:root{--color-primary: #4facfe;--color-primary-hover: #5fb8ff;--color-primary-dark: #00f2fe;--color-secondary: #ffa726;--color-error: #ff6b6b;--color-error-light: rgba(255, 80, 80, .2);--color-success: #4facfe;--color-warning: #ffd700;--bg-primary: #1a1a1a;--bg-secondary: #2a2a2a;--bg-panel: rgba(20, 20, 20, .95);--bg-card: rgba(255, 255, 255, .05);--bg-card-hover: rgba(79, 172, 254, .08);--bg-overlay: rgba(0, 0, 0, .9);--bg-overlay-light: rgba(0, 0, 0, .8);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .9);--text-tertiary: rgba(255, 255, 255, .7);--text-muted: rgba(255, 255, 255, .5);--text-disabled: #999999;--text-label: #cccccc;--border-primary: rgba(255, 255, 255, .1);--border-secondary: rgba(255, 255, 255, .2);--border-accent: #4facfe;--border-accent-hover: rgba(79, 172, 254, .6);--border-dark: #444444;--spacing-xs: 4px;--spacing-sm: 8px;--spacing-md: 12px;--spacing-lg: 16px;--spacing-xl: 20px;--spacing-2xl: 24px;--spacing-3xl: 30px;--spacing-4xl: 40px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 20px;--radius-full: 50px;--radius-circle: 50%;--font-xs: 9px;--font-sm: 10px;--font-base: 11px;--font-md: 12px;--font-lg: 14px;--font-xl: 16px;--font-2xl: 20px;--font-3xl: 24px;--font-4xl: 28px;--font-5xl: 32px;--font-6xl: 48px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .2);--shadow-md: 0 4px 12px rgba(79, 172, 254, .3);--shadow-lg: 0 8px 25px rgba(79, 172, 254, .15);--shadow-xl: 0 8px 25px rgba(79, 172, 254, .25);--shadow-dark: 0 4px 20px rgba(0, 0, 0, .5);--transition-fast: .2s ease;--transition-base: .3s ease;--transition-slow: .4s ease;--transition-very-slow: .5s ease;--z-canvas: 1;--z-ui: 100;--z-loading: 1000;--z-notification: 1001;--z-modal: 10000;--z-modal-high: 10001;--z-modal-highest: 10002;--panel-width: 350px;--panel-width-tablet: 320px;--panel-width-mobile: calc(100vw - 20px) ;--toolbar-height: 60px;--corner-btn-spacing: 20px;--corner-btn-spacing-tablet: 15px;--corner-btn-spacing-mobile: 10px;--blur-sm: blur(8px);--blur-md: blur(10px);--gradient-primary: linear-gradient(90deg, #4facfe 0%, #00f2fe 100%);--gradient-card: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);--gradient-overlay: linear-gradient(135deg, rgba(79, 172, 254, .05) 0%, transparent 50%)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);overflow:hidden;-webkit-user-select:none;user-select:none}#app{position:relative;width:100vw;height:100vh}#canvas-container{position:absolute;top:0;left:0;width:100%;height:100%;z-index:var(--z-canvas);overflow:hidden}#canvas-container canvas{display:block;width:100%!important;height:100%!important;position:absolute;top:0;left:0}#loading-screen{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--bg-overlay);display:flex;align-items:center;justify-content:center;z-index:var(--z-loading);-webkit-backdrop-filter:var(--blur-md);backdrop-filter:var(--blur-md)}.loading-content{text-align:center;color:var(--text-primary)}.loading-content h2{margin-bottom:var(--spacing-xl);font-size:var(--font-3xl);font-weight:300}.loading-bar{width:300px;height:4px;background:var(--border-secondary);border-radius:2px;overflow:hidden}.loading-progress{height:100%;background:var(--gradient-primary);width:0%;transition:width var(--transition-base)}.transition-loader{position:fixed;top:0;left:0;width:100%;height:100%;background:var(--bg-overlay);display:none;align-items:center;justify-content:center;z-index:var(--z-modal-highest);-webkit-backdrop-filter:var(--blur-md);backdrop-filter:var(--blur-md);opacity:0;transition:opacity var(--transition-base)}.transition-loader.active{display:flex;opacity:1}.transition-loader-content{text-align:center;color:var(--text-primary)}.transition-loader-content