:root{
  --a:#64f4ff;--b:#a66bff;--text:#f3fbff;--muted:#a8bad0;
  --panel:#ffffff14;--inner:#ffffff0d;--card:#ffffff0b;--border:#ffffff2a;
  --input:#03101fcc;--secondary:#ffffff16;--grid:#ffffff0b;
  --light:#dffaffcc;--dark:#2c6a82cc;
  --red1:#ff4b72;--red2:#7d0925;--blue1:#f7ffff;--blue2:#37d5ff;
  --select:#9ffcff;--hint:#58ffc855;--danger:#ff4b7a66;
  --glowA:#00d9ff55;--glowB:#9c5cff55;--orbA:#00d9ff;--orbB:#934cff;
}
body.theme-neon{--a:#ff4df3;--b:#00ffe1;--light:#ffe7fb;--dark:#6f25e8;--red1:#ff3cac;--red2:#5a063b;--blue1:#ecffff;--blue2:#00ffe1;--panel:#1b092ccc;--inner:#2b0d3f88;--card:#240934aa;--border:#ff75e333;--muted:#d7a9e8;--glowA:#ff00aa55;--glowB:#00ffe155;--orbA:#ff00aa;--orbB:#00ffe1;--grid:#ffb7f70b}
body.theme-ember{--a:#ff9f43;--b:#ff3057;--light:#ffe3ba;--dark:#9a2a2a;--red1:#ff3057;--red2:#641121;--blue1:#fff8e8;--blue2:#ffb84c;--panel:#25100ddd;--inner:#3b160f88;--card:#2a110dcc;--border:#ffb84c28;--muted:#e5b999;--glowA:#ff305755;--glowB:#ff9f4355;--orbA:#ff3057;--orbB:#ff9f43;--grid:#ffb84c0b}
body.theme-classic{--a:#f0c36a;--b:#b9823a;--light:#f0d9b5;--dark:#b58863;--red1:#2b1a10;--red2:#120905;--blue1:#fff6e5;--blue2:#e1b86d;--panel:#2b2018dd;--inner:#3b2b2088;--card:#2b2018cc;--border:#f0c36a26;--muted:#d2bfa5;--glowA:#f0c36a44;--glowB:#b9823a44;--orbA:#f0c36a;--orbB:#b9823a;--grid:#f0c36a0a}
*{box-sizing:border-box}html,body{min-height:100%;width:100%;margin:0;overflow-x:hidden;-webkit-text-size-adjust:100%}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:#020612;color:var(--text);transition:.35s;touch-action:manipulation}body:before{content:"";position:fixed;inset:0;background:radial-gradient(circle at 20% 10%,var(--glowA),transparent 34%),radial-gradient(circle at 85% 30%,var(--glowB),transparent 34%),linear-gradient(135deg,#02040a,#07111f 55%,#03040a);z-index:-4}.bg{position:fixed;inset:0;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:42px 42px;mask-image:linear-gradient(to bottom,#000,transparent 85%);z-index:-3}.app{min-height:100vh;width:100%;max-width:none;margin:0;display:grid;grid-template-columns:390px minmax(0,1fr);gap:26px;padding:26px}.hero{grid-column:1/-1;display:flex;gap:14px;align-items:center;margin:0}.logo-mark{display:grid;place-items:center;width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,var(--a),var(--b));color:#06101a;font-size:28px;font-weight:900;box-shadow:0 0 28px color-mix(in srgb,var(--a) 45%,transparent);flex:0 0 auto}h1{margin:0;font-size:30px;letter-spacing:-.04em;text-shadow:0 0 22px color-mix(in srgb,var(--a) 38%,transparent)}h2{font-size:17px;margin:0 0 12px}p{margin:6px 0;color:var(--muted)}.panel,.card{background:var(--panel);border:1px solid var(--border);box-shadow:0 20px 60px #0008,inset 0 1px 0 #fff2;backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);border-radius:26px}.grid{display:grid;grid-template-columns:1fr;gap:14px;padding:18px;height:max-content}.card{background:var(--card);padding:16px;min-width:0}.game-layout{display:grid;grid-template-columns:270px