.quantity-control{max-width:100px;margin:0 auto}.card{border-radius:10px;overflow:hidden}.card-header{border-bottom:1px solid rgba(0,0,0,.05);font-weight:600}.badge-primary{background-color:#007bff;font-size:14px;padding:8px 12px}#checkout-button{border-radius:8px;padding:12px;font-weight:600;box-shadow:0 4px 6px #0000001a;transition:all .3s ease}#checkout-button:hover{transform:translateY(-2px);box-shadow:0 6px 8px #00000026}.loading-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;display:flex;justify-content:center;align-items:center;z-index:9999}.loading-content{background-color:#fff;padding:20px;border-radius:8px;text-align:center;box-shadow:0 4px 8px #0003}#cart-items .list-group-item{transition:background-color .2s ease}#cart-items .list-group-item:hover{background-color:#007bff0d}#coupon-form .input-group{border-radius:8px;overflow:hidden}.cart-addons.loading{position:relative;pointer-events:none;opacity:.7}.cart-addons.loading:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:#ffffffb3;display:flex;justify-content:center;align-items:center;z-index:10}.cart-addons.loading:before{content:"";position:absolute;top:50%;left:50%;width:30px;height:30px;margin:-15px 0 0 -15px;border:3px solid #f3f3f3;border-top:3px solid #3498db;border-radius:50%;animation:spin 1s linear infinite;z-index:11}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}