:root{--primary: #6366F1;--wireframe-color: #4A90E2;--primary-dark: #4F46E5;--primary-light: #818CF8;--accent: #06B6D4;--accent-2: #22C55E;--bg: #0F172A;--bg-panel: #111827;--surface: #111827;--surface-hover: #0b1220;--text: #000000;--text-secondary: #94A3B8;--text-muted: #94A3B8;--border: rgba(255,255,255,.05);--success: #22C55E;--danger: #EF4444;--warning: #F59E0B;--info: #06B6D4;--shadow-sm: 0 4px 10px rgba(0,0,0,.15);--shadow-md: 0 8px 18px rgba(0,0,0,.2);--shadow-lg: 0 10px 25px rgba(0,0,0,.3);--shadow-glow: 0 0 24px rgba(99, 102, 241, .16);--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--radius-xl: 16px;--transition: .2s ease}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,sans-serif;background:var(--bg);color:var(--text);font-size:15px;height:100vh;overflow:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.loading-spinner{display:inline-block;width:20px;height:20px;border:3px solid rgba(99,102,241,.2);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,var(--surface) 0%,var(--surface-hover) 50%,var(--surface) 100%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:var(--radius-md)}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.app{display:flex;height:100vh;width:100%}.sidebar{width:320px;background:linear-gradient(180deg,var(--surface) 0%,rgba(17,24,39,.9) 100%);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-lg)}.tabs{display:flex;background:var(--bg);padding:8px;gap:4px;border-bottom:2px solid var(--border)}.tabs button{flex:1;padding:12px 8px;background:transparent;border:2px solid transparent;color:var(--text-secondary);cursor:pointer;transition:all var(--transition);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;white-space:nowrap;min-width:0;border-radius:var(--radius-md);position:relative;overflow:hidden}.tabs button:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s;z-index:-1}.tabs button:hover:not(:disabled){color:var(--text);transform:translateY(-1px);border-color:var(--primary-light)}.tabs button.active{color:#fff;border-color:var(--primary);box-shadow:0 0 15px #6366f180,inset 0 0 10px #6366f133}.tabs button.active:before{opacity:1}.tabs button:disabled{opacity:.4;cursor:not-allowed;transform:none}.panel-content h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--text)}background: var(--bg-panel); border: 1px solid var(--border); box-shadow: var(--shadow-sm); } .panel-content h3{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--text)}.app-header h1{font-size:24px;font-weight:700;color:var(--text)}.logo svg{filter:drop-shadow(0 0 12px var(--wireframe-color))}.small,small,.text-small{font-size:12px;color:var(--text-secondary)}.dropzone{border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;margin-bottom:20px;cursor:pointer;transition:all var(--transition);background:linear-gradient(135deg,rgba(255,255,255,.02),rgba(255,255,255,.01));position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.dropzone:before{content:"📁";font-size:48px;display:block;margin-bottom:12px;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.dropzone:hover,.dropzone.active{border-color:var(--primary-light);background:linear-gradient(135deg,rgba(6,182,212,.06),rgba(34,197,94,.03));transform:translateY(-4px);box-shadow:var(--shadow-md)}.dropzone p{margin-bottom:8px;color:var(--text);font-weight:600;font-size:15px}.dropzone small{color:var(--text-secondary);font-size:12px;display:block;margin-top:8px}.scene-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}.scene-item{padding:14px 16px;background:linear-gradient(135deg,rgba(255,255,255,.01),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition);color:var(--text);font-size:14px;font-weight:500;display:flex;align-items:center;gap:12px;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.scene-item:before{content:"🎨";font-size:20px}.scene-item:after{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--primary),var(--accent));opacity:0;transition:opacity .3s}.scene-item:hover{background:linear-gradient(135deg,rgba(6,182,212,.03),rgba(34,197,94,.02));transform:translate(6px);border-color:var(--primary-light);box-shadow:var(--shadow-md)}.scene-item.active{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border-color:var(--primary);box-shadow:var(--shadow-glow);font-weight:600}.scene-item.active:after{opacity:1}.scene-item button{opacity:0!important;transition:all .3s!important;flex-shrink:0;z-index:10;position:relative}.scene-item:hover button,.scene-item.active button{opacity:1!important}.delete-btn{background:rgba(239,68,68,.2)!important;border:2px solid rgba(239,68,68,.4)!important;color:#ef4444!important;padding:6px 12px!important;border-radius:var(--radius-md)!important;cursor:pointer!important;font-size:12px!important;font-weight:600!important;display:flex!important;align-items:center!important;gap:4px!important;transition:all .3s!important}.delete-btn:hover{background:rgba(239,68,68,.4)!important;border-color:#ef4444!important;transform:scale(1.05)!important;box-shadow:0 4px 12px #ef444466!important}.material-panel{padding:12px 0}.material-group{background:linear-gradient(135deg,rgba(255,255,255,.01),rgba(255,255,255,.01));border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;margin-bottom:18px;transition:all var(--transition)}.material-group:hover{border-color:var(--primary-light);box-shadow:var(--shadow-lg);transform:translateY(-4px)}.material-group