:root {
  --paper: #f7f8fa;
  --surface: #ffffff;
  --surface-hover: #edf0f3;
  --ink: #202a35;
  --muted: #596674;
  --accent: #1d6b45;
  --accent-hover: #155334;
  --accent-shadow: #103e28;
  --danger: #b42318;
  --danger-hover: #911b13;
  --player-one: #3f705f;
  --player-two: #b64f4f;
  --player-one-goal: #dfebe5;
  --player-two-goal: #f2dddd;
  --cell: #e1e5e8;
  --control-border: #d3dbe2;
  --active-player-color: var(--player-one);
  --board-gap: 6px;

  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

.board-row { display: contents; }

.confirm-dialog {
  width: min(400px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  overflow: auto;
  padding: 32px 24px 24px;
  border: 1px solid var(--control-border);
  border-radius: 12px;
  background: var(--surface);
  color: var(--ink);
}
.confirm-dialog::backdrop { background: #14202b80; }
.confirm-dialog h2 { margin: 0 0 12px; font-size: 22px; }
.confirm-dialog p { margin: 0 0 24px; font-size: 14px; line-height: 1.6; color: var(--muted); }
.confirm-actions { display: flex; gap: 10px; }
.confirm-actions button { flex: 1; min-height: 48px; padding: 10px 12px; border: 1px solid var(--control-border); border-radius: 7px; background: var(--surface); color: var(--ink); font: 500 14px Arial, sans-serif; cursor: pointer; touch-action: manipulation; }
.confirm-actions .danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.confirm-actions .danger:hover { background: var(--danger-hover); }

[hidden] { display: none !important; }

body {
  margin: 0;
}

body[data-player="2"] {
  --active-player-color: var(--player-two);
}

main {
  width: min(520px, calc(100% - 40px));
  margin: 36px auto 24px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}

h1 {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.7px;
  margin: 0;
}

h1 span {
  color: var(--muted);
  font-weight: 400;
}

.size {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 1px;
}

.game-meta { display: grid; gap: 6px; justify-items: end; }
.spectator-count { display: inline-flex; align-items: center; gap: 5px; color: var(--muted); font-size: 11px; white-space: nowrap; }
.spectator-count svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.6; }

#watch-return { color: var(--muted); font-size: 11px; }

#board {
  width: 100%;
  aspect-ratio: 1;
  display: grid;
  grid-template-columns: repeat(var(--board-size, 11), minmax(0, 1fr));
  grid-template-rows: repeat(var(--board-size, 11), minmax(0, 1fr));
  gap: var(--board-gap);
  position: relative;
  background: var(--paper);
  touch-action: none;
}

.board-frame {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) 18px;
  grid-template-rows: 18px auto 18px;
  gap: 5px;
}
.board-frame #board { grid-area: 2 / 2; }
.board-files, .board-ranks {
  display: grid;
  gap: var(--board-gap);
  color: var(--muted);
  font-size: 10px;
  text-align: center;
  align-items: center;
  user-select: none;
}
.board-files { grid-template-columns: repeat(11, minmax(0, 1fr)); }
.board-ranks { grid-template-rows: repeat(11, minmax(0, 1fr)); }
.files-top { grid-area: 1 / 2; }
.files-bottom { grid-area: 3 / 2; }
.ranks-left { grid-area: 2 / 1; }
.ranks-right { grid-area: 2 / 3; }
.cell.last-move { box-shadow: inset 0 0 0 2px var(--ink); }
.wall.last-move { outline: 2px solid var(--ink); outline-offset: 1px; }

.replay-panel {
  margin-top: 20px;
  padding: 16px;
  border: 1px solid var(--control-border);
  border-radius: 10px;
  background: var(--surface);
}
.replay-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.replay-heading h2 { margin: 0; font-size: 18px; }
.replay-heading a { color: var(--muted); font-size: 12px; }
#replay-position { font-size: 13px; }
.replay-controls { display: flex; gap: 8px; }
.replay-controls button, .replay-moves button {
  border: 1px solid var(--control-border);
  background: var(--surface);
  color: var(--ink);
  border-radius: 6px;
  padding: 9px;
  cursor: pointer;
  font: inherit;
  font-size: 12px;
}
.replay-controls button:disabled { opacity: 0.4; cursor: default; }
#replay-range { width: 100%; margin: 18px 0; accent-color: var(--accent); }
.replay-moves {
  position: relative;
  display: flex;
  flex-wrap: nowrap;
  gap: 2px;
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-x: auto;
}
.replay-moves li { flex: 0 0 auto; }
.replay-moves button, .recent-move { display: inline-flex; align-items: baseline; gap: 2px; padding: 1px 3px; border: 1px solid transparent; border-radius: 2px; font-size: 12px; line-height: 14px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.replay-moves button { background: rgb(63 112 95 / 12%); }
.replay-moves button.p2, .replay-moves button.p4 { background: rgb(182 79 79 / 12%); }
.replay-moves button strong { font-size: 12px; font-weight: 500; }
.replay-moves button[aria-current="step"] { border-color: var(--ink); }
.notation-hint { font-size: 11px; color: var(--muted); }

