*,*:before,*:after{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}:root{--primary: #2563EB;--primary-dark: #1D4ED8;--primary-light: #EFF6FF;--green: #10B981;--green-dark: #059669;--green-light: #ECFDF5;--red: #EF4444;--red-light: #FEF2F2;--orange: #F59E0B;--bg: #F1F5F9;--surface: #FFFFFF;--border: #E2E8F0;--text: #1E293B;--text-2: #475569;--text-muted: #94A3B8;--shadow-sm: 0 1px 2px rgba(0,0,0,.08);--shadow: 0 2px 8px rgba(0,0,0,.1);--shadow-lg: 0 8px 24px rgba(0,0,0,.14);--radius: 16px;--radius-sm: 10px;--nav-height: 72px;--header-height: 64px}html{height:100%;height:-webkit-fill-available}body{height:100%;height:-webkit-fill-available;overflow:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.5;touch-action:manipulation;-webkit-font-smoothing:antialiased}#root{height:100%;height:-webkit-fill-available;display:flex;flex-direction:column;overflow:hidden}button{cursor:pointer;border:none;background:none;font-family:inherit;font-size:inherit;color:inherit;touch-action:manipulation}input{font-family:inherit;font-size:16px;color:var(--text);border:none;outline:none;background:none}.app{display:flex;flex-direction:column;height:100%;overflow:hidden}.app-main{flex:1;overflow:hidden;display:flex;flex-direction:column}.header{background:var(--primary);color:#fff;padding:0 16px;height:var(--header-height);display:flex;align-items:center;justify-content:space-between;flex-shrink:0;padding-top:env(safe-area-inset-top)}.header-title{font-size:20px;font-weight:700;letter-spacing:-.3px}.header-subtitle{font-size:13px;opacity:.8;margin-top:1px}.header-action{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#fff3;color:#fff}.bottom-nav{display:flex;background:var(--surface);border-top:1px solid var(--border);box-shadow:0 -2px 12px #00000014;padding-bottom:env(safe-area-inset-bottom);flex-shrink:0;height:calc(var(--nav-height) + env(safe-area-inset-bottom))}.nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;padding:8px 4px;color:var(--text-muted);transition:color .15s;min-height:48px;position:relative}.nav-btn--active{color:var(--primary)}.nav-btn span{font-size:11px;font-weight:500}.nav-icon-wrap{position:relative;line-height:0}.badge{position:absolute;top:-6px;right:-8px;background:var(--red);color:#fff;font-size:10px;font-weight:700;min-width:18px;height:18px;border-radius:9px;display:flex;align-items:center;justify-content:center;padding:0 4px}.nav-total{font-size:10px;font-weight:700;color:var(--green)}.scroll-content{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:16px 16px 96px}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:60px 32px;text-align:center;color:var(--text-muted)}.empty-state svg{opacity:.3}.empty-state h3{font-size:18px;font-weight:600;color:var(--text-2)}.empty-state p{font-size:14px;line-height:1.6}.item-list{display:flex;flex-direction:column;gap:8px}.list-item{background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);display:flex;align-items:center;gap:12px;padding:14px 16px;transition:background .1s;border:1.5px solid transparent;cursor:pointer;width:100%;text-align:left}.list-item:active{background:var(--bg)}.list-item--in-cart{border-color:var(--green);background:var(--green-light)}.item-icon{width:40px;height:40px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.item-icon--cart{background:var(--green-light);color:var(--green)}.item-info{flex:1;min-width:0}.item-name{font-size:16px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-qty-label{font-size:13px;color:var(--text-muted);margin-top:2px}.item-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600;flex-shrink:0}.item-badge--default{background:var(--primary-light);color:var(--primary)}.item-badge--cart{background:var(--green-light);color:var(--green-dark)}.cart-item{background:var(--surface);border-radius:var(--radius-sm);box-shadow:var(--shadow-sm);padding:14px 16px;display:flex;align-items:center;gap:12px}.cart-item-info{flex:1;min-width:0}.cart-item-name{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.cart-item-detail{font-size:13px;color:var(--text-muted);margin-top:2px}.cart-item-subtotal{font-size:16px;font-weight:700;color:var(--primary);flex-shrink:0}.cart-remove-btn{width:32px;height:32px;border-radius:50%;background:var(--red-light);color:var(--red);display:flex;align-items:center;justify-content:center;flex-shrink:0}.total-card{background:var(--primary);color:#fff;border-radius:var(--radius);padding:20px;margin-top:8px;display:flex;align-items:center;justify-content:space-between}.total-label{font-size:14px;opacity:.85}.total-value{font-size:26px;font-weight:800;letter-spacing:-.5px}.total-count{font-size:12px;opacity:.7;margin-top:2px}.fab{position:fixed;bottom:calc(var(--nav-height) + env(safe-area-inset-bottom) + 