:root{--bg: #0e1116;--panel: #171c26;--panel-2: #212940;--board-bg: #12161f;--text: #e8ecf4;--muted: #93a0b4;--accent: #38bdf8;--accent-ink: #06283a;--x: #38bdf8;--o: #fbbf24;--line: #31405c;color-scheme:dark}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-tap-highlight-color:transparent;overflow:hidden}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.game{height:100%;max-width:600px;margin-inline:auto;padding:max(12px,env(safe-area-inset-top)) max(12px,env(safe-area-inset-right)) max(12px,env(safe-area-inset-bottom)) max(12px,env(safe-area-inset-left));display:flex;flex-direction:column;gap:10px;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.panel{display:flex;flex-direction:column;gap:8px}.hud{display:grid;grid-template-columns:1fr auto;align-items:center;gap:8px}.chips{grid-column:1;grid-row:1;display:flex;gap:6px;min-width:0}.chip{display:inline-flex;align-items:center;gap:6px;min-height:38px;padding-inline:10px;border-radius:10px;background:var(--panel);font-size:15px;font-weight:700;font-variant-numeric:tabular-nums}.chip-icon{display:inline-flex;flex:none}.chip-icon.is-you{color:var(--accent)}.chip-icon.is-cpu,#chip-d .icon{color:var(--muted)}.chip-icon.is-x{color:var(--x)}.chip-icon.is-o{color:var(--o)}.icon{display:block;width:18px;height:18px;flex:none}.chip .icon{width:17px;height:17px}.btn .icon{width:20px;height:20px}.actions{grid-column:2;grid-row:1;display:flex;gap:6px;justify-self:end}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding-inline:14px;border:0;border-radius:10px;background:var(--panel-2);color:var(--text);font:inherit;font-weight:600;cursor:pointer}.btn:active{transform:translateY(1px)}.btn-label{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn-primary{background:var(--accent);color:var(--accent-ink)}.btn-plain{padding-inline:0;background:var(--panel);color:var(--muted)}.switch{grid-column:1 / -1;display:flex;gap:6px}.switch[hidden]{display:none}#modes{grid-row:2}#levels{grid-row:3}.seg{flex:1;min-height:40px;padding-inline:6px;border:0;border-radius:10px;background:var(--panel);color:var(--muted);font:inherit;font-size:14px;font-weight:600;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.seg.is-on{background:var(--panel-2);color:var(--text);box-shadow:inset 0 0 0 1.5px #38bdf88c}.status{display:flex;align-items:center;justify-content:center;gap:8px;margin:0;min-height:24px;font-size:15px;font-weight:700}.status-icon{display:inline-flex;flex:none}.status-icon .icon{width:20px;height:20px}.status-icon.is-x{color:var(--x)}.status-icon.is-o{color:var(--o)}.status-icon.is-draw{color:var(--muted)}.status.is-over{font-size:17px}.board-wrap{flex:1;min-height:0;min-width:0;display:flex;align-items:center;justify-content:center}.board{position:relative;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,1fr);border-radius:20px;background:var(--board-bg);box-shadow:inset 0 0 0 1px #ffffff0a;touch-action:none}.cell{position:relative;display:flex;align-items:center;justify-content:center;padding:0;border:0;background:none;color:var(--text);font:inherit;cursor:pointer;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.cell:before{content:"";position:absolute;inset:7%;border-radius:14%;background:var(--text);opacity:0;transition:opacity .15s ease}.cell.is-taken{cursor:default}.cell:not(.is-taken):active:before{opacity:.09}@media(hover:hover){.cell:not(.is-taken):hover:before{opacity:.05}}.board.is-thinking .cell:not(.is-taken){cursor:progress}.board.is-won .cell,.board.is-won .cell.is-taken{cursor:pointer}.mark{width:58%;height:58%;overflow:visible}.mark .stroke{fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round}.mark-x{color:var(--x)}.mark-o{color:var(--o)}.mark-x .stroke{stroke-dasharray:15.3;animation:draw-x .19s ease-out backwards}.mark-x .stroke-2{animation-delay:.11s}.mark-o .stroke{stroke-dasharray:39;animation:draw-o .3s ease-out backwards}@keyframes draw-x{0%{stroke-dashoffset:15.3}to{stroke-dashoffset:0}}@keyframes draw-o{0%{stroke-dashoffset:39}to{stroke-dashoffset:0}}.mark.is-ghost{opacity:0;transition:opacity .14s ease}.mark.is-ghost .stroke{stroke-dasharray:none;animation:none}@media(hover:hover){.cell:hover .mark.is-ghost{opacity:.22}}.cell.is-win .mark{filter:drop-shadow(0 0 7px currentColor)}.board.is-won .cell:not(.is-win) .mark{opacity:.4;transition:opacity .3s ease}.lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;overflow:visible}.grid line{stroke:var(--line);stroke-width:.05;stroke-linecap:round}.win-line{stroke:var(--x);stroke-width:.09;stroke-linecap:round;stroke-dasharray:var(--len, 3);stroke-dashoffset:var(--len, 3);opacity:0}.win-line.is-o{stroke:var(--o)}.board.is-won .win-line{opacity:1;animation:draw-win .32s ease-out .14s forwards}@keyframes draw-win{to{stroke-dashoffset:0}}.hint{margin:0;text-align:center;color:var(--muted);font-size:13px;line-height:1.45}@media(max-width:470px){.btn-label{display:none}#again-btn{padding-inline:0}.game{padding-left:max(8px,env(safe-area-inset-left));padding-right:max(8px,env(safe-area-inset-right))}}@media(max-height:470px){.game{padding:max(8px,env(safe-area-inset-top)) max(8px,env(safe-area-inset-right)) max(8px,env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));gap:6px}.panel{gap:6px}.chip{min-height:32px;padding-inline:8px;font-size:14px}.seg{min-height:32px;font-size:13px}.status{min-height:20px;font-size:14px}.status.is-over{font-size:15px}.hint{font-size:12px}}@media(max-height:470px)and (min-aspect-ratio:13 / 10){.game{flex-direction:row;align-items:stretch;gap:10px;max-width:none}.panel{flex:0 0 auto;width:min(42vw,240px);justify-content:center;min-height:0;overflow-y:auto}.hud{display:flex;flex-direction:column;align-items:stretch;gap:6px}.chips{flex-direction:column}.chip{justify-content:space-between}.actions{justify-self:auto}#again-btn{flex:1}.hint{display:none}}@media(prefers-reduced-motion:reduce){.mark .stroke,.board.is-won .win-line{animation-duration:1ms;animation-delay:0ms}}