Adjust layout to improve content visibility on various screens

Modify maximum width of category rows and main content area for better responsiveness.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 8e9f2b36-ec9c-4acc-b19b-5304fa9790c5
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/8e9f2b36-ec9c-4acc-b19b-5304fa9790c5/3f1nxbo

client/src/pages/home.tsx

@@ -168,7 +168,7 @@ export default function Home() {
         )}
       </div>
 
-      <main className="max-w-6xl mx-auto pt-4 pb-8 relative">
+      <main className="max-w-4xl mx-auto pt-4 pb-8 relative px-4">
         
         {/* Trikotniki na robovih - dvignjeni višje */}
         <div className="absolute top-2 right-2 w-0 h-0 border-l-[70px] border-l-transparent border-r-[70px] border-r-transparent border-b-[100px] border-b-blue-400/8 rotate-12 z-0"></div>