:root{--bg-primary: #000000;--bg-secondary: #1c1c1e;--bg-card: #1c1c1e;--bg-elevated: #2c2c2e;--bg-input: #2c2c2e;--text-primary: #ffffff;--text-secondary: rgba(235, 235, 245, .6);--text-muted: rgba(235, 235, 245, .3);--accent: #0a84ff;--accent-light: #5ac8fa;--accent-glow: rgba(10, 132, 255, .3);--success: #30d158;--success-glow: rgba(48, 209, 88, .25);--danger: #ff453a;--danger-glow: rgba(255, 69, 58, .25);--warning: #ff9f0a;--warning-glow: rgba(255, 159, 10, .25);--border: rgba(84, 84, 88, .5);--border-focus: #0a84ff;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 2px 8px rgba(0,0,0,.12);--shadow-md: 0 8px 24px rgba(0,0,0,.2);--shadow-lg: 0 16px 48px rgba(0,0,0,.3);--nav-height: 84px;--header-height: 56px;--font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif;--max-width: 640px}@media(prefers-color-scheme:light){:root{--bg-primary: #f2f2f7;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-elevated: #ffffff;--bg-input: rgba(118, 118, 128, .12);--text-primary: #000000;--text-secondary: rgba(60, 60, 67, .6);--text-muted: rgba(60, 60, 67, .3);--accent: #007aff;--accent-light: #5ac8fa;--accent-glow: rgba(0, 122, 255, .15);--success: #34c759;--success-glow: rgba(52, 199, 89, .15);--danger: #ff3b30;--danger-glow: rgba(255, 59, 48, .15);--warning: #ff9500;--warning-glow: rgba(255, 149, 0, .15);--border: rgba(60, 60, 67, .1);--border-focus: #007aff;--shadow-sm: 0 2px 8px rgba(0,0,0,.04);--shadow-md: 0 8px 16px rgba(0,0,0,.06);--shadow-lg: 0 16px 32px rgba(0,0,0,.1)}}.light-theme{--bg-primary: #f2f2f7;--bg-secondary: #ffffff;--bg-card: #ffffff;--bg-elevated: #ffffff;--bg-input: rgba(118, 118, 128, .12);--text-primary: #000000;--text-secondary: rgba(60, 60, 67, .6);--text-muted: rgba(60, 60, 67, .3);--accent: #007aff;--accent-light: #5ac8fa;--accent-glow: rgba(0, 122, 255, .15);--success: #34c759;--success-glow: rgba(52, 199, 89, .15);--danger: #ff3b30;--danger-glow: rgba(255, 59, 48, .15);--warning: #ff9500;--warning-glow: rgba(255, 149, 0, .15);--border: rgba(60, 60, 67, .1);--border-focus: #007aff;--shadow-sm: 0 2px 8px rgba(0,0,0,.04);--shadow-md: 0 8px 16px rgba(0,0,0,.06);--shadow-lg: 0 16px 32px rgba(0,0,0,.1)}.dark-theme{--bg-primary: #000000;--bg-secondary: #1c1c1e;--bg-card: #1c1c1e;--bg-elevated: #2c2c2e;--bg-input: #2c2c2e;--text-primary: #ffffff;--text-secondary: rgba(235, 235, 245, .6);--text-muted: rgba(235, 235, 245, .3);--accent: #0a84ff;--accent-light: #5ac8fa;--accent-glow: rgba(10, 132, 255, .3);--success: #30d158;--success-glow: rgba(48, 209, 88, .25);--danger: #ff453a;--danger-glow: rgba(255, 69, 58, .25);--warning: #ff9f0a;--warning-glow: rgba(255, 159, 10, .25);--border: rgba(84, 84, 88, .5);--border-focus: #0a84ff;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--shadow-sm: 0 2px 8px rgba(0,0,0,.12);--shadow-md: 0 8px 24px rgba(0,0,0,.2);--shadow-lg: 0 16px 48px rgba(0,0,0,.3)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}body{font-family:var(--font);background:var(--bg-primary);color:var(--text-primary);line-height:1.5;min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased;transition:background-color .3s ease,color .3s ease}#app{min-height:100dvh;display:flex;flex-direction:column}#page-container{flex:1;padding:24px 20px calc(var(--nav-height) + 32px);width:100%;max-width:var(--max-width);margin:0 auto;overflow-y:auto;-webkit-overflow-scrolling:touch}#bottom-nav{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:var(--max-width);height:var(--nav-height);background:#1c1c1ed9;backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-top:.5px solid var(--border);display:flex;align-items:flex-start;justify-content:space-around;padding-top:10px;padding-bottom:env(safe-area-inset-bottom,20px);z-index:100;transition:background-color .3s ease,border-color .3s ease}@media(prefers-color-scheme:light){#bottom-nav{background:#ffffffd9}}.light-theme #bottom-nav{background:#ffffffd9}.dark-theme #bottom-nav{background:#1c1c1ed9}.nav-btn{display:flex;flex-direction:column;align-items:center;gap:4px;background:none;border:none;color:var(--text-secondary);font-size:10px;font-weight:500;font-family:var(--font);cursor:pointer;padding:8px 