:root {
  color-scheme: dark;
  --page: #201f1d;
  --header: #181917;
  --panel: #292825;
  --panel-raised: #302f2c;
  --panel-hover: #393733;
  --line: #45433e;
  --line-soft: #373632;
  --text: #f1f1ef;
  --text-2: #c4c3bf;
  --text-3: #92918c;
  --green: #81b64c;
  --green-strong: #94c960;
  --green-deep: #5c8731;
  --red: #d76a61;
  --amber: #d2a84c;
  --blue: #7196ad;
  --board-light: #ebecd0;
  --board-dark: #779556;
  --board-light-ink: #779556;
  --board-dark-ink: #ebecd0;
  --board-size: min(65vw, calc(100vh - 218px), 720px);
  --radius: 5px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html { min-width: 0; background: var(--page); }

body {
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background: var(--page);
  font: 14px/1.45 var(--font);
  -webkit-font-smoothing: antialiased;
}

button, input, textarea { font: inherit; }
button { color: inherit; }
button, summary, .brand { -webkit-tap-highlight-color: transparent; }
a { color: var(--green-strong); }
[hidden] { display: none !important; }

button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid #b8dc8e;
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  padding: 9px 12px;
  color: #15200d;
  background: #c6e5a2;
  border-radius: var(--radius);
  transform: translateY(-150%);
  transition: transform 140ms ease;
}
.skip-link:focus { transform: translateY(0); }

.app-header {
  position: relative;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 0 22px;
  background: var(--header);
  border-bottom: 1px solid #343532;
}

.brand {
  color: var(--text);
  font-size: 16px;
  font-weight: 720;
  letter-spacing: -0.015em;
  text-decoration: none;
}

.brand-short { display: none; }
.mode-switch { display: grid; grid-template-columns: repeat(3, 1fr); min-width: 218px; padding: 3px; background: #242522; border: 1px solid #373834; border-radius: 6px; }
.mode-button { min-height: 32px; padding: 4px 13px; color: var(--text-3); background: transparent; border: 0; border-radius: 4px; cursor: pointer; font-size: 12px; font-weight: 700; transition: color 130ms ease, background-color 130ms ease, transform 130ms ease; }
.mode-link { display: grid; place-items: center; text-decoration: none; }
.mode-button:hover { color: var(--text-2); }
.mode-button.is-active { color: var(--text); background: #3b3c37; box-shadow: 0 1px 3px rgb(0 0 0 / 22%); }
.mode-button:active { transform: scale(.98); }
.header-actions { display: flex; align-items: center; justify-self: end; gap: 16px; min-width: 0; }
.rules-label { display: none; }
.engine-status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
  color: var(--text-2);
  font-size: 12px;
  white-space: nowrap;
}
.engine-status > span:last-child { overflow: hidden; text-overflow: ellipsis; }
.status-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--amber); }
.engine-status.is-online .status-dot { background: var(--green); }
.engine-status.is-offline .status-dot { background: var(--red); }

.analysis-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 430px);
  gap: clamp(18px, 2.2vw, 34px);
  width: min(1370px, 100%);
  margin: 0 auto;
  padding: 18px 24px 28px;
  align-items: start;
}

.analysis-workspace.is-play-mode { --board-size: min(63vw, calc(100vh - 176px), 760px); grid-template-columns: minmax(0, 1fr) minmax(350px, 410px); gap: clamp(20px, 3vw, 46px); padding-top: 14px; }
.is-play-mode .position-strip,
.is-play-mode .eval-rail,
.is-play-mode .board-toolbar,
.is-play-mode .boundary-notice { display: none; }
.is-play-mode .series-ledger { width: var(--board-size); padding: 0 0 7px; }
.is-play-mode .board-layout { grid-template-columns: var(--board-size); gap: 0; }
.is-play-mode .inspector { min-height: 560px; }

.board-pane {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 0;
}

.play-player-strip { display: grid; grid-template-columns: 38px minmax(0, 1fr) auto; align-items: center; width: var(--board-size); min-height: 52px; gap: 10px; padding: 5px 3px; }
.play-player-strip.is-active { color: var(--text); }
.player-color { position: relative; display: grid; width: 36px; height: 36px; place-items: center; overflow: hidden; border: 1px solid #55534d; border-radius: 5px; box-shadow: inset 0 0 0 1px rgb(255 255 255 / 5%); }
.player-color::before { font-size: 24px; line-height: 1; }
.player-color.is-white { color: #f6f5ed; background: #62605a; }
.player-color.is-white::before { content: "♔"; text-shadow: 0 1px 2px #111; }
.player-color.is-black { color: #1c1c1a; background: #d8d5ca; }
.player-color.is-black::before { content: "♚"; }
.play-player-strip.is-active .player-color { border-color: var(--green); box-shadow: 0 0 0 2px rgb(129 182 76 / 16%); }
.player-identity { display: block; min-width: 0; }
.player-identity strong,
.player-identity small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-identity strong { font-size: 13px; }
.player-identity small { margin-top: 1px; color: var(--text-3); font-size: 10px; }
.player-clock { min-width: 70px; padding: 6px 8px; color: var(--text-3); background: #262622; border-radius: 4px; font: 700 10px/1 var(--font); text-align: center; }
.play-player-strip.is-active .player-clock { color: #cce9ab; background: #334329; }

.position-strip,
.series-ledger,
.board-toolbar,
.boundary-notice {
  width: calc(var(--board-size) + 32px);
  max-width: 100%;
}

.position-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 58px;
  padding: 0 2px 8px 32px;
}
.turn-copy { min-width: 0; }
.turn-label,
.series-subtitle,
.panel-intro,
.tree-help,
.field-help,
.piece-credit,
.best-notation { margin: 0; }
.turn-label { color: var(--text-2); font-size: 12px; font-weight: 650; }
.series-heading { display: flex; align-items: center; gap: 9px; min-width: 0; }
.series-heading h1 { margin: 1px 0 0; overflow: hidden; font-size: 20px; line-height: 1.2; letter-spacing: -0.02em; text-overflow: ellipsis; white-space: nowrap; }
.series-subtitle { max-width: 620px; margin-top: 2px; overflow: hidden; color: var(--text-3); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.series-number { display: grid; grid-template-columns: auto auto; align-items: baseline; gap: 6px; color: var(--text-3); }
.series-number small { font-size: 9px; font-weight: 700; letter-spacing: .1em; }
.series-number b { color: var(--text); font: 700 23px/1 var(--mono); }
.boundary-pill { flex: 0 0 auto; color: var(--text-3); font-size: 11px; font-weight: 650; }
.boundary-pill::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--text-3); vertical-align: 1px; }
.boundary-pill.is-boundary::before,
.boundary-pill.is-complete::before { background: var(--green); }
.boundary-pill.is-mid-series::before { background: var(--amber); }

