:root{color-scheme:dark;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:#e4edf5;background:#0b1420;font-synthesis:none;--muted:#94a7ba;--mint:#8ce8c6;--line:#2a3b4d;--light:#b7c7cc;--dark:#536f7e}
*{box-sizing:border-box}body{margin:0;min-width:280px;background:radial-gradient(ellipse at 15% 5%,#15342f55,transparent 45%),#0b1420}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.48}button{min-height:42px;padding:9px 14px;border:1px solid var(--line);border-radius:9px;background:#172535;color:inherit;font-size:13px;font-weight:650}button:hover:not(:disabled){border-color:#90b8c1;background:#24394c}.primary{background:#91e7c8;color:#112c28;border-color:#91e7c8}.primary:hover:not(:disabled){background:#b5f3dd;border-color:#b5f3dd}.secondary{background:#253b4e;border-color:#50728c}.quiet{background:transparent}.danger-text{color:#ffadad}.text-button{padding:0;min-height:28px;border:0;background:none;color:var(--mint);font-size:11px}a{color:#a5d8da;text-decoration:none}a:hover{text-decoration:underline}input{width:100%;min-width:0;min-height:46px;border:1px solid #40546c;border-radius:9px;padding:11px 12px;background:#0b1726;color:#eff5f9;font-size:15px}input::placeholder{color:#8195aa}label{display:block;font-size:12px;font-weight:650;color:#bfd0df;margin-bottom:7px}:focus-visible{outline:3px solid #f8d88c;outline-offset:3px}[hidden]{display:none!important}
.site-head{max-width:1160px;margin:auto;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:25px 28px}.chess-brand{display:flex;align-items:center;gap:12px;color:#edf5fa;font-size:32px;font-weight:850;letter-spacing:-1.5px}.chess-brand:hover{text-decoration:none}.chess-brand>span{font-size:12px;letter-spacing:3px;font-weight:700;border-left:1px solid #456174;padding-left:12px}.chess-brand small{display:block;font-size:8px;letter-spacing:1.3px;color:#92a6b6;margin-top:4px}.back-link{font-size:12px}.site-footer{max-width:1104px;margin:24px auto 0;padding:20px 0 26px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid #243347;color:#879bad;font-size:10px;line-height:1.6}main{max-width:1104px;margin:8px auto;padding:0}.eyebrow{font-size:10px;font-weight:750;letter-spacing:2px;color:#8fe1c6;margin:0 0 12px}.card,.game-card{border:1px solid var(--line);border-radius:16px;background:#111f2e}.lobby{display:grid;grid-template-columns:1fr 1fr;gap:48px;max-width:920px;margin:45px auto 80px;padding:50px}.lobby-intro h1{font-size:clamp(36px,5vw,56px);line-height:1.05;letter-spacing:-2px;margin:14px 0 22px}.lobby-intro>p:not(.eyebrow){font-size:14px;line-height:1.7;color:#a9becf;max-width:320px}.lobby-pieces{display:flex;gap:4px;margin-top:26px}.lobby-pieces span{font-family:Georgia,"Segoe UI Symbol",serif;font-size:80px;line-height:1.1;color:#e5ece5;text-shadow:0 5px 20px #0004}.lobby-pieces span+span{color:#829ead}.lobby-intro .lobby-tag{font-size:11px;color:#91aabd}.room-form{align-self:center}.room-form>button{width:100%;margin-top:14px}.room-form .primary{display:flex;justify-content:space-between}.divider{display:flex;align-items:center;gap:12px;margin:28px 0 20px;color:#98acbd;font-size:11px}.divider:before,.divider:after{content:"";height:1px;flex:1;background:#2d4153}.form-status{min-height:20px;font-size:12px;color:#f9c392;line-height:1.6;margin:14px 0 0}.fine-print{font-size:11px;color:#8fa7ba;line-height:1.6;margin:14px 0 0}.storage-note{color:#f0c681;font-size:12px;text-align:center;padding:12px}.noscript{padding:24px;text-align:center}