16px;border-radius:var(--radius-md);transition:all .2s ease;-webkit-tap-highlight-color:transparent}.nav-btn svg{width:24px;height:24px;stroke-width:2px;transition:all .3s ease}.nav-btn.active{color:var(--accent)}.nav-btn:active{opacity:.7;transform:scale(.96)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;padding:0 4px}.page-title{font-size:34px;font-weight:700;letter-spacing:-.5px;color:var(--text-primary);margin-bottom:4px}.page-subtitle{font-size:15px;color:var(--text-secondary);font-weight:400}.search-bar{position:relative;margin-bottom:20px}.search-bar input{width:100%;height:48px;padding:0 16px 0 44px;background:var(--bg-input);border:none;border-radius:10px;color:var(--text-primary);font-size:17px;font-family:var(--font);outline:none;transition:all .2s ease}.search-bar input::placeholder{color:var(--text-muted)}.search-bar input:focus{background:var(--bg-input);box-shadow:0 0 0 2px var(--accent-glow)}.search-bar svg{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:20px;height:20px;color:var(--text-secondary);pointer-events:none}.group-tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;padding:0 4px 8px;margin-bottom:20px}.group-tabs::-webkit-scrollbar{display:none}.group-tab{flex-shrink:0;padding:8px 16px;background:var(--bg-card);border:none;border-radius:20px;color:var(--text-primary);font-size:15px;font-weight:500;font-family:var(--font);cursor:pointer;transition:all .2s ease;box-shadow:0 2px 6px #0000000a;-webkit-tap-highlight-color:transparent}.group-tab.active{background:var(--accent);color:#fff;box-shadow:0 4px 12px var(--accent-glow)}.group-tab .badge{display:inline-block;margin-left:6px;padding:0 6px;background:#fff3;border-radius:8px;font-size:12px;font-weight:600;line-height:16px}.inventory-grid{display:grid;grid-template-columns:1fr;gap:16px}@media(min-width:600px){.inventory-grid{grid-template-columns:repeat(2,1fr)}}.inv-card{display:flex;align-items:center;gap:16px;padding:16px;background:var(--bg-card);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);border:none;transition:transform .2s ease,box-shadow .2s ease;cursor:pointer;position:relative;overflow:hidden}.inv-card:active{transform:scale(.98)}.inv-card.low-stock{box-shadow:inset 0 0 0 2px var(--danger)}.inv-card .color-swatch{width:48px;height:48px;border-radius:12px;flex-shrink:0;border:1px solid rgba(0,0,0,.1);box-shadow:0 2px 4px #0000001a}.inv-card .item-info{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:center;gap:2px}.inv-card .item-code{font-size:17px;font-weight:600;color:var(--text-primary);display:flex;align-items:center;gap:6px}.inv-card .item-code .alert-icon{color:var(--danger);font-size:16px}.inv-card .item-group{font-size:13px;color:var(--text-secondary)}.inv-card .item-qty{text-align:right;flex-shrink:0;display:flex;flex-direction:column;align-items:flex-end}.inv-card .qty-number{font-size:20px;font-weight:600;color:var(--text-primary);font-variant-numeric:tabular-nums;line-height:1.2}.inv-card .qty-unit{font-size:12px;color:var(--text-muted)}.inv-card.low-stock .qty-number{color:var(--danger);font-weight:700}.color-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(60px,1fr));gap:12px;margin-bottom:24px}.color-cell{aspect-ratio:1;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;cursor:pointer;border:none;transition:transform .2s cubic-bezier(.34,1.56,.64,1);position:relative;-webkit-tap-highlight-color:transparent;box-shadow:0 2px 4px #00000026;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.3)}.color-cell.dark-text{color:#000c;text-shadow:none}.color-cell:active{transform:scale(.92)}.color-cell.selected{transform:scale(.95);box-shadow:0 0 0 3px var(--bg-primary),0 0 0 5px var(--accent);z-index:1}.color-cell .check-mark{position:absolute;top:-6px;right:-6px;width:22px;height:22px;background:var(--accent);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;color:#fff;box-shadow:0 2px 4px #0003;border:2px solid var(--bg-card)}.qty-control{display:flex;align-items:center;background:var(--bg-secondary);border-radius:12px;padding:4px;box-shadow:var(--shadow-sm)}.qty-control