the gradient, so it is white like the
+   hero's button rings. */
+.next-event:focus-visible {
+    outline-color: var(--color-focus-inverse);
+    outline-offset: 3px;
+}
+
+.next-event-label {
+    display: block;
+    margin-bottom: var(--space-3);
+    color: var(--color-text-soft);
+    font-size: 0.85rem;
+    font-weight: 700;
+    letter-spacing: 0.05em;
+    text-transform: uppercase;
+}
+
+.next-event-row {
+    display: flex;
+    gap: var(--space-3);
+    align-items: flex-start;
+}
+
+.next-event-details {
+    min-width: 0;   /* lets a long title wrap instead of widening the card */
+}
+
+.next-event-title {
+    display: block;
+    color: var(--color-brand);
+    font-size: 1.15rem;
+    font-weight: 700;
+    line-height: 1.3;
+}
+
+/* Time and place, one line each with their icon, green as on the event cards. The
+   icon belongs to Icon's own scope, so it is reached through ::deep. */
+.next-event-meta {
+    display: flex;
+    align-items: center;
+    gap: var(--space-1);
+    margin-top: var(--space-1);
+    color: var(--color-text-soft);
+    font-size: 0.9rem;
+}
+
+.next-event-meta ::deep .icon {
+    color: var(--color-accent-dark);
+}
+
+/* --- Tiles --------------------------------------------------------------------
+   One card per header page. Fixed columns instead of auto-fill: two on a phone,
+   three from tablet width, so the six pages always fill whole rows and never leave
+   a half row behind. On a phone the tiles are compact (icon and title only), the
+   teaser would make six tiles a long scroll. Hover = stronger shadow and a blue
+   edge, nothing moves. */
+.home-tiles {
+    margin-block: var(--space-5);
+}
+
+.home-tiles ul {
+    display: grid;
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+    gap: var(--space-3);
+    margin: 0;
+    padding: 0;
+    list-style: none;
+}
+
+/* On a phone the icon sits above the title: beside it, a half-width column leaves
+   too little room and titles get cut. */
+.tile-link {
+    box-sizing: border-box;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: var(--space-2);
+    height: 100%;
+    text-align: center;
+    padding: var(--space-3);
+    border: 1px solid transparent;
+    border-radius: var(--radius);
+    background: var(--color-bg);
+    box-shadow: var(--shadow);
+    color: var(--color-text);
+    text-decoration: none;
+    transition: box-shadow var(--transition), border-color var(--transition);
+}
+
+.tile-link:hover {
+    border-color: var(--color-brand);
+    box-shadow: var(--shadow-hover);
+    color: var(--color-text);
+}
+
+/* The icon in a soft round tint. */
+.tile-icon {
+    flex-shrink: 0;
+    display: grid;
+    place-items: center;
+    width: 3rem;
+    height: 3rem;
+    border-radius: 50%;
+    background: var(--color-brand-tint);
+    color: var(--color-brand);
+}
+
+/* Long German compounds must wrap rather than overflow the narrow tile. */
+.tile-title {
+    max-width: 100%;
+    color: var(--color-brand);
     font-size: 1.1rem;
-    color: #444;
+    font-weight: 700;
+    overflow-wrap: anywhere;
+}
+
+/* Hidden on a phone; the title alone says where the tile leads. */
+.tile-text {
+    display: none;
+    color: var(--color-text-soft);
+    font-size: 0.9rem;
+    line-height: 1.45;
+}
+
+@media (min-width: 48rem) {
+    .home-tiles ul {
+        grid-template-columns: repeat(3, minmax(0, 1fr));
+    }
+
+    /* Icon left, title and teaser right. Both start at the top, so the icon stays
+       beside the title even when the teaser runs over several lines. The icon spans
+       both rows here, where the teaser is visible. */
+    .tile-link {
+        display: grid;
+        grid-template-columns: auto minmax(0, 1fr);
+        column-gap: var(--space-3);
+        row-gap: 0;
+        align-content: start;
+        padding: var(--space-3) var(--space-4);
+        text-align: start;
+    }
+
+    .tile-icon {
+        grid-row: span 2;
+        align-self: start;
+    }
+
+    /* The teaser is a whole sentence; the tile cuts it visually after three lines,
+       so the tiles of a row keep a similar height whatever the editor wrote. The
+       -webkit- box is the form every current browser supports for line-clamp. */
+    .tile-text {
+        display: -webkit-box;
+        -webkit-box-orient: vertical;
+        -webkit-line-clamp: 3;
+        line-clamp: 3;
+        overflow: hidden;
+    }
+}
+
+/* --- Embeds -------------------------------------------------------------------
+   The blocks the home page opts into (posts, events) sit side by side from desktop
+   width, so the start page shows both without a long scroll. One column below.
+   In the grid the blocks' own top margin no longer collapses with the margin of
+   the tiles above, so it is dropped there; otherwise the gap would be doubled. */
+@media (min-width: 64rem) {
+    .home-embeds {
+        display: grid;
+        grid-template-columns: repeat(2, minmax(0, 1fr));
+        gap: var(--space-5);
+        align-items: start;
+    }
+
+    .home-embeds ::deep .embed {
+        margin-top: 0;
+    }
 }

Elternbeirat.Web/Features/Home/HomeIntro.cs

@@ -0,0 +1,128 @@
+using Elternbeirat.Web.Shared;
+using Markdig.Syntax;
+using Markdig.Syntax.Inlines;
+
+namespace Elternbeirat.Web.Features.Home;
+
+/// <summary>
+///     The head of the home page, taken apart from the <c>home</c> page's Markdown body:
+///     a large heading, an intro and a row of buttons.
+/// </summary>
+/// <param name="Title">The large heading.</param>
+/// <param name="IntroHtml">The intro rendered to HTML, or an empty string.</param>
+/// <param name="Links">The buttons, in the order the editor wrote them; may be empty.</param>
+/// <remarks>
+///     Everything visible here is written by editors in PocketBase. The page only gives
+///     it the hero layout, so the editor needs no new field and no special syntax:
+///     <list type="bullet">
+///         <item><description>The first <c># heading</c> becomes the large heading.</description></item>
+///         <item>
+///             <description>
+///                 A last paragraph made of nothing but links becomes the button row;
+///                 the first link is the primary button.
+///             </description>
+///         </item>
+///         <item><description>Everything else is the intro text.</description></item>
+///     </list>
+///     <para>
+///         <see cref="Fallback"/> keeps a static heading when PocketBase cannot be
+///         reached, so the start page never renders without a title.
+///     </para>
+/// </remarks>
+/// <example>
+///     <code>
+///         HomeIntro.Parse("# Willkommen\n\nSchön, dass Sie da sind.\n\n[Termine](/events) [Kontakt](/contact)");
+///         // Title "Willkommen", IntroHtml "&lt;p&gt;Schön, dass Sie da sind.&lt;/p&gt;\n", two links
+///     </code>
+/// </example>
+public sealed record HomeIntro(string Title, string IntroHtml, IReadOnlyList<HomeLink> Links)
+{
+    /// <summary>
+    ///     The heading shown when the body has none or PocketBase is not reachable.
+    /// </summary>
+    public const string FallbackTitle = "Elternbeirat der IGMH";
+
+    /// <summary>
+    ///     The head of the home page without any content from PocketBase: the static
+    ///     heading, no intro, no buttons.
+    /// </summary>
+    public static HomeIntro Fallback { get; } = new(FallbackTitle, "", []);
+
+    /// <summary>
+    ///     Takes the <c>home</c> page's body apart into heading, intro and buttons.
+    /// </summary>
+    /// <param name="markdown">The body; may be <see langword="null"/> or empty.</param>
+    /// <returns>
+    ///     The parts; <see cref="Fallback"/> for an empty body. Without a level-1
+    ///     heading, the title is <see cref="FallbackTitle"/> and the rest is used as is.
+    /// </returns>
+    /// <remarks>
+    ///     Only top-level blocks are looked at: a heading or a link paragraph inside a
+    ///     list or a <c>:::</c> block stays part of the intro. Links in the button row
+    ///     may be separated by spaces or line breaks; any other text in the paragraph
+    ///     (e.g. "oder") keeps it a normal paragraph, because the button row would drop
+    ///     that text.
+    /// </remarks>
+    public static HomeIntro Parse(string? markdown)
+    {
+        if (string.IsNullOrWhiteSpace(markdown))
+        {
+            return Fallback;
+        }
+
+        var document = Markdown.Parse(markdown);
+
+        var heading = document.OfType<HeadingBlock>().FirstOrDefault(block => block.Level == 1);
+        if (heading is not null)
+        {
+            document.Remove(heading);
+        }
+
+        var links = document.LastChild is ParagraphBlock last ? LinksOnly(last) : [];
+        if (links.Count > 0)
+        {
+            document.RemoveAt(document.Count - 1);
+        }
+
+        var title = heading?.Inline is { } inline ? Markdown.PlainText(inline) : "";
+        return new HomeIntro(
+            string.IsNullOrEmpty(title) ? FallbackTitle : title,
+            Markdown.Render(document),
+            links);
+    }
+
+    /// <summary>
+    ///     Reads the links of a paragraph that holds nothing but links.
+    /// </summary>
+    /// <param name="paragraph">The paragraph to inspect.</param>
+    /// <returns>
+    ///     Its links, or an empty list if the paragraph contains anything besides links
+    ///     and whitespace (including an image).
+    /// </returns>
+    private static List<HomeLink> LinksOnly(ParagraphBlock paragraph) =>
+        paragraph.Inline?.Where(inline => !Markdown.IsBlank(inline)).ToList() is { Count: > 0 } inlines
+        && inlines.All(inline => inline is LinkInline { IsImage: false } or AutolinkInline)
+            ? [.. inlines.Select(ToLink)]
+            : [];
+
+    /// <summary>
+    ///     Turns a link inline into a button.
+    /// </summary>
+    /// <param name="inline">A <see cref="LinkInline"/> or <see cref="AutolinkInline"/>.</param>
+    /// <returns>The button's target and visible text.</returns>
+    /// <exception cref="ArgumentException"><paramref name="inline"/> is neither kind of link.</exception>
+    private static HomeLink ToLink(Inline inline) =>
+        inline switch
+        {
+            LinkInline link => new HomeLink(link.Url ?? "", Markdown.PlainText(link)),
+            AutolinkInline autolink => new HomeLink(autolink.Url, autolink.Url),
+            _ => throw new ArgumentException("Not a link.", nameof(inline)),
+        };
+}
+
+/// <summary>
+///     A button in the head of the home page.
+/// </summary>
+/// <param name="Href">The link target as the editor wrote it.</param>
+/// <param name="Text">The visible button text.</param>
+public sealed record HomeLink(string Href, string Text);

Elternbeirat.Web/Features/Home/HomeTile.cs

@@ -0,0 +1,39 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Features.Layout;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Features.Home;
+
+/// <summary>
+///     One tile on the home page, leading to a section of the site.
+/// </summary>
+/// <param name="Href">Target URL of the page.</param>
+/// <param name="Title">The page's title.</param>
+/// <param name="Description">
+///     The first sentence of the page's body, or an empty string, in which case the
+///     tile shows only the title.
+/// </param>
+/// <param name="Icon">The icon name, see <see cref="TileIcons"/>.</param>
+public sealed record HomeTile(string Href, string Title, string Description, string Icon)
+{
+    /// <summary>
+    ///     Builds one tile per header page except the home page itself.
+    /// </summary>
+    /// <param name="pages">All public pages.</param>
+    /// <returns>The tiles, in menu order.</returns>
+    /// <remarks>
+    ///     The tiles mirror the header menu (<see cref="NavBuilder.HeaderPages"/>), so a
+    ///     page an editor puts into the header appears here too, without any code. The
+    ///     home page is left out: a tile leading to the page it sits on would be useless.
+    /// </remarks>
+    public static IReadOnlyList<HomeTile> From(IReadOnlyList<Page> pages) =>
+    [
+        .. NavBuilder.HeaderPages(pages)
+            .Where(page => !Page.IsHomeSlug(page.Slug))
+            .Select(page => new HomeTile(
+                NavBuilder.HrefFor(page.Slug),
+                page.Title,
+                Markdown.FirstSentence(page.Body),
+                TileIcons.For(page.Slug))),
+    ];
+}

Elternbeirat.Web/Features/Home/TileIcons.cs

@@ -0,0 +1,45 @@
+using System.Collections.Frozen;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Features.Home;
+
+/// <summary>
+///     Chooses the icon of a home page tile from the page's slug.
+/// </summary>
+/// <remarks>
+///     Pure presentation, so it lives in code: the schema has no icon field, and adding
+///     one needs a schema change that cannot reach production yet. A page without an
+///     entry here (e.g. one an editor just created) gets <see cref="Default"/>, so a
+///     new page always shows up as a complete tile.
+/// </remarks>
+/// <seealso cref="IconSet"/>
+public static class TileIcons
+{
+    /// <summary>
+    ///     The icon for a slug without its own entry: a generic page.
+    /// </summary>
+    public const string Default = "file-text";
+
+    /// <summary>
+    ///     Icon name per slug. Every value must be a name in <see cref="IconSet"/>.
+    /// </summary>
+    private static readonly FrozenDictionary<string, string> Icons =
+        new Dictionary<string, string>
+        {
+            ["board"] = "users",
+            ["patrons"] = "heart-handshake",
+            ["faqs"] = "help-circle",
+            ["downloads"] = "download",
+            ["posts"] = "newspaper",
+            ["events"] = "calendar",
+            ["contact"] = "mail",
+        }.ToFrozenDictionary(StringComparer.Ordinal);
+
+    /// <summary>
+    ///     Returns the icon name for a page.
+    /// </summary>
+    /// <param name="slug">The page's slug, e.g. <c>board</c>.</param>
+    /// <returns>An icon name from <see cref="IconSet"/>; <see cref="Default"/> for an unknown slug.</returns>
+    public static string For(string slug) =>
+        Icons.GetValueOrDefault(slug, Default);
+}

