diff --git a/backend/src/routes/tickets.js b/backend/src/routes/tickets.js
index ee53e88..5aa68a6 100644
--- a/backend/src/routes/tickets.js
+++ b/backend/src/routes/tickets.js
@@ -242,6 +242,21 @@ router.patch('/:id/status', requireAdmin, (req, res) => {
   res.json({ ok: true });
 });
 
+// ── PATCH /api/tickets/:id/categorize — modifier type et pages ───────────────
+router.patch('/:id/categorize', (req, res) => {
+  const { id: userId, role } = req.user;
+  const isAdmin = role === 'admin';
+
+  const ticket = db.prepare('SELECT * FROM tickets WHERE id = ?').get(req.params.id);
+  if (!ticket) return res.status(404).json({ error: 'Ticket introuvable' });
+  if (!isAdmin && ticket.user_id !== userId) return res.status(403).json({ error: 'Accès refusé' });
+
+  const { ticket_type, ticket_pages } = req.body;
+  db.prepare("UPDATE tickets SET ticket_type = ?, ticket_pages = ?, updated_at = datetime('now') WHERE id = ?")
+    .run(ticket_type ?? null, ticket_pages ?? null, req.params.id);
+  res.json({ ok: true });
+});
+
 // ── PATCH /api/tickets/:id/assign — assigner à un admin ──────────────────────
 router.patch('/:id/assign', requireAdmin, (req, res) => {
   const { assigned_to } = req.body; // null pour désassigner
diff --git a/frontend/src/pages/Communication.jsx b/frontend/src/pages/Communication.jsx
index 9da2cfb..75f5cb5 100644
--- a/frontend/src/pages/Communication.jsx
+++ b/frontend/src/pages/Communication.jsx
@@ -558,7 +558,10 @@ export default function Communication() {
   const navigate                    = useNavigate();
   const [notifMenuPos, setNotifMenuPos]     = useState(null); // { x, y }
   const [supportMenuPos, setSupportMenuPos] = useState(null); // { x, y }
-  const [showAssignModal, setShowAssignModal] = useState(false);
+  const [showAssignModal, setShowAssignModal]   = useState(false);
+  const [showCategModal, setShowCategModal]     = useState(false);
+  const [categType, setCategType]               = useState(null);
+  const [categPages, setCategPages]             = useState([]);
   const [assignSearch, setAssignSearch]       = useState('');
 
   const [tab, setTab]               = useState('support'); // 'support' | 'notifications'
@@ -1036,9 +1039,9 @@ export default function Communication() {
                         <StatusBadge status={t.status} />
                       </div>
                       <div className="comm-list-row-subject">{t.ticket_number} — {t.subject}</div>
-                      <TicketChips ticketType={t.ticket_type} ticketPages={t.ticket_pages} />
+                      <TicketChips ticketType={t.ticket_type} />
                       {t.last_body && (
-                        <div className="comm-list-row-preview">{stripPreview(t.last_body)}</div>
+                        <div className="comm-list-row-preview" style={{ visibility: 'hidden' }}>{stripPreview(t.last_body)}</div>
                       )}
                       <div className="comm-list-row-meta">
                         <span>{t.message_count} message{t.message_count > 1 ? 's' : ''}</span>
@@ -1159,19 +1162,44 @@ export default function Communication() {
           {/* Détail ticket */}
           {tab === 'support' && thread && (
             <>
-              <div className="comm-detail-header">
-                <div>
-                  <div style={{ fontWeight: 700, fontSize: 15, marginBottom: 2 }}>
+              <div className="comm-detail-header" style={{ flexDirection: 'column', alignItems: 'stretch', gap: 0 }}>
+                {/* Ligne 1 : type chip + titre + badge statut */}
+                <div style={{ display: 'flex', alignItems: 'center', gap: 8, marginBottom: 2, flexWrap: 'wrap' }}>
+                  {thread.ticket.ticket_type && (() => {
+                    const type = TICKET_TYPES.find(t => t.value === thread.ticket.ticket_type);
+                    return type ? (
+                      <span className="ticket-chip ticket-chip-type" style={TYPE_COLORS[thread.ticket.ticket_type] || {}}>
+                        {type.label}
+                      </span>
+                    ) : null;
+                  })()}
+                  <span style={{ fontWeight: 700, fontSize: 15, flex: 1, minWidth: 0 }}>
                     {thread.ticket.ticket_number} — {thread.ticket.subject}
-                  </div>
-                  <div style={{ fontSize: 12, color: 'var(--text-muted)' }}>
-                    Ouvert par {thread.ticket.user_name} · {fmtDate(thread.ticket.created_at)}
-                  </div>
-                  <TicketChips ticketType={thread.ticket.ticket_type} ticketPages={thread.ticket.ticket_pages} />
-                </div>
-                <div style={{ display: 'flex', gap: 8, alignItems: 'center' }}>
+                  </span>
                   <StatusBadge status={thread.ticket.status} />
                 </div>
+                {/* Ligne 2 : meta gauche + chips pages droite */}
+                {(() => {
+                  const pages = thread.ticket.ticket_pages
+                    ? (Array.isArray(thread.ticket.ticket_pages) ? thread.ticket.ticket_pages : JSON.parse(thread.ticket.ticket_pages))
+                    : [];
+                  return (
+                    <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', marginTop: 25 }}>
+                      <span style={{ fontSize: 12, color: 'var(--text-muted)' }}>
+                        Ouvert par <strong style={{ color: 'var(--text)' }}>{thread.ticket.user_name}</strong> · {fmtDate(thread.ticket.created_at)}
+                        {thread.ticket.assigned_name && (
+                          <> — assigné à <strong style={{ color: 'var(--text)' }}>{thread.ticket.assigned_name}</strong></>
+                        )}
+                      </span>
+                      <div className="ticket-chips" style={{ margin: 0 }}>
+                        {pages.map(p => {
+                          const page = TICKET_PAGES.find(x => x.value === p);
+                          return page ? <span key={p} className="ticket-chip ticket-chip-page">{page.label}</span> : null;
+                        })}
+                      </div>
+                    </div>
+                  );
+                })()}
               </div>
 
