#spinner-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(255,255,255,0);z-index:9999;justify-content:center;align-items:center}#spinner-overlay.active{display:flex}.spinner{width:48px;height:48px;border:5px solid #999;border-top:5px solid #007bff;border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}