minmax(0,1fr);gap:20px;min-width:0}.game-layout>.panel{padding:18px;min-width:0}.board-wrap{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;overflow:hidden}.status{display:flex;justify-content:space-between;gap:12px;align-items:center;width:min(86vw,660px);margin-bottom:18px;padding:15px 18px;border-radius:22px;background:var(--panel);border:1px solid var(--border);box-shadow:inset 0 1px 0 #fff2;color:var(--muted);font-weight:800;overflow-wrap:anywhere}.status strong{color:var(--text)}button,input,select{border:0;border-radius:16px;padding:13px 15px;font-size:15px}button{width:100%;background:linear-gradient(135deg,var(--a),var(--b));color:#041018;font-weight:900;cursor:pointer;box-shadow:0 10px 28px color-mix(in srgb,var(--a) 32%,transparent);transition:.15s transform,.15s filter}button:hover{filter:brightness(1.12);transform:translateY(-1px)}button.ghost{background:var(--secondary);color:var(--text);box-shadow:inset 0 1px 0 #fff2,0 10px 24px #0004}input,select{width:100%;background:var(--input);color:var(--text);border:1px solid var(--border);outline:none;box-shadow:inset 0 1px 0 #fff1;margin:7px 0}input:focus,select:focus{border-color:var(--a);box-shadow:0 0 0 4px color-mix(in srgb,var(--a) 20%,transparent)}.toggle{display:flex;align-items:center;gap:10px;color:var(--muted);margin-top:8px}.toggle input{width:auto}.list{display:grid;gap:10px;max-height:520px;overflow:auto}.game-item{border:1px solid var(--border);background:var(--card);border-radius:18px;padding:12px;display:grid;gap:7px;box-shadow:inset 0 1px 0 #fff1;cursor:pointer;word-break:break-word}.game-item b{display:block;color:var(--text)}.game-item span{display:block;color:var(--muted);font-size:14px}.board{width:min(86vw,660px);height:min(86vw,660px);display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);gap:0;padding:0;border:1px solid var(--border);border-radius:28px;overflow:hidden;background:transparent;box-shadow:0 30px 80px #000a,0 0 70px color-mix(in srgb,var(--a) 18%,transparent),inset 0 1px 0 #fff2;line-height:0}.sq{display:flex;align-items:center;justify-content:center;position:relative;min-width:0;min-height:0;width:100%;height:100%;padding:0;margin:0;border:0;line-height:1;user-select:none;cursor:pointer;overflow:hidden;transition:.12s filter}.sq:hover{filter:brightness(1.12)}.sq.light{background:var(--light)!important}.sq.dark{background:var(--dark)!important}.sq:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 28% 20%,rgba(255,255,255,.18),transparent 38%),linear-gradient(135deg,rgba(255,255,255,.08),transparent 54%);pointer-events:none;z-index:0}.sq.light:after{content:"";position:absolute;inset:0;border:1px solid rgba(255,255,255,.18);pointer-events:none}.sq.dark:after{content:"";position:absolute;inset:0;border:1px solid rgba(0,0,0,.10);pointer-events:none}.sq.sel{outline:5px solid var(--select);outline-offset:-6px;box-shadow:inset 0 0 24px var(--select)!important}.sq.hint:not(.sel){box-shadow:inset 0 0 0 999px var(--hint)!important}.sq.hint:not(.sel)::before{background:radial-gradient(circle,rgba(255,255,255,.95) 0 13%,rgba(88,255,200,.72) 14% 31%,transparent 32%),radial-gradient(circle at 28% 20%,rgba(255,255,255,.18),transparent 38%)}.piece{position:relative;z-index:2;width:68%;height:68%;display:block;border-radius:50%;border:2px