shivam + claude changes

app/not-found.tsx

@@ -0,0 +1,18 @@
+import Link from 'next/link';
+
+export default function NotFound() {
+    return (
+        <div className="min-h-[60vh] flex flex-col items-center justify-center px-6 text-center animate-fade-in">
+            <h1 className="text-6xl font-bold tracking-tight text-zinc-900 dark:text-zinc-50 mb-4">404</h1>
+            <p className="text-lg text-zinc-500 dark:text-zinc-400 mb-8">
+                This page doesn&apos;t exist.
+            </p>
+            <Link
+                href="/"
+                className="text-sm font-medium text-zinc-900 dark:text-zinc-100 underline decoration-zinc-300 dark:decoration-zinc-700 underline-offset-4 hover:decoration-zinc-900 dark:hover:decoration-zinc-100 transition-all"
+            >
+                &larr; Back to home
+            </Link>
+        </div>
+    );
+}