.clocks {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.recent-moves-panel { margin-top: 16px; }
.recent-moves-panel h2 { color: var(--muted); font-size: 11px; font-weight: 400; margin: 0 0 8px; }
.recent-moves { display: flex; flex-wrap: nowrap; gap: 2px; overflow-x: auto; list-style: none; margin: 0; padding: 0; }
.recent-move { flex: 0 0 auto; background: rgb(63 112 95 / 12%); }
.recent-move.p2, .recent-move.p4 { background: rgb(182 79 79 / 12%); }
.move-number { color: var(--muted); font-size: 75%; line-height: 1; }
.recent-move strong { font-size: 12px; font-weight: 500; font-variant-numeric: tabular-nums; }

.player-clock {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px;
  border: 1px solid var(--control-border);
  border-radius: 8px;
  background: var(--surface);
}

.player-clock span {
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}

.clock-details { display: grid; gap: 5px; min-width: 0; }
.player-clock .clock-player { color: var(--ink); }
.clock-walls { display: flex; align-items: center; gap: 7px; }
.clock-walls::before {
  content: "";
  width: 9px;
  height: 9px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--player-one);
}
.p2 .clock-walls::before, .p4 .clock-walls::before { background: var(--player-two); }

.player-clock strong {
  font-size: clamp(20px, 5vw, 28px);
  font-variant-numeric: tabular-nums;
}

.player-clock.p1.active, .player-clock.p3.active { border-color: var(--player-one); }
.player-clock.p2.active, .player-clock.p4.active { border-color: var(--player-two); }
.player-clock.active { box-shadow: 0 0 0 1px currentColor; }
.player-clock.low strong { color: var(--danger); }

.cell {
  background: var(--cell);
  border-radius: 3px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 0;
  min-height: 0;
  cursor: default;
}

.cell.goal-p1 {
  background: var(--player-one-goal);
}

.cell.goal-p2 {
  background: var(--player-two-goal);
}

.cell.legal {
  cursor: pointer;
}

.cell.legal::after {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--active-player-color);
  opacity: 0.75;
}

.cell.legal:hover {
  background: #d2dbe2;
}

.cell.goal-p1.legal:hover {
  background: #ccdfd4;
}

.cell.goal-p2.legal:hover {
  background: #e8cdbb;
}

.p1, .p3 {
  --piece-color: var(--player-one);
}

.p2, .p4 {
  --piece-color: var(--player-two);
}

.pawn {
  width: 48%;
  height: 48%;
  background: var(--piece-color);
  border-radius: 50%;
  box-shadow: inset 0 0 0 3px #ffffff26;
}

.wall {
  position: absolute;
  background: var(--piece-color);
  z-index: 2;
  border-radius: 0;
  pointer-events: none;
}

.wall.preview {
  opacity: 0.8;
}

.wall.preview.bad {
  background: var(--danger);
}

.tools {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 25px;
}

.tools button {
  width: 66px;
  height: 56px;
  border: 1px solid var(--control-border);
  border-radius: 9px;
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: grab;
  touch-action: none;
  color: inherit;
  transition:
    background 0.15s,
    border-color 0.15s;
}

.tools button:hover,
.tools button[aria-pressed="true"] {
  background: var(--surface);
  border-color: var(--active-player-color);
}

.tools button:active {
  cursor: grabbing;
}

.tools button:disabled {
  opacity: 0.3;
  cursor: default;
}

.sample {
  display: block;
  background: var(--active-player-color);
  border-radius: 0;
  pointer-events: none;
}

.sample.horizontal {
  width: 34px;
  height: 6px;
}

.sample.vertical {
  width: 6px;
  height: 34px;
}

#status {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  text-align: center;
  margin: 17px 0;
  min-height: 19px;
}

.game-actions {
  text-align: center;
}

#resign {
  border: 1px solid var(--danger-hover);
  border-radius: 6px;
  padding: 9px 22px;
  background: var(--danger);
  color: #ffffff;
  font: inherit;
  font-size: 11px;
  cursor: pointer;
}

#resign:hover {
  background: var(--danger-hover);
}

#resign:focus-visible {
  outline-color: var(--danger);
}

button:focus-visible,
.cell:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

body.dragging {
  cursor: grabbing;
  user-select: none;
}

@media (max-width: 560px) {
  main {
    margin-top: 24px;
    width: calc(100% - 32px);
  }

  header {
    margin-bottom: 27px;
  }

  h1 {
    font-size: 18px;
  }

  .tools {
    margin-top: 22px;
  }
}

@media (min-height: 850px) {
  main {
    margin-top: 65px;
  }
}

.board-brand {
  color: inherit;
  text-decoration: none;
}

#resign:disabled {
  opacity: 0.4;
  cursor: default;
}

.pawn { display: flex; align-items: center; justify-content: center; font-size: 11px; color: white; font-weight: 600; }
.pawn.finished { outline: 2px solid var(--piece-color); outline-offset: 2px; }

