:root {
  --game-bg: oklch(97% 0.03 85);
  --game-surface: oklch(99% 0.01 85);
  --game-primary: oklch(70% 0.19 45);
  --game-secondary: oklch(75% 0.15 200);
  --game-success: oklch(78% 0.17 145);
  --game-danger: oklch(68% 0.19 25);
  --game-star: oklch(85% 0.16 95);
  --radius-card: 20px;
  --radius-btn: 999px;
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast: 150ms;
  --duration-normal: 320ms;
}

body.game-body {
  margin: 0;
  min-height: 100dvh;
  background: var(--game-bg);
  font-family: system-ui, -apple-system, 'PingFang SC', sans-serif;
  color: oklch(28% 0.02 85);
}

/* 手机:单列限宽。桌面(≥900px):游戏区放大到 960px,学词视图场景图+词卡双栏并排。 */
#game-root {
  max-width: 480px;
  margin: 0 auto;
  min-height: 100dvh;
}

@media (min-width: 560px) {
  body.game-body { background: oklch(94% 0.03 85); }
  #game-root {
    background: var(--game-bg);
    box-shadow: 0 0 0 1px oklch(88% 0.03 85), 0 18px 60px oklch(70% 0.05 85 / 0.25);
  }
}

@media (min-width: 900px) {
  #game-root {
    max-width: 960px;
    padding-bottom: 32px;
    display: block;
  }
  /* 学词:场景图左、词卡右,标题/计数横贯顶部 */
  #game-root:has(.game-scene) {
    display: grid;
    grid-template-columns: 1fr 340px;
    grid-auto-rows: min-content;
    column-gap: 20px;
    align-content: start;
  }
  #game-root:has(.game-scene) .game-view-title,
  #game-root:has(.game-scene) .game-learn-counter { grid-column: 1 / -1; }
  #game-root:has(.game-scene) .game-scene { grid-column: 1; margin-right: 0; }
  #game-root:has(.game-scene) .game-learn-card { grid-column: 2; margin-left: 0; align-self: start; }
  #game-root:has(.game-scene) > .game-btn { grid-column: 2; justify-self: stretch; margin: 12px 16px 0 0; }
  /* 连连看/速答:更大的格子与题面 */
  .game-board { margin: 8px 24px; gap: 10px; }
  .game-cell { min-height: 72px; font-size: 16px; }
  .game-quiz-prompt { font-size: 44px; }
  .game-learn-photo { max-height: 260px; }
}

.game-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  max-height: 52dvh;
}

.game-stage canvas { display: block; width: 100%; height: 100%; }

.game-btn {
  border: 0;
  border-radius: var(--radius-btn);
  padding: 14px 28px;
  min-height: 48px;
  font-size: 17px;
  font-weight: 600;
  color: oklch(99% 0 0);
  background: var(--game-primary);
  box-shadow: 0 6px 0 oklch(58% 0.19 45), 0 10px 22px oklch(70% 0.19 45 / 0.3);
  transition: transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-fast) ease;
}

.game-btn:active {
  transform: translateY(4px);
  box-shadow: 0 2px 0 oklch(58% 0.19 45), 0 4px 10px oklch(70% 0.19 45 / 0.25);
}

.game-btn:focus-visible {
  outline: 3px solid var(--game-secondary);
  outline-offset: 3px;
}

.game-card {
  background: var(--game-surface);
  border-radius: var(--radius-card);
  padding: 18px;
  box-shadow: 0 2px 4px oklch(70% 0.05 85 / 0.18), 0 12px 28px oklch(70% 0.05 85 / 0.16);
}

/* WebGL 不可用时的零资产剪影降级(character-stage.js renderFallback 使用) */
.game-figure-fallback {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
}

.game-figure-part {
  position: absolute;
  border-radius: 12px;
  transition: filter var(--duration-normal, 300ms) var(--ease-spring),
              opacity var(--duration-normal, 300ms) var(--ease-spring),
              transform var(--duration-normal, 300ms) var(--ease-spring);
}

