:root{color:#202722;font-synthesis:none;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;background:#fff;font-family:Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.42}a{color:inherit}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline-offset:3px;outline:3px solid #36755e}.chess-app{--green:#245747;--muted:#65706a;--line:#dfe4e1;--board-light:#eeeed8;--board-dark:#8fa77c;--board-size:640px;padding:0 32px}.chess-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;max-width:1200px;height:66px;margin:auto;display:flex}.chess-header a{font-size:14px;text-decoration:none}.chess-header a:hover{color:var(--green);text-decoration:underline}.chess-header .brand{font-family:Georgia,Times New Roman,serif;font-size:23px;font-weight:600}.chess-main{max-width:1160px;margin:auto;padding-top:26px}.chess-main h1{letter-spacing:-3px;margin:0 0 20px;font-family:Georgia,Times New Roman,serif;font-size:clamp(44px,5.2vw,76px);font-weight:500;line-height:1.1}.chess-layout{grid-template-columns:minmax(0,664px) minmax(310px,380px);align-items:start;gap:56px;display:grid}.play-region{min-width:0}.board-status{text-align:center;flex-direction:column;justify-content:flex-start;align-items:center;gap:5px;min-height:49px;padding:2px 0 10px 24px;display:flex}.board-status strong{font-size:19px;font-weight:600}.board-status>span{color:var(--muted);font-size:13px}.board-wrap{grid-template-rows:auto 30px;grid-template-columns:24px minmax(0,1fr);display:grid;position:relative}.rank-labels{grid-area:1/1;grid-template-rows:repeat(8,1fr);padding-right:9px;display:grid}.rank-labels span,.file-labels span{color:#38463e;place-items:center;font-size:13px;display:grid}.file-labels{grid-area:2/2;grid-template-columns:repeat(8,1fr);display:grid}.chess-board{aspect-ratio:1;-webkit-user-select:none;user-select:none;grid-area:1/2;grid-template-rows:repeat(8,1fr);width:100%;display:grid}.board-row{grid-template-columns:repeat(8,minmax(0,1fr));min-height:0;display:grid}.square{width:100%;height:100%;color:inherit;touch-action:manipulation;border:0;border-radius:0;place-items:center;padding:0;display:grid;position:relative}.square.light{background:var(--board-light)}.square.dark{background:var(--board-dark)}.square.own-piece{touch-action:none;cursor:grab}.square[aria-disabled=true]{cursor:default}.square.last-move:after{content:"";pointer-events:none;background:#e0b52738;position:absolute;inset:0}.square.selected{background:#bdd09a;box-shadow:inset 0 0 0 4px #245747}.square.check{background:#d79080}.square:focus-visible{outline-offset:-4px;z-index:2}.chess-piece{pointer-events:none;z-index:1;background-image:url(/assets/chess/pieces.png);background-repeat:no-repeat;background-size:600% 200%;width:100%;height:100%;display:block;position:relative}.move-dot{pointer-events:none;z-index:2;background:#24574775;border-radius:50%;width:24%;height:24%;position:absolute}.capture-ring{pointer-events:none;z-index:2;border:5px solid #24574790;border-radius:50%;position:absolute;inset:4%}.drag-ghost{z-index:20;pointer-events:none;filter:drop-shadow(0 3px 3px #0003);position:fixed;transform:translate(-50%,-50%)}.board-toolbar{justify-content:center;align-items:center;gap:18px;padding:24px 0 0 24px;display:flex}.chess-app button:not(.square):not([role=tab]):not(.history-table button):not(.legal-list button):not(.notice button){color:#26372f;background:#fff;border:1px solid #c9d1cd;border-radius:5px;min-height:43px;padding:10px 17px;font-size:14px;line-height:1.35;transition:background .12s,border-color .12s}.chess-app button:not(.square):not(:disabled):hover{background-color:#f3f6f3}.chess-app button.primary{background:var(--green)!important;color:#fff!important;border-color:var(--green)!important}.chess-app