/* During a match, player resources and the board take precedence over chrome. */
.game-page { --game-hud-height: 196px; padding-top: env(safe-area-inset-top); padding-bottom: env(safe-area-inset-bottom); }
.game-page[data-player-count="4"] { --game-hud-height: 264px; }
.game-page main { width: min(980px, calc(100% - max(12px, env(safe-area-inset-left)) - max(12px, env(safe-area-inset-right)))); margin: 8px auto 16px; }
.game-page header { margin-bottom: 8px; min-height: 20px; gap: 12px; }
.game-page h1 { font-size: 13px; letter-spacing: -0.3px; }
.game-page .game-meta { display: flex; align-items: center; gap: 10px; }
.game-page .size { font-size: 10px; letter-spacing: 0.4px; }
.game-stage { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "clocks clocks" "actions actions" "board board" "tools tools"; justify-items: center; gap: 8px; }
.ai-page .game-stage { grid-template-areas: "clocks clocks" "ai ai" "actions actions" "board board" "tools tools"; }
.ai-page .player-clock { grid-template-columns: 1fr; }
.ai-page .player-clock .clock-walls { font-size: 16px; }
.ai-controls { grid-area: ai; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; width: 100%; font-size: 12px; }
.ai-controls label { color: var(--muted); }
.ai-controls select { flex: 1; min-width: 0; }
.ai-controls select, .ai-controls button { min-height: 36px; border: 1px solid var(--control-border); border-radius: 6px; padding: 6px 8px; background: var(--surface); color: var(--ink); font: inherit; }
.player-panel { display: contents; }
.game-page .clocks { grid-area: clocks; width: 100%; margin: 0; gap: 6px; padding: 4px 0; position: sticky; top: env(safe-area-inset-top); z-index: 4; background: var(--paper); }
.game-page .player-clock {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 6px;
  row-gap: 2px;
  padding: 8px;
  border-radius: 6px;
}
.game-page .clock-details { display: contents; }
.game-page .clock-identity { grid-column: 1 / -1; display: flex; align-items: baseline; gap: 6px; min-width: 0; }
.game-page .clock-player {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  font-size: 11px;
  line-height: 14px;
}
.game-page .player-clock .clock-elo { flex-shrink: 0; color: var(--muted); font-size: 10px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.game-page .player-clock .clock-walls { color: var(--ink); font-size: 16px; font-weight: 600; gap: 5px; white-space: nowrap; }
.game-page .player-clock strong { font-size: clamp(26px, 5vw, 32px); line-height: 1.15; }
.game-page .player-clock.low strong { color: var(--danger); }
.game-page .game-actions { grid-area: actions; }
.game-page .tools { grid-area: tools; margin: 0; gap: 6px; }
.game-page .tools button { width: 48px; height: 44px; border-radius: 6px; }
.game-page .sample.horizontal { width: 28px; }
.game-page .sample.vertical { height: 28px; }
.game-page .board-frame { grid-area: board; width: min(100%, calc(100dvh - var(--game-hud-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom))); }
.game-page .recent-moves-panel { margin-top: 4px; }
.game-page .recent-moves-panel h2 { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.game-page #status { font-size: 10px; margin: 8px 0; min-height: 0; }
.game-page #resign { background: transparent; color: var(--danger); border-color: transparent; padding: 6px 10px; min-height: 44px; }
.game-page #resign:hover { border-color: var(--danger); }

@media (max-width: 759px), (max-width: 959px) and (max-height: 550px) {
  .game-page { --game-hud-height: 208px; }
  .game-page[data-player-count="4"] { --game-hud-height: 276px; }
  .game-page #resign { min-height: 26px; padding: 4px 14px; line-height: 16px; background: var(--danger); color: #ffffff; border-color: var(--danger-hover); }
  .game-page #resign:hover { background: var(--danger-hover); }
}

@media (min-width: 760px), (min-width: 640px) and (max-height: 550px) {
  .game-page main { display: grid; grid-template-columns: 200px minmax(0, 1fr); grid-template-areas: "header header" "players board" "players moves" "players replay" "players status" "players actions"; column-gap: 16px; align-items: start; }
  .game-page header { grid-area: header; }
  .game-stage { display: contents; }
  .player-panel { grid-area: players; width: 100%; display: flex; flex-direction: column; position: sticky; top: max(8px, env(safe-area-inset-top)); align-items: stretch; align-self: start; gap: 8px; }
  .game-page .recent-moves-panel { grid-area: moves; }
  .game-page .replay-panel { grid-area: replay; }
  .game-page #status { grid-area: status; }
  .game-page .game-actions { grid-area: actions; }
  .game-page .clocks { grid-template-columns: minmax(0, 1fr); position: static; }
  .game-page .tools { align-self: center; }
  .game-page .player-clock .clock-walls { font-size: 18px; }
  .game-page .player-clock strong { font-size: 32px; }
  .game-page .board-frame { width: min(100%, calc(100dvh - 84px - env(safe-area-inset-top) - env(safe-area-inset-bottom))); }
}

