* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        /* Index Styles */
        body {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
            background-color: #16082f;
            font-family: Arial, sans-serif;
        }

        .container {
            max-width: 768px;
            width: 80%;
            padding: 25px;
            background-color: #f2f2f2;
            border-radius: 8px;
            box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
        }

        h1 {
            text-align: center;
            margin-bottom: 60px;
            color: #333;
            position: relative;
        }

        h1 img.logo {
            width: 4em; /* Ubah ukuran sesuai kebutuhan, misalnya 3em */
            height: auto; /* Biarkan agar gambar proporsional */
            position: absolute;
            top: %;
            left: 50%;
            transform: translate(-50%, -50%);
        }

        p.error-message {
            margin-bottom: 10px;
            color: red;
        }

        form {
            margin-bottom: 60px;
        }

        label {
            display: block;
            margin-bottom: 8px;
            color: #333;
        }

        input[type="text"],
        input[type="password"] {
            width: 100%;
            padding: 10px;
            margin-bottom: 10px;
            border: 1px solid #ccc;
            border-radius: 8px;
        }

        input[type="submit"] {
            background-color: #4CAF50;
            color: white;
            padding: 8px 16px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            width: 100%;
        }

        /* Responsive Styles */
        @media only screen and (max-width: 600px) {
            .container {
                max-width: 100%;
            }

            h1 {
                font-size: 24px;
            }

            input[type="submit"] {
                padding: 10px 14px;
            }
        }

        /* Efek latar belakang */
        section {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
            z-index: -1;
        }

        .air {
            position: absolute;
            width: 100px;
            height: 100px;
            border-radius: 50%;
            opacity: 0.3;
        }

        .air1 {
            background-color: #ff0000;
            top: 20%;
            left: 20%;
        }

        .air2 {
            background-color: #00ff00;
            top: 20%;
            right: 20%;
        }

        .air3 {
            background-color: #0000ff;
            bottom: 20%;
            left: 20%;
        }

        .air4 {
            background-color: #ffff00;
            bottom: 20%;
            right: 20%;
        }