.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(33, 33, 33, 0.3);
    backdrop-filter: blur(10px);
    padding: 15px 20px;
    z-index: 1000;
    border-bottom: 2px solid #007bff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header h1 {
    color: #fff;
    text-align: center;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    margin: 0;
}

.back-button {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    text-decoration: none;
    background-color: #007bff;
    padding: 8px 16px;
    border-radius: 5px;
    transition: background-color 0.3s;
    font-size: 14px;
}

.back-button:hover {
    background-color: #0056b3;
}

body {
    font-family: sans-serif;
    background-color: #333;
    background-image: url('../images/applin_background.png');
    background-size: cover;
    background-position: center 30px;
    background-repeat: no-repeat;
    color: #333;
    margin: 0;
    padding: 0;
    padding-top: 80px; /* Add padding to prevent content from being hidden by the fixed header */
}

.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
    font-weight: bold;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
    text-align: center;
}

label {
    margin-bottom: 5px;
}

.label-note {
    font-size: 0.85rem;
    color: #3a0202;
    font-weight: normal;
    display: block;
}

input[type="text"],
select,
textarea {
    width: 90%;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

.checkbox-group, .radio-group {
    margin-bottom: 10px;
    display: inline-block;
}

.checkbox-group input[type="checkbox"],
.radio-group input[type="radio"] {
    margin-right: 10px;
    vertical-align: middle;
}

.checkbox-group label,
.radio-group label {
    vertical-align: middle;
}

.hidden {
    display: none;
}

button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #0056b3;
}

@media (max-width: 768px) {
    .header {
        padding: 15px;
        flex-direction: column;
        align-items: center;
        text-align: center;
        min-height: 100px;
    }

    .back-button {
        position: static;
        transform: none;
        margin-bottom: 15px;
        font-size: 16px;
        padding: 10px 20px;
        order: -1;
        align-self: center;
    }

    .header h1 {
        font-size: 1.5rem;
        margin: 0;
        order: 1;
    }

    body {
        padding-top: 140px;
    }

    .container {
        width: 100%;
        margin: 10px 0;
        padding: 20px;
        max-width: none;
        border-radius: 0;
        box-sizing: border-box;
    }

    .form-group {
        text-align: left;
        margin-bottom: 25px;
    }

    input[type="text"],
    select,
    textarea {
        width: 100%;
        box-sizing: border-box;
        font-size: 16px;
        margin: 8px 0;
    }

    .checkbox-group, .radio-group {
        display: block;
        margin-bottom: 15px;
        text-align: left;
        width: 100%;
        padding: 10px 0;
    }

    .checkbox-group input[type="checkbox"],
    .radio-group input[type="radio"] {
        margin-right: 15px;
        transform: scale(1.3);
        vertical-align: middle;
    }

    .checkbox-group label,
    .radio-group label {
        font-size: 16px;
        line-height: 1.4;
        cursor: pointer;
        vertical-align: middle;
        display: inline-block;
        width: calc(100% - 40px);
    }

    button {
        font-size: 18px;
        padding: 15px;
        margin-top: 20px;
    }

    .label-note {
        font-size: 0.9rem;
        margin-top: 5px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 12px;
        min-height: 90px;
    }

    .back-button {
        font-size: 14px;
        padding: 8px 16px;
        margin-bottom: 12px;
    }

    .header h1 {
        font-size: 1.3rem;
    }

    body {
        padding-top: 120px;
    }

    .container {
        width: 100%;
        margin: 0;
        padding: 15px;
        border-radius: 0;
    }

    .form-group {
        margin-bottom: 20px;
    }

    input[type="text"],
    select,
    textarea {
        font-size: 16px;
        padding: 12px;
        margin: 6px 0;
    }

    textarea {
        min-height: 120px;
    }
}