.series-ledger {
  display: flex;
  align-items: center;
  min-height: 30px;
  padding: 0 0 7px 32px;
  gap: 10px;
}
.ledger-label { flex: 0 0 auto; color: var(--text-3); font-size: 11px; }
.move-chips { display: flex; min-width: 0; gap: 4px; overflow-x: auto; scrollbar-width: thin; }
.move-chip,
.series-move {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  gap: 5px;
  min-height: 23px;
  padding: 2px 7px;
  color: var(--text-2);
  background: var(--panel-raised);
  border-radius: 3px;
  font-size: 12px;
  animation: move-in 150ms ease-out both;
}
.move-chip b,
.series-move b { color: var(--text-3); font: 700 10px/1 var(--mono); }
.empty-chip { color: var(--text-3); font-size: 12px; }

.board-layout { display: grid; grid-template-columns: 26px var(--board-size); gap: 6px; max-width: 100%; }
.board-shell {
  position: relative;
  width: var(--board-size);
  height: var(--board-size);
  overflow: hidden;
  background: var(--board-dark);
  border-radius: 3px;
  box-shadow: 0 3px 14px rgb(0 0 0 / 24%);
  touch-action: none;
}
.board { display: grid; width: 100%; height: 100%; grid-template: repeat(8, 1fr) / repeat(8, 1fr); }
.square {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  cursor: default;
}
.square.light { background: var(--board-light); }
.square.dark { background: var(--board-dark); }
.square.has-piece.is-legal-from { cursor: grab; }
.square.has-piece.is-legal-from:active { cursor: grabbing; }
.piece { position: relative; z-index: 2; display: block; width: 88%; height: 88%; pointer-events: none; user-select: none; transition: transform 110ms ease; }
.square.has-piece:hover .piece { transform: translateY(-1px); }
.square.is-last::before,
.square.is-selected::before { content: ""; position: absolute; z-index: 1; inset: 0; pointer-events: none; }
.square.is-last::before { background: rgb(246 246 105 / 42%); }
.square.is-selected::before { background: rgb(246 246 105 / 65%); }
.square.is-legal::after { content: ""; position: absolute; z-index: 5; width: 25%; height: 25%; border-radius: 50%; background: rgb(33 44 25 / 34%); pointer-events: none; }
.square.is-legal.is-capture::after { width: 82%; height: 82%; background: transparent; border: max(3px, .45vw) solid rgb(33 44 25 / 33%); }
.coordinate { position: absolute; z-index: 7; font: 750 clamp(8px, calc(var(--board-size) / 65), 12px)/1 var(--font); pointer-events: none; }
.coordinate.file { right: 3px; bottom: 3px; }
.coordinate.rank { top: 3px; left: 3px; }
.square.light .coordinate { color: var(--board-light-ink); }
.square.dark .coordinate { color: var(--board-dark-ink); }

.board-arrows { position: absolute; z-index: 8; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; }
.board-arrows line { stroke-linecap: round; animation: arrow-in 170ms ease-out both; }
.board-loading {
  position: absolute;
  z-index: 12;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  color: #fff;
  background: rgb(24 25 23 / 70%);
  font-size: 13px;
  transition: opacity 130ms ease, visibility 130ms ease;
}
.board-loading.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.spinner { width: 15px; height: 15px; flex: 0 0 auto; border: 2px solid rgb(255 255 255 / 28%); border-top-color: currentColor; border-radius: 50%; animation: spin .75s linear infinite; }
.drag-piece { position: fixed; z-index: 100; width: min(calc(var(--board-size) / 8), 90px); height: min(calc(var(--board-size) / 8), 90px); opacity: 0; pointer-events: none; transform: translate(-50%, -50%); }
.drag-piece img { width: 100%; height: 100%; }
.drag-piece.is-visible { opacity: .96; }
.board-shell.is-previewing::after { content: "PV preview"; position: absolute; z-index: 9; right: 7px; top: 7px; padding: 4px 7px; color: #fff; background: rgb(24 25 23 / 78%); border-radius: 3px; font-size: 10px; font-weight: 700; letter-spacing: .06em; }

.eval-rail { position: relative; width: 26px; height: var(--board-size); overflow: hidden; color: #fff; background: #171715; border: 1px solid #4d4b46; border-radius: 3px; }
.eval-fill { position: absolute; inset: auto 0 0; height: 50%; background: #f3f2ec; transition: height 240ms cubic-bezier(.2,.8,.2,1); }
.eval-marker { position: absolute; z-index: 2; left: 50%; bottom: 50%; max-width: calc(100% - 2px); padding: 2px 1px; overflow: hidden; color: #111; background: #f3f2ec; border: 1px solid rgb(0 0 0 / 40%); border-radius: 2px; font: 750 7px/1 var(--mono); text-overflow: clip; white-space: nowrap; transform: translate(-50%, 50%); transition: bottom 240ms cubic-bezier(.2,.8,.2,1); }
.eval-side { position: absolute; z-index: 3; left: 50%; font: 750 9px/1 var(--font); transform: translateX(-50%); mix-blend-mode: difference; }
.eval-black { top: 5px; }
.eval-white { bottom: 5px; }

.board-toolbar { display: flex; align-items: center; min-height: 44px; padding: 5px 0 0 32px; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.board-toolbar::-webkit-scrollbar { display: none; }
.tool-button,
.analysis-toggle,
.tree-tool,
.secondary,
.primary,
.pv-controls button,
.dialog-close {
  min-height: 38px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: color 130ms ease, background-color 130ms ease, border-color 130ms ease, transform 110ms ease;
}
.tool-button { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 6px; padding: 6px 9px; color: var(--text-2); background: transparent; }
.tool-button svg { width: 17px; height: 17px; fill: currentColor; }
.tool-button:hover:not(:disabled) { color: var(--text); background: var(--panel-raised); }
.tool-button:active:not(:disabled), .tree-tool:active:not(:disabled), .primary:active:not(:disabled) { transform: translateY(1px); }
button:disabled { cursor: not-allowed; opacity: .42; }
.toolbar-divider { width: 1px; height: 22px; flex: 0 0 auto; margin: 0 4px; background: var(--line); }
.primary { padding: 8px 13px; color: #17200f; background: var(--green); border-color: var(--green-deep); font-weight: 720; }
.primary:hover:not(:disabled) { background: var(--green-strong); }
.continue-button { margin-left: auto; white-space: nowrap; }

