/* 布局：桌面端三栏（玩家 | 棋盘 | 棋子托盘），窄屏纵向堆叠；界面强调色随当前行棋方变化。默认浅色主题 */
:root {
  --bg: #eceef3;
  --surface: #f7f8fb;
  --raised: #ffffff;
  --ink: #1b2030;
  --ink-soft: #596175;
  --line: #d4d8e1;
  --board-frame: #cdd2dc;
  --board-cell: #e4e8ef;
  --board-groove: #c3c9d4;
  --p-blue: #2a63d6;
  --p-yellow: #eeb200;
  --p-red: #e03a2e;
  --p-green: #1f9a47;
  --p-violet: #7b4fd8;
  --p-orange: #ef7612;
  --danger: #c9362a;
  --shadow: 0 1px 2px rgba(27, 32, 48, .06), 0 6px 18px rgba(27, 32, 48, .07);
  --turn: var(--ink);
  color-scheme: light;

  --font-display: "ZCOOL QingKe HuangYou", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-ui: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Rubik", system-ui, sans-serif;

  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
}

/* 深色主题：只在设置里选了才用，不跟随系统 */
:root[data-scheme="dark"] {
  --bg: #10131a;
  --surface: #171b24;
  --raised: #1e2330;
  --ink: #e8ebf2;
  --ink-soft: #9aa2b4;
  --line: #2b3140;
  --board-frame: #222734;
  --board-cell: #191d27;
  --board-groove: #2d3342;
  --p-blue: #4a82f0;
  --p-yellow: #f4c12a;
  --p-red: #f0574b;
  --p-green: #33b65f;
  --p-violet: #9b74f1;
  --p-orange: #f8913a;
  --danger: #f06a5e;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { height: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

#app {
  height: 100%;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}

/* ---------- 通用控件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--raised);
  color: var(--ink);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: background-color .15s, border-color .15s, transform .08s;
  white-space: nowrap;
}
.btn:hover:not(:disabled) { border-color: var(--ink-soft); }
.btn:active:not(:disabled) { transform: translateY(1px); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--bg);
}
.btn.primary:hover:not(:disabled) { background: color-mix(in srgb, var(--ink) 85%, var(--turn)); }
.btn.ghost { background: transparent; border-color: transparent; }
.btn.ghost:hover:not(:disabled) { border-color: var(--line); background: var(--raised); }
.btn.big { min-height: 46px; padding: 0 26px; font-size: 16px; }
.btn.icon { min-width: 40px; padding: 0 10px; font-size: 18px; line-height: 1; }
.btn.icon svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.btn .mute { display: none; }
.btn[aria-pressed="false"] { color: var(--ink-soft); }
.btn[aria-pressed="false"] .wave { display: none; }
.btn[aria-pressed="false"] .mute { display: inline; }
.danger-text { color: var(--danger); }

:focus-visible {
  outline: 2px solid var(--turn);
  outline-offset: 2px;
}

input[type="text"], input[type="url"], input[type="password"], input[type="number"], select {
  min-height: 36px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--raised);
  color: var(--ink);
  font: inherit;
}
input[type="text"], input[type="url"], input[type="password"] { width: 100%; min-width: 0; }
input[type="text"]:disabled { color: var(--ink-soft); background: var(--surface); }

/* 分段选择 */
.seg {
  display: inline-flex;
  flex-wrap: wrap;
  padding: 3px;
  gap: 3px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
}
.seg label { position: relative; cursor: pointer; }
.seg input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.seg span {
  display: block;
  padding: 6px 12px;
  border-radius: 7px;
  color: var(--ink-soft);
  font-weight: 500;
  transition: background-color .15s, color .15s;
}
.seg input:checked + span {
  background: var(--raised);
  color: var(--ink);
  box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}
.seg input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 1px; }
.seg.small span { padding: 4px 9px; font-size: 13px; }

/* ---------- 开局设置 ---------- */
.setup {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
  gap: 40px;
  align-items: center;
  max-width: 1180px;
  margin: 0 auto;
  min-height: 100%;
  padding-block: 32px;
}

