@layer base{body{min-height:100vh;margin:0;background:#111313;color:#f7f3ea;font-family:var(--font-sans)}button,select{font:inherit}}@layer components{.chess-shell{min-height:100vh;background:linear-gradient(135deg,rgba(177,71,55,.18),transparent 34%),linear-gradient(225deg,rgba(36,112,109,.2),transparent 38%),#111313;padding:clamp(18px,3vw,38px)}.chess-topbar{margin-bottom:34px}.chess-hero{display:grid;grid-template-columns:minmax(320px,780px) minmax(300px,420px);gap:24px;align-items:end;max-width:1180px;margin:0 auto 24px}.chess-back{display:inline-flex;gap:10px;align-items:center;width:fit-content;min-height:38px;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#12141494;padding:0 12px 0 10px;color:#bdb7aa;text-decoration:none;font-size:13px;font-weight:700;margin-bottom:34px;transition:border-color .16s ease,color .16s ease,background .16s ease}.chess-back:hover,.chess-back:focus-visible{border-color:#caa15fb8;background:#ffffff14;color:#f7f3ea;outline:0}.chess-back svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2.3;stroke-linecap:round;stroke-linejoin:round}.chess-kicker,.eyebrow{margin:0 0 10px;color:#caa15f;font-size:12px;letter-spacing:.16em;text-transform:uppercase}.chess-hero h1{margin:0;font-size:clamp(42px,6.4vw,82px);line-height:1.04;letter-spacing:0;white-space:nowrap}.chess-copy{max-width:640px;margin:18px 0 0;color:#cfc8ba;font-size:clamp(16px,2vw,20px);line-height:1.6}.chess-stats{grid-column:2;display:grid;grid-template-columns:repeat(3,minmax(100px,1fr));gap:1px;width:100%;overflow:hidden;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#ffffff14}.chess-stats div{min-width:0;background:#141716d1;padding:16px}.chess-stats span,.field span{display:block;color:#918b80;font-size:12px;text-transform:uppercase;letter-spacing:.12em}.chess-stats strong{display:block;margin-top:8px;color:#f7f3ea;font-size:18px}.chess-workspace{display:grid;grid-template-columns:minmax(320px,780px) minmax(300px,420px);gap:24px;align-items:start;max-width:1180px;margin:0 auto}.board-panel,.control-panel{border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#121414c7;box-shadow:0 24px 70px #00000042}.board-panel{padding:clamp(14px,2vw,24px)}.board-header{display:flex;align-items:start;justify-content:space-between;gap:16px;margin-bottom:14px}.board-header h2,.section-title h2{margin:0;font-size:24px;letter-spacing:0}.section-title.compact h2{font-size:18px}.status-pill{flex:0 0 auto;border:1px solid rgba(202,161,95,.42);border-radius:999px;padding:12px 16px;color:#f3d7a5;font-size:17px;font-weight:800;line-height:1}.status-pill.is-error{border-color:#e7675394;color:#ffb3a4}.board-wrap{display:grid;grid-template-columns:22px minmax(0,1fr);grid-template-rows:minmax(0,1fr) 22px;gap:8px;align-items:stretch}.rank-files{display:grid;grid-template-rows:repeat(8,1fr);color:#8f887c;font-size:13px;line-height:1;text-align:center}.rank-files span,.file-labels span{display:flex;align-items:center;justify-content:center}.file-labels{grid-column:2;display:grid;grid-template-columns:repeat(8,1fr);color:#8f887c;font-size:13px;line-height:1}.chess-board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));aspect-ratio:1;overflow:hidden;border:1px solid rgba(255,255,255,.16);border-radius:8px;background:#1e201d}.square{position:relative;display:grid;place-items:center;width:100%;min-width:0;aspect-ratio:1;border:0;color:#171716;cursor:pointer}.piece{position:relative;z-index:1;display:block;width:82%;aspect-ratio:1;pointer-events:none;filter:drop-shadow(0 5px 8px rgba(0,0,0,.24))}.piece img{display:block;width:100%;height:100%;object-fit:contain;-webkit-user-select:none;user-select:none}.piece--captured{width:28px;flex:0 0 28px;opacity:.92;filter:drop-shadow(0 2px 3px rgba(0,0,0,.2))}.piece--captured.piece--black img{filter:drop-shadow(0 0 1px rgba(255,255,255,.96)) drop-shadow(0 0 2px rgba(255,255,255,.72))}.square.is-light{background:#e3d6bd}.square.is-dark{background:#6f8d86}.square.is-selected{outline:4px solid #d79d47;outline-offset:-4px}.square.is-target:after{content:"";position:absolute;width:24%;aspect-ratio:1;border-radius:999px;background:#14141257}.square.is-last-move:before{content:"";position:absolute;inset:8%;border:2px solid rgba(234,196,108,.7);border-radius:6px}.captured-row{display:flex;align-items:center;min-height:30px;gap:4px}.captured-row--top{margin-bottom:8px}.captured-empty{color:#6f6a61;font-size:14px}.control-panel{display:grid;gap:1px;overflow:hidden;background:#ffffff14}.panel-section{background:#121414db;padding:20px}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;margin-top:18px;border:1px solid rgba(255,255,255,.12);border-radius:8px;padding:4px;background:#ffffff0d}.field{margin-top:18px}.field select{width:100%;min-height:42px;margin-top:8px;border:1px solid