<!DOCTYPE html><html><head><meta charset="UTF-8"><title>404 – Not Found</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css">
</head><body class="d-flex align-items-center justify-content-center" style="min-height:100vh;background:#f0f2f5">
<div class="text-center"><div style="font-size:5rem">🔍</div><h2 class="mt-3">404 – Page Not Found</h2>
<p class="text-muted">The page you are looking for doesn't exist.</p>
<a href="<?= APP_URL ?>/dashboard" class="btn btn-primary">Go to Dashboard</a></div>
</body></html>
