:root{--bg:#15171c;--panel:#1e2128;--panel-2:#262a33;--border:#33384a;--text:#e6e8ee;--muted:#9aa1b3;--accent:#6ea8fe;--pass:#3fb950;--fail:#f0883e;--light-sq:#ecdfc6;--dark-sq:#9a7b58;--last:#ffdc5a80;--left-edit:clamp(300px, 24%, 440px);--left-play:calc(100% - clamp(260px, 21%, 420px) - 12px);--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}html,body,#root{background:var(--bg);height:100%;color:var(--text);margin:0}button{font:inherit;color:inherit;background:var(--panel-2);border:1px solid var(--border);cursor:pointer;border-radius:6px;padding:4px 10px}button:hover:not(:disabled){border-color:var(--accent)}button:disabled{opacity:.45;cursor:default}button.primary{background:var(--accent);border-color:var(--accent);color:#0b1020;font-weight:600}button.big{padding:8px 16px;font-size:15px}button.active{border-color:var(--accent);background:#2c3550}.muted{color:var(--muted)}.small{font-size:12px}.app{flex-direction:column;height:100%;display:flex}.topbar{border-bottom:1px solid var(--border);background:var(--panel);align-items:center;gap:16px;padding:8px 16px;display:flex}.brand{letter-spacing:.02em;font-weight:700}.level-nav{flex:1;gap:4px;display:flex}.level-nav button{min-width:34px}.account{align-items:center;gap:8px;font-size:13px;display:flex}.layout{flex:1;gap:12px;min-height:0;padding:12px;display:flex}.left{flex:0 0 var(--left-edit);flex-direction:column;gap:10px;min-width:0;transition:flex-basis .35s;display:flex}.layout.play .left{flex-basis:var(--left-play)}.right{flex:1 1 0;grid-template-rows:minmax(0,1fr) minmax(0,1.2fr);gap:12px;min-width:0;min-height:0;display:grid}.left-bar{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.left-bar .mode-toggle{white-space:nowrap;margin-left:auto}.game-area{flex:1;align-items:flex-start;gap:14px;min-height:0;display:flex}.board-column{flex-direction:column;flex:none;gap:8px;width:100%;display:flex}.layout.play .board-column{width:min(100vh - 150px,58%)}.data-column{flex-direction:column;flex:1 1 0;align-self:stretch;gap:10px;min-width:0;min-height:0;display:flex}.layout.edit .game-area{flex-direction:column;overflow:hidden}.layout.edit .data-column{flex:1 1 0;align-self:auto;width:100%;min-height:0}.board{aspect-ratio:1;width:100%;height:auto;box-shadow:0 0 0 2px var(--border);-webkit-user-select:none;user-select:none;border-radius:4px;display:block}.board .sq.light{fill:var(--light-sq)}.board .sq.dark{fill:var(--dark-sq)}.board .last-move{fill:var(--last)}.board .in-check{fill:url(#check-glow)}.board .move-arrow{fill:none;stroke:#1e9646d9;stroke-width:.17px;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.board .move-arrow-head{fill:#1e9646d9}.board .coord{pointer-events:none;font-family:system-ui,sans-serif;font-size:12px;font-weight:600}.board .coord.on-dark{fill:var(--light-sq)}.board .coord.on-light{fill:var(--dark-sq)}.piece-white{fill:#f7f5ef;stroke:#2a2620;stroke-width:1.4px;stroke-linejoin:round;stroke-linecap:round}.piece-white .detail{stroke:#2a2620;stroke-width:1.4px}.piece-white .eye{fill:#2a2620;stroke:none}.piece-black{fill:#2b2a2e;stroke:#0d0c0f;stroke-width:1.4px;stroke-linejoin:round;stroke-linecap:round}.piece-black .detail{stroke:#cfcbd6;stroke-width:1.2px}.piece-black .eye{fill:#cfcbd6;stroke:none}.replay-bar{align-items:center;gap:6px;display:flex}.replay-bar .wide{min-width:72px}.replay-bar .counter{color:var(--muted);white-space:nowrap;margin-left:auto;font-size:13px}.result{border:1px solid