.boundary-notice { display: flex; align-items: flex-start; gap: 8px; min-height: 31px; padding: 7px 0 0 32px; color: var(--text-3); font-size: 12px; }
.notice-mark { width: 7px; height: 7px; flex: 0 0 auto; margin-top: 5px; border-radius: 50%; background: var(--green); }
.boundary-notice.is-warning .notice-mark { background: var(--amber); }
.boundary-notice.is-game-over .notice-mark { background: var(--red); }
.boundary-notice.is-game-over { color: #e5aaa5; }

.inspector {
  position: sticky;
  top: 18px;
  min-width: 0;
  height: calc(100vh - 88px);
  min-height: 560px;
  overflow: hidden;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 7px;
  box-shadow: 0 3px 14px rgb(0 0 0 / 16%);
}

.play-panel { height: 100%; padding: 20px 20px 22px; overflow-y: auto; scrollbar-color: #55524c transparent; scrollbar-width: thin; animation: panel-in 180ms ease-out both; }
.play-heading { padding-bottom: 17px; border-bottom: 1px solid var(--line-soft); }
.play-heading h1 { margin: 2px 0 5px; font-size: 23px; line-height: 1.15; letter-spacing: -.025em; }
.play-heading > p:last-child { max-width: 355px; margin: 0; color: var(--text-3); font-size: 11px; }
.side-picker { min-width: 0; margin: 0; padding: 15px 0; border: 0; border-bottom: 1px solid var(--line-soft); }
.side-picker legend { padding: 0; color: var(--text-3); font-size: 11px; font-weight: 650; }
.side-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; margin-top: 7px; }
.side-option { display: grid; grid-template-columns: 36px minmax(0, 1fr); align-items: center; min-height: 56px; gap: 7px; padding: 6px 8px; color: var(--text-3); background: #242421; border: 1px solid var(--line); border-radius: 5px; cursor: pointer; text-align: left; transition: color 130ms ease, background-color 130ms ease, border-color 130ms ease, transform 120ms ease; }
.side-option:hover { color: var(--text-2); background: var(--panel-hover); }
.side-option.is-active { color: var(--text); background: #353b30; border-color: #5b783f; }
.side-option:active { transform: translateY(1px); }
.side-option strong,
.side-option small { display: block; }
.side-option strong { font-size: 12px; }
.side-option small { color: var(--text-3); font-size: 9px; }
.side-piece { display: grid; width: 32px; height: 32px; place-items: center; border-radius: 4px; font-size: 23px; }
.side-piece.is-white { color: #fff; background: #686660; text-shadow: 0 1px 2px #111; }
.side-piece.is-black { color: #111; background: #dedbd0; }
.play-strength-picker { min-width: 0; margin: 0; padding: 12px 0; border: 0; border-bottom: 1px solid var(--line-soft); }
.play-strength-picker legend { padding: 0; color: var(--text-3); font-size: 11px; font-weight: 650; }
.play-strength-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px; margin-top: 7px; }
.play-strength-option { display: grid; grid-template-columns: 24px minmax(0, 1fr); align-items: center; min-height: 47px; gap: 6px; padding: 5px 7px; color: var(--text-3); background: #22221f; border: 1px solid var(--line); border-radius: 5px; cursor: pointer; text-align: left; transition: color 130ms ease, background-color 130ms ease, border-color 130ms ease, transform 120ms ease; }
.play-strength-option:hover { color: var(--text-2); background: var(--panel-hover); }
.play-strength-option.is-active { color: var(--text); background: #353b30; border-color: #5b783f; }
.play-strength-option:active { transform: translateY(1px); }
.play-strength-option strong,
.play-strength-option small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.play-strength-option strong { font-size: 11px; }
.play-strength-option small { margin-top: 1px; color: var(--text-3); font-size: 8px; }
.strength-mark { display: grid; width: 22px; height: 22px; place-items: center; color: #cbe5ad; background: #3b4631; border-radius: 3px; font-size: 11px; }
.play-live { display: grid; grid-template-columns: 30px minmax(0, 1fr); align-items: center; min-height: 60px; gap: 10px; margin-top: 15px; padding: 10px 11px; background: #242621; border: 1px solid #42463b; border-radius: 5px; }
.play-live > span:last-child { min-width: 0; }
.play-live strong,
.play-live small { display: block; }
.play-live strong { font-size: 12px; }
.play-live small { margin-top: 2px; overflow: hidden; color: var(--text-3); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.play-live-mark { display: flex; align-items: flex-end; justify-content: center; gap: 2px; height: 20px; }
.play-live-mark i { width: 3px; height: 8px; background: var(--green); border-radius: 2px; }
.play-live.is-thinking .play-live-mark i { animation: thinking .72s ease-in-out infinite alternate; }
.play-live.is-thinking .play-live-mark i:nth-child(2) { animation-delay: .12s; }
.play-live.is-thinking .play-live-mark i:nth-child(3) { animation-delay: .24s; }
.play-live.is-error { color: #efbbb6; background: #3c2927; border-color: #6e3934; }
.play-live.is-error .play-live-mark i { background: var(--red); }
.play-live.is-warning { color: #f0ddb0; background: #3a3324; border-color: #6b5a32; }
.play-live.is-warning .play-live-mark i { background: var(--amber); }
.play-live.is-won { color: #d9efc0; background: #2d3b25; border-color: #4f6b3a; }
.play-live.is-finished .play-live-mark i { background: var(--text-3); }
.play-live.is-review { color: #e5d8b4; background: #363127; border-color: #685c3c; }
.play-live.is-review .play-live-mark i { background: #c5a95d; }
.play-series-card { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 2px 12px; margin-top: 13px; padding: 13px 2px 12px; border-bottom: 1px solid var(--line-soft); }
.play-series-card h2 { margin: 1px 0 0; font-size: 15px; }
.play-series-card p { grid-column: 1 / -1; margin: 3px 0 0; color: var(--text-3); font-size: 10px; }
.play-series-count { grid-row: 1; grid-column: 2; color: var(--text); font: 730 27px/1 var(--mono); }
.play-history-section { padding-top: 13px; }
.play-section-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.play-section-heading h2 { margin: 0; font-size: 13px; }
.play-section-heading span { color: var(--text-3); font-size: 9px; }
.play-history { max-height: 225px; margin-top: 7px; overflow: auto; border-top: 1px solid var(--line-soft); scrollbar-width: thin; }
.play-history-row { display: grid; grid-template-columns: 28px minmax(0, 1fr) 22px; align-items: center; min-height: 43px; gap: 7px; border-bottom: 1px solid var(--line-soft); animation: move-in 150ms ease-out both; }
.play-history-row.is-current { background: rgb(197 169 93 / 8%); box-shadow: inset 2px 0 #c5a95d; }
.play-history-series { color: var(--text-3); font: 700 9px var(--mono); }
.play-history-moves { display: block; min-width: 0; }
.play-history-moves strong,
.play-history-moves small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.play-history-moves strong { font-size: 10px; }
.play-history-moves small { margin-top: 1px; color: var(--text-3); font-size: 10px; }
.history-color { display: grid; width: 20px; height: 20px; place-items: center; border: 1px solid var(--line); border-radius: 3px; font: 750 8px var(--font); }
.history-color.is-white { color: #222; background: #e5e2d7; }
.history-color.is-black { color: #eee; background: #252522; }
.play-history-empty { margin: 0; padding: 19px 4px; color: var(--text-3); font-size: 11px; text-align: center; }
.play-history-navigation { display: grid; grid-template-columns: minmax(84px, 1fr) auto minmax(84px, 1fr); align-items: center; gap: 7px; padding-top: 9px; }
.play-history-step { display: inline-flex; align-items: center; justify-content: center; min-height: 34px; gap: 6px; padding: 6px 9px; color: var(--text-2); background: #282824; border: 1px solid var(--line); border-radius: 4px; font-size: 10px; font-weight: 680; }
.play-history-step:hover:not(:disabled) { color: var(--text); background: var(--panel-hover); border-color: #66635d; }
.play-history-step:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
.play-history-step:disabled { color: #66645f; cursor: default; opacity: .58; }
.play-history-position { min-width: 92px; color: var(--text-3); font: 700 9px var(--mono); text-align: center; white-space: nowrap; }
.board-shell.is-reviewing { box-shadow: 0 0 0 2px rgb(197 169 93 / 38%); }
.play-actions { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 7px; margin-top: 14px; }
.play-new-game { grid-column: 1 / -1; min-height: 42px; }
.play-retry-engine { grid-column: 1 / -1; min-height: 38px; }
.play-actions .secondary { min-height: 38px; }
.play-resign { color: #dba39e; }
.engine-proof { display: grid; gap: 5px; margin: 15px 0 0; padding-top: 12px; border-top: 1px solid var(--line-soft); }
.engine-proof div { display: grid; grid-template-columns: 65px minmax(0, 1fr); gap: 8px; }
.engine-proof dt { color: var(--text-3); font-size: 9px; }
.engine-proof dd { margin: 0; overflow: hidden; color: var(--text-2); font: 9px var(--mono); text-overflow: ellipsis; white-space: nowrap; }
.engine-proof div:nth-last-child(-n + 3) dd { white-space: normal; }
.tabs { display: grid; grid-template-columns: repeat(2, 1fr); height: 46px; border-bottom: 1px solid var(--line); }
.tab { position: relative; padding: 0 10px; color: var(--text-3); background: transparent; border: 0; cursor: pointer; font-weight: 670; }
.tab::after { content: ""; position: absolute; right: 18%; bottom: -1px; left: 18%; height: 2px; background: var(--green); opacity: 0; transform: scaleX(.5); transition: opacity 140ms ease, transform 140ms ease; }
.tab:hover { color: var(--text-2); background: rgb(255 255 255 / 2%); }
.tab.is-active { color: var(--text); }
.tab.is-active::after { opacity: 1; transform: scaleX(1); }
.tab-panel { height: calc(100% - 46px); padding: 16px 17px 24px; overflow-y: auto; scrollbar-color: #55524c transparent; scrollbar-width: thin; animation: panel-in 150ms ease-out both; }

