html, body {
            height: 100%;
            margin: 0;
            padding: 0;
            overflow: hidden; /* Mencegah scroll */
        }
        body {
            font-family: Arial, sans-serif;
            background: #f5f5f5;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .login-box {
            background: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: 0 0 10px rgba(0,0,0,0.2);
            width: 90%; /* Lebih responsif */
            max-width: 400px;
            box-sizing: border-box;
            margin: 20px; /* Memberi jarak di perangkat kecil */
        }
        .login-box h2 {
            text-align: center;
            margin-bottom: 20px;
            font-size: 1.5rem;
        }
        form {
            display: flex;
            flex-direction: column;
        }
        input[type="password"],
        input[type="submit"] {
            padding: 12px;
            margin-bottom: 15px;
            font-size: 16px;
            border: 1px solid #ccc;
            border-radius: 5px;
            box-sizing: border-box;
            width: 100%;
        }
        input[type="submit"] {
            background-color: #3498db;
            color: white;
            cursor: pointer;
            border: none;
            transition: background-color 0.3s;
        }
        input[type="submit"]:hover {
            background-color: #2980b9;
        }
        .error {
            color: red;
            text-align: center;
            margin-top: -10px;
            margin-bottom: 10px;
            font-size: 0.9rem;
        }
        
        /* Responsive adjustments */
        @media (max-width: 480px) {
            .login-box {
                padding: 20px;
            }
            .login-box h2 {
                font-size: 1.3rem;
                margin-bottom: 15px;
            }
            input[type="password"],
            input[type="submit"] {
                padding: 10px;
                font-size: 15px;
            }
        }