:root{--background: 210 33% 99%;--foreground: 240 10% 3.9%;--card: 0 0% 100%;--card-foreground: 240 10% 3.9%;--primary: 240 5.9% 10%;--primary-foreground: 0 0% 98%;--secondary: 240 4.8% 95.9%;--secondary-foreground: 240 5.9% 10%;--muted: 240 4.8% 95.9%;--muted-foreground: 240 3.8% 35%;--border: 240 5.9% 90%;--ring: 240 5.9% 10%}.dark{--background: 240 10% 3.9%;--foreground: 0 0% 98%;--card: 240 10% 3.9%;--card-foreground: 0 0% 98%;--primary: 0 0% 98%;--primary-foreground: 240 5.9% 10%;--secondary: 240 3.7% 15.9%;--secondary-foreground: 0 0% 98%;--muted: 240 3.7% 15.9%;--muted-foreground: 240 5% 64.9%;--border: 240 3.7% 15.9%;--ring: 240 4.9% 83.9%}*{margin:0;padding:0;box-sizing:border-box}html,body{width:100%;height:100%;overflow:hidden}canvas{display:block;width:100vw;height:100vh;cursor:crosshair}#panel{position:absolute;top:12px;right:12px;z-index:10;background:hsl(var(--card));color:hsl(var(--card-foreground));border:1px solid hsl(var(--border));border-radius:12px;box-shadow:0 4px 24px #0000001f;width:260px;overflow:hidden;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-size:13px;max-height:calc(100vh - 24px);overflow-y:auto}@media (max-width: 480px){#panel{inset:auto 0 0;width:100%;border-radius:12px 12px 0 0;max-height:55vh}}#panel-header{padding:14px 16px 10px;font-size:10px;color:hsl(var(--muted-foreground));text-transform:uppercase;letter-spacing:1.5px;border-bottom:1px solid hsl(var(--border));display:flex;justify-content:space-between;align-items:center}#back-link{font-size:11px;color:hsl(var(--muted-foreground));text-decoration:none;text-transform:none;letter-spacing:0}#back-link:hover{color:hsl(var(--foreground))}.section{padding:10px 12px;border-bottom:1px solid hsl(var(--border))}.section:last-child{border-bottom:none}.section-label{font-size:10px;color:hsl(var(--muted-foreground));text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}.plan-row{display:flex;gap:4px;align-items:center}.plan-row select,.room-purpose{flex:1;background:hsl(var(--secondary));border:1px solid hsl(var(--border));border-radius:6px;color:hsl(var(--foreground));font-size:11px;padding:3px 4px;font-family:inherit}.plan-row select{font-size:12px;padding:4px 6px}.plan-row select:focus,.room-purpose:focus{outline:1px solid hsl(var(--ring))}.sm-btn{background:hsl(var(--secondary));border:1px solid hsl(var(--border));color:hsl(var(--foreground));border-radius:6px;width:28px;height:28px;cursor:pointer;font-size:13px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.sm-btn:hover{background:hsl(var(--muted))}.tool-row{display:flex;gap:4px;flex-wrap:wrap}.tool-btn{font-size:10px;padding:5px 8px;border:1px solid hsl(var(--border));border-radius:6px;cursor:pointer;font-family:inherit;background:hsl(var(--secondary));color:hsl(var(--foreground));font-weight:500}.tool-btn:hover{background:hsl(var(--muted))}.tool-btn.active{background:hsl(var(--primary));color:hsl(var(--primary-foreground));border-color:hsl(var(--primary))}.room-row{display:flex;align-items:center;gap:4px;padding:3px 0}.room-label{font-size:11px;width:16px;text-align:center;flex-shrink:0}.room-del{background:none;border:none;cursor:pointer;color:hsl(var(--muted-foreground));font-size:11px;padding:0 2px}.room-del:hover{color:hsl(var(--foreground))}.room-empty{font-size:11px;color:hsl(var(--muted-foreground));padding:2px 0}.furn-item{display:flex;align-items:center;justify-content:space-between;padding:4px 0}.furn-info{display:flex;align-items:center;gap:6px}.furn-dot{width:8px;height:8px;border-radius:2px;flex-shrink:0}.furn-name{font-size:11px}.furn-size{font-size:10px;color:hsl(var(--muted-foreground))}.furn-add{font-size:10px;padding:2px 8px;border:1px solid hsl(var(--border));border-radius:4px;cursor:pointer;background:hsl(var(--secondary));color:hsl(var(--foreground));font-family:inherit}.furn-add:hover{background:hsl(var(--muted))}.sel-row{display:flex;gap:4px;align-items:center;margin-top:4px}.sel-name{font-size:12px;font-weight:500;flex:1}.action-btn{font-size:10px;padding:4px 10px;border:none;border-radius:6px;cursor:pointer;font-weight:600;font-family:inherit;transition:opacity .15s}.action-btn:hover{opacity:.85}.action-btn.rotate{background:#3b82f6;color:#fff}.action-btn.lock{background:#f59e0b;color:#fff}.action-btn.locked{background:#d97706;color:#fff}.action-btn.delete{background:#ef4444;color:#fff}.action-btn.optimize{background:#8b5cf6;color:#fff;width:100%;padding:6px}.action-btn.apply{background:#22c55e;color:#fff}.arr-row{display:flex;gap:4px;align-items:center;margin-top:6px}.arr-label{font-size:11px;flex:1;text-align:center}.arr-btn{background:hsl(var(--secondary));border:1px solid hsl(var(--border));color:hsl(var(--foreground));border-radius:4px;width:24px;height:24px;cursor:pointer;font-size:12px}.hint{font-size:11px;color:hsl(var(--muted-foreground));padding:4px 0;line-height:1.5}.io-row{display:flex;gap:4px;margin-bottom:6px}.io-btn{font-size:10px;padding:4px 10px;border:none;border-radius:6px;cursor:pointer;font-weight:600;font-family:inherit;transition:opacity .15s;flex:1}.io-btn:hover{opacity:.85}.io-btn.export{background:#2563eb;color:#fff}.io-btn.import{background:#0891b2;color:#fff}.io-btn.file{background:#6366f1;color:#fff}.io-btn.success{background:#16a34a;color:#fff}.io-btn.error{background:#ef4444;color:#fff}#io-text{width:100%;min-height:80px;max-height:200px;background:hsl(var(--secondary));border:1px solid hsl(var(--border));border-radius:6px;color:hsl(var(--foreground));font-size:10px;font-family:SF Mono,Consolas,monospace;padding:6px 8px;resize:vertical}#io-text:focus{outline:1px solid hsl(var(--ring))}#io-text::-moz-placeholder{color:hsl(var(--muted-foreground))}#io-text::placeholder{color:hsl(var(--muted-foreground))}.action-btn.copy{background:#0ea5e9;color:#fff}.action-btn.group{background:#14b8a6;color:#fff}.action-btn.ungroup{background:#64748b;color:#fff}.score-breakdown{font-size:10px;margin-top:6px;line-height:1.6;color:hsl(var(--muted-foreground))}.score-row{display:flex;justify-content:space-between}.score-pos{color:#22c55e}.score-neg{color:#ef4444}.bg-controls{display:flex;flex-direction:column;gap:4px;margin-top:4px}.bg-controls label{font-size:10px;color:hsl(var(--muted-foreground));display:flex;align-items:center;gap:4px}.bg-controls input[type=range]{flex:1;height:14px}.bg-controls input[type=number]{width:50px}#status-bar{position:absolute;bottom:12px;left:12px;z-index:10;background:hsl(var(--card));border:1px solid hsl(var(--border));border-radius:8px;padding:6px 12px;font-size:11px;font-family:Inter,-apple-system,sans-serif;color:hsl(var(--muted-foreground));box-shadow:0 2px 8px #00000014}#zoom-controls{position:absolute;left:16px;top:50%;transform:translateY(-50%);z-index:9;display:flex;flex-direction:column;align-items:center;gap:2px;background:hsl(var(--card));border:1px solid hsl(var(--border));border-radius:10px;padding:4px;box-shadow:0 2px 8px #0000001a;font-family:Inter,-apple-system,sans-serif}#zoom-controls button{width:36px;height:36px;border:none;border-radius:8px;background:transparent;color:hsl(var(--foreground));font-size:20px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center}#zoom-controls button:hover{background:hsl(var(--accent))}#zoom-level{font-size:10px;text-align:center;padding:2px 0;color:hsl(var(--muted-foreground));border-top:1px solid hsl(var(--border));border-bottom:1px solid hsl(var(--border));width:100%}#zoom-controls .zoom-fit{font-size:11px;font-weight:500}@media (max-width: 480px){#zoom-controls{left:12px;top:auto;bottom:58vh;transform:none}}