.auto-analysis-bar { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 11px; }
.auto-analysis-copy { display: flex; align-items: center; min-width: 0; gap: 10px; }
.auto-analysis-copy h2,
.panel-heading h2,
.dialog-heading h2 { margin: 0; font-size: 17px; line-height: 1.25; letter-spacing: -.015em; }
.auto-analysis-copy p { margin: 1px 0 0; overflow: hidden; color: var(--text-3); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.analysis-live-dot { width: 9px; height: 9px; flex: 0 0 auto; border: 2px solid #506240; border-radius: 50%; background: var(--green); }
.inspector.is-analyzing .analysis-live-dot { animation: live-pulse 1.25s ease-in-out infinite; }
.analysis-toggle { display: inline-flex; align-items: center; flex: 0 0 auto; gap: 6px; padding: 6px 10px; color: var(--text-2); background: transparent; border-color: var(--line); }
.analysis-toggle:hover { color: var(--text); background: var(--panel-hover); }
.analysis-toggle svg { width: 15px; height: 15px; fill: currentColor; }
.analysis-progress { width: 100%; height: 3px; overflow: hidden; background: #1d1d1b; border-radius: 2px; }
.analysis-progress > span { display: block; width: 0; height: 100%; background: var(--green); transition: width 260ms cubic-bezier(.2,.8,.2,1); }
.inspector.is-analyzing .analysis-progress > span { box-shadow: 8px 0 0 rgb(129 182 76 / 22%); }

.analysis-presets { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 13px 0 11px; border-bottom: 1px solid var(--line-soft); }
.preset-label { color: var(--text-3); font-size: 12px; font-weight: 650; }
.preset-switch { display: flex; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); }
.preset-switch button { min-width: 92px; min-height: 42px; padding: 4px 10px; color: var(--text-3); background: transparent; border: 0; cursor: pointer; }
.preset-switch button + button { border-left: 1px solid var(--line); }
.preset-switch strong, .preset-switch small { display: block; }
.preset-switch strong { color: inherit; font-size: 12px; }
.preset-switch small { font-size: 9px; }
.preset-switch button:hover { color: var(--text-2); background: var(--panel-hover); }
.preset-switch button.is-active { color: var(--text); background: #3b4234; }

.search-settings,
.result-details,
.search-details { border-bottom: 1px solid var(--line-soft); }
.search-settings > summary,
.result-details > summary,
.search-details > summary { min-height: 39px; padding: 10px 2px; color: var(--text-3); cursor: pointer; font-size: 12px; }
.search-settings > summary:hover,
.result-details > summary:hover,
.search-details > summary:hover { color: var(--text-2); }
.search-controls { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; padding: 2px 0 13px; }
.search-controls label,
.setup-grid label { display: grid; gap: 5px; min-width: 0; color: var(--text-3); font-size: 11px; }
input, textarea { width: 100%; min-width: 0; color: var(--text); background: #1f1f1d; border: 1px solid var(--line); border-radius: var(--radius); }
input { min-height: 38px; padding: 7px 9px; }
textarea { min-height: 76px; padding: 9px; resize: vertical; font: 12px/1.45 var(--mono); }
input:hover, textarea:hover { border-color: #5a5751; }
input:focus, textarea:focus { border-color: var(--green); }
.input-suffix { position: relative; display: block; }
.input-suffix input { padding-right: 24px; }
.input-suffix small { position: absolute; top: 50%; right: 8px; color: var(--text-3); transform: translateY(-50%); }

