feat(web): redesign navigation with centered logo and smooth page transitions

- Replace sidebar nav with centered header featuring PAC-MAN title
- Add glimmer animation effect for non-active logo state
- Implement 200ms fade transitions between pages
- Add custom scrollbar styling with OverlayScrollbars
- Switch to Russo One font for title, Outfit for body text

web/pages/index/+Layout.tsx

@@ -2,8 +2,8 @@ import "../../layouts/tailwind.css";
 
 export default function GameLayout({ children }: { children: React.ReactNode }) {
   return (
-    <div className="bg-black text-yellow-400 min-h-screen flex flex-col">
-      <main className="flex-1">{children}</main>
+    <div className="bg-black text-yellow-400 h-full flex flex-col overflow-hidden">
+      <main className="flex-1 overflow-hidden">{children}</main>
     </div>
   );
 }