amélioration de l'affichage des notifications dynamiques

assets/css/components.css

@@ -148,6 +148,31 @@
     border: 1px solid #373;
 }
 
+/* Notifications dynamiques */
+.notification {
+    position: fixed;
+    top: 20px;
+    right: 20px;
+    padding: 1rem 2rem;
+    border-radius: var(--radius-sm);
+    background: var(--bg-secondary);
+    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+    opacity: 0;
+    transform: translateY(-100%);
+    transition: opacity 0.3s ease, transform 0.3s ease;
+    z-index: 1000;
+}
+
+.notification.success {
+    background-color: var(--success-color);
+    color: var(--text-primary);
+}
+
+.notification.error {
+    background-color: var(--error-color);
+    color: var(--text-primary);
+}
+
 /* Modal */
 .modal {
     position: fixed;