/* 小说阅读器 */
/* 阅读页沉浸模式：隐藏站点页头/页脚，主题铺满整页 */
body.rd-reader {
  background: var(--rd-bg);
  color: var(--rd-text);
  transition: background 0.25s ease, color 0.25s ease;
}
body.rd-reader .head,
body.rd-reader .foot {
  display: none;
}
/* 全屏阅读：内容加宽到屏幕宽度（默认布局保持不变） */
html:fullscreen .reader-content,
html:-webkit-full-screen .reader-content,
body.rd-full .reader-content {
  max-width: 100%;
  padding-left: 10%;
  padding-right: 10%;
}
html:fullscreen .reader-wrap,
html:-webkit-full-screen .reader-wrap,
body.rd-full .reader-wrap {
  min-height: 100vh;
}
html:fullscreen .rd-toolbar,
html:-webkit-full-screen .rd-toolbar,
body.rd-full .rd-toolbar {
  bottom: 8px;
}
#readerWrap {
  --rd-bg: #0d1117;
  --rd-text: #c9d1d9;
  --rd-title: #ffd479;
  --rd-line: rgba(255, 255, 255, 0.09);
  --rd-muted: #8b949e;
  --rd-accent: #35d0e8;
  --rd-fs: 17px;
  --rd-ff: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --rd-lh: 2;
  --rd-ls: 0.02em;
  min-height: 78vh;
  background: var(--rd-bg);
  color: var(--rd-text);
  transition: background 0.25s ease, color 0.25s ease;
  padding-bottom: 96px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* 顶栏 */
.reader-topbar {
  position: sticky;
  top: 8px;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: color-mix(in srgb, var(--rd-bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rd-line);
}
.rt-back {
  flex-shrink: 0;
  color: var(--rd-accent);
  text-decoration: none;
  font-size: 13px;
  border: 1px solid var(--rd-line);
  border-radius: 99px;
  padding: 6px 12px;
  transition: background 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.rt-back:hover {
  border-color: var(--rd-accent);
  background: color-mix(in srgb, var(--rd-accent) 12%, transparent);
}
.rt-titles {
  flex: 1;
  min-width: 0;
}
.rt-book {
  font-size: 11px;
  color: var(--rd-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rt-ch {
  font-size: 15px;
  font-weight: 700;
  color: var(--rd-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.4;
}
.rt-settings {
  flex-shrink: 0;
  border: 1px solid var(--rd-line);
  background: transparent;
  color: var(--rd-text);
  border-radius: 99px;
  padding: 7px 14px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, color 0.15s;
}
.rt-settings:hover {
  border-color: var(--rd-accent);
  color: var(--rd-accent);
}

/* 正文 */
.reader-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 26px 20px 10px;
  font-family: var(--rd-ff);
}
.rd-ch-title {
  font-size: calc(var(--rd-fs) + 5px);
  font-weight: 800;
  color: var(--rd-title);
  text-align: center;
  margin: 4px 0 28px;
  line-height: 1.5;
  letter-spacing: 0.02em;
}
.reader-content p {
  font-size: var(--rd-fs);
  line-height: var(--rd-lh);
  letter-spacing: var(--rd-ls);
  color: var(--rd-text);
  margin: 0 0 calc(var(--rd-lh) * 0.5em);
  text-indent: 2em;
  word-break: break-word;
  overflow-wrap: break-word;
}
.rd-end {
  text-align: center;
  color: var(--rd-muted);
  font-size: 13px;
  padding: 34px 0 8px;
  letter-spacing: 0.2em;
}

/* 章节导航 */
.reader-nav {
  max-width: 720px;
  margin: 0 auto;
  padding: 18px 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.reader-nav .home {
  font-size: 13px;
  color: var(--rd-accent);
  border-color: var(--rd-line);
}
.reader-nav .home:hover {
  border-color: var(--rd-accent);
  background: color-mix(in srgb, var(--rd-accent) 14%, transparent);
}

