<!DOCTYPE html>
<html>
<head>
    <title>404 Not Found</title>
    <style>
        body { font-family: Arial, sans-serif; text-align: center; padding: 50px; background: #f4f6f8; }
        h1 { font-size: 50px; color: #e74c3c; }
        p { font-size: 20px; }
        a { text-decoration: none; color: #3498db; }
    </style>
</head>
<body>
    <h1>404</h1>
    <p>Sorry, the page you are looking for could not be found.</p>
    <p><a href="<?= site_url() ?>">Go to Homepage</a></p>
</body>
</html>
