Modale de détail au clic sur une tuile événement (#2)

- calendar.php : ajout DTEND, DESCRIPTION, URL ; dépliage des lignes
  iCal et désescapage (\n, \,, \;)
- index.php : tuiles cliquables avec data-event JSON, modale native
  (overlay + dialog div), JS vanilla pour ouverture/fermeture (clic
  extérieur, touche Escape)
- style.css : styles modale et hover sur tuiles événements

Closes #2

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/assets/style.css

@@ -331,6 +331,70 @@ td.center { text-align: center; }
 .ip-bar { background: var(--primary); height: 10px; border-radius: 4px; min-width: 4px; }
 .ip-count { width: 24px; text-align: right; font-weight: 600; }
 
+/* ── Calendar events ──────────────────────────────────────────────── */
+.calendar-section { margin-bottom: 2.5rem; }
+.calendar-section h2 { font-size: 1.2rem; margin-bottom: 1rem; }
+
+.about-card--event {
+  cursor: pointer;
+  transition: border-color .15s, box-shadow .15s;
+}
+.about-card--event:hover {
+  border-color: var(--primary);
+  box-shadow: var(--shadow);
+}
+
+/* ── Event modal ──────────────────────────────────────────────────── */
+.event-modal-overlay {
+  display: none;
+  position: fixed; inset: 0; z-index: 200;
+  background: rgba(0,0,0,.45);
+  align-items: center;
+  justify-content: center;
+  padding: 1rem;
+}
+.event-modal-overlay--open { display: flex; }
+
+.event-modal {
+  background: var(--bg2);
+  border-radius: var(--radius);
+  box-shadow: 0 8px 40px rgba(0,0,0,.18);
+  padding: 2rem;
+  max-width: 560px;
+  width: 100%;
+  position: relative;
+  max-height: 90vh;
+  overflow-y: auto;
+}
+
+.event-modal-close {
+  position: absolute; top: 1rem; right: 1rem;
+  background: none; border: none; cursor: pointer;
+  font-size: 1.4rem; color: var(--text-muted); line-height: 1;
+}
+.event-modal-close:hover { color: var(--text); }
+
+.event-modal-title { font-size: 1.2rem; margin-bottom: 1rem; padding-right: 2rem; }
+
+.event-modal-meta {
+  display: grid;
+  grid-template-columns: auto 1fr;
+  gap: .3rem .8rem;
+  font-size: .88rem;
+  margin-bottom: 1.2rem;
+}
+.event-modal-meta dt { color: var(--text-muted); white-space: nowrap; }
+.event-modal-meta dd { color: var(--text); }
+
+.event-modal-desc {
+  font-size: .9rem;
+  color: var(--text);
+  line-height: 1.7;
+  border-top: 1px solid var(--border);
+  padding-top: 1rem;
+  white-space: pre-line;
+}
+
 /* ── Footer ───────────────────────────────────────────────────────── */
 footer {
   text-align: center;

web/inc/calendar.php

@@ -19,26 +19,37 @@ function _ical_upcoming(string $ical, int $n): array {
     $events = [];
     $now    = time();
 
+    // Unfold continuation lines before parsing
+    $ical = preg_replace('/\r?\n[ \t]/', '', $ical);
+
     preg_match_all('/BEGIN:VEVENT(.+?)END:VEVENT/s', $ical, $blocks);
 
     foreach ($blocks[1] as $b) {
         $e = [];
 
         if (preg_match('/^SUMMARY[^:]*:(.+)$/m', $b, $m))
-            $e['title'] = trim($m[1]);
+            $e['title'] = _ical_unescape(trim($m[1]));
 
         if (preg_match('/^LOCATION[^:]*:(.+)$/m', $b, $m))
-            $e['location'] = trim($m[1]);
+            $e['location'] = _ical_unescape(trim($m[1]));
+
+        if (preg_match('/^DESCRIPTION[^:]*:(.+)$/m', $b, $m))
+            $e['description'] = _ical_unescape(trim($m[1]));
+
+        if (preg_match('/^URL[^:]*:(.+)$/m', $b, $m))
+            $e['url'] = trim($m[1]);
 