var(--border);background:var(--panel);border-radius:8px;flex-direction:column;flex:none;gap:4px;padding:10px 12px;display:flex}.result.pass{border-color:var(--pass)}.result.fail{border-color:var(--fail)}.result .headline{font-weight:700}.result.pass .headline{color:var(--pass)}.result.fail .headline{color:var(--fail)}.result .detail.small{color:var(--muted);font-size:13px}.result button{align-self:flex-start;margin-top:4px}.inspector{border:1px solid var(--border);background:var(--panel);border-radius:8px;flex-direction:column;flex:none;gap:8px;padding:10px 12px;font-size:13px;display:flex}.inspector.empty{color:var(--muted)}.inspector-head{align-items:baseline;gap:10px;display:flex}.inspector-head .ply{font-weight:600}.inspector-head .who.you{color:var(--accent)}.inspector-head .who.computer{color:var(--muted)}.inspector-head .tag{border:1px solid;border-radius:999px;margin-left:auto;padding:1px 8px;font-size:12px}.inspector-head .tag.ok{color:var(--pass)}.inspector-head .tag.bad{color:var(--fail)}.inspector-grid{grid-template-columns:84px minmax(0,1fr);align-items:start;gap:6px 10px;margin:0;display:grid}.inspector-grid dt{color:var(--muted)}.inspector-grid dd{min-width:0;margin:0}.inspector code,.inspector pre{background:var(--panel-2);white-space:pre-wrap;word-break:break-all;border-radius:4px;margin:0;padding:3px 8px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;display:block}.inspector code{max-height:3.4em;overflow:auto}.inspector pre.logs{max-height:9.5em;overflow:auto}.inspector .reason{color:var(--fail)}.move-list{border:1px solid var(--border);background:var(--panel);border-radius:8px;flex:1 1 0;min-height:120px;margin:0;padding:0;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:13px;list-style:none;overflow:auto}.move-list li{cursor:pointer;gap:10px;padding:3px 10px;display:flex}.move-list li:hover{background:var(--panel-2)}.move-list li.current{background:#2c3550}.move-list .num{color:var(--muted);min-width:36px}.move-list .side{min-width:46px}.move-list .flag{color:var(--fail);margin-left:auto}.panel{border:1px solid var(--border);background:var(--panel);border-radius:8px;flex-direction:column;min-height:0;display:flex;overflow:hidden}.panel-header{border-bottom:1px solid var(--border);flex-direction:column;gap:4px;padding:6px 10px;display:flex}.tabs{gap:6px;display:flex}.tabs button{background:0 0;border-color:#0000}.tabs button.active{border-color:var(--border);background:var(--panel-2)}.summary{color:var(--muted);font-size:12px}.file-strip{flex-wrap:wrap;gap:2px;display:flex}.file-strip button{color:var(--muted);background:0 0;border-color:#0000;padding:2px 8px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px}.file-strip button.active{background:var(--panel-2);border-color:var(--border);color:var(--text)}.editor{flex:1;min-height:0}.file-tabs{border-bottom:1px solid var(--border);align-items:center;gap:2px;padding:4px 6px;display:flex}.file-tab{background:0 0;border-radius:6px;align-items:center;display:flex}.file-tab button{background:0 0;border-color:#0000;padding:3px 8px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px}.file-tab.active{background:var(--panel-2);outline:1px solid var(--border)}.file-tab .close{color:var(--muted);padding:0 6px 0 0}.file-tab .close:hover{color:var(--fail)}.add-file{color:var(--muted);margin-left:4px;padding:2px 8px;font-size:12px}.problems{border-top:1px solid var(--border);color:#f4b7a6;background:#2a1e1e;max-height:96px;margin:0;padding:6px 