diff --git a/public/index.html b/public/index.html
index a883da5..b96c181 100644
--- a/public/index.html
+++ b/public/index.html
@@ -7,10 +7,34 @@
 <link href="https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400&family=Lora:ital,wght@0,400;0,500;0,600;1,400&display=swap" rel="stylesheet">
 <script src="https://cdn.jsdelivr.net/npm/sortablejs@1.15.6/Sortable.min.js"></script>
 <script type="module">
-import { Editor } from 'https://esm.sh/@tiptap/core@2.11.7';
+import { Editor, Mark } from 'https://esm.sh/@tiptap/core@2.11.7';
 import StarterKit from 'https://esm.sh/@tiptap/starter-kit@2.11.7';
+
+const Comment = Mark.create({
+  name: 'comment',
+  addAttributes() {
+    return {
+      text: { default: '' },
+      author: { default: 'E' },
+      date: { default: '' },
+    };
+  },
+  parseHTML() {
+    return [{ tag: 'span[data-comment]' }];
+  },
+  renderHTML({ HTMLAttributes }) {
+    return ['span', {
+      'data-comment': HTMLAttributes.text,
+      'data-author': HTMLAttributes.author,
+      'data-date': HTMLAttributes.date,
+      class: `comment-mark comment-${(HTMLAttributes.author || 'E').toLowerCase()}`,
+    }, 0];
+  },
+});
+
 window.TiptapEditor = Editor;
 window.TiptapStarterKit = StarterKit;
+window.TiptapComment = Comment;
 window.dispatchEvent(new Event('tiptap-loaded'));
 </script>
 <style>
@@ -343,6 +367,27 @@ window.dispatchEvent(new Event('tiptap-loaded'));
   .editor-saving.show { opacity: 1; }
   .word-count { font-size: 12px; color: var(--text-hint); padding: 8px 32px; border-top: 1px solid var(--border-light); background: var(--bg); }
 
+  /* Comments */
+  .comment-mark { cursor: pointer; border-radius: 2px; padding: 1px 0; }
+  .comment-mark.comment-e { background: rgba(106,122,66,0.15); border-bottom: 2px solid rgba(106,122,66,0.4); }
+  .comment-mark.comment-m { background: rgba(184,92,58,0.15); border-bottom: 2px solid rgba(184,92,58,0.4); }
+  .dark .comment-mark.comment-e { background: rgba(138,170,90,0.2); border-bottom-color: rgba(138,170,90,0.4); }
+  .dark .comment-mark.comment-m { background: rgba(212,132,90,0.2); border-bottom-color: rgba(212,132,90,0.4); }
+
+  .comment-popup { position: fixed; z-index: 300; background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px; padding: 14px 18px; box-shadow: 0 4px 20px var(--shadow-hover); max-width: 320px; min-width: 200px; }
+  .comment-popup-author { font-size: 12px; font-weight: 600; margin-bottom: 4px; }
+  .comment-popup-author.e { color: var(--olive); }
+  .comment-popup-author.m { color: var(--terra); }
+  .comment-popup-date { font-size: 11px; color: var(--text-light); margin-bottom: 8px; }
+  .comment-popup-text { font-size: 14px; color: var(--text); line-height: 1.5; }
+  .comment-popup-actions { margin-top: 10px; display: flex; gap: 8px; justify-content: flex-end; }
+  .comment-popup-actions button { font-size: 12px; padding: 4px 12px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg); color: var(--text-muted); cursor: pointer; font-family: 'Lora', serif; }
+  .comment-popup-actions button:hover { background: var(--bg-alt); color: var(--text); }
+  .comment-popup-actions button.delete { border-color: #8b3030; color: #8b3030; }
+  .comment-popup-actions button.delete:hover { background: #8b3030; color: #fff; }
+
+  .toolbar-sep { width: 1px; background: var(--border); margin: 4px 6px; }
+
   /* Responsive */
   @media (max-width: 768px) {
     .sidebar { display: none; }
@@ -485,6 +530,15 @@ window.dispatchEvent(new Event('tiptap-loaded'));
       </div>
     </div>
     <div class="editor-saving" id="editor-saving">Enregistré</div>
+    <div class="comment-popup" id="comment-popup" style="display:none;">
+      <div class="comment-popup-author" id="comment-popup-author"></div>
+      <div class="comment-popup-date" id="comment-popup-date"></div>
+      <div class="comment-popup-text" id="comment-popup-text"></div>
+      <div class="comment-popup-actions">
+        <button onclick="closeCommentPopup()">Fermer</button>
+        <button class="delete" onclick="deleteComment()">Supprimer</button>
+      </div>
+    </div>
 