.room-bar{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:5px}.room-bar .eyebrow{margin-bottom:6px}.room-label{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;letter-spacing:1px;margin:0;color:#a5bdcf}.room-bar-actions,.button-row{display:flex;gap:8px;flex-wrap:wrap}.invite-status{min-height:17px;margin:4px 0 12px;font-size:11px;color:#b6dcca}.copy-fallback{padding:10px 0}.copy-fallback input{font-size:12px}.game-layout{display:grid;grid-template-columns:minmax(0,650px) minmax(260px,1fr);gap:24px;align-items:start}.board-panel{min-width:0}.board-frame{padding:6px;background:#263c4b;border-radius:9px;box-shadow:0 12px 35px #0004}.player-bar{min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:10px 2px}.player-identity{display:flex;align-items:center;min-width:0;gap:10px}.player-dot{width:25px;height:25px;flex:none;border-radius:50%;border:2px solid #90a4b1;background:#e7eee9}.player-dot.black{background:#1a2735}.player-name{font-size:14px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:320px}.player-side{font-size:10px;color:var(--muted);margin-top:3px}.player-tag{flex:none;font-size:10px;padding:5px 8px;border:1px solid #334b5f;border-radius:6px;color:#a4bcd0}.player-bar.is-turn .player-tag{color:#b6f5de;border-color:#5d9f91;background:#1b3c37}.board-tools{display:flex;align-items:center;justify-content:space-between;gap:8px;color:#9fb8ca;font-size:11px;margin-top:2px}.board-tools button{font-size:11px;min-height:34px;padding:6px 10px}.keyboard-note{font-size:10px;line-height:1.7;color:#839cae;margin:12px 0}.game-sidebar{display:flex;flex-direction:column;gap:14px;padding-top:60px;min-width:0}.game-card{padding:20px}.connection-row{display:flex;align-items:center;gap:6px;color:#9bb1c2;font-size:10px;min-height:22px}.connection-row>button{margin-left:auto}.connection-dot{width:6px;height:6px;background:#bfa06a;border-radius:50%}.connection-dot.connected{background:#83dcb6}.connection-dot.offline{background:#f4a27f}.status-card h1{font-size:27px;line-height:1.15;letter-spacing:-.8px;margin:13px 0 10px}.muted{font-size:12px;line-height:1.6;color:#9db3c7;margin:8px 0}.action-status{font-size:11px;line-height:1.6;color:#f8c997;margin:10px 0}.action-status:empty{display:none}#seat-form{margin-top:18px}#seat-form button{width:100%;margin-top:10px}.status-card>.button-row{margin-top:18px}.button-row>button{flex:1;font-size:12px;white-space:nowrap}.notice,.confirm-box{margin-top:16px;padding:12px;background:#23394a;border:1px solid #4c697d;border-radius:9px}.notice p,.confirm-box p{font-size:12px;line-height:1.6;margin:0 0 10px}.confirm-box{background:#302c27;border-color:#73624c}#rematch-actions{margin-top:18px}#rematch{width:100%}.section-label{display:flex;align-items:center;justify-content:space-between;gap:8px}.game-card h2{font-size:13px;margin:0}.section-label>span{font-size:10px;color:#88a3b8}.moves-labels,#move-list li{display:grid;grid-template-columns:24px 1fr 1fr;gap:8px}.moves-labels{padding:14px 8px 8px;color:#859daf;font-size:10px}#move-list{margin:0;padding:0;list-style:none;max-height:230px;overflow-y:auto;scrollbar-width:thin;font:12px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace}#move-list li{padding:6px 8px;border-radius:5px}#move-list li:nth-child(odd){background:#20334366}#move-list li>span:first-child{color:#8099ad}#move-list li:last-child{color:#b3edcf}.score-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:12px}.score-row>div{min-width:0}.score-row strong{display:block;max-width:200px;text-overflow:ellipsis;white-space:nowrap;overflow:hidden;font-size:12px}.score-row small{font-size:10px;color:#8fa7ba}.score-row>b{font-size:17px;color:#b9e1d3;white-space:nowrap}.room-expiry{font-size:10px;line-height:1.6;color:#7f9bae;margin:20px 0}
#chess-board{aspect-ratio:1;display:grid;grid-template-rows:repeat(8,1fr);overflow:hidden;border-radius:4px;touch-action:manipulation}.board-row{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));min-height:0}.square{border:0;border-radius:0;min-width:0;min-height:0;width:100%;height:100%;padding:0;position:relative;display:grid;place-items:center;background:var(--light);color:#233d4d;isolation:isolate;overflow:hidden}.square.dark{background:var(--dark);color:#dfebea}.square:hover:not(:disabled){background:var(--light)}.square.dark:hover:not(:disabled){background:var(--dark)}.square.is-last{background:#ced797}.square.dark.is-last{background:#78967d}.square.is-selected,.square.is-selected:hover{background:#e5c87c}.square.dark.is-selected,.square.dark.is-selected:hover{background:#b9a76d}.square.is-check{background:#cf706c}.square.dark.is-check{background:#b05458}.square[aria-disabled=true]{cursor:default}.square:focus-visible{outline:0;box-shadow:inset 