.setup-hero { display: grid; gap: 14px; justify-items: center; }

.logo {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(56px, 9vw, 104px);
  line-height: 1;
  letter-spacing: .04em;
  display: flex;
}
.logo-ch {
  color: var(--c);
  text-shadow: 0.035em 0.035em 0 color-mix(in srgb, var(--c) 45%, var(--ink));
}
.logo-ch:nth-child(2n) { transform: translateY(0.06em); }

.tagline {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
  letter-spacing: .06em;
}

.demo-frame {
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1;
}
.demo-frame canvas { width: 100%; height: 100%; display: block; }
.demo-label {
  position: absolute;
  right: 10px;
  bottom: -26px;
  font-size: 12px;
  color: var(--ink-soft);
  letter-spacing: .08em;
}

.setup-panel {
  display: grid;
  gap: 20px;
  padding: 24px;
  border-radius: var(--r-lg);
  background: var(--raised);
  box-shadow: var(--shadow);
  min-width: 0;
}

.field { display: grid; gap: 8px; min-width: 0; }
.field-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--ink-soft);
}
.field-label small { font-weight: 400; letter-spacing: .04em; margin-left: 6px; }

.presets { display: flex; flex-wrap: wrap; gap: 6px; }
.presets .btn { min-height: 32px; padding: 0 11px; font-size: 13px; }
.presets .btn.active { border-color: var(--ink); background: var(--surface); }

.seats { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.seat {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  grid-template-areas: "sw name type" "sw level level";
  column-gap: 10px;
  row-gap: 6px;
  align-items: center;
  padding: 8px 10px 8px 8px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
}
.seat.off { opacity: .55; }
.seat-swatch {
  grid-area: sw;
  align-self: stretch;
  border-radius: var(--r-sm);
  background: var(--c);
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-display);
  font-size: 20px;
  min-height: 34px;
  text-shadow: 0 1px 0 rgba(0, 0, 0, .25);
}
.seat-name { grid-area: name; }
.seat-type { grid-area: type; }
.seat-level { grid-area: level; display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; color: var(--ink-soft); font-size: 13px; }
.seat-level[hidden] { display: none !important; }

.options { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; }
.check { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.check input { width: 17px; height: 17px; accent-color: var(--ink); }
.inline-select { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.inline-select input { width: 9em; }

.form-error { margin: 0; color: var(--danger); font-weight: 500; }

.setup-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* ---------- 对局 ---------- */
.game {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 560px;
  padding-block: 10px 14px;
  gap: 10px;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}
.turn {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--turn) 12%, var(--raised));
  border: 1px solid color-mix(in srgb, var(--turn) 35%, var(--line));
  transition: background-color .25s, border-color .25s;
}
.turn-dot {
  flex: none;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: var(--turn);
}
.turn-text {
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.turn-move {
  margin-left: auto;
  flex: none;
  color: var(--ink-soft);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
}
.top-actions { display: flex; gap: 6px; }

.game-layout {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr) 300px;
  grid-template-rows: minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