@media (min-width: 640px) and (max-width: 959px) and (max-height: 550px) {
  .game-page main { grid-template-areas: "header header" "players actions" "players board" "players moves" "players replay" "players status"; row-gap: 8px; }
  .game-page .game-actions { justify-self: center; }
  .game-page .board-frame { justify-self: center; width: min(100%, calc(100dvh - 118px - env(safe-area-inset-top) - env(safe-area-inset-bottom))); }
}

@media (max-height: 450px) and (min-width: 640px) {
  .game-page .player-clock { padding: 5px 8px; row-gap: 0; }
  .game-page .clock-player { line-height: 12px; font-size: 10px; }
  .game-page .player-clock strong { font-size: 26px; }
  .game-page .player-clock .clock-walls { font-size: 16px; }
  .player-panel { gap: 6px; }
  .game-page .tools button { height: 44px; }
}

#status:empty, #result-reason:empty, #rematch-status:empty, #result-error:empty { display: none; }
#result-dialog { position: fixed; margin: auto; width: min(360px, calc(100% - 32px)); box-sizing: border-box; max-height: calc(100dvh - 32px); overflow: auto; padding: 32px 24px 24px; border: 1px solid var(--border, #dde1e7); border-radius: 18px; background: var(--surface, #fff); color: var(--text, #18202b); text-align: center; }
#result-dialog::backdrop { background: rgb(15 23 42 / 48%); }
#result-title { font-size: 28px; margin: 8px 0 16px; }
.result-close { position: absolute; top: 4px; right: 4px; width: 44px; height: 44px; border: 0; background: transparent; font-size: 26px; }
.result-options { display: grid; gap: 10px; margin-top: 24px; }
.result-options button { min-height: 48px; border-radius: 9px; font-size: 16px; font-weight: 600; }
#rematch { background: #16854b; color: white; border: 1px solid #16854b; }
#result-home { border-color: transparent; background: transparent; }
#result-reason, #rematch-status { font-size: 14px; color: var(--muted); }
.result-rating { display: grid; gap: 4px; margin: 18px 0; padding: 14px; border: 1px solid var(--control-border); border-radius: 9px; font-variant-numeric: tabular-nums; }
#result-rating-label, #result-rating-values, #result-unrated { font-size: 13px; color: var(--muted); }
#result-rating-delta { font-size: 30px; line-height: 1.2; }
.rating-gain { color: var(--player-one); }
.rating-loss { color: var(--danger); }
#result-error { color: #b42318; font-size: 14px; }