10px;font-size:12px;list-style:none;overflow:auto}.problems .where{color:var(--muted);font-family:ui-monospace,Cascadia Code,Consolas,monospace}.dialog-backdrop{z-index:10;background:#0000008c;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.dialog{background:var(--panel);border:1px solid var(--border);border-radius:10px;flex-direction:column;gap:10px;width:min(380px,90vw);padding:18px 20px;display:flex}.dialog h2{margin:0;font-size:18px}.dialog p{margin:0;font-size:13px}.dialog label{flex-direction:column;gap:4px;font-size:13px;display:flex}.dialog input{font:inherit;border:1px solid var(--border);background:var(--panel-2);color:var(--text);border-radius:6px;padding:6px 8px}.dialog .error{color:var(--fail);font-size:13px}.dialog .actions{flex-wrap:wrap;gap:8px;display:flex}@media (width<=900px){.layout{flex-direction:column;overflow:auto}.left,.layout.play .left{flex-basis:auto}.layout.play .board-column{width:100%}.game-area{flex-direction:column}.right{grid-template-rows:360px 420px}}.landing-top{border-bottom:1px solid var(--border);background:var(--panel);grid-template-columns:1fr auto 1fr;align-items:center;padding:12px 24px;display:grid}.landing-top-side.right{justify-self:end}.brand-big{letter-spacing:.04em;text-align:center;font-size:26px;font-weight:800}.hero{text-align:center;flex-direction:column;align-items:center;display:flex}.hero p{max-width:720px}.landing-board{width:min(440px,100%);margin:6px auto 22px}.hl{color:#d4d4d4}.hl-comment{color:#6a9955}.hl-string{color:#ce9178}.hl-keyword{color:#569cd6}.hl-type{color:#4ec9b0}.hl-fn{color:#dcdcaa}.hl-ident{color:#9cdcfe}.hl-number{color:#b5cea8}.hl-punct{color:#d4d4d4}.loading{color:var(--muted);padding:40px}.brand.link{letter-spacing:.02em;cursor:pointer;background:0 0;border:none;padding:0;font-weight:700}.landing{flex-direction:column;min-height:100%;display:flex}.landing-body{flex-direction:column;gap:40px;width:min(1040px,100% - 48px);margin:0 auto;padding:32px 0 60px;display:flex}.landing h1{max-width:820px;margin:0 0 18px;font-size:clamp(26px,3.4vw,40px);line-height:1.15}.landing h2{margin:0 0 12px;font-size:20px}.landing p{max-width:760px;margin:0 0 12px;line-height:1.55}.hero .cta{margin-top:8px}.how ol{flex-direction:column;gap:10px;max-width:800px;margin:0;padding-left:22px;line-height:1.5;display:flex}.code-grid{grid-template-columns:3fr 2fr;gap:14px;margin-bottom:14px;display:grid}.code-grid figure{border:1px solid var(--border);background:var(--panel);border-radius:8px;min-width:0;margin:0;overflow:hidden}.code-grid figure.wide{grid-column:1/-1}.code-grid figcaption{border-bottom:1px solid var(--border);color:var(--muted);padding:8px 12px;font-size:13px}.code-grid pre{background:#1e1e1e;margin:0;padding:12px 14px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:13px;line-height:1.5;overflow:auto}.landing .types p code{background:var(--panel-2);border-radius:4px;padding:1px 5px;font-family:ui-monospace,Cascadia Code,Consolas,monospace}.leaderboard table{border-collapse:collapse;width:min(640px,100%);font-size:14px}.leaderboard th,.leaderboard td{text-align:left;border-bottom:1px solid var(--border);padding:7px 10px}.leaderboard th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px;font-weight:600}.leaderboard td.time{font-family:ui-monospace,Cascadia Code,Consolas,monospace}.leaderboard tr.me td{background:#2c3550}.error.small{color:var(--fail);font-size:12px}@media (width<=720px){.code-grid{grid-template-columns:1fr}}