*{box-sizing:border-box;margin:0;padding:0}:root{--primary-gradient:linear-gradient(135deg, #667eea 0%, #764ba2 100%);--primary-color:#667eea;--primary-dark:#764ba2;--accent-color:#ff4757;--success-color:#2ecc71;--danger-color:#e74c3c;--text-primary:#333;--text-secondary:#666;--bg-light:#f5f5f5;--white:#fff;--shadow-sm:0 2px 10px #0000001a;--shadow-md:0 4px 6px #0000001a;--shadow-lg:0 10px 20px #00000026;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-pill:25px}body{background:var(--bg-light);color:var(--text-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6}.app-container{flex-direction:column;min-height:100vh;display:flex}.main-content{flex:1;max-width:1200px;margin:2rem auto;padding:0 1rem}.header{background:var(--primary-gradient);color:#fff;z-index:100;box-shadow:var(--shadow-sm);padding:1rem 2rem;position:sticky;top:0}.nav{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;display:flex}.logo{color:#fff;font-size:1.5rem;font-weight:700;text-decoration:none}.nav-links{gap:2rem;list-style:none;display:flex}.nav-links a{color:#fff;border-radius:var(--radius-sm);align-items:center;gap:.25rem;padding:.5rem 1rem;text-decoration:none;transition:background .3s;display:flex}.nav-links a:hover{background:#fff3}.cart-badge{background:var(--accent-color);border-radius:50%;margin-left:.5rem;padding:2px 8px;font-size:.8rem}.hero{background:var(--primary-gradient);color:#fff;text-align:center;border-radius:var(--radius-lg);margin-bottom:2rem;padding:4rem 2rem}.hero h1{margin-bottom:1rem;font-size:2.5rem}.hero p{opacity:.9;font-size:1.2rem}.products-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem;margin-top:2rem;display:grid}.product-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);cursor:pointer;transition:transform .3s,box-shadow .3s;overflow:hidden}.product-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-5px)}.product-image{background:linear-gradient(135deg,#667eea22,#764ba222);justify-content:center;align-items:center;width:100%;height:200px;font-size:4rem;display:flex}.product-info{padding:1.5rem}.product-info h3{margin-bottom:.5rem;font-size:1.2rem}.product-info .description{color:var(--text-secondary);margin-bottom:1rem;font-size:.9rem;line-height:1.5}.product-info .price{color:var(--accent-color);font-size:1.5rem;font-weight:700}.product-info .original-price{color:#999;margin-left:.5rem;font-size:1rem;text-decoration:line-through}.btn{background:var(--primary-gradient);color:#fff;border-radius:var(--radius-md);cursor:pointer;text-align:center;border:none;padding:.8rem 1.5rem;font-size:1rem;text-decoration:none;transition:all .3s;display:inline-block}.btn:hover{transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-secondary{background:#666}.btn-success{background:var(--success-color)}.btn-danger{background:var(--danger-color)}.btn-sm{padding:.5rem 1rem;font-size:.9rem}.btn-block{width:100%;display:block}.category-tabs{flex-wrap:wrap;gap:1rem;margin-bottom:2rem;display:flex}.category-tab{border-radius:var(--radius-pill);cursor:pointer;border:2px solid var(--primary-color);color:var(--primary-color);background:var(--white);padding:.5rem 1.5rem;font-size:1rem;transition:all .3s}.category-tab.active,.category-tab:hover{background:var(--primary-color);color:#fff}.search-bar{gap:1rem;margin-bottom:2rem;display:flex}.search-bar input{border-radius:var(--radius-md);border:2px solid #ddd;flex:1;padding:.8rem 1rem;font-size:1rem}.search-bar input:focus{border-color:var(--primary-color);outline:none}.cart-page{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem}.cart-item{border-bottom:1px solid #eee;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 