.analysis-panel { min-width: 0; margin-top: 12px; padding: 16px; background: var(--surface); border: 1px solid var(--control-border); border-radius: 10px; }
.analysis-panel h2 { font-size: 18px; margin: 0; }
.analysis-panel h3 { font-size: 13px; margin: 0; font-weight: 600; }
.analysis-heading, .analysis-review-heading, .analysis-evaluation { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.analysis-toggle { display: flex; align-items: center; gap: 6px; min-height: 36px; font-size: 13px; }
.analysis-toggle input { accent-color: var(--accent); width: 17px; height: 17px; }
.analysis-settings { display: grid; grid-template-columns: 1fr 1.25fr; gap: 10px; margin: 12px 0 18px; }
.analysis-settings label { display: grid; gap: 5px; font-size: 11px; color: var(--muted); min-width: 0; }
.analysis-settings select { width: 100%; min-height: 38px; border: 1px solid var(--control-border); border-radius: 5px; padding: 6px; background: var(--surface); color: var(--ink); font: inherit; font-size: 12px; }
.analysis-evaluation { font-size: 13px; }
#analysis-context { font-size: 11px; color: var(--muted); }
.analysis-gauge { height: 9px; overflow: hidden; border-radius: 3px; margin: 10px 0; background: var(--player-two); }
.analysis-gauge span { display: block; width: 50%; height: 100%; background: var(--player-one); transition: width 150ms; }
.analysis-gauge-empty { background: var(--control-border); }
.analysis-gauge-empty span { visibility: hidden; }
.analysis-muted, #analysis-status { color: var(--muted); font-size: 11px; line-height: 1.5; }
.spectator-evaluation { grid-area: evaluation; width: 100%; min-width: 0; height: 126px; display: grid; grid-template-rows: 32px 9px 32px 21px; gap: 4px; padding: 8px; border: 1px solid var(--control-border); border-radius: 6px; background: var(--surface); }
.spectator-evaluation .analysis-gauge { margin: 0; }
#spectator-eval-depth { display: block; line-height: 16px; overflow: hidden; }
#spectator-eval-score { max-height: 32px; line-height: 16px; overflow: hidden; }
.spectator-engine-move { margin: 0; padding-top: 2px; border-top: 1px solid var(--control-border); white-space: nowrap; }
.spectator-page .game-stage { grid-template-areas: "clocks clocks" "actions actions" "evaluation evaluation" "board board" "tools tools"; }
#analysis-effort { min-height: 17px; margin: 6px 0 10px; }
.analysis-lines { list-style: none; padding: 0; margin: 0 0 16px; }
.analysis-line { display: grid; grid-template-columns: 48px 1fr; width: 100%; text-align: left; gap: 4px 8px; border: 0; border-top: 1px solid var(--control-border); background: transparent; color: var(--ink); padding: 10px 5px; font: inherit; font-size: 12px; cursor: pointer; }
.analysis-line:hover { background: var(--surface-hover); }
.analysis-line-score { justify-self: end; color: var(--accent); font-variant-numeric: tabular-nums; }
.analysis-continuation { grid-column: 1 / -1; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; color: var(--muted); font-size: 11px; min-height: 13px; }
.analysis-panel button:not(.analysis-line) { min-height: 36px; background: var(--surface); color: var(--ink); border: 1px solid var(--control-border); border-radius: 5px; padding: 7px 10px; cursor: pointer; font: inherit; font-size: 12px; }
.analysis-panel button:not(.analysis-line):hover { background: var(--surface-hover); }
.analysis-variation { padding: 10px; margin: 12px 0; border-left: 3px solid var(--accent); background: var(--player-one-goal); font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; }
.analysis-variation > div { display: flex; gap: 8px; margin-top: 8px; }
.analysis-review-heading { margin-top: 14px; }
#analysis-review { background: var(--accent); color: white; border-color: var(--accent); }
#analysis-review:hover { background: var(--accent-hover); }
.analysis-chart-wrap { position: relative; margin: 10px 0; background: var(--paper); border: 1px solid var(--control-border); border-radius: 5px; }
.analysis-chart-side { display: block; padding: 5px 8px 0; font-size: 10px; color: var(--player-one); }
.analysis-chart-side:last-of-type { padding: 0 8px 5px; color: var(--player-two); }
#analysis-chart { display: block; width: 100%; height: auto; cursor: crosshair; }
.analysis-zero { stroke: var(--control-border); stroke-dasharray: 5 5; }
.analysis-plot { stroke: url(#analysis-evaluation-colours); stroke-width: 2.5; fill: none; }
.analysis-cursor { stroke: var(--muted); stroke-width: 1; opacity: 0.65; }
.analysis-swing-dot { fill: #b66b21; }
.analysis-position-dot { fill: url(#analysis-evaluation-colours); }
#analysis-chart-empty { position: absolute; top: 32%; left: 16px; right: 16px; margin: 0; padding: 4px; text-align: center; color: var(--muted); background: var(--paper); font-size: 11px; pointer-events: none; }
#analysis-progress { width: 100%; height: 7px; accent-color: var(--accent); }
#analysis-status.analysis-error { color: var(--danger); }
.analysis-turning-points { display: flex; flex-wrap: wrap; gap: 6px; }
.analysis-blunder { display: grid; gap: 5px; width: 100%; text-align: left; line-height: 1.5; }
.analysis-blunder span { color: var(--muted); font-size: 11px; }
#analysis-turning-summary { margin: 6px 0; }
.engine-arrow { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 3; }
.engine-arrow path { fill: #c98924; opacity: 0.85; }
.wall.engine-hint { background: #c98924; opacity: 0.9; outline: 1px dashed var(--ink); outline-offset: 1px; pointer-events: none; z-index: 4; }

@media (min-width: 960px) {
  .analysis-page main { width: min(1120px, calc(100% - 32px)); grid-template-columns: minmax(0, 1fr) 340px; grid-template-areas: "header header" "players analysis" "board analysis" "replay analysis" "status analysis" "actions analysis"; column-gap: 22px; }
  .analysis-page .player-panel { display: grid; grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "clocks tools"; position: static; gap: 4px 12px; }
  .analysis-page .clocks { grid-template-columns: 1fr 1fr; }
  .analysis-page .board-frame { justify-self: center; margin-top: 8px; }
  .analysis-page .analysis-panel { grid-area: analysis; margin-top: 4px; position: sticky; top: 8px; max-height: calc(100dvh - 16px); overflow-y: auto; }
  .analysis-page .replay-panel { margin-top: 10px; padding: 12px; }
  .analysis-page .replay-heading h2 { font-size: 14px; }
}
@media (min-width: 760px) and (max-width: 959px) {
  .analysis-page main { grid-template-areas: "header header" "players board" "players replay" "players analysis" "players status" "players actions"; }
  .analysis-page .analysis-panel { grid-area: analysis; }
}
@media (max-width: 560px) {
  .analysis-panel { padding: 12px; }
  .analysis-panel button:not(.analysis-line), .analysis-settings select { min-height: 44px; }
}