h2{margin-bottom:var(--spacing-xl);font-size:var(--font-3xl);font-weight:300}.transition-loading-bar{width:300px;height:4px;background:var(--border-secondary);border-radius:2px;overflow:hidden;margin:0 auto}.transition-loading-progress{height:100%;background:var(--gradient-primary);width:100%;animation:loadingPulse 1.5s ease-in-out infinite}@keyframes loadingPulse{0%,to{opacity:.5}50%{opacity:1}}#ui-container{position:fixed;top:80px;right:var(--corner-btn-spacing);z-index:var(--z-ui);width:var(--panel-width);pointer-events:none}.ui-panel{position:absolute;top:0;right:0;width:100%;max-height:calc(100vh - 140px);background:var(--bg-panel);-webkit-backdrop-filter:var(--blur-md);backdrop-filter:var(--blur-md);border-radius:var(--radius-lg);border:1px solid var(--border-primary);transform:translate(100%);transition:transform var(--transition-base),opacity var(--transition-base),visibility var(--transition-base);overflow:hidden;opacity:0;visibility:hidden;pointer-events:auto}.ui-panel.active{transform:translate(0);opacity:1;visibility:visible}.panel-header{display:flex;justify-content:space-between;align-items:center;padding:var(--spacing-lg) var(--spacing-xl);border-bottom:1px solid var(--border-primary);background:var(--bg-card)}.panel-header h3{font-size:var(--font-xl);font-weight:600}.panel-toggle{background:none;border:none;color:var(--text-primary);font-size:18px;cursor:pointer;padding:5px;border-radius:var(--radius-sm)}.panel-toggle:hover{background:var(--border-primary)}.panel-content{padding:var(--spacing-xl);max-height:calc(60vh - 60px);overflow-y:auto}.collection-label{padding:8px 12px;background:#4facfe26;border-left:3px solid #4facfe;margin:0 0 10px;font-size:12px;color:#4facfe;font-weight:500;border-radius:4px}#furniture-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:15px;margin-top:15px;padding:5px}#material-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:10px;margin-top:15px}.furniture-item{background:#ffffff0d;border-radius:12px;border:2px solid transparent;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;overflow:hidden;position:relative;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);padding:12px;min-height:180px}.material-item{background:#ffffff1a;border-radius:8px;border:2px solid transparent;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;position:relative;padding:8px;gap:4px;min-height:120px}.furniture-item:hover,.material-item:hover{border-color:#4facfe99;background:#4facfe14;transform:translateY(-2px);box-shadow:0 8px 25px 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img{width:100%;flex:1;object-fit:cover;border-radius:6px}#material-groups{display:flex;flex-wrap:wrap;gap:8px}.group-btn{padding:8px 16px;background:#ffffff1a;border:none;border-radius:20px;color:#fff;font-size:12px;cursor:pointer;transition:all .2s ease}.group-btn:hover,.group-btn.active{background:#4facfe}.corner-btn{position:fixed;background:var(--bg-panel);-webkit-backdrop-filter:var(--blur-md);backdrop-filter:var(--blur-md);border:1px solid var(--border-primary);color:var(--text-primary);padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-md);font-size:var(--font-lg);font-weight:500;cursor:pointer;transition:all