:root{color-scheme:dark;font:15px/1.5 system-ui,sans-serif;color:#e9eef3;background:#0c121c;--line:#34465d;--accent:#80d5e8}
*{box-sizing:border-box}body{margin:0}header,main{max-width:1440px;margin:auto;padding:28px 36px}header{padding-bottom:6px}header a{float:right}header span{font-size:12px;letter-spacing:2px;color:var(--accent)}h1{font-size:40px;line-height:1.1;margin:12px 0}h2{font-size:22px;margin:0 0 18px}h3{margin-bottom:10px}p{margin:10px 0}a{color:var(--accent)}section{border:1px solid var(--line);border-radius:12px;background:#121c2a;padding:24px;margin-bottom:24px}
button,input,select{font:inherit;color:inherit;background:#1e2d41;border:1px solid #4d627d;border-radius:5px;padding:7px 10px}button{cursor:pointer;white-space:nowrap}button:hover{background:#314762}button:disabled{cursor:default;border-style:dashed;background:#182333;color:#bdc8d7}button.primary{background:#126679;border-color:#80d5e8;font-weight:650}input[type=checkbox]{accent-color:var(--accent)}input[type=number]{width:110px}small,.note{color:#bed0e2;font-size:13px}label{display:flex;align-items:center;gap:8px}fieldset{border:0;padding:0;margin:0;min-width:0}legend{font-weight:650;margin-bottom:12px}fieldset label{margin-bottom:8px;justify-content:space-between}#lab-opponents label{justify-content:flex-start;padding:5px 0}#lab-opponents label span{display:block;font-size:12px;color:#b8cbde}#lab-boards{width:100%;min-height:175px}#lab-collection{max-width:75%}.config-grid{display:grid;grid-template-columns:1fr 1.2fr .9fr;gap:30px}.board-tools,.launch,.run-bar,.section-bar,.archive-tools,.pages,.replay-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.board-tools{margin:10px 0}.launch,.section-bar{justify-content:space-between}.launch{margin-top:22px}.section-bar h2{margin:0}.section-bar{margin-bottom:16px}.run-bar{margin:15px 0}.run-bar strong{margin-right:auto}progress{width:100%;accent-color:var(--accent)}.table-scroll{overflow-x:auto}table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;white-space:nowrap}th,td{text-align:right;border-bottom:1px solid var(--line);padding:11px 12px}th{font-size:12px;color:#b8cbde}td:first-child,th:first-child{text-align:left}#lab-games td{text-align:left}#lab-live,#lab-settings,#lab-storage{font-size:13px;color:#bed0e2}.archive-tools{margin:20px 0}details{margin:16px 0}summary{cursor:pointer}.pages{justify-content:flex-end;margin-top:12px}#lab-error{border:1px solid #ec9b73;padding:15px;color:#ffd2b8;background:#381e19}#replay-canvas{display:block;width:100%;height:560px;background:#090e16;border-radius:8px}#replay-seek{width:100%;padding:0;margin-top:16px;accent-color:var(--accent)}#replay-hover{min-height:24px}.replay-controls button{font-size:13px}#lab-runs{max-width:500px}[hidden]{display:none!important}@media(max-width:950px){.config-grid{grid-template-columns:1fr 1fr}.config-grid fieldset:last-child{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr;gap:10px 25px}.config-grid small{grid-column:1/-1}header,main{padding:20px}.section-bar{align-items:flex-start}#replay-canvas{height:420px}}@media(max-width:600px){.config-grid{display:block}.config-grid fieldset{margin-bottom:25px}.config-grid fieldset:last-child{display:block}section{padding:16px}header a{float:none;display:block;margin-bottom:16px}#lab-runs{max-width:240px}h1{font-size:32px}}

.page-tabs{float:right;display:flex;gap:6px}header .page-tabs a{float:none;display:inline-block;margin:0;padding:7px 14px;border:1px solid #4d627d;border-radius:5px;color:#fff;font-weight:650;text-decoration:none}header .page-tabs a:hover{background:#314762}header .page-tabs a[aria-current=page]{background:#18364b;border-color:var(--accent)}@media(max-width:600px){.page-tabs{float:none;margin-bottom:16px}}

.opening-settings{border:1px solid var(--line);padding:16px;margin:0 0 26px;border-radius:8px}.opening-settings legend{padding:0 8px}.opening-options{display:flex;gap:12px;flex-wrap:wrap}.opening-options label{flex:1 1 260px;justify-content:flex-start;align-items:flex-start;padding:14px;border:1px solid var(--line);border-radius:6px;cursor:pointer}.opening-options label:has(input:checked){border-color:var(--accent);background:#18364b}.opening-options small{display:block;margin-top:6px}.opening-settings>label{flex-wrap:wrap;justify-content:flex-start}.opening-settings select{max-width:100%}

.seed-row,.history-filters{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.seed-row{justify-content:space-between}.seed-row label{margin:0}.config-grid small{display:block;margin:0 0 14px}.history-filters{margin:14px 0}.history-filters select{max-width:360px}#lab-live{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;margin:16px 0}.live-game{padding:14px;border:1px solid var(--line);border-radius:6px;background:#182b3d}.live-game strong,.live-game span{display:block}.live-game strong{color:#fff}#lab-pace{font-weight:600;color:var(--accent)}#lab-results:focus{outline:2px solid var(--accent);outline-offset:3px}#replay-offers{white-space:pre-line}#replay-turn{max-width:300px;margin:14px 0}

body.reviewing{overflow:hidden}.replay-viewer{position:fixed;inset:0;z-index:100;display:flex;flex-direction:column;max-width:none;width:100%;height:100dvh;margin:0;border:0;border-radius:0;padding:10px 16px;background:#0c121c;gap:5px}.replay-viewer .section-bar{margin:0;flex-wrap:nowrap}.replay-viewer h2{font-size:17px;white-space:nowrap}.replay-tools{display:flex;gap:8px}.replay-viewer button{padding:5px 9px}.replay-viewer p{margin:0;font-size:12px}.replay-viewer details{margin:0;font-size:12px;max-height:20vh;overflow:auto}.replay-viewer .replay-controls{flex-wrap:nowrap;overflow-x:auto;flex-shrink:0;font-size:12px}.replay-viewer select{font-size:12px;padding:4px}.replay-viewer #replay-turn{margin:0;max-width:170px}.replay-viewer #replay-seek{margin:0;flex-shrink:0}.replay-viewer #replay-canvas{flex:1;min-height:0;width:100%;height:0;border:1px solid var(--line);cursor:crosshair}.replay-viewer #replay-hover{min-height:18px}.replay-viewer #replay-detail{white-space:nowrap;overflow:auto}.replay-viewer #replay-offers{padding:8px}#lab-saved{font-size:13px;color:#b8e8ca}@media(max-width:650px){.replay-viewer{padding:6px}.replay-viewer .section-bar{flex-wrap:wrap;gap:4px}.replay-tools button{font-size:11px}.replay-viewer h2{font-size:14px;overflow:auto}}