:root{color-scheme:dark;font-family:system-ui,sans-serif;color:#eef5f3;background:#101d26;--accent:#bceda5}*{box-sizing:border-box}body{margin:0}main{max-width:650px;margin:auto;padding:16px 22px 24px}header{display:flex;align-items:center;justify-content:space-between;gap:12px}h1{font-size:24px;letter-spacing:-.03em}a{color:inherit;text-underline-offset:4px}header a{font-size:13px}button{font:inherit;min-height:44px;padding:10px 15px;color:inherit;background:#243842;border:1px solid #49606a;border-radius:10px;cursor:pointer;touch-action:manipulation}button:hover{background:#344d58}button:disabled{opacity:.45;cursor:default}button:focus-visible,a:focus-visible,canvas:focus-visible{outline:3px solid #ffd56b;outline-offset:3px}.primary{background:var(--accent);border-color:var(--accent);color:#182824;font-weight:650}.primary:hover{background:#d3f8c3}.quiet{font-size:13px}.hud{display:flex;justify-content:space-between;gap:12px;padding:8px 0 14px}.hud span{font-size:12px;color:#a7c0ca}.hud b{display:block;font-size:21px;color:#eef5f3;font-variant-numeric:tabular-nums}#playfield{position:relative;width:min(100%,300px);margin:auto}#board{display:block;width:100%;height:auto;border:1px solid #577986;border-radius:9px;touch-action:none;box-shadow:0 14px 48px #02090d80}#intro{position:absolute;inset:0;background:#101d26ed;padding:24px 22px;display:flex;flex-direction:column;justify-content:center;gap:14px;border-radius:9px}#intro[hidden]{display:none}h2{font-size:35px;line-height:1.08;letter-spacing:-.035em;margin:0 0 8px}#intro p{line-height:1.55;margin:0;color:#bad0d4}small{font-size:11px;line-height:1.5;color:#aac2c8}.controls{display:flex;justify-content:center;gap:7px;margin:14px 0}.controls button{min-width:48px}.controls [data-action=drop]{font-size:14px}.bottom{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:8px}.bottom button{font-size:13px}.bottom span{font-size:12px;margin-left:8px;color:#b4cbd2}#status{font-size:13px;color:#bbd2d8;text-align:center;line-height:1.5;min-height:20px}details{font-size:12px;line-height:1.6;color:#a1bac4;margin-top:18px}summary{cursor:pointer}#xrCanvas{display:none;position:fixed!important;inset:0;z-index:-1;width:100vw;height:100vh}body.ar{background:transparent}body.ar #xrCanvas{display:block}body.ar main{height:100dvh;max-width:none;padding-bottom:max(12px,env(safe-area-inset-bottom));display:flex;flex-direction:column;pointer-events:none}body.ar header,body.ar .hud,body.ar button,body.ar a,body.ar details{pointer-events:auto}body.ar header,body.ar .hud{background:#101d26df;padding:8px 14px;border-radius:10px}body.ar h1{margin:0}body.ar #playfield{display:none}body.ar .controls{margin-top:auto}body.ar .bottom,body.ar #status{background:#101d26e8;padding:8px;border-radius:10px}body.ar details{display:none}#placement{position:absolute;left:50%;top:43%;transform:translate(-50%,-50%);width:min(90vw,370px);background:#101d26eb;padding:20px;border-radius:12px;pointer-events:auto;text-align:center}#placement[hidden]{display:none}#placement p{line-height:1.5}::selection{background:#bceda5;color:#101d26}@media(max-width:600px){main{padding:10px 14px}h1{font-size:21px}header{gap:7px}header a{font-size:11px}.hud{padding-top:3px}.hud b{font-size:18px}#playfield{width:min(calc((100dvh - 260px)/2),100%,270px)}#intro{padding:16px;gap:12px}h2{font-size:28px}#intro p{font-size:13px}#intro button{font-size:13px;padding:10px 7px}#intro small{font-size:10px}.controls{margin:10px 0;gap:5px}.controls button{padding:9px 11px;min-width:44px}#status{font-size:11px}.bottom button{padding:9px 12px}details{margin-top:8px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
/* Keep the tracked scene behind the controls and above the page background. */
body.ar #xrCanvas{z-index:0;pointer-events:none}
body.ar main{position:relative;z-index:1}