.game-figure-part[data-unlocked='false'] {
  filter: grayscale(1) brightness(0.7);
  opacity: 0.35;
  transform: scale(0.9);
}

.game-figure-part[data-unlocked='true'] {
  filter: none;
  opacity: 1;
  transform: scale(1);
}

.game-figure-fallback[data-revived='true'] .game-figure-part {
  filter: drop-shadow(0 0 8px var(--game-star));
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

.game-view-title { margin: 20px 16px 12px; font-size: 22px; font-weight: 800; }
.game-error, .game-loading { margin: 40px 16px; text-align: center; color: oklch(45% 0.02 85); }

.game-btn--ghost {
  color: var(--game-primary);
  background: var(--game-surface);
  box-shadow: inset 0 0 0 2px var(--game-primary);
}

/* 关卡地图:纵向蜿蜒路径,靠 nth-child 左右错位造出蛇形,不用绝对定位 */
.game-map-title { margin: 24px 16px 4px; font-size: 26px; font-weight: 800; }

/* 六章切换条:横向滚动,当前章高亮,未到章上锁置灰 */
.game-chapter-tabs {
  display: flex;
  gap: 8px;
  margin: 8px 16px 4px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}
.game-chapter-tab {
  flex: 0 0 auto;
  border: 0;
  border-radius: 999px;
  min-height: 40px;
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--game-primary);
  background: var(--game-surface);
  box-shadow: inset 0 0 0 2px oklch(88% 0.05 45);
  transition: transform var(--duration-fast) var(--ease-spring);
}
.game-chapter-tab[data-active='true'] {
  color: oklch(99% 0 0);
  background: var(--game-primary);
  box-shadow: 0 4px 0 oklch(58% 0.19 45);
}
.game-chapter-tab:disabled { color: oklch(62% 0.02 85); box-shadow: inset 0 0 0 2px oklch(88% 0.02 85); }
.game-chapter-tab:focus-visible { outline: 3px solid var(--game-secondary); outline-offset: 2px; }

.game-result-hint {
  margin: 10px 20px;
  padding: 12px 16px;
  border-radius: 14px;
  background: oklch(95% 0.06 95);
  color: oklch(45% 0.1 60);
  font-size: 15px;
  font-weight: 600;
  text-align: center;
}
.game-map-stars { margin: 0 16px 20px; color: var(--game-star); font-weight: 700; }

.game-node {
  display: block;
  width: 132px;
  min-height: 64px;
  margin: 14px 0;
  border: 0;
  border-radius: var(--radius-card);
  font-size: 16px;
  font-weight: 700;
  color: oklch(99% 0 0);
  background: var(--game-secondary);
  box-shadow: 0 6px 0 oklch(60% 0.15 200);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.game-node:nth-child(odd) { margin-left: 22%; }
.game-node:nth-child(even) { margin-left: 48%; }
.game-node:active { transform: translateY(4px); }
.game-node:focus-visible { outline: 3px solid var(--game-primary); outline-offset: 3px; }
.game-node:disabled { background: oklch(82% 0.02 85); box-shadow: none; color: oklch(52% 0.02 85); }

/* 当前关呼吸光效 */
.game-node[data-current='true'] {
  background: var(--game-primary);
  box-shadow: 0 6px 0 oklch(58% 0.19 45);
  animation: game-breathe 2.4s ease-in-out infinite;
}

@keyframes game-breathe {
  0%, 100% { transform: scale(1); filter: brightness(1); }
  50% { transform: scale(1.06); filter: brightness(1.12); }
}

.game-node__gate { display: block; font-size: 12px; font-weight: 500; opacity: 0.85; }

