@keyframes slideIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.product-button{transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.product-button:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.product-button:hover:before{left:100%}.product-button:hover{transform:translateY(-2px);box-shadow:0 10px 25px #00000026}.search-input{position:relative}.search-input:focus{box-shadow:0 0 0 3px #3b82f61a;border-color:#3b82f6}.cart-item{animation:slideIn .3s ease-out}.cart-item:hover{background:linear-gradient(135deg,#f8fafc,#e2e8f0)}.quantity-btn{transition:all .2s ease}.quantity-btn:active{transform:scale(.95)}.quantity-btn:hover{transform:scale(1.1);box-shadow:0 4px 12px #00000026}.stock-indicator{position:relative}.stock-indicator:after{content:"";position:absolute;top:-2px;right:-2px;width:8px;height:8px;border-radius:50%;animation:pulse 2s infinite}.stock-high:after{background-color:#10b981}.stock-medium:after{background-color:#f59e0b}.stock-low:after{background-color:#ef4444}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0006}.calculator{background:#fffffff2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.2)}.calculator-btn{transition:all .2s ease;position:relative;overflow:hidden}.calculator-btn:active{transform:scale(.95)}.calculator-btn:after{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff4d;transform:translate(-50%,-50%);transition:width .3s,height .3s}.calculator-btn:active:after{width:100px;height:100px}.stats-card{background:linear-gradient(135deg,#667eea,#764ba2);position:relative;overflow:hidden}.stats-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(45deg,transparent 30%,rgba(255,255,255,.1) 50%,transparent 70%);transform:translate(-100%);transition:transform .6s}.stats-card:hover:before{transform:translate(100%)}.favorite-btn{transition:all .3s ease}.favorite-btn.active{animation:pulse .6s ease-in-out;color:#fbbf24}.custom-scrollbar::-webkit-scrollbar{width:6px}.custom-scrollbar::-webkit-scrollbar-track{background:#f1f5f9;border-radius:3px}.custom-scrollbar::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.custom-scrollbar::-webkit-scrollbar-thumb:hover{background:#94a3b8}.keyboard-shortcut{background:linear-gradient(145deg,#fff,#e2e8f0);box-shadow:inset 2px 2px 5px #d1d5db,inset -2px -2px 5px #fff;border:1px solid #e5e7eb}.loading-spinner{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.toast-notification{animation:slideIn .3s ease-out;box-shadow:0 10px 25px #0000001a}@media(max-width:768px){.product-grid{grid-template-columns:repeat(2,1fr)}.cart-panel{position:fixed;bottom:0;left:0;right:0;max-height:50vh;border-radius:20px 20px 0 0}}@media(prefers-color-scheme:dark){.calculator{background:#1e293bf2;border:1px solid rgba(148,163,184,.2)}.custom-scrollbar::-webkit-scrollbar-track{background:#334155}.custom-scrollbar::-webkit-scrollbar-thumb{background:#64748b}.keyboard-shortcut{background:linear-gradient(145deg,#334155,#1e293b);box-shadow:inset 2px 2px 5px #1e293b,inset -2px -2px 5px #475569;border:1px solid #475569}}.checkout-success{animation:pulse .5s ease-in-out 3}.money-animation{position:relative}.money-animation:after{content:"💰";position:absolute;top:-20px;right:-10px;animation:bounce 1s ease-in-out infinite}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.success-indicator{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 4px 15px #10b9814d}.warning-indicator{background:linear-gradient(135deg,#f59e0b,#d97706);box-shadow:0 4px 15px #f59e0b4d}.error-indicator{background:linear-gradient(135deg,#ef4444,#dc2626);box-shadow:0 4px 15px #ef44444d}*{transition:background-color .3s ease,border-color .3s ease,color .3s ease}