Elternbeirat.Web/Features/Layout/FooterYear.cs

@@ -0,0 +1,35 @@
+namespace Elternbeirat.Web.Features.Layout;
+
+/// <summary>
+///     Works out the year shown in the footer's copyright line.
+/// </summary>
+/// <remarks>
+///     The container runs on UTC, but visitors live in Germany. Taking the year
+///     straight from the server clock would show the old year for the first hour
+///     (two in summer time) of every new year, so the instant is converted to
+///     Europe/Berlin first.
+/// </remarks>
+public static class FooterYear
+{
+    /// <summary>
+    ///     IANA id; resolves on every platform .NET supports, Windows included.
+    /// </summary>
+    private static readonly TimeZoneInfo Berlin =
+        TimeZoneInfo.FindSystemTimeZoneById("Europe/Berlin");
+
+    /// <summary>
+    ///     Returns the calendar year in Berlin at the given instant.
+    /// </summary>
+    /// <param name="now">
+    ///     The current instant, in any offset; usually
+    ///     <see cref="TimeProvider.GetUtcNow"/>.
+    /// </param>
+    /// <returns>The year a visitor in Germany would see on their calendar.</returns>
+    /// <example>
+    ///     <code>
+    ///         FooterYear.For(new DateTimeOffset(2026, 12, 31, 23, 30, 0, TimeSpan.Zero)); // 2027
+    ///     </code>
+    /// </example>
+    public static int For(DateTimeOffset now) =>
+        TimeZoneInfo.ConvertTime(now, Berlin).Year;
+}

Elternbeirat.Web/Features/Layout/NavBuilder.cs

@@ -3,29 +3,53 @@ using Elternbeirat.Contracts;
 namespace Elternbeirat.Web.Features.Layout;
 
 /// <summary>
-/// Builds the header and footer navigation from the public pages. Pages carry a
-/// <see cref="Page.Location"/> ("header"/"footer"/"") and an <see cref="Page.Order"/>;
-/// pages without a location are sub-pages and never appear in a menu.
+/// Builds the header and footer navigation from the public pages. Every page
+/// carries a required <see cref="Page.Location"/> ("header" or "footer") and an
+/// <see cref="Page.Order"/>; this splits them into the two menus, each ordered.
 /// </summary>
 public static class NavBuilder
 {
     /// <summary>Header links, ordered, built from pages with location "header".</summary>
     public static IReadOnlyList<NavLinkItem> Header(IReadOnlyList<Page> pages) =>
-        Build(pages, "header");
+        ToLinks(PagesAt(pages, "header"));
 
     /// <summary>Footer links, ordered, built from pages with location "footer".</summary>
     public static IReadOnlyList<NavLinkItem> Footer(IReadOnlyList<Page> pages) =>
-        Build(pages, "footer");
+        ToLinks(PagesAt(pages, "footer"));
 
-    private static List<NavLinkItem> Build(IReadOnlyList<Page> pages, string location) =>
+    /// <summary>
+    ///     Returns the pages of the header menu themselves, in menu order.
+    /// </summary>
+    /// <param name="pages">All public pages.</param>
+    /// <returns>The pages with location <c>header</c>, ordered by <see cref="Page.Order"/>.</returns>
+    /// <remarks>
+    ///     For callers that need more than a link, such as the tiles on the home page,
+    ///     which also show part of each page's body. Using the same selection as
+    ///     <see cref="Header"/> keeps tiles and menu in step.
+    /// </remarks>
+    public static IReadOnlyList<Page> HeaderPages(IReadOnlyList<Page> pages) =>
+        PagesAt(pages, "header");
+
+    /// <summary>
+    ///     Returns the URL a page is reached at.
+    /// </summary>
+    /// <param name="slug">The page's slug.</param>
+    /// <returns><c>/</c> for the home page, otherwise <c>/{slug}</c>.</returns>
+    /// <remarks>
+    ///     The home page owns "/" (served by the Home component); every other slug is
+    ///     reached at "/{slug}", where either a literal route or the catch-all content
+    ///     page renders it.
+    /// </remarks>
+    public static string HrefFor(string slug) =>
+        Page.IsHomeSlug(slug) ? "/" : $"/{slug}";
+
+    private static List<Page> PagesAt(
+        IReadOnlyList<Page> pages,
+        string location) =>
         [.. pages
             .Where(page => string.Equals(page.Location, location, StringComparison.Ordinal))
-            .OrderBy(page => page.Order)
-            .Select(page => new NavLinkItem(HrefFor(page.Slug), page.Title))];
+            .OrderBy(page => page.Order)];
 
-    // The home page owns "/" (served by the Home component); every other slug is
-    // reached at "/{slug}", where either a literal route or the catch-all content
-    // page renders it.
-    private static string HrefFor(string slug) =>
-        string.Equals(slug, "home", StringComparison.Ordinal) ? "/" : $"/{slug}";
+    private static List<NavLinkItem> ToLinks(IEnumerable<Page> pages) =>
+        [.. pages.Select(page => new NavLinkItem(HrefFor(page.Slug), page.Title))];
 }

Elternbeirat.Web/Features/Layout/Signet.razor

@@ -0,0 +1,17 @@
+@*
+    The site's own small mark: a speech bubble (the board speaks for the parents)
+    holding a grown-up and a child. Inline SVG, so there is no extra request and
+    nothing from a third-party host. Decorative only -- the name next to it carries
+    the meaning, so it is hidden from screen readers. Colours come from tokens in
+    Signet.razor.css; the size is set by whoever places it (MainLayout.razor.css).
+*@
+<svg class="signet" viewBox="0 0 40 40" width="40" height="40" aria-hidden="true" focusable="false">
+    <path class="signet-bubble"
+          d="M8 4h24a6 6 0 0 1 6 6v15a6 6 0 0 1-6 6H18l-8 6v-6H8a6 6 0 0 1-6-6V10a6 6 0 0 1 6-6z" />
+    <g class="signet-figures">
+        <circle cx="15" cy="12" r="3.5" />
+        <path d="M9 26c0-5 2.7-8 6-8s6 3 6 8z" />
+        <circle cx="26" cy="16" r="2.6" />
+        <path d="M21.5 26c0-3.8 2-6 4.5-6s4.5 2.2 4.5 6z" />
+    </g>
+</svg>

Elternbeirat.Web/Features/Layout/Signet.razor.css

@@ -0,0 +1,11 @@
+/* A white bubble with green figures. It sits on the header gradient and on the dark
+   footer, both of which always carry white text, so --color-on-header is right in
+   both places. The figures use the darker green so they stay distinct on the white
+   bubble (the lighter --color-accent would wash out). */
+.signet-bubble {
+    fill: var(--color-on-header);
+}
+
+.signet-figures {
+    fill: var(--color-accent-dark);
+}

Elternbeirat.Web/Features/Pages/ContentPage.razor

@@ -1,14 +1,16 @@
 @page "/{Slug}"
 
-@if (_page is null)
+@if (_unavailable)
 {
-    <PageTitle>Nicht gefunden</PageTitle>
+    <PageTitle>Vorübergehend nicht erreichbar</PageTitle>
+    <p>Die Seite ist gerade nicht erreichbar. Bitte später erneut versuchen.</p>
 }
-else
+else if (_page is not null)
 {
     <PageTitle>@_page.Title</PageTitle>
-    <article>
-        @Body
-    </article>
+    <h1>@_page.Title</h1>
+    <article class="markdown-body">@Body</article>
     <PageEmbeds Embed="_page.Embed" />
 }
+@* No page and not unavailable: the slug was unknown; NavigationManager.NotFound()
+   already ran in OnParametersSetAsync and renders the not-found page. *@

Elternbeirat.Web/Features/Pages/ContentPage.razor.cs

@@ -2,29 +2,41 @@ using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
 using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
-using Microsoft.AspNetCore.Http;
 
 namespace Elternbeirat.Web.Features.Pages;
 
 public partial class ContentPage
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load page '{slug}' from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, string slug, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Error,
+        Message = "Could not load page '{Slug}' from PocketBase; content source is unavailable.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        string slug,
+        Exception exception);
 
     [Parameter]
-    public string Slug { get; set; } = "";
+    public string Slug { get; set; } = string.Empty;
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<ContentPage> Logger { get; set; } = default!;
+    private ILogger<ContentPage> Logger { get; set; } = null!;
+
+    [Inject]
+    private NavigationManager Navigation { get; set; } = null!;
 
     [CascadingParameter]
     private HttpContext? HttpContext { get; set; }
 
     private Page? _page;
 
+    // Set when the content source could not be reached or read. The markup then
+    // shows a "temporarily unavailable" note instead of a not-found page, matching
+    // the 503 this sets on the response.
+    private bool _unavailable;
+
     // The page body rendered from Markdown to HTML, ready to emit as a
     // MarkupString in the markup.
     private MarkupString Body => (MarkupString)Markdown.ToHtml(_page?.Body);
@@ -33,24 +45,23 @@ public partial class ContentPage
     {
         try
         {
-            var pages = await PocketBase.GetPagesAsync();
+            var pages = await PocketBase.GetPagesAsync(HttpContext?.RequestAborted ?? CancellationToken.None);
             _page = pages.FirstOrDefault(
-                p => string.Equals(p.Slug, Slug, StringComparison.OrdinalIgnoreCase));
+                page => string.Equals(page.Slug, Slug, StringComparison.OrdinalIgnoreCase));
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> treat as "not found" rather than a 500. The
-            // 404 branch below serves the friendly /not-found page.
-            LogLoadFailed(Logger, Slug, ex);
-            _page = null;
+            // The site works, its data store is down: 503, not 404.
+            LogSourceUnavailable(Logger, Slug, exception);
+            _unavailable = true;
+            SourceUnavailable.SetStatus(HttpContext);
+            return;
         }
 
-        // Unknown slug (or unreachable source) -> 404, so
-        // UseStatusCodePagesWithReExecute serves the /not-found page instead of an
-        // empty 200 response.
-        if (_page is null && HttpContext is not null)
+        if (_page is null)
         {
-            HttpContext.Response.StatusCode = StatusCodes.Status404NotFound;
+            // The source answered, but there is no page with this slug: a genuine 404.
+            Navigation.NotFound();
         }
     }
 }

Elternbeirat.Web/Features/Pages/ContentPage.razor.css

@@ -0,0 +1,11 @@
+/* A content page is one reading column: its text, boxes and card grids all stop at
+   42rem (app.css). Left-aligned in the 72rem layout that column left a wide empty
+   strip on the right of a desktop screen; centred, the empty space splits evenly and
+   the page sits balanced under the header. Title and body share the column, so they
+   keep one left edge. The children inside keep margin 0 and simply fill it. */
+h1,
+article,
+p {
+    max-width: 42rem;
+    margin-inline: auto;
+}

Elternbeirat.Web/Features/Posts/PostCard.razor

@@ -0,0 +1,13 @@
+@*
+    One post as a card that links to the post: date, title, a teaser from the body
+    and "Weiterlesen". The arrow is a hint where the card leads; it does not move.
+*@
+<a class="@CssClass" href="@Href">
+    <span class="post-date"><Icon Name="calendar" Size="16" /><PostDate Value="Value.Date" /></span>
+    <span class="post-title">@Value.Title</span>
+    @if (Teaser.Length > 0)
+    {
+        <span class="post-teaser">@Teaser</span>
+    }
+    <span class="post-more">Weiterlesen <Icon Name="arrow-right" Size="16" /></span>
+</a>

Elternbeirat.Web/Features/Posts/PostCard.razor.cs

@@ -0,0 +1,46 @@
+using Elternbeirat.Contracts;
+using Elternbeirat.Web.Shared;
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Features.Posts;
+
+/// <summary>
+///     Renders one post as a card linking to the post, with date, title and teaser.
+/// </summary>
+/// <remarks>
+///     Shared by the posts page and the home-page posts embed, so both show posts the
+///     same way. The teaser comes from the body (<see cref="Markdown.Teaser"/>): posts
+///     have no summary field of their own.
+/// </remarks>
+/// <seealso cref="PostDate"/>
+public partial class PostCard
+{
+    /// <summary>
+    ///     The post to show.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public Post Value { get; set; } = null!;
+
+    /// <summary>
+    ///     <see langword="true"/> for the large card that opens the posts page (the
+    ///     newest post); <see langword="false"/> for a regular card.
+    /// </summary>
+    [Parameter]
+    public bool Featured { get; set; }
+
+    /// <summary>
+    ///     The card's classes; the featured card adds its modifier.
+    /// </summary>
+    private string CssClass => Featured ? "post-card post-card-featured" : "post-card";
+
+    /// <summary>
+    ///     The address of the post.
+    /// </summary>
+    private string Href => $"/posts/{Value.Slug}";
+
+    /// <summary>
+    ///     The teaser text; empty if the body has no paragraph text.
+    /// </summary>
+    private string Teaser => Markdown.Teaser(Value.Body);
+}

