/* frontend.css */
.custom-addon-fields {
    padding: 20px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    margin-bottom: 25px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.custom-addon-field {
    margin-bottom: 20px;
}

.custom-addon-field label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 15px;
    color: #333;
}

.custom-addon-choice {
    width: 100%;
    max-width: 300px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
    background: #fff;
    transition: border-color 0.2s;
}

.custom-addon-choice:focus {
    border-color: #0073aa;
    outline: none;
}

.custom-addon-date,
.custom-addon-time {
    width: 150px;
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

.ui-datepicker {
    font-size: 14px;
    background: #fff;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.ui-datepicker-header {
    background: #f5f5f5;
    border-bottom: 1px solid #ddd;
    padding: 8px;
}

.custom-addon-field select:invalid {
    color: #999;
}

.custom-addon-field select:required:invalid + .error-message {
    display: block;
    color: #d63638;
    font-size: 12px;
    margin-top: 5px;
}

/* Responsive design */
@media (max-width: 600px) {
    .custom-addon-choice,
    .custom-addon-date,
    .custom-addon-time {
        max-width: 100%;
        width: 100%;
    }

    .custom-addon-fields {
        padding: 15px;
    }
}