/* Replay is a reading workspace: keep navigation compact and controls touchable. */
.replay-page .replay-controls { display: grid; grid-template-columns: 44px 1fr 1fr 44px; gap: 6px; }
.replay-page .replay-controls button { min-height: 44px; touch-action: manipulation; }
.replay-page #replay-range { display: block; height: 32px; margin: 4px 0; }
.replay-page .replay-moves { overscroll-behavior-x: contain; padding-bottom: 2px; }
.replay-page .replay-moves button { touch-action: manipulation; }
.replay-page .replay-heading a { display: inline-flex; align-items: center; min-height: 44px; }
.replay-page .board-frame { scroll-margin-top: max(12px, env(safe-area-inset-top)); }
.analysis-options { margin: 4px 0 12px; border-bottom: 1px solid var(--control-border); }
.analysis-options summary, .analysis-candidates summary { min-height: 44px; align-content: center; cursor: pointer; font-size: 13px; font-weight: 600; }
.analysis-options summary { color: var(--muted); font-weight: 400; }
.analysis-options .analysis-settings { margin: 0 0 12px; }
.analysis-candidates { border-top: 1px solid var(--control-border); margin-top: 12px; }
.analysis-candidates summary span { float: right; color: var(--muted); font-size: 11px; font-weight: 400; }
.analysis-candidates .analysis-lines { margin-bottom: 4px; }
.analysis-line { min-height: 48px; }
.analysis-panel button:focus-visible, .replay-panel button:focus-visible,
.analysis-panel summary:focus-visible, #replay-range:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (max-width: 759px) {
  .replay-page main { width: calc(100% - max(16px, env(safe-area-inset-left)) - max(16px, env(safe-area-inset-right))); margin-top: 4px; }
  .replay-page .clocks { position: static; gap: 6px; padding: 0; }
  .replay-page .game-stage { gap: 6px; }
  .replay-page .tools button { height: 44px; }
  .replay-page .replay-panel { margin-top: 8px; padding: 8px 10px; border-radius: 12px; }
  .replay-page .replay-heading h2 { font-size: 14px; }
  .replay-page #replay-position { margin: 0 0 8px; font-size: 12px; line-height: 1.4; overflow-wrap: anywhere; }
  .analysis-page .analysis-panel { margin-top: 10px; padding: 12px; border-radius: 12px; }
  .analysis-page .analysis-heading h2 { font-size: 16px; }
  .analysis-page .analysis-settings select { font-size: 16px; min-height: 44px; }
  .analysis-page .analysis-evaluation { align-items: baseline; flex-wrap: wrap; gap: 4px 8px; }
  .analysis-page #analysis-score { font-size: 20px; font-variant-numeric: tabular-nums; }
  .analysis-page #analysis-effort { margin-bottom: 6px; }
  .analysis-page .analysis-review-heading { margin-top: 8px; }
  .analysis-page #analysis-chart { height: 100px; }
  .analysis-page .analysis-chart-wrap { margin: 8px 0 4px; }
  .analysis-page #analysis-chart-status { margin: 4px 0; }
  .analysis-page .analysis-blunder { padding: 10px; overflow-wrap: anywhere; }
  .analysis-page .analysis-variation { margin: 8px 0; border-radius: 6px; }
  .analysis-page .analysis-variation > div { display: grid; grid-template-columns: 1fr 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  .analysis-gauge span { transition: none; }
}
.replay-return { width: 100%; min-height: 44px; margin: 0 0 8px; border: 1px solid var(--accent); border-radius: 7px; background: var(--player-one-goal); color: var(--ink); font: inherit; font-size: 13px; cursor: pointer; }
@media (max-width: 959px) {
  .analysis-page .analysis-settings select { font-size: 16px; }
}

/* A board-first mobile workspace, with a single detail view below navigation. */
.replay-view-switch { display: none; }
@media (max-width: 759px) {
  .analysis-page .replay-view-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; margin-top: 6px; border-radius: 9px; background: var(--paper); }
  .analysis-page .replay-view-switch button { min-height: 44px; border: 0; border-radius: 6px; background: transparent; color: var(--muted); font: inherit; font-size: 13px; cursor: pointer; }
  .analysis-page .replay-view-switch button[aria-pressed="true"] { background: var(--surface); color: var(--ink); font-weight: 600; box-shadow: 0 1px 4px rgb(15 23 42 / 12%); }
  .analysis-page[data-replay-view="moves"] #analysis-panel,
  .analysis-page[data-replay-view="review"] #replay-moves { display: none; }
  .analysis-page[data-replay-view="moves"] #replay-moves { margin-top: 10px; }
}