Elternbeirat.Web/Features/Posts/PostCard.razor.css

@@ -0,0 +1,88 @@
+/* The post card: a white surface with a green stripe on the left as the eye's
+   anchor. The stripe is a border, so it follows the rounded corners. The whole card
+   is the link and fills its list cell, so the cards of a row are equally tall.
+   Hover = stronger shadow, nothing moves. */
+.post-card {
+    box-sizing: border-box;
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-2);
+    height: 100%;
+    padding: var(--space-3) var(--space-4);
+    border-left: 4px solid var(--color-accent);
+    border-radius: var(--radius);
+    background: var(--color-bg);
+    box-shadow: var(--shadow);
+    color: var(--color-text);
+    text-decoration: none;
+    transition: box-shadow var(--transition);
+}
+
+.post-card:hover {
+    box-shadow: var(--shadow-hover);
+    color: var(--color-text);
+}
+
+/* Icon and date on one line. The icon belongs to Icon's own scope, so it is
+   reached through ::deep. */
+.post-date {
+    display: flex;
+    align-items: center;
+    gap: var(--space-1);
+}
+
+.post-date ::deep .icon {
+    color: var(--color-accent-dark);
+}
+
+.post-title {
+    color: var(--color-brand);
+    font-size: 1.15rem;
+    font-weight: 700;
+    line-height: 1.3;
+}
+
+/* Cut after three lines, so cards of a row stay close in height whatever the
+   editor wrote. The featured card lifts the limit (see below). */
+.post-teaser {
+    display: -webkit-box;
+    -webkit-box-orient: vertical;
+    -webkit-line-clamp: 3;
+    line-clamp: 3;
+    overflow: hidden;
+    font-size: 0.95rem;
+}
+
+/* margin-top: auto pushes the link line to the bottom, so it sits on one level
+   across a row of cards with teasers of different length. */
+.post-more {
+    display: inline-flex;
+    align-items: center;
+    gap: var(--space-1);
+    margin-top: auto;
+    padding-top: var(--space-1);
+    color: var(--color-brand);
+    font-size: 0.9rem;
+    font-weight: 700;
+}
+
+/* The newest post on the posts page: more room, a larger title and the full
+   teaser. */
+.post-card-featured {
+    padding: var(--space-4) var(--space-5);
+}
+
+.post-card-featured .post-title {
+    font-size: var(--font-size-h3);
+}
+
+@media (min-width: 48rem) {
+    .post-card-featured .post-title {
+        font-size: 1.5rem;
+    }
+}
+
+.post-card-featured .post-teaser {
+    display: block;
+    font-size: 1rem;
+}

Elternbeirat.Web/Features/Posts/PostDate.razor

@@ -0,0 +1,10 @@
+@*
+    Renders a post's calendar day as a <time> element: the ISO value in the
+    machine-readable datetime attribute, the German long form as visible text.
+    A <time> needs the day in both forms, so putting it here keeps every caller
+    to a single tag instead of repeating the two PostDateFormat calls.
+
+    The event counterpart is <EventDate>, which renders a point in time (with an
+    optional clock time and range) instead of a plain day.
+*@
+<time datetime="@PostDateFormat.Iso(Value)">@PostDateFormat.Display(Value)</time>

Elternbeirat.Web/Features/Posts/PostDate.razor.cs

@@ -0,0 +1,18 @@
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Features.Posts;
+
+/// <summary>
+///     Renders a post's publication day as a <c>&lt;time&gt;</c> element, in both a
+///     machine-readable and a visitor-facing form. The two formats come from
+///     <see cref="PostDateFormat"/>.
+/// </summary>
+public partial class PostDate
+{
+    /// <summary>
+    ///     The post's publication day.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public DateOnly Value { get; set; }
+}

Elternbeirat.Web/Features/Posts/PostDate.razor.css

@@ -0,0 +1,9 @@
+/* The date's own look: small and softened. Lives with the component so every
+   place that renders <PostDate> (list, home embed, detail page) shows the date
+   the same way. Positioning (margin to neighbours) is NOT set here -- that
+   depends on the surrounding context and is set by each caller. */
+time {
+    display: block;
+    color: var(--color-text-soft);   /* token, so it adapts in dark mode */
+    font-size: 0.85rem;
+}

Elternbeirat.Web/Features/Posts/PostDateFormat.cs

@@ -0,0 +1,55 @@
+using System.Globalization;
+using Elternbeirat.Web.Shared;
+
+namespace Elternbeirat.Web.Features.Posts;
+
+/// <summary>
+///     Formats a post's calendar day for display and for a machine-readable
+///     <c>datetime</c> attribute.
+/// </summary>
+/// <remarks>
+///     Posts carry a <see cref="DateOnly"/> (a calendar day, no time of day). Their
+///     <c>&lt;time&gt;</c> element needs the day twice: once in German for the
+///     visitor (<see cref="Display"/>) and once as ISO 8601 for the <c>datetime</c>
+///     attribute (<see cref="Iso"/>). Keeping both here means the two never drift
+///     apart and the markup no longer repeats the same <c>ToString</c> pair.
+///     <para>
+///         This is the post counterpart to
+///         <see cref="Events.EventDateFormat"/>, which formats a
+///         <see cref="System.DateTime"/> range instead.
+///     </para>
+/// </remarks>
+public static class PostDateFormat
+{
+    /// <summary>
+    ///     Display format for a calendar day, e.g. <c>8. Oktober 2026</c>. The
+    ///     weekday is omitted, unlike the event format.
+    /// </summary>
+    private const string LongDate = "d. MMMM yyyy";
+
+    /// <summary>
+    ///     Formats a calendar day in German for a visitor to read.
+    /// </summary>
+    /// <param name="value">
+    ///     The calendar day to format.
+    /// </param>
+    /// <returns>
+    ///     The day as e.g. <c>8. Oktober 2026</c>, using German month names.
+    /// </returns>
+    public static string Display(DateOnly value)
+        => value.ToString(LongDate, Cultures.German);
+
+    /// <summary>
+    ///     Formats a calendar day as ISO 8601 (<c>yyyy-MM-dd</c>) for a
+    ///     machine-readable <c>datetime</c> attribute.
+    /// </summary>
+    /// <param name="value">
+    ///     The calendar day to format.
+    /// </param>
+    /// <returns>
+    ///     The day as e.g. <c>2026-10-08</c>, culture-invariant so the value is
+    ///     stable regardless of the request's culture.
+    /// </returns>
+    public static string Iso(DateOnly value)
+        => value.ToString("yyyy-MM-dd", CultureInfo.InvariantCulture);
+}

Elternbeirat.Web/Features/Posts/PostDetail.razor

@@ -1,19 +1,46 @@
 @page "/posts/{Slug}"
 
-@if (_post is null)
+@if (_unavailable)
 {
-    <PageTitle>Nicht gefunden</PageTitle>
+    <PageTitle>Vorübergehend nicht erreichbar</PageTitle>
+    <p>Der Beitrag ist gerade nicht erreichbar. Bitte später erneut versuchen.</p>
 }
-else
+else if (_post is not null)
 {
     <PageTitle>@_post.Title</PageTitle>
-    <article>
-        <p class="post-meta">
-            <a href="/posts">&larr; Alle Beiträge</a>
-            <time datetime="@_post.Date.ToString("yyyy-MM-dd")">
-                @_post.Date.ToString("d. MMMM yyyy", German)
-            </time>
-        </p>
-        @Body
+    @* A plain link, not a <nav>: one link is no navigation block, and an unlabelled
+       second <nav> next to the main menu would only add noise for screen readers. *@
+    <a class="btn btn-quiet" href="/posts"><Icon Name="arrow-left" Size="18" />Alle Beiträge</a>
+
+    <article class="post">
+        <header class="post-header">
+            <p class="post-meta"><Icon Name="calendar" Size="16" /><PostDate Value="_post.Date" /></p>
+            <h1>@_post.Title</h1>
+        </header>
+        <div class="markdown-body post-body">@Body</div>
     </article>
+
+    @if (_neighbors.Previous is not null || _neighbors.Next is not null)
+    {
+        @* Older post on the left, newer on the right, like a timeline. A missing side
+           leaves its cell empty, so the remaining link keeps its place. *@
+        <nav class="post-pager" aria-label="Weitere Beiträge">
+            @if (_neighbors.Previous is { } previous)
+            {
+                <a class="post-pager-link post-pager-previous" href="/posts/@previous.Slug" rel="prev">
+                    <span class="post-pager-label"><Icon Name="arrow-left" Size="16" />Vorheriger Beitrag</span>
+                    <span class="post-pager-title">@previous.Title</span>
+                </a>
+            }
+            @if (_neighbors.Next is { } next)
+            {
+                <a class="post-pager-link post-pager-next" href="/posts/@next.Slug" rel="next">
+                    <span class="post-pager-label">Nächster Beitrag<Icon Name="arrow-right" Size="16" /></span>
+                    <span class="post-pager-title">@next.Title</span>
+                </a>
+            }
+        </nav>
+    }
 }
+@* No post and not unavailable: the slug was unknown; NavigationManager.NotFound()
+   already ran in OnParametersSetAsync and renders the not-found page. *@

Elternbeirat.Web/Features/Posts/PostDetail.razor.cs

@@ -1,33 +1,46 @@
-using System.Globalization;
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
 using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
-using Microsoft.AspNetCore.Http;
 
 namespace Elternbeirat.Web.Features.Posts;
 
 public partial class PostDetail
 {
-    private static readonly CultureInfo German = CultureInfo.GetCultureInfo("de-DE");
-
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load post '{slug}' from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, string slug, Exception exception);
+    [LoggerMessage(
+        Level = LogLevel.Error,
+        Message = "Could not load post '{Slug}' from PocketBase; content source is unavailable.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        string slug,
+        Exception exception);
 
     [Parameter]
-    public string Slug { get; set; } = "";
+    public string Slug { get; set; } = string.Empty;
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<PostDetail> Logger { get; set; } = default!;
+    private ILogger<PostDetail> Logger { get; set; } = null!;
+
+    [Inject]
+    private NavigationManager Navigation { get; set; } = null!;
 
     [CascadingParameter]
     private HttpContext? HttpContext { get; set; }
 
     private Post? _post;
 
+    // The older and newer post for the "Vorheriger / Nächster Beitrag" links at the
+    // end; both empty until loaded or when the post stands alone.
+    private PostNeighbors _neighbors = new(null, null);
+
+    // Set when the content source could not be reached or read. The markup then
+    // shows a "temporarily unavailable" note instead of a not-found page, matching
+    // the 503 this sets on the response.
+    private bool _unavailable;
+
     // The post body rendered from Markdown to HTML, ready to emit as a
     // MarkupString in the markup.
     private MarkupString Body => (MarkupString)Markdown.ToHtml(_post?.Body);
@@ -36,24 +49,24 @@ public partial class PostDetail
     {
         try
         {
-            var posts = await PocketBase.GetPostsAsync();
+            var posts = await PocketBase.GetPostsAsync(HttpContext?.RequestAborted ?? CancellationToken.None);
             _post = posts.FirstOrDefault(
-                p => string.Equals(p.Slug, Slug, StringComparison.OrdinalIgnoreCase));
+                post => string.Equals(post.Slug, Slug, StringComparison.OrdinalIgnoreCase));
+            _neighbors = PostNeighbors.Of(posts, Slug);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> treat as "not found" rather than a 500. The
-            // 404 branch below serves the friendly /not-found page.
-            LogLoadFailed(Logger, Slug, ex);
-            _post = null;
+            // The site works, its data store is down: 503, not 404.
+            LogSourceUnavailable(Logger, Slug, exception);
+            _unavailable = true;
+            SourceUnavailable.SetStatus(HttpContext);
+            return;
         }
 
-        // Unknown slug (or unreachable source) -> 404, so
-        // UseStatusCodePagesWithReExecute serves the /not-found page instead of an
-        // empty 200 response.
-        if (_post is null && HttpContext is not null)
+        if (_post is null)
         {
-            HttpContext.Response.StatusCode = StatusCodes.Status404NotFound;
+            // The source answered, but there is no post with this slug: a genuine 404.
+            Navigation.NotFound();
         }
     }
 }

Elternbeirat.Web/Features/Posts/PostDetail.razor.css

@@ -1,13 +1,116 @@
-.post-meta {
-    display: flex;
-    justify-content: space-between;
-    align-items: baseline;
-    gap: 1rem;
-    margin-bottom: 1rem;
+/* The article: the site's centred 42rem reading column (as on a content page,
+   ContentPage.razor.css) with generous leading, so a long post reads like a page,
+   not like a form. Everything inside follows this width -- the global 42rem cap on
+   paragraphs, lists and boxes is lifted here, so nothing stops short of the column
+   (the post's own leading makes the text a touch wider than elsewhere). */
+.post {
+    max-width: 42rem;
+    margin: var(--space-4) auto 0;
+    line-height: 1.75;
 }
 
-.post-meta time {
-    display: block;
-    color: #777;
+/* The back link is an inline button, which margin: auto cannot centre. A left
+   margin of half the free space puts it on the column's left edge instead, and
+   max() keeps it at 0 once the screen is narrower than the column. */
+.btn-quiet {
+    margin-left: max(0px, (100% - 42rem) / 2);
+}
+
+.post ::deep :is(p, ul, ol, blockquote, .aufruf, .hinweis) {
+    max-width: none;
+}
+
+/* Date above the title as a quiet meta line, with the same calendar icon as on the
+   post cards. The title follows directly, so the gap between them stays small
+   (h1 carries no top margin globally). */
+.post-meta {
+    display: flex;
+    align-items: center;
+    gap: var(--space-1);
+    margin: 0 0 var(--space-2);
+    color: var(--color-text-soft);
+    font-size: 0.95rem;
+    font-weight: 600;
+}
+
+.post-meta ::deep .icon {
+    color: var(--color-accent-dark);
+}
+
+/* The first paragraph as the lead: larger and in the soft tone, so it reads as an
+   introduction. Pure CSS on the editor's Markdown -- if a post starts with a
+   heading or a list instead, there simply is no lead. Same text colour token as
+   the rest, so it keeps AA contrast in both schemes. */
+.post-body ::deep > p:first-child {
+    color: var(--color-text-soft);
+    font-size: 1.2rem;
+    line-height: 1.65;
+}
+
+/* Older/newer post at the end: two cards side by side, older on the left, newer on
+   the right. The grid keeps each in its column even if the other is missing. Hover
+   = border and shadow, nothing moves. */
+.post-pager {
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+    gap: var(--space-3);
+    max-width: 42rem;
+    margin: var(--space-6) auto 0;
+    padding-top: var(--space-4);
+    border-top: 1px solid var(--color-border);
+}
+
+.post-pager-link {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-1);
+    padding: var(--space-3) var(--space-4);
+    border: 1px solid var(--color-border);
+    border-radius: var(--radius);
+    background: var(--color-bg);
+    color: var(--color-text);
+    text-decoration: none;
+    transition: box-shadow var(--transition), border-color var(--transition);
+}
+
+.post-pager-link:hover {
+    border-color: var(--color-brand);
+    box-shadow: var(--shadow-hover);
+    color: var(--color-text);
+}
+
+.post-pager-next {
+    grid-column: 2;
+    text-align: right;
+}
+
+.post-pager-label {
+    display: inline-flex;
+    align-items: center;
+    gap: var(--space-1);
+    color: var(--color-text-soft);
     font-size: 0.85rem;
+    font-weight: 700;
+}
+
+.post-pager-next .post-pager-label {
+    align-self: flex-end;
+}
+
+.post-pager-title {
+    color: var(--color-brand);
+    font-weight: 700;
+    line-height: 1.3;
+}
+
+/* On a phone the two cards stack: a half-width card would squeeze a long title
+   into a narrow column. Older first, as in the wide layout. */
+@media (max-width: 40rem) {
+    .post-pager {
+        grid-template-columns: 1fr;
+    }
+
+    .post-pager-next {
+        grid-column: 1;
+    }
 }