/* 玩家卡片 */
.players { display: grid; gap: 8px; align-content: start; min-width: 0; max-height: 100%; overflow: auto; }
.pcard {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 4px 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--r-md);
  background: var(--raised);
  border: 1px solid var(--line);
  transition: border-color .2s, box-shadow .2s, opacity .2s;
}
.pcard.current {
  border-color: var(--c);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--c) 30%, transparent);
}
.pcard.done { opacity: .62; }
.pcard-swatch {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: var(--c);
  box-shadow: inset -2px -2px 0 rgba(0, 0, 0, .18), inset 2px 2px 0 rgba(255, 255, 255, .3);
}
.pcard-name {
  min-width: 0;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.pcard-name small {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  font-weight: 400;
  color: var(--ink-soft);
  font-size: 12px;
}
.pcard-left {
  display: flex;
  align-items: baseline;
  gap: 3px;
  font-size: 12px;
  color: var(--ink-soft);
  white-space: nowrap;
}
.pcard-left b {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.1;
  color: var(--ink);
}
.pcard-bar {
  grid-column: 1 / -1;
  height: 4px;
  border-radius: 2px;
  background: var(--surface);
  overflow: hidden;
}
.pcard-bar i {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  background: var(--c);
  transition: width .3s;
}
.pcard { cursor: pointer; }
.pcard.viewing { outline: 2px dashed var(--c); outline-offset: 2px; }
.pcard-pieces { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 2px; }
.pcard-pieces i { display: block; width: 17px; height: 17px; }
.pcard-pieces i svg { display: block; width: 100%; height: 100%; }
.pcard-pieces i.used { opacity: .13; }
.dock-head .btn { min-height: 26px; padding: 0 8px; font-size: 12px; }
.pcard-state {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--ink-soft);
  min-height: 18px;
}
.pcard.current .pcard-state { color: var(--ink); font-weight: 500; }
.pcard-note {
  grid-column: 1 / -1;
  font-size: 12px;
  line-height: 1.4;
  color: var(--ink-soft);
  border-left: 3px solid var(--c);
  padding-left: 7px;
  overflow-wrap: anywhere;
}

/* 大模型设置 */
.btn.small { min-height: 30px; padding: 0 10px; font-size: 13px; }
.llm-form { display: grid; gap: 14px; }
.llm-fields { display: grid; gap: 6px; }
.llm-fields .field-label { margin-top: 4px; }
.llm-fields code { font-size: 12px; }
.llm-timeout input { width: 5.5em; }
.llm-presets { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.llm-profiles { display: grid; gap: 6px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.llm-profile-bar { display: flex; gap: 8px; align-items: center; }
.llm-profile-bar select { flex: 1; min-width: 0; }
.seat-model { display: inline-flex; align-items: center; gap: 6px; margin-left: 8px; white-space: nowrap; }
.seat-model select { min-height: 30px; max-width: 9em; font-size: 13px; }
.field-note.warn { color: var(--danger); }
.llm-status { margin: 0; min-height: 1.4em; font-size: 13px; color: var(--ink-soft); overflow-wrap: anywhere; }
.llm-status.ok { color: var(--p-green); }
.llm-status.err { color: var(--danger); }
.thinking::after {
  content: "";
  display: inline-block;
  width: 1.2em;
  text-align: left;
  animation: dots 1s steps(4) infinite;
}
@keyframes dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75% { content: "..."; }
}

/* 棋盘 */
.board-area {
  min-width: 0;
  min-height: 0;
  height: 100%;
  display: grid;
  place-items: start center;
  container-type: size;
}
.board-wrap {
  position: relative;
  width: min(100cqw, 100cqh);
  aspect-ratio: 1;
  max-width: 100%;
}
.board-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
  border-radius: var(--r-lg);
  cursor: crosshair;
}
.board-wrap canvas:focus-visible { outline-offset: 3px; }

.toast {
  position: absolute;
  left: 50%;
  top: 14px;
  transform: translateX(-50%);
  max-width: calc(100% - 28px);
  padding: 8px 14px;
  border-radius: 999px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 500;
  font-size: 13px;
  box-shadow: var(--shadow);
  pointer-events: none;
  animation: toast-in .2s ease-out;
  text-align: center;
}
.toast.warn { background: var(--danger); color: #fff; }
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, -6px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}

/* 托盘 */
.dock {
  display: grid;
  gap: 10px;
  align-content: start;
  min-width: 0;
  padding: 12px;
  border-radius: var(--r-lg);
  background: var(--raised);
  border: 1px solid var(--line);
  max-height: 100%;
  overflow: auto;
}
.dock.inactive .tray, .dock.inactive .selected { opacity: .55; }
.dock-head { display: flex; align-items: baseline; gap: 8px; }
.dock-title { font-weight: 600; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.dock-count {
  margin-left: auto;
  color: var(--ink-soft);
  font-size: 12px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.selected {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}
.sel-preview {
  width: 88px;
  height: 88px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px dashed var(--line);
  display: grid;
  place-items: center;
  color: var(--ink-soft);
  font-size: 12px;
  text-align: center;
  padding: 6px;
}
.sel-preview svg { width: 100%; height: 100%; }
.sel-controls { display: flex; flex-wrap: wrap; gap: 6px; }
.sel-controls .primary { flex: 1; min-width: 72px; }

