:root{--bg: #1a1a1a;--panel: #2a2a2a;--panel-2: #3a3a3a;--border: #4a4a4a;--text: #f0f0f0;--text-dim: #999;--accent: #4cc2ff}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%;margin:0;overflow:hidden;overscroll-behavior:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent;touch-action:none}body{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text)}button{font:inherit;color:inherit;background:var(--panel-2);border:1px solid var(--border);border-radius:12px;padding:0;min-width:60px;min-height:60px;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;-webkit-tap-highlight-color:transparent;transition:transform .05s}button:active{transform:scale(.94)}button[aria-pressed=true]{background:var(--accent);color:var(--bg);border-color:var(--accent)}.app{display:grid;grid-template-columns:minmax(0,1fr);grid-template-rows:auto 1fr auto auto;height:100%;width:100%}.toolbar{background:var(--panel);padding:12px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;border-bottom:1px solid var(--border)}.tool-group{display:flex;gap:8px;align-items:center}.tool-group+.tool-group{padding-left:12px;border-left:1px solid var(--border)}.palette{display:flex;gap:6px;flex-wrap:wrap;padding-left:12px;border-left:1px solid var(--border)}.color-btn{min-width:48px;min-height:48px;border-radius:10px;border:2px solid var(--border)}.color-btn[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 2px var(--bg) inset,0 0 0 4px var(--accent) inset}.brush-dot{display:block;border-radius:50%;background:currentColor}.brush-dot.brush-small{width:6px;height:6px}.brush-dot.brush-medium{width:14px;height:14px}.brush-dot.brush-large{width:24px;height:24px}.toolbar-actions{margin-left:auto;display:flex;gap:8px}.canvas-area{display:flex;align-items:center;justify-content:center;min-height:0;min-width:0;padding:16px}.canvas-stack{display:grid;aspect-ratio:1 / 1;max-width:100%;max-height:100%;background:#fff;border-radius:8px;box-shadow:0 4px 16px #00000080;overflow:hidden}.canvas-stack canvas{grid-area:1 / 1;width:100%;height:100%;display:block}.drawing-canvas{touch-action:none}.onion-skin-canvas{opacity:.3;pointer-events:none}.playback{background:var(--panel);padding:12px;border-top:1px solid var(--border);display:flex;align-items:center;justify-content:center;gap:16px;color:var(--text);font-size:14px;flex-wrap:wrap}.play-btn{background:var(--accent);color:var(--bg);border-color:var(--accent);min-width:80px;font-weight:600}.frame-counter{font-variant-numeric:tabular-nums;color:var(--text-dim);min-width:60px;text-align:center;font-weight:500}.fps-group{display:flex;gap:6px}.fps-btn{min-width:56px;min-height:44px;font-size:13px;padding:0 8px}.export-btn{padding:0 16px;gap:8px;min-width:120px;font-weight:600}.export-btn:disabled{opacity:.6;cursor:wait}.toolbar{position:relative}.palette-trigger{padding:6px}.trigger-swatch{width:44px;height:44px;border-radius:8px;border:2px solid var(--border);display:flex;align-items:center;justify-content:center;position:relative}.trigger-dot{background:#fff;outline:1.5px solid black;outline-offset:-1px}.palette-popover{position:absolute;top:calc(100% + 4px);left:12px;right:12px;padding:12px;background:var(--panel-2);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 28px #0000008c;z-index:10;display:flex;flex-wrap:wrap;gap:12px;align-items:center}.palette-popover .tool-group,.palette-popover .palette{border-left:none;padding-left:0}.frame-strip.collapsed{min-height:56px;padding:8px 12px}.frame-strip-handle{display:flex;align-items:center;gap:12px;background:transparent;border:none;width:100%;min-height:40px;padding:0 4px;color:var(--text);justify-content:flex-start}.frame-strip-handle canvas{display:block;width:40px;height:40px;background:#fff;border-radius:4px;border:2px solid var(--accent)}.frame-counter-small{font-variant-numeric:tabular-nums;color:var(--text-dim);font-weight:500;flex:1;text-align:left}@media (max-width: 500px){.toolbar{gap:6px;padding:8px 10px}.toolbar .tool-group,.toolbar-actions{gap:6px}.toolbar button{min-width:48px;min-height:48px}.palette-trigger{padding:4px}.trigger-swatch{width:36px;height:36px}}.frame-strip{background:var(--panel);padding:12px;border-top:1px solid var(--border);display:flex;gap:12px;align-items:stretch;min-height:104px;min-width:0}.frames-scroll{flex:1;display:flex;gap:8px;overflow-x:auto;align-items:center;min-width:0;scroll-behavior:smooth}.frame-thumb{flex-shrink:0;position:relative;min-width:72px;min-height:72px;padding:4px;border-radius:8px;background:var(--panel-2);border:2px solid var(--border)}.frame-thumb canvas{display:block;width:64px;height:64px;background:#fff;border-radius:4px}.frame-thumb[aria-pressed=true]{border-color:var(--accent);background:var(--panel)}.frame-number{position:absolute;top:2px;left:4px;font-size:11px;color:var(--text);background:#0000008c;padding:1px 5px;border-radius:4px;font-weight:600;pointer-events:none}.add-frame-btn{flex-shrink:0;min-width:72px;min-height:72px;border:2px dashed var(--border);background:transparent;border-radius:8px;color:var(--text-dim)}.frame-actions{display:flex;gap:8px;flex-shrink:0;padding-left:12px;align-items:center;border-left:1px solid var(--border)}.frame-actions button:disabled{opacity:.4;cursor:not-allowed}.icon{width:28px;height:28px;fill:currentColor}