/* Share the board's full width with an evaluation strip, without shrinking cells. */
.analysis-page .board-frame { grid-template-rows: 24px 18px auto 18px; }
.analysis-page .board-frame #board { grid-area: 3 / 2; }
.analysis-page .files-top { grid-area: 2 / 2; }
.analysis-page .files-bottom { grid-area: 4 / 2; }
.analysis-page .ranks-left { grid-area: 3 / 1; }
.analysis-page .ranks-right { grid-area: 3 / 3; }
.board-evaluation { grid-area: 1 / 1 / 2 / -1; display: grid; grid-template-columns: max-content minmax(0, 1fr) 48px; align-items: center; gap: 6px; min-width: 0; }
.board-evaluation .analysis-gauge { margin: 0; height: 12px; min-width: 0; }
#board-eval-depth { color: var(--muted); text-align: left; white-space: nowrap; font-size: 11px; font-variant-numeric: tabular-nums; }
#board-eval-score { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; font-variant-numeric: tabular-nums; }
.blunder-badge, .bad-move-badge, .best-move-badge { position: absolute; z-index: 6; display: block; width: clamp(18px, 5.5%, 28px); height: auto; aspect-ratio: 1; object-fit: contain; transform: translate(-50%, -50%); border-radius: 50%; box-shadow: 0 1px 3px rgb(0 0 0 / 22%); pointer-events: none; }
/* Evaluation is already visible beside the board; keep Review focused on moves. */
.analysis-page #analysis-panel > .analysis-evaluation,
.analysis-page #analysis-gauge,
.analysis-page #analysis-effort { display: none; }
.analysis-continuation:empty { display: none; }

/* Compact replay workspace: board, transport, and one review toolbar. */
.replay-sr-only, .replay-page .replay-heading h2 {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap;
}
.replay-page .replay-heading { gap: 8px; min-width: 0; }
.replay-page #replay-position { flex: 1; display: grid; grid-template-columns: minmax(0, 1fr) max-content; align-items: baseline; column-gap: 8px; margin: 0; min-width: 0; font-size: 12px; }
.replay-position-label { display: flex; flex-wrap: wrap; column-gap: 8px; min-width: 0; }
#replay-engine-move { font-size: 11px; color: var(--muted); white-space: nowrap; }
#replay-move-details { display: grid; grid-template-columns: 7ch 5ch 7ch; align-items: baseline; column-gap: 2px; text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.replay-move-player { color: var(--piece-color); }
#replay-retry { min-height: 44px; padding: 6px 12px; border: 1px solid var(--control-border); border-radius: 7px; background: var(--surface); color: var(--ink); font: inherit; font-size: 12px; cursor: pointer; }
#replay-explore { min-height: 44px; padding: 6px 8px; background: transparent; border: 1px solid var(--control-border); border-radius: 6px; color: var(--ink); font: inherit; font-size: 12px; cursor: pointer; }
#replay-explore[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.replay-page:not(.replay-exploring) .tools { display: none; }
.analysis-toolbar { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 10px; }
.analysis-toolbar .analysis-options { margin: 0; border: 0; }
.analysis-toolbar .analysis-settings { position: absolute; z-index: 8; top: 100%; left: 0; right: 0; padding: 12px; margin: 0; background: var(--surface); border: 1px solid var(--control-border); border-radius: 8px; box-shadow: 0 4px 12px rgb(15 23 42 / 12%); }
.analysis-toolbar .analysis-toggle { min-height: 44px; }
.analysis-candidates, .analysis-blunders { margin: 0; border-top: 1px solid var(--control-border); }
.analysis-blunders summary { min-height: 44px; align-content: center; font-size: 13px; font-weight: 600; cursor: pointer; }
#analysis-blunder-count { float: right; color: var(--muted); font-weight: 400; }
#analysis-turning-summary { display: none; }
.analysis-chart-side { display: none; }
#analysis-chart-empty { top: 25%; }
#analysis-chart-status { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
#analysis-status { margin: 4px 0; }
.analysis-page .analysis-chart-wrap { margin: 4px 0 6px; }
.analysis-page #analysis-chart { height: 64px; }
.analysis-page .analysis-variation { margin: 4px 0; padding: 6px; }
@media (max-width: 759px) {
  .replay-page main { margin-top: 2px; }
  .replay-page header { margin-bottom: 4px; }
  .replay-page .game-stage { gap: 4px; }
  .analysis-page .board-frame { grid-template-rows: 18px 0 auto 14px; gap: 3px; }
  .analysis-page .files-top { display: none; }
  .replay-page .replay-panel { margin-top: 4px; padding: 0 8px 6px; }
  .replay-page .replay-heading { min-height: 44px; }
  .replay-page #replay-position { margin: 0; font-size: 11px; line-height: 1.3; }
  .replay-page #replay-range { height: 20px; margin: 0; }
  .analysis-page .replay-view-switch { padding: 0; margin: 0; gap: 4px; }
  .analysis-page .analysis-panel { margin-top: 4px; padding: 0 10px; }
  .analysis-toolbar { gap: 8px; }
  .analysis-toolbar button { min-width: 72px; }
  .analysis-page #analysis-chart { height: 56px; }
  .analysis-page .analysis-blunder { padding: 7px 8px; }
}
.replay-page:not(.analysis-page) #replay-explore { display: none; }
.replay-page #game-mode { display: none; }
.analysis-toolbar #replay-explore { grid-column: 1 / -1; }
.analysis-extras { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 0 12px; }
.analysis-extras details { min-width: 0; }
.analysis-extras details[open] { grid-column: 1 / -1; }
@media (max-width: 759px) {
  .replay-page .replay-heading { min-height: 24px; }
}


