Implement experimenta product listing page and enhance navigation components

- Added a new page for displaying experimenta annual passes, integrating ProductCard and ProductGrid components for product presentation.
- Updated API to filter products by category, allowing for specific product queries.
- Enhanced navigation components, including AreaTabs and RoleSwitcher, to improve user experience and accessibility.
- Refactored existing components for better styling consistency and responsiveness.
- Improved dropdown menu components with updated styles and hover effects for better usability.

app/pages/experimenta/index.vue

@@ -0,0 +1,142 @@
+<script setup lang="ts">
+/**
+ * experimenta Products Listing Page
+ *
+ * Displays experimenta annual passes using ProductCard and ProductGrid components.
+ * Fetches only experimenta category products from the database via API.
+ */
+
+// Page metadata
+definePageMeta({
+  layout: 'default',
+})
+
+// Type definition for product
+interface Product {
+  id: string
+  navProductId: string
+  name: string
+  description: string
+  price: string
+  stockQuantity: number
+  category: string
+  active: boolean
+  createdAt: Date
+  updatedAt: Date
+}
+
+// Fetch products from API - only experimenta passes
+const { data: products, error, pending } = await useFetch<Product[]>('/api/products', {
+  query: {
+    category: 'annual-pass',
+  },
+})
+
+// Map product categories to badges
+const getBadge = (category: string): string | undefined => {
+  const badges: Record<string, string> = {
+    'annual-pass': 'Beliebt',
+  }
+  return badges[category]
+}
+
+// Map product categories to discount percentages (for demo)
+const getDiscount = (category: string): number | undefined => {
+  const discounts: Record<string, number> = {
+    // No discounts for now
+  }
+  return discounts[category]
+}
+</script>
+
+<template>
+  <NuxtLayout name="default">
+    <div class="min-h-screen bg-gradient-primary px-4 py-12 md:px-6 lg:px-8">
+      <!-- Page Header -->
+      <div class="mx-auto mb-12 max-w-container-wide text-center">
+        <h1 class="mb-4 text-4xl font-bold text-white md:text-5xl">
+          experimenta Jahreskarten
+        </h1>
+        <p class="mx-auto max-w-2xl text-lg text-white/80">
+          Erlebe die Ausstellungswelt der experimenta ein ganzes Jahr lang.
+          Mit freiem Eintritt zu allen Ausstellungen, Science Dome Shows und Sonderausstellungen.
+        </p>
+      </div>
+
+      <!-- Loading State -->
+      <div v-if="pending" class="mx-auto max-w-container-wide text-center">
+        <div class="card-glass inline-block">
+          <p class="text-white/80">Produkte werden geladen...</p>
+        </div>
+      </div>
+
+      <!-- Error State -->
+      <div v-else-if="error" class="mx-auto max-w-container-wide">
+        <div class="card-glass border-red/50 bg-red/10">
+          <h2 class="mb-2 text-xl font-semibold text-red">
+            Fehler beim Laden der Produkte
+          </h2>
+          <p class="text-white/80">
+            {{ error.message || 'Ein unbekannter Fehler ist aufgetreten.' }}
+          </p>
+        </div>
+      </div>
+
+      <!-- Products Grid -->
+      <div v-else-if="products && products.length > 0" class="mx-auto max-w-container-wide">
+        <ProductGrid :columns="3">
+          <ProductCard
+            v-for="product in products"
+            :key="product.id"
+            image="/img/makerspace-jk-2025.jpg"
+            :title="product.name"
+            :description="product.description"
+            :price="Number(product.price)"
+            :badge="getBadge(product.category)"
+            :discount-percentage="getDiscount(product.category)"
+            :product-id="product.id"
+          />
+        </ProductGrid>
+      </div>
+
+      <!-- Empty State -->
+      <div v-else class="mx-auto max-w-container-wide text-center">
+        <div class="card-glass">
+          <h2 class="mb-2 text-xl font-semibold text-white">
+            Keine Produkte verfügbar
+          </h2>
+          <p class="text-white/80">
+            Aktuell sind keine Produkte verfügbar. Bitte schaue später noch einmal vorbei.
+          </p>
+        </div>
+      </div>
+
+      <!-- Info Card -->
+      <div class="mx-auto mt-12 max-w-container-wide">
+        <div class="card-info card-accent-border">
+          <h2 class="mb-3 text-xl font-semibold text-experimenta-accent">
+            Warum eine experimenta Jahreskarte?
+          </h2>
+          <ul class="space-y-2 text-white/90">
+            <li class="flex items-start gap-2">
+              <span class="mt-1 text-experimenta-accent">✓</span>
+              <span>365 Tage unbegrenzter Zugang zur Ausstellungswelt</span>
+            </li>
+            <li class="flex items-start gap-2">
+              <span class="mt-1 text-experimenta-accent">✓</span>
+              <span>Freier Eintritt zu allen Science Dome Shows</span>
+            </li>
+            <li class="flex items-start gap-2">
+              <span class="mt-1 text-experimenta-accent">✓</span>
+              <span>Zugang zu wechselnden Sonderausstellungen</span>
+            </li>
+            <li class="flex items-start gap-2">
+              <span class="mt-1 text-experimenta-accent">✓</span>
+              <span>Flexible Nutzung – komme so oft du möchtest</span>
+            </li>
+          </ul>
+        </div>
+      </div>
+    </div>
+  </NuxtLayout>
+</template>