:root{--bg-app:#f1f5f9;--bg-surface:#fffffff2;--bg-surface-hover:#f8fafc;--border-color:#cbd5e1;--border-color-light:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--text-sub:#475569;--primary:#0284c7;--primary-hover:#0369a1;--primary-light:#e0f2fe;--accent-orange:#f97316;--accent-red:#ef4444;--accent-green:#10b981;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--shadow-xl:0 20px 25px -5px #00000026;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-full:9999px}*{box-sizing:border-box;margin:0;padding:0}html,body{width:100%;height:100%;color:var(--text-main);background:var(--bg-app);-webkit-user-select:none;user-select:none;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:13.5px;overflow:hidden}#app{flex-direction:column;width:100vw;height:100vh;display:flex;position:relative}.app-header{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);z-index:30;flex-shrink:0;justify-content:space-between;align-items:center;gap:12px;height:52px;padding:0 14px;display:flex}.header-left{align-items:center;gap:10px;display:flex}.header-project-info{flex-direction:column;display:flex}.project-name{color:var(--text-main);white-space:nowrap;text-overflow:ellipsis;max-width:220px;font-size:13.5px;font-weight:700;overflow:hidden}.project-badge{color:var(--text-muted);font-size:11px}.header-center{scrollbar-width:none;align-items:center;gap:8px;display:flex;overflow-x:auto}.header-center::-webkit-scrollbar{display:none}.header-right{flex-shrink:0;align-items:center;gap:6px;display:flex}.btn-group{border-radius:var(--radius-md);border:1px solid var(--border-color-light);background:#f1f5f9;padding:2px;display:inline-flex}.tool-btn{border-radius:var(--radius-sm);color:var(--text-sub);cursor:pointer;white-space:nowrap;background:0 0;border:none;align-items:center;gap:4px;padding:5px 9px;font-size:12px;font-weight:500;transition:all .15s;display:inline-flex}.tool-btn:hover{color:var(--text-main);background:#fffc}.tool-btn.active{color:var(--primary);background:#fff;font-weight:600;box-shadow:0 1px 3px #0000001a}.tool-btn.highlight{border:1px solid var(--border-color);background:#fff}.tool-btn.highlight.active{color:#fff;background:#ea580c;border-color:#ea580c}.tool-btn.accent{color:#fff;background:#0284c7}.tool-btn.accent:hover{background:#0369a1}.tool-btn.primary{color:#fff;background:#0f172a}.tool-btn.primary:hover{background:#1e293b}.app-body{flex:1;display:flex;position:relative;overflow:hidden}.viewport-container{background:#dfe6ec;flex:1;width:100%;height:100%;position:relative}#threeCanvas{touch-action:none;width:100%;height:100%;display:block}.app-sidebar{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-right:1px solid var(--border-color);z-index:20;width:290px;box-shadow:var(--shadow-md);flex-direction:column;transition:transform .25s cubic-bezier(.4,0,.2,1);display:flex}.app-sidebar.collapsed{height:100%;position:absolute;transform:translate(-100%)}.sidebar-header{border-bottom:1px solid var(--border-color-light);padding:12px 14px 6px}.sidebar-title{text-transform:uppercase;color:var(--text-muted);letter-spacing:.5px;margin-bottom:8px;font-size:13px;font-weight:700}.sidebar-tabs{border-radius:var(--radius-sm);background:#f1f5f9;padding:2px;display:flex}.tab-btn{text-align:center;color:var(--text-muted);border-radius:var(--radius-sm);cursor:pointer;background:0 0;border:none;flex:1;padding:5px 0;font-size:11.5px;font-weight:500}.tab-btn.active{color:var(--primary);background:#fff;font-weight:700;box-shadow:0 1px 2px #0000000f}.sidebar-search{border-bottom:1px solid var(--border-color-light);padding:8px 12px}.sidebar-search input{border:1px solid var(--border-color);border-radius:var(--radius-sm);outline:none;width:100%;padding:6px 10px;font-size:12px}.sidebar-search input:focus{border-color:var(--primary)}.sidebar-actions{color:var(--text-muted);border-bottom:1px solid var(--border-color-light);align-items:center;gap:8px;padding:6px 14px;font-size:11px;display:flex}.link-btn{color:var(--primary);cursor:pointer;background:0 0;border:none;font-size:11px;font-weight:600}.link-btn:hover{text-decoration:underline}.sidebar-content{flex:1;padding:8px;overflow-y:auto}.category-item{border-radius:var(--radius-sm);margin-bottom:3px;padding:6px 8px;transition:background .15s}.category-item:hover{background:#f1f5f9}.category-main{cursor:pointer;align-items:center;gap:8px;width:100%;display:flex}.category-name{color:var(--text-main);word-break:break-word;flex:1;font-size:12.5px}.category-count{color:var(--text-muted);font-variant-numeric:tabular-nums;background:#e2e8f0;border-radius:10px;padding:1px 6px;font-size:11px}.color-picker-input{cursor:pointer;background:0 0;border:1px solid #00000026;border-radius:4px;width:18px;height:18px;padding:0}.color-picker-input::-webkit-color-swatch-wrapper{padding:0}.color-picker-input::-webkit-color-swatch{border:none;border-radius:3px}.color-dot{border:1px solid #00000026;border-radius:3px;flex-shrink:0;width:13px;height:13px;display:inline-block}.grp-expand-btn{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:3px;flex-shrink:0;justify-content:center;align-items:center;width:16px;height:16px;padding:0;font-size:9px;transition:all .15s;display:inline-flex}.grp-expand-btn:hover{color:var(--primary);background:#e2e8f0}.board-sublist{border-left:2px solid #e2e8f0;flex-direction:column;gap:2px;margin-top:4px;margin-left:20px;padding-left:6px;display:flex}.board-subitem{cursor:pointer;-webkit-user-select:none;user-select:none;background:#f8fafc;border-radius:4px;align-items:center;gap:6px;padding:3px 6px;font-size:11px;transition:all .15s;display:flex}.board-subitem:hover{color:var(--primary);background:#e0f2fe}.board-sub-ma{color:var(--primary);background:#dbeafe;border-radius:3px;flex-shrink:0;padding:0 4px;font-size:10px;font-weight:700}.board-sub-name{text-overflow:ellipsis;white-space:nowrap;color:var(--text-main);flex:1;overflow:hidden}.board-sub-dims{color:var(--text-muted);flex-shrink:0;font-size:9.5px}.floating-hud{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);z-index:25;padding:12px 14px;position:absolute}.measure-hud{min-width:250px;bottom:20px;right:20px}.assembly-hud{min-width:280px;bottom:20px;right:20px}.hud-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.hud-title{text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);font-size:12px;font-weight:700}.close-hud-btn,.close-assembly-btn{color:var(--text-muted);cursor:pointer;background:0 0;border:none;font-size:13px}.close-hud-btn:hover,.close-assembly-btn:hover{color:var(--text-main)}.measure-result{margin-bottom:10px}.result-number{color:#ea580c;font-variant-numeric:tabular-nums;font-size:24px;font-weight:800;line-height:1.1}.result-sub{color:var(--text-muted);margin-top:3px;font-size:11px}.hud-actions,.assembly-buttons{gap:6px;display:flex}.hud-btn{border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;background:#fff;flex:1;padding:6px 10px;font-size:11.5px;font-weight:600;transition:all .15s}.hud-btn:hover{background:#f8fafc}.hud-btn.active{color:#fff;background:#ea580c;border-color:#ea580c}.hud-btn.primary{color:#fff;background:#0284c7;border-color:#0284c7}.assembly-controls .form-row{align-items:center;gap:8px;margin-bottom:8px;display:flex}.form-label{color:var(--text-muted);width:70px;font-size:11.5px}.select-input{border:1px solid var(--border-color);border-radius:var(--radius-sm);background:#fff;outline:none;padding:5px 8px;font-size:12px}.assembly-progress-info{margin:10px 0 12px}.step-label{color:var(--text-muted);margin-bottom:4px;font-size:11.5px;display:block}.progress-bar-bg{background:#e2e8f0;border-radius:4px;width:100%;height:6px;overflow:hidden}.progress-bar-fill{background:#ea580c;height:100%;transition:width .3s}.id-banner{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);text-align:center;z-index:28;pointer-events:none;border:2px solid #ea580c;padding:10px 24px;position:absolute;top:18px;left:50%;transform:translate(-50%)}.banner-sub{text-transform:uppercase;color:#ea580c;letter-spacing:1px;font-size:10.5px;font-weight:700;display:block}.banner-ids{color:#0f172a;letter-spacing:1px;font-size:26px;font-weight:900;line-height:1.2}.banner-details{color:var(--text-muted);margin-top:2px;font-size:12px}.inspector-panel{background:var(--bg-surface);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-lg);width:290px;box-shadow:var(--shadow-lg);z-index:25;padding:12px 14px;position:absolute;bottom:20px;left:20px}.inspector-header{border-bottom:1px solid var(--border-color-light);justify-content:space-between;align-items:flex-start;margin-bottom:8px;padding-bottom:8px;display:flex}.inspector-badge{color:#fff;border-radius:var(--radius-sm);background:#0284c7;margin-bottom:3px;padding:1px 