:root {
  color-scheme: dark;
  --bg: #05070b;
  --panel: #0b1018;
  --panel2: #111825;
  --line: #233044;
  --gold: #f2c45c;
  --gold2: #a97b24;
  --text: #f5f7fb;
  --muted: #9aa7b7;
  --danger: #ff5e68;
  --green: #49d17d;
  --square-light: #cdbd9a;
  --square-dark: #5f4b39;
  --select: #ffe36f;
  --legal: rgba(33, 210, 128, .52);
  --last: rgba(242, 196, 92, .30);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(circle at 20% -10%,#17233a 0,transparent 30%),var(--bg);color:var(--text);min-height:100vh}
button,input,select{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.45}
.app-shell{width:min(1500px,96vw);margin:0 auto;padding:24px 0 36px}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding-bottom:18px;margin-bottom:22px}
.eyebrow{font-size:.72rem;letter-spacing:.23em;color:var(--gold);font-weight:800}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(1.65rem,3vw,2.6rem);margin:.3rem 0 .35rem}.subhead{color:var(--muted);margin:0}
.engine-badge{display:flex;align-items:center;gap:9px;border:1px solid var(--line);background:#080c13;padding:10px 14px;border-radius:999px;font-size:.75rem;font-weight:800;letter-spacing:.08em;white-space:nowrap}.status-dot{width:9px;height:9px;border-radius:50%;background:#667085;box-shadow:0 0 0 4px rgba(102,112,133,.12)}.status-dot.ready{background:var(--green);box-shadow:0 0 0 4px rgba(73,209,125,.12)}.status-dot.busy{background:var(--gold);box-shadow:0 0 0 4px rgba(242,196,92,.13)}.status-dot.error{background:var(--danger)}
.layout{display:grid;grid-template-columns:minmax(520px,1.3fr) minmax(330px,.7fr);gap:22px;align-items:start}.board-column{min-width:0}.side-panel{display:grid;gap:16px;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto;padding-right:2px}
.score-strip{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center;margin-bottom:12px}.player-card{display:flex;align-items:center;gap:10px;background:linear-gradient(180deg,#101725,#0b1018);border:1px solid var(--line);border-radius:12px;padding:10px}.avatar{width:38px;height:38px;border-radius:9px;display:grid;place-items:center;background:#181f2b;border:1px solid #334057;color:var(--gold);font-weight:900}.player-card>div:nth-child(2){display:flex;flex-direction:column;min-width:0}.player-card strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.player-card span{font-size:.68rem;color:var(--muted);letter-spacing:.1em}.clock{margin-left:auto!important;font-variant-numeric:tabular-nums;font-size:1.4rem;font-weight:900;color:var(--text)}.clock.low{color:var(--danger)}.test-id{font-size:.68rem;color:var(--muted);letter-spacing:.12em;text-align:center}
.board-frame{position:relative;width:min(82vh,100%);max-width:820px;aspect-ratio:1/1;margin:0 auto;border:2px solid #354157;box-shadow:0 25px 70px rgba(0,0,0,.45),0 0 0 1px rgba(242,196,92,.12);border-radius:14px;overflow:hidden;background:#111;container-type:inline-size}.chess-board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));grid-template-rows:repeat(8,minmax(0,1fr));width:100%;height:100%;min-width:0;min-height:0;user-select:none}.square{position:relative;display:grid;place-items:center;min-width:0;min-height:0;overflow:hidden;font-size:10.6cqw;line-height:1}.square.light{background:var(--square-light)}.square.dark{background:var(--square-dark)}.square.selected{box-shadow:inset 0 0 0 5px var(--select)}.square.last{box-shadow:inset 0 0 0 999px var(--last)}.square.selected.last{box-shadow:inset 0 0 0 5px var(--select),inset 0 0 0 999px