filtre multiple

modules/gift-list/gift-list.css

@@ -282,3 +282,98 @@
     grid-template-columns: 1fr;
   }
 }
+/* === COMPOSANT MULTI-SELECT VANILLA === */
+.pf-multi-select {
+  position: relative;
+  display: inline-block;
+}
+
+/* Le bouton déclencheur (réutilise le style des filtres) */
+.pf-ms-trigger {
+  padding: 6px 16px;
+  border-radius: 20px;
+  border: 1px solid var(--border-light);
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(8px);
+  font-size: 0.85rem;
+  font-weight: 600;
+  color: var(--text-main);
+  cursor: pointer;
+  box-shadow: var(--shadow-sm);
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  user-select: none;
+}
+.pf-ms-trigger:hover {
+  border-color: #cbd5e1;
+}
+.pf-ms-trigger.active {
+  border-color: var(--primary);
+  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
+}
+
+/* Le menu déroulant */
+.pf-ms-dropdown {
+  display: none;
+  position: absolute;
+  top: calc(100% + 8px);
+  left: 0;
+  background: white;
+  border: 1px solid var(--border-light);
+  border-radius: 12px;
+  padding: 8px;
+  box-shadow: var(--shadow-lg);
+  z-index: 100;
+  min-width: 200px;
+  flex-direction: column;
+  gap: 4px;
+  max-height: 60vh;
+  overflow-y: auto;
+}
+.pf-ms-dropdown.open {
+  display: flex;
+  animation: popDown 0.2s cubic-bezier(0.16, 1, 0.3, 1) forwards;
+}
+
+/* Les options (checkboxes) */
+.pf-ms-option {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  font-size: 0.85rem;
+  font-weight: 500;
+  cursor: pointer;
+  padding: 8px 10px;
+  border-radius: 6px;
+  color: var(--text-main);
+  transition: 0.2s;
+}
+.pf-ms-option:hover {
+  background: #f8fafc;
+}
+.pf-ms-option input[type="checkbox"] {
+  margin: 0;
+  cursor: pointer;
+  accent-color: var(--primary);
+  width: 16px;
+  height: 16px;
+}
+.pf-ms-option.is-all {
+  font-weight: 700;
+  border-bottom: 1px solid #e2e8f0;
+  padding-bottom: 10px;
+  margin-bottom: 4px;
+  border-radius: 6px 6px 0 0;
+}
+
+@keyframes popDown {
+  from {
+    opacity: 0;
+    transform: translateY(-10px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}