:root{--panel-bg:#fff;--panel-border:#e3e6ea;--panel-shadow:0 1px 2px #1018280f, 0 4px 16px #10182814;--text:#1f2328;--muted:#6a737d;--hover:#f1f3f5;--accent:#1971c2;--accent-soft:#e7f1fb;--danger:#e03131;--radius:12px;--btn:40px;color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body{overscroll-behavior:none;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent;background:#fff;height:100%;margin:0;overflow:hidden}#board{touch-action:none;width:100%;height:100%;display:block;position:fixed;inset:0}.sidebar{pointer-events:none;flex-direction:column;justify-content:space-between;align-items:flex-end;gap:12px;display:flex;position:fixed;top:12px;bottom:12px;right:12px}.sidebar>*{pointer-events:auto}.panel{background:var(--panel-bg);border:1px solid var(--panel-border);border-radius:var(--radius);box-shadow:var(--panel-shadow)}.toolbar{scrollbar-width:none;flex-direction:column;gap:2px;min-height:0;padding:6px;display:flex;overflow-y:auto}.divider{background:var(--panel-border);flex:none;height:1px;margin:4px 6px}.btn{width:var(--btn);height:var(--btn);color:var(--text);cursor:pointer;font:inherit;background:0 0;border:0;border-radius:8px;flex:none;place-items:center;padding:0;display:grid}.btn:hover{background:var(--hover)}.btn:focus-visible,.swatch:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.btn.active{background:var(--accent-soft);color:var(--accent)}.btn:disabled{color:#c4c9cf;cursor:default;background:0 0}.btn.danger:hover{color:var(--danger);background:#fdecec}.style-swatch{box-shadow:0 0 0 2px #fff, 0 0 0 3px var(--panel-border);border-radius:50%;display:block}.popover{z-index:10;width:196px;padding:10px;display:none;position:fixed}.popover.open{display:block}.popover-label{color:var(--muted);margin:2px 2px 6px;font-size:12px;font-weight:600}.swatches{grid-template-columns:repeat(5,1fr);gap:6px;margin-bottom:10px;display:grid}.swatch{cursor:pointer;border:0;border-radius:50%;width:28px;height:28px;padding:0;position:relative;box-shadow:inset 0 0 0 1px #0000001f}.swatch.active{box-shadow:0 0 0 2px #fff, 0 0 0 4px var(--accent)}.swatch.custom{background:conic-gradient(#e03131,#f08c00,#fab005,#2f9e44,#1971c2,#7048e8,#c2255c,#e03131);overflow:hidden}.custom-color{opacity:0;cursor:pointer;width:100%;height:100%;position:absolute;inset:0}.sizes{justify-content:space-between;display:flex}.size-dot{border-radius:50%;display:block}.people{align-items:center;gap:4px;padding:4px 4px 4px 8px;display:flex}.avatars{display:flex}.avatar{color:#fff;cursor:default;border:2px solid #fff;border-radius:50%;place-items:center;width:30px;height:30px;margin-left:-6px;font-size:12px;font-weight:700;display:grid}.avatar:first-child{margin-left:0}.avatar.self{box-shadow:0 0 0 1px var(--panel-border)}.avatar.more{background:#868e96}.zoom{align-items:center;gap:2px;padding:4px;display:flex}.zoom .btn{width:34px;height:34px}.zoom .zoom-label{font-variant-numeric:tabular-nums;width:52px;font-size:13px}.status,.toast{opacity:0;pointer-events:none;white-space:nowrap;border-radius:999px;padding:8px 14px;font-size:13px;transition:opacity .2s,transform .2s;position:fixed;top:12px;left:50%;transform:translate(-50%,-8px)}.status{color:#9c4a00;background:#fff4e6;border:1px solid #ffd8a8}.toast{color:#fff;background:#1f2328;top:auto;bottom:16px}.status.visible,.toast.visible{opacity:1;transform:translate(-50%)}.backdrop{z-index:100;background:#0f172a40;place-items:center;padding:16px;display:grid;position:fixed;inset:0}.dialog{-webkit-user-select:text;user-select:text;background:#fff;border-radius:16px;flex-direction:column;gap:12px;width:min(360px,100%);padding:24px;display:flex;box-shadow:0 12px 40px #0f172a33}.dialog h1{margin:0;font-size:20px}.dialog p{color:var(--muted);margin:0 0 4px;font-size:14px}.dialog input{font:inherit;border:1px solid var(--panel-border);border-radius:8px;outline:none;padding:10px 12px;font-size:16px}.dialog input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.primary{font:inherit;background:var(--accent);color:#fff;cursor:pointer;border:0;border-radius:8px;padding:10px 12px;font-weight:600}.primary:disabled{opacity:.5;cursor:default}.menu-layer{z-index:50;position:fixed;inset:0}.context-menu{flex-direction:column;min-width:220px;padding:4px;display:flex;position:fixed}.menu-item{color:var(--text);font:inherit;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:6px;justify-content:space-between;align-items:center;gap:24px;padding:7px 10px;font-size:14px;display:flex}.menu-item:hover,.menu-item:focus-visible{background:var(--hover);outline:none}.menu-item.danger{color:var(--danger)}.menu-item kbd{font:inherit;color:var(--muted);font-size:12px}.menu-separator{background:var(--panel-border);height:1px;margin:4px 6px}