h4{margin-bottom:16px;color:#000;font-size:16px;font-weight:700;text-transform:capitalize;display:flex;align-items:center;gap:8px}.material-group h4:before{content:"🎨";font-size:18px}.form-group{margin-bottom:18px}.form-group:last-child{margin-bottom:0}.form-group label{display:block;margin-bottom:8px;font-size:13px;font-weight:600;color:#000;text-transform:uppercase;letter-spacing:.5px}.form-group input[type=range]{width:100%;height:6px;border-radius:8px;background:linear-gradient(90deg,var(--bg-light),var(--border));outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;position:relative;transition:all .3s}.form-group input[type=range]:hover{background:linear-gradient(90deg,var(--primary),var(--accent))}.form-group input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));cursor:pointer;box-shadow:0 0 10px #6366f180,0 4px 8px #0000004d;border:3px solid white;transition:all .3s}.form-group input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2);box-shadow:0 0 15px #6366f1cc,0 4px 12px #0006}.form-group input[type=color]{width:100%;height:48px;border:3px solid var(--border);border-radius:var(--radius-md);background:var(--bg);cursor:pointer;padding:4px;transition:all .3s}.form-group input[type=color]:hover{border-color:var(--primary);box-shadow:0 0 15px #6366f166;transform:scale(1.02)}.viewer-container{flex:1;position:relative;background:radial-gradient(circle at 50% 50%,#0f172a 0%,#020617 100%);overflow:hidden}.viewer-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 30%,rgba(99,102,241,.1) 0%,transparent 50%),radial-gradient(circle at 80% 70%,rgba(236,72,153,.08) 0%,transparent 50%);pointer-events:none;z-index:0}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;color:var(--text-secondary);font-size:18px;text-align:center;padding:40px;position:relative;z-index:1}.empty-state-logo{margin-bottom:30px;display:flex;align-items:center;justify-content:center;animation:float 3s ease-in-out infinite}.empty-state p{font-size:20px;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}button,.btn{font-family:inherit;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1)}button:active,.btn:active{transform:scale(.95)}.badge{display:inline-block;padding:4px 10px;border-radius:12px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}.badge-primary{background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff}.badge-success{background:var(--success);color:#fff}.badge-new{background:linear-gradient(135deg,#f59e0b,#ef4444);color:#fff;animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(.95)}}.section-divider{height:2px;background:linear-gradient(90deg,transparent,var(--primary),var(--accent),transparent);margin:24px 0;border-radius:2px}.glow{box-shadow:0 0 20px #6366f180}@media (max-width: 768px){.app{flex-direction:column}.sidebar{width:100%;height:50vh;border-right:none;border-bottom:3px solid var(--border)}.app-header h1{font-size:20px}.viewer-container{height:50vh}.tabs{padding:6px}.tabs button{padding:10px 6px;font-size:10px}.shape-info-card{padding:12px 14px}.scene-item button{opacity:1!important}}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--bg);border-radius:8px}::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--primary),var(--accent));border-radius:8px;border:2px solid var(--bg)}::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--primary-light),var(--accent-light));box-shadow:0 0 10px #6366f180}.app-header{background:linear-gradient(135deg,var(--primary),var(--accent));padding:20px 24px;border-bottom:3px solid rgba(255,255,255,.1);box-shadow:0 4px 20px #0000004d}.app-header h1{font-size:24px;font-weight:800;color:#fff;margin:0;text-shadow:0 2px 10px rgba(0,0,0,.3);letter-spacing:.5px;display:flex;align-items:center;gap:12px}.app-header p{margin:6px 0 0;font-size:12px;color:#fffc;font-weight:500;letter-spacing:1px;text-transform:uppercase}.shapes-info{padding:12px 0}.shapes-info h3{color:var(--text);font-size:22px;font-weight:700;margin-bottom:12px;display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.shapes-info>p{color:var(--text-muted);font-size:14px;margin-bottom:20px;font-style:italic}.shape-info-card{background:linear-gradient(135deg,rgba(99,102,241,.1),rgba(236,72,153,.05));border:2px solid var(--border);border-radius:var(--radius-lg);padding:16px 18px;transition:all .4s cubic-bezier(.4,0,.2,1);cursor:default;position:relative;overflow:hidden}.shape-info-card:before{content:"";position:absolute;top:0;left:0;width:4px;height:100%;background:linear-gradient(180deg,var(--primary),var(--accent));transition:width .3s}.shape-info-card:hover{background:linear-gradient(135deg,rgba(99,102,241,.18),rgba(236,72,153,.12));border-color:var(--primary-light);transform:translate(4px);box-shadow:0 8px 20px #6366f14d}.shape-info-card:hover:before{width:8px}.shape-info-card strong{display:block;color:var(--text);font-size:15px;margin-bottom:6px;font-weight:700;letter-spacing:.3px}.shape-info-card p{color:var(--text-secondary);font-size:13px;line-height:1.5;margin:0}:root{font-family:Inter,system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;min-width:320px;min-height:100vh}#root{width:100%;height:100vh}@media (max-width: 768px){.app{flex-direction:column}.sidebar{width:100%;height:200px}.viewer{height:calc(100vh - 200px)}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.scene-item{animation:fadeIn .3s ease-out forwards}