/* Direct views and inline choices; no disclosure menus in analysis. */
.analysis-toolbar { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0 10px; }
.analysis-toolbar .analysis-options { order: 3; flex: 0 0 100%; }
.analysis-toolbar .analysis-settings { position: static; display: grid; grid-template-columns: 1fr; gap: 8px; padding: 8px 0; border: 0; box-shadow: none; margin: 0; }
.analysis-settings fieldset { display: flex; gap: 4px; margin: 0; padding: 0; border: 0; min-width: 0; }
.analysis-settings legend { margin-bottom: 4px; color: var(--muted); font-size: 11px; }
.analysis-settings fieldset label { position: relative; flex: 1; display: block; }
.analysis-settings fieldset input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.analysis-settings fieldset span { display: grid; place-items: center; min-height: 44px; border: 1px solid var(--control-border); border-radius: 6px; color: var(--ink); font-size: 12px; cursor: pointer; }
.analysis-settings fieldset input:checked + span { border-color: var(--accent); background: var(--player-one-goal); font-weight: 600; }
.analysis-settings fieldset input:focus-visible + span { outline: 2px solid var(--accent); outline-offset: 2px; }
.analysis-settings fieldset:disabled span { opacity: 0.5; cursor: default; }
.analysis-extras { display: block; }
.analysis-extras .analysis-lines { display: flex; gap: 6px; overflow-x: auto; overscroll-behavior-x: contain; margin: 0; padding: 4px 0; }
.analysis-extras .analysis-lines li { flex: 0 0 108px; min-width: 0; }
.analysis-extras .analysis-line { border: 1px solid var(--control-border); border-radius: 6px; padding: 6px; grid-template-columns: auto 1fr; min-height: 44px; }
.analysis-extras .analysis-continuation { min-width: 0; }
.analysis-blunders { display: flex; align-items: center; gap: 6px; padding: 4px 0; }
.analysis-blunders h3 { flex: 0 0 auto; font-size: 12px; }
#analysis-blunder-count { float: none; }
.analysis-turning-points { flex: 1; min-width: 0; flex-wrap: nowrap; overflow-x: auto; overscroll-behavior-x: contain; }
.analysis-panel .analysis-blunder { flex: 0 0 auto; width: auto; max-width: 300px; min-height: 44px; padding: 5px 8px; gap: 0; }
.analysis-blunder strong, .analysis-blunder span { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
@media (max-width: 759px) {
  .analysis-page .replay-view-switch { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .analysis-page .analysis-options { display: none; }
  .analysis-page[data-replay-view="settings"] .analysis-options { display: block; }
  .analysis-page[data-replay-view="settings"] .analysis-chart-wrap,
  .analysis-page[data-replay-view="settings"] .analysis-extras,
  .analysis-page[data-replay-view="settings"] .analysis-variation { display: none; }
}
@media (max-width: 759px) {
  .analysis-page[data-replay-view="settings"] #replay-moves { display: none; }
}




#replay-eval-change { white-space: nowrap; font-variant-numeric: tabular-nums; color: var(--muted); }
#replay-eval-number { font-weight: 600; }
#replay-eval-number[data-direction="gain"] { color: #16854b; }
#replay-eval-number[data-direction="loss"] { color: #b4232f; }

/* Replay processing is automatic; the page contains only the saved game view. */
.board-evaluation .analysis-gauge { grid-column: 2; }
#board-eval-score { grid-column: 3; }
.analysis-page #replay-moves { display: flex !important; margin-top: 4px; }
.analysis-page #analysis-panel { display: block !important; }

/* Replays stay readable in short viewports; the page scrolls around the board. */
.replay-page .board-frame { width: 100%; max-width: 640px; justify-self: center; }
@media (max-width: 759px) {
  .game-page input, .game-page select { font-size: 16px; min-height: 44px; }
}