Elternbeirat.Web/Features/Posts/PostList.razor

@@ -1,24 +1,36 @@
 @page "/posts"
 
-<PageTitle>Beiträge</PageTitle>
+@{
+    // Heading and intro come from the "posts" page record; fall back to a sensible
+    // default only if that record is missing, so the page still renders.
+    var title = _page?.Title ?? "Beiträge";
+}
 
-<h1>Beiträge</h1>
+<PageTitle>@title</PageTitle>
 
-@if (_posts.Count == 0)
+<h1>@title</h1>
+
+@if (_page is not null && !string.IsNullOrWhiteSpace(_page.Body))
+{
+    <article class="markdown-body">@Body</article>
+}
+
+@if (_unavailable)
+{
+    <p>Die Beiträge sind gerade nicht erreichbar. Bitte später erneut versuchen.</p>
+}
+else if (_posts.Count == 0)
 {
     <p>Zurzeit gibt es keine Beiträge.</p>
 }
 else
 {
-    <ul class="post-list">
-        @foreach (var post in _posts)
+    @* The newest post (GetPostsAsync sorts newest first) opens the page as a large
+       card across the full width; the rest follow in the grid. *@
+    <ul class="post-list post-list-grid">
+        @for (var i = 0; i < _posts.Count; i++)
         {
-            <li>
-                <a href="@($"/posts/{post.Slug}")">@post.Title</a>
-                <time datetime="@post.Date.ToString("yyyy-MM-dd")">
-                    @post.Date.ToString("d. MMMM yyyy", German)
-                </time>
-            </li>
+            <li class="@(i == 0 ? "post-list-featured" : null)"><PostCard Value="_posts[i]" Featured="i == 0" /></li>
         }
     </ul>
 }

Elternbeirat.Web/Features/Posts/PostList.razor.cs

@@ -1,36 +1,60 @@
-using System.Globalization;
 using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
+using Elternbeirat.Web.Shared;
 using Microsoft.AspNetCore.Components;
 
 namespace Elternbeirat.Web.Features.Posts;
 
 public partial class PostList
 {
-    [LoggerMessage(Level = LogLevel.Warning, Message = "Could not load posts from PocketBase.")]
-    private static partial void LogLoadFailed(ILogger logger, Exception exception);
-
-    private static readonly CultureInfo German = CultureInfo.GetCultureInfo("de-DE");
+    [LoggerMessage(
+        Level = LogLevel.Error,
+        Message = "Could not load posts from PocketBase; content source is unavailable.")]
+    private static partial void LogSourceUnavailable(
+        ILogger logger,
+        Exception exception);
 
     [Inject]
-    private PocketBaseClient PocketBase { get; set; } = default!;
+    private PocketBaseClient PocketBase { get; set; } = null!;
 
     [Inject]
-    private ILogger<PostList> Logger { get; set; } = default!;
+    private ILogger<PostList> Logger { get; set; } = null!;
+
+    [CascadingParameter]
+    private HttpContext? HttpContext { get; set; }
+
+    // The "posts" page record supplies the heading and intro text, so an editor owns
+    // them in PocketBase like every other page, instead of them being hard-coded here.
+    // Null until loaded, or when no such page exists.
+    private Page? _page;
 
     private IReadOnlyList<Post> _posts = [];
 
+    // Set when the content source could not be reached or read. The markup then
+    // shows a "temporarily unavailable" note instead of "no posts", matching the
+    // 503 this sets on the response.
+    private bool _unavailable;
+
+    // The page body rendered from Markdown to HTML, ready to emit as a MarkupString.
+    private MarkupString Body => (MarkupString)Markdown.ToHtml(_page?.Body);
+
     protected override async Task OnInitializedAsync()
     {
         try
         {
-            _posts = await PocketBase.GetPostsAsync();
+            var token = HttpContext?.RequestAborted ?? CancellationToken.None;
+            var pages = await PocketBase.GetPagesAsync(token);
+            _page = pages.FirstOrDefault(
+                page => string.Equals(page.Slug, "posts", StringComparison.OrdinalIgnoreCase));
+            _posts = await PocketBase.GetPostsAsync(token);
         }
-        catch (HttpRequestException ex)
+        catch (PocketBaseUnavailableException exception)
         {
-            // Source unreachable -> show an empty list instead of a 500. The page
-            // stays up; the "keine Beiträge" note is rendered.
-            LogLoadFailed(Logger, ex);
+            // An empty list would claim there are no posts. The site works, its
+            // data store is down: 503 and an honest note.
+            LogSourceUnavailable(Logger, exception);
+            _unavailable = true;
+            SourceUnavailable.SetStatus(HttpContext);
         }
     }
 }

Elternbeirat.Web/Features/Posts/PostList.razor.css

@@ -1,20 +1,29 @@
+/* The card is PostCard and the base list grid lives in the global app.css, shared
+   with the home-page embed. Only the page's two-column layout is here: one column
+   on a phone, two from tablet width, with the newest post across both. */
+@media (min-width: 48rem) {
+    .post-list-grid {
+        grid-template-columns: repeat(2, minmax(0, 1fr));
+    }
+
+    .post-list-featured {
+        grid-column: 1 / -1;
+    }
+}
+
+/* Same centred 42rem reading column as a content page (ContentPage.razor.css), so
+   every page of the site shares one column under the header. Two cards still fit
+   side by side in it. */
+h1,
+article,
+p,
 .post-list {
-    list-style: none;
-    padding: 0;
+    max-width: 42rem;
+    margin-inline: auto;
 }
 
-.post-list li {
-    padding: 0.75rem 0;
-    border-bottom: 1px solid #eee;
-}
-
-.post-list a {
-    font-size: 1.1rem;
-    text-decoration: none;
-}
-
-.post-list time {
-    display: block;
-    color: #777;
-    font-size: 0.85rem;
+/* The intro's last paragraph drops its margin (app.css), so the first card would
+   sit right under the text; this gives it the same air as between sections. */
+article {
+    margin-bottom: var(--space-5);
 }

Elternbeirat.Web/Features/Posts/PostNeighbors.cs

@@ -0,0 +1,65 @@
+using Elternbeirat.Contracts;
+
+namespace Elternbeirat.Web.Features.Posts;
+
+/// <summary>
+///     The posts next to a given post in time: the one published before it and the
+///     one published after it.
+/// </summary>
+/// <param name="Previous">
+///     The older post, or <see langword="null"/> if the post is the oldest.
+/// </param>
+/// <param name="Next">
+///     The newer post, or <see langword="null"/> if the post is the newest.
+/// </param>
+/// <remarks>
+///     "Previous" and "next" follow time, as a reader moving through the news would:
+///     "Vorheriger Beitrag" is the older one, "Nächster Beitrag" the newer one. The
+///     list order of the posts page (newest first) is the other way round, which is
+///     why the direction is pinned down here instead of being left to the markup.
+/// </remarks>
+/// <seealso cref="PostDetail"/>
+public sealed record PostNeighbors(Post? Previous, Post? Next)
+{
+    /// <summary>
+    ///     Finds the neighbours of the post with the given slug.
+    /// </summary>
+    /// <param name="posts">
+    ///     All public posts, newest first, as <c>PocketBaseClient.GetPostsAsync</c>
+    ///     returns them.
+    /// </param>
+    /// <param name="slug">The slug of the post being shown.</param>
+    /// <returns>
+    ///     The older and the newer post. Both are <see langword="null"/> if the slug is
+    ///     not in the list, or if it is the only post.
+    /// </returns>
+    /// <remarks>
+    ///     The slug is compared case-insensitively, like the route lookup in
+    ///     <see cref="PostDetail"/>, so a page reached as <c>/posts/New-Board</c> still
+    ///     gets its neighbours.
+    /// </remarks>
+    /// <example>
+    ///     <code>
+    ///         // posts = [March, February, January] (newest first)
+    ///         var neighbors = PostNeighbors.Of(posts, "february");
+    ///         // neighbors.Previous is January, neighbors.Next is March
+    ///     </code>
+    /// </example>
+    public static PostNeighbors Of(IReadOnlyList<Post> posts, string slug) =>
+        IndexOf(posts, slug) is var index and >= 0
+            ? new PostNeighbors(
+                Previous: index + 1 < posts.Count ? posts[index + 1] : null,
+                Next: index > 0 ? posts[index - 1] : null)
+            : new PostNeighbors(null, null);
+
+    /// <summary>
+    ///     The position of the post with <paramref name="slug"/>, or <c>-1</c>.
+    /// </summary>
+    private static int IndexOf(IReadOnlyList<Post> posts, string slug) =>
+        posts
+            .Select((post, index) => (post, index))
+            .FirstOrDefault(
+                entry => string.Equals(entry.post.Slug, slug, StringComparison.OrdinalIgnoreCase),
+                (null!, -1))
+            .index;
+}

Elternbeirat.Web/Program.cs

@@ -2,61 +2,103 @@ using Elternbeirat.Contracts;
 using Elternbeirat.PocketBase;
 using Elternbeirat.Web.Components;
 using Elternbeirat.Web.Features.Events;
+using Elternbeirat.Web.Shared;
+using Microsoft.AspNetCore.Components.Endpoints;
 using Microsoft.AspNetCore.HttpOverrides;
 
 var builder = WebApplication.CreateBuilder(args);
 
-// Add services to the container.
 builder.Services.AddRazorComponents();
 
+// "Today" for upcoming events comes from this clock, not DateTime.Today, so the
+// smoke tests can swap in a fixed date and check the pages before and after an event.
+builder.Services.AddSingleton(TimeProvider.System);
+
 // The typed client reads content from PocketBase over its REST API. The base URL
-// comes from configuration: appsettings for local dev, the PocketBase__BaseUrl
-// env var on the server (see compose.yaml).
+// comes from config: appsettings for local dev, the PocketBase__BaseUrl env var
+// on the server (see compose.yaml).
 var pocketBaseUrl = builder.Configuration["PocketBase:BaseUrl"]
-    ?? throw new InvalidOperationException("PocketBase:BaseUrl is not configured.");
+                    ?? throw new InvalidOperationException("PocketBase:BaseUrl is not configured.");
 builder.Services.AddHttpClient<PocketBaseClient>(client =>
-    client.BaseAddress = new Uri(pocketBaseUrl));
+{
+    client.BaseAddress = new Uri(pocketBaseUrl);
+    // Every page waits for PocketBase. The default wait is 100 seconds, so if
+    // PocketBase is down the page would hang that long. 5 seconds fails fast instead.
+    client.Timeout = TimeSpan.FromSeconds(5);
+});
+
+// Shared by all requests, so the maintenance gate below asks PocketBase at most once
+// every few seconds rather than on every page view.
+builder.Services.AddSingleton<PocketBaseHealthCache>();
 
 var app = builder.Build();
 
-// NPM terminates TLS and is the only way to reach the container (no port
-// mapping in production). Without UseForwardedHeaders the app sees every request
-// as HTTP and with the proxy IP instead of the client IP.
-// KnownNetworks/KnownProxies are deliberately empty because only NPM reaches
-// the container.
-app.UseForwardedHeaders(new ForwardedHeadersOptions
-{
-    ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto,
-    KnownIPNetworks = { },
-    KnownProxies = { }
-});
+// NPM sits in front of the app and handles HTTPS. Without this line the app would
+// think every request is plain HTTP and would see NPM's IP, not the visitor's.
+// KnownNetworks/KnownProxies are left empty on purpose: only NPM reaches the app.
+app.UseForwardedHeaders(
+    new ForwardedHeadersOptions
+    {
+        ForwardedHeaders = ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto
+    });
 
-// Configure the HTTP request pipeline.
-if (!app.Environment.IsDevelopment())
+if (app.Environment.IsDevelopment() is false)
 {
     app.UseExceptionHandler("/Error", createScopeForErrors: true);
-    // No UseHsts() and no UseHttpsRedirection(): NPM sets HSTS and terminates
-    // TLS. Both here would create a redirect loop behind the proxy.
+    // No UseHsts() and no UseHttpsRedirection() here: NPM already handles HTTPS.
+    // Adding them behind NPM would send the browser into a redirect loop.
 }
 
-app.UseStatusCodePagesWithReExecute("/not-found", createScopeForStatusCodePages: true);
-
+// Don't add UseStatusCodePagesWithReExecute here. Blazor already shows its own
+// not-found page. That middleware would catch *every* error code, so when PocketBase
+// is down (a 503) it would wrongly show "not found" instead of our own message.
 app.UseAntiforgery();
 
