:root{--bg: #0e1116;--panel: #171c26;--panel-2: #212940;--text: #e8ecf4;--muted: #93a0b4;--accent: #34d399;--accent-ink: #04241a;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}.game{height:100%;max-width:720px;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:12px;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none}.hud{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}.chips,.actions{display:flex;align-items:center;gap:8px}.actions{flex:none}.chips{min-width:0;overflow:hidden}.chip{display:flex;align-items:center;gap:6px;min-height:40px;padding:8px 12px;border-radius:10px;background:var(--panel);font-size:14px;white-space:nowrap}.chip-label{color:var(--muted);font-size:12px;letter-spacing:.04em;text-transform:uppercase}.chip-value{font-weight:700;font-variant-numeric:tabular-nums;direction:ltr;unicode-bidi:isolate}.icon{width:18px;height:18px;flex:none;color:var(--muted)}#moves-chip .icon{color:#3ec9f5}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:44px;padding:0 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[disabled]{opacity:.4;cursor:default}.btn[disabled]:active{transform:none}.btn-icon .icon{color:inherit}#undo-btn{padding:0 12px}.btn-primary{background:var(--accent);color:var(--accent-ink);padding:0 26px;font-size:16px}.board-wrap{position:relative;flex:1;min-height:0;min-width:0;display:flex;align-items:center;justify-content:center;touch-action:none}.board{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:calc(var(--tw, 40px) * .3)}.row{display:flex;justify-content:center;gap:calc(var(--tw, 40px) * .34);padding-block-start:calc(var(--tw, 40px) * .55)}.tube{position:relative;width:var(--tw, 40px);height:calc(var(--tw, 40px) * 3);padding:0;border:0;background:transparent;cursor:pointer;-webkit-tap-highlight-color:transparent;touch-action:manipulation;transition:transform .17s ease-out}.tube:before{content:"";position:absolute;inset:0 calc(var(--tw, 40px) * -.17)}.tube.is-selected{transform:translateY(calc(var(--tw, 40px) * -.42))}.tube.is-denied{animation:deny .22s ease-in-out}@keyframes deny{25%{transform:translate(calc(var(--tw, 40px) * -.1))}75%{transform:translate(calc(var(--tw, 40px) * .1))}}.glass{position:absolute;inset:0;display:flex;flex-direction:column-reverse;padding:calc(var(--tw, 40px) * .09);padding-block-start:calc(var(--tw, 40px) * .12);border-radius:calc(var(--tw, 40px) * .2) calc(var(--tw, 40px) * .2) calc(var(--tw, 40px) * .5) calc(var(--tw, 40px) * .5);background:#ffffff0e;box-shadow:inset 0 0 0 calc(var(--tw, 40px) * .045) #ffffff24,0 calc(var(--tw, 40px) * .08) calc(var(--tw, 40px) * .2) #0000004d;overflow:hidden}.glass:after{content:"";position:absolute;inset-block:8% 12%;inset-inline-start:13%;width:11%;border-radius:999px;background:linear-gradient(180deg,#ffffff4d,#fff0);pointer-events:none}.unit{flex:1 1 0;min-height:0;transform-origin:bottom;transition:transform .18s ease}.unit:first-child{border-radius:0 0 calc(var(--tw, 40px) * .4) calc(var(--tw, 40px) * .4)}.unit.is-empty{transform:scaleY(0)}.tube.is-complete .glass{box-shadow:inset 0 0 0 calc(var(--tw, 40px) * .045) #34d3998c,0 0 calc(var(--tw, 40px) * .35) #34d39940}.board.is-solved 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12px}}@media(max-height:430px){.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:8px}.chip{min-height:34px;padding:6px 9px;gap:4px}.btn{min-height:40px}.hint{display:none}}@media(max-width:380px)and (max-height:470px){.board-wrap{padding-block-end:52px}.hint{display:none}.hud{flex-wrap:nowrap}}@media(max-width:250px){#moves-chip{display:none}}@media(max-height:430px)and (min-aspect-ratio:13 / 10){.game{flex-direction:row;align-items:stretch;max-width:none}.hud{flex-direction:column;flex-wrap:nowrap;justify-content:center;align-items:stretch;flex:0 0 auto}.chips,.actions{flex-direction:column;align-items:stretch}.chip{justify-content:space-between}}@media(prefers-reduced-motion:reduce){.tube,.unit,.overlay{transition-duration:1ms;animation-duration:1ms}}