/* ChessBench — tournament monitor.
   Identity: the DGT tournament clock / crosstable. Warm ink ground, hairline
   rules, bone type, red lamp. One signature: the running clock. Everything
   else stays quiet. */

:root {
  --bg: #0d0c0b;
  --panel: #131211;
  --panel-2: #181715;
  --line: #262321;
  --line-strong: #3d3934;
  --ink: #e9e6df;
  --ink-2: #9d968a;
  --ink-3: #6c655a;
  --red: #e5484d;
  --red-dim: rgba(229, 72, 77, 0.14);
  --amber: #f2a93b;
  --mint: #5aab82;
  --font-display: "Bodoni Moda", Georgia, serif;
  --font-body: "Inter Tight", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--red); color: #fff; }
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--line-strong); border: 3px solid var(--bg); border-radius: 6px; }

/* ---------- masthead ---------- */
.masthead {
  border-top: 2px solid var(--red);
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 20;
}
.masthead-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 18px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.wordmark { display: flex; align-items: center; gap: 14px; }
.wordmark-glyph {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  font-size: 22px;
  color: var(--ink);
  border: 1px solid var(--line-strong);
  background: var(--panel);
}
.wordmark h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 600;
  letter-spacing: 0.01em;
}
.wordmark-live {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--red);
  vertical-align: 3px;
  margin-left: 6px;
}
.wordmark-sub { margin: 1px 0 0; font-size: 11.5px; color: var(--ink-3); letter-spacing: 0.02em; }

.masthead-right { display: flex; align-items: center; gap: 22px; }

.lamp {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
}
.lamp-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink-3); }
.lamp.live { color: var(--red); }
.lamp.live .lamp-dot { background: var(--red); box-shadow: 0 0 6px rgba(229,72,77,0.7); }
.lamp.stale { color: var(--amber); }
.lamp.stale .lamp-dot { background: var(--amber); }
.lamp.error { color: var(--red); }
.lamp.error .lamp-dot { background: var(--red); }

/* the signature: a tournament clock */
.clock-face {
  display: flex; align-items: baseline; gap: 10px;
  padding: 6px 14px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.clock-caption {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.clock-digits {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  min-width: 108px;
  text-align: right;
}
.clock-face.running { border-color: rgba(229,72,77,0.45); }
.clock-face.running .clock-digits { color: var(--red); }

.square-btn {
  width: 40px; height: 40px;
  display: grid; place-items: center;
  font-size: 16px;
  color: var(--ink-2);
  background: var(--panel);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.square-btn:hover { color: var(--ink); border-color: var(--line-strong); }

/* ---------- sheet ---------- */
.sheet { max-width: 1200px; margin: 0 auto; padding: 26px 28px 70px; }

/* ---------- no-signal notice ---------- */
.notice {
  display: flex; align-items: center; gap: 22px;
  padding: 30px 28px;
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: 26px;
}
.notice[hidden] { display: none; }
.notice-mark {
  font-size: 34px; color: var(--ink-3);
  border: 1px solid var(--line);
  width: 64px; height: 64px;
  display: grid; place-items: center;
  flex-shrink: 0;
}
.notice h2 { margin: 0 0 6px; font-family: var(--font-display); font-size: 19px; font-weight: 600; }
.notice p { margin: 0 0 8px; color: var(--ink-2); font-size: 13.5px; line-height: 1.55; max-width: 52ch; }
.notice .mono { font-family: var(--font-mono); font-size: 12px; color: var(--ink); }
.notice-meta { font-family: var(--font-mono); font-size: 11px !important; color: var(--ink-3) !important; margin: 0 !important; }
.notice-meta a { color: var(--ink-2); text-decoration: underline; text-underline-offset: 3px; }
.notice.error { border-color: rgba(229, 72, 77, 0.5); }
.notice.error .notice-mark { border-color: rgba(229,72,77,0.5); color: var(--red); }

/* ---------- scoreboard ---------- */
.scoreboard {
  display: grid;
  grid-template-columns: 1.1fr 1.5fr repeat(5, 1fr);
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: 26px;
}
@media (max-width: 980px) { .scoreboard { grid-template-columns: 1fr 1fr; } }
.sb-cell {
  padding: 14px 16px;
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 3px;
  min-width: 0;
}
.sb-cell:last-child { border-right: none; }
@media (max-width: 980px) { .sb-cell { border-bottom: 1px solid var(--line); } }
.sb-wide { grid-row: span 2; }
.sb-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.sb-value {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 500;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}
.sb-value.sb-big { font-size: 34px; }
.sb-sub { font-size: 11px; color: var(--ink-3); }
.now-line {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  color: var(--red);
  margin-top: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.now-line::before { content: "● "; font-size: 8px; }
.now-line[hidden] { display: none; }
.rule-track {
  margin-top: auto;
  height: 2px;
  background: var(--line);
  position: relative;
  overflow: hidden;
}
.rule-fill {
  position: absolute; inset: 0;
  width: 0%;
  background: var(--red);
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---------- error line ---------- */
.error-line {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  margin-bottom: 26px;
  border: 1px solid rgba(229, 72, 77, 0.4);
  color: var(--ink-2);
  font-size: 13px;
}
.error-line[hidden] { display: none; }
.error-tag {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--red);
  border: 1px solid rgba(229,72,77,0.4);
  padding: 2px 8px;
}

