Mejorar estilo de filtros de grupos con glassmorphism

- Reemplazar UButton por botones nativos con estilos personalizados
- Aplicar glassmorphism consistente con el resto de la app
- Estados normal y activo con efectos de sombra y color
- Hover con translateY para efecto de elevación
- Soporte completo para modo oscuro con opacidades ajustadas
- Botones activos con color primario y borde resaltado

nuxt4/app/components/auth/ApplicationsList.vue

@@ -13,16 +13,14 @@
 
       <!-- Filtros por grupos -->
       <div v-if="availableGroups.length > 0" class="filter-section">
-        <UButton
+        <button
           v-for="group in availableGroups"
           :key="group"
-          size="sm"
-          :color="selectedGroups.includes(group) ? 'primary' : 'neutral'"
-          :variant="selectedGroups.includes(group) ? 'soft' : 'ghost'"
+          :class="['filter-button', { 'filter-button-active': selectedGroups.includes(group) }]"
           @click="toggleGroup(group)"
         >
           {{ group }}
-        </UButton>
+        </button>
       </div>
     </div>
 
@@ -283,6 +281,50 @@ onUnmounted(() => {
   gap: 0.5rem;
 }
 
+.filter-button {
+  padding: 0.5rem 1rem;
+  font-size: 0.875rem;
+  font-weight: 500;
+  border-radius: 0.75rem;
+  background: rgba(255, 255, 255, 0.25);
+  backdrop-filter: blur(10px) saturate(150%);
+  border: 1px solid rgba(0, 0, 0, 0.08);
+  color: var(--color-gray-700);
+  cursor: pointer;
+  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
+  box-shadow:
+    0 2px 6px 0 rgba(31, 38, 135, 0.08),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.3);
+}
+
+.filter-button:hover {
+  transform: translateY(-2px);
+  background: rgba(255, 255, 255, 0.35);
+  box-shadow:
+    0 4px 12px 0 rgba(31, 38, 135, 0.12),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.4);
+}
+
+.filter-button-active {
+  background: rgba(var(--color-primary-500), 0.15);
+  border-color: rgba(var(--color-primary-500), 0.3);
+  color: rgb(var(--color-primary-500));
+  font-weight: 600;
+  box-shadow:
+    0 2px 8px 0 rgba(var(--color-primary-500), 0.2),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.3),
+    inset 0 -1px 2px 0 rgba(var(--color-primary-500), 0.1);
+}
+
+.filter-button-active:hover {
+  background: rgba(var(--color-primary-500), 0.2);
+  border-color: rgba(var(--color-primary-500), 0.4);
+  box-shadow:
+    0 4px 12px 0 rgba(var(--color-primary-500), 0.3),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.4),
+    inset 0 -1px 2px 0 rgba(var(--color-primary-500), 0.15);
+}
+
 .empty-state {
   display: flex;
   flex-direction: column;
@@ -476,4 +518,41 @@ onUnmounted(() => {
 .dark .app-description {
   color: var(--color-gray-400) !important;
 }
+
+.dark .filter-button {
+  background: rgba(255, 255, 255, 0.05) !important;
+  border-color: rgba(255, 255, 255, 0.1) !important;
+  color: var(--color-gray-300) !important;
+  box-shadow:
+    0 2px 6px 0 rgba(0, 0, 0, 0.3),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.05) !important;
+}
+
+.dark .filter-button:hover {
+  background: rgba(255, 255, 255, 0.1) !important;
+  box-shadow:
+    0 4px 12px 0 rgba(0, 0, 0, 0.4),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.08) !important;
+}
+
+.dark .filter-button-active {
+  background: rgba(var(--color-primary-500), 0.25) !important;
+  border-color: rgba(var(--color-primary-500), 0.5) !important;
+  color: rgb(var(--color-primary-400)) !important;
+  box-shadow:
+    0 2px 8px 0 rgba(var(--color-primary-500), 0.4),
+    0 0 0 1px rgba(var(--color-primary-500), 0.3),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.08),
+    inset 0 -1px 2px 0 rgba(var(--color-primary-500), 0.2) !important;
+}
+
+.dark .filter-button-active:hover {
+  background: rgba(var(--color-primary-500), 0.3) !important;
+  border-color: rgba(var(--color-primary-500), 0.6) !important;
+  box-shadow:
+    0 4px 12px 0 rgba(var(--color-primary-500), 0.5),
+    0 0 0 1px rgba(var(--color-primary-500), 0.4),
+    inset 0 1px 1px 0 rgba(255, 255, 255, 0.1),
+    inset 0 -1px 2px 0 rgba(var(--color-primary-500), 0.25) !important;
+}
 </style>