7px;font-size:11px;font-weight:700;display:inline-block}.inspector-title{color:var(--text-main);word-break:break-word;font-size:13.5px;font-weight:700}.inspector-grid{flex-direction:column;gap:5px;margin-bottom:10px;display:flex}.info-row{border-bottom:1px dashed #f1f5f9;justify-content:space-between;padding-bottom:3px;font-size:12px;display:flex}.info-label{color:var(--text-muted)}.info-value{color:var(--text-main);font-weight:500}.inspector-actions{gap:6px;display:flex}.btn-action{border:1px solid var(--border-color);border-radius:var(--radius-sm);cursor:pointer;background:#fff;flex:1;padding:6px 0;font-size:11.5px;font-weight:600}.btn-action:hover{background:#f8fafc}.modal-backdrop{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;background:#0f172a73;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-card{border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);border:1px solid var(--border-color);background:#fff;flex-direction:column;width:100%;max-width:960px;max-height:88vh;display:flex;overflow:hidden}.modal-header{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.modal-title{color:var(--text-main);font-size:16px;font-weight:700}.modal-subtitle{color:var(--text-muted);margin-top:2px;font-size:12px}.modal-toolbar{border-bottom:1px solid var(--border-color-light);background:#f8fafc;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:10px 20px;display:flex}.search-box{border:1px solid var(--border-color);border-radius:var(--radius-sm);background:#fff;flex:1;align-items:center;min-width:240px;padding:5px 10px;display:flex}.search-box input{border:none;outline:none;width:100%;margin-left:6px;font-size:12.5px}.table-container{flex:1;overflow:auto}.bom-table{border-collapse:collapse;width:100%;font-size:12px}.bom-table th{color:var(--text-sub);text-align:left;border-bottom:1px solid var(--border-color);z-index:10;background:#f1f5f9;padding:8px 10px;font-weight:700;position:sticky;top:0}.bom-table td{border-bottom:1px solid #f1f5f9;padding:7px 10px}.bom-table tr:hover{background:#f8fafc}.table-badge{color:#0369a1;background:#e0f2fe;border-radius:4px;padding:2px 6px;font-weight:700}.table-view-btn{border:1px solid var(--border-color);cursor:pointer;background:#fff;border-radius:4px;padding:3px 7px;font-size:11px}.table-view-btn:hover{color:#fff;background:#0284c7;border-color:#0284c7}.modal-footer{border-top:1px solid var(--border-color);background:#f8fafc;justify-content:space-between;align-items:center;padding:12px 20px;display:flex}.bom-summary{color:var(--text-muted);gap:8px;font-size:12px;display:flex}.bom-summary b{color:var(--text-main)}.code-input{letter-spacing:4px;text-align:center;text-transform:uppercase;border:2px solid var(--border-color);border-radius:var(--radius-md);outline:none;width:160px;padding:10px 14px;font-family:monospace;font-size:20px;font-weight:700}.code-input:focus{border-color:var(--primary)}.btn-primary{color:#fff;border-radius:var(--radius-md);cursor:pointer;background:#0284c7;border:none;padding:10px 16px;font-size:13.5px;font-weight:700}.btn-primary:hover{background:#0369a1}.btn-secondary{color:var(--text-sub);border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background:#fff;padding:8px 16px;font-size:13px;font-weight:600}.sample-tag{border:1px solid var(--border-color);border-radius:var(--radius-full);color:var(--primary);cursor:pointer;background:#f1f5f9;margin-left:6px;padding:4px 10px;font-size:11.5px;font-weight:600}.sample-tag:hover{background:var(--primary-light)}.divider{text-align:center;color:var(--text-muted);align-items:center;margin:12px 0;font-size:11px;display:flex}.divider:before,.divider:after{content:"";border-bottom:1px solid var(--border-color-light);flex:1}.divider span{padding:0 10px}.drop-zone{border:2px dashed var(--border-color);border-radius:var(--radius-lg);text-align:center;cursor:pointer;padding:24px;transition:all .2s}.drop-zone:hover,.drop-zone.drag-active{border-color:var(--primary);background:var(--primary-light)}.drop-zone-icon{margin-bottom:6px;font-size:32px}.drop-zone-text{color:var(--text-main);font-size:13.5px}.drop-zone-sub{color:var(--text-muted);font-size:11.5px}.btn-icon{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:4px;padding:4px 