:root{--bg:#FAF7F2;--card:#ffffff;--ink:#2b2622;--muted:#8a7f74;--acc:#8B5A2B;--light:#F0D9B5;--dark:#B58863;--line:#eadfd2}
.dark{--bg:#1b1714;--card:#26201b;--ink:#efe6dc;--muted:#a3968a;--acc:#d39a5c;--light:#cdb08a;--dark:#8a6443;--line:#3a3029}
body{font-family:Vazirmatn,sans-serif;background:var(--bg);color:var(--ink);transition:background .3s}
.bgpat{background-image:radial-gradient(circle at 20% 10%,rgba(139,90,43,.08),transparent 40%),radial-gradient(circle at 90% 80%,rgba(139,90,43,.07),transparent 40%);min-height:100vh}
.card{background:var(--card);border:1px solid var(--line);border-radius:1rem;box-shadow:0 4px 20px rgba(60,40,20,.06)}
.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;border-radius:14px;overflow:hidden;box-shadow:0 12px 40px rgba(60,40,20,.25);border:6px solid var(--acc);direction:ltr;user-select:none}
.sq{position:relative;display:flex;align-items:center;justify-content:center;cursor:pointer}
.sq.l{background:var(--light)}.sq.d{background:var(--dark)}
.sq.last::before{content:"";position:absolute;inset:0;background:rgba(155,199,0,.38)}
.sq.sel::before{content:"";position:absolute;inset:0;background:rgba(255,215,0,.55)}
.sq.chk::before{content:"";position:absolute;inset:0;background:radial-gradient(circle,rgba(255,0,0,.85),rgba(255,0,0,0) 70%)}
.sq.hint::after{content:"";position:absolute;inset:3px;border:3px dashed #2a7de1;border-radius:6px}
.dot{position:absolute;width:28%;height:28%;border-radius:50%;background:rgba(0,0,0,.22);z-index:2}
.ring{position:absolute;inset:4%;border-radius:50%;border:5px solid rgba(0,0,0,.22);z-index:2}
.pc{position:relative;z-index:3;font-size:min(9vw,52px);line-height:1;transition:transform .15s}
.pc:hover{transform:scale(1.08)}
.pc.w{color:#fff;text-shadow:0 0 2px #000,0 0 1px #000,0 2px 3px rgba(0,0,0,.5)}
.pc.b{color:#1d1916;text-shadow:0 1px 0 rgba(255,255,255,.35),0 2px 3px rgba(0,0,0,.4)}
.pc.pop{animation:pop .25s ease}
@keyframes pop{from{transform:scale(.6);opacity:.4}to{transform:scale(1);opacity:1}}
.coord{position:absolute;font-size:10px;font-weight:700;opacity:.7;z-index:1}
.btn{border-radius:.75rem;padding:.55rem .8rem;font-weight:600;border:1px solid var(--line);background:var(--card);transition:all .15s}
.btn:hover{border-color:var(--acc);color:var(--acc)}
.btn.on{background:var(--acc);color:#fff;border-color:var(--acc)}
.fade{animation:fade .5s ease both}
@keyframes fade{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.conf{position:fixed;top:-20px;width:10px;height:14px;z-index:60;animation:fall linear forwards}
@keyframes fall{to{transform:translateY(110vh) rotate(720deg)}}
.think{animation:bob 1s ease-in-out infinite}
@keyframes bob{50%{transform:translateY(-4px)}}