@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(360deg)}}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.6);display:flex;align-items:center;justify-content:center;z-index:9999;display:none}.loading-spinner{width:50px;height:50px;border:5px solid rgba(255,255,255,.3);border-top:5px solid #dc3545;border-radius:50%;animation:spin 1s linear infinite}