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

.loading-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
    animation: spin 1s linear infinite;
}

.show-loading {
    opacity: 1;
}

.hide-loading {
    opacity: 0;
    pointer-events: none;
}