diff --git a/css/admin.css b/css/admin.css
index d120bfa..45ff34a 100644
--- a/css/admin.css
+++ b/css/admin.css
@@ -101,14 +101,23 @@ input[type="checkbox"]:checked::after { content: '✓'; color: var(--background)
     left: 0;
     width: 100%;
     height: 100%;
-    background: rgba(0, 0, 0, 0.6); /* Fond sombre */
+    background: rgba(0, 0, 0, 0.6);
     display: flex;
-    justify-content: center; /* Centrage horizontal */
-    align-items: center;     /* Centrage vertical */
-    z-index: 1000;           /* Au-dessus du contenu */
+    justify-content: center;
+    align-items: center;
+    z-index: 1000;
     padding: 1rem;
+    
+    /* 🔥 CORRECTION : On cache par défaut */
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
 }
-.overlay.open { opacity: 1; visibility: visible; }
+.overlay.open { 
+    opacity: 1; 
+    visibility: visible; 
+}
+
 .modal {
     background: var(--surface-card);
     padding: 2rem;
@@ -116,9 +125,19 @@ input[type="checkbox"]:checked::after { content: '✓'; color: var(--background)
     width: 100%;
     max-width: 450px;
     box-shadow: 0 10px 25px rgba(0,0,0,0.2);
+    
+    /* 🔥 CORRECTION : Animation d'entrée et scroll interne si trop haut */
+    position: relative;
+    transform: translateY(20px) scale(0.95);
+    transition: all 0.3s ease;
+    max-height: 90vh;
+    overflow-y: auto;
 }
-.overlay.open .modal { transform: translateY(0) scale(1); }
-.modal-close { position: absolute; top: 1.5rem; right: 1.5rem; background: var(--surface); border: none; color: var(--muted); width: 32px; height: 32px; border-radius: 50%; font-size: 1.1rem; cursor: pointer; transition: all 0.2s; }
+
+.overlay.open .modal { 
+    transform: translateY(0) scale(1); 
+}
+.modal-close { position: absolute; top: 1.5rem; right: 1.5rem; background: var(--surface); border: none; color: var(--muted); width: 32px; height: 32px; border-radius: 50%; font-size: 1.1rem; cursor: pointer; transition: all 0.2s; z-index: 10; }
 .modal-close:hover { background: #ff4757; color: #fff; }
 .modal-h { margin-bottom: 1.5rem; color: var(--text); font-size: 1.3rem; display: flex; align-items: center; gap: 0.6rem; border-bottom: 1px solid var(--border); padding-bottom: 0.8rem; }
 .modal-h i { color: var(--gold); }