/* 学:词卡 */
.game-learn-counter { margin: 0 16px; color: oklch(52% 0.02 85); }
.game-learn-card { margin: 12px 16px; text-align: center; }
.game-learn-emoji { margin: 4px 0 0; font-size: 64px; line-height: 1.15; }
.game-learn-photo {
  display: block;
  width: 100%;
  max-height: 190px;
  object-fit: cover;
  border-radius: 14px;
  margin: 0 0 10px;
}

/* 整体场景图(languageguide 式):全景常驻,标记脉冲定位当前词 */
.game-scene {
  position: relative;
  display: block;
  width: calc(100% - 32px);
  margin: 4px 16px 12px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-card);
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 2px 4px oklch(70% 0.05 85 / 0.18), 0 12px 28px oklch(70% 0.05 85 / 0.16);
}
.game-scene:focus-visible { outline: 3px solid var(--game-secondary); outline-offset: 3px; }
.game-scene__img { display: block; width: 100%; height: auto; }
.game-scene__marker {
  position: absolute;
  width: 34px;
  height: 34px;
  margin: -17px 0 0 -17px;
  border: 4px solid var(--game-danger);
  border-radius: 50%;
  background: oklch(68% 0.19 25 / 0.18);
  box-shadow: 0 0 0 3px oklch(99% 0.01 85 / 0.85);
  pointer-events: none;
  transition: left var(--duration-normal) var(--ease-spring), top var(--duration-normal) var(--ease-spring);
}
.game-scene__marker--pulse { animation: game-marker-pulse 1.1s ease-out 2; }
@keyframes game-marker-pulse {
  0% { transform: scale(1); }
  40% { transform: scale(1.45); }
  100% { transform: scale(1); }
}
.game-learn-art { display: block; width: 88px; height: 88px; margin: 6px auto 0; font-size: 64px; line-height: 88px; }
.game-cell__art { display: block; width: 30px; height: 30px; margin: 0 auto 2px; font-size: 24px; line-height: 30px; }
.game-cell__photo { display: block; width: 46px; height: 34px; margin: 0 auto 3px; object-fit: cover; border-radius: 6px; }
.game-spell-art { display: inline-block; width: 30px; height: 30px; margin-right: 8px; vertical-align: -6px; font-size: 24px; line-height: 30px; }
.game-spell-photo { display: inline-block; width: 48px; height: 36px; margin-right: 8px; object-fit: cover; border-radius: 6px; vertical-align: -10px; }
.game-learn-word { margin: 8px 0 4px; font-size: 40px; font-weight: 800; letter-spacing: 0.02em; }
.game-learn-ipa { margin: 0; color: oklch(52% 0.02 85); font-size: 15px; }
.game-learn-zh { margin: 8px 0 16px; font-size: 20px; }

/* 连连看棋盘:6 列 × 4 行,cell 用 gridArea 定位 */
.game-timer { margin: 0 16px; font-weight: 700; color: var(--game-danger); }
.game-combo { margin: 4px 16px; min-height: 22px; font-weight: 800; color: var(--game-star); opacity: 0; }
.game-combo[data-active='true'] { opacity: 1; animation: game-pop var(--duration-normal) var(--ease-spring); }

@keyframes game-pop {
  from { transform: scale(0.6); }
  to { transform: scale(1); }
}

/* 行数随词数变(8-10 词 → 4-5 行),所以只固定列数,行高由 auto-rows 兜底。 */
.game-board {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(56px, auto);
  gap: 6px;
  margin: 8px 12px;
}

.game-board[data-shake='true'] { animation: game-shake 0.5s ease; }

@keyframes game-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-7px); }
  40% { transform: translateX(7px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

.game-cell {
  position: relative;
  min-height: 56px;
  padding: 4px;
  border: 0;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 600;
  background: var(--game-surface);
  box-shadow: 0 3px 0 oklch(88% 0.03 85);
  transition: transform var(--duration-fast) var(--ease-spring),
              opacity var(--duration-fast) ease;
}

