UI: Glass effect everywhere, fix nav height, simplify quote form

- Fixed nav height (h-20), logo and user menu aligned to top
- Quote form: removed colored circles, simple labels, search button inside pill
- Panels closer to nav (top-4 instead of top-20)
- Glass effect on all overlays (bg-base-100/70 backdrop-blur-md)
- Selection panel sticky headers with glass effect

app/components/catalog/SelectionPanel.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="flex flex-col gap-3">
     <!-- Header (sticky at top) -->
-    <div class="flex items-center justify-between sticky top-0 bg-base-300/95 -mx-4 px-4 py-2 -mt-4 z-10">
+    <div class="flex items-center justify-between sticky top-0 bg-base-100/80 backdrop-blur-sm -mx-4 px-4 py-2 -mt-4 z-10">
       <h3 class="font-semibold text-lg">{{ title }}</h3>
       <button class="btn btn-ghost btn-sm btn-circle" @click="emit('close')">
         <Icon name="lucide:x" size="18" />
@@ -9,7 +9,7 @@
     </div>
 
     <!-- Search input (sticky below header) -->
-    <div class="sticky top-10 bg-base-300/95 -mx-4 px-4 pb-2 z-10">
+    <div class="sticky top-10 bg-base-100/80 backdrop-blur-sm -mx-4 px-4 pb-2 z-10">
       <input
         v-model="searchQuery"
         type="text"