:root{--bg: #f6f6f4;--panel: #ffffff;--text: #1a1a1a;--muted: #6b6f76;--line: #e3e3e0;--accent: #1971c2;--danger: #c92a2a;--shadow: 0 1px 2px rgb(0 0 0 / 6%), 0 4px 14px rgb(0 0 0 / 8%);--canvas: #ffffff;--hover: #f1f1ef;--on-bg: #e7f0fa;--input: #ffffff;color-scheme:light}:root[data-theme=dark]{--bg: #121212;--panel: #1f1f1f;--text: #e8e8e6;--muted: #9a9ea6;--line: #333333;--accent: #4dabf7;--danger: #ff6b6b;--shadow: 0 1px 2px rgb(0 0 0 / 40%), 0 4px 14px rgb(0 0 0 / 40%);--canvas: #161616;--hover: #2a2a2a;--on-bg: #1d3247;--input: #181818;color-scheme:dark}[hidden]{display:none!important}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--text);font:15px/1.4 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;overscroll-behavior:none}#app{height:100%}button{font:inherit;color:inherit;background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:8px 14px;cursor:pointer}button:hover{border-color:var(--muted)}button.primary{background:var(--accent);border-color:var(--accent);color:#fff}button.small{padding:4px 10px;font-size:13px}button.danger{color:var(--danger)}button:disabled{opacity:.5}input{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--input);color:var(--text);width:100%}.muted{color:var(--muted)}.small{font-size:13px}.error{color:var(--danger)}.spacer{flex:1}.page{min-height:100%;padding:16px}.page.center{display:grid;place-items:center}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}.auth{width:min(360px,100%);display:grid;gap:12px}.auth h1,.auth p{margin:0}.row{display:flex;gap:8px}.row button{flex:1}.home{max-width:1100px;margin:0 auto}.home header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.home header h1{margin:0;font-size:22px}.ws{margin-bottom:28px}.ws-head{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:10px}.ws-head h2{margin:0;font-size:17px}.boards{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:10px}.tile{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:10px;min-height:84px;display:flex}.tile a{flex:1;padding:14px;color:inherit;text-decoration:none;font-weight:500;word-break:break-word}.tile:hover{border-color:var(--accent)}.tile-acts{position:absolute;right:6px;bottom:6px;display:flex;gap:4px}.tile.new{justify-content:center;align-items:center;color:var(--muted);border-style:dashed}.board{position:fixed;inset:0;overflow:hidden;background:var(--canvas);user-select:none;-webkit-user-select:none;-webkit-touch-callout:none}.stage{position:absolute;inset:0;touch-action:none}.board-canvas{position:absolute;inset:0;display:block;touch-action:none;cursor:crosshair}.stage[data-active=hand] .board-canvas{cursor:grab}.stage[data-active=eraser] .board-canvas{cursor:none}.eraser-dot{position:absolute;left:0;top:0;width:18px;height:18px;border:1.5px solid var(--muted);border-radius:50%;pointer-events:none;display:none;will-change:transform}.cursors{position:absolute;inset:0;pointer-events:none;overflow:hidden}.cursor{position:absolute;left:0;top:0;will-change:transform}.cursor i{position:absolute;left:-4px;top:-4px;width:8px;height:8px;border-radius:50%;background:var(--c)}.cursor span{position:absolute;left:8px;top:4px;background:var(--c);color:#fff;font-size:11px;padding:1px 6px;border-radius:6px;white-space:nowrap}.bar{position:absolute;top:10px;display:flex;align-items:center;gap:6px;background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:4px;box-shadow:var(--shadow);touch-action:manipulation}.bar-left{left:10px}.bar-right{right:10px;padding:4px 10px}.bar-props{left:50%;transform:translate(-50%);max-width:calc(100vw - 20px);overflow-x:auto;scrollbar-width:none}.bar-side{left:10px;top:50%;transform:translateY(-50%);flex-direction:column;gap:2px}.bar-side .sep{width:24px;height:1px;background:var(--line);margin:4px 0}.shape-menu{left:62px;top:50%;transform:translateY(-50%);display:grid;grid-template-columns:repeat(2,36px);gap:2px}.selbar{left:0;top:0;padding:4px;gap:2px;will-change:transform}.selbar button{display:flex;align-items:center;gap:6px;height:34px;padding:0 10px!important;font-size:13px}.selbar svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.grp{display:flex;align-items:center;gap:2px;padding:0 4px}.grp+.grp{border-left:1px solid var(--line)}.bar button{border:none;background:transparent;border-radius:8px;padding:0;flex:none}.ib{width:36px;height:36px;display:grid;place-items:center}.ib svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.bar button:hover{background:var(--hover)}.bar button.on{background:var(--on-bg);color:var(--accent)}.title{padding:0 10px!important;height:36px;max-width:220px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}.sw{width:28px;height:28px;display:grid;place-items:center;border-radius:50%!important;cursor:pointer;flex:none}.sw:after{content:"";width:18px;height:18px;border-radius:50%;background:var(--c)}.sw.on{box-shadow:inset 0 0 0 2px var(--accent);background:transparent!important}.sw.custom input{position:absolute;opacity:0;width:0;height:0}.slider{gap:8px;padding:0 8px}.slider .dot{width:26px;height:26px;display:grid;place-items:center;flex:none}.slider .dot i{display:block;border-radius:50%}.slider input[type=range]{width:120px;height:36px;padding:0;margin:0;border:0;background:transparent;accent-color:var(--accent);cursor:pointer;touch-action:none}.slider .val{min-width:40px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.zoom{min-width:54px;height:36px;font-size:13px;font-variant-numeric:tabular-nums}.status{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;min-width:64px}.status i{width:8px;height:8px;border-radius:50%;background:#aaa}.status i.open{background:#2f9e44}.status i.connecting{background:#f08c00}.status i.closed{background:#e03131}.peers{display:flex;gap:3px}.peer{width:24px;height:24px;border-radius:50%;background:var(--c);color:#fff;font-size:12px;display:grid;place-items:center;font-weight:600}.peers:empty{display:none}.banner{position:absolute;left:50%;top:60px;transform:translate(-50%);background:var(--panel);border:1px solid var(--danger);padding:10px 16px;border-radius:10px}@media(max-width:900px){.bar-left .title{display:none}.bar-props{top:auto;bottom:10px}}