16px);right:20px;width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;box-shadow:var(--shadow-lg);display:flex;align-items:center;justify-content:center;z-index:10;transition:transform .1s,box-shadow .1s}.fab:active{transform:scale(.94);box-shadow:var(--shadow)}.overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;z-index:100;display:flex;align-items:flex-end;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.sheet{width:100%;background:var(--surface);border-radius:24px 24px 0 0;padding:12px 20px 20px;padding-bottom:max(20px,env(safe-area-inset-bottom));animation:slideUp .28s cubic-bezier(.32,.72,0,1);max-height:90vh;overflow-y:auto}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.sheet-handle{width:40px;height:4px;border-radius:2px;background:var(--border);margin:0 auto 16px}.sheet-title{font-size:18px;font-weight:700;margin-bottom:20px;color:var(--text)}.sheet-item-name{font-size:20px;font-weight:700;margin-bottom:4px}.sheet-item-sub{font-size:14px;color:var(--text-muted);margin-bottom:20px}.form-group{margin-bottom:16px}.form-label{font-size:13px;font-weight:600;color:var(--text-2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:8px;display:block}.form-input-wrap{background:var(--bg);border-radius:var(--radius-sm);border:2px solid var(--border);padding:12px 14px;display:flex;align-items:center;gap:8px;transition:border-color .15s}.form-input-wrap:focus-within{border-color:var(--primary)}.form-input-wrap input{flex:1;background:none;font-size:16px;color:var(--text)}.form-input-wrap .prefix{font-size:16px;font-weight:600;color:var(--text-muted);flex-shrink:0}.stepper{display:flex;align-items:center;gap:0;background:var(--bg);border-radius:var(--radius-sm);border:2px solid var(--border);overflow:hidden}.stepper-btn{width:48px;height:48px;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:300;color:var(--primary);flex-shrink:0;transition:background .1s}.stepper-btn:active{background:var(--primary-light)}.stepper-btn:disabled{color:var(--text-muted)}.stepper-value{flex:1;text-align:center;font-size:18px;font-weight:700;color:var(--text);min-width:40px}.subtotal-preview{background:var(--green-light);border-radius:var(--radius-sm);padding:12px 16px;display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.subtotal-label{font-size:14px;color:var(--green-dark);font-weight:500}.subtotal-value{font-size:20px;font-weight:800;color:var(--green-dark)}.btn{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;padding:15px;border-radius:var(--radius-sm);font-size:16px;font-weight:700;transition:opacity .1s,transform .1s}.btn:active{opacity:.85;transform:scale(.98)}.btn--primary{background:var(--primary);color:#fff}.btn--green{background:var(--green);color:#fff}.btn--ghost{background:var(--bg);color:var(--text-2)}.btn--danger{background:var(--red-light);color:var(--red)}.btn-gap{height:10px}.action-btn{display:flex;align-items:center;gap:14px;width:100%;padding:16px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;margin-bottom:8px;text-align:left;transition:background .1s}.action-btn:active{opacity:.8}.action-btn--green{background:var(--green-light);color:var(--green-dark)}.action-btn--blue{background:var(--primary-light);color:var(--primary-dark)}.action-btn--red{background:var(--red-light);color:var(--red)}.action-btn--cancel{background:var(--bg);color:var(--text-muted);margin-top:4px;justify-content:center}.action-icon{width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:#ffffffb3;flex-shrink:0}.in-cart-badge{display:inline-flex;align-items:center;gap:4px;background:var(--green-light);color:var(--green-dark);padding:4px 10px;border-radius:20px;font-size:12px;font-weight:600;margin-bottom:16px}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.section-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.clear-btn{font-size:13px;font-weight:600;color:var(--red);padding:4px 0}