/*! 2048 — styles.css © 2026 2bworks. All rights reserved. https://2bworks.games */
:root{--bg: #0a0a0a;--board-panel: #242424;--card: #000000;--outline: rgba(255, 255, 255, .92);--hole: rgba(255, 255, 255, .07);--op: #efbc4a;--player: #5cc8f7;--tile: #4ed35e;--accent: #ab8dfa;--bad: #ff5722;--light: #e3e3e3;--primary-text: #0a0a0a;--text: #ffffff;--muted: #9b9b9b;--tile-ink: #0a0a0a;--tile-ink-high: #f7f4ef;--t2: #eee4da;--t4: #ede0c8;--t8: #f2b179;--t16: #f59563;--t32: #f67c5f;--t64: #f65e3b;--t128: #edcf72;--t256: #edcc61;--t512: #edc850;--t1024: #edc53f;--t2048: #edc22e;--tbig: #3c3a32}body.light{--bg: #f1f1f4;--board-panel: #dededf;--card: #ffffff;--outline: rgba(0, 0, 0, .88);--hole: rgba(0, 0, 0, .1);--light: #14141a;--primary-text: #f4f4f6;--text: #101014;--muted: #5c5c66}*{box-sizing:border-box}html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,system-ui,sans-serif;-webkit-tap-highlight-color:transparent}.app{max-width:460px;height:100vh;height:100dvh;margin:0 auto;padding:max(10px,env(safe-area-inset-top)) 12px calc(12px + env(safe-area-inset-bottom));display:flex;flex-direction:column;gap:12px}.bar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.tools{display:flex;gap:6px;flex-wrap:wrap;justify-content:flex-end;margin-left:auto}[hidden]{display:none}select{background:var(--card);color:var(--text);border:2px solid var(--outline);border-radius:999px;padding:8px 14px;font-size:15px;font-weight:700}.clock{font-size:20px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text)}.goal,.score,.moves{font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;border-radius:999px;padding:2px 10px}.goal{color:var(--primary-text);background:var(--op)}.score{color:var(--primary-text);background:var(--player)}.moves{color:var(--text);border:1px solid var(--outline)}.viewport{position:relative;flex:1 1 auto;min-height:0;overflow:hidden;display:grid;place-items:center;border-radius:26px;background:var(--board-panel);touch-action:none;overscroll-behavior:contain}.stage{position:relative}.board{display:grid;grid-template-columns:repeat(var(--cols, 4),var(--cell));gap:var(--gap);padding:var(--gap);background:#00000047;border-radius:calc(var(--gap) * 2)}.hole{width:var(--cell);height:var(--cell);border-radius:calc(var(--gap) * 1.2);background:var(--hole)}.tiles{position:absolute;top:var(--gap);left:var(--gap);pointer-events:none}.tile{position:absolute;width:var(--cell);height:var(--cell);display:grid;place-items:center;border-radius:calc(var(--gap) * 1.2);font-weight:800;font-variant-numeric:tabular-nums;color:var(--tile-ink);background:var(--t2);transition:transform .11s ease-in-out;will-change:transform}.tile{font-size:calc(var(--cell) * .42)}.tile.wide3{font-size:calc(var(--cell) * .34)}.tile.wide4{font-size:calc(var(--cell) * .27)}.tile.v4{background:var(--t4)}.tile.v8{background:var(--t8)}.tile.v16{background:var(--t16)}.tile.v32{background:var(--t32)}.tile.v64{background:var(--t64)}.tile.v128{background:var(--t128)}.tile.v256{background:var(--t256)}.tile.v512{background:var(--t512)}.tile.v1024{background:var(--t1024)}.tile.v2048{background:var(--t2048)}.tile.vbig{background:var(--tbig);color:var(--tile-ink-high)}.tile.fresh{animation:appear .14s ease-out}.tile.merged{animation:pop .16s ease-out;z-index:2}@keyframes appear{0%{opacity:0}to{opacity:1}}@keyframes pop{0%{box-shadow:0 0 0 0 var(--tile)}55%{box-shadow:0 0 0 5px var(--tile)}to{box-shadow:0 0 0 0 var(--tile)}}.tile.goal{box-shadow:0 0 0 3px var(--op)}.stage.stuck .tile{filter:saturate(.35)}.stage.stuck .board{box-shadow:0 0 0 3px var(--bad)}.stage.shake{animation:shake .3s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.btn{background:var(--card);color:var(--text);border:2px solid var(--outline);border-radius:999px;padding:16px 20px;font-size:17px;font-weight:700;cursor:pointer}.btn.mini{padding:5px 9px;font-size:12px;border-width:1px}.btn:active{transform:scale(.97)}.btn.primary{background:var(--light);border-color:var(--light);color:var(--primary-text)}.btn.hidden{display:none}.overlay{position:fixed;inset:0;background:#000000b8;display:grid;place-items:center;padding:20px}.overlay.hidden{display:none}.panel{background:var(--card);border-radius:22px;border:2px solid var(--outline);padding:26px 22px;text-align:center;max-width:320px;width:100%}.panel h2{margin:0 0 8px;font-size:28px;font-weight:800}.panel p{margin:0 0 18px;color:var(--muted);font-size:15px;line-height:1.5}.panel .btn{width:100%}.panel .btn+.btn{margin-top:10px}