/* ---------- boards / sections ---------- */
.board {
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: 26px;
}
.board-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  gap: 18px;
}
.board-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
}
.board-head-copy { min-width: 0; }
.live-now {
  margin: 3px 0 0;
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.04em;
  overflow-wrap: anywhere;
}
.live-sync,
.live-generation-note,
.live-integrity {
  margin: 4px 0 0;
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}
.live-sync.warn { color: var(--amber); }
.live-sync.error,
.live-integrity.error { color: var(--red); }
.live-sync.ok,
.live-integrity.ok { color: var(--mint); }
.live-integrity[hidden] { display: none; }
.board-note {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* entrants */
.entrants { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.entrant {
  padding: 13px 18px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 24px 1fr auto;
  gap: 10px;
  align-items: center;
}
.entrant:last-child { border-right: none; }
.entrant-rank { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); }
.entrant-name { font-family: var(--font-mono); font-size: 12px; font-weight: 500; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.entrant-mark { font-size: 11px; color: var(--ink-3); }
.entrant.done .entrant-mark { color: var(--mint); }
.entrant:hover { background: var(--panel-2); }
.entrant-prog {
  grid-column: 2 / 4;
  height: 2px;
  background: var(--line);
  margin-top: -4px;
  position: relative;
}
.entrant-prog::after {
  content: ""; position: absolute; inset: 0;
  width: var(--p, 0%);
  background: var(--red);
  transition: width 0.5s ease;
}

/* ---------- charts ---------- */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-bottom: 26px; }
@media (max-width: 980px) { .charts { grid-template-columns: 1fr; } }
.chart-figure { margin: 0; }
.chart-span2 { grid-column: 1 / -1; }
.chart-figure figcaption {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 600;
  padding: 0 2px 10px;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.fig-note {
  font-family: var(--font-mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-weight: 400;
}
.chart-box {
  position: relative;
  height: 240px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 10px 12px 6px;
}
.chart-status {
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 8px;
  margin: 0;
  padding: 5px 7px;
  border-left: 2px solid var(--line-strong);
  background: rgba(13, 12, 11, 0.86);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
}

/* ---------- live board ---------- */
.live-panel { overflow: hidden; }
.live-grid {
  display: grid;
  grid-template-columns: minmax(300px, 400px) 1fr;
  gap: 22px;
  padding: 20px 22px;
  min-width: 0;
}
@media (max-width: 980px) { .live-grid { grid-template-columns: 1fr; } }

.live-board-wrap { display: flex; flex-direction: column; gap: 8px; align-items: stretch; min-width: 0; }
.board-stage {
  display: grid;
  gap: 0;
  border: 3px solid var(--line-strong);
  outline: 1px solid rgba(0, 0, 0, 0.5);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.45);
  width: 100%;
  aspect-ratio: 1;
  min-width: 0;
  max-width: 100%;
  user-select: none;
  background: var(--line-strong);
}
.board-cell {
  position: relative;
  display: grid; place-items: center;
}
.board-cell.light { background: #f0d9b5; }
.board-cell.dark { background: #b58863; }
.board-empty {
  display: grid;
  place-items: center;
  padding: 28px;
  background: var(--panel-2);
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  text-align: center;
}

/* pieces: lichess cburnett SVG set — crisp vectors, lichess look */
.piece-svg { display: grid; place-items: center; width: 100%; height: 100%; z-index: 1; }
.piece-svg svg {
  width: 84%;
  height: 84%;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.35));
  transition: transform 0.12s ease;
}
.board-cell:hover .piece-svg svg { transform: scale(1.08); }

/* last move + verdict highlights */
.board-cell.last-move { background-color: rgba(246, 196, 64, 0.42); background-blend-mode: multiply; }
.board-cell.hl-to-correct::after, .board-cell.hl-to-wrong::after {
  content: ""; position: absolute; inset: 2px;
  border: 2px solid transparent; pointer-events: none;
}
.board-cell.hl-to-correct::after { border-color: var(--mint); box-shadow: inset 0 0 0 1px rgba(90,171,130,0.4); }
.board-cell.hl-to-wrong::after { border-color: var(--red); box-shadow: inset 0 0 0 1px rgba(229,72,77,0.4); }

/* coordinate labels */
.board-coord {
  position: absolute;
  font-family: var(--font-mono);
  font-size: clamp(8px, 1.4vw, 11px);
  font-weight: 600;
  line-height: 1;
  z-index: 2;
  pointer-events: none;
}
.board-coord.rank { top: 3px; left: 4px; }
.board-coord.file { bottom: 2px; right: 4px; }
.board-cell.light .board-coord { color: #8a6b45; }
.board-cell.dark .board-coord { color: #f0d9b5; }

.live-caption { font-family: var(--font-mono); font-size: 11px; color: var(--ink-3); letter-spacing: 0.04em; }