/* 设置抽屉 */
.rd-panel,
.rd-toc {
  position: fixed;
  top: 0;
  bottom: 0;
  width: min(340px, 92vw);
  background: var(--rd-bg);
  color: var(--rd-text);
  z-index: 90;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.45);
  transform: translateX(105%);
  transition: transform 0.28s cubic-bezier(0.2, 0.7, 0.2, 1);
  display: flex;
  flex-direction: column;
}
.rd-panel {
  right: 0;
  border-left: 1px solid var(--rd-line);
}
.rd-toc {
  left: 0;
  transform: translateX(-105%);
  border-right: 1px solid var(--rd-line);
}
.rd-panel.open,
.rd-toc.open {
  transform: none;
}
.rd-panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px 12px;
  font-size: 16px;
  font-weight: 800;
  color: var(--rd-title);
  border-bottom: 1px solid var(--rd-line);
}
.rd-close {
  border: none;
  background: transparent;
  color: var(--rd-muted);
  font-size: 22px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 6px;
}
.rd-close:hover {
  color: var(--rd-text);
}
.rd-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--rd-line);
}
.rd-label {
  flex-shrink: 0;
  width: 58px;
  font-size: 13px;
  color: var(--rd-muted);
}
.rd-ctrl {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.rd-btn {
  border: 1px solid var(--rd-line);
  background: transparent;
  color: var(--rd-text);
  border-radius: 8px;
  padding: 6px 11px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, color 0.15s;
}
.rd-btn:hover {
  border-color: var(--rd-accent);
  color: var(--rd-accent);
}
.rd-val {
  min-width: 30px;
  text-align: center;
  font-size: 14px;
  color: var(--rd-title);
  font-variant-numeric: tabular-nums;
}
.rd-chip {
  border: 1px solid var(--rd-line);
  background: transparent;
  color: var(--rd-text);
  border-radius: 99px;
  padding: 5px 11px;
  font-size: 12px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.rd-chip:hover {
  border-color: var(--rd-accent);
}
.rd-chip.on {
  border-color: var(--rd-accent);
  background: color-mix(in srgb, var(--rd-accent) 18%, transparent);
  color: var(--rd-accent);
  font-weight: 700;
}
.rd-themes {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.rd-theme {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  border: 2px solid var(--rd-line);
  cursor: pointer;
  font-size: 11px;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding-bottom: 5px;
  transition: transform 0.15s, border-color 0.15s;
  box-sizing: border-box;
}
.rd-theme:hover {
  transform: translateY(-2px);
}
.rd-theme.on {
  border-color: var(--rd-accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--rd-accent) 35%, transparent);
}
.rd-theme[data-theme="dark"] {
  background: linear-gradient(135deg, #1a2230, #0d1117);
}
.rd-theme[data-theme="green"] {
  background: linear-gradient(135deg, #d9f0d6, #b9ddb4);
  color: #2c4a2c;
  text-shadow: none;
}
.rd-theme[data-theme="sepia"] {
  background: linear-gradient(135deg, #f7efdc, #e8d9b8);
  color: #5b4632;
  text-shadow: none;
}
.rd-theme[data-theme="night"] {
  background: linear-gradient(135deg, #171a21, #05060a);
}
.rd-theme[data-theme="white"] {
  background: linear-gradient(135deg, #ffffff, #e6e9ef);
  color: #333;
  text-shadow: none;
}
.rd-auto-toggle.playing {
  border-color: #3fb950;
  color: #3fb950;
  font-weight: 700;
}

/* 目录抽屉 */
.rd-toc-head {
  padding: 14px 18px 10px;
  border-bottom: 1px solid var(--rd-line);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.rd-toc-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--rd-title);
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.rd-toc-count {
  font-size: 11px;
  color: var(--rd-muted);
  font-weight: 400;
  margin-left: 6px;
}
.rd-toc-search {
  width: 100%;
  box-sizing: border-box;
  margin-top: 8px;
  padding: 9px 12px;
  border-radius: 9px;
  border: 1px solid var(--rd-line);
  background: color-mix(in srgb, var(--rd-bg) 80%, transparent);
  color: var(--rd-text);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}
.rd-toc-search:focus {
  border-color: var(--rd-accent);
}
.rd-toc-list {
  flex: 1;
  overflow-y: auto;
  padding: 8px 10px 20px;
  -webkit-overflow-scrolling: touch;
}
.rd-toc-loading,
.rd-toc-empty {
  color: var(--rd-muted);
  font-size: 13px;
  text-align: center;
  padding: 28px 0;
}
.rd-toc-ch {
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--rd-text);
  text-decoration: none;
  font-size: 14px;
  padding: 9px 10px;
  border-radius: 9px;
  transition: background 0.12s;
}
.rd-toc-ch:hover {
  background: color-mix(in srgb, var(--rd-accent) 12%, transparent);
}
.rd-toc-ch.on {
  background: color-mix(in srgb, var(--rd-accent) 22%, transparent);
  color: var(--rd-accent);
  font-weight: 700;
}
.rd-toc-ch.dim {
  opacity: 0.38;
  filter: grayscale(0.4);
}
.rd-toc-no {
  flex-shrink: 0;
  min-width: 30px;
  text-align: right;
  font-size: 11px;
  color: var(--rd-muted);
  font-variant-numeric: tabular-nums;
}
.rd-toc-t {
  flex: 1;
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 遮罩 */
.rd-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 80;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}
.rd-mask.open {
  opacity: 1;
  visibility: visible;
}

