*,:before,:after{box-sizing:border-box}:root{--bg:#fafaf9;--surface:#fff;--border:#e7e5e4;--text:#1c1917;--muted:#78716c;--accent:#2563eb;--shadow:0 4px 16px #00000014, 0 1px 3px #0000000f;color:var(--text);background:var(--bg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif}html,body{overscroll-behavior:none;height:100%;margin:0}button{font:inherit;color:inherit}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.button{border:1px solid var(--border);background:var(--surface);cursor:pointer;border-radius:8px;padding:8px 14px;font-size:14px;font-weight:500}.button:hover:not(:disabled){background:#f5f5f4}.button:disabled{opacity:.5;cursor:not-allowed}.button-primary{background:var(--accent);border-color:var(--accent);color:#fff}.button-primary:hover:not(:disabled){background:#1d4ed8}.landing{text-align:center;background-image:radial-gradient(#d6d3d1 1px,#0000 1px);background-size:24px 24px;flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:100%;padding:24px;display:flex}.landing-title{width:min(360px,100%);margin:0}.landing-title img{width:100%;height:auto;display:block}.landing-tagline{max-width:420px;color:var(--muted);margin:0 0 8px;line-height:1.5}.landing .button{padding:12px 24px;font-size:16px}.fullscreen-message{height:100%;color:var(--muted);justify-content:center;align-items:center;display:flex}.error-banner{z-index:20;color:#991b1b;background:#fef2f2;border:1px solid #fecaca;border-radius:8px;max-width:min(560px,100% - 32px);padding:10px 14px;font-size:14px;position:fixed;top:64px;left:50%;transform:translate(-50%)}.modal-backdrop{background:#1c191740;justify-content:center;align-items:center;padding:16px;display:flex;position:fixed;inset:0}.modal{background:var(--surface);width:100%;max-width:360px;box-shadow:var(--shadow);border-radius:12px;flex-direction:column;gap:12px;padding:24px;display:flex}.modal h2{margin:0;font-size:20px}.modal label{color:var(--muted);font-size:14px}.modal input{font:inherit;border:1px solid var(--border);border-radius:8px;padding:10px 12px}.modal input:focus{outline:2px solid var(--accent);outline-offset:-1px}.board{background-color:var(--bg);-webkit-user-select:none;user-select:none;background-image:radial-gradient(#e7e5e4 1px,#0000 1px);background-size:24px 24px;position:fixed;inset:0;overflow:hidden}.canvas{touch-action:none;cursor:crosshair;width:100%;height:100%;position:absolute;inset:0}.canvas-content{transform-box:view-box;transform-origin:50%}.canvas[data-tool=eraser]{cursor:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20'%3E%3Ccircle cx='10' cy='10' r='8' fill='white' fill-opacity='0.6' stroke='%23444' stroke-width='1.5'/%3E%3C/svg%3E") 10 10,cell}.canvas[data-tool=text]{cursor:text}.text-input{outline:1px solid var(--accent);background:var(--surface);-webkit-user-select:text;user-select:text;border:0;width:100%;height:36px;padding:0;font-family:inherit}.canvas[data-tool=hand],.canvas[data-pan-mode=true]{cursor:grab}.canvas[data-panning=true]{cursor:grabbing}.topbar{pointer-events:none;flex-wrap:wrap;justify-content:space-between;align-items:center;row-gap:8px;display:flex;position:absolute;top:12px;left:12px;right:12px}.topbar>*{pointer-events:auto}.brand{flex-shrink:0}.brand img{width:auto;max-width:100%;height:26px;display:block}.topbar-control{border:1px solid var(--border);background:var(--surface);height:36px;min-height:36px;box-shadow:var(--shadow);border-radius:8px;align-items:center;padding:0 12px;display:inline-flex}.topbar-left{align-items:center;gap:12px;min-width:0;display:flex}.board-updated{min-width:0;color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;line-height:18px;overflow:hidden}.topbar-right{align-items:center;gap:12px;margin-left:auto;display:flex}.topbar-right .button{box-shadow:var(--shadow)}.share{position:relative}.share-options{z-index:1;border:1px solid var(--border);background:var(--surface);min-width:190px;box-shadow:var(--shadow);border-radius:8px;padding:6px;position:absolute;top:100%;right:0}.share-options button{text-align:left;white-space:nowrap;cursor:pointer;background:0 0;border:0;border-radius:6px;width:100%;padding:9px 10px;font-size:14px;display:block}.share-options button:hover,.share-options button:focus-visible{background:#f5f5f4}.avatars{padding-left:8px;display:flex}.avatar{color:#fff;width:32px;height:32px;box-shadow:var(--shadow);border:2px solid #fff;border-radius:50%;justify-content:center;align-items:center;margin-left:-8px;font-size:12px;font-weight:600;display:flex}.avatar-more{background:var(--muted)}.toolbar{background:var(--surface);box-shadow:var(--shadow);border-radius:12px;align-items:center;gap:8px;max-width:calc(100% - 24px);padding:8px;display:flex;position:absolute;bottom:16px;left:50%;overflow-x:auto;transform:translate(-50%)}.toolbar-group{align-items:center;gap:4px;display:flex}.toolbar-divider{background:var(--border);align-self:stretch;width:1px}.tool-button{cursor:pointer;background:0 0;border:none;border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;display:flex}.tool-button:hover{background:#f5f5f4}.tool-button[aria-pressed=true],.tool-button[aria-checked=true]{color:var(--accent);background:#dbeafe}.swatch{width:24px;height:24px;box-shadow:0 0 0 1px var(--border);cursor:pointer;border:2px solid #fff;border-radius:50%;flex-shrink:0;margin:0 2px}.swatch[aria-checked=true]{box-shadow:0 0 0 2px var(--accent)}.size-dot{border-radius:50%;display:block}.zoom-controls{background:var(--surface);box-shadow:var(--shadow);border-radius:12px;flex-direction:column;align-items:center;gap:8px;padding:8px 6px;display:flex;position:absolute;top:50%;right:16px;transform:translateY(-50%)}.zoom-button{cursor:pointer;background:0 0;border:0;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;font-size:20px;line-height:1;display:flex}.zoom-button:hover:not(:disabled){background:#f5f5f4}.zoom-button:disabled{color:var(--muted);cursor:not-allowed}.zoom-center{flex-shrink:0;width:51px;padding:0}.zoom-slider{writing-mode:vertical-lr;width:24px;height:120px;accent-color:var(--accent);cursor:pointer;touch-action:none;direction:rtl;margin:0}.zoom-slider:focus-visible,.zoom-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.zoom-value{min-width:40px;color:var(--muted);text-align:center;font-size:12px}.cursors{pointer-events:none;transform-origin:50%;position:absolute;inset:0;overflow:visible}.cursor{position:absolute;top:0;left:0}.cursor-label{color:#fff;white-space:nowrap;border-radius:6px;padding:2px 6px;font-size:12px;position:absolute;top:16px;left:12px}