               <div className="comm-thread">
@@ -1540,6 +1568,23 @@ export default function Communication() {
               <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M12 5v14"/><path d="M5 12h14"/></svg>
               Nouveau ticket
             </button>
+            {thread && (
+              <button
+                style={{ display: 'flex', alignItems: 'center', gap: 8, width: '100%', padding: '8px 14px', background: 'none', border: 'none', cursor: 'pointer', fontSize: 'var(--fs-sm)', color: 'var(--text)', textAlign: 'left' }}
+                onMouseEnter={e => e.currentTarget.style.background = 'var(--surface-2)'}
+                onMouseLeave={e => e.currentTarget.style.background = 'none'}
+                onClick={() => {
+                  setCategType(thread.ticket.ticket_type ?? null);
+                  const p = thread.ticket.ticket_pages;
+                  setCategPages(p ? (Array.isArray(p) ? p : JSON.parse(p)) : []);
+                  setShowCategModal(true);
+                  setSupportMenuPos(null);
+                }}
+              >
+                <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><path d="M11 4H4a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14a2 2 0 0 0 2-2v-7"/><path d="M18.5 2.5a2.121 2.121 0 0 1 3 3L12 15l-4 1 1-4 9.5-9.5z"/></svg>
+                Modifier la catégorisation
+              </button>
+            )}
             {thread && isAdmin && (
               <>
                 <button
@@ -1583,6 +1628,10 @@ export default function Communication() {
                     : <><svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2"><polyline points="20 6 9 17 4 12"/></svg>Clôturer le ticket</>
                   }
                 </button>
+              </>
+            )}
+            {thread && (
+              <>
                 <div style={{ borderTop: '1px solid var(--border)', margin: '4px 0' }} />
                 <button
                   style={{ display: 'flex', alignItems: 'center', gap: 8, width: '100%', padding: '8px 14px', background: 'none', border: 'none', cursor: 'pointer', fontSize: 'var(--fs-sm)', color: 'var(--text-muted)', textAlign: 'left' }}
@@ -1660,6 +1709,57 @@ export default function Communication() {
         </div>
       )}
 
+      {/* ── Modale catégorisation ticket ── */}
+      {showCategModal && thread && (
+        <div className="comm-modal-backdrop" onClick={() => setShowCategModal(false)}>
+          <div className="comm-modal" style={{ maxWidth: 420 }} onClick={e => e.stopPropagation()}>
+            <div className="comm-modal-header">
+              <span style={{ fontWeight: 700, fontSize: 15 }}>Modifier la catégorisation</span>
+              <button className="comm-modal-close" onClick={() => setShowCategModal(false)}>×</button>
+            </div>
+            <div style={{ padding: '16px 20px 20px', display: 'flex', flexDirection: 'column', gap: 16 }}>
+              <div>
+                <div style={{ fontSize: 12, fontWeight: 600, color: 'var(--text-muted)', marginBottom: 6, textTransform: 'uppercase', letterSpacing: '0.05em' }}>Type</div>
+                <TagSelect label="Type" options={TICKET_TYPES} value={categType} onChange={setCategType} />
+              </div>
+              <div>
+                <div style={{ fontSize: 12, fontWeight: 600, color: 'var(--text-muted)', marginBottom: 6, textTransform: 'uppercase', letterSpacing: '0.05em' }}>Pages concernées</div>
+                <TagSelect label="Pages" options={TICKET_PAGES} value={categPages} onChange={setCategPages} multi />
+              </div>
+              <div style={{ display: 'flex', justifyContent: 'flex-end', gap: 8, marginTop: 4 }}>
+                <button className="btn btn-ghost" onClick={() => setShowCategModal(false)}>Annuler</button>
+                <button
+                  className="btn btn-primary"
+                  onClick={async () => {
+                    try {
+                      await api.patch(`/tickets/${thread.ticket.id}/categorize`, {
+                        ticket_type: categType,
+                        ticket_pages: categPages.length ? JSON.stringify(categPages) : null,
+                      });
+                      setThread(prev => ({
+                        ...prev,
+                        ticket: {
+                          ...prev.ticket,
+                          ticket_type: categType,
+                          ticket_pages: categPages.length ? categPages : null,
+                        },
+                      }));
+                      setTickets(prev => prev.map(t => t.id === thread.ticket.id
+                        ? { ...t, ticket_type: categType, ticket_pages: categPages.length ? JSON.stringify(categPages) : null }
+                        : t
+                      ));
+                      setShowCategModal(false);
+                    } catch { /* silencieux */ }
+                  }}
+                >
+                  Enregistrer
+                </button>
+              </div>
+            </div>
+          </div>
+        </div>
+      )}
+
       {/* ── Lightbox image ── */}
       {lightbox && (
         <div className="comm-lightbox" onClick={() => setLightbox(null)}>