button.primary:not(:disabled):hover{background:#173f32!important}.chess-app .board-toolbar button{min-height:49px!important;padding:13px 24px!important;font-size:15px!important}.chess-app button.text-button{text-underline-offset:3px;text-decoration:underline;min-height:32px!important;color:var(--green)!important;background:0 0!important;border:0!important;padding:4px 0!important;font-size:13px!important}.chess-app button.quiet{margin:12px auto 0;display:block;border:0!important}.return-live{margin:16px auto 0;display:block}.chess-panel{border:1px solid #e4e8e5;border-radius:6px;min-width:0;margin-top:0;padding:0 22px 20px}.panel-tabs{border-bottom:1px solid var(--line);gap:12px;display:flex}.panel-tabs button{color:var(--muted);background:0 0;border:0;border-bottom:3px solid #0000;padding:18px 18px 14px;font-size:15px}.panel-tabs button[aria-selected=true]{color:var(--green);border-bottom-color:var(--green);font-weight:600}.chess-panel h2{margin:0;font-size:17px;font-weight:600;line-height:1.4}.history-region{flex-direction:column;min-height:488px;padding-top:27px;display:flex}.section-heading{justify-content:space-between;align-items:center;gap:8px;display:flex}.history-empty{color:#65706a;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:12px;min-height:360px;font-size:14px;display:flex}.history-empty svg{color:#919b96}.history-scroll{scrollbar-width:thin;flex:1;max-height:370px;margin-top:18px;overflow:auto}.history-table{border-collapse:collapse;table-layout:fixed;width:100%}.history-table th{color:var(--muted);text-align:left;width:40px;font-size:13px;font-weight:400}.history-table button{text-align:left;background:0 0;border:0;border-radius:3px;width:100%;padding:10px 12px;font-size:16px}.history-table button.current-move{color:#1b4d39;background:#e6efe8;font-weight:600}.history-navigation{justify-content:center;align-items:center;gap:6px;margin-top:auto;padding:12px 0;display:flex}.history-navigation button{place-items:center;display:grid;min-height:32px!important;padding:6px!important}.history-navigation span{color:var(--muted);text-align:center;min-width:50px;font-size:12px}.game-actions{padding:18px 0 26px}.button-row{flex-wrap:wrap;align-items:center;gap:8px;margin-top:10px;display:flex}.game-actions>.button-row{flex-wrap:nowrap}.game-actions>.button-row button{flex:1;background:#f8f9f8!important;padding:12px 8px!important;font-size:13px!important}.claim-buttons{gap:8px;margin:12px 0;display:grid}.claim-buttons button{color:var(--green)!important;background:#edf4ec!important;border-color:#adbfac!important}.current-fen{border-top:1px solid var(--line);padding-top:22px}.fen-copy{align-items:stretch;gap:8px;margin-top:12px;display:flex}.fen-copy textarea{resize:vertical;color:#49554e;flex:1;min-width:0;padding:8px;font:12px/1.5 ui-monospace,SFMono-Regular,Consolas,monospace}.fen-copy button{padding:8px 13px!important}.chess-app textarea,.chess-app input:not([type=checkbox]),.chess-app select{color:#26372f;background:#fff;border:1px solid #ced6d1;border-radius:4px;max-width:100%;padding:9px 10px;font-size:14px;line-height:1.45}.chess-app textarea{resize:vertical;width:100%;min-height:64px}.chess-app textarea.mono,.chess-app code{overflow-wrap:anywhere;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px}.tools-content{padding:0}.tool-section{border-bottom:1px solid var(--line);padding:24px 0}.tool-section:last-child{border-bottom:0}.tool-section label{color:#536158;margin:13px 0 6px;font-size:12px;font-weight:600;display:block}.tool-section>select{width:100%}.hint{color:var(--muted);margin:10px 0 0;font-size:12px;line-height:1.6}.move-entry{grid-template-columns:72px minmax(0,1fr) auto;gap:7px;margin-top:13px;display:grid}.move-entry input{width:100%}.move-entry button{padding:8px 12px!important}.chess-app