add form site

src/app/not-found.tsx

@@ -0,0 +1,29 @@
+import Link from "next/link"
+
+export default function NotFound() {
+  return (
+    <div className="min-h-screen bg-gray-50 flex items-center justify-center p-4">
+      <div className="text-center">
+        <div className="w-24 h-24 bg-gray-100 rounded-full flex items-center justify-center mx-auto mb-6">
+          <svg className="w-12 h-12 text-gray-400" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9.172 16.172a4 4 0 015.656 0M9 10h.01M15 10h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z" />
+          </svg>
+        </div>
+        <h1 className="text-4xl font-bold text-gray-900 mb-2">404</h1>
+        <h2 className="text-xl font-semibold text-gray-700 mb-4">Page non trouvée</h2>
+        <p className="text-gray-600 mb-8 max-w-md">
+          Désolé, la page que vous recherchez n&apos;existe pas ou a été déplacée.
+        </p>
+        <Link
+          href="/"
+          className="inline-flex items-center px-6 py-3 bg-blue-600 text-white rounded-lg hover:bg-blue-700 transition-colors font-medium"
+        >
+          <svg className="w-5 h-5 mr-2" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M3 12l2-2m0 0l7-7 7 7M5 10v10a1 1 0 001 1h3m10-11l2 2m-2-2v10a1 1 0 01-1 1h-3m-6 0a1 1 0 001-1v-4a1 1 0 011-1h2a1 1 0 011 1v4a1 1 0 001 1m-6 0h6" />
+          </svg>
+          Retour à l&apos;accueil
+        </Link>
+      </div>
+    </div>
+  )
+}