.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;display:flex;flex-direction:column;justify-content:center;align-items:center;z-index:9999}.spinner{border:4px solid #f3f3f3;border-top:4px solid #3498db;border-radius:50%;width:50px;height:50px;animation:spin 1s linear infinite;margin-bottom:4px}.message{color:#fff;font-size:18px;margin-top:10px}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}