#canvasViewHistory{position:fixed;top:calc(var(--toolbar-height,36px) + 44px);left:18px;display:flex;gap:2px;padding:3px;border:1px solid var(--ui-border, #34545e);border-radius:9px;background:var(--ui-surface, #10262d);box-shadow:0 3px 12px #0003;z-index:var(--z-panel,100);font:12px var(--ui-font,system-ui)}
#canvasViewHistory[hidden]{display:none}
#canvasViewHistory button{font:inherit;color:var(--ui-text-bright,#eaf4fa);background:transparent;border:0;border-radius:6px;padding:7px 10px;cursor:pointer;white-space:nowrap}
#canvasViewHistory button:hover:not(:disabled){background:rgba(125,180,215,.15)}
#canvasViewHistory button:disabled{opacity:.35;cursor:default}
#canvasViewHistory button:focus-visible{outline:2px solid #38bdf8;outline-offset:-1px}
@media(max-width:600px){#canvasViewHistory{left:8px}#canvasViewHistory button{min-height:36px}}