:root { color-scheme:dark; --ink:#f5f4ef; --muted:#aaa89f; --night:#0e100d; --panel:#191b16; --line:#3b3e33; --lime:#c9f45b; --amber:#f4bd61; --display:"Arial Black","Helvetica Neue",Arial,sans-serif; --body:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; }
*{box-sizing:border-box}html{min-width:280px;background:var(--night)}body{min-height:100vh;margin:0;color:var(--ink);background:radial-gradient(circle at 82% 5%,rgba(244,189,97,.12),transparent 30rem),var(--night);font-family:var(--body);line-height:1.5}a{color:inherit}button{color:inherit;font:inherit}
.site-header,main,footer{width:min(1040px,calc(100% - 40px));margin-inline:auto}.site-header{display:flex;align-items:center;justify-content:space-between;min-height:78px;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:11px;font-weight:850;text-decoration:none}.brand-mark{display:grid;width:34px;height:34px;place-items:center;color:var(--night);background:var(--lime);border-radius:9px;font-family:var(--display)}.site-header p{margin:0;color:var(--muted);font-size:.7rem;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.site-header p span,.eyebrow{color:var(--amber)}
.intro{display:grid;grid-template-columns:1fr minmax(260px,400px);gap:60px;align-items:end;padding:60px 0 38px}.intro>p{margin-bottom:3px;color:var(--muted)}.eyebrow{margin:0 0 10px;font-size:.72rem;font-weight:850;letter-spacing:.18em;text-transform:uppercase}h1,h2,p{margin-top:0}h1{margin-bottom:0;font-family:var(--display);font-size:clamp(3.4rem,8vw,6.4rem);line-height:.86;letter-spacing:-.07em}
.game-shell{max-width:650px;margin-inline:auto;padding:20px;background:var(--panel);border:1px solid var(--line);border-radius:17px}.scorebar{display:grid;grid-template-columns:1fr 2fr 1fr;gap:14px;align-items:center;margin-bottom:10px}.scorebar>div{display:grid}.scorebar__right{text-align:right}.scorebar span{color:var(--muted);font-size:.61rem;font-weight:850;letter-spacing:.13em;text-transform:uppercase}.scorebar strong{color:var(--lime);font:850 1.7rem/1 ui-monospace,SFMono-Regular,Menlo,monospace}.scorebar p{margin:0;color:var(--muted);font-size:.74rem;text-align:center}.game-meta{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;padding-top:10px;border-top:1px solid var(--line)}.game-meta p{margin:0;color:var(--muted);font-size:.72rem}.game-meta strong{color:var(--ink)}.game-meta button,.win-panel button{min-height:40px;padding:0 14px;background:transparent;border:1px solid #5b5d51;border-radius:8px;font-weight:800;cursor:pointer}.game-meta button:hover,.game-meta button:focus-visible,.win-panel button:hover,.win-panel button:focus-visible{color:var(--night);background:var(--lime);border-color:var(--lime)}
.board-wrap{position:relative;max-width:540px;margin:auto}.board{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;aspect-ratio:1;padding:10px;background:#080907;border:1px solid #46483e;border-radius:14px;touch-action:manipulation}.tile{display:grid;min-width:0;padding:0;place-items:center;color:#21180a;background:linear-gradient(145deg,#f6cd80,#d99f42);border:1px solid #ffd98f;border-radius:11px;box-shadow:inset 2px 2px 0 rgba(255,255,255,.25),inset -3px -3px 0 rgba(91,56,13,.18);font-family:var(--display);font-size:clamp(1.6rem,7vw,3rem);cursor:default}.tile--movable{cursor:pointer}.tile--movable:hover,.tile--movable:focus-visible{outline:3px solid var(--lime);outline-offset:-4px}.tile--empty{visibility:hidden}.win-panel{position:absolute;inset:10px;display:grid;place-content:center;justify-items:center;padding:20px;background:rgba(11,12,9,.92);border-radius:10px;text-align:center}.win-panel[hidden]{display:none}.win-panel span{color:var(--amber);font-size:.7rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}.win-panel strong{margin:6px 0 18px;font:clamp(2.4rem,10vw,4.8rem)/1 var(--display);letter-spacing:-.07em}
.rules{display:grid;grid-template-columns:1fr 1fr;gap:clamp(50px,9vw,110px);padding:90px 0}.rules h2{margin:0;font-family:var(--display);font-size:clamp(2rem,4vw,3.8rem);line-height:.98;letter-spacing:-.05em}.rules>p{margin:0;color:var(--muted)}footer{display:flex;justify-content:space-between;padding:28px 0 42px;color:var(--muted);border-top:1px solid var(--line);font-size:.8rem}footer a{color:var(--ink);font-weight:750;text-decoration:none}footer p{margin:0}
@media(max-width:680px){.site-header,main,footer{width:min(100% - 24px,600px)}.site-header{min-height:66px}.intro{grid-template-columns:1fr;gap:18px;padding:42px 0 30px}.game-shell{padding:12px;border-radius:12px}.rules{grid-template-columns:1fr;gap:22px;padding:72px 0 82px}}
@media(max-width:430px){.scorebar{grid-template-columns:1fr 1fr}.scorebar p{grid-column:1/-1;grid-row:2}.game-meta{align-items:flex-start;gap:8px}.game-meta p{max-width:60%}.board{gap:6px;padding:7px}.tile{border-radius:8px}footer{display:block}footer p{margin-top:6px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important}}