body {
            background-color: #121212;
            color: #ffffff;
            font-family: 'Roboto', sans-serif;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
            margin: 0;
        }

        .container {
            background-color: #000000;
            padding: 40px;
            border-radius: 15px;
            box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
            max-width: 400px;
            width: 100%;
            text-align: center;
        }

        img {
            width: 150px;
            margin-bottom: 20px;
        }

        form {
            display: flex;
            flex-direction: column;
            align-items: stretch;
        }

        label {
            margin-bottom: 10px;
            color: #b3b3b3;
            text-align: left;
        }

        input[type="text"] {
            width: 100%;
            padding: 12px;
            margin-bottom: 20px;
            border: 1px solid #444;
            border-radius: 5px;
            background-color: #2a2a2a;
            color: #ffffff;
            box-sizing: border-box;
            font-size: 16px;
        }

        button {
            width: 100%;
            padding: 15px;
            border: none;
            border-radius: 5px;
            background-color: #3b82f6;
            color: #ffffff;
            font-size: 18px;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }

        button:hover {
            background-color: #2563eb;
        }

        .error {
            color: #e74c3c;
            margin-bottom: 20px;
        }

        .signup-link {
            display: block;
            margin-top: 15px;
            color: #3b82f6;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .signup-link:hover {
            color: #2563eb;
        }

        .g-recaptcha {
            margin-bottom: 20px;
        }

        /* Media Query untuk layar dengan lebar maksimum 600px */
        @media (max-width: 600px) {
            .container {
                padding: 20px;
            }

            img {
                width: 100px;
                margin-bottom: 15px;
            }

            input[type="text"] {
                font-size: 14px;
            }

            button {
                font-size: 16px;
                padding: 12px;
            }
        }