/* Style for disabled checkbox label */
input[type="checkbox"]:disabled + label {
    cursor: not-allowed;
    opacity: 0.6;
}

/* Loader animation (previously inline, assumed to be defined) */
.loader {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}