.tray {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(46px, 1fr));
  gap: 5px;
}
.piece-btn {
  position: relative;
  aspect-ratio: 1;
  padding: 3px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  background: var(--surface);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: background-color .12s, border-color .12s, transform .12s;
}
.piece-btn svg { width: 100%; height: 100%; display: block; }
.piece-btn:hover:not(:disabled) { border-color: var(--line); transform: translateY(-1px); }
.piece-btn[aria-selected="true"] {
  border-color: var(--turn);
  background: color-mix(in srgb, var(--turn) 14%, var(--surface));
  box-shadow: 0 0 0 1px var(--turn);
}
.piece-btn.used { background: transparent; cursor: default; }
.piece-btn.used svg { opacity: .16; }
.piece-btn.stuck svg { opacity: .4; }
.piece-btn.stuck::after {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px dashed var(--ink-soft);
  border-radius: 4px;
  opacity: .5;
}
.piece-btn:disabled { cursor: default; }

.keys { margin: 0; color: var(--ink-soft); font-size: 12px; }

/* ---------- 弹窗 ---------- */
.dialog {
  width: min(520px, calc(100vw - 32px));
  padding: 24px;
  border: none;
  border-radius: var(--r-lg);
  background: var(--raised);
  color: var(--ink);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
}
.dialog.small { width: min(400px, calc(100vw - 32px)); }
.dialog::backdrop { background: rgba(12, 14, 20, .45); }
.dialog-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 30px;
  line-height: 1.15;
  text-wrap: balance;
}
.dialog p { margin: 0 0 12px; }
.dialog-note { color: var(--ink-soft); font-size: 12px; }
.dialog-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; margin-top: 18px; }

.results { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.results th {
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: .06em;
  padding: 6px 8px;
  border-bottom: 1px solid var(--line);
}
.results td { padding: 9px 8px; border-bottom: 1px solid var(--line); }
.results td.num, .results th.num { text-align: right; font-family: var(--font-num); }
.results td.left { font-weight: 700; font-size: 16px; white-space: nowrap; }
.results td.left small { display: block; font-family: var(--font-ui); font-weight: 400; font-size: 11px; color: var(--ink-soft); }
.results .who { display: flex; align-items: center; gap: 8px; min-width: 0; }
.results .who i {
  flex: none;
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--c);
}
.results .bonus { display: block; font-size: 11px; color: var(--ink-soft); }
.rank {
  display: inline-grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--surface);
  font-family: var(--font-num);
  font-weight: 700;
}
.rank.first { background: var(--p-yellow); color: #3a2c00; }

/* 对局记录 */
.record-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.record-label { font-size: 12px; font-weight: 600; color: var(--ink-soft); letter-spacing: .06em; }
.record-msg { font-size: 12px; color: var(--ink-soft); }
.record-msg.block { margin: 0 0 10px; padding: 8px 10px; border-radius: var(--r-sm); background: var(--surface); color: var(--ink); }
.dialog.wide { width: min(640px, calc(100vw - 32px)); }
.records {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: min(55vh, 460px);
  overflow: auto;
  border-top: 1px solid var(--line);
}
.records-empty { padding: 18px 4px; color: var(--ink-soft); font-size: 13px; }
.record-item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
}
.record-main { flex: 1 1 260px; min-width: 0; display: grid; gap: 5px; }
.record-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; }
.record-head span, .record-main small { color: var(--ink-soft); font-size: 12px; font-family: var(--font-num); }
.record-main small { font-family: var(--font-ui); }
.record-who { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 13px; }
.record-who .who { display: inline-flex; align-items: center; gap: 5px; min-width: 0; }
.record-who .who i { flex: none; width: 10px; height: 10px; border-radius: 2px; background: var(--c); }
.record-btns { display: flex; gap: 6px; }