.live-side { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.live-block { display: flex; flex-direction: column; gap: 6px; }
.live-label {
  font-family: var(--font-mono);
  font-size: 9px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-3);
  display: flex; align-items: center; gap: 8px;
}
.live-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); }
.live-dot.on { background: var(--red); box-shadow: 0 0 6px rgba(229,72,77,0.8); }

.thinking-block { min-height: 0; }
.live-thinking {
  margin: 0;
  padding: 12px 14px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 260px;
  overflow-y: auto;
}
.live-thinking.thinking::after { content: "▍"; color: var(--red); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.live-prompt {
  margin: 0;
  padding: 12px 14px;
  background: #100f0e;
  border: 1px solid var(--line);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  max-height: 210px;
  overflow-y: auto;
}
.live-comparison { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.live-result {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
}
.model-result { border-color: rgba(229, 72, 77, 0.28); }
.reference-result { border-color: rgba(242, 169, 59, 0.28); }
.live-move {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-size: 15px;
  color: var(--ink);
  min-height: 42px;
}
.live-move.empty { color: var(--ink-3); }
.result-note {
  color: var(--ink-3);
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.live-verdict {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--line);
}
.live-verdict[hidden] { display: none; }
.live-verdict strong { font-weight: 500; }
.live-verdict span { color: var(--ink-3); font-size: 11px; letter-spacing: 0; text-transform: none; }
.live-verdict.correct { color: var(--mint); border-color: rgba(90,171,130,0.45); background: rgba(90,171,130,0.08); }
.live-verdict.wrong { color: var(--red); border-color: rgba(229,72,77,0.5); background: rgba(229,72,77,0.08); }
.live-verdict.neutral { color: var(--amber); border-color: rgba(242,169,59,0.4); background: rgba(242,169,59,0.06); }
.live-verdict .v-note { text-transform: none; letter-spacing: 0; color: var(--ink-3); font-size: 11px; }

.live-replay {
  display: flex; gap: 8px;
  padding: 14px 22px;
  border-top: 1px solid var(--line);
  overflow-x: auto;
  align-items: center;
}
.replay-chip {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
}
.replay-chip:hover { border-color: var(--line-strong); color: var(--ink); }
.replay-chip .r-mark { font-size: 10px; }
.replay-chip .r-mark.correct { color: var(--mint); }
.replay-chip .r-mark.wrong { color: var(--red); }
.replay-chip .r-mark.neutral { color: var(--amber); }
.replay-chip.active { border-color: var(--red); color: var(--ink); }

/* ---------- table ---------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 9.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 10px 14px;
  border-bottom: 2px solid var(--line-strong);
  white-space: nowrap;
}
thead th.num, td.num { text-align: right; }
tbody td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  font-size: 12.5px;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--panel-2); }
td.mono, .mono { font-family: var(--font-mono); }
.pos { color: var(--mint); }
.neg { color: var(--red); }
.warn { color: var(--amber); }
.dim { color: var(--ink-3); }
.empty { text-align: center; color: var(--ink-3); padding: 34px; font-style: italic; font-family: var(--font-body); }
.cell-done { color: var(--mint); font-size: 11px; }
.cell-done::before { content: "●"; margin-right: 6px; font-size: 8px; }

/* ---------- footer ---------- */
.footline {
  max-width: 1200px; margin: 0 auto; padding: 0 28px 46px;
  color: var(--ink-3); font-size: 12px;
  display: flex; gap: 8px; flex-wrap: wrap; align-items: center;
  font-family: var(--font-mono);
}
.footline a { color: var(--ink-2); text-decoration: none; }
.footline a:hover { color: var(--ink); }
.foot-sep { opacity: 0.5; }

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .rule-fill { transition: none; }
  * { animation: none !important; }
}

/* ---------- focus visibility ---------- */
.square-btn:focus-visible, .replay-chip:focus-visible, a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

/* ---------- responsive ---------- */
@media (max-width: 980px) {
  .masthead-inner { flex-wrap: wrap; row-gap: 12px; }
  .scoreboard { grid-template-columns: 1fr 1fr; }
  .sb-cell { border-bottom: 1px solid var(--line); }
  .charts { grid-template-columns: 1fr; }
  .chart-span2 { grid-column: 1; }
}
@media (max-width: 560px) {
  .masthead-inner { padding: 14px 16px; }
  .sheet { padding: 18px 14px 50px; }
  .masthead-right { gap: 12px; }
  .clock-caption { display: none; }
  .clock-digits { font-size: 18px; min-width: 92px; }
  .lamp { font-size: 10px; }
  .scoreboard { grid-template-columns: 1fr; }
  .sb-cell { border-right: none; }
  .sb-value.sb-big { font-size: 30px; }
  .board-head { padding: 10px 14px; }
  .board-head { align-items: flex-start; }
  .board-note { max-width: 48%; text-align: right; overflow-wrap: anywhere; }
  .live-comparison { grid-template-columns: 1fr; }
  .footline { padding: 0 16px 36px; }
}