refactor: migrate from hardcoded hex colors to Tailwind CSS color tokens

Replace all hardcoded hex color values with semantic Tailwind design tokens:
- `#bb5b3e` → `accent`
- `#a34a31` → `accent-content` / `primary-dark`
- `#4a3f3b`, `#89726c` → `zinc-800`, `zinc-500`
- `#e5ded7`, `#faf6f3` → `zinc-300`, `zinc-50`
- `#8

resources/js/views/dashboard/SavedStations.vue

@@ -1,12 +1,12 @@
 <template>
     <div class="space-y-6">
-        <h1 class="text-2xl font-black text-[#4a3f3b]">Saved Stations</h1>
+        <h1 class="text-2xl font-black text-zinc-800">Saved Stations</h1>
 
         <div v-if="loading" class="space-y-2">
-            <div v-for="i in 3" :key="i" class="h-16 bg-white rounded-xl animate-pulse border border-[#e5ded7]"></div>
+            <div v-for="i in 3" :key="i" class="h-16 bg-white rounded-xl animate-pulse border border-zinc-300"></div>
         </div>
 
-        <div v-else-if="savedStations.length === 0" class="p-8 bg-white rounded-2xl border border-[#e5ded7] text-center text-[#89726c]">
+        <div v-else-if="savedStations.length === 0" class="p-8 bg-white rounded-2xl border border-zinc-300 text-center text-zinc-500">
             <iconify-icon icon="lucide:bookmark" class="text-3xl mb-2"></iconify-icon>
             <p class="font-medium">No saved stations yet.</p>
             <p class="text-sm mt-1">Search for fuel and bookmark stations to see them here.</p>
@@ -16,11 +16,11 @@
             <div
                 v-for="station in savedStations"
                 :key="station.station_id"
-                class="flex items-center justify-between p-4 bg-white rounded-xl border border-[#e5ded7]"
+                class="flex items-center justify-between p-4 bg-white rounded-xl border border-zinc-300"
             >
                 <div>
-                    <p class="font-bold text-[#4a3f3b]">{{ station.name }}</p>
-                    <p class="text-sm text-[#89726c]">{{ station.postcode }}</p>
+                    <p class="font-bold text-zinc-800">{{ station.name }}</p>
+                    <p class="text-sm text-zinc-500">{{ station.postcode }}</p>
                 </div>
                 <button
                     @click="remove(station.station_id)"