diff --git a/app/templates/board.html b/app/templates/board.html
index e316545..d5b5e16 100644
--- a/app/templates/board.html
+++ b/app/templates/board.html
@@ -253,25 +253,43 @@
   function renderCardDetail(owner, repo, data) {
     const issue = data.issue || {}, comments = data.comments || [], checklists = data.checklists || [], card = data.card || {};
     window._issueData = {owner, repo, issue, comments, checklists, card};
-    let h = '';
-    h += '<div class="detail-section"><span class="detail-state badge '+issue.state+'">'+issue.state+'</span> <strong>'+escHtml(issue.title||'')+'</strong></div>';
-    h += '<div class="detail-meta">';
-    (issue.labels||[]).forEach(l => h += '<span class="card-label" style="background:#'+(l.color||'666')+'33;color:#'+(l.color||'ccc')+'">'+escHtml(l.name)+'</span>');
-    if (issue.milestone) h += '<span>📅 '+escHtml(issue.milestone.title)+'</span>';
-    if (issue.assignee) h += '<span>👤 '+escHtml(issue.assignee.login)+'</span>';
-    h += '</div>';
-    h += '<div class="detail-editable"><label>Priorité: <select onchange="updateCardMeta(\''+owner+'\',\''+repo+'\','+issue.number+',this.value,\'\')" class="form-select-sm">';
-    ['Low','Medium','High','Urgent'].forEach(p => h += '<option value="'+p+'" '+(card.priority||'Medium')===p?'selected':'')+'>'+p+'</option>');
-    h += '</select></label> <label>Échéance: <input type="date" value="'+(card.due_date||'')+'" onchange="updateCardMeta(\''+owner+'\',\''+repo+'\','+issue.number+',\'\',this.value)" class="form-input-sm"></label></div>';
-    h += '<div class="detail-section"><h4>Description</h4><div class="markdown-body">'+escHtml(issue.body||'')+'</div></div>';
-    h += renderChecklists(owner, repo, issue.number, checklists);
-    h += '<div class="detail-section"><h4>Commentaires ('+comments.length+')</h4>';
-    comments.forEach(c => h += '<div class="comment"><img src="'+(c.user?.avatar_url||'')+'" width="24" height="24" class="avatar"><strong>'+escHtml(c.user?.login||'')+'</strong><span class="comment-date">'+(c.created_at||'').substr(0,10)+'</span><div class="comment-body">'+escHtml(c.body||'')+'</div></div>');
-    h += '</div>';
-    h += '<div class="detail-actions"><a href="'+(issue.html_url||'')+'" target="_blank" class="btn btn-sm">🔗 Ouvrir dans Gitea</a>';
-    h += '<button onclick="showEditForm(\''+owner+'\',\''+repo+'\','+issue.number+')" class="btn btn-sm">✏️ Éditer</button>';
-    h += '<button onclick="closeModal()" class="btn btn-sm">Fermer</button></div>';
-    return h;
+
+    const labelsHtml = (issue.labels || []).map(l =>
+      `<span class="card-label" style="background:#${l.color||'666'}33;color:#${l.color||'ccc'}">${escHtml(l.name)}</span>`
+    ).join('');
+
+    const prio = card.priority || 'Medium';
+    const prioOpts = ['Low','Medium','High','Urgent'].map(p =>
+      `<option value="${p}" ${prio===p?'selected':''}>${p}</option>`
+    ).join('');
+
+    return `
+      <div class="detail-section"><span class="detail-state badge ${issue.state}">${issue.state}</span> <strong>${escHtml(issue.title||'')}</strong></div>
+      <div class="detail-meta">
+        ${labelsHtml}
+        ${issue.milestone ? '<span>📅 '+escHtml(issue.milestone.title)+'</span>' : ''}
+        ${issue.assignee ? '<span>👤 '+escHtml(issue.assignee.login)+'</span>' : ''}
+      </div>
+      <div class="detail-editable">
+        <label>Priorité: <select onchange="updateCardMeta('${owner}','${repo}',${issue.number},this.value,'')" class="form-select-sm">${prioOpts}</select></label>
+        <label>Échéance: <input type="date" value="${card.due_date||''}" onchange="updateCardMeta('${owner}','${repo}',${issue.number},'',this.value)" class="form-input-sm"></label>
+      </div>
+      <div class="detail-section"><h4>Description</h4><div class="markdown-body">${escHtml(issue.body||'')}</div></div>
+      ${renderChecklists(owner, repo, issue.number, checklists)}
+      <div class="detail-section"><h4>Commentaires (${comments.length})</h4>
+        ${comments.map(c => `
+          <div class="comment">
+            <img src="${c.user?.avatar_url||''}" width="24" height="24" class="avatar">
+            <strong>${escHtml(c.user?.login||'')}</strong>
+            <span class="comment-date">${(c.created_at||'').substr(0,10)}</span>
+            <div class="comment-body">${escHtml(c.body||'')}</div>
+          </div>`).join('')}
+      </div>
+      <div class="detail-actions">
+        <a href="${issue.html_url||''}" target="_blank" class="btn btn-sm">🔗 Ouvrir dans Gitea</a>
+        <button onclick="showEditForm('${owner}','${repo}',${issue.number})" class="btn btn-sm">✏️ Éditer</button>
+        <button onclick="closeModal()" class="btn btn-sm">Fermer</button>
+      </div>`;
   }
 
   function renderChecklists(owner, repo, issueId, checklists) {