/* 底部工具栏 */
.rd-toolbar {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  z-index: 70;
  display: flex;
  align-items: center;
  gap: 6px;
  background: color-mix(in srgb, var(--rd-bg) 90%, #111);
  border: 1px solid var(--rd-line);
  border-radius: 99px;
  padding: 6px 8px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  max-width: 96vw;
  overflow-x: auto;
  scrollbar-width: none;
}
.rd-toolbar::-webkit-scrollbar {
  display: none;
}
.rd-tb-btn {
  flex-shrink: 0;
  border: none;
  background: transparent;
  color: var(--rd-text);
  font-size: 13px;
  padding: 8px 12px;
  border-radius: 99px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  font-family: inherit;
  transition: background 0.15s, color 0.15s;
}
.rd-tb-btn:hover {
  background: color-mix(in srgb, var(--rd-accent) 14%, transparent);
  color: var(--rd-accent);
}
.rd-tb-btn[disabled] {
  opacity: 0.35;
  cursor: default;
}
.rd-tb-btn.rd-tb-auto.playing {
  color: #3fb950;
  font-weight: 700;
}

/* 回到顶部提示条 */
.rd-toast {
  position: fixed;
  left: 50%;
  bottom: 82px;
  transform: translateX(-50%) translateY(8px);
  background: var(--rd-bg);
  color: var(--rd-text);
  border: 1px solid var(--rd-line);
  border-radius: 99px;
  padding: 9px 16px;
  font-size: 13px;
  z-index: 95;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s, transform 0.25s, visibility 0.25s;
  display: flex;
  gap: 10px;
  align-items: center;
  white-space: nowrap;
  max-width: 92vw;
}
.rd-toast.show {
  opacity: 1;
  transform: translateX(-50%);
  visibility: visible;
}
.rd-toast a {
  color: var(--rd-accent);
  text-decoration: none;
  font-weight: 700;
}

@media (max-width: 560px) {
  .reader-content {
    padding: 20px 16px 8px;
  }
  .rt-settings {
    padding: 6px 10px;
  }
  .rd-toolbar {
    bottom: 12px;
    padding: 5px 6px;
    gap: 2px;
  }
  .rd-tb-btn {
    font-size: 12px;
    padding: 7px 9px;
  }
}

/* 语音朗读：当前句只变色（不加背景），配柔和光晕脉动 */
.tts-cur {
  color: #ffd22e !important;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  animation: ttsCurPulse 1.4s ease-in-out infinite;
}
@keyframes ttsCurPulse {
  0%,
  100% {
    text-shadow: 0 0 3px rgba(255, 210, 46, 0.25);
  }
  50% {
    text-shadow: 0 0 10px rgba(255, 210, 46, 0.65);
  }
}
.rd-tts {
  flex-wrap: wrap;
}
.rd-voice {
  width: 100%;
  box-sizing: border-box;
  margin-bottom: 6px;
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--rd-line);
  background: color-mix(in srgb, var(--rd-bg) 82%, transparent);
  color: var(--rd-text);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}
.rd-voice:focus {
  border-color: var(--rd-accent);
}

/* 目录悬停科技感动画 */
.rd-toc-ch {
  position: relative;
  overflow: hidden;
  transition: transform 0.18s, background 0.18s, color 0.18s, box-shadow 0.18s;
}
.rd-toc-ch::after {
  content: "";
  position: absolute;
  left: -130%;
  top: 0;
  bottom: 0;
  width: 55%;
  background: linear-gradient(105deg, transparent, rgba(53, 208, 232, 0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.45s ease;
  pointer-events: none;
}
.rd-toc-ch:hover {
  transform: translateX(5px);
  background: linear-gradient(90deg, rgba(109, 92, 255, 0.22), rgba(53, 208, 232, 0.08));
  color: var(--rd-accent);
  box-shadow: 0 0 14px rgba(109, 92, 255, 0.3), inset 0 0 0 1px rgba(53, 208, 232, 0.35);
}
.rd-toc-ch:hover::after {
  left: 135%;
}