.analysis-empty,
.analysis-loading { display: grid; justify-items: center; min-height: 154px; padding: 30px 14px 22px; text-align: center; }
.analysis-empty h3,
.analysis-loading h3 { margin: 12px 0 3px; font-size: 14px; }
.analysis-empty p,
.analysis-loading p { max-width: 330px; margin: 0; color: var(--text-3); font-size: 12px; }
.empty-pulse { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 6px rgb(129 182 76 / 10%); }
.thinking-lines { display: flex; align-items: end; gap: 3px; height: 18px; }
.thinking-lines span { width: 3px; height: 7px; background: var(--green); animation: thinking .85s ease-in-out infinite alternate; }
.thinking-lines span:nth-child(2) { animation-delay: .13s; }
.thinking-lines span:nth-child(3) { animation-delay: .26s; }

.analysis-error,
.setup-error { margin: 12px 0; padding: 10px 11px; color: #efbbb6; background: #3c2927; border-left: 3px solid var(--red); border-radius: 3px; }
.analysis-error strong,
.analysis-error span { display: block; }
.analysis-error span { margin-top: 2px; color: #d9a7a2; font-size: 12px; overflow-wrap: anywhere; }

.analysis-results { animation: results-in 180ms ease-out both; }
.result-hero { display: flex; align-items: flex-end; justify-content: space-between; gap: 14px; padding: 15px 1px 12px; border-bottom: 1px solid var(--line-soft); }
.result-label,
.classification,
.confidence { display: block; }
.result-label { color: var(--text-3); font-size: 10px; letter-spacing: .03em; }
.result-score { display: block; margin-top: 2px; font: 730 23px/1.2 var(--mono); }
.result-raw-score { display: block; margin-top: 3px; color: var(--text-3); font: 650 9px/1.2 var(--mono); }
.evaluation-help { margin: 8px 0 0; padding: 7px 8px; color: var(--text-3); background: #22221f; border-left: 2px solid #687b51; border-radius: 2px; font-size: 9px; line-height: 1.45; }
.classification-block { min-width: 0; text-align: right; }
.classification { color: var(--text); font-weight: 700; }
.confidence { max-width: 205px; margin-top: 2px; overflow: hidden; color: var(--text-3); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.proof-strip { display: flex; flex-wrap: wrap; gap: 4px; padding: 10px 0; border-bottom: 1px solid var(--line-soft); }
.proof-chip { padding: 3px 6px; color: var(--text-3); background: #22221f; border: 1px solid var(--line-soft); border-radius: 3px; font-size: 10px; }
.proof-chip.is-good { color: #bddd9b; border-color: #486534; }
.proof-chip.is-warning { color: #e1c27f; border-color: #67542c; }
.proof-chip.is-danger { color: #e7aaa5; border-color: #6e3934; }
.result-section { padding: 12px 0; border-bottom: 1px solid var(--line-soft); }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 8px; }
.section-heading h3,
.study-tree-heading h3 { margin: 0; font-size: 13px; }
.section-heading > span { color: var(--text-3); font-size: 10px; }
.best-series { display: flex; flex-wrap: wrap; gap: 5px; }
.best-notation { margin-top: 7px; color: var(--text-3); font-size: 11px; overflow-wrap: anywhere; }
.pv-line { display: flex; flex-wrap: wrap; gap: 5px; }
.pv-series-group { display: inline-flex; flex-wrap: wrap; align-items: center; overflow: hidden; border: 1px solid var(--line-soft); border-radius: 3px; }
.pv-series-group small { align-self: stretch; display: grid; place-items: center; padding: 0 5px; color: var(--text-3); background: #22221f; font: 700 9px var(--mono); }
.pv-step { min-height: 30px; padding: 4px 7px; color: var(--text-2); background: transparent; border: 0; border-left: 1px solid var(--line-soft); cursor: pointer; }
.pv-step:hover, .pv-step.is-previewed { color: var(--text); background: #3a4133; }
.pv-controls { display: inline-flex; align-items: center; overflow: hidden; border: 1px solid var(--line); border-radius: 3px; }
.pv-controls button { min-width: 30px; min-height: 28px; padding: 2px 6px; color: var(--text-2); background: transparent; border: 0; border-radius: 0; }
.pv-controls button:hover:not(:disabled) { background: var(--panel-hover); }
.pv-controls span { min-width: 66px; padding: 0 5px; color: var(--text-3); font-size: 9px; text-align: center; }
.pv-controls .pv-exit { border-left: 1px solid var(--line); font-size: 10px; }
.alternatives-list { display: grid; gap: 2px; }
.alternative-row { display: grid; width: 100%; min-width: 0; min-height: 47px; align-items: center; padding: 6px 5px; color: var(--text-2); background: transparent; border: 0; border-radius: 3px; cursor: pointer; text-align: left; transition: background-color 120ms ease; }
.alternative-row { grid-template-columns: 22px minmax(0, 1fr) auto; gap: 7px; }
.alternative-row:hover { background: var(--panel-hover); }
.alt-rank { color: var(--text-3); font: 700 10px var(--mono); text-align: center; }
.alt-line { display: block; min-width: 0; }
.alt-line strong, .alt-line small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.alt-line strong { color: var(--text); font-size: 12px; }
.alt-line small { margin-top: 1px; color: var(--text-3); font-size: 10px; }
.alt-score { color: var(--text-2); font: 700 11px var(--mono); text-align: right; white-space: nowrap; }
.result-details { border-bottom: 0; }
.result-details[open] > summary { border-bottom: 1px solid var(--line-soft); }
.result-details .result-section { padding-right: 2px; padding-left: 2px; }
.breakdown { display: grid; gap: 7px; }
.breakdown-row { display: grid; grid-template-columns: minmax(68px, .8fr) 1.2fr minmax(72px, auto); align-items: center; gap: 7px; min-width: 0; }
.breakdown-label { overflow: hidden; color: var(--text-3); font-size: 10px; text-overflow: ellipsis; white-space: nowrap; }
.breakdown-track { position: relative; height: 4px; background: #1d1d1b; }
.breakdown-track::after { content: ""; position: absolute; top: -2px; bottom: -2px; left: 50%; width: 1px; background: var(--line); }
.breakdown-bar { position: absolute; top: 0; bottom: 0; }
.breakdown-bar.is-positive { left: 50%; background: var(--green); }
.breakdown-bar.is-negative { right: 50%; background: var(--red); }
.breakdown-value { overflow: hidden; color: var(--text-2); font: 700 9px var(--mono); text-align: right; text-overflow: ellipsis; }
.warnings-list { margin: 0; padding-left: 19px; color: #e4c281; font-size: 11px; }
.search-details { border-bottom: 0; }
.search-details dl { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 5px 12px; margin: 0 0 10px; font-size: 10px; }
.search-details dt { min-width: 0; overflow: hidden; color: var(--text-3); text-overflow: ellipsis; }
.search-details dd { max-width: 170px; margin: 0; overflow: hidden; color: var(--text-2); font-family: var(--mono); text-overflow: ellipsis; white-space: nowrap; }