var(--transition-fast);z-index:var(--z-ui)}.corner-btn:hover{background:var(--bg-card-hover)}.corner-btn:active{background:#4facfe26}.corner-btn.top-left{top:var(--corner-btn-spacing);left:var(--corner-btn-spacing)}.corner-btn.top-right{top:var(--corner-btn-spacing);right:var(--corner-btn-spacing)}.corner-btn.bottom-left{bottom:var(--corner-btn-spacing);left:var(--corner-btn-spacing)}.corner-btn.bottom-right{bottom:var(--corner-btn-spacing);right:var(--corner-btn-spacing)}#toolbar{position:fixed;bottom:var(--corner-btn-spacing);left:50%;transform:translate(-50%);display:flex;gap:var(--spacing-sm);background:var(--bg-panel);-webkit-backdrop-filter:var(--blur-md);backdrop-filter:var(--blur-md);padding:var(--spacing-md) var(--spacing-xl);border-radius:var(--radius-full);border:1px solid var(--border-primary);z-index:var(--z-ui);transition:opacity var(--transition-slow),visibility var(--transition-slow)}.variations-selection-info{padding:16px;margin-bottom:16px;transition:opacity .3s ease,max-height .3s ease;overflow:hidden;max-height:500px}.variations-selection-info.hidden{opacity:0;max-height:0;margin-bottom:0;padding:0;border-width:0;pointer-events:none}.variations-selection-name{color:#fff;font-size:16px;font-weight:600;text-align:center;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.1)}.variations-selection-actions{display:flex;gap:8px}.variations-btn{flex:1;padding:10px 16px;background:#4facfe33;border:1px solid rgba(79,172,254,.4);color:#fff;font-size:14px;font-weight:500;cursor:pointer;border-radius:8px;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:6px}.variations-btn:hover{background:#4facfe4d;border-color:#4facfe99}.variations-btn:active{background:#4facfe66}.variations-btn:disabled{opacity:.4;cursor:not-allowed;background:#64646433;border-color:#64646466}.variations-btn.variations-delete-btn{background:#ff505033;border-color:#ff505066}.variations-btn.variations-delete-btn:hover{background:#ff50504d;border-color:#ff505099}.variations-btn.variations-delete-btn:active{background:#ff505066}.variations-btn-icon{display:none}.variations-btn-text{display:inline}.toolbar-btn{display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px 12px;background:none;border:none;color:#fff;font-size:11px;cursor:pointer;border-radius:12px;transition:all .2s ease;min-width:60px}.toolbar-btn:hover{background:#4facfe33}.toolbar-btn:active{background:#4facfe4d}.toolbar-btn.active{background:#4facfe}.toolbar-btn.active:hover{background:#5fb8ff}.toolbar-btn span:first-child{font-size:16px}.control-group{margin-bottom:12px}.control-group:last-child{margin-bottom:0}.control-group label{display:flex;align-items:center;gap:8px;font-size:12px}.control-label{display:block;font-size:11px;color:#ffffffb3;margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px;font-weight:500}.control-group input[type=checkbox]{width:16px;height:16px}.control-group select{background:#ffffff1a;border:1px solid rgba(255,255,255,.2);color:#fff;padding:8px 12px;border-radius:6px;font-size:12px;cursor:pointer;transition:all .2s ease;width:100%}.control-group select:hover{background:#ffffff26;border-color:#ffffff4d}.control-group select:focus{outline:none;border-color:#4facfe80;background:#ffffff26}.leg-texture-select{width:100%}.light-slider{width:100%;height:6px;border-radius:3px;background:#ffffff1a;outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none}.light-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:#4facfee6;cursor:pointer;transition:all .2s ease}.light-slider::-webkit-slider-thumb:hover{background:#4facfe;transform:scale(1.1)}.light-slider::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#4facfee6;cursor:pointer;border:none;transition:all .2s ease}.light-slider::-moz-range-thumb:hover{background:#4facfe;transform:scale(1.1)}.shortcuts-help-btn{position:fixed;top:68px;left:20px;width:36px;height:36px;background:#141414f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.1);border-radius:50%;color:#4facfe;font-size:20px;font-weight:700;cursor:pointer;transition:all .2s ease;z-index:100;display:flex;align-items:center;justify-content:center}.shortcuts-help-btn:hover{background:#4facfe33;border-color:#4facfe;transform:scale(1.05)}.shortcuts-help-btn:active{background:#4facfe4d;transform:scale(.95)}#info-panel{position:fixed;top:116px;left:20px;background:#141414f2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:15px;border-radius:12px;border:1px solid rgba(255,255,255,.1);z-index:100;font-size:12px;font-family:Monaco,Consolas,monospace}#info-panel div{margin-bottom:5px}#info-panel div:last-child{margin-bottom:0}.btn-primary{width:100%;background:linear-gradient(90deg,#4facfe,#00f2fe);border:none;color:#fff;padding:12px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:all .2s ease}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 25px #4facfe4d}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.panel-content::-webkit-scrollbar{width:6px}.panel-content::-webkit-scrollbar-track{background:#ffffff1a;border-radius:3px}.panel-content::-webkit-scrollbar-thumb{background:#ffffff4d;border-radius:3px}.panel-content::-webkit-scrollbar-thumb:hover{background:#ffffff80}@media (max-width: 1024px) and (min-width: 769px){#ui-container{top:75px;right:var(--corner-btn-spacing-tablet);width:var(--panel-width-tablet)}.ui-panel{max-height:70vh}.panel-header{padding:var(--spacing-md) var(--spacing-lg)}.panel-content{padding:var(--spacing-lg)}#toolbar{bottom:var(--corner-btn-spacing-tablet);padding:var(--spacing-sm) var(--spacing-lg);gap:var(--spacing-sm)}.toolbar-btn{padding:var(--spacing-sm) var(--spacing-sm);font-size:var(--font-sm);min-width:55px}.toolbar-btn span:first-child{font-size:15px}.variations-btn-icon{display:inline;font-size:18px}.variations-btn-text{display:none}.variations-btn{padding:var(--spacing-sm) var(--spacing-md)}.corner-btn{padding:var(--spacing-sm) var(--spacing-lg);font-size:var(--font-md)}.corner-btn.top-left,.corner-btn.top-right{top:var(--corner-btn-spacing-tablet)}.corner-btn.bottom-left,.corner-btn.bottom-right{bottom:75px}#furniture-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(130px,1fr))}.furniture-item{min-height:150px;padding:var(--spacing-sm)}#material-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(75px,1fr))}.material-item{min-height:110px;padding:var(--spacing-sm)}.material-item img{height:70px}.material-name{font-size:var(--font-base)}.material-price{font-size:var(--font-sm)}#info-panel{top:111px;left:var(--corner-btn-spacing-tablet)}.shortcuts-help-btn{top:63px;left:var(--corner-btn-spacing-tablet)}.shortcuts-modal-content .modal-title{font-size:var(--font-2xl)}.shortcuts-section-title{font-size:var(--font-md)}.shortcut-item kbd{font-size:var(--font-sm)}.shortcut-item span{font-size:var(--font-md)}.shortcuts-section.mobile-controls{display:none}}@media (max-width: 768px){#ui-container{top:max(70px,calc(70px + env(safe-area-inset-top)));right:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-right))}.ui-panel{width:var(--panel-width-mobile);max-width:var(--panel-width);max-height:60vh}.panel-header{padding:var(--spacing-md) var(--spacing-lg)}.panel-header h3{font-size:var(--font-xl)}.panel-content{padding:var(--spacing-md)}#toolbar{bottom:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-bottom));padding:var(--spacing-sm) max(var(--spacing-md),env(safe-area-inset-left)) var(--spacing-sm) max(var(--spacing-md),env(safe-area-inset-right));gap:var(--spacing-xs);border-radius:var(--radius-lg)}.toolbar-btn{min-width:auto;flex-shrink:0;padding:var(--spacing-xs) var(--spacing-sm);gap:2px;font-size:var(--font-sm)}.toolbar-btn