var(--last)}.square.legal::after{content:"";width:22%;height:22%;border-radius:50%;background:var(--legal);position:absolute}.square.capture::after{content:"";position:absolute;inset:7%;border:5px solid rgba(33,210,128,.55);border-radius:50%}.piece{z-index:2;filter:drop-shadow(0 2px 1px rgba(0,0,0,.38));cursor:grab}.piece:active{cursor:grabbing}.coord-file,.coord-rank{position:absolute;z-index:3;font-size:clamp(.45rem,1.2vw,.7rem);font-weight:900;pointer-events:none;opacity:.82}.coord-file{right:4px;bottom:2px}.coord-rank{left:4px;top:2px}.square.light .coord-file,.square.light .coord-rank{color:#5f4b39}.square.dark .coord-file,.square.dark .coord-rank{color:#d9c9a5}.in-check{animation:checkPulse 1s infinite alternate}@keyframes checkPulse{from{box-shadow:inset 0 0 0 999px rgba(255,40,55,.25)}to{box-shadow:inset 0 0 0 999px rgba(255,40,55,.58)}}
.board-lock{position:absolute;inset:0;background:rgba(2,5,9,.82);backdrop-filter:blur(6px);display:grid;place-items:center;z-index:5}.board-lock.hidden{display:none}.lock-card{text-align:center;border:1px solid var(--line);background:rgba(8,12,18,.94);padding:26px 30px;border-radius:16px;display:grid;gap:8px;max-width:330px}.lock-icon{font-size:3rem;color:var(--gold)}.lock-card span{color:var(--muted);font-size:.88rem}
.match-message{min-height:46px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);font-weight:700;padding:10px}.controls-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}button{border:1px solid transparent;border-radius:9px;padding:11px 15px;font-weight:900;letter-spacing:.035em}.primary{background:linear-gradient(180deg,#ffd879,#d99e30);color:#14100a;border-color:#ffdd82}.secondary{background:#101826;color:var(--text);border-color:#314057}.danger{background:#2a1117;color:#ff9ca2;border-color:#642530}.wide{width:100%}
.panel{background:linear-gradient(180deg,rgba(17,24,37,.96),rgba(9,14,22,.96));border:1px solid var(--line);border-radius:14px;padding:16px;box-shadow:0 16px 38px rgba(0,0,0,.16)}.panel-title-row{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.panel h2,.panel h3{margin:0;font-size:1rem}.panel-title-row>span{font-size:.69rem;color:var(--muted)}.locked-pill{border:1px solid #5a4622;padding:4px 7px;border-radius:999px;color:var(--gold)!important;background:#1a150c;font-weight:900;letter-spacing:.08em}
label{display:grid;gap:6px;color:var(--muted);font-size:.78rem;font-weight:700;margin-bottom:12px}input,select{width:100%;border:1px solid #2d394d;background:#070b12;color:var(--text);border-radius:8px;padding:10px 11px;outline:none}input:focus,select:focus{border-color:var(--gold2);box-shadow:0 0 0 3px rgba(242,196,92,.08)}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:10px}.integrity-box{border:1px solid #1f2b3c;background:#080d15;border-radius:10px;padding:8px 10px;margin-bottom:12px}.integrity-row{display:flex;justify-content:space-between;gap:12px;padding:5px 0;font-size:.75rem}.integrity-row span{color:var(--muted)}.integrity-row strong{text-align:right}.tiny-note{font-size:.7rem;line-height:1.45;color:var(--muted);margin:10px 0 0}
.moves-list{max-height:250px;overflow:auto;font-variant-numeric:tabular-nums}.move-row{display:grid;grid-template-columns:34px 1fr 1fr;gap:8px;padding:6px;border-bottom:1px solid #172234;font-size:.8rem}.move-row .num{color:#708095}.move-row .white,.move-row .black{font-weight:800}.empty-state,.empty-cell{text-align:center;color:#657386;padding:18px 8px!important}.eval-lock{display:grid;place-items:center;text-align:center;gap:4px;padding:12px}.eval-lock .shield{color:var(--gold);font-size:1.6rem}.eval-lock span{font-size:.75rem;color:var(--muted);max-width:270px}
