: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 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.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 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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}}.brand-big{letter-spacing:.04em;text-align:center;margin-bottom:6px;font-size:34px;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 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td{background:#2c3550}.error.small{color:var(--fail);font-size:12px}@media (width<=720px){.code-grid{grid-template-columns:1fr}}.shell{flex-direction:column;height:100%;display:flex}.shell .topbar{gap:12px}.topbar-spacer{flex:1}.brand{color:inherit;text-decoration:none}.hamburger{background:0 0;flex-direction:column;justify-content:space-between;width:36px;height:32px;padding:6px 8px;display:flex}.hamburger span{background:var(--text);border-radius:2px;height:2px;display:block}.shell-body{flex:1;min-height:0;display:flex;position:relative}.sidenav{background:var(--panel);white-space:nowrap;border-right:1px solid #0000;flex-direction:column;flex:0 0 0;width:0;padding:10px 0;transition:width .25s,flex-basis .25s;display:flex;overflow:hidden}.shell.nav-open .sidenav{border-right-color:var(--border);flex-basis:232px;width:232px}.sidenav a,.sidenav .nav-level{color:var(--text);padding:8px 18px;font-size:14px;text-decoration:none;display:block}.sidenav a:hover{background:var(--panel-2)}.sidenav a.active{border-right:3px solid var(--accent);background:#2c3550}.nav-levels{flex-direction:column;padding:4px 0 8px;display:flex}.nav-levels .nav-level{padding:5px 18px 5px 30px;font-size:13px}.nav-levels .nav-level .num{min-width:18px;color:var(--muted);display:inline-block}.nav-levels .nav-level.locked{color:var(--muted);opacity:.6}.nav-scrim{display:none}.shell-main{flex-direction:column;flex:1;min-width:0;min-height:0;display:flex;overflow:auto}.shell-main>.app{height:100%}.shell-main>.landing{min-height:100%}.notice{border-bottom:1px solid var(--border);background:#2c3550;gap:16px;padding:6px 16px;font-size:13px;display:flex}.page{width:min(1040px,100% - 48px);margin:0 auto;padding:28px 0 60px}.page h1{margin:0 0 6px;font-size:26px}.page h2{margin:24px 0 10px;font-size:18px}.progress-table{border-collapse:collapse;width:min(560px,100%);font-size:14px}.progress-table th,.progress-table td{text-align:left;border-bottom:1px solid var(--border);padding:7px 10px}.progress-table th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px}.progress-table a{color:var(--accent)}.library-page{flex-direction:column;height:100%;padding-bottom:20px;display:flex}.library-head .file-strip a{color:var(--muted);border:1px solid #0000;border-radius:6px;padding:2px 8px;font-family:ui-monospace,Cascadia Code,Consolas,monospace;font-size:12px;text-decoration:none}.library-head .file-strip a.active{background:var(--panel-2);border-color:var(--border);color:var(--text)}.library-head p code{background:var(--panel-2);border-radius:4px;padding:1px 5px;font-family:ui-monospace,Cascadia Code,Consolas,monospace}.library-editor{flex:1;min-height:420px;margin-top:10px}a.button{background:var(--accent);color:#0b1020;border-radius:6px;padding:8px 16px;font-size:15px;font-weight:600;text-decoration:none;display:inline-block}@media (width<=900px){.sidenav{z-index:5;position:absolute;top:0;bottom:0;left:0}.nav-scrim{z-index:4;background:#00000073;border:none;display:block;position:absolute;inset:0}}.bot-bar{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.bot-bar button{padding:3px 9px;font-size:12px}.notice.inline{border:1px solid var(--border);border-radius:8px;margin:8px 0 12px}.challenge-table{border-collapse:collapse;width:min(860px,100%);font-size:14px}.challenge-table th,.challenge-table td{text-align:left;border-bottom:1px solid var(--border);vertical-align:middle;padding:7px 10px}.challenge-table th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:12px}.challenge-table td.num{font-family:ui-monospace,Cascadia Code,Consolas,monospace}.challenge-table td.up{color:var(--pass)}.challenge-table td.down{color:var(--fail)}.challenge-table tr.me td{background:#2c3550}.challenge-table a{color:var(--accent)}.match-page .match-tabs{margin:12px 0}.game-replay{align-items:flex-start;gap:14px;display:flex}.game-replay .board-column{flex:none;width:min(100vh - 260px,52%)}.game-replay .data-column{flex:1 1 0;min-width:0;max-height:min(100vh - 260px,720px)}@media (width<=900px){.game-replay{flex-direction:column}.game-replay .board-column{width:100%}}