.mobile-overlay{position:fixed;top:0;left:0;right:0;height:56px;z-index:100;display:flex;justify-content:space-between;align-items:center;padding:0 12px;gap:12px;background:#0f172ab3;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.1);transition:all .3s ease}.mobile-fps{font-size:14px;font-weight:600;color:#10b981;font-family:Courier New,monospace;letter-spacing:.5px}.mobile-polytope-selector{min-height:40px;padding:6px 26px 6px 10px;flex:1;max-width:none;font-size:13px;font-weight:600;color:#fff;background:#8b5cf633;border:1px solid rgba(139,92,246,.4);border-radius:8px;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ffffff' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 8px center;cursor:pointer;transition:all .2s ease;-webkit-tap-highlight-color:transparent}.mobile-polytope-selector:hover,.mobile-polytope-selector:focus{background:#8b5cf64d;border-color:#8b5cf699;outline:none}.mobile-polytope-selector option{background:#1e293b;color:#fff;padding:8px}.mobile-fab{position:relative;z-index:200;width:40px;height:40px;border-radius:10px;flex-shrink:0;background:linear-gradient(135deg,#8b5cf6,#ec4899);border:none;box-shadow:0 2px 8px #8b5cf666,0 1px 2px #0003;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .3s cubic-bezier(.4,0,.2,1);-webkit-tap-highlight-color:transparent}.mobile-fab:hover{transform:scale(1.05);box-shadow:0 4px 12px #8b5cf680,0 2px 4px #0000004d}.mobile-fab:active{transform:scale(.95)}.mobile-fab.active{background:linear-gradient(135deg,#ec4899,#8b5cf6)}.fab-icon{width:20px;height:20px;transition:transform .3s ease}.mobile-fab.active .fab-icon{transform:rotate(90deg)}.mobile-sheet{position:fixed;bottom:0;left:0;right:0;z-index:150;height:80vh;max-height:600px;background:#0f172af2;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-top-left-radius:24px;border-top-right-radius:24px;border-top:2px solid rgba(139,92,246,.3);box-shadow:0 -4px 20px #0000004d,0 -1px 4px #8b5cf633;transform:translateY(100%);transition:transform .4s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;overflow:hidden}.mobile-sheet.visible{transform:translateY(0)}.sheet-header{flex-shrink:0;padding:16px 20px 12px;border-bottom:1px solid rgba(255,255,255,.1);text-align:center;position:relative}.sheet-handle{width:40px;height:4px;background:#ffffff4d;border-radius:2px;margin:0 auto 12px;transition:background .2s ease}.sheet-handle:hover{background:#ffffff80}.sheet-title{font-size:18px;font-weight:700;color:#fff;margin:0;letter-spacing:.5px;text-transform:uppercase}.sheet-content{flex:1;overflow-y:auto;overflow-x:hidden;padding:20px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.sheet-content::-webkit-scrollbar{width:6px}.sheet-content::-webkit-scrollbar-track{background:#ffffff0d;border-radius:3px}.sheet-content::-webkit-scrollbar-thumb{background:#8b5cf680;border-radius:3px}.sheet-content::-webkit-scrollbar-thumb:hover{background:#8b5cf6b3}.mobile-section{margin-bottom:24px;padding:16px;background:#ffffff0d;border-radius:12px;border:1px solid rgba(255,255,255,.1)}.mobile-section:last-child{margin-bottom:0}.mobile-section button,.mobile-section input,.mobile-section select,.mobile-section label{min-height:48px;min-width:48px;font-size:16px}.mobile-section input[type=checkbox],.mobile-section input[type=radio]{min-width:24px;min-height:24px;transform:scale(1.5);margin:12px}@media (min-width: 1024px){.mobile-overlay,.mobile-fab,.mobile-sheet{display:none!important}}@media (max-width: 1023px){.info-panel,.control-panel{display:none!important}.mobile-overlay,.mobile-fab,.mobile-sheet{display:flex}#viewer-canvas{position:fixed;top:0;left:0;width:100vw;height:100vh}}@media (max-width: 375px){.mobile-fab{width:36px;height:36px}.fab-icon{width:18px;height:18px}.mobile-polytope-selector{font-size:12px;padding:4px 22px 4px 8px}.mobile-fps{font-size:11px}.mobile-overlay{padding:0 8px;gap:8px}.mobile-sheet{max-height:70vh}.sheet-content{padding:16px}.mobile-section{padding:12px;margin-bottom:16px}}@media (min-width: 768px) and (max-width: 1023px){.mobile-overlay{height:64px;padding:0 24px;gap:16px}.mobile-fps{font-size:16px}.mobile-fab{width:48px;height:48px}.fab-icon{width:24px;height:24px}.mobile-polytope-selector{font-size:14px;min-height:44px}.mobile-sheet{max-height:500px}.sheet-content{padding:24px}}@media (max-width: 1023px) and (orientation: landscape){.mobile-sheet{max-height:90vh}.mobile-overlay{height:48px}}.mobile-fab:focus-visible{outline:3px solid #8b5cf6;outline-offset:2px}.mobile-section button:focus-visible,.mobile-section input:focus-visible,.mobile-section select:focus-visible{outline:2px solid #8b5cf6;outline-offset:2px}@media (prefers-reduced-motion: reduce){.mobile-fab,.mobile-sheet,.mobile-overlay,.fab-icon,.sheet-handle{transition:none}}@media (prefers-contrast: high){.mobile-overlay,.mobile-sheet{border-width:2px;border-color:#fff}.mobile-fab{border:2px solid #ffffff}}