Merge pull request 'Add the design foundation: self-hosted Nunito, type scale, new tokens and an Icon component' (#51) from design/foundation into main

Reviewed-on: #51

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/RouteSmokeTests.cs

@@ -1,4 +1,5 @@
 using System.Net;
+using System.Text.RegularExpressions;
 using Microsoft.AspNetCore.Mvc.Testing;
 
 namespace Elternbeirat.Web.Tests;
@@ -15,7 +16,7 @@ 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.
@@ -158,6 +159,39 @@ public sealed class RouteSmokeTests : IDisposable
         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()
     {
@@ -187,4 +221,13 @@ public sealed class RouteSmokeTests : IDisposable
 
         response.StatusCode.ShouldBe(HttpStatusCode.ServiceUnavailable);
     }
+
+    /// <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();
 }

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 +1,83 @@
+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>)
+///         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-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/wwwroot/app.css

@@ -23,6 +23,20 @@
     --color-accent: #6db863;
     --color-accent-dark: #4f9247;
 
+    /* A whisper of the green for calm background areas (info boxes, highlighted
+       rows). Light enough that body text keeps its full contrast on top. */
+    --color-accent-tint: #eef7ec;
+
+    /* Warm yellow for the rare thing that must catch the eye (a "new" marker, a
+       deadline). Background only, never text -- yellow text is unreadable on white.
+       Used sparingly: if everything is highlighted, nothing is. */
+    --color-highlight: #fdf0c2;
+
+    /* Brand gradient for large surfaces (hero, banner): the header blue flowing into
+       the IGMH green. The green end is a deep shade (#3a7a3e, 5.2:1 with white),
+       not --color-accent, so white text stays readable across the whole sweep. */
+    --gradient-brand: linear-gradient(135deg, var(--color-header) 0%, #3a7a3e 100%);
+
     /* Headings. Its own token (not --color-brand) so headings and links can differ:
        in dark mode headings become a soft white while links keep the brand blue. */
     --color-heading: #2b6f9c;
@@ -48,14 +62,38 @@
     /* Rounded corners and a soft shadow for cards, matching the friendly tone. */
     --radius: 12px;
     --radius-sm: 6px;
+    --radius-lg: 20px;             /* large surfaces (hero, banner) look stiff with
+                                      the card radius at their size */
     --shadow: 0 1px 3px rgba(31, 58, 95, 0.08), 0 4px 12px rgba(31, 58, 95, 0.06);
     --shadow-hover: 0 2px 6px rgba(31, 58, 95, 0.12), 0 8px 20px rgba(31, 58, 95, 0.1);
+    --shadow-lg: 0 4px 12px rgba(31, 58, 95, 0.1), 0 16px 40px rgba(31, 58, 95, 0.12);
 
     /* One transition speed for hovers/focus across the site. */
     --transition: 0.15s ease;
 
-    /* Reading width, so long text lines never get uncomfortably wide. */
+    /* Width of the page frame (header, content, footer). Wide enough for card grids
-    --content-width: 60rem;
+       side by side; running text does not follow it -- paragraphs keep their own
+       reading width (see p below), so lines never get uncomfortably long. */
+    --content-width: 72rem;
+
+    /* Type. The site font is self-hosted (see @font-face below); the system stack
+       stays behind it, so text shows at once and only swaps when Nunito arrives. */
+    --font-family: "Nunito", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+
+    /* Type scale. h1 and h2 grow fluidly with the viewport (clamp: minimum, preferred
+       in vw, maximum) instead of jumping at a breakpoint, so a long German compound
+       word in a heading still fits a phone screen. Smaller sizes stay fixed: the
+       difference would not be visible. Body text sits a touch above the 1rem default
+       because Nunito's rounded letters read small. */
+    --font-size-h1: clamp(2rem, 1.6rem + 1.6vw, 2.75rem);
+    --font-size-h2: clamp(1.5rem, 1.35rem + 0.6vw, 1.75rem);
+    --font-size-h3: 1.2rem;
+    --font-size-body: 1.0625rem;
+
+    /* Headings: extra-bold for a friendly, confident lead, pulled slightly tighter
+       because heavy letters at large sizes otherwise look spaced out. */
+    --font-weight-heading: 800;
+    --letter-spacing-heading: -0.015em;
 }
 
 /* Dark mode: follows the visitor's OS setting automatically (prefers-color-scheme).
@@ -77,6 +115,13 @@
 
         --color-accent: #86c97d;       /* the IGMH green nudged brighter for dark */
         --color-accent-dark: #86c97d;  /* no darkening needed on a dark surface */
+        --color-accent-tint: #24332a;  /* a dark green-grey: tinted, but the soft
+                                          body text still reads at 5.5:1 */
+
+        --color-highlight: #3a3220;    /* the warm yellow as a deep amber -- a bright
+                                          yellow would glare on the dark page */
+
+        --gradient-brand: linear-gradient(135deg, var(--color-header) 0%, #2f6b33 100%);
 
