TOC: extract h1/h2/h3, indent sub-levels in charte/licence sidebar

app/public/assets/css/components/toc.css

@@ -38,6 +38,13 @@
 	font-weight: 400;
 }
 
+/* Indent sub-headings in TOC */
+.toc-list .toc-level-2 { padding-left: var(--space-s); }
+.toc-list .toc-level-3 { padding-left: var(--space-m); }
+
+.toc-list .toc-level-2 a { font-size: var(--step--1); }
+.toc-list .toc-level-3 a { font-size: var(--step--2); }
+
 /* ── Public TOC (details/summary block) ─────────────────────────────────── */
 .toc {
 	border: none;

app/src/MarkdownHelper.php

@@ -6,12 +6,12 @@
 class MarkdownHelper
 {
     /**
-     * Extract h1 headings from raw markdown content as TOC items.
+     * Extract h1–h3 headings from raw markdown content as TOC items.
      *
      * Each heading gets an anchor id matching CommonMark's default slugification
      * (lowercase, spaces → hyphens, punctuation stripped).
      *
-     * @return array<int, array{label: string, href: string}>
+     * @return array<int, array{label: string, href: string, level: int}>
      */
     public static function extractToc(string $content): array
     {
@@ -22,10 +22,11 @@ class MarkdownHelper
         $normalizer = new \League\CommonMark\Normalizer\SlugNormalizer();
 
         foreach ($lines as $line) {
-            if (preg_match('/^#\s+(.+)$/', $line, $m)) {
-                $label = trim($m[1]);
+            if (preg_match('/^(#{1,3})\s+(.+)$/', $line, $m)) {
+                $level = strlen($m[1]);
+                $label = trim($m[2]);
                 $id = $normalizer->normalize($label);
-                $items[] = ['label' => $label, 'href' => '#' . $id];
+                $items[] = ['label' => $label, 'href' => '#' . $id, 'level' => $level];
             }
         }
         return $items;

app/templates/public/charte.php

@@ -6,7 +6,7 @@
         <summary><?= icon('caret-down', 0, 'toc-caret') ?> PARTIES</summary>
         <ul class="toc-list">
             <?php foreach ($tocItems as $item): ?>
-            <li><a href="<?= htmlspecialchars($item['href']) ?>"><?= htmlspecialchars($item['label']) ?></a></li>
+            <li class="toc-level-<?= $item['level'] ?? 1 ?>"><a href="<?= htmlspecialchars($item['href']) ?>"><?= htmlspecialchars($item['label']) ?></a></li>
             <?php endforeach; ?>
         </ul>
     </details>

app/templates/public/licence.php

@@ -6,7 +6,7 @@
         <summary><?= icon('caret-down', 0, 'toc-caret') ?> PARTIES</summary>
         <ul class="toc-list">
             <?php foreach ($tocItems as $item): ?>
-            <li><a href="<?= htmlspecialchars($item['href']) ?>"><?= htmlspecialchars($item['label']) ?></a></li>
+            <li class="toc-level-<?= $item['level'] ?? 1 ?>"><a href="<?= htmlspecialchars($item['href']) ?>"><?= htmlspecialchars($item['label']) ?></a></li>
             <?php endforeach; ?>
         </ul>
     </details>