/* 回放面板（替换托盘） */
.dock.replaying .selected, .dock.replaying .tray, .dock.replaying #keys-help { display: none; }
.replay-panel { display: grid; gap: 10px; min-width: 0; }
.replay-controls { display: flex; gap: 6px; }
.replay-controls .rp-play { flex: 1; min-width: 5.5em; }
.replay-panel input[type="range"] { width: 100%; accent-color: var(--ink); }
.replay-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; flex-wrap: wrap; }
.replay-moves {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 46vh;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
}
.replay-moves button {
  display: grid;
  grid-template-columns: 2.4em 10px minmax(0, 1fr) auto;
  align-items: center;
  gap: 2px 8px;
  width: 100%;
  padding: 6px 10px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-size: 13px;
  text-align: left;
  cursor: pointer;
}
.replay-moves li:last-child button { border-bottom: 0; }
.replay-moves button:hover { background: var(--raised); }
.replay-moves button[aria-current] { background: color-mix(in srgb, var(--c, var(--ink)) 16%, var(--raised)); font-weight: 600; }
.replay-moves i { width: 10px; height: 10px; border-radius: 2px; background: var(--c); }
.rp-n { color: var(--ink-soft); font-family: var(--font-num); font-variant-numeric: tabular-nums; font-size: 12px; }
.rp-who { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rp-what { color: var(--ink-soft); white-space: nowrap; }
.rp-note { grid-column: 3 / -1; font-size: 12px; font-weight: 400; color: var(--ink-soft); }

.rules ol { padding-left: 1.4em; margin: 0 0 12px; display: grid; gap: 4px; }
.rules p { max-width: 65ch; }

/* 立体视角按钮 */
.cam-ctl {
  position: absolute;
  left: 8px;
  top: 8px;
  display: grid;
  gap: 4px;
  padding: 4px;
  border-radius: var(--r-md);
  background: color-mix(in srgb, var(--raised) 86%, transparent);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.cam-ctl .btn.icon { min-width: 34px; min-height: 32px; padding: 0 6px; }
.cam-row { display: flex; gap: 4px; align-items: center; }
.btn.toggle[aria-pressed="false"] { color: var(--ink-soft); }
.btn.toggle[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.layer-ctl { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--ink-soft); white-space: nowrap; padding-right: 4px; }
.layer-ctl input { width: 70px; accent-color: var(--ink); }
.layer-ctl span { min-width: 3.6em; font-variant-numeric: tabular-nums; }
.board-wrap.cube .toast { top: auto; bottom: 14px; }

/* ---------- 本地 / 联机 切换 ---------- */
.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--line);
  margin: -6px -4px 0;
}
.tab {
  padding: 8px 4px 10px;
  border: none;
  border-bottom: 3px solid transparent;
  background: none;
  color: var(--ink-soft);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: -1px;
}
.tab[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--ink); }
.tab:hover { color: var(--ink); }
.panel-body { display: grid; gap: 20px; min-width: 0; }
.field-note { margin: 0; color: var(--ink-soft); font-size: 12px; }

.online-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.online-card {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 14px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
}
.online-card p { margin: 0; color: var(--ink-soft); font-size: 13px; }
.online-card .btn { justify-self: start; }
.join-row { display: flex; gap: 6px; }
.join-row input {
  flex: 1;
  font-family: var(--font-num);
  font-size: 18px;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.online-note { margin: 0; color: var(--ink-soft); font-size: 13px; max-width: 60ch; }
.online-note code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12px; background: var(--surface); padding: 1px 5px; border-radius: 4px; }