/* 顶栏朗读工具：选择配音员 + 语速调节 + 朗读按钮 */
.reader-topbar {
  flex-wrap: wrap;
}
.rt-tools {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-shrink: 0;
  flex-wrap: wrap;
}
/* 顶栏顺序：朗读 → 配音 → 速度 → 全屏 → 设置（旧缓存页同样生效） */
#rdToolTts {
  order: 1;
}
#rdToolVoice {
  order: 2;
}
.rt-speed {
  order: 3;
}
#rdToolFull {
  order: 4;
}
.rt-settings {
  order: 5;
}
.rt-label {
  display: none;
}
.rt-progress {
  width: 100%;
  height: 8px;
  border-radius: 99px;
  background: color-mix(in srgb, var(--rd-line) 70%, transparent);
  border: 1px solid var(--rd-line);
  overflow: hidden;
  cursor: pointer;
  touch-action: none;
  user-select: none;
}
.rt-progress-wrap {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  padding: 0;
}
.rt-progress-top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 120;
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-top: none;
}
.rt-progress i {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, #6d5cff, var(--rd-accent));
  border-radius: 99px;
  transition: width 0.15s linear;
}
.rt-speed {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.rt-speed input[type='range'] {
  width: 68px;
  accent-color: var(--rd-accent);
  cursor: pointer;
  margin: 0;
}
.rt-speed-val {
  font-size: 11px;
  color: var(--rd-muted);
  min-width: 30px;
  text-align: center;
}
.rt-voice {
  max-width: 130px;
  padding: 6px 8px;
  border-radius: 8px;
  border: 1px solid var(--rd-line);
  background: color-mix(in srgb, var(--rd-bg) 86%, transparent);
  color: var(--rd-text);
  font-size: 13px;
  outline: none;
  font-family: inherit;
}
.rt-voice option,
.rd-voice option {
  color: #222;
  background: #fff;
}
.rt-voice:focus {
  border-color: var(--rd-accent);
}
.rt-tts-btn {
  flex-shrink: 0;
  border: 1px solid var(--rd-line);
  background: transparent;
  color: var(--rd-accent);
  border-radius: 99px;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s, color 0.15s, background 0.15s;
  white-space: nowrap;
}
.rt-tts-btn:hover {
  border-color: var(--rd-accent);
  background: color-mix(in srgb, var(--rd-accent) 14%, transparent);
}
.rt-tts-btn {
  animation: rdTtsIdle 2.6s ease-in-out infinite;
}
/* 全屏按钮不需要呼吸动画 */
#rdToolFull {
  animation: none !important;
}
@keyframes rdTtsIdle {
  0%,
  100% {
    border-color: rgba(255, 255, 255, 0.16);
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
  }
  50% {
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.18);
  }
}
/* 朗读中：朗读按钮与配音选择框的白色科技感流动边框 */
.rt-tts-btn.tts-active,
.rt-voice.tts-active,
.rd-voice.tts-active {
  border: 2px solid transparent;
  background:
    linear-gradient(
        color-mix(in srgb, var(--rd-bg) 86%, transparent),
        color-mix(in srgb, var(--rd-bg) 86%, transparent)
      )
      padding-box,
    linear-gradient(115deg, rgba(255, 255, 255, 0.2), #fff, rgba(255, 255, 255, 0.2)) border-box;
  background-size: 100% 100%, 260% 100%;
  animation: rdTechBorder 2.2s linear infinite;
}
@keyframes rdTechBorder {
  0% {
    background-position: 0 0, 0% 0;
  }
  100% {
    background-position: 0 0, 260% 0;
  }
}

/* 首次生成语音的悬浮进度条 */
.rd-tts-loading {
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 9px;
  padding: 12px 18px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--rd-bg) 88%, transparent);
  border: 1px solid var(--rd-line);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.4);
  color: var(--rd-text);
  font-size: 13px;
  pointer-events: none;
  max-width: 86vw;
  text-align: center;
}
.rd-tts-loading-bar {
  width: 220px;
  height: 5px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
  position: relative;
}
.rd-tts-loading-bar i {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -40%;
  width: 38%;
  border-radius: 99px;
  background: linear-gradient(90deg, transparent, #6d5cff, #35d0e8, transparent);
  animation: rdLoadingSlide 1.2s ease-in-out infinite;
}
@keyframes rdLoadingSlide {
  0% {
    left: -40%;
  }
  100% {
    left: 105%;
  }
}

@media (max-width: 760px) {
  .rt-tools {
    width: 100%;
    order: 5;
    padding-top: 8px;
  }
  .rt-voice {
    flex: 1.2;
    max-width: none;
  }
  .rt-label {
    flex-shrink: 0;
  }
  .rt-speed input[type='range'] {
    width: 64px;
  }
}