.game-cell[data-picked='true'] { transform: scale(1.08); box-shadow: 0 0 0 3px var(--game-primary); }
.game-cell:focus-visible { outline: 3px solid var(--game-primary); outline-offset: 2px; }
.game-cell__hint {
  position: absolute;
  inset-inline: 0;
  bottom: 2px;
  font-size: 11px;
  font-weight: 500;
  color: var(--game-secondary);
}

/* 拼写工坊 */
.game-spell-zh { margin: 12px 16px 4px; font-size: 20px; text-align: center; }
.game-spell-slots {
  margin: 12px 16px;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-align: center;
}

.game-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin: 16px;
}

.game-tiles[data-shake='true'] { animation: game-shake 0.5s ease; }

.game-tile {
  width: 48px;
  min-height: 48px;
  border: 0;
  border-radius: 12px;
  font-size: 22px;
  font-weight: 800;
  text-transform: uppercase;
  background: var(--game-surface);
  box-shadow: 0 4px 0 oklch(88% 0.03 85);
  transition: transform var(--duration-fast) var(--ease-spring);
}

.game-tile:active { transform: translateY(3px); }
.game-tile:focus-visible { outline: 3px solid var(--game-primary); outline-offset: 2px; }

/* 速答:倒计时条由 JS 设 animation-duration */
.game-countdown {
  height: 8px;
  margin: 0 auto 16px;
  max-width: 420px;
  width: calc(100% - 32px);
  border-radius: 999px;
  background: linear-gradient(90deg, var(--game-success), var(--game-star), var(--game-danger));
  transform-origin: left center;
  animation-name: game-countdown-shrink;
  animation-timing-function: linear;
  animation-fill-mode: forwards;
}

@media (min-width: 900px) {
  .game-countdown { max-width: 720px; }
}

@keyframes game-countdown-shrink {
  from { transform: scaleX(1); }
  to { transform: scaleX(0); }
}

.game-quiz-prompt { margin: 8px 16px 20px; font-size: 34px; font-weight: 800; text-align: center; }

/* 选项:白底卡片 + A/B/C/D 字母徽章(CSS 计数器,不动 JS),
   居中限宽——满宽橙色长条在宽屏上像四根香肠。 */
.game-options {
  display: grid;
  gap: 12px;
  margin: 0 auto;
  padding: 0 16px;
  max-width: 420px;
  counter-reset: quiz-option;
}

.game-btn--option {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 14px;
  text-align: left;
  padding: 12px 18px;
  color: var(--game-primary);
  background: var(--game-surface);
  box-shadow: 0 4px 0 oklch(88% 0.05 45), 0 8px 18px oklch(70% 0.05 85 / 0.18);
  border-radius: var(--radius-card);
  font-size: 19px;
}

.game-btn--option::before {
  counter-increment: quiz-option;
  content: counter(quiz-option, upper-alpha);
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: oklch(94% 0.06 45);
  color: var(--game-primary);
  font-size: 16px;
  font-weight: 800;
}

.game-btn--option:hover { transform: translateY(-2px); }
.game-btn--option:active {
  transform: translateY(3px);
  box-shadow: 0 1px 0 oklch(88% 0.05 45), 0 3px 8px oklch(70% 0.05 85 / 0.15);
}

@media (min-width: 900px) {
  .game-options { max-width: 720px; grid-template-columns: 1fr 1fr; }
}

/* Boss 血条与护盾 */
.game-boss-hp {
  margin: 20px 16px 4px;
  font-size: 20px;
  font-weight: 800;
  color: var(--game-danger);
}

.game-boss-shields { margin: 0 16px 16px; font-size: 20px; letter-spacing: 0.1em; }

/* 结算页 */
.game-result-stars {
  margin: 16px;
  font-size: 44px;
  text-align: center;
  animation: game-pop var(--duration-normal) var(--ease-spring);
}

.game-result-accuracy, .game-result-xp, .game-result-streak {
  margin: 4px 16px;
  text-align: center;
  font-size: 17px;
  font-weight: 600;
}

.game-result-xp { color: var(--game-success); }