/* ---------- 联机房间 ---------- */
.lobby {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 1000px;
  margin: 0 auto;
  min-height: 100%;
  padding-block: 10px 24px;
}
.room-code {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 auto;
}
.room-code b {
  font-family: var(--font-num);
  font-size: 26px;
  letter-spacing: .18em;
  font-variant-numeric: tabular-nums;
}
.conn { font-size: 12px; color: var(--ink-soft); white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }
.conn::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--p-green); }
.conn.off::before { background: var(--danger); }
.lobby-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 16px;
  align-items: start;
}
.lobby-panel, .lobby-side {
  display: grid;
  gap: 18px;
  padding: 20px;
  border-radius: var(--r-lg);
  background: var(--raised);
  box-shadow: var(--shadow);
  min-width: 0;
}
.lobby-side { gap: 10px; }
.lobby-hint { margin: 0; color: var(--ink-soft); }
.lobby-wait { color: var(--ink-soft); font-size: 13px; }
.lobby-seat { grid-template-columns: 34px minmax(0, 1fr) auto; grid-template-areas: "sw name type" "sw level level"; }
.ls-main { grid-area: name; min-width: 0; }
.ls-main b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ls-main small { color: var(--ink-soft); font-size: 12px; }
.ls-actions { grid-area: type; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.ls-actions .btn { min-height: 30px; padding: 0 10px; font-size: 13px; }
.seat.mine { border-color: var(--c); box-shadow: 0 0 0 1px var(--c); }
.people { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.people li { display: flex; align-items: center; gap: 8px; min-width: 0; }
.people li span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.people li i { flex: none; width: 10px; height: 10px; border-radius: 3px; background: var(--c, var(--ink-soft)); }
.people small { color: var(--ink-soft); margin-left: auto; flex: none; }

/* 对局里的联机标识 */
.room-chip {
  flex: none;
  font-size: 12px;
  color: var(--ink-soft);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--raised);
  white-space: nowrap;
}
.room-chip.off { color: var(--danger); border-color: var(--danger); }
.pcard-online {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-right: 4px;
  vertical-align: 1px;
  background: var(--p-green);
}
.pcard-online.off { background: var(--ink-soft); opacity: .6; }
.pcard-state .btn { min-height: 24px; padding: 0 8px; font-size: 12px; margin-left: 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .game-layout {
    grid-template-columns: minmax(0, 1fr) 280px;
    grid-template-rows: auto minmax(0, 1fr);
  }
  .players {
    grid-column: 1 / -1;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  }
  .pcard-state { display: none; }
  .pcard-note { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
}

@media (max-width: 900px) {
  .setup { grid-template-columns: minmax(0, 1fr); gap: 20px; padding-block: 20px; }
  .lobby-body { grid-template-columns: minmax(0, 1fr); }
  .demo-frame { width: min(100%, 300px); }
  .demo-label { bottom: -22px; }
}

@media (max-width: 720px) {
  .game { height: auto; min-height: 100%; }
  .players { max-height: none; overflow: visible; }
  .game-layout {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: none;
  }
  .players {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
  }
  .pcard { padding: 7px 9px; gap: 2px 8px; }
  .pcard-pieces i { width: 14px; height: 14px; }
  .pcard-left b { font-size: 15px; }
  .board-area { container-type: normal; height: auto; }
  .board-wrap { width: 100%; }
  .dock { max-height: none; overflow: visible; }
  .replay-moves { max-height: 34vh; }
  .keys { display: none; }
  .topbar { flex-wrap: wrap; gap: 8px; }
  .turn { order: 3; flex-basis: 100%; }
  .top-actions { margin-left: auto; }
  .top-actions .btn { padding: 0 10px; }
  .logo { font-size: 64px; }
}

@media (max-width: 560px) {
  .online-grid { grid-template-columns: minmax(0, 1fr); }
  .room-code b { font-size: 20px; }
  .lobby .topbar { flex-wrap: wrap; }
  .room-chip { order: 4; }
}

@media (max-width: 420px) {
  .seat { grid-template-areas: "sw name name" "sw type type" "sw level level"; grid-template-columns: 30px minmax(0, 1fr) auto; }
  .seat-type { justify-self: start; }
  .setup-panel { padding: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* ---------- 语言 ---------- */
:root:lang(ja), :root:lang(ko), :root:lang(ru) { --font-display: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic", "Malgun Gothic", "Noto Sans", sans-serif; }
.logo.words { font-size: clamp(48px, 7vw, 88px); letter-spacing: .01em; flex-wrap: wrap; }
.panel-top { display: flex; align-items: flex-end; gap: 12px; }
.panel-top .tabs { flex: 1; min-width: 0; }
.lang-pick {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 6px;
  color: var(--ink-soft);
}
.lang-pick svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.lang-pick select { max-width: 9.5em; }
.help-btn { font-weight: 700; font-family: var(--font-num); }