.study-tree-section { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line); }
.study-tree-heading,
.panel-heading,
.dialog-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.section-kicker { margin: 0 0 1px; color: var(--text-3); font-size: 9px; font-weight: 720; letter-spacing: .11em; }
.study-save-state { color: var(--text-3); font-size: 10px; }
.tree-toolbar { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 10px; }
.tree-tool, .secondary { min-height: 34px; padding: 5px 8px; color: var(--text-2); background: transparent; border-color: var(--line); font-size: 11px; }
.tree-tool:hover:not(:disabled), .secondary:hover:not(:disabled) { color: var(--text); background: var(--panel-hover); }
.tree-tool.is-primary { color: #bddd9b; border-color: #4f6b3a; }
.tree-tool.is-active { background: #3a4133; }
.tree-help { margin-top: 8px; color: var(--text-3); font-size: 10px; }
.analysis-tree { max-height: 330px; margin-top: 9px; overflow: auto; border-top: 1px solid var(--line-soft); scrollbar-width: thin; }
.tree-root,
.tree-move { display: grid; width: 100%; min-width: 0; align-items: center; min-height: 36px; color: var(--text-2); background: transparent; border: 0; border-bottom: 1px solid var(--line-soft); cursor: pointer; text-align: left; }
.tree-root { grid-template-columns: 18px minmax(0, 1fr) auto; padding: 4px 7px; }
.tree-root span { color: var(--green); font-size: 8px; }
.tree-root strong { color: var(--text); font-size: 11px; }
.tree-root small { color: var(--text-3); font-size: 9px; }
.tree-move { grid-template-columns: 22px minmax(0, 1fr) auto; gap: 4px; padding: 4px 6px; }
.tree-root:hover, .tree-move:hover, .tree-root.is-current, .tree-move.is-current { background: var(--panel-hover); }
.tree-micro-index { color: var(--text-3); font: 700 9px var(--mono); text-align: center; }
.tree-move strong { overflow: hidden; color: var(--text); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.tree-children { margin-left: 11px; border-left: 1px solid var(--line); }
.tree-children.has-variations { border-left-color: var(--green-deep); }
.tree-series-label { padding: 7px 6px 3px; color: var(--text-3); font-size: 8px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.move-quality,
.tree-continue { padding: 2px 5px; border-radius: 3px; font-size: 8px; white-space: nowrap; }
.tree-continue, .move-quality.is-unrated { color: var(--text-3); background: #21211f; }
.move-quality.is-best, .move-quality.is-excellent { color: #bddd9b; background: #324429; }
.move-quality.is-good { color: #b8d7e8; background: #2c414c; }
.move-quality.is-inaccuracy { color: #e4c681; background: #4a4027; }
.move-quality.is-mistake, .move-quality.is-blunder { color: #efaaa4; background: #4c2d2a; }
.tree-empty { margin: 12px; color: var(--text-3); font-size: 11px; }

.panel-heading { margin-bottom: 11px; }
.panel-intro { margin-bottom: 13px; color: var(--text-3); font-size: 11px; }

.setup-panel form { display: grid; gap: 9px; }
.field-label { color: var(--text-2); font-size: 11px; font-weight: 650; }
.setup-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 9px; }
.field-help { color: var(--text-3); font-size: 10px; }
.setup-actions { display: flex; gap: 7px; margin-top: 3px; }
.piece-credit { margin-top: 18px; color: var(--text-3); font-size: 9px; }

dialog { color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: 7px; box-shadow: 0 18px 60px rgb(0 0 0 / 45%); }
dialog::backdrop { background: rgb(10 10 9 / 70%); backdrop-filter: blur(2px); }
.saved-dialog { width: min(560px, calc(100vw - 28px)); max-height: min(680px, calc(100vh - 28px)); padding: 17px; overflow: auto; }
.dialog-close { width: 38px; min-height: 38px; padding: 0; color: var(--text-2); background: transparent; border-color: var(--line); font-size: 23px; line-height: 1; }
.dialog-close:hover { color: var(--text); background: var(--panel-hover); }
.save-position-form { display: grid; gap: 6px; margin-top: 16px; padding: 12px 0; border-top: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); }
.save-position-form label { color: var(--text-2); font-size: 11px; font-weight: 650; }
.save-position-form p { margin: 0; color: var(--text-3); font-size: 10px; }
.save-position-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 7px; }
.saved-position-status { min-height: 28px; padding: 8px 0 2px; color: var(--text-3); font-size: 11px; }
.saved-positions-list { display: grid; border-top: 1px solid var(--line-soft); }
.saved-position-row { display: grid; grid-template-columns: minmax(0, 1fr) auto auto; align-items: center; gap: 6px; min-height: 53px; padding: 6px 0; border-bottom: 1px solid var(--line-soft); }
.saved-position-copy { min-width: 0; }
.saved-position-copy strong, .saved-position-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.saved-position-copy strong { font-size: 12px; }
.saved-position-copy small { color: var(--text-3); font-size: 10px; }
.saved-position-row button { min-height: 34px; padding: 5px 8px; border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; }
.saved-load { color: #17200f; background: var(--green); font-weight: 700; }
.saved-delete { color: var(--text-3); background: transparent; }
.saved-delete:hover { color: #efaaa4; border-color: #6e3934; }
.saved-empty { padding: 24px 5px; color: var(--text-3); font-size: 12px; text-align: center; }

.promotion-dialog { width: min(390px, calc(100vw - 28px)); padding: 16px; }
.promotion-dialog form { margin: 0; }
.promotion-options { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; margin-top: 16px; }
.promotion-option { min-height: 76px; padding: 5px; background: var(--panel-raised); border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; }
.promotion-option:hover { background: var(--panel-hover); border-color: var(--green); }
.promotion-option img { width: 100%; height: auto; }