+// Maintenance gate: while PocketBase is down, every page gets the static
+// maintenance.html with 503 instead of a half-empty page (the menu comes from
+// PocketBase too). Routing has already picked the endpoint at this point, so the gate
+// covers exactly the Razor component pages: /health, the calendar feeds, the static
+// assets (incl. maintenance.html and its font) are not components and answer for
+// themselves. A new endpoint is thus left alone unless it is a page. The health
+// result is cached (PocketBaseHealthCache), so the page may come back a few seconds
+// after PocketBase does. Retry-After tells well-behaved clients and crawlers when to
+// come back; no-store keeps the 503 page out of any cache.
+app.Use(async (context, next) =>
+{
+    var isPage = context.GetEndpoint()?.Metadata.GetMetadata<ComponentTypeMetadata>() is not null;
+    var services = context.RequestServices;
+    if (!isPage
+        || await services.GetRequiredService<PocketBaseHealthCache>().IsHealthyAsync(
+            services.GetRequiredService<PocketBaseClient>().IsHealthyAsync,
+            context.RequestAborted))
+    {
+        await next(context);
+        return;
+    }
+
+    context.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
+    context.Response.Headers.RetryAfter = "60";
+    context.Response.Headers.CacheControl = "no-store";
+    context.Response.ContentType = "text/html; charset=utf-8";
+    await context.Response.SendFileAsync(
+        app.Environment.WebRootFileProvider.GetFileInfo("maintenance.html"),
+        context.RequestAborted);
+});
+
 app.MapStaticAssets();
 app.MapRazorComponents<App>();
 
-// Subscribable calendar feed of all events. A minimal API endpoint rather than
-// a Razor page because it returns text/calendar, not HTML. Reads from PocketBase
-// per request; an unreachable source yields an empty calendar, not a 500.
-app.MapGet("/events.ics", async (PocketBaseClient pocketBase) =>
+// Calendar feed people can subscribe to. It returns calendar data, not a web page,
+// so it is a plain endpoint, not a Razor page. If PocketBase is down it returns an
+// empty calendar rather than an error.
+app.MapGet("/events.ics", async (PocketBaseClient pocketBase, CancellationToken token) =>
 {
     IReadOnlyList<Event> events;
     try
     {
-        events = await pocketBase.GetEventsAsync();
+        events = await pocketBase.GetEventsAsync(token);
     }
-    catch (HttpRequestException)
+    catch (PocketBaseUnavailableException)
     {
         events = [];
     }
@@ -64,4 +106,38 @@ app.MapGet("/events.ics", async (PocketBaseClient pocketBase) =>
     return Results.Text(IcsCalendar.Build(events), "text/calendar; charset=utf-8");
 });
 
+// One event as a calendar file ("In Kalender übernehmen" on the events page): the
+// same calendar as the feed, holding just this event. Unlike the feed it does not
+// fall back to an empty calendar when PocketBase is down -- a file without the event
+// the visitor clicked would be a silent failure, so it answers 503. An unknown or
+// non-public id is a 404.
+app.MapGet("/events/{id}.ics", async (string id, PocketBaseClient pocketBase, CancellationToken token) =>
+{
+    IReadOnlyList<Event> events;
+    try
+    {
+        events = await pocketBase.GetEventsAsync(token);
+    }
+    catch (PocketBaseUnavailableException)
+    {
+        return Results.StatusCode(StatusCodes.Status503ServiceUnavailable);
+    }
+
+    return events.FirstOrDefault(@event => @event.Id == id) is { } match
+        ? Results.Text(IcsCalendar.Build([match]), "text/calendar; charset=utf-8")
+        : Results.NotFound();
+});
+
+// Status page for an outside monitor (Uptime Kuma) to check. One check tells all
+// three states apart: no reply = the app is down, 503 = the app runs but PocketBase
+// is down, 200 = both are fine. It talks to PocketBase directly, not through the
+// page-rendering code, so it can still report when that code is the thing failing.
+app.MapGet("/health", async (PocketBaseClient pocketBase, CancellationToken token) =>
+    await pocketBase.IsHealthyAsync(token)
+        ? Results.Text("healthy", "text/plain; charset=utf-8")
+        : Results.Text(
+            "PocketBase unreachable",
+            "text/plain; charset=utf-8",
+            statusCode: StatusCodes.Status503ServiceUnavailable));
+
 app.Run();

Elternbeirat.Web/Shared/BerlinClock.cs

@@ -0,0 +1,33 @@
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     Tells the current calendar day as people at the school see it.
+/// </summary>
+/// <remarks>
+///     The container's clock runs in UTC, so <see cref="DateTime.Today"/> would flip to
+///     the next day at 01:00 or 02:00 Berlin time, and an event shortly after midnight
+///     would count as past for an hour or two. Event times are Berlin wall-clock
+///     values (see <c>LocalDateTimeConverter</c>), so "today" has to be a Berlin day
+///     too.
+///     <para>
+///         The time comes from an injected <see cref="TimeProvider"/>, not the system
+///         clock, so tests can pin "today" and check what a page shows before and after
+///         an event.
+///     </para>
+/// </remarks>
+public static class BerlinClock
+{
+    /// <summary>
+    ///     IANA id; resolves on every platform .NET supports, Windows included.
+    /// </summary>
+    private static readonly TimeZoneInfo Berlin =
+        TimeZoneInfo.FindSystemTimeZoneById("Europe/Berlin");
+
+    /// <summary>
+    ///     Returns today's date in Berlin.
+    /// </summary>
+    /// <param name="time">The clock to read, usually <see cref="TimeProvider.System"/>.</param>
+    /// <returns>The current Berlin calendar day.</returns>
+    public static DateOnly Today(TimeProvider time) =>
+        DateOnly.FromDateTime(TimeZoneInfo.ConvertTime(time.GetUtcNow(), Berlin).DateTime);
+}

Elternbeirat.Web/Shared/Cultures.cs

@@ -0,0 +1,21 @@
+using System.Globalization;
+
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     Shared <see cref="CultureInfo"/> instances used to format visitor-facing
+///     text.
+/// </summary>
+/// <remarks>
+///     Kept in one place so every component renders month and weekday names the
+///     same way, rather than each holding its own <c>de-DE</c> lookup. This is only
+///     for display text; machine-readable output (e.g. an HTML <c>datetime</c>
+///     attribute) uses <see cref="CultureInfo.InvariantCulture"/> instead.
+/// </remarks>
+internal static class Cultures
+{
+    /// <summary>
+    ///     German culture, for the month and weekday names visitors read.
+    /// </summary>
+    public static readonly CultureInfo German = CultureInfo.GetCultureInfo("de-DE");
+}

Elternbeirat.Web/Shared/EventFormat.cs

@@ -1,48 +0,0 @@
-using System.Globalization;
-using Elternbeirat.Contracts;
-
-namespace Elternbeirat.Web.Shared;
-
-/// <summary>
-/// Formats an <see cref="Event"/>'s date range for display in German. Shared by
-/// the full event list and the home-page events embed so both render dates the
-/// same way.
-/// </summary>
-public static class EventFormat
-{
-    private static readonly CultureInfo German = CultureInfo.GetCultureInfo("de-DE");
-
-    // An event counts as all-day when its start carries no wall-clock time
-    // (00:00); PocketBase has no separate flag.
-    private static bool HasTime(Event ev) => ev.Start.TimeOfDay != TimeSpan.Zero;
-
-    /// <summary>
-    /// Formats the entry's date range: a single day, a date with a time, or a
-    /// span across days.
-    /// </summary>
-    public static string Range(Event ev)
-    {
-        var start = HasTime(ev)
-            ? ev.Start.ToString("dddd, d. MMMM yyyy, HH:mm", German) + " Uhr"
-            : ev.Start.ToString("dddd, d. MMMM yyyy", German);
-
-        if (ev.End is not { } end)
-        {
-            return start;
-        }
-
-        // Same day: append just the end time. Different days: append the full
-        // end date.
-        if (end.Date == ev.Start.Date)
-        {
-            return HasTime(ev)
-                ? start + "–" + end.ToString("HH:mm", German) + " Uhr"
-                : start;
-        }
-
-        var endText = HasTime(ev)
-            ? end.ToString("d. MMMM yyyy, HH:mm", German) + " Uhr"
-            : end.ToString("d. MMMM yyyy", German);
-        return start + " – " + endText;
-    }
-}

Elternbeirat.Web/Shared/Icon.razor

@@ -0,0 +1,13 @@
+@*
+    Renders one icon from IconSet as inline SVG. Purely decorative: aria-hidden hides
+    it from screen readers (the text next to it carries the meaning) and
+    focusable="false" keeps old Edge/IE from putting it in the tab order. The stroke
+    is currentColor, so the icon takes the colour of the surrounding text. An unknown
+    name renders nothing at all.
+*@
+@if (_markup is not null)
+{
+    <svg class="icon" width="@Size" height="@Size"
+         viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"
+         stroke-linecap="round" stroke-linejoin="round" aria-hidden="true" focusable="false">@_markup</svg>
+}

Elternbeirat.Web/Shared/Icon.razor.cs

@@ -0,0 +1,46 @@
+using Microsoft.AspNetCore.Components;
+
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     Renders a decorative line icon from <see cref="IconSet"/> as inline SVG.
+/// </summary>
+/// <remarks>
+///     Inline SVG, not an <c>&lt;img&gt;</c> or icon font: no extra request, nothing
+///     from a third-party host, and the icon follows the text colour (including dark
+///     mode) through <c>currentColor</c>. The icon is hidden from assistive technology,
+///     so it must never be the only carrier of meaning.
+/// </remarks>
+/// <example>
+///     <code>
+///         &lt;Icon Name="map-pin" /&gt; Aula
+///         &lt;Icon Name="calendar" Size="16" /&gt;
+///     </code>
+/// </example>
+/// <seealso cref="IconSet"/>
+public partial class Icon
+{
+    /// <summary>
+    ///     The inner SVG markup of the current icon, or <see langword="null"/> when the
+    ///     name is unknown and nothing should render.
+    /// </summary>
+    private MarkupString? _markup;
+
+    /// <summary>
+    ///     The icon name, e.g. <c>calendar</c>; see <see cref="IconSet"/> for the set.
+    /// </summary>
+    [Parameter]
+    [EditorRequired]
+    public string Name { get; set; } = "";
+
+    /// <summary>
+    ///     Width and height in CSS pixels. Defaults to <c>20</c>, which sits well next
+    ///     to body text.
+    /// </summary>
+    [Parameter]
+    public int Size { get; set; } = 20;
+
+    /// <inheritdoc/>
+    protected override void OnParametersSet() =>
+        _markup = IconSet.Find(Name) is { } markup ? new MarkupString(markup) : null;
+}

Elternbeirat.Web/Shared/IconSet.cs

@@ -0,0 +1,86 @@
+using System.Collections.Frozen;
+
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     The fixed set of line icons the site can show, keyed by name.
+/// </summary>
+/// <remarks>
+///     The icons are inlined as SVG markup instead of being loaded from an icon font or
+///     a CDN: the site loads nothing from third-party hosts (see <c>docs/recht.md</c>),
+///     and inline SVG needs no extra request and inherits the text colour.
+///     <para>
+///         Source: Lucide (<c>lucide.dev</c>), ISC license; the icons derived from
+///         Feather (<c>calendar</c>, <c>clock</c>, <c>download</c>,
+///         <c>external-link</c>, <c>help-circle</c>, <c>info</c>, <c>arrow-right</c>,
+///         <c>arrow-left</c>)
+///         are MIT, Copyright (c) 2013-present Cole Bemis. Both licenses only ask that
+///         the notice travels with the copy, which this comment does. Only the inner
+///         elements are stored; <see cref="Icon"/> supplies the shared
+///         <c>&lt;svg&gt;</c> wrapper (24x24 view box, 2px round stroke).
+///     </para>
+///     <para>
+///         Lucide renamed <c>help-circle</c> to <c>circle-question-mark</c>; the old
+///         name is kept here because it is the one the design work refers to.
+///     </para>
+/// </remarks>
+/// <seealso cref="Icon"/>
+public static class IconSet
+{
+    /// <summary>
+    ///     Inner SVG markup per icon name. Ordinal keys: names are code identifiers,
+    ///     not visitor text, so <c>Calendar</c> is deliberately not <c>calendar</c>.
+    /// </summary>
+    private static readonly FrozenDictionary<string, string> Icons =
+        new Dictionary<string, string>
+        {
+            ["calendar"] =
+                """<path d="M8 2v3"/><path d="M16 2v3"/><rect x="3" y="3" width="18" height="18" rx="2"/><path d="M3 9h18"/>""",
+            ["calendar-plus"] =
+                """<path d="M16 18h6"/><path d="M16 2v3"/><path d="M19 15v6"/><path d="M21 11.5V5a2 2 0 00-2-2H5a2 2 0 00-2 2v14a2 2 0 002 2h8.3"/><path d="M3 9h18"/><path d="M8 2v3"/>""",
+            ["clock"] =
+                """<circle cx="12" cy="12" r="10"/><path d="M12 6v6l4 2"/>""",
+            ["map-pin"] =
+                """<path d="M20 10c0 4.993-5.539 10.193-7.399 11.799a1 1 0 0 1-1.202 0C9.539 20.193 4 14.993 4 10a8 8 0 0 1 16 0"/><circle cx="12" cy="10" r="3"/>""",
+            ["file-text"] =
+                """<path d="M6 22a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h8a2.4 2.4 0 0 1 1.704.706l3.588 3.588A2.4 2.4 0 0 1 20 8v12a2 2 0 0 1-2 2z"/><path d="M14 2v5a1 1 0 0 0 1 1h5"/><path d="M10 9H8"/><path d="M16 13H8"/><path d="M16 17H8"/>""",
+            ["download"] =
+                """<path d="M12 15V3"/><path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/><path d="m7 10 5 5 5-5"/>""",
+            ["mail"] =
+                """<path d="m22 7-8.991 5.727a2 2 0 0 1-2.009 0L2 7"/><rect x="2" y="4" width="20" height="16" rx="2"/>""",
+            ["users"] =
+                """<path d="M16 21v-2a4 4 0 0 0-4-4H6a4 4 0 0 0-4 4v2"/><path d="M16 3.128a4 4 0 0 1 0 7.744"/><path d="M22 21v-2a4 4 0 0 0-3-3.87"/><circle cx="9" cy="7" r="4"/>""",
+            ["heart-handshake"] =
+                """<path d="M19.414 14.414C21 12.828 22 11.5 22 9.5a5.5 5.5 0 0 0-9.591-3.676.6.6 0 0 1-.818.001A5.5 5.5 0 0 0 2 9.5c0 2.3 1.5 4 3 5.5l5.535 5.362a2 2 0 0 0 2.879.052 2.12 2.12 0 0 0-.004-3 2.124 2.124 0 1 0 3-3 2.124 2.124 0 0 0 3.004 0 2 2 0 0 0 0-2.828l-1.881-1.882a2.41 2.41 0 0 0-3.409 0l-1.71 1.71a2 2 0 0 1-2.828 0 2 2 0 0 1 0-2.828l2.823-2.762"/>""",
+            ["help-circle"] =
+                """<circle cx="12" cy="12" r="10"/><path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"/><path d="M12 17h.01"/>""",
+            ["newspaper"] =
+                """<path d="M15 18h-5"/><path d="M18 14h-8"/><path d="M4 22h16a2 2 0 0 0 2-2V4a2 2 0 0 0-2-2H8a2 2 0 0 0-2 2v16a2 2 0 0 1-4 0v-9a2 2 0 0 1 2-2h2"/><rect width="8" height="4" x="10" y="6" rx="1"/>""",
+            ["arrow-left"] =
+                """<path d="m12 19-7-7 7-7"/><path d="M19 12H5"/>""",
+            ["arrow-right"] =
+                """<path d="M5 12h14"/><path d="m12 5 7 7-7 7"/>""",
+            ["external-link"] =
+                """<path d="M15 3h6v6"/><path d="M10 14 21 3"/><path d="M18 13v6a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2V8a2 2 0 0 1 2-2h6"/>""",
+            ["info"] =
+                """<circle cx="12" cy="12" r="10"/><path d="M12 16v-4"/><path d="M12 8h.01"/>""",
+        }.ToFrozenDictionary(StringComparer.Ordinal);
+
+    /// <summary>
+    ///     Looks up the inner SVG markup of an icon.
+    /// </summary>
+    /// <param name="name">
+    ///     The icon name, e.g. <c>calendar</c> or <c>map-pin</c>. Case-sensitive.
+    /// </param>
+    /// <returns>
+    ///     The SVG child elements (paths, circles, rects) to place inside an
+    ///     <c>&lt;svg&gt;</c>, or <see langword="null"/> if <paramref name="name"/> is
+    ///     <see langword="null"/> or not part of the set.
+    /// </returns>
+    /// <remarks>
+    ///     An unknown name yields <see langword="null"/> rather than an exception, so a
+    ///     typo costs a missing decoration, never a broken page.
+    /// </remarks>
+    public static string? Find(string? name) =>
+        name is null ? null : Icons.GetValueOrDefault(name);
+}