     <div class="vision-saving" id="vision-saving">Enregistré</div>
 
@@ -1467,6 +1521,7 @@ function initEditor(html) {
 
   const Editor = window.TiptapEditor;
   const StarterKit = window.TiptapStarterKit;
+  const CommentMark = window.TiptapComment;
 
   if (!Editor || !StarterKit) {
     // Fallback: contenteditable div if TipTap CDN not loaded
@@ -1479,9 +1534,12 @@ function initEditor(html) {
     return;
   }
 
+  const extensions = [StarterKit];
+  if (CommentMark) extensions.push(CommentMark);
+
   tiptapEditor = new Editor({
     element: document.getElementById('editor-content'),
-    extensions: [StarterKit],
+    extensions,
     content: html || '<p></p>',
     onUpdate: () => {
       clearTimeout(saveTimeout);
@@ -1490,6 +1548,12 @@ function initEditor(html) {
     },
   });
 
+  // Listen for clicks on comment marks
+  document.getElementById('editor-content').addEventListener('click', (e) => {
+    const mark = e.target.closest('.comment-mark');
+    if (mark) showCommentPopup(mark, e);
+  });
+
   buildToolbar();
 }
 
@@ -1517,6 +1581,18 @@ function buildToolbar() {
     bar.appendChild(btn);
   });
 
+  // Separator + Comment button
+  const sep = document.createElement('span');
+  sep.className = 'toolbar-sep';
+  bar.appendChild(sep);
+
+  const commentBtn = document.createElement('button');
+  commentBtn.innerHTML = 'Commenter';
+  commentBtn.title = 'Ajouter un commentaire sur la sélection';
+  commentBtn.style.cssText = 'font-size:13px;';
+  commentBtn.onclick = () => addComment();
+  bar.appendChild(commentBtn);
+
   // Update active states on selection change
   tiptapEditor.on('selectionUpdate', () => {
     bar.querySelectorAll('button').forEach((btn, i) => {
@@ -1593,6 +1669,67 @@ async function loadWordCounts() {
   } catch (e) { /* silent */ }
 }
 loadWordCounts();
+
+// ── Comments ──
+function addComment() {
+  if (!tiptapEditor) return;
+  const { from, to } = tiptapEditor.state.selection;
+  if (from === to) { alert('Sélectionnez du texte pour commenter.'); return; }
+
+  const author = prompt('Auteur (E ou M) :', 'E');
+  if (!author) return;
+  const text = prompt('Commentaire :');
+  if (!text) return;
+
+  const now = new Date().toLocaleDateString('fr-FR', { day: 'numeric', month: 'long', year: 'numeric' });
+
+  tiptapEditor.chain().focus()
+    .setMark('comment', { text, author: author.toUpperCase(), date: now })
+    .run();
+}
+
+let activeCommentMark = null;
+
+function showCommentPopup(markEl, event) {
+  activeCommentMark = markEl;
+  const popup = document.getElementById('comment-popup');
+  const author = markEl.getAttribute('data-author') || 'E';
+  const authorName = author === 'M' ? 'Myriam' : 'Etienne';
+
+  document.getElementById('comment-popup-author').textContent = authorName;
+  document.getElementById('comment-popup-author').className = `comment-popup-author ${author.toLowerCase()}`;
+  document.getElementById('comment-popup-date').textContent = markEl.getAttribute('data-date') || '';
+  document.getElementById('comment-popup-text').textContent = markEl.getAttribute('data-comment') || '';
+
+  // Position near click
+  const rect = markEl.getBoundingClientRect();
+  popup.style.display = 'block';
+  popup.style.top = (rect.bottom + 8) + 'px';
+  popup.style.left = Math.min(rect.left, window.innerWidth - 340) + 'px';
+}
+
+function closeCommentPopup() {
+  document.getElementById('comment-popup').style.display = 'none';
+  activeCommentMark = null;
+}
+
+function deleteComment() {
+  if (!tiptapEditor || !activeCommentMark) return;
+  // Find the position of this mark in the editor and remove it
+  tiptapEditor.chain().focus().unsetMark('comment').run();
+  closeCommentPopup();
+  // Trigger save
+  clearTimeout(saveTimeout);
+  saveTimeout = setTimeout(saveContent, 500);
+}
+
+// Close popup on click outside
+document.addEventListener('click', (e) => {
+  const popup = document.getElementById('comment-popup');
+  if (popup.style.display === 'block' && !popup.contains(e.target) && !e.target.closest('.comment-mark')) {
+    closeCommentPopup();
+  }
+});
 </script>
 </body>
 </html>