body { font-family: 'Segoe UI', Tahoma, sans-serif; background-color: #f4f7f6; margin: 0; display: flex; justify-content: center; align-items: center; height: 100vh; }
        .auth-container { background: #fff; padding: 30px; border-radius: 10px; box-shadow: 0 4px 15px rgba(0,0,0,0.1); width: 100%; max-width: 400px; }
        .auth-container h2 { text-align: center; color: #6f42c1; margin-bottom: 20px; }
        .form-group { margin-bottom: 15px; }
        .form-group label { display: block; margin-bottom: 5px; font-weight: bold; color: #333; }
        .form-group input { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 5px; box-sizing: border-box; font-family: inherit; }
        .btn-submit { width: 100%; background-color: #6f42c1; color: white; padding: 10px; border: none; border-radius: 5px; font-size: 16px; cursor: pointer; transition: 0.3s; }
        .btn-submit:hover { background-color: #5a32a3; }
        .auth-links { text-align: center; margin-top: 15px; font-size: 14px; }
        .auth-links a { color: #007bff; text-decoration: none; }
        .auth-links a:hover { text-decoration: underline; }
        .alert { padding: 10px; border-radius: 5px; margin-bottom: 15px; display: none; text-align: center; }
        .alert.success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
        .alert.error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }