:root{color-scheme:dark;font-family:system-ui,sans-serif;--bg: #15171c;--bg-2: #1f232b;--bg-3: #262b35;--border: #2c313b;--text: #e6e6e6;--muted: #9aa2ad;--accent: #6ea8ff;--danger: #d96b6b;--warn: #d9b765;--floor: #2c2f38;--wall: #5a6172;--wall-edge: #383d49;--door: #6ea8ff;--door-hover: #98c2ff;--corner: #1a1d23}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text)}.app{display:grid;grid-template-columns:220px 1fr 280px;grid-template-rows:100vh;gap:0}aside,main{overflow:auto}aside{background:var(--bg-2);border-right:1px solid var(--border);padding:12px}aside.info{border-right:none;border-left:1px solid var(--border)}aside h2{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin:16px 0 6px}aside h2:first-of-type{margin-top:0}aside header{display:flex;align-items:center;justify-content:space-between}#room-list{list-style:none;padding:0;margin:8px 0 0}#room-list li{padding:6px 10px;border-radius:6px;cursor:pointer;font-size:13px;display:flex;justify-content:space-between;gap:8px}#room-list li:hover{background:var(--bg-3)}#room-list li.active{background:var(--bg-3);outline:1px solid var(--accent)}#room-list li .meta{color:var(--muted);font-size:11px}#room-list li.dirty:after{content:"●";color:var(--warn);margin-left:4px}main.workspace{display:flex;flex-direction:column;padding:16px;gap:12px}.toolbar{display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:10px 12px;background:var(--bg-2);border:1px solid var(--border);border-radius:8px}.toolbar label{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}.toolbar input[type=text],.toolbar input[type=number]{background:var(--bg-3);border:1px solid var(--border);border-radius:4px;color:var(--text);padding:4px 8px;font:inherit;font-size:13px}.toolbar input[type=number]{width:56px}.toolbar input[type=text]{width:160px}.toolbar input:disabled{color:var(--muted)}button{background:var(--bg-3);border:1px solid var(--border);border-radius:4px;color:var(--text);padding:6px 12px;cursor:pointer;font:inherit;font-size:13px}button:hover{background:#303642;border-color:#404653}button.danger{border-color:#4a2828;color:var(--danger)}button.danger:hover{background:#3a1f1f}#status{margin-left:auto;color:var(--muted);font-size:12px}#status.dirty{color:var(--warn)}#status.error{color:var(--danger)}#status.ok{color:#7bc88a}.grid-wrap{flex:1;display:flex;align-items:center;justify-content:center;background:var(--bg-2);border:1px solid var(--border);border-radius:8px;padding:24px;overflow:auto}#grid{display:grid;gap:2px;background:var(--wall-edge);padding:2px;border-radius:4px}.cell{width:36px;height:36px;background:var(--floor);display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted);position:relative}.cell.perim-wall{background:var(--wall);cursor:pointer}.cell.perim-wall:hover{background:var(--door-hover)}.cell.perim-door{background:var(--door);cursor:pointer;color:#15171c;font-weight:600}.cell.perim-door:hover{background:#9bc1ff}.cell.perim-corner{background:var(--corner);cursor:not-allowed}.cell.interior{cursor:crosshair;background:var(--floor)}.cell.interior.blocked{background:var(--wall-edge)}.cell.interior.has-tile{background-image:var(--tileset-url);background-repeat:no-repeat;background-size:1764px 792px;image-rendering:pixelated}.cell.interior.blocked:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;background:repeating-linear-gradient(45deg,rgba(217,107,107,.18) 0,rgba(217,107,107,.18) 4px,transparent 4px,transparent 8px);outline:1px solid rgba(217,107,107,.6);outline-offset:-2px}.cell .label{font-size:9px}.tool-row{display:flex;flex-wrap:wrap;gap:16px;align-items:center;padding:8px 12px;background:var(--bg-2);border:1px solid var(--border);border-radius:8px}.tool-group{display:flex;align-items:center;gap:8px}.tool-label{font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}.tool-btn.active{background:var(--accent);color:#15171c;border-color:var(--accent)}.muted{color:var(--muted);font-size:12px}.tile-thumb{width:36px;height:36px;background-color:var(--bg-3);background-image:var(--tileset-url);background-repeat:no-repeat;background-size:1764px 792px;image-rendering:pixelated;border:1px solid var(--border);border-radius:4px}.tile-thumb.empty{background-image:none}.palette-wrap{background:var(--bg-2);border:1px solid var(--border);border-radius:8px;padding:8px 12px 12px;display:flex;flex-direction:column;gap:6px}.palette-header{display:flex;gap:12px;align-items:baseline}.palette{max-height:280px;overflow:auto;background:#0e1014;border-radius:4px;padding:4px;display:grid;grid-template-columns:repeat(49,20px);gap:1px}.palette .ptile{width:20px;height:20px;background-image:var(--tileset-url);background-repeat:no-repeat;background-size:980px 440px;image-rendering:pixelated;cursor:pointer;outline:0 solid transparent;outline-offset:-1px}.palette .ptile:hover{outline:1px solid var(--door-hover)}.palette .ptile.selected{outline:2px solid var(--accent)}.hint{color:var(--muted);font-size:12px}#issues,#summary{list-style:none;padding:0;margin:0;font-size:12px}#issues li,#summary li{padding:4px 6px;border-radius:4px}#issues li.error{color:var(--danger)}#issues li.warning{color:var(--warn)}#issues li.ok{color:#7bc88a}#summary li{color:var(--muted)}#summary li b{color:var(--text);font-weight:600}ul.help{list-style:disc;padding-left:16px;margin:0;font-size:12px;color:var(--muted)}ul.help li{margin-bottom:6px}ul.help code{background:var(--bg-3);padding:1px 4px;border-radius:3px}