Added 404, 500 & Dashboard Page

app/error.tsx

@@ -0,0 +1,75 @@
+'use client';
+
+import { useEffect } from 'react';
+import Link from 'next/link';
+import Image from 'next/image';
+
+interface ErrorProps {
+  error: Error & { digest?: string };
+  reset: () => void;
+}
+
+export default function Error({ error, reset }: ErrorProps) {
+  useEffect(() => {
+    // Log l'erreur dans la console/terminal
+    console.error('Erreur serveur:', error);
+  }, [error]);
+
+  return (
+    <div className="min-h-screen flex items-center justify-center bg-cwhite">
+      <div className="text-center px-4">
+        {/* Logo */}
+        <div className="flex justify-center mb-8">
+          <Image
+            src="/logo.svg"
+            alt="MAD Logo"
+            width={120}
+            height={120}
+          />
+        </div>
+
+        {/* 500 Content */}
+        <div className="max-w-md mx-auto">
+          <h1 className="text-9xl font-bold text-lorange mb-4">500</h1>
+          <h2 className="text-3xl font-semibold text-gray-900 mb-4">
+            Erreur serveur
+          </h2>
+          <p className="text-gray-600 mb-2">
+            Une erreur inattendue s'est produite sur le serveur.
+          </p>
+          {error.message && (
+            <p className="text-sm text-gray-500 mb-8 font-mono bg-gray-100 p-3 rounded-lg">
+              {error.message}
+            </p>
+          )}
+          {!error.message && (
+            <p className="text-gray-600 mb-8">
+              Veuillez réessayer dans quelques instants.
+            </p>
+          )}
+
+          {/* Action Buttons */}
+          <div className="flex flex-col sm:flex-row gap-4 justify-center">
+            <button
+              onClick={reset}
+              className="inline-flex items-center justify-center px-6 py-3 border border-transparent rounded-lg text-sm font-medium text-white bg-lorange hover:bg-dorange focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-lorange transition-colors"
+            >
+              Réessayer
+            </button>
+            <Link
+              href="/dashboard"
+              className="inline-flex items-center justify-center px-6 py-3 border border-gray-300 rounded-lg text-sm font-medium text-gray-700 bg-white hover:bg-gray-50 focus:outline-none focus:ring-2 focus:ring-offset-2 focus:ring-lorange transition-colors"
+            >
+              Retour au tableau de bord
+            </Link>
+          </div>
+        </div>
+
+        {/* Footer */}
+        <div className="mt-12 text-center text-xs text-gray-500">
+          © 2025 MAD - <a href="https://legouix.dev" target="_blank" className="text-lblue hover:text-dblue">Propulsé par LGX</a>
+        </div>
+      </div>
+    </div>
+  );
+}