         --color-heading: #c9ced6;      /* soft white, kept a step brighter than the
                                           body text so headings still lead the page */
@@ -91,12 +136,30 @@
 
         --shadow: 0 1px 3px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
         --shadow-hover: 0 2px 6px rgba(0, 0, 0, 0.5), 0 8px 20px rgba(0, 0, 0, 0.4);
+        --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.5), 0 16px 40px rgba(0, 0, 0, 0.45);
     }
 }
 
-/* Base styles. Self-hosted system font stack — no external fonts, for privacy. */
+/* Nunito, served from our own wwwroot -- never from Google Fonts, which would hand
+   every visitor's IP to Google (see docs/recht.md). One variable file covers every
+   weight from 400 to 800, so body, bold and headings cost a single ~36 KB request
+   instead of three static files. Subset to Latin incl. German and the common
+   European names (ä ö ü ß é ç ğ ş ł ...), € and German quotes; anything outside falls
+   back to the system font. No italic file: Markdown emphasis is rare, so the browser
+   slanting the upright face is worth the saved request. font-display: swap shows the
+   system font immediately and swaps once the file is there -- text never waits.
+   License: SIL OFL 1.1, see fonts/OFL.txt. */
+@font-face {
+    font-family: "Nunito";
+    src: url("fonts/nunito-latin-wght.woff2") format("woff2");
+    font-weight: 400 800;
+    font-style: normal;
+    font-display: swap;
+}
+
+/* Base styles. */
 html {
-    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    font-family: var(--font-family);
     line-height: 1.65;
     color: var(--color-text);
     /* Tell the browser we support both schemes, so form controls, scrollbars and
@@ -112,6 +175,7 @@ body {
     /* A soft tinted page background so white cards/content lift off it. */
     background: var(--color-page);
     color: var(--color-text);
+    font-size: var(--font-size-body);
 }
 
 a {
@@ -129,26 +193,31 @@ a:hover {
 h1, h2, h3, h4 {
     line-height: 1.25;
     color: var(--color-heading);
+    font-weight: var(--font-weight-heading);
+    letter-spacing: var(--letter-spacing-heading);
     margin: var(--space-5) 0 var(--space-3);
 }
 
 h1 {
-    font-size: 1.5rem;
+    font-size: var(--font-size-h1);
+    line-height: 1.15;   /* big type needs less leading, or wrapped lines drift apart */
     margin-top: 0;   /* the first heading on a page needs no gap above */
 }
 
 h2 {
-    font-size: 1.2rem;
+    font-size: var(--font-size-h2);
 }
 
 h3 {
-    font-size: 1.05rem;
+    font-size: var(--font-size-h3);
 }
 
 /* h4 gets its own size so it stays a step below h3 instead of falling back to the
-   browser default, which can render as large as (or larger than) a small h3. */
+   browser default, which can render as large as (or larger than) a small h3. Body
+   size: below that it would read smaller than the text it heads; the extra-bold
+   weight alone sets it apart. */
 h4 {
-    font-size: 0.95rem;
+    font-size: var(--font-size-body);
 }
 
 /* Comfortable paragraph rhythm and a capped line length for readability. */
@@ -161,6 +230,14 @@ h1:focus {
     outline: none;
 }
 
+/* Icons (Shared/Icon.razor) sit inline next to text: nudged down to line up with the
+   letters instead of the baseline, and never squeezed when they share a flex row
+   with a long label. */
+.icon {
+    flex-shrink: 0;
+    vertical-align: -0.15em;
+}
+
 /* Header navigation links. These live here (global), not in MainLayout.razor.css:
    NavLink renders plain <a> elements without a scoped-CSS attribute, so a scoped
    ".main-nav a" rule would not match them -- the links would fall back to the

Elternbeirat.Web/wwwroot/fonts/OFL.txt

@@ -0,0 +1,93 @@
+Copyright 2014 The Nunito Project Authors (https://github.com/googlefonts/nunito)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded, 
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.

docs/recht.md

@@ -24,6 +24,12 @@ Google Fonts, Maps, YouTube embeds, and CDN scripts transmit visitors' IPs to th
 parties. Fonts are served by ourselves. This is the reason behind the "no external
 resources" rule in `CLAUDE.md` — data protection, not taste.
 
+The site font is Nunito (SIL Open Font License 1.1), self-hosted under
+`wwwroot/fonts/` with its license file `OFL.txt` next to it, as the OFL requires.
+The icons are Lucide (ISC, partly MIT via Feather), inlined as SVG in
+`Shared/IconSet.cs` with the license notice in its comment. A smoke test fails if
+the stylesheet or the home page loads anything from an absolute URL.
+
 ## Photos of children
 
 Only with the consent of the legal guardians — by far the most common mistake on