/* ---------- 新手引导 ---------- */
dialog.tour {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
  overflow: hidden;
  color: var(--ink);
}
dialog.tour::backdrop { background: transparent; }
dialog.tour.dim { background: rgba(12, 14, 20, .55); }
.tour-spot {
  position: fixed;
  border-radius: var(--r-lg);
  box-shadow: 0 0 0 9999px rgba(12, 14, 20, .55);
  outline: 2px solid color-mix(in srgb, var(--tc, var(--ink)) 70%, #fff);
  pointer-events: none;
  transition: left .2s, top .2s, width .2s, height .2s;
}
.tour-card {
  position: fixed;
  width: min(380px, calc(100vw - 24px));
  max-height: calc(100vh - 24px);
  overflow: auto;
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  border-radius: var(--r-lg);
  background: var(--raised);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
  border-top: 4px solid var(--tc, var(--ink));
}
.tour-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.tour-step { font-family: var(--font-num); font-size: 12px; color: var(--ink-soft); }
.tour-title { margin: 0; font-family: var(--font-display); font-weight: 400; font-size: 24px; line-height: 1.2; }
.tour-body { display: grid; gap: 8px; font-size: 14px; line-height: 1.55; }
.tour-body p { margin: 0; }
.tour-extra { color: var(--ink-soft); font-size: 13px; }
.tour-actions { display: flex; justify-content: flex-end; gap: 8px; }
.tour-dgs { display: flex; flex-wrap: wrap; gap: 8px; }
.tour-dg {
  flex: 1 1 100px;
  min-width: 0;
  margin: 0;
  padding: 8px;
  border-radius: var(--r-md);
  background: var(--surface);
  border: 1px solid var(--line);
  display: grid;
  gap: 4px;
  justify-items: center;
}
.tour-dg svg { width: 100%; height: 92px; }
.tour-dg figcaption { font-size: 12px; text-align: center; line-height: 1.3; }
.tour-dg.ok figcaption b { color: var(--p-green); }
.tour-dg.bad figcaption b { color: var(--danger); }
.tour-dg polygon { stroke: var(--surface); stroke-width: .05; stroke-linejoin: round; }
.tour-dg .dg-empty { fill: var(--board-cell); stroke: var(--board-groove); stroke-width: .03; }
.tour-dg .dg-own { fill: var(--tc, var(--p-blue)); }
.tour-dg .dg-new { fill: color-mix(in srgb, var(--tc, var(--p-blue)) 55%, var(--surface)); }
.tour-dg .dg-other { fill: var(--ink-soft); }
.tour-dg .dg-face-t { filter: brightness(1.12); }
.tour-dg .dg-face-l { filter: brightness(.82); }
.tour-dg .dg-face-r { filter: brightness(.68); }
.tour-dg polygon.dg-face-t, .tour-dg polygon.dg-face-l, .tour-dg polygon.dg-face-r { stroke: rgba(0, 0, 0, .35); stroke-width: .03; }
.tour-dg .dg-mark { fill: none; stroke-width: .09; }
.tour-dg.ok .dg-mark { stroke: var(--p-green); }
.tour-dg.bad .dg-mark { stroke: var(--danger); }
.tour-legend { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 6px; font-size: 12px; color: var(--ink-soft); }
.tour-legend .lg { display: inline-block; width: 11px; height: 11px; border-radius: 2px; margin-left: 6px; }
.tour-legend .lg:first-child { margin-left: 0; }
.tour-legend .lg.own { background: var(--tc, var(--p-blue)); }
.tour-legend .lg.new { background: color-mix(in srgb, var(--tc, var(--p-blue)) 55%, var(--surface)); }
.tour-legend .lg.other { background: var(--ink-soft); }
@media (max-width: 720px) {
  .tour-title { font-size: 20px; }
  .tour-dg svg { height: 76px; }
}