Enhance video card hover effect with increased scale and overflow visibility

Update `VideoCard` component to add a hover effect that scales the card and manages body class for CSS-based overflow visibility. Modify CSS to apply scale and ensure overflow visibility on parent elements when the `video-card-hovered` class is present on the body.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 2eb1084e-b728-4449-9231-f1665924c8d5
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/2eb1084e-b728-4449-9231-f1665924c8d5/kdQ95gE

client/src/components/video-card.tsx

@@ -171,8 +171,14 @@ export default function VideoCard({ video, onClick, className = "" }: VideoCardP
         zIndex: isHovered ? 999999 : 1,
         position: 'relative'
       }}
-      onMouseEnter={() => setIsHovered(true)}
-      onMouseLeave={() => setIsHovered(false)}
+      onMouseEnter={() => {
+        setIsHovered(true);
+        document.body.classList.add('video-card-hovered');
+      }}
+      onMouseLeave={() => {
+        setIsHovered(false);
+        document.body.classList.remove('video-card-hovered');
+      }}
     >
       {/* Video preview container */}
       <div