.report-section{margin-top:28px;border-top:1px solid var(--line);padding-top:26px}.hidden{display:none!important}.report-header{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin-bottom:18px}.report-header h2{font-size:1.7rem;margin:.25rem 0}.report-header p{margin:0;color:var(--muted)}.report-actions{display:flex;gap:8px;flex-wrap:wrap}.analysis-progress{display:flex;align-items:center;gap:12px;margin:12px 0 18px}.progress-track{height:9px;background:#131d2b;border-radius:999px;overflow:hidden;flex:1;border:1px solid #26364d}.progress-bar{height:100%;width:0;background:linear-gradient(90deg,#c58f31,#ffe28a);transition:width .2s}.analysis-progress span{font-size:.75rem;color:var(--muted);min-width:170px;text-align:right}.metric-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:14px}.metric{background:#0b111a;border:1px solid var(--line);border-radius:11px;padding:13px;display:grid;gap:3px}.metric span{color:var(--muted);font-size:.7rem;text-transform:uppercase;letter-spacing:.09em}.metric strong{font-size:1.45rem}.report-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.report-text{color:#c4ccd7;font-size:.82rem;line-height:1.6;margin-top:12px}.report-text .kv{display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid #172234;padding:5px 0}.report-text .kv span{color:var(--muted)}.summary-callout{border-left:3px solid var(--gold);padding:8px 10px;background:#12100b;margin-bottom:10px}.table-wrap{overflow:auto;margin-top:10px}table{border-collapse:collapse;width:100%;min-width:760px;font-size:.78rem}th,td{padding:9px 8px;border-bottom:1px solid #1c293b;text-align:left}th{color:#9cacbf;font-size:.68rem;text-transform:uppercase;letter-spacing:.08em;background:#0a1018;position:sticky;top:0}.grade-best{color:#67e49a}.grade-good{color:#b4e56a}.grade-inaccuracy{color:#ffd66a}.grade-mistake{color:#ff9d55}.grade-blunder{color:#ff636d;font-weight:900}
footer{display:flex;justify-content:space-between;gap:12px;color:#5f6c7e;font-size:.7rem;padding-top:26px}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.72);display:grid;place-items:center;z-index:30}.modal-card{background:#0d1420;border:1px solid var(--line);border-radius:14px;padding:22px;box-shadow:0 30px 80px rgba(0,0,0,.5)}.modal-card h3{text-align:center}.promotion-grid{display:grid;grid-template-columns:repeat(4,70px);gap:8px}.promotion-grid button{font-size:2.6rem;padding:10px;background:#192232;color:white;border-color:#39475d}
@media(max-width:1050px){.layout{grid-template-columns:1fr}.side-panel{position:static;max-height:none;grid-template-columns:repeat(2,1fr);overflow:visible}.setup-panel{grid-row:span 2}.metric-grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.app-shell{width:100%;padding:12px}.topbar{align-items:flex-start;flex-direction:column}.score-strip{grid-template-columns:1fr 1fr}.test-id{grid-column:1/-1;grid-row:2}.player-card{padding:7px}.clock{font-size:1.05rem}.board-frame{width:100%}.side-panel{grid-template-columns:1fr}.setup-panel{grid-row:auto}.two-col{grid-template-columns:1fr}.metric-grid{grid-template-columns:repeat(2,1fr)}.report-header{align-items:flex-start;flex-direction:column}.report-grid{grid-template-columns:1fr}footer{flex-direction:column}.promotion-grid{grid-template-columns:repeat(4,58px)}}

@supports not (font-size: 1cqw){.square{font-size:clamp(2rem,5.2vw,5.2rem)}}

.public-version {
  display: inline-flex;
  margin-top: 6px;
  padding: 4px 8px;
  border: 1px solid rgba(245, 187, 54, 0.35);
  border-radius: 999px;
  color: var(--gold);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
}