Improve video browsing experience with responsive scrolling and layout adjustments

Update UI elements for better navigation and content display, including responsive scrolling in category rows, adjusted margins, and optimized video card widths for various screen sizes. Also enhances the overall layout with wider containers for improved viewing.

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-5304fa9790c5/0CzYEcy

client/src/pages/home.tsx

@@ -77,7 +77,7 @@ export default function Home() {
     <div className="has-fixed-header lg:mx-[38px]" style={{minHeight: '100vh', background: 'linear-gradient(135deg, hsl(250, 50%, 15%) 0%, hsl(240, 30%, 25%) 100%)', color: 'white'}}>
       {/* STICKY HEADER */}
       <div className="header-sticky bg-transparent overflow-hidden">
-        <div className="max-w-5xl mx-auto px-4 py-4">
+        <div className="max-w-7xl mx-auto px-4 py-4">
           <div className="flex items-center justify-between">
             {/* Left side - Logo */}
             <div className="flex items-center space-x-4">