Reduce header and footer padding for a more compact layout

Adjusts padding in Footer.tsx (px-4 to px-2, py-1 to py-0.5) and Header.tsx (px-4 to px-2) for reduced horizontal and vertical spacing.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 930e9607-8d85-4ad9-8702-a48ff4cef074
Replit-Commit-Checkpoint-Type: full_checkpoint

client/src/components/Header.tsx

@@ -49,7 +49,7 @@ export default function Header() {
   return (
     <>
       <header className="bg-white border-b border-gray-200 sticky top-0 z-50">
-        <div className="max-w-7xl mx-auto px-4 py-4">
+        <div className="max-w-7xl mx-auto px-2 py-4">
           <div className="flex items-center justify-between">
             <div className="flex items-center">
               <a href="/" data-testid="logo-link">