.toast { position: fixed; z-index: 200; left: 50%; bottom: 20px; max-width: min(470px, calc(100vw - 28px)); padding: 9px 13px; color: var(--text); background: #141513; border: 1px solid #54514b; border-radius: var(--radius); box-shadow: 0 8px 30px rgb(0 0 0 / 35%); font-size: 12px; text-align: center; transform: translateX(-50%); animation: toast-in 160ms ease-out both; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.match-viewer-workspace {
  --board-size: min(61vw, calc(100vh - 245px), 700px);
  grid-template-columns: minmax(0, 1fr) minmax(360px, 420px);
  padding-top: 14px;
}
.match-board-pane .position-strip,
.match-board-pane .series-ledger,
.match-board-pane .board-toolbar,
.match-board-pane .boundary-notice,
.match-progress-wrap,
.match-board-pane .play-player-strip { width: var(--board-size); }
.match-board-pane .position-strip { padding-left: 0; }
.match-board-pane .series-ledger { padding-left: 0; }
.board-layout.match-board-layout {
  width: var(--board-size);
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}
.match-board-pane .board-toolbar,
.match-board-pane .boundary-notice { padding-left: 0; }
.match-board-pane .board-shell { touch-action: pan-y; }
.match-replay-toolbar { justify-content: center; padding-top: 8px; }
.match-play-button { min-width: 84px; justify-content: center; color: #d9efc3; background: #334329; }
.match-play-button.is-playing { color: #f4dfab; background: #4a4026; }
.match-progress-wrap { padding: 1px 2px 6px; }
.match-progress-label { display: flex; justify-content: space-between; gap: 12px; color: var(--text-3); font-size: 10px; }
.match-progress-label span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.match-progress-label span:last-child { text-align: right; }
#replay-progress { width: 100%; height: 20px; margin: 1px 0 0; accent-color: var(--green); cursor: pointer; }
.match-inspector { min-height: 590px; }
.match-panel { height: 100%; padding: 22px 22px 26px; overflow-y: auto; }
.match-heading { padding-bottom: 17px; border-bottom: 1px solid var(--line-soft); }
.match-heading h1 { margin: 2px 0 5px; font-size: 23px; line-height: 1.2; letter-spacing: -.025em; }
.match-heading p:last-child { margin: 0; color: var(--text-3); font-size: 12px; }
.match-picker { padding: 17px 0; border-bottom: 1px solid var(--line-soft); }
.match-game-controls { display: grid; grid-template-columns: 38px minmax(0, 1fr) 38px; gap: 6px; margin-top: 9px; }
.match-game-controls select { min-width: 0; height: 38px; padding: 0 30px 0 10px; color: var(--text); background: var(--panel-raised); border: 1px solid var(--line); border-radius: var(--radius); text-overflow: ellipsis; }
.match-game-controls .tree-tool { min-width: 0; padding: 5px; }
.match-pair-label { margin: 7px 1px 0; overflow: hidden; color: var(--text-3); font: 10px/1.4 var(--mono); text-overflow: ellipsis; white-space: nowrap; }
.match-status-card { display: grid; grid-template-columns: 20px minmax(0, 1fr); align-items: center; gap: 11px; margin: 17px 0; padding: 13px 14px; color: var(--text-2); background: var(--panel-raised); border: 1px solid var(--line); border-radius: var(--radius); }
.match-status-card strong,
.match-status-card small { display: block; }
.match-status-card strong { color: var(--text); font-size: 13px; }
.match-status-card small { margin-top: 3px; color: var(--text-3); font-size: 10px; line-height: 1.35; }
.match-status-mark { width: 11px; height: 11px; border: 3px solid currentColor; border-radius: 50%; }
.match-status-card.status-completed { color: #a9d978; background: #293922; border-color: #507238; }
.match-status-card.status-timeout { color: #e1bb60; background: #403821; border-color: #7d672f; }
.match-status-card.status-technical { color: #e28b83; background: #422a28; border-color: #77413c; }
.match-status-card.status-integrity { color: #d889b5; background: #3f2836; border-color: #71425d; }
.match-scoreboard { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; margin-bottom: 18px; }
.match-scoreboard div { min-width: 0; padding: 9px 8px; background: #242522; border: 1px solid var(--line-soft); border-radius: 4px; text-align: center; }
.match-scoreboard span,
.match-scoreboard strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.match-scoreboard span { color: var(--text-3); font-size: 9px; text-transform: uppercase; }
.match-scoreboard strong { margin-top: 3px; font: 700 14px/1.2 var(--mono); }
.match-series-section { padding-top: 2px; }
.match-series-list { display: grid; max-height: 250px; gap: 4px; margin-top: 9px; overflow-y: auto; }
.match-series-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 2px 10px; width: 100%; min-width: 0; padding: 8px 9px; color: var(--text-2); background: #252623; border: 1px solid var(--line-soft); border-radius: 4px; cursor: pointer; text-align: left; }
.match-series-row:hover,
.match-series-row.is-current { color: var(--text); background: var(--panel-raised); border-color: var(--green-deep); }
.match-series-row strong,
.match-series-row small { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.match-series-row strong { font-size: 11px; }
.match-series-row small { grid-column: 1; color: var(--text-3); font-size: 9px; }
.match-series-row > span { grid-row: 1 / 3; grid-column: 2; align-self: center; color: var(--green); }
.match-failure-details { margin-top: 14px; padding: 10px 11px; color: #e4c472; background: #37301f; border: 1px solid #67562a; border-radius: 4px; }
.match-failure-details summary { cursor: pointer; font-size: 11px; font-weight: 700; }
.match-failure-details p { margin: 8px 0 0; overflow-wrap: anywhere; color: #c9b98d; font: 9px/1.45 var(--mono); }
.match-provenance-details { margin-top: 15px; }
.match-provenance-details dl { display: grid; grid-template-columns: minmax(100px, auto) minmax(0, 1fr); gap: 6px 10px; margin: 10px 0 0; }
.match-provenance-details dt { color: var(--text-3); font-size: 9px; }
.match-provenance-details dd { min-width: 0; margin: 0; overflow: hidden; color: var(--text-2); font: 9px/1.35 var(--mono); text-overflow: ellipsis; white-space: nowrap; }

@keyframes spin { to { transform: rotate(1turn); } }
@keyframes panel-in { from { opacity: 0; transform: translateY(3px); } }
@keyframes results-in { from { opacity: 0; transform: translateY(4px); } }
@keyframes move-in { from { opacity: 0; transform: translateY(2px); } }
@keyframes arrow-in { from { opacity: 0; } }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%, 5px); } }
@keyframes live-pulse { 50% { box-shadow: 0 0 0 5px rgb(129 182 76 / 12%); } }
@keyframes thinking { from { height: 5px; opacity: .55; } to { height: 17px; opacity: 1; } }

@media (max-width: 1120px) {
  :root { --board-size: min(61vw, calc(100vh - 218px), 680px); }
  .analysis-workspace { grid-template-columns: minmax(0, 1fr) minmax(340px, 390px); gap: 18px; padding-right: 16px; padding-left: 16px; }
}