0;display:flex}.cart-total{color:var(--accent-color);text-align:right;margin-top:1.5rem;font-size:1.5rem;font-weight:700}.order-success{background:var(--white);border-radius:var(--radius-lg);text-align:center;box-shadow:var(--shadow-md);padding:3rem}.order-success h1{color:var(--success-color);margin-bottom:1rem}.order-success .order-id{border-radius:var(--radius-md);background:#f8f9fa;margin:1rem 0;padding:1rem}.skeleton{border-radius:var(--radius-lg);background:linear-gradient(90deg,#f0f0f0 25%,#e0e0e0 50%,#f0f0f0 75%) 0 0/400% 100%;animation:1.5s infinite shimmer}@keyframes shimmer{0%{background-position:-200px 0}to{background-position:200px 0}}.toast{color:#fff;border-radius:var(--radius-md);z-index:1000;background:#333;padding:1rem 2rem;animation:.3s slideIn;position:fixed;bottom:2rem;right:2rem}@keyframes slideIn{0%{opacity:0;transform:translateY(100%)}to{opacity:1;transform:translateY(0)}}.footer{color:#fff;text-align:center;background:#333;margin-top:4rem;padding:2rem}.admin-stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin-bottom:2rem;display:grid}.stat-card{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);text-align:center;padding:1.5rem}.stat-card h3{color:var(--text-secondary);margin-bottom:.5rem;font-size:1rem}.stat-card .stat-value{font-size:2rem;font-weight:700}.form-group{margin-bottom:1.5rem}.form-group label{margin-bottom:.5rem;font-weight:700;display:block}.form-group input,.form-group textarea,.form-group select{border-radius:var(--radius-md);border:2px solid #ddd;width:100%;padding:.8rem;font-size:1rem}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{border-color:var(--primary-color);outline:none}@media (width<=768px){.header{padding:1rem}.nav{flex-direction:column;gap:1rem}.nav-links{flex-wrap:wrap;justify-content:center;gap:.5rem}.nav-links a{padding:.4rem .8rem;font-size:.9rem}.hero{padding:2rem 1rem}.hero h1{font-size:1.8rem}.hero p{font-size:1rem}.products-grid{grid-template-columns:1fr}.search-bar{flex-direction:column}.cart-item{flex-direction:column;align-items:flex-start;gap:.5rem}.cart-total{text-align:left}.order-success{padding:1.5rem}.main-content{margin:1rem auto}}@media (width<=480px){.hero h1{font-size:1.5rem}.product-info{padding:1rem}.product-info h3{font-size:1rem}.product-info .price{font-size:1.2rem}.category-tab{padding:.4rem 1rem;font-size:.9rem}}.product-detail{background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:2rem}.product-detail-header{grid-template-columns:1fr 1fr;gap:2rem;margin-bottom:2rem;display:grid}.product-detail-image{border-radius:var(--radius-lg);background:linear-gradient(135deg,#667eea22,#764ba222);justify-content:center;align-items:center;width:100%;height:300px;font-size:6rem;display:flex}.product-detail-info h1{margin-bottom:1rem;font-size:2rem}.product-detail-info .price{color:var(--accent-color);margin-bottom:1rem;font-size:2rem;font-weight:700}.product-detail-info .description{color:var(--text-secondary);margin-bottom:2rem;line-height:1.6}.quantity-selector{align-items:center;gap:1rem;margin-bottom:1.5rem;display:flex}.quantity-selector button{border:2px solid var(--primary-color);width:40px;height:40px;color:var(--primary-color);cursor:pointer;background:#fff;border-radius:50%;font-size:1.2rem;transition:all .3s}.quantity-selector button:hover{background:var(--primary-color);color:#fff}.quantity-selector span{text-align:center;min-width:40px;font-size:1.2rem;font-weight:700}@media (width<=768px){.product-detail-header{grid-template-columns:1fr}.product-detail-info h1{font-size:1.5rem}}.empty-state{text-align:center;color:var(--text-secondary);padding:3rem}.loading-spinner{justify-content:center;align-items:center;padding:3rem;display:flex}.loading-spinner:after{content:"";border:4px solid #ddd;border-top-color:var(--primary-color);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}