.loader{border:6px solid #f3f3f3;border-top:6px solid #007bff;border-radius:50%;width:40px;height:40px;animation:spin .8s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:#fff9;display:flex;align-items:center;justify-content:center;z-index:9999}