Elternbeirat.Web/Shared/Markdown.cs

@@ -1,23 +1,355 @@
+using System.Text;
+using System.Text.RegularExpressions;
 using Markdig;
+using Markdig.Extensions.CustomContainers;
+using Markdig.Renderers.Html;
+using Markdig.Syntax;
+using Markdig.Syntax.Inlines;
 
 namespace Elternbeirat.Web.Shared;
 
 /// <summary>
-/// Renders Markdown to HTML. Content now comes from PocketBase as raw Markdown
-/// (the <c>body</c> field), so the pages render it at display time instead of
-/// reading pre-rendered HTML from files.
+///     Renders the editors' Markdown (the <c>body</c>, <c>intro</c> and <c>answer</c>
+///     fields from PocketBase) to the HTML the pages show.
 /// </summary>
-public static class Markdown
+/// <remarks>
+///     The pipeline is CommonMark plus exactly two extensions, each there for a reason
+///     an editor can see:
+///     <list type="bullet">
+///         <item>
+///             <description>
+///                 <b>Custom containers</b> (<c>::: name</c> … <c>:::</c>) turn a block
+///                 into <c>&lt;div class="name"&gt;</c>. That is how editors use the
+///                 design blocks (<c>kennzahlen</c>, <c>aufruf</c>, <c>kacheln</c>,
+///                 <c>hinweis</c>, <c>team</c>) without writing HTML. An unknown name
+///                 just yields a div without styling, so a typo never breaks a page.
+///             </description>
+///         </item>
+///         <item>
+///             <description>
+///                 <b>Pipe tables</b>: plain CommonMark has no tables at all, so without
+///                 this the table styles in <c>app.css</c> could never apply.
+///             </description>
+///         </item>
+///     </list>
+///     <para>
+///         Raw HTML in the Markdown is <b>escaped</b>, not passed through
+///         (<see cref="MarkdownPipelineBuilder"/>'s <c>DisableHtml</c>). The result is
+///         rendered as a <c>MarkupString</c>, so a passed-through <c>&lt;script&gt;</c>
+///         would run in the visitor's browser, and the privacy text promises that no
+///         program code runs there. Editors style pages with the blocks instead.
+///     </para>
+///     <para>
+///         After parsing, a paragraph (or list item) that consists of nothing but one
+///         link gets the class <see cref="LoneLinkClass"/>. Pure CSS cannot tell
+///         "a link alone on its line" from "a link inside a sentence" (selectors ignore
+///         the text around an element), but the stylesheet needs exactly that to show a
+///         lone <c>mailto:</c> link as a button and a lone PDF link as a file card.
+///     </para>
+///     <para>
+///         The list items of a <c>::: team</c> block become person cards
+///         (<see cref="TeamMember"/>): the initials avatar and the split into name,
+///         role and duties need the text itself, which CSS cannot read.
+///     </para>
+/// </remarks>
+/// <seealso cref="IconSet"/>
+/// <seealso cref="TeamMember"/>
+public static partial class Markdown
 {
-    private static readonly MarkdownPipeline Pipeline =
-        new MarkdownPipelineBuilder().Build();
+    /// <summary>
+    ///     The class marking a paragraph or list item whose only content is one link.
+    ///     <c>app.css</c> keys the mail button and the PDF card off it.
+    /// </summary>
+    public const string LoneLinkClass = "lone-link";
 
     /// <summary>
-    /// Converts a Markdown string to HTML. Returns an empty string for
-    /// <c>null</c> or empty input, so callers can bind the result directly.
+    ///     The default teaser length: about two lines on a card, enough to say what a
+    ///     post is about without turning the list into a wall of text.
     /// </summary>
+    public const int TeaserLength = 160;
+
+    private static readonly MarkdownPipeline Pipeline =
+        new MarkdownPipelineBuilder()
+            .UseCustomContainers()
+            .UsePipeTables()
+            .DisableHtml()
+            .Build();
+
+    /// <summary>
+    ///     Converts a Markdown string to HTML.
+    /// </summary>
+    /// <param name="markdown">The editor's Markdown; may be <see langword="null"/>.</param>
+    /// <returns>
+    ///     The rendered HTML, or an empty string for <see langword="null"/> or empty
+    ///     input, so callers can bind the result directly.
+    /// </returns>
+    /// <example>
+    ///     <code>
+    ///         Markdown.ToHtml("::: hinweis\nBitte vormerken.\n:::");
+    ///         // &lt;div class="hinweis"&gt;&lt;p&gt;Bitte vormerken.&lt;/p&gt;&lt;/div&gt;
+    ///     </code>
+    /// </example>
     public static string ToHtml(string? markdown) =>
-        string.IsNullOrEmpty(markdown)
+        string.IsNullOrEmpty(markdown) ? "" : Render(Parse(markdown));
+
+    /// <summary>
+    ///     Extracts the first sentence of a Markdown text as plain text, e.g. as the
+    ///     short description on a home page tile.
+    /// </summary>
+    /// <param name="markdown">The editor's Markdown; may be <see langword="null"/>.</param>
+    /// <returns>
+    ///     The first sentence of the first top-level paragraph, with all Markdown
+    ///     removed, whitespace collapsed and a trailing colon dropped, or an empty
+    ///     string when there is no such paragraph (empty body, or only headings, lists
+    ///     and blocks).
+    /// </returns>
+    /// <remarks>
+    ///     Only top-level paragraphs count: a heading repeats the title, and the text in
+    ///     a list or a <c>:::</c> block is rarely a sentence that describes the page.
+    ///     <para>
+    ///         A sentence ends at <c>.</c>, <c>!</c> or <c>?</c> followed by a space or
+    ///         the end. A period after a single letter or a number does not count, so
+    ///         <c>z. B.</c> and <c>13. November</c> do not cut the sentence short. A
+    ///         longer abbreviation such as <c>bzw.</c> still does; that costs the rest
+    ///         of a teaser, never the page.
+    ///     </para>
+    ///     <para>
+    ///         A paragraph that leads into a list often ends in <c>:</c> without a
+    ///         period; as a teaser the colon would point at a list that is not there.
+    ///         The sentence is returned whole: a long one is cut by the tile's CSS,
+    ///         which knows the space it has, not by a character count.
+    ///     </para>
+    /// </remarks>
+    /// <example>
+    ///     <code>
+    ///         Markdown.FirstSentence("# Vorstand\n\nWir sind **sieben** Eltern. Mehr unten.");
+    ///         // "Wir sind sieben Eltern."
+    ///     </code>
+    /// </example>
+    public static string FirstSentence(string? markdown) =>
+        string.IsNullOrWhiteSpace(markdown)
             ? ""
-            : Markdig.Markdown.ToHtml(markdown, Pipeline);
+            : Parse(markdown).OfType<ParagraphBlock>().FirstOrDefault()?.Inline is { } inline
+                ? UpToSentenceEnd(PlainText(inline)).TrimEnd(':', ' ')
+                : "";
+
+    /// <summary>
+    ///     Builds a short plain-text teaser from a Markdown text, e.g. for a post card.
+    /// </summary>
+    /// <param name="markdown">The editor's Markdown; may be <see langword="null"/>.</param>
+    /// <param name="maxLength">
+    ///     The longest teaser, in characters, before the ellipsis. Defaults to
+    ///     <see cref="TeaserLength"/>.
+    /// </param>
+    /// <returns>
+    ///     The text of all paragraphs (including those in lists, quotes and <c>:::</c>
+    ///     blocks), with all Markdown removed and whitespace collapsed. A longer text is
+    ///     cut at the last word boundary within <paramref name="maxLength"/> and ends
+    ///     in <c>…</c>. An empty string when there is no paragraph text at all.
+    /// </returns>
+    /// <exception cref="ArgumentOutOfRangeException">
+    ///     <paramref name="maxLength"/> is zero or negative.
+    /// </exception>
+    /// <remarks>
+    ///     Headings are skipped: on a card the title already heads the teaser. Unlike
+    ///     <see cref="FirstSentence"/> the teaser does not stop at the first sentence,
+    ///     because a post often opens with a short line ("Liebe Eltern,") that says
+    ///     nothing on its own.
+    ///     <para>
+    ///         Punctuation left dangling at the cut (<c>,</c>, <c>.</c>, <c>:</c> …) is
+    ///         dropped, so the teaser never ends in <c>,…</c>.
+    ///     </para>
+    /// </remarks>
+    /// <example>
+    ///     <code>
+    ///         Markdown.Teaser("## Rückblick\n\nDer **Basar** war ein voller Erfolg.", 20);
+    ///         // "Der Basar war ein…"
+    ///     </code>
+    /// </example>
+    public static string Teaser(string? markdown, int maxLength = TeaserLength) =>
+        maxLength <= 0
+            ? throw new ArgumentOutOfRangeException(nameof(maxLength), maxLength, "The teaser needs room for at least one character.")
+            : string.IsNullOrWhiteSpace(markdown)
+                ? ""
+                : Shorten(
+                    string.Join(
+                        ' ',
+                        Parse(markdown)
+                            .Descendants<ParagraphBlock>()
+                            .Select(paragraph => paragraph.Inline is { } inline ? PlainText(inline) : "")
+                            .Where(text => text.Length > 0)),
+                    maxLength);
+
+    /// <summary>
+    ///     Parses Markdown with the site's pipeline, for callers that take the document
+    ///     apart before rendering it (see <see cref="Render"/>).
+    /// </summary>
+    /// <param name="markdown">The editor's Markdown.</param>
+    /// <returns>The parsed document.</returns>
+    internal static MarkdownDocument Parse(string markdown) =>
+        Markdig.Markdown.Parse(markdown, Pipeline);
+
+    /// <summary>
+    ///     Renders a document from <see cref="Parse"/> to HTML, building the team cards
+    ///     and marking lone links on the way, exactly as <see cref="ToHtml"/> does.
+    /// </summary>
+    /// <param name="document">The parsed document; changed in place.</param>
+    /// <returns>The rendered HTML.</returns>
+    internal static string Render(MarkdownDocument document) =>
+        Markdig.Markdown.ToHtml(MarkLoneLinks(BuildTeamCards(document)), Pipeline);
+
+    /// <summary>
+    ///     Flattens inline Markdown to the text a reader sees: emphasis and link
+    ///     markup dropped, link text kept, images left out, whitespace collapsed.
+    /// </summary>
+    /// <param name="inlines">
+    ///     The inline content, e.g. of a paragraph or heading, or a part of it.
+    /// </param>
+    /// <returns>The visible text, trimmed.</returns>
+    internal static string PlainText(IEnumerable<Inline> inlines) =>
+        Whitespace().Replace(inlines.Aggregate(new StringBuilder(), AppendText).ToString(), " ").Trim();
+
+    /// <summary>
+    ///     Whether an inline carries no visible content (whitespace or a line break).
+    /// </summary>
+    /// <param name="inline">The inline to inspect.</param>
+    /// <returns>
+    ///     <see langword="true"/> if it can be ignored when looking for links that stand
+    ///     alone in a paragraph.
+    /// </returns>
+    internal static bool IsBlank(Inline inline) =>
+        inline switch
+        {
+            LineBreakInline => true,
+            LiteralInline literal => literal.Content.IsEmptyOrWhitespace(),
+            _ => false,
+        };
+
+    /// <summary>
+    ///     Appends the visible text of an inline and its children.
+    /// </summary>
+    /// <param name="text">The builder to append to.</param>
+    /// <param name="inline">The inline to flatten.</param>
+    /// <returns>The same <paramref name="text"/>, for chaining.</returns>
+    private static StringBuilder AppendText(StringBuilder text, Inline inline) =>
+        inline switch
+        {
+            LiteralInline literal => text.Append(literal.Content.ToString()),
+            CodeInline code => text.Append(code.Content),
+            HtmlEntityInline entity => text.Append(entity.Transcoded.ToString()),
+            AutolinkInline autolink => text.Append(autolink.Url),
+            LineBreakInline => text.Append(' '),
+            LinkInline { IsImage: true } => text,
+            ContainerInline container => container.Aggregate(text, AppendText),
+            _ => text,
+        };
+
+    /// <summary>
+    ///     Cuts a text after its first sentence.
+    /// </summary>
+    /// <param name="text">Plain text.</param>
+    /// <returns>
+    ///     The first sentence including its end mark, or the whole text if it has none.
+    /// </returns>
+    private static string UpToSentenceEnd(string text) =>
+        SentenceEnd().Match(text) is { Success: true } end ? text[..(end.Index + 1)] : text;
+
+    /// <summary>
+    ///     Cuts a text to a word boundary and marks the cut.
+    /// </summary>
+    /// <param name="text">Plain text.</param>
+    /// <param name="maxLength">The longest result before the ellipsis.</param>
+    /// <returns>
+    ///     The text unchanged if it fits; otherwise everything up to the last space
+    ///     within <paramref name="maxLength"/>, trailing punctuation removed, plus
+    ///     <c>…</c>. A single word longer than <paramref name="maxLength"/> is cut hard.
+    /// </returns>
+    /// <remarks>
+    ///     The space is searched one character past the limit: if the text breaks
+    ///     exactly at <paramref name="maxLength"/>, the last whole word still fits.
+    /// </remarks>
+    private static string Shorten(string text, int maxLength) =>
+        text.Length <= maxLength
+            ? text
+            : (text[..(maxLength + 1)].LastIndexOf(' ') is var space and > 0 ? text[..space] : text[..maxLength])
+              .TrimEnd(' ', ',', ';', ':', '.', '-', '–') + "…";
+
+    /// <summary>
+    ///     Matches the end mark of a sentence: <c>.</c>, <c>!</c> or <c>?</c> before a
+    ///     space or the end, unless it follows a lone letter (<c>z.</c>) or a number
+    ///     (<c>13.</c>).
+    /// </summary>
+    [GeneratedRegex(@"(?<!\b\p{L}|\b\d+)[.!?](?=\s|$)")]
+    private static partial Regex SentenceEnd();
+
+    /// <summary>
+    ///     Matches a run of whitespace, collapsed to one space in plain text.
+    /// </summary>
+    [GeneratedRegex(@"\s+")]
+    private static partial Regex Whitespace();
+
+    /// <summary>
+    ///     Turns the list items of every <c>::: team</c> block into person cards.
+    /// </summary>
+    /// <param name="document">The parsed document; changed in place.</param>
+    /// <returns>The same <paramref name="document"/>, for chaining.</returns>
+    /// <remarks>
+    ///     Only lists directly in the block count; a nested list inside a card stays a
+    ///     list. <c>::: team gross</c> adds the class
+    ///     <see cref="TeamMember.LargeModifier"/> to the block, because Markdig only
+    ///     turns the block name into a class, not the words after it.
+    /// </remarks>
+    private static MarkdownDocument BuildTeamCards(MarkdownDocument document)
+    {
+        foreach (var team in document.Descendants<CustomContainer>().Where(TeamMember.IsTeam).ToList())
+        {
+            if (TeamMember.IsLarge(team))
+            {
+                team.GetAttributes().AddClass(TeamMember.LargeModifier);
+            }
+
+            foreach (var item in team.OfType<ListBlock>().SelectMany(list => list.OfType<ListItemBlock>()))
+            {
+                TeamMember.ToCard(item);
+            }
+        }
+
+        return document;
+    }
+
+    /// <summary>
+    ///     Adds <see cref="LoneLinkClass"/> to every paragraph that holds nothing but
+    ///     one link.
+    /// </summary>
+    /// <param name="document">The parsed document; changed in place.</param>
+    /// <returns>The same <paramref name="document"/>, for chaining.</returns>
+    /// <remarks>
+    ///     Inside a list item the class goes on the item, not the paragraph: in a tight
+    ///     list Markdig writes no <c>&lt;p&gt;</c> at all, so a class on the paragraph
+    ///     would be silently dropped.
+    /// </remarks>
+    private static MarkdownDocument MarkLoneLinks(MarkdownDocument document)
+    {
+        foreach (var paragraph in document.Descendants<ParagraphBlock>().Where(IsLoneLink))
+        {
+            MarkdownObject target = paragraph.Parent is ListItemBlock { Count: 1 } item ? item : paragraph;
+            target.GetAttributes().AddClass(LoneLinkClass);
+        }
+
+        return document;
+    }
+
+    /// <summary>
+    ///     Whether a paragraph's content is exactly one link, ignoring surrounding
+    ///     whitespace and line breaks.
+    /// </summary>
+    /// <param name="paragraph">The paragraph to inspect.</param>
+    /// <returns>
+    ///     <see langword="true"/> for one link (inline <c>[text](url)</c> or an
+    ///     autolink <c>&lt;url&gt;</c>, but not an image) and nothing else.
+    /// </returns>
+    private static bool IsLoneLink(ParagraphBlock paragraph) =>
+        paragraph.Inline?
+            .Where(inline => !IsBlank(inline))
+            .ToList() is [LinkInline { IsImage: false } or AutolinkInline];
 }

