:root{--bg: #0e1116;--panel: #171c26;--panel-2: #212940;--text: #e8ecf4;--muted: #93a0b4;--accent: #38bdf8;--accent-ink: #06283a;--felt: #1d4a3a;--felt-line: #123227;--black-hi: #3a4258;--black-lo: #0b0f1a;--black-rim: rgba(166, 180, 202, .5);--white-hi: #ffffff;--white-lo: #c9d0dd;--white-rim: rgba(84, 95, 116, .6);--mark: #cdeedd;--warn: #fbbf24;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:640px;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;overflow:hidden}.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.is-turn{box-shadow:inset 0 0 0 1.5px #38bdf88c}.chip-who{display:inline-flex;flex:none;color:var(--muted)}.chip-who[hidden]{display:none}.icon{display:block;width:18px;height:18px;flex:none}.chip .icon{width:16px;height:16px}.btn .icon{width:20px;height:20px}.mini-disc{width:16px;height:16px;border-radius:50%;flex:none}.mini-disc.is-black{background:radial-gradient(circle at 35% 30%,var(--black-hi),var(--black-lo) 78%);box-shadow:inset 0 0 0 1.5px var(--black-rim)}.mini-disc.is-white{background:radial-gradient(circle at 35% 30%,var(--white-hi),var(--white-lo) 78%);box-shadow:inset 0 0 0 1.5px var(--white-rim)}.mini-disc.is-draw{box-shadow:inset 0 0 0 2px var(--muted)}.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)}.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 .mini-disc{width:18px;height:18px}.status.is-over{font-size:17px}.status.is-flash{color:var(--warn)}.board-wrap{flex:1;min-height:0;min-width:0;display:flex;align-items:center;justify-content:center}.board{position:relative;border-radius:calc(var(--cell, 48px) * .12);overflow:hidden;box-shadow:0 10px 26px #00000073,inset 0 0 0 1px #ffffff0f;touch-action:none}.squares{position:absolute;inset:0;z-index:1;display:grid;grid-template-columns:repeat(8,1fr)}.sq{position:relative;display:grid;place-items:center;padding:0;border:0;appearance:none;background:var(--felt);box-shadow:inset 0 0 0 1px var(--felt-line);font:inherit;color:inherit;touch-action:none;-webkit-tap-highlight-color:transparent}.sq.is-last{background-image:linear-gradient(#eef3fb29,#eef3fb29)}.sq:after{content:"";width:28%;height:28%;border-radius:50%;background:var(--mark);opacity:0;transform:scale(.5);transition:opacity .13s ease,transform .13s ease}.sq.is-target{cursor:pointer}.sq.is-target:after{opacity:.55;transform:scale(1)}.board.is-waiting .sq{cursor:progress}.board.is-over .sq{cursor:pointer}.discs{position:absolute;inset:0;z-index:2;pointer-events:none}.disc{position:absolute;left:0;top:0;width:var(--cell, 48px);height:var(--cell, 48px);display:grid;place-items:center;transform:translate(calc(var(--x, 0) * var(--cell, 48px)),calc(var(--y, 0) * var(--cell, 48px)));perspective:calc(var(--cell, 48px) * 6)}.disc-inner{width:82%;height:82%;position:relative;transform-style:preserve-3d;transition:transform .32s cubic-bezier(.4,.05,.3,1);animation:disc-in .2s ease-out}.disc-inner.is-white{transform:rotateY(180deg)}@keyframes disc-in{0%{scale:.3;opacity:0}}.face{position:absolute;inset:0;border-radius:50%;backface-visibility:hidden}.face-black{background:radial-gradient(circle at 34% 26%,#ffffff47,#fff0 55%),radial-gradient(circle at 50% 56%,var(--black-hi),var(--black-lo) 80%);box-shadow:0 calc(var(--cell, 48px) * .03) calc(var(--cell, 48px) * .07) #00000080,inset 0 0 0 max(1px,calc(var(--cell, 48px) * .03)) var(--black-rim)}.face-white{transform:rotateY(180deg);background:radial-gradient(circle at 34% 26%,#fff,#fff0 60%),radial-gradient(circle at 50% 56%,var(--white-hi),var(--white-lo) 80%);box-shadow:0 calc(var(--cell, 48px) * .03) calc(var(--cell, 48px) * .07) #00000080,inset 0 0 0 max(1px,calc(var(--cell, 48px) * .03)) var(--white-rim)}.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:330px){.game,.panel{gap:4px}.chip,.seg{min-height:30px}.status{min-height:16px;font-size:12px}.hint,#levels{display:none}}@media(max-width:380px)and (max-height:470px){.hint{display:none}.board-wrap{padding-block-end:52px}}@media(max-width:380px)and (max-height:430px){#modes{display:none}}@media(max-width:260px){.seg{padding-inline:3px;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}#modes,#levels:not([hidden]){display:flex}.hud{display:flex;flex-direction:column;align-items:stretch;gap:6px}.chips{justify-content:space-between}.chip{flex:1;justify-content:center;padding-inline:6px}.actions{justify-self:auto}#again-btn{flex:1}.board-wrap{padding-block-end:48px}.hint{display:none}}@media(prefers-reduced-motion:reduce){.disc-inner{transition-duration:1ms;animation-duration:1ms}.sq:after{transition-duration:1ms}}