0 0 0 4px #ffe29b;z-index:1}.square.is-legal:after{content:"";position:absolute;width:24%;height:24%;border-radius:50%;background:#153c4a70;z-index:1;pointer-events:none}.square.is-capture:after{width:91%;height:91%;background:transparent;border:5px solid #123b4777}.piece{width:84%;height:84%;filter:drop-shadow(0 2px 1px #0002);pointer-events:none;z-index:2}.piece.white{--piece:#f3f0df;--piece-line:#263849;--piece-detail:#344a58}.piece.black{--piece:#203448;--piece-line:#e0e8de;--piece-detail:#e0e8de}.square-coordinate{position:absolute;font:700 10px/1 ui-monospace,SFMono-Regular,Consolas,monospace;opacity:.9;pointer-events:none;z-index:3}.file-coordinate{right:3px;bottom:2px}.rank-coordinate{left:3px;top:3px}#chess-board.is-paused{opacity:.8}#promotion-dialog{color:#dbeaf4;background:#122232;border:1px solid #567387;border-radius:16px;padding:22px;width:min(420px,calc(100vw - 24px));max-height:85dvh}#promotion-dialog::backdrop{background:#030b14bd}#promotion-dialog h2{font-size:23px;margin:0 0 8px}#promotion-dialog>p{font-size:12px;color:#a5bbcc;margin:0 0 20px}#promotion-options{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:16px 0}#promotion-options button{display:flex;flex-direction:column;align-items:center;padding:6px;gap:4px;font-size:10px;background:#54707f;border-color:#7c9aaa}#promotion-options .piece{width:100%;height:auto;aspect-ratio:1}#cancel-promotion{width:100%}
@media(max-width:1160px){main{margin-inline:28px}.site-footer{margin-inline:28px}.game-layout{grid-template-columns:minmax(0,1fr) 285px;gap:20px}.game-card{padding:17px}}
@media(max-width:760px){.site-head{padding:17px 16px}.chess-brand{font-size:27px}.back-link{font-size:11px}main{margin:4px 16px}.site-footer{margin:24px 16px 0;padding-top:16px;display:block}.site-footer>span{display:block;margin-bottom:5px}.lobby{grid-template-columns:1fr;gap:25px;margin:18px auto;padding:26px;max-width:480px}.lobby-intro{position:relative;padding-right:60px}.lobby-intro h1{font-size:39px}.lobby-intro>p:not(.eyebrow){font-size:12px}.lobby-pieces{position:absolute;right:-7px;top:20px;display:block;margin:0}.lobby-pieces span{display:block;font-size:52px;line-height:1.05}.lobby-intro .lobby-tag{font-size:10px}.game-layout{display:flex;flex-direction:column;gap:8px}.board-panel{width:100%;max-width:570px;align-self:center}.game-sidebar{padding-top:0;width:100%;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px}.status-card{grid-column:1/-1}.status-card h1{font-size:23px;margin:8px 0}.status-card>.muted{margin:6px 0}.moves-card,.score-card{padding:15px}.game-card{border-radius:12px}.player-bar{min-height:49px;padding:7px 1px}.player-name{font-size:12px;max-width:260px}.player-dot{width:21px;height:21px}.player-side,.player-tag{font-size:9px}.player-tag{padding:4px 6px}.room-bar{gap:8px}.room-bar-actions{gap:6px}.room-bar button{min-height:36px;font-size:11px;padding:7px 9px}.room-bar .eyebrow{font-size:8px;letter-spacing:1.1px}.room-label{font-size:10px;letter-spacing:.5px}.invite-status{margin-bottom:2px;font-size:10px}.board-frame{padding:4px}.keyboard-note{font-size:9px;margin:7px 0}.board-tools{font-size:10px}.square-coordinate{font-size:8px}#move-list{max-height:180px;font-size:11px}.moves-labels,#move-list li{grid-template-columns:17px 1fr 1fr;gap:4px}.moves-labels,#move-list li{padding-inline:3px}.score-row{margin-top:10px}.score-row strong{max-width:120px;font-size:11px}.score-row small{font-size:9px}.score-row>b{font-size:14px}.fine-print{font-size:10px}.room-expiry{margin-top:14px}.game-card h2{font-size:12px}}
