Make content row titles uppercase and bolder

Changed section titles (Featured Films, etc.) to:
- Uppercase with 'uppercase' class
- font-bold on mobile, font-extrabold on desktop
- More prominent and attention-grabbing

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/ContentRow.vue

@@ -1,6 +1,6 @@
 <template>
   <div class="content-row">
-    <h2 class="text-xl md:text-2xl font-semibold text-white mb-4 px-4">
+    <h2 class="text-xl md:text-2xl font-bold md:font-extrabold text-white mb-4 px-4 uppercase">
       {{ title }}
     </h2>