         // Handles: DTSTART:YYYYMMDD, DTSTART:YYYYMMDDTHHmmss[Z], DTSTART;TZID=...:YYYYMMDDTHHmmss
-        if (preg_match('/^DTSTART(?:;[^:]+)?:([\dTZ]+)/m', $b, $m)) {
+        foreach (['start' => 'DTSTART', 'end' => 'DTEND'] as $key => $prop) {
+            if (preg_match('/^' . $prop . '(?:;[^:]+)?:([\dTZ]+)/m', $b, $m)) {
                 $raw = $m[1];
                 if (strlen($raw) === 8) {
-                $e['start'] = mktime(0, 0, 0, (int)substr($raw, 4, 2), (int)substr($raw, 6, 2), (int)substr($raw, 0, 4));
+                    $e[$key] = mktime(0, 0, 0, (int)substr($raw, 4, 2), (int)substr($raw, 6, 2), (int)substr($raw, 0, 4));
                 } else {
                     $dt = DateTime::createFromFormat('Ymd\THis\Z', $raw, new DateTimeZone('UTC'))
                        ?: DateTime::createFromFormat('Ymd\THis',  $raw, new DateTimeZone('Europe/Paris'));
-                if ($dt) $e['start'] = $dt->getTimestamp();
+                    if ($dt) $e[$key] = $dt->getTimestamp();
+                }
             }
         }
 
@@ -50,3 +61,7 @@ function _ical_upcoming(string $ical, int $n): array {
 
     return array_slice($events, 0, $n);
 }
+
+function _ical_unescape(string $s): string {
+    return str_replace(['\\n', '\\,', '\\;', '\\\\'], ["\n", ',', ';', '\\'], $s);
+}

web/index.php

@@ -70,13 +70,73 @@ require __DIR__ . '/views/layout.php';
   <h2>Prochains événements</h2>
   <div class="about-grid">
     <?php foreach ($calendar_events as $ev): ?>
-    <div class="about-card">
+    <div class="about-card about-card--event"
+         onclick="openEventModal(this)"
+         data-event="<?= htmlspecialchars(json_encode([
+           'title'       => $ev['title'],
+           'start'       => $ev['start'],
+           'end'         => $ev['end']         ?? null,
+           'location'    => $ev['location']    ?? null,
+           'description' => $ev['description'] ?? null,
+           'url'         => $ev['url']         ?? null,
+         ]), ENT_QUOTES) ?>">
       <div class="about-title"><?= htmlspecialchars($ev['title']) ?></div>
-      <p><?= date('d/m/Y', $ev['start']) ?><?= !empty($ev['location']) ? ' — ' . htmlspecialchars($ev['location']) : '' ?></p>
+      <p>
+        <?= date('d/m/Y H:i', $ev['start']) ?>
+        <?= !empty($ev['location']) ? ' — ' . htmlspecialchars($ev['location']) : '' ?>
+      </p>
     </div>
     <?php endforeach; ?>
   </div>
 </section>
+
+<div id="event-modal-overlay" class="event-modal-overlay" onclick="closeEventModal(event)">
+  <div class="event-modal" role="dialog" aria-modal="true">
+    <button class="event-modal-close" onclick="closeEventModal()" aria-label="Fermer">&times;</button>
+    <h2 class="event-modal-title" id="event-modal-title"></h2>
+    <dl class="event-modal-meta" id="event-modal-meta"></dl>
+    <div class="event-modal-desc" id="event-modal-desc"></div>
+    <div id="event-modal-url"></div>
+  </div>
+</div>
+
+<script>
+function openEventModal(card) {
+  const ev = JSON.parse(card.dataset.event);
+  const fmt = ts => ts ? new Date(ts * 1000).toLocaleString('fr-FR', {weekday:'long', day:'numeric', month:'long', year:'numeric', hour:'2-digit', minute:'2-digit'}) : null;
+
+  document.getElementById('event-modal-title').textContent = ev.title;
+
+  let meta = '';
+  const start = fmt(ev.start), end = fmt(ev.end);
+  if (start) meta += `<dt>Début</dt><dd>${start}</dd>`;
+  if (end)   meta += `<dt>Fin</dt><dd>${end}</dd>`;
+  if (ev.location) meta += `<dt>Lieu</dt><dd>${ev.location}</dd>`;
+  document.getElementById('event-modal-meta').innerHTML = meta;
+
+  const desc = document.getElementById('event-modal-desc');
+  if (ev.description) {
+    desc.innerHTML = ev.description.replace(/\n/g, '<br>');
+    desc.style.display = '';
+  } else {
+    desc.style.display = 'none';
+  }
+
+  const urlEl = document.getElementById('event-modal-url');
+  urlEl.innerHTML = ev.url ? `<a href="${ev.url}" target="_blank" rel="noopener" class="btn-outline btn-sm" style="margin-top:1rem;display:inline-block">En savoir plus →</a>` : '';
+
+  document.getElementById('event-modal-overlay').classList.add('event-modal-overlay--open');
+  document.body.style.overflow = 'hidden';
+}
+
+function closeEventModal(e) {
+  if (e && e.target !== document.getElementById('event-modal-overlay')) return;
+  document.getElementById('event-modal-overlay').classList.remove('event-modal-overlay--open');
+  document.body.style.overflow = '';
+}
+
+document.addEventListener('keydown', e => { if (e.key === 'Escape') closeEventModal(); });
+</script>
 <?php endif; ?>
 
 <section class="services-section">