6px;font-size:16px}.btn-icon:hover{color:var(--text-main);background:#0000000f}.hidden{display:none!important}.text-right{text-align:right}.text-center{text-align:center}.font-mono{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace}.font-bold{font-weight:700}.font-medium{font-weight:500}.dim-floating-badge{color:#fff;letter-spacing:.5px;border-radius:var(--radius-full);pointer-events:none;z-index:26;white-space:nowrap;background:#ea580c;border:1.5px solid #fff;margin-top:-12px;padding:4px 10px;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:13px;font-weight:800;position:fixed;transform:translate(-50%,-100%);box-shadow:0 4px 12px #ea580c66,0 2px 4px #00000026}.dim-floating-badge:after{content:"";border:6px solid #0000;border-top-color:#ea580c;border-bottom-width:0;position:absolute;bottom:-6px;left:50%;transform:translate(-50%)}.history-modal-card{flex-direction:column;width:680px;max-width:95vw;max-height:85vh;display:flex}.history-body{flex-direction:column;gap:12px;max-height:calc(85vh - 120px);padding:16px;display:flex;overflow:hidden}.history-search-bar{gap:8px;display:flex}.history-search-bar input{border:1px solid var(--border-color);border-radius:var(--radius-md);outline:none;flex:1;padding:8px 12px;font-size:13px}.history-search-bar input:focus{border-color:var(--primary)}.history-list{flex-direction:column;flex:1;gap:8px;padding-right:4px;display:flex;overflow-y:auto}.history-card{border:1px solid var(--border-color);border-radius:var(--radius-md);cursor:pointer;background:#f8fafc;align-items:center;gap:12px;padding:10px 14px;transition:all .15s;display:flex}.history-card:hover{background:#f0f9ff;border-color:#bae6fd;transform:translateY(-1px);box-shadow:0 2px 6px 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.empty-sub{margin-top:4px;font-size:12px}.history-count-text{color:var(--text-muted);font-size:12px}.mobile-bottom-bar{display:none}@media (width<=768px){.header-center{display:none!important}.app-header{height:50px;padding:0 10px}.header-project-info .project-name{white-space:nowrap;text-overflow:ellipsis;max-width:140px;font-size:12.5px;overflow:hidden}.header-right .tool-btn:not(#btnOpenCode):not(#btnHistory):not(#btnInstallApp){display:none}.app-sidebar{z-index:50;background:#fff;width:280px;max-width:85vw;transition:transform .25s cubic-bezier(.16,1,.3,1);position:fixed;top:50px;bottom:58px;left:0;transform:translate(0);box-shadow:4px 0 20px #00000040}.app-sidebar.collapsed{width:280px;transform:translate(-100%)}.mobile-bottom-bar{height:calc(56px + env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);border-top:1px solid var(--border-color);z-index:40;background:#fffffff2;display:block;position:fixed;bottom:0;left:0;right:0;box-shadow:0 -2px 10px #0000000d}.m-bottom-nav{justify-content:space-around;align-items:center;height:56px;padding:0 4px;display:flex}.m-nav-item{color:var(--text-sub);cursor:pointer;border-radius:var(--radius-sm);-webkit-tap-highlight-color:transparent;background:0 0;border:none;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:3px;padding:6px 0;display:flex}.m-nav-item:active,.m-nav-item.active{color:var(--primary)}.m-nav-item.active .m-nav-icon{transform:scale(1.15)}.m-nav-icon{font-size:19px;line-height:1;transition:transform .15s}.m-nav-label{font-size:10px;font-weight:600}.m-quick-sheet{bottom:calc(56px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border-color);z-index:45;background:#fff;border-radius:16px 16px 0 0;max-height:70vh;padding:16px;transition:transform .28s cubic-bezier(.16,1,.3,1);position:fixed;left:0;right:0;overflow-y:auto;transform:translateY(110%);box-shadow:0 -8px 30px #0000002e}.m-quick-sheet.open{transform:translateY(0)}.m-sheet-header{border-bottom:1px solid var(--border-color-light);justify-content:space-between;align-items:center;margin-bottom:12px;padding-bottom:8px;display:flex}.m-sheet-title{color:var(--text-main);font-size:13.5px;font-weight:700}.m-sheet-grid{grid-template-columns:repeat(2,1fr);gap:8px;display:grid}.m-sheet-btn{border:1px solid var(--border-color);border-radius:var(--radius-md);color:var(--text-main);cursor:pointer;text-align:left;background:#f8fafc;align-items:center;gap:8px;padding:10px 12px;font-size:12.5px;font-weight:600;display:flex}.m-sheet-btn:active{background:#e0f2fe;border-color:#38bdf8}.m-sheet-btn.primary{color:var(--primary);background:#e0f2fe;border-color:#bae6fd}.m-sheet-btn.highlight{color:#ea580c;background:#fff7ed;border-color:#fed7aa}.floating-hud{max-width:94vw;bottom:68px!important}}