solid rgba(255,255,255,.65);box-shadow:inset 0 8px 15px rgba(255,255,255,.38),inset 0 -12px 18px rgba(0,0,0,.42),0 9px 20px rgba(0,0,0,.45);transition:transform .16s ease,filter .16s ease;flex:0 0 auto}.piece::before{content:"";position:absolute;inset:12%;border-radius:50%;border:2px solid rgba(255,255,255,.24);box-shadow:inset 0 0 12px rgba(255,255,255,.18)}.sq:hover .piece{transform:scale(1.055);filter:brightness(1.08)}.piece.w{background:radial-gradient(circle at 30% 18%,#fff 0 10%,transparent 11%),linear-gradient(145deg,var(--blue1),var(--blue2) 48%,#087aa7)!important;box-shadow:inset 0 8px 15px rgba(255,255,255,.52),inset 0 -12px 18px rgba(0,67,98,.46),0 9px 20px rgba(0,0,0,.45),0 0 20px color-mix(in srgb,var(--blue2) 45%,transparent)!important}.piece.b{background:radial-gradient(circle at 30% 18%,rgba(255,255,255,.35) 0 10%,transparent 11%),linear-gradient(145deg,var(--red1),#b40e38 48%,var(--red2))!important;box-shadow:inset 0 8px 15px rgba(255,255,255,.30),inset 0 -12px 18px rgba(0,0,0,.44),0 9px 20px rgba(0,0,0,.45),0 0 20px color-mix(in srgb,var(--red1) 38%,transparent)!important}.piece.king{border-color:rgba(255,225,93,.88)!important}.piece.king:after{content:"♛";position:absolute;inset:0;display:grid;place-items:center;font-size:clamp(18px,4vw,34px);color:#fff6bd;text-shadow:0 0 8px rgba(255,240,140,.95),0 0 18px rgba(255,184,0,.75)}.actions{display:flex;gap:10px;width:min(86vw,660px);margin-top:12px}.history{width:min(86vw,660px);max-height:130px;overflow:auto;color:var(--muted);padding-left:22px}.hidden{display:none!important}@media(max-width:1100px){.app{grid-template-columns:1fr}.grid{grid-template-columns:repeat(3,minmax(0,1fr));order:2}.game-layout{grid-template-columns:1fr;order:1}.game-layout aside{order:2}.board-wrap{order:1}.board,.status,.actions,.history{width:min(94vw,660px);height:auto}.board{height:min(94vw,660px)}}@media(max-width:760px){.app{padding:10px;gap:12px}.hero{gap:10px}.logo-mark{width:48px;height:48px;border-radius:15px}h1{font-size:24px}.hero p{font-size:13px}.grid{grid-template-columns:1fr;gap:10px;padding:10px}.game-layout{gap:10px}.game-layout>.panel,.card{padding:12px;border-radius:20px}.status{position:sticky;top:8px;z-index:5;flex-direction:column;align-items:flex-start;margin-bottom:10px;padding:11px 13px;border-radius:18px;font-size:13px;width:calc(100vw - 20px)}.board{width:calc(100vw - 20px);height:calc(100vw - 20px);border-radius:18px}.actions{width:calc(100vw - 20px);display:grid;grid-template-columns:1fr 1fr;gap:8px}.history{width:calc(100vw - 20px);max-height:92px;font-size:13px}.list{max-height:240px}.piece{width:66%;height:66%;border-width:2px}button,input,select{padding:12px;border-radius:14px;font-size:14px}}@media(max-width:420px){.app{padding:6px}.board,.status,.actions,.history{width:calc(100vw - 12px)}.board{height:calc(100vw - 12px);border-radius:14px}.actions{grid-template-columns:1fr}.logo-mark{width:42px;height:42px}h1{font-size:21px}.hero p{display:none}.piece{width:64%;height:64%;border-width:1px}.piece::before{inset:15%;border-width:1px}.piece.king:after{font-size:20px}}