.checkout-loading-overlay{display:none;position:fixed;z-index:999999;top:0;left:0;width:100%;height:100%;background:rgba(255,255,255,.85);align-items:center;justify-content:center}.checkout-loading-overlay.active{display:flex}.checkout-loading-content{text-align:center;font-size:16px}.checkout-loading-spinner{width:40px;height:40px;margin:0 auto 15px;border:4px solid #ddd;border-top:4px solid #333;border-radius:50%;animation:checkout-spin 0.8s linear infinite}@keyframes checkout-spin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}