button{width:40px;height:40px;background:var(--bg-card);border:none;border-radius:8px;color:var(--text-primary);font-size:22px;font-weight:400;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px #0000000d;transition:all .2s}.qty-control button:active{transform:scale(.92);background:var(--bg-input)}.qty-control input{width:60px;text-align:center;background:none;border:none;color:var(--text-primary);font-size:18px;font-weight:600;font-family:var(--font);outline:none}.selected-list{display:flex;flex-direction:column;gap:0}.selected-item{display:flex;align-items:center;padding:16px 0;border-bottom:.5px solid var(--border);background:transparent}.selected-item:last-child{border-bottom:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;height:50px;border:none;border-radius:14px;font-size:17px;font-weight:600;font-family:var(--font);cursor:pointer;transition:all .2s ease;-webkit-tap-highlight-color:transparent}.btn:active{transform:scale(.96);opacity:.9}.btn-primary{background:var(--accent);color:#fff}.btn-primary:disabled{background:var(--bg-input);color:var(--text-muted);cursor:not-allowed;transform:none}.btn-danger{background:var(--danger);color:#fff}.btn-danger:active{opacity:.85}.btn-outline{background:transparent;color:var(--accent);border:none;padding:12px 16px}.btn-outline.bordered{border:1px solid var(--border);color:var(--text-primary)}.btn-block{width:100%}.mode-toggle{display:flex;background:var(--bg-input);border-radius:9px;padding:2px;margin-bottom:24px}.mode-toggle button{flex:1;padding:6px 12px;border:none;border-radius:7px;background:transparent;color:var(--text-primary);font-size:13px;font-weight:500;cursor:pointer;transition:all .2s ease}.mode-toggle button.active{background:var(--bg-card);color:var(--text-primary);box-shadow:0 2px 4px #0000001f}.upload-zone{border:1px dashed var(--border);border-radius:var(--radius-lg);padding:40px 20px;text-align:center;cursor:pointer;transition:all .3s ease;background:var(--bg-card)}.upload-zone:hover{border-color:var(--accent);background:var(--bg-input)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;display:flex;align-items:center;justify-content:center;z-index:2000;background:#0006;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);transition:opacity .3s ease;animation:fadeIn .2s ease-out}.modal-content{background:var(--bg-card);border-radius:20px;box-shadow:var(--shadow-lg);border:none;overflow:hidden}.modal-title{text-align:center;font-size:18px;font-weight:600;margin-bottom:8px}.toast-item{background:#1e1e1ed9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);color:#fff;border-radius:30px;padding:12px 24px;box-shadow:var(--shadow-md);font-weight:500;font-size:15px}.light-theme .toast-item{background:#ffffffd9;color:#000}@media(max-width:480px){.page-title{font-size:28px}}.token-input-group input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-glow)}#toast-container{position:fixed;top:20px;left:50%;transform:translate(-50%);z-index:1000;display:flex;flex-direction:column;gap:8px;pointer-events:none;width:calc(100% - 32px);max-width:400px}.toast{padding:14px 20px;border-radius:var(--radius-md);font-size:14px;font-weight:500;animation:toastIn .3s ease,toastOut .3s ease 2.7s forwards;pointer-events:auto;display:flex;align-items:center;gap:10px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.toast.success{background:#00c48ce6;color:#fff;box-shadow:0 4px 20px var(--success-glow)}.toast.error{background:#ff5c72e6;color:#fff;box-shadow:0 4px 20px var(--danger-glow)}.toast.info{background:#6c63ffe6;color:#fff;box-shadow:0 4px 20px var(--accent-glow)}@keyframes toastIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes toastOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(-20px)}}.login-page{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:80vh;text-align:center;padding:24px}.login-logo{font-size:64px;margin-bottom:16px}.login-title{font-size:28px;font-weight:700;margin-bottom:8px;background:linear-gradient(135deg,var(--text-primary),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.login-subtitle{font-size:15px;color:var(--text-secondary);margin-bottom:40px}.login-actions{display:flex;flex-direction:column;gap:12px;width:100%;max-width:320px}.divider{display:flex;align-items:center;gap:12px;margin:8px 