span:first-child{font-size:var(--font-lg)}.variations-btn-icon{display:inline;font-size:var(--font-2xl)}.variations-btn-text{display:none}.variations-btn{padding:var(--spacing-sm) var(--spacing-md)}#info-panel{display:none}.corner-btn{padding:var(--spacing-sm) var(--spacing-md);font-size:var(--font-base)}.corner-btn.top-left{top:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-top));left:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-left))}.corner-btn.top-right{top:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-top));right:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-right))}.corner-btn.bottom-left{bottom:max(70px,calc(70px + env(safe-area-inset-bottom)));left:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-left))}.corner-btn.bottom-right{bottom:max(70px,calc(70px + env(safe-area-inset-bottom)));right:max(var(--corner-btn-spacing-mobile),env(safe-area-inset-right))}#furniture-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.furniture-item{min-height:120px;padding:var(--spacing-sm)}.furniture-label{font-size:var(--font-sm)}.furniture-price{font-size:var(--font-xs)}#material-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(70px,1fr));padding:var(--spacing-sm)}.material-item{min-height:100px;padding:var(--spacing-xs)}.material-item img{width:100%;height:60px;object-fit:cover}.material-name{font-size:var(--font-sm);margin-top:var(--spacing-xs)}.material-price,.material-code{font-size:var(--font-xs);margin-top:2px}.environment-grid{gap:var(--spacing-sm);grid-template-columns:repeat(auto-fill,minmax(70px,1fr))}.shortcuts-help-btn{top:max(56px,calc(56px + 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.ui-panel.ui-hidden{opacity:0;visibility:hidden;pointer-events:none;transform:translate(100%);transition:all .5s ease}body #toolbar.ui-hidden{opacity:0;visibility:hidden;pointer-events:none;transition:opacity .4s ease,visibility .4s ease}body .hidden{display:none}.furniture-thumbnail{width:100%;height:120px;background:linear-gradient(135deg,#2a2a2a,#1a1a1a);display:flex;flex-direction:column;align-items:center;justify-content:center;color:#fff;border-radius:8px;position:relative;overflow:hidden;box-shadow:inset 0 1px #ffffff1a}.furniture-thumbnail-icon{font-size:32px;margin-bottom:8px;opacity:.9;filter:drop-shadow(0 2px 4px rgba(0,0,0,.3))}.furniture-thumbnail-label{font-size:10px;font-weight:500;color:#fffc;text-align:center;line-height:1.2;padding:0 4px}.furniture-thumbnail-pattern{position:absolute;top:0;left:0;right:0;bottom:0;background-image:radial-gradient(circle at 25% 25%,rgba(255,255,255,.02) 0%,transparent 50%),radial-gradient(circle at 75% 75%,rgba(255,255,255,.02) 0%,transparent 50%);pointer-events:none}.material-thumbnail-image{width:100%;flex:1;object-fit:cover;border-radius:6px}.material-loading-placeholder{width:100%;flex:1;background:linear-gradient(45deg,#f0f0f0,#e0e0e0);border-radius:6px;display:flex;align-items:center;justify-content:center;color:#999;font-size:10px}.material-name{width:100%;text-align:center;font-size:11px;font-weight:600;color:#ffffffe6;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2}.material-code{width:100%;text-align:center;font-size:9px;font-weight:500;color:#4facfecc;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.2}.panel-content-enabled{opacity:1;pointer-events:auto;transition:all .3s ease}.panel-content-disabled{opacity:.5;pointer-events:none;transition:all .3s ease}.scene-mode-toggle-disabled{opacity:.6;transition:opacity .3s ease}.scene-mode-toggle-enabled{opacity:1;transition:opacity .3s ease}body.cursor-crosshair,body.cursor-crosshair 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