Elternbeirat.Web/Shared/PocketBaseHealthCache.cs

@@ -0,0 +1,73 @@
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     Remembers for a few seconds whether PocketBase answered its health check, so the
+///     maintenance gate does not probe PocketBase on every page request.
+/// </summary>
+/// <param name="time">
+///     The clock that decides when a result is stale; injected so tests can step past
+///     <see cref="Lifetime"/> without waiting.
+/// </param>
+/// <remarks>
+///     The gate in <c>Program.cs</c> asks this cache before rendering any page and serves
+///     the static <c>maintenance.html</c> with 503 while the answer is "unhealthy". A
+///     failed check is kept just as long as a passed one: while PocketBase is down every
+///     probe would otherwise wait for the connection to fail again.
+///     <para>
+///         The price of caching is a short blind spot in both directions: after
+///         PocketBase fails, pages may still render for up to <see cref="Lifetime"/> (the
+///         components' own fallbacks cover that), and after it recovers the maintenance
+///         page may stay up for as long.
+///     </para>
+///     <para>
+///         Registered as a singleton. No lock: two requests that find the result stale at
+///         the same moment both probe, and the later answer wins -- harmless, and cheaper
+///         than making every request wait on one another.
+///     </para>
+/// </remarks>
+/// <example>
+///     <code>
+///         var healthy = await cache.IsHealthyAsync(pocketBase.IsHealthyAsync, context.RequestAborted);
+///     </code>
+/// </example>
+/// <seealso cref="PocketBase.PocketBaseClient.IsHealthyAsync"/>
+public sealed class PocketBaseHealthCache(TimeProvider time)
+{
+    /// <summary>
+    ///     How long a health check result is reused before PocketBase is asked again.
+    /// </summary>
+    public static readonly TimeSpan Lifetime = TimeSpan.FromSeconds(10);
+
+    // One reference, swapped as a whole, so a reader never sees the result of one
+    // check paired with the time of another.
+    private volatile Check? _last;
+
+    /// <summary>
+    ///     Returns the last known health of PocketBase, probing again once it is older
+    ///     than <see cref="Lifetime"/>.
+    /// </summary>
+    /// <param name="probe">
+    ///     The actual check, usually <see cref="PocketBase.PocketBaseClient.IsHealthyAsync"/>.
+    ///     Passed in rather than injected because the typed client is transient and this
+    ///     cache is a singleton.
+    /// </param>
+    /// <param name="token">Cancels the probe, e.g. when the visitor goes away.</param>
+    /// <returns>
+    ///     <see langword="true"/> if PocketBase answered its last check (or answers this
+    ///     one), otherwise <see langword="false"/>.
+    /// </returns>
+    /// <exception cref="OperationCanceledException">
+    ///     <paramref name="token"/> was cancelled during a probe; nothing is cached then.
+    /// </exception>
+    public async Task<bool> IsHealthyAsync(Func<CancellationToken, Task<bool>> probe, CancellationToken token) =>
+        _last is { } last && time.GetUtcNow() - last.At < Lifetime
+            ? last.Healthy
+            : (_last = new Check(await probe(token), time.GetUtcNow())).Healthy;
+
+    /// <summary>
+    ///     One health check result and when it was taken.
+    /// </summary>
+    /// <param name="Healthy">Whether PocketBase answered.</param>
+    /// <param name="At">When the answer came in.</param>
+    private sealed record Check(bool Healthy, DateTimeOffset At);
+}

Elternbeirat.Web/Shared/SourceUnavailable.cs

@@ -0,0 +1,30 @@
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     Marks the current response as HTTP 503 when the content source is down.
+/// </summary>
+/// <remarks>
+///     Several components handle a <see cref="PocketBase.PocketBaseUnavailableException"/>
+///     the same way: the site works but PocketBase does not, so the response is a
+///     503 and the component renders a "temporarily unavailable" note instead of
+///     empty content that would read as 200 "there is nothing here". This puts the
+///     status-setting in one place so those components do not each repeat it.
+/// </remarks>
+internal static class SourceUnavailable
+{
+    /// <summary>
+    ///     Sets the response status to 503 Service Unavailable, if there is a
+    ///     response to set it on.
+    /// </summary>
+    /// <param name="context">
+    ///     The current HTTP context, or <see langword="null"/> when the component
+    ///     renders outside a request (in which case there is nothing to do).
+    /// </param>
+    public static void SetStatus(HttpContext? context)
+    {
+        if (context is not null)
+        {
+            context.Response.StatusCode = StatusCodes.Status503ServiceUnavailable;
+        }
+    }
+}