0;color:var(--text-muted);font-size:13px}.divider:before,.divider:after{content:"";flex:1;height:1px;background:var(--border)}.summary-footer{position:fixed;bottom:var(--nav-height);left:0;right:0;background:#16213ef2;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border);padding:12px 16px;padding-bottom:calc(12px + env(safe-area-inset-bottom,0));z-index:50;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}.summary-footer .summary-text{font-size:13px;color:var(--text-secondary);margin-bottom:8px}.summary-footer .summary-highlight{color:var(--accent-light);font-weight:600}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;grid-column:1 / -1}.empty-state svg{width:64px;height:64px;color:var(--text-muted);margin-bottom:16px;opacity:.5}.empty-state .empty-title{font-size:18px;font-weight:600;margin-bottom:8px}.empty-state .empty-desc{font-size:14px;color:var(--text-secondary);margin-bottom:20px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:200;display:flex;align-items:flex-end;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-content{width:100%;max-height:80vh;background:var(--bg-secondary);border-radius:var(--radius-xl) var(--radius-xl) 0 0;padding:24px;overflow-y:auto;animation:modalSlide .3s ease}@keyframes modalSlide{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-handle{width:40px;height:4px;background:var(--text-muted);border-radius:2px;margin:0 auto 20px}.modal-title{font-size:20px;font-weight:700;margin-bottom:16px}.note-input{width:100%;padding:12px 16px;background:var(--bg-input);border:1px solid var(--border);border-radius:var(--radius-md);color:var(--text-primary);font-size:14px;font-family:var(--font);outline:none;resize:none;margin-bottom:12px}.note-input:focus{border-color:var(--border-focus);box-shadow:0 0 0 3px var(--accent-glow)}.stats-banner{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:20px}.stat-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-md);padding:14px;text-align:center}.stat-card .stat-value{font-size:24px;font-weight:700;font-variant-numeric:tabular-nums}.stat-card .stat-label{font-size:11px;color:var(--text-muted);margin-top:2px}.stat-card.alert .stat-value{color:var(--danger)}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--text-muted);border-radius:2px}.spinner{display:inline-block;width:20px;height:20px;border:2px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}@media(min-width:768px){#page-container{max-width:600px;margin:0 auto}#bottom-nav{max-width:600px;left:50%;transform:translate(-50%);border-radius:var(--radius-lg) var(--radius-lg) 0 0}.summary-footer{max-width:600px;left:50%;transform:translate(-50%)}.color-grid{grid-template-columns:repeat(auto-fill,minmax(64px,1fr))}}.settings-section{margin-bottom:32px}.section-title{font-size:13px;text-transform:uppercase;color:var(--text-secondary);margin-bottom:8px;margin-left:12px;font-weight:500}.settings-card{background:var(--bg-card);border-radius:var(--radius-md);padding:16px;box-shadow:var(--shadow-sm)}.token-display{display:flex;align-items:center;gap:12px}.token-value{flex:1;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:20px;letter-spacing:2px;color:var(--text-primary);background:var(--bg-input);padding:10px;border-radius:10px;text-align:center;user-select:all;-webkit-user-select:all;overflow:hidden;text-overflow:ellipsis}.copy-btn{flex-shrink:0;width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--bg-input);border:none;border-radius:10px;color:var(--accent);cursor:pointer;transition:all .2s}.copy-btn:active{background:var(--bg-elevated);transform:scale(.95)}.token-input-group{display:flex;gap:12px}.token-input-group input{flex:1;height:44px;padding:0 16px;background:var(--bg-input);border:none;border-radius:10px;color:var(--text-primary);font-size:16px;font-family:monospace;outline:none}