@media (max-width: 1030px) {
  :root { --board-size: min(calc(100vw - 72px), 720px); }
  .analysis-workspace { display: block; padding: 15px 14px 28px; }
  .board-pane { width: 100%; }
  .board-layout { width: min(100%, calc(var(--board-size) + 32px)); grid-template-columns: 26px minmax(0, 1fr); }
  .board-shell { width: 100%; height: auto; aspect-ratio: 1; }
  .eval-rail { height: auto; }
  .inspector { position: relative; top: auto; width: min(calc(var(--board-size) + 32px), 100%); height: auto; min-height: 520px; margin: 18px auto 0; }
  .tab-panel { height: auto; max-height: none; overflow: visible; }
  .analysis-tree { max-height: 420px; }
  .analysis-workspace.is-play-mode { --board-size: min(calc(100vw - 28px), 720px); }
  .match-viewer-workspace { --board-size: min(calc(100vw - 46px), 700px); }
  .match-board-layout,
  .match-board-pane .position-strip,
  .match-board-pane .series-ledger,
  .match-board-pane .board-toolbar,
  .match-board-pane .boundary-notice,
  .match-progress-wrap,
  .match-board-pane .play-player-strip { width: min(100%, var(--board-size)); }
  .is-play-mode .board-layout,
  .is-play-mode .series-ledger,
  .is-play-mode .play-player-strip { width: min(100%, var(--board-size)); }
}

@media (max-width: 560px) {
  :root { --board-size: calc(100vw - 48px); }
  .app-header { min-height: 48px; padding: 0 12px; }
  .brand { font-size: 14px; }
  .brand-long { display: none; }
  .brand-short { display: inline; }
  .mode-switch { min-width: 186px; }
  .mode-button { min-height: 30px; padding: 3px 7px; font-size: 10px; }
  .header-actions { gap: 8px; }
  .rules-label { display: none; }
  .engine-status { max-width: 150px; font-size: 10px; }
  .engine-status > span:last-child { display: none; }
  .analysis-workspace { padding: 10px 7px 22px; }
  .analysis-workspace.is-play-mode { --board-size: calc(100vw - 14px); padding-top: 6px; }
  .match-viewer-workspace { --board-size: calc(100vw - 14px); padding-top: 6px; }
  .match-viewer-page .header-actions { width: 0; visibility: hidden; }
  .match-board-pane .position-strip { padding-left: 0; }
  .match-board-pane .series-ledger,
  .match-board-pane .board-toolbar,
  .match-board-pane .boundary-notice { padding-left: 0; }
  .match-panel { padding: 17px 13px 20px; }
  .match-inspector { min-height: 0; }
  .play-player-strip { min-height: 47px; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 8px; padding-right: 2px; padding-left: 2px; }
  .player-color { width: 32px; height: 32px; }
  .player-color::before { font-size: 21px; }
  .player-clock { min-width: 62px; padding: 6px; font-size: 9px; }
  .position-strip { min-height: 54px; padding-right: 0; padding-left: 30px; }
  .series-heading h1 { font-size: 17px; }
  .series-subtitle { max-width: calc(100vw - 112px); }
  .series-number small { display: none; }
  .series-number b { font-size: 19px; }
  .series-ledger, .board-toolbar, .boundary-notice { padding-left: 30px; }
  .board-layout { width: min(100%, calc(var(--board-size) + 28px)); grid-template-columns: 24px minmax(0, 1fr); gap: 4px; }
  .eval-rail { width: 24px; }
  .tool-button { min-height: 40px; padding: 6px 8px; }
  .tool-button span { font-size: 11px; }
  .tool-button svg { width: 15px; height: 15px; }
  .toolbar-divider { margin: 0 1px; }
  .boundary-notice { min-height: 38px; padding-top: 6px; padding-right: 4px; }
  .inspector { width: 100%; margin-top: 12px; border-right: 0; border-left: 0; border-radius: 5px; }
  .is-play-mode .inspector { min-height: 0; }
  .play-panel { height: auto; padding: 17px 13px 20px; overflow: visible; }
  .play-heading h1 { font-size: 20px; }
  .tab-panel { padding: 14px 12px 22px; }
  .auto-analysis-copy h2 { font-size: 15px; }
  .analysis-toggle span { display: none; }
  .analysis-toggle { width: 40px; justify-content: center; }
  .preset-switch button { min-width: 78px; }
  .search-controls { grid-template-columns: 1fr; }
  .result-hero { align-items: flex-start; }
  .result-score { font-size: 19px; }
  .confidence { max-width: 145px; }
  .tree-toolbar { flex-wrap: nowrap; overflow-x: auto; }
  .tree-tool { flex: 0 0 auto; }
  .save-position-row { grid-template-columns: 1fr; }
  .save-position-row .primary { width: 100%; }
  .saved-position-row { grid-template-columns: minmax(0, 1fr) auto; }
  .saved-delete { grid-column: 2; }
}

@media (max-width: 370px) {
  :root { --board-size: calc(100vw - 42px); }
  .analysis-workspace { padding-right: 4px; padding-left: 4px; }
  .position-strip { padding-left: 26px; }
  .series-ledger, .board-toolbar, .boundary-notice { padding-left: 26px; }
  .board-layout { width: min(100%, calc(var(--board-size) + 25px)); grid-template-columns: 22px minmax(0, 1fr); gap: 3px; }
  .eval-rail { width: 22px; }
  .tool-button span { display: none; }
  .tool-button { width: 40px; justify-content: center; }
  .match-replay-toolbar .tool-button span:first-child { display: inline; }
  .match-replay-toolbar .toolbar-divider { display: none; }
  .continue-button { width: auto; }
  .continue-button span { display: inline; }
  .engine-status { max-width: 118px; }
  .app-header { padding-right: 8px; padding-left: 8px; }
  .brand { font-size: 12px; }
  .mode-switch { min-width: 172px; }
  .mode-button { padding-right: 7px; padding-left: 7px; }
  .analysis-workspace.is-play-mode { --board-size: calc(100vw - 8px); padding-right: 4px; padding-left: 4px; }
  .match-viewer-workspace { --board-size: calc(100vw - 8px); padding-right: 4px; padding-left: 4px; }
  .match-scoreboard { gap: 3px; }
  .match-scoreboard div { padding-right: 4px; padding-left: 4px; }
  .player-clock { min-width: 56px; }
  .side-option { grid-template-columns: 30px minmax(0, 1fr); padding-right: 5px; padding-left: 5px; }
  .play-strength-option { grid-template-columns: 20px minmax(0, 1fr); padding-right: 4px; padding-left: 4px; }
  .strength-mark { width: 19px; height: 19px; }
  .side-piece { width: 28px; height: 28px; font-size: 20px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
}