:root{--bg: #ffffff;--grid: #111111;--text: #111111;--x-color: #e5484d;--o-color: #2f6fed;--cell-bg: #ffffff;--cell-bg-hover: #f0f0f0}@media (prefers-color-scheme: dark){:root{--bg: #0d0d0d;--grid: #f0f0f0;--text: #f0f0f0;--x-color: #ff6b6b;--o-color: #6fa2ff;--cell-bg: #0d0d0d;--cell-bg-hover: #1c1c1c}}*{box-sizing:border-box}html,body{margin:0;padding:0;width:100%;height:100%;background:var(--bg)}#app{width:100%;height:100%}.wrap{container-type:size;position:relative;width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:2cqmin;font-family:system-ui,sans-serif;color:var(--text)}.board-area{container-type:inline-size;width:min(100cqw,92cqh);display:flex;flex-direction:column;align-items:center;gap:2.5cqw}.status{display:flex;justify-content:space-between;align-items:baseline;width:100%;font-size:clamp(.55rem,6.5cqw,1.1rem);line-height:1.2}.opponent-text{opacity:.65}.toast{position:absolute;top:2cqmin;left:50%;transform:translate(-50%);background:var(--o-color);color:var(--bg);padding:.5em 1em;border-radius:999px;font-size:clamp(.5rem,5.5cqw,.9rem);white-space:nowrap;pointer-events:none;box-shadow:0 2px 8px #00000040;z-index:1}.board{display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);width:100%;aspect-ratio:1 / 1;background:var(--grid);gap:max(1px,.8cqw)}.cell{-webkit-appearance:none;-moz-appearance:none;appearance:none;background:var(--cell-bg);border:none;border-radius:0;margin:0;padding:0;font:inherit;display:flex;align-items:center;justify-content:center;cursor:pointer}.cell:hover:not(:disabled){background:var(--cell-bg-hover)}.cell:disabled{cursor:default}.cell:focus-visible{outline:max(2px,.8cqw) solid var(--o-color);outline-offset:-.8cqw}.cell.win{box-shadow:inset 0 0 0 max(2px,.8cqw) var(--x-color)}.mark{width:60%;height:60%;overflow:visible}.mark-x line{stroke:var(--x-color);stroke-width:10;stroke-linecap:round}.mark-o circle{fill:none;stroke:var(--o-color);stroke-width:10}