:root{--bg-dark: #0f172a;--bg-card: rgba(30, 41, 59, .7);--primary: #3b82f6;--primary-hover: #2563eb;--text-main: #f8fafc;--text-muted: #94a3b8;--border-color: rgba(255, 255, 255, .1);--accent-success: #10b981;--accent-warning: #f59e0b;--accent-danger: #ef4444}*{box-sizing:border-box;margin:0;padding:0}body,html{width:100%;height:100%;font-family:Inter,sans-serif;background-color:var(--bg-dark);color:var(--text-main);overflow:hidden;-webkit-font-smoothing:antialiased}#app-container{width:100%;height:100%;position:absolute;top:0;left:0;z-index:1}.btn-primary{background-color:var(--primary);color:#fff;border:none;padding:14px 24px;font-size:16px;font-weight:600;border-radius:12px;cursor:pointer;transition:all .2s ease;display:flex;justify-content:center;align-items:center;gap:10px;width:100%}.btn-primary:not(:disabled):hover{background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 4px 12px #3b82f666}.btn-primary:not(:disabled):active{transform:translateY(0)}.btn-primary:disabled{background-color:var(--bg-card);color:var(--text-muted);cursor:not-allowed;opacity:.7}.spinner{display:none;width:20px;height:20px;border:3px solid rgba(255,255,255,.3);border-radius:50%;border-top-color:#fff;animation:spin 1s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}.btn-primary.loading .spinner{display:block}.btn-primary.loading .btn-text{display:none}.screen{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;justify-content:center;align-items:center;z-index:10;background:linear-gradient(135deg,#0f172af2,#1e293bf2);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);opacity:0;pointer-events:none;transition:opacity .4s ease}.screen.active{opacity:1;pointer-events:auto}.welcome-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:24px;padding:32px 24px;width:90%;max-width:400px;box-shadow:0 20px 40px #0006;text-align:center;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.icon-container{width:64px;height:64px;margin:0 auto 20px;background:linear-gradient(135deg,var(--primary),#8b5cf6);border-radius:16px;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 16px #3b82f64d}.icon-container svg{width:32px;height:32px;color:#fff}.welcome-card h1{font-size:24px;font-weight:700;margin-bottom:12px;background:linear-gradient(to right,#60a5fa,#c084fc);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.description{color:var(--text-muted);font-size:15px;line-height:1.5;margin-bottom:24px}.requirements{background:#0003;border-radius:12px;padding:16px;margin-bottom:20px;text-align:left}.requirements h3{font-size:13px;text-transform:uppercase;color:var(--text-muted);margin-bottom:10px;letter-spacing:.5px}.requirements ul{list-style:none}.requirements li{font-size:14px;color:var(--text-main);margin-bottom:8px;display:flex;align-items:center}.requirements li:last-child{margin-bottom:0}.warning-box{background:#f59e0b1a;border:1px solid rgba(245,158,11,.3);color:var(--accent-warning);padding:12px;border-radius:8px;font-size:13px;margin-bottom:24px;line-height:1.4;text-align:left}.error-message{color:var(--accent-danger);font-size:14px;margin-top:16px;min-height:20px}#xr-overlay{position:fixed;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none;background:transparent;z-index:100;display:flex;flex-direction:column;justify-content:space-between}.overlay-panel{background:#14192af0;border:1px solid rgba(255,255,255,.18);border-radius:12px;padding:16px;margin:16px;pointer-events:auto}#material-toolbar,#material-toolbar *,button,#btn-delete,#btn-lock-surface,#btn-move-object{pointer-events:auto;position:relative;z-index:10}#gesture-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:5;pointer-events:none;touch-action:none;background:transparent}#gesture-layer.active{pointer-events:auto}.object-actions{display:none;position:absolute;right:24px;top:100px;padding:10px;flex-direction:column;gap:10px}.object-actions.visible{display:flex}.top-panel{margin-top:40px;align-self:center}.bottom-panel{margin-top:auto;margin-bottom:24px;width:100%}#scan-guide-text{font-weight:600;font-size:15px;margin-bottom:0}.material-scroll{display:flex;overflow-x:auto;gap:12px;padding-bottom:8px;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.material-scroll::-webkit-scrollbar{height:4px}.material-scroll::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}.material-btn{flex:0 0 80px;background:#ffffff1a;border:1px solid rgba(255,255,255,.2);border-radius:12px;padding:10px 8px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#fff;cursor:pointer;transition:all .2s ease}.material-btn:hover,.material-btn.selected{background:#3b82f64d;border-color:var(--primary);transform:translateY(-2px)}.material-icon{width:32px;height:32px;border-radius:8px;background:#0000004d}.material-name{font-size:11px;text-align:center;line-height:1.2}