/* EchoLine - 淡雅简洁，移动端优先 */

:root {
  --bg: #f8f6f3;
  --bg-card: #fff;
  --text: #3d3a36;
  --text-muted: #7a756e;
  --accent: #8b7355;
  --accent-soft: #c4b5a0;
  --border: #e8e4df;
  --highlight: #e8e0d5;
  --safe-top: env(safe-area-inset-top, 0);
  --safe-bottom: env(safe-area-inset-bottom, 0);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  color: var(--text);
  background: var(--bg);
  -webkit-tap-highlight-color: transparent;
}

#app {
  min-height: 100%;
  padding-top: var(--safe-top);
  padding-bottom: var(--safe-bottom);
}

/* Pages */
.page {
  display: none;
  min-height: 100vh;
  flex-direction: column;
}

.page.active {
  display: flex;
}

/* ---------- 剧集列表页 ---------- */
#episode-list-page {
  padding: 1rem 1rem 2rem;
}

.header {
  text-align: center;
  margin-bottom: 1.5rem;
  padding: 1rem 0;
}

.header h1 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.02em;
}

.subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.episode-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.episode-list li {
  margin: 0;
}

.episode-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 1rem;
  transition: background 0.15s, border-color 0.15s;
}

.episode-link:active {
  background: var(--highlight);
}

.episode-thumb {
  flex: 0 0 auto;
  width: 96px;
  height: 54px;
  border-radius: 6px;
  background: var(--border);
  background-size: cover;
  background-position: center;
}

.episode-thumb.loaded {
  background-color: transparent;
}

.episode-info {
  flex: 1 1 auto;
  min-width: 0;
}

.episode-link .title {
  font-weight: 500;
  display: block;
}

.episode-link .meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  display: block;
}

.empty-hint {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  padding: 2rem 1rem;
}

.empty-hint.hidden {
  display: none;
}

/* ---------- 播放页 ---------- */
#player-page {
  height: 100vh;
  overflow: hidden;
}

.back-link {
  flex-shrink: 0;
  padding: 0.75rem 1rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.back-link:active {
  opacity: 0.8;
}

.video-section {
  flex: 0 0 auto;
  position: relative;
  width: 100%;
  background: #1a1a1a;
  /* 高度由视频（最高 45vh）加控制栏决定，不再整体截断，否则控制栏下面的 A/B 按钮会被切掉 */
}

#video {
  display: block;
  width: 100%;
  max-height: 45vh;
  object-fit: contain;
}

.video-controls-overlay {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 1rem;
  background: rgba(248, 246, 243, 0.98);
  border-top: 1px solid var(--border);
}

.mode-buttons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
}

.mode-btn {
  padding: 0.35rem 0.45rem;
  font-size: 0.78rem;
  white-space: nowrap;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.mode-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* A/B 按钮紧跟在模式按钮下面一行，只在 AB 模式显示 */
.ab-controls {
  flex-basis: 100%;
  display: flex;
  gap: 0.35rem;
  margin-top: 0.1rem;
}

.ab-btn {
  padding: 0.35rem 0.8rem;
  font-size: 0.78rem;
  white-space: nowrap;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.ab-btn.set-a {
  background: #4a9;
  color: #fff;
  border-color: #4a9;
}

.ab-btn.set-b {
  background: #557ac5;
  color: #fff;
  border-color: #557ac5;
}

.controls-right {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.subtitle-mode-control,
.speed-control {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.subtitle-mode-control label,
.speed-control label {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
  min-width: 2em;
  text-align: right;
}

.subtitle-mode-control select,
.speed-control select {
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
}

.subtitle-section {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--bg);
}

.subtitle-list {
  flex: 1;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  padding: 1rem;
}

.subtitle-line {
  padding: 0.75rem 1rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  border: 1px solid transparent;
}

.subtitle-line:active {
  background: var(--highlight);
}

.subtitle-line.current {
  background: var(--highlight);
  border-color: var(--accent-soft);
}

.subtitle-line .timestamp {
  flex-shrink: 0;
  font-size: 0.68rem;
  color: var(--text-muted);
  opacity: 0.4;
  font-variant-numeric: tabular-nums;
  user-select: none;
  min-width: 3.5em;
  text-align: right;
}