details summary{cursor:pointer;color:#42554a;font-size:13px;line-height:1.5}.legal-details{margin-top:17px}.legal-details summary span{color:var(--muted);margin-left:5px}.legal-list{grid-template-columns:1fr 1fr;gap:4px;max-height:220px;margin-top:12px;display:grid;overflow:auto}.legal-list button{background:#f4f7f4;border:0;border-radius:3px;justify-content:space-between;align-items:center;padding:8px;font-size:13px;display:flex}.legal-list code{color:var(--muted);font-size:11px}.engine-facts{margin:14px 0 0;font-size:12px}.engine-facts>div{border-bottom:1px solid #edf0ed;justify-content:space-between;align-items:baseline;gap:12px;padding:6px 0;display:flex}.engine-facts dt{color:#647168}.engine-facts 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loading-turn{to{transform:rotate(360deg)}}.load-error{background:#fff5f1;border-left:3px solid #a14337;max-width:600px;margin-bottom:20px;padding:20px;font-size:14px;line-height:1.6}.load-error h2{margin-top:0;font-size:20px}.chess-footer{border-top:1px solid var(--line);text-align:center;color:#768078;max-width:1200px;margin:20px auto 0;padding:20px 0 24px;font-size:12px}.chess-footer details{max-width:600px;margin:12px auto 0}.chess-footer details p{text-align:left;line-height:1.7}.chess-footer details summary{color:#768078;font-size:12px}.chess-dialog{color:#202722;border:1px solid #d4ddd6;border-radius:8px;width:min(480px,100% - 32px);padding:28px;box-shadow:0 20px 80px #0b251a26}.chess-dialog::backdrop{background:#172c244d}.chess-dialog h2{margin:0 0 14px;font-family:Georgia,serif;font-size:28px;font-weight:500}.chess-dialog p{color:#58655d;font-size:14px;line-height:1.6}.promotion-options{grid-template-columns:repeat(4,1fr);gap:8px;margin-top:22px;display:grid}.promotion-options button{flex-direction:column;align-items:center;display:flex;padding:4px!important}.promotion-options .chess-piece{aspect-ratio:1;width:100%;height:auto}.promotion-options button>span:last-child{text-transform:capitalize;padding-bottom:7px;font-size:12px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}[hidden]{display:none!important}@media (width<=1000px){.chess-app{padding:0 24px}.chess-layout{grid-template-columns:minmax(0,1fr) 320px;gap:28px}.chess-panel{padding:0 16px 18px}.history-region{min-height:380px}.history-empty{min-height:260px}.board-toolbar{gap:8px}.chess-app .board-toolbar button{padding:11px 12px!important;font-size:13px!important}}@media (width<=760px){.chess-app{padding:0 16px}.chess-header{height:57px}.chess-header .brand{font-size:20px}.chess-header a{font-size:12px}.chess-main{padding-top:21px}.chess-main h1{letter-spacing:-1.6px;margin-bottom:20px;font-size:44px}.chess-layout{flex-direction:column;gap:0;display:flex}.play-region{width:100%}.board-status{min-height:42px;padding-left:18px}.board-status strong{font-size:16px}.board-wrap{grid-template-rows:auto 24px;grid-template-columns:18px minmax(0,1fr)}.rank-labels{padding-right:6px}.rank-labels span,.file-labels span{font-size:11px}.board-toolbar{gap:8px;padding:16px 0 0 18px}.chess-app .board-toolbar button{flex:1;min-height:42px!important;padding:10px 8px!important;font-size:12px!important}.notice-slot{min-height:12px;margin:12px 0 0 18px}.chess-panel{border:0;border-top:1px solid var(--line);border-radius:0;width:100%;margin-top:12px;padding:0}.history-region{min-height:240px;padding-top:22px}.history-empty{min-height:200px;font-size:13px}.history-scroll{max-height:260px}.game-actions{padding:14px 0 22px}.game-actions>.button-row button{padding:11px!important}.current-fen{padding-top:20px}.chess-footer{margin-top:26px}.chess-dialog{padding:22px}.chess-dialog .button-row{align-items:stretch}.chess-dialog .button-row button{flex:1}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}