rgba(255,255,255,.12);border-radius:6px;background:#101211;color:#f7f3ea;padding:0 12px;cursor:pointer}.field select:disabled{cursor:wait;opacity:.68}.segmented button,.primary-button{min-height:42px;border-radius:6px;border:1px solid transparent}.segmented button{background:transparent;color:#cfc8ba}.segmented button.is-active{background:#efe6d3;color:#141414}.button-row{margin-top:18px}.primary-button{width:100%;background:#caa15f;color:#151412}.move-list{display:grid;gap:8px;max-height:280px;overflow:auto;margin:16px 0 0;padding:0;list-style:none}.move-list li{display:grid;grid-template-columns:36px 1fr 1fr;gap:8px;align-items:center;min-height:34px;border-bottom:1px solid rgba(255,255,255,.08);color:#bfb7aa;font-size:14px}.move-list strong{color:#f7f3ea;font-weight:500}.move-list .empty-moves{grid-template-columns:1fr;color:#8f887c}.fen-box{display:block;overflow-wrap:anywhere;margin-top:14px;border:1px solid rgba(255,255,255,.12);border-radius:6px;background:#101211;padding:12px;color:#cfc8ba;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;line-height:1.5}.engine-console{display:grid;gap:10px;max-height:340px;overflow:auto;margin-top:14px;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:linear-gradient(180deg,rgba(202,161,95,.06),transparent 28%),#0b0d0d;padding:12px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.engine-console p{margin:0;color:#8f887c;font-size:12px;line-height:1.5}.console-entry{border-left:3px solid #6f8d86;background:#ffffff0a;padding:0}.console-entry--in{border-left-color:#caa15f}.console-entry summary{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px;align-items:center;padding:10px;cursor:pointer;list-style:none}.console-entry summary::-webkit-details-marker{display:none}.console-entry summary:after{content:"+";grid-column:2;grid-row:1 / span 3;align-self:center;color:#918b80;font-size:12px}.console-entry summary span,.console-entry summary strong,.console-entry summary code{grid-column:1}.console-entry[open] summary:after{content:"-"}.console-entry span{color:#918b80;font-size:11px}.console-entry strong{color:#f7f3ea;font-size:12px;text-transform:uppercase;letter-spacing:.08em}.console-entry code{overflow-wrap:anywhere;color:#f3d7a5;font-size:12px}.console-entry pre{overflow:visible;max-height:none;margin:0;border-top:1px solid rgba(255,255,255,.08);padding:10px;color:#cfc8ba;font-size:11px;line-height:1.45;white-space:pre-wrap}.checkmate-screen{position:fixed;right:clamp(14px,3vw,34px);bottom:clamp(14px,3vw,34px);z-index:30;width:min(420px,calc(100vw - 28px));pointer-events:none}.checkmate-screen__panel{width:100%;border:1px solid rgba(202,161,95,.42);border-radius:8px;background:linear-gradient(135deg,rgba(177,71,55,.2),transparent 42%),#171a19f5;padding:clamp(18px,4vw,28px);pointer-events:auto;box-shadow:0 22px 68px #0000006b}.checkmate-screen__panel span{color:#caa15f;font-size:12px;letter-spacing:.16em;text-transform:uppercase}.checkmate-screen__panel h2{margin:12px 0 0;font-size:clamp(26px,4vw,38px);line-height:1.05;letter-spacing:0}.checkmate-screen__panel p{margin:14px 0 0;color:#cfc8ba;line-height:1.55}.checkmate-screen__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.checkmate-screen__actions .primary-button,.checkmate-screen__actions .ghost-button{flex:1 1 150px;cursor:pointer}.promotion-choice{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:18px;background:#0b0d0dad;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px)}.promotion-choice__panel{width:min(420px,100%);border:1px solid rgba(255,255,255,.14);border-radius:8px;background:#171a19;padding:18px;box-shadow:0 24px 80px #0000006b}.promotion-choice__panel>span{display:block;margin-bottom:14px;color:#caa15f;font-size:12px;letter-spacing:.12em;text-transform:uppercase}.promotion-choice__pieces{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.promotion-choice__pieces button{display:grid;place-items:center;gap:6px;min-width:0;border:1px solid rgba(255,255,255,.12);border-radius:8px;background:#efe6d3;padding:10px 6px 8px;color:#171716;cursor:pointer}.promotion-choice__pieces button:hover,.promotion-choice__pieces button:focus-visible{border-color:#caa15fe6;outline:2px solid rgba(202,161,95,.42);outline-offset:2px}.promotion-choice__pieces .piece{width:62px;max-width:100%}.promotion-choice__pieces strong{font-size:12px;font-weight:600;line-height:1.1}}@media(max-width:980px){.chess-hero,.chess-workspace{grid-template-columns:1fr}.chess-stats{grid-column:auto}.chess-stats{width:100%}}@media(max-width:640px){.chess-shell{padding:14px}.chess-stats{grid-template-columns:1fr}.board-header{display:grid}.board-wrap{grid-template-columns:18px minmax(0,1fr);gap:5px}.piece{width:84%}.piece--captured{width:23px;flex-basis:23px}.promotion-choice__pieces{grid-template-columns:repeat(2,minmax(0,1fr))}}