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button.active{color:var(--md-sys-color-on-primary);background:var(--md-sys-color-primary);border-radius:24px}.tool-group button:active{border-radius:12px}.brush-size{min-height:44px;color:var(--muted);align-items:center;gap:8px;font-size:.875rem;display:flex}.brush-size input{width:clamp(80px,8vw,120px);height:44px;min-height:44px;accent-color:var(--md-sys-color-primary);background:0 0;border:0;padding:0}.brush-size output{font-variant-numeric:tabular-nums;min-width:2ch;font-weight:700}.history-tools{gap:4px;margin-left:auto}.history-tools button{background:var(--md-sys-color-surface);padding-inline:12px}.history-tools button:hover:not(:disabled){background:var(--md-sys-color-primary-container)}.color-tools{border-top:1px solid var(--line);flex-wrap:wrap;gap:2px;padding-top:8px}.color-tools>button{border:6px solid 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