.subtitle-line .text-wrap {
  flex: 1;
  min-width: 0;
}

.subtitle-line .text {
  font-size: 1.05rem;
  line-height: 1.5;
  color: var(--text);
  display: block;
}

.subtitle-line .text-zh {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
  display: block;
}

.subtitle-line.loop-a {
  border-left: 3px solid #4a9;
}

.subtitle-line.loop-b {
  border-left: 3px solid #557ac5;
}

.subtitle-line.loop-a .text::before {
  content: 'A ';
  color: #4a9;
  font-weight: 700;
  font-size: 0.8em;
}

.subtitle-line.loop-b .text::before {
  content: 'B ';
  color: #557ac5;
  font-weight: 700;
  font-size: 0.8em;
}

/* ---------- 跟读功能 ---------- */

/* 跟读按钮激活态：与其他模式按钮颜色一致 */

/* 字幕行展开状态 */
.subtitle-line.shadowing-expanded {
  background: var(--highlight);
  border-color: var(--accent-soft);
}

/* 跟读面板：展开后出现在字幕文字下方（在 .text-wrap 内部） */
.shadowing-panel {
  padding: 0.5rem 0 0.2rem;
  margin-top: 0.4rem;
  border-top: 1px solid var(--border);
}

.shadowing-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.shadowing-btn {
  padding: 0.4rem 0.8rem;
  min-height: 2.2rem;
  font-size: 0.85rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.shadowing-btn:active {
  background: var(--highlight);
}

/* 录音中按钮变红 */
.shadowing-btn.recording {
  background: #e74c3c;
  color: #fff;
  border-color: #e74c3c;
}

.shadowing-btn.recording:active {
  background: #c0392b;
}

/* 录音指示器：红点脉冲动画 */
.recording-indicator {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: #e74c3c;
}

.rec-dot {
  width: 8px;
  height: 8px;
  background: #e74c3c;
  border-radius: 50%;
  animation: rec-pulse 1s infinite;
}

@keyframes rec-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* 不支持录音时的提示文字 */
.shadowing-unsupported {
  font-size: 0.8rem;
  color: var(--text-muted);
  padding: 0.3rem 0;
}

/* ---------- 点句展开：句子下面的一排按钮（先放在 ?dev=1 后面） ---------- */

/* 视频下面那一行只留字幕和语速，两个并排靠右 */
.line-tools-on .mode-buttons {
  display: none;
}

.line-tools-on .video-controls-overlay {
  justify-content: flex-end;
}

.line-tools-on .controls-right {
  flex-direction: row;
  gap: 0.9rem;
}

/* 那一排占句子的整行宽，排在文字下面 */
.line-tools-on .subtitle-line {
  flex-wrap: wrap;
  row-gap: 0;
}

.line-tools {
  flex-basis: 100%;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem;
  padding: 0.5rem 0 0.2rem;
  margin-top: 0.45rem;
  border-top: 1px solid var(--border);
  cursor: default;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.4rem 0.45rem;
  min-height: 2.2rem;
  font-family: inherit;
  font-size: 0.85rem;
  white-space: nowrap;
  color: var(--text);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
  /* 语速小按钮会连着点好几下：不让 iPhone 把连点两下当成放大页面 */
  touch-action: manipulation;
}

.tool-btn:active {
  background: var(--highlight);
}

/* 单句开着 */
.tool-btn.on {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.tool-icon {
  flex-shrink: 0;
  width: 1.05em;
  height: 1.05em;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* 语速小按钮：写着单句语速的数字 */
.tool-rate {
  color: var(--accent);
  border-color: var(--accent-soft);
  font-variant-numeric: tabular-nums;
}

.tool-ab {
  min-width: 2.2rem;
  justify-content: center;
}

/* 颜色沿用原来的 设 A / 设 B */
.tool-ab.set-a {
  background: #4a9;
  color: #fff;
  border-color: #4a9;
}

.tool-ab.set-b {
  background: #557ac5;
  color: #fff;
  border-color: #557ac5;
}