Elternbeirat.Web/Shared/TeamMember.cs

@@ -0,0 +1,380 @@
+using System.Globalization;
+using Markdig.Extensions.CustomContainers;
+using Markdig.Renderers.Html;
+using Markdig.Syntax;
+using Markdig.Syntax.Inlines;
+
+namespace Elternbeirat.Web.Shared;
+
+/// <summary>
+///     One person in a <c>::: team</c> block, read from a list item that follows the
+///     convention the board page has always used.
+/// </summary>
+/// <param name="Name">The person's name: the bold start of the item.</param>
+/// <param name="Role">
+///     The role after the name, without its parentheses, or <see langword="null"/>
+///     when the item has none (most of the "Beisitz" members).
+/// </param>
+/// <param name="Duties">
+///     The responsibilities from the italic second line, split at commas; empty when
+///     there is no such line.
+/// </param>
+/// <remarks>
+///     The convention, one list item per person:
+///     <code>
+///         - **Maik Palm** (Vorsitzender)
+///           *Schulkonferenz, Mensarat, Homepage*
+///           Mitglied im Gesamtelternbeirat.
+///     </code>
+///     The bold name becomes the card's heading, the role a chip, every duty a small
+///     tag and any further line the note. Line breaks may be hard (two spaces) or soft:
+///     editors forget the two spaces, and the card should not depend on them.
+///     <para>
+///         The board stays Markdown in the page body on purpose: a dedicated
+///         collection would be cleaner, but there is no way yet to bring a schema
+///         change to production (Gitea #39). Reading the convention costs the editors
+///         nothing they do not already write.
+///     </para>
+///     <para>
+///         An item that does not start with a bold name is not an error: it becomes a
+///         plain card showing its text as written (<see cref="PlainCardClass"/>).
+///     </para>
+/// </remarks>
+/// <seealso cref="Markdown"/>
+public sealed record TeamMember(string Name, string? Role, IReadOnlyList<string> Duties)
+{
+    /// <summary>
+    ///     The block name editors type: <c>::: team</c>.
+    /// </summary>
+    public const string ContainerName = "team";
+
+    /// <summary>
+    ///     The modifier for the chair, <c>::: team gross</c>; also the class it adds to
+    ///     the block. The cards keep the shared raster; only the role chip is
+    ///     highlighted.
+    /// </summary>
+    /// <remarks>
+    ///     A word after the block name rather than a block of its own
+    ///     (<c>::: team-gross</c>): the block stays <c>team</c>, so a typo in the
+    ///     modifier only costs the highlight, never the whole grid. <c>groß</c> is
+    ///     accepted too; <c>gross</c> is the documented form because it types the same
+    ///     on every keyboard.
+    /// </remarks>
+    public const string LargeModifier = "gross";
+
+    /// <summary>
+    ///     The class on every card, i.e. on every list item in a <c>::: team</c> block.
+    /// </summary>
+    public const string CardClass = "team-card";
+
+    /// <summary>
+    ///     The extra class on a card whose item does not follow the convention.
+    /// </summary>
+    public const string PlainCardClass = "team-card-plain";
+
+    /// <summary>
+    ///     How many avatar colours there are; <c>app.css</c> defines
+    ///     <c>--color-avatar-1</c> (brand blue) and <c>--color-avatar-2</c> (brand
+    ///     green) to match.
+    /// </summary>
+    /// <remarks>
+    ///     Only the two brand colours: more hues made the board look busy and pulled it
+    ///     away from the IGMH palette.
+    /// </remarks>
+    public const int ColorCount = 2;
+
+    /// <summary>
+    ///     FNV-1a offset basis and prime (32 bit), see <see cref="Fnv"/>.
+    /// </summary>
+    private const uint FnvOffset = 2166136261;
+
+    private const uint FnvPrime = 16777619;
+
+    /// <summary>
+    ///     The letters on the avatar, see <see cref="InitialsOf"/>.
+    /// </summary>
+    public string Initials => InitialsOf(Name);
+
+    /// <summary>
+    ///     The avatar colour, from <c>1</c> to <see cref="ColorCount"/>, see
+    ///     <see cref="ColorOf"/>.
+    /// </summary>
+    public int Color => ColorOf(Name);
+
+    /// <summary>
+    ///     Builds the initials shown on a person's avatar.
+    /// </summary>
+    /// <param name="name">The person's name.</param>
+    /// <returns>
+    ///     The first letter of the first and of the last word, upper case; one letter
+    ///     for a single word; an empty string when the name holds no letter at all.
+    /// </returns>
+    /// <remarks>
+    ///     A double name counts as one word, so it adds one letter, not two: two
+    ///     letters are what fits the circle, and they are what people expect from a
+    ///     name like <c>Reger-Stilgenbauer</c>. Letters outside A–Z (<c>Ö</c>,
+    ///     <c>Ş</c>) are kept as they are, and leading punctuation is skipped.
+    /// </remarks>
+    /// <example>
+    ///     <code>
+    ///         TeamMember.InitialsOf("Jenny Reger-Stilgenbauer"); // "JR"
+    ///         TeamMember.InitialsOf("Özlem Ünal");               // "ÖÜ"
+    ///         TeamMember.InitialsOf("Isabell");                  // "I"
+    ///     </code>
+    /// </example>
+    public static string InitialsOf(string name) =>
+        name.Split((char[]?)null, StringSplitOptions.RemoveEmptyEntries) switch
+        {
+            [] => "",
+            [var only] => Initial(only),
+            [var first, .., var last] => Initial(first) + Initial(last),
+        };
+
+    /// <summary>
+    ///     Picks a person's avatar colour from the name.
+    /// </summary>
+    /// <param name="name">The person's name.</param>
+    /// <returns>A number from <c>1</c> to <see cref="ColorCount"/>.</returns>
+    /// <remarks>
+    ///     The same name always gets the same colour, on every request and after every
+    ///     restart, so a person does not change colour between visits. That is why this
+    ///     is a fixed hash (FNV-1a) and not <see cref="string.GetHashCode()"/>, which
+    ///     .NET randomises per process. Surrounding whitespace does not count.
+    ///     <para>
+    ///         FNV-1a alone spreads short names badly, so the MurmurHash3 finaliser
+    ///         (<see cref="Mix"/>) stirs all bits first. The colour is then taken from
+    ///         the <b>high</b> bits (multiply by <see cref="ColorCount"/>, keep the top
+    ///         32 bits) rather than a remainder, which would read only the low bits:
+    ///         with two colours that put eight of the ten board members on the same
+    ///         one.
+    ///     </para>
+    /// </remarks>
+    public static int ColorOf(string name) =>
+        (int)(((ulong)Mix(Fnv(name.Trim())) * ColorCount) >> 32) + 1;
+
+    /// <summary>
+    ///     Reads a person from the first paragraph of a list item.
+    /// </summary>
+    /// <param name="paragraph">The paragraph to read; not changed.</param>
+    /// <returns>
+    ///     The person and the inlines that form the note (everything after the name
+    ///     line and, if present, the duties line; possibly empty), or
+    ///     <see langword="null"/> when the paragraph does not start with a bold name.
+    /// </returns>
+    /// <remarks>
+    ///     The duties line is only recognised when it is nothing but one italic span;
+    ///     any other second line is part of the note, so no text is lost.
+    /// </remarks>
+    internal static (TeamMember Member, Inline[] Note)? Read(ParagraphBlock paragraph) =>
+        Lines(paragraph).ToArray() is [var head, .. var rest]
+        && Content(head) is [EmphasisInline { DelimiterCount: 2 } name, .. var role]
+        && Markdown.PlainText(name) is { Length: > 0 } nameText
+            ? rest is [var second, .. var after] && Content(second) is [EmphasisInline { DelimiterCount: 1 } duties]
+                ? (new TeamMember(nameText, RoleOf(role), DutiesOf(duties)), [.. after.SelectMany(line => line)])
+                : (new TeamMember(nameText, RoleOf(role), []), [.. rest.SelectMany(line => line)])
+            : null;
+
+    /// <summary>
+    ///     Turns one list item of a <c>::: team</c> block into a person card.
+    /// </summary>
+    /// <param name="item">The list item; changed in place.</param>
+    /// <remarks>
+    ///     The first paragraph is rebuilt from new inlines: raw HTML inlines for the
+    ///     tags and literal inlines for the text, so Markdig escapes everything the
+    ///     editor wrote. The note keeps its original inlines, so links and emphasis in it
+    ///     still render. Any further blocks in the item stay untouched below.
+    /// </remarks>
+    internal static void ToCard(ListItemBlock item)
+    {
+        var attributes = item.GetAttributes();
+        attributes.AddClass(CardClass);
+
+        if (item.FirstOrDefault() is ParagraphBlock { Inline: not null } paragraph && Read(paragraph) is { } card)
+        {
+            foreach (var inline in card.Note)
+            {
+                inline.Remove();
+            }
+
+            paragraph.Inline = card.Member.Head()
+                .Concat(card.Note.Length > 0 ? [Open("span", "team-note"), .. card.Note, Close("span")] : [])
+                .Aggregate(new ContainerInline(), (container, inline) => container.AppendChild(inline));
+        }
+        else
+        {
+            attributes.AddClass(PlainCardClass);
+        }
+    }
+
+    /// <summary>
+    ///     Whether a <c>:::</c> block is a team block.
+    /// </summary>
+    /// <param name="container">The block to inspect.</param>
+    /// <returns><see langword="true"/> for <c>::: team</c>, with or without modifier.</returns>
+    internal static bool IsTeam(CustomContainer container) =>
+        string.Equals(container.Info, ContainerName, StringComparison.OrdinalIgnoreCase);
+
+    /// <summary>
+    ///     Whether a team block asks for the chair highlight (<c>::: team gross</c>).
+    /// </summary>
+    /// <param name="container">The team block.</param>
+    /// <returns>
+    ///     <see langword="true"/> when one of the words after the name is
+    ///     <c>gross</c> or <c>groß</c>, in any case.
+    /// </returns>
+    internal static bool IsLarge(CustomContainer container) =>
+        (container.Arguments ?? "")
+            .Split((char[]?)null, StringSplitOptions.RemoveEmptyEntries)
+            .Any(word => word.Equals(LargeModifier, StringComparison.OrdinalIgnoreCase)
+                         || word.Equals("groß", StringComparison.OrdinalIgnoreCase));
+
+    /// <summary>
+    ///     The card's head: avatar, name, role chip and duty tags, as inlines.
+    /// </summary>
+    /// <returns>The inlines, in reading order; missing parts are left out.</returns>
+    /// <remarks>
+    ///     The avatar is hidden from screen readers: it only repeats the name next to
+    ///     it.
+    /// </remarks>
+    private Inline[] Head() =>
+    [
+        .. Initials is { Length: > 0 } initials
+            ? [Open("span", $"team-avatar team-avatar-{Color.ToString(CultureInfo.InvariantCulture)}", " aria-hidden=\"true\""), new LiteralInline(initials), Close("span")]
+            : Array.Empty<Inline>(),
+        .. Element("team-name", Name, "strong"),
+        .. Role is { } role ? Element("team-role", role) : [],
+        .. Duties.Count > 0
+            ? [Open("span", "team-duties"), .. Duties.SelectMany(Duty), Close("span")]
+            : Array.Empty<Inline>(),
+    ];
+
+    /// <summary>
+    ///     The 32-bit FNV-1a hash of a text's UTF-16 code units.
+    /// </summary>
+    /// <param name="text">The text.</param>
+    /// <returns>The hash.</returns>
+    private static uint Fnv(string text) =>
+        unchecked(text.Aggregate(FnvOffset, (hash, letter) => (hash ^ letter) * FnvPrime));
+
+    /// <summary>
+    ///     The MurmurHash3 finaliser (<c>fmix32</c>): spreads every input bit over all
+    ///     output bits.
+    /// </summary>
+    /// <param name="hash">The hash to mix.</param>
+    /// <returns>The mixed hash.</returns>
+    private static uint Mix(uint hash) =>
+        unchecked(XorShift(XorShift(XorShift(hash, 16) * 0x85EBCA6B, 13) * 0xC2B2AE35, 16));
+
+    /// <summary>
+    ///     Folds the high bits of a value into its low bits.
+    /// </summary>
+    /// <param name="value">The value.</param>
+    /// <param name="shift">How far to shift right before the XOR.</param>
+    /// <returns><paramref name="value"/> XOR <paramref name="value"/> shifted right.</returns>
+    private static uint XorShift(uint value, int shift) => value ^ (value >> shift);
+
+    /// <summary>
+    ///     One duty tag, led by a space so screen readers keep the tags apart.
+    /// </summary>
+    /// <param name="duty">The duty.</param>
+    /// <returns>The space and the tag.</returns>
+    private static Inline[] Duty(string duty) =>
+        [new LiteralInline(" "), .. Element("team-duty", duty)];
+
+    /// <summary>
+    ///     An element with escaped text inside.
+    /// </summary>
+    /// <param name="classes">The value of the class attribute; written as is.</param>
+    /// <param name="text">The text; escaped by Markdig on rendering.</param>
+    /// <param name="tag">The element name.</param>
+    /// <returns>Opening tag, text and closing tag.</returns>
+    private static Inline[] Element(string classes, string text, string tag = "span") =>
+        [Open(tag, classes), new LiteralInline(text), Close(tag)];
+
+    /// <summary>
+    ///     An opening tag with a class, as a raw HTML inline.
+    /// </summary>
+    /// <param name="tag">The element name.</param>
+    /// <param name="classes">The value of the class attribute; written as is.</param>
+    /// <param name="attributes">
+    ///     Further attributes, written as is after the class, with a leading space.
+    /// </param>
+    /// <returns>The tag.</returns>
+    /// <remarks>
+    ///     Only ever called with constants from this class, never with editor text:
+    ///     nothing here is escaped.
+    /// </remarks>
+    private static HtmlInline Open(string tag, string classes, string attributes = "") =>
+        new($"<{tag} class=\"{classes}\"{attributes}>");
+
+    /// <summary>
+    ///     A closing tag, as a raw HTML inline.
+    /// </summary>
+    /// <param name="tag">The element name.</param>
+    /// <returns>The tag.</returns>
+    private static HtmlInline Close(string tag) => new($"</{tag}>");
+
+    /// <summary>
+    ///     The first letter of a word, upper case.
+    /// </summary>
+    /// <param name="word">One word of a name.</param>
+    /// <returns>The letter, or an empty string if the word has none.</returns>
+    private static string Initial(string word) =>
+        word.FirstOrDefault(char.IsLetter) is var letter and not '\0'
+            ? letter.ToString().ToUpper(Cultures.German)
+            : "";
+
+    /// <summary>
+    ///     The text after the name, without separators and parentheses.
+    /// </summary>
+    /// <param name="inlines">The inlines after the bold name on the first line.</param>
+    /// <returns>The role, or <see langword="null"/> if nothing is left.</returns>
+    private static string? RoleOf(IEnumerable<Inline> inlines) =>
+        Markdown.PlainText(inlines).Trim(' ', ',', ':', ';', '-', '–') is var text
+        && (text.StartsWith('(') && text.EndsWith(')') ? text[1..^1].Trim() : text) is { Length: > 0 } role
+            ? role
+            : null;
+
+    /// <summary>
+    ///     Splits the italic duties line at its commas.
+    /// </summary>
+    /// <param name="duties">The italic span.</param>
+    /// <returns>The duties, trimmed, without empty entries.</returns>
+    private static string[] DutiesOf(EmphasisInline duties) =>
+        Markdown.PlainText(duties).Split(',', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
+
+    /// <summary>
+    ///     The inlines of a line that carry content: no whitespace, no line break.
+    /// </summary>
+    /// <param name="line">One line from <see cref="Lines"/>.</param>
+    /// <returns>The content inlines, in order.</returns>
+    private static Inline[] Content(IEnumerable<Inline> line) =>
+        [.. line.Where(inline => !Markdown.IsBlank(inline))];
+
+    /// <summary>
+    ///     Splits a paragraph's inlines into lines.
+    /// </summary>
+    /// <param name="paragraph">The paragraph.</param>
+    /// <returns>
+    ///     The lines; each keeps the line break that ends it, so the note can be moved
+    ///     with its breaks intact.
+    /// </returns>
+    private static IEnumerable<List<Inline>> Lines(ParagraphBlock paragraph)
+    {
+        var line = new List<Inline>();
+        foreach (var inline in paragraph.Inline?.ToList() ?? [])
+        {
+            line.Add(inline);
+            if (inline is LineBreakInline)
+            {
+                yield return line;
+                line = [];
+            }
+        }
+
+        if (line.Count > 0)
+        {
+            yield return line;
+        }
+    }
+}

Elternbeirat.Web/_Imports.razor

@@ -1,3 +1,4 @@
+@using System.Globalization
 @using System.Net.Http
 @using System.Net.Http.Json
 @using Microsoft.AspNetCore.Components.Forms