.building-page{padding-top:var(--header)}.building-shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:calc(100svh - var(--header));gap:0}.building-sidebar{padding:30px 24px;border-right:1px solid var(--line);max-height:calc(100svh - var(--header));overflow:auto}.building-stage{position:relative;min-width:0;min-height:720px;background:var(--bg)}.building-canvas{position:absolute;inset:0}.building-canvas canvas{touch-action:none}.building-toolbar{position:absolute;left:32px;top:24px;z-index:2;right:32px;display:flex;justify-content:space-between;gap:20px;pointer-events:none}.building-toolbar>*{pointer-events:auto}.building-title h1{font-size:36px}.building-title p{font:10px var(--mono);color:var(--gold);margin-top:10px}.building-bottom{position:absolute;bottom:30px;left:32px;right:32px;z-index:2;display:flex;align-items:end;justify-content:space-between;gap:25px;flex-wrap:wrap}.floor-control{width:200px;background:var(--glass);padding:15px}.floor-control .row{justify-content:space-between;font:11px var(--mono)}.compass{width:65px;height:65px;border:1px solid var(--gold-dim);border-radius:50%;position:absolute;right:30px;top:125px;display:grid;place-content:center;font:10px var(--mono);color:var(--gold);pointer-events:none}.compass::after{content:'↑';font-size:23px;text-align:center}.scene-tooltip{position:absolute;pointer-events:none;background:var(--bg-2);border:1px solid var(--gold-dim);padding:12px 16px;font:10px/1.8 var(--mono);z-index:3;width:210px}.onboarding{position:absolute;left:32px;top:135px;z-index:4;background:var(--bg-2);border:1px solid var(--line);padding:20px;max-width:310px;font-size:12px}.onboarding p{margin-bottom:15px}@media(max-width:767px){.building-shell{display:block}.building-sidebar{display:none;max-height:none;padding:20px}.building-sidebar.open{display:block}.building-stage{height:78svh;min-height:650px}.building-toolbar{left:20px;right:20px;flex-wrap:wrap}.building-bottom{left:20px;right:20px;bottom:20px;gap:12px}.building-bottom .btn{min-height:40px;padding:9px;font-size:10px}.floor-control{width:100%}.building-title h1{font-size:29px}.compass{right:20px;top:140px}.onboarding{left:20px;top:200px;max-width:270px}}