@media(max-width:360px){main{margin-inline:10px}.site-head{padding-inline:10px}.site-footer{margin-inline:10px}.chess-brand{font-size:24px}.chess-brand>span{font-size:10px}.room-bar-actions{gap:4px}.room-bar button{padding-inline:7px}.room-label{font-size:9px}.lobby{padding:22px}.lobby-intro h1{font-size:35px}.game-sidebar{gap:8px}.moves-card,.score-card{padding:12px}.square-coordinate{font-size:7px}.player-name{max-width:205px}.square.is-capture:after{border-width:3px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}

.room-form select{width:100%;min-height:46px;padding:10px;border:1px solid #45617a;border-radius:8px;background:#101e2e;color:#eaf3ff;font:inherit}.chess-clock{font:700 22px ui-monospace,monospace;margin-left:18px;font-variant-numeric:tabular-nums}.private-board{visibility:hidden}#watch-vote [aria-pressed=true]{border-color:#98edcf;background:#153b35}#watch-link{width:100%;margin-top:12px}

/* Classic ivory/charcoal board with clearly separated Staunton silhouettes. */
:root{--light:#f0eee8;--dark:#66727c}.board-frame{background:#29343e;padding:7px;box-shadow:0 18px 60px #0006}.square{color:#49565d}.square.dark{color:#f1f2eb}.piece{width:94%;height:94%;filter:drop-shadow(0 2px 1px #0007)}.piece.white{--piece:#fffaf0;--piece-line:#242b31;--piece-detail:#242b31}.piece.black{--piece:#182027;--piece-line:#d8dee0;--piece-detail:#f1f4f3}.square.is-last{background:#dfdf9e}.square.dark.is-last{background:#909952}.square.is-selected,.square.is-selected:hover{background:#f0d67c}.square.dark.is-selected,.square.dark.is-selected:hover{background:#c4aa52}.square.is-premove,.square.is-premove:hover{background:#9fbded;box-shadow:inset 0 0 0 3px #4e81cc}.square.dark.is-premove,.square.dark.is-premove:hover{background:#527aae}.chess-clock{font-size:clamp(21px,3vw,30px);background:#273c4b;padding:7px 11px;border-radius:7px;color:#f0fff9;min-width:90px;text-align:center}.clock-low{color:#ffb6bc;background:#622c3b;box-shadow:inset 0 0 0 1px #e57b8a}.chess-preferences{display:flex;gap:9px 16px;flex-wrap:wrap;padding:12px 0 0;font-size:12px;color:#c4d8e4}.chess-preferences label{display:flex;gap:5px;align-items:center}.chess-preferences input{width:16px;height:16px;accent-color:#80cfae}.premove-note{font-size:11px;color:#aac9ee;min-height:17px;margin:8px 0}.player-name{max-width:230px}.player-identity{flex-wrap:wrap}.piece g{stroke-width:2.7}.square-coordinate{opacity:1;font-size:11px}.game-sidebar{padding-top:65px}@media(max-width:760px){.game-sidebar{padding-top:0}.player-name{max-width:145px}.chess-clock{min-width:65px;margin-left:4px;padding:5px 8px}.piece{width:96%;height:96%}.square-coordinate{font-size:8px}.chess-preferences{font-size:11px;gap:7px 12px}}

.board-frame{position:relative}.chess-result-overlay{position:absolute;inset:0;z-index:7;display:grid;place-items:center;background:#06131b88;backdrop-filter:blur(3px);border-radius:8px;padding:18px}.chess-result-overlay[hidden]{display:none}.chess-result-card{text-align:center;width:min(330px,95%);padding:27px 22px;border:1px solid #a0dbc0;border-radius:18px;background:radial-gradient(ellipse at top,#264e3e,#10212e 75%);box-shadow:0 15px 60px #0007}.chess-result-icon{font:64px/1 Georgia;color:#f5e8b9}.chess-result-card h2{font-size:34px;color:#f1f6ec;margin:14px 0 8px}.chess-result-card p{font-size:13px;color:#b6ceca;line-height:1.5}.chess-result-score{display:block;font:700 30px ui-monospace;color:#a7efd0;margin:18px}.chess-result-card button{display:block;width:100%;margin-top:9px;min-height:40px}.chess-result-card button:last-child{background:transparent;border-color:#56746b;color:#b7cfc6}@media(max-width:450px){.chess-result-card{padding:14px}.chess-result-icon{font-size:39px}.chess-result-card h2{font-size:25px;margin:8px 0}.chess-result-score{font-size:22px;margin:10px}.chess-result-card p{font-size:11px;margin:6px 0}.chess-result-card button{font-size:12px;min-height:34px;padding:6px}}