.checkout-btn{position:relative;overflow:hidden}.checkout-btn::before{content:'';position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,rgba(255,255,255,0) 0,rgba(255,255,255,.2) 50%,rgba(255,255,255,0) 100%);transition:all .6s;z-index:1}.checkout-btn:hover::before{left:100%}.checkout-btn:disabled::before,.checkout-btn[disabled]::before{display:none!important}.checkout-btn:disabled:hover::before,.checkout-btn[disabled]:hover::before{left:-100%!important}.cart-quantity{display:inline-block;transition:all .3s ease}.cart-quantity.updating{animation:quantityPulse .6s ease}@keyframes quantityPulse{0%{transform:scale(1)}50%{transform:scale(1.2);color:var(--primary-color)}100%{transform:scale(1)}}.cart-item{transition:all .3s ease}.cart-item:hover{background-color:rgba(76,175,80,.05);transform:translateX(3px)}.empty-cart-message{position:relative;padding:20px;text-align:center}.empty-cart-message::before{content:'🛒';display:block;font-size:24px;margin-bottom:10px;animation:emptyCartBounce 2s infinite ease-in-out}@keyframes emptyCartBounce{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}.demo-success{text-align:center;transform:scale(.8);opacity:0;animation:successAppear .5s .2s forwards}@keyframes successAppear{to{transform:scale(1);opacity:1}}.demo-success i{font-size:60px;color:var(--primary-color);display:block;margin-bottom:20px;transform:scale(0);animation:checkmarkAppear .5s .5s forwards cubic-bezier(.175,.885,.32,1.275)}@keyframes checkmarkAppear{from{transform:scale(0)}to{transform:scale(1.2)}}.close-checkout-btn{margin-top:20px;transition:all .3s ease}.close-checkout-btn:hover{background-color:var(--primary-color);color:#fff;transform:translateY(-2px);box-shadow:0 4px 8px rgba(76,175,80,.3)}.cart-item-img{transition:all .3s ease}.cart-item:hover .cart-item-img{transform:rotate(5deg)}.continue-shopping-btn{position:relative;transition:all .3s ease}.continue-shopping-btn::after{content:'→';position:absolute;opacity:0;right:10px;transition:all .3s ease}.continue-shopping-btn:hover::after{opacity:1;right:20px}