/* ============================================================
   老诗集 - 诗词详情页样式（清爽版）
   ============================================================ */

/* ===== 基础变量 ===== */
:root {
  --bg: #fafaf8;
  --bg-card: #ffffff;
  --bg-soft: #f5f4f1;
  --bg-hover: #eeede9;
  --text: #3a3733;
  --text-secondary: #6b6660;
  --text-muted: #9c968e;
  --text-bright: #1f1d1a;
  --border: #e8e5e0;
  --border-light: #f0eeea;
  --accent: #6b7b8c;
  --accent-hover: #556575;
  --accent-soft: #eef1f4;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.05);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --font-serif: "Noto Serif SC", "Songti SC", "SimSun", "STSong", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --header-h: 64px;
  --max-width: 820px;
}

html.dark {
  --bg: #171614;
  --bg-card: #1e1c1a;
  --bg-soft: #252321;
  --bg-hover: #2c2a27;
  --text: #d8d4ce;
  --text-secondary: #a8a39c;
  --text-muted: #7a756e;
  --text-bright: #f0ede8;
  --border: #2e2c29;
  --border-light: #262421;
  --accent: #9aabb8;
  --accent-hover: #b0c0cc;
  --accent-soft: #232a30;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.3);
}

/* ===== 防闪烁 ===== */
html {
  background: #fafaf8;
  transition: background 0s !important;
}
html.dark {
  background: #171614;
}
body {
  background: transparent !important;
  transition: none !important;
}

/* ===== 重置 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  padding-top: var(--header-h);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============================================================
   Header
   ============================================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: background 0.3s ease, border-color 0.3s ease;
}

html.dark .site-header {
  background: rgba(23, 22, 20, 0.92);
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-left {
  flex-shrink: 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--accent);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 15px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-bright);
  font-family: var(--font-serif);
  letter-spacing: 1px;
}

.logo-sub {
  font-size: 12px;
  color: var(--text-muted);
  padding-left: 10px;
  border-left: 1px solid var(--border);
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-nav a {
  color: var(--text-secondary);
  font-size: 14px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.theme-btn,
.mobile-menu-btn,
.mobile-language-toggle {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all 0.2s ease;
}

.theme-btn:hover,
.mobile-menu-btn:hover,
.mobile-language-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

/* 语言选择器 */
.language-selector {
  position: relative;
  z-index: 100;
}

.language-current {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px 6px 8px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  cursor: pointer;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.2s ease;
  user-select: none;
}

.language-current:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.language-flag {
  width: 18px;
  height: 13px;
  border-radius: 2px;
  background-size: cover;
  background-position: center;
  flex-shrink: 0;
}

.language-name {
  white-space: nowrap;
}

.language-current .fa-chevron-down {
  font-size: 9px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.language-selector.active .fa-chevron-down {
  transform: rotate(180deg);
}

.language-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 340px;
  max-height: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 14px;
  display: none;
  overflow: hidden;
}

.language-selector.active .language-dropdown {
  display: flex;
  flex-direction: column;
  animation: fadeInDown 0.2s ease;
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.language-regions-container {
  overflow-y: auto;
  flex: 1;
}

.language-region {
  margin-bottom: 14px;
}

.region-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--border-light);
  letter-spacing: 1px;
}

.region-languages {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 2px;
}

.language-option {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.language-option:hover {
  background: var(--bg-hover);
  color: var(--text);
}

.language-option.active {
  background: var(--accent-soft);
  color: var(--accent);
}

.language-option .language-flag {
  width: 14px;
  height: 10px;
}

/* 移动端语言弹窗 */
.mobile-language-modal {
  display: none !important;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2000;
  justify-content: center;
  align-items: center;
}

.mobile-language-modal.active {
  display: flex !important;
}

.mobile-language-content {
  background: var(--bg-card);
  width: 92%;
  max-width: 380px;
  max-height: 70vh;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.mobile-language-header {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.mobile-language-header h3 {
  color: var(--text-bright);
  font-size: 15px;
  font-weight: 600;
}

.mobile-language-close {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 18px;
  cursor: pointer;
}

.mobile-language-list {
  flex: 1;
  overflow-y: auto;
  padding: 10px 16px;
}

.mobile-language-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--border-light);
  cursor: pointer;
  font-size: 14px;
  color: var(--text-secondary);
}

.mobile-language-option:hover,
.mobile-language-option.active {
  background: var(--bg-hover);
  color: var(--accent);
}

.mobile-language-flag {
  width: 20px;
  height: 14px;
  background-size: cover;
  border-radius: 2px;
  flex-shrink: 0;
}

/* ============================================================
   Main
   ============================================================ */
main {
  min-height: calc(100vh - var(--header-h) - 260px);
}

.container-narrow {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  padding: 24px 0 6px;
  font-size: 13px;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--accent);
}

.breadcrumb .separator {
  color: var(--text-muted);
  opacity: 0.5;
}

/* ============================================================
   诗词卡片
   ============================================================ */
.poem-detail {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 40px 44px 32px;
  margin: 14px 0 32px;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.poem-detail h1 {
  font-family: var(--font-serif);
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-bright);
  margin: 0 0 14px;
  line-height: 1.4;
  letter-spacing: 2px;
  text-align: center;
}

.poem-detail .meta {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
  font-size: 13px;
}

.poem-detail .meta a {
  display: inline-flex;
  align-items: center;
  padding: 3px 12px;
  border-radius: 20px;
  background: var(--bg-soft);
  color: var(--text-secondary);
  font-size: 12px;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.poem-detail .meta a:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

.poem-detail .meta .dynasty-tag {
  background: var(--accent-soft);
  color: var(--accent);
}

/* 配图 */
.poem-image {
  margin: 0 auto 28px;
  max-width: 560px;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.poem-image img {
  width: 100%;
  height: auto;
  transition: transform 0.4s ease;
}

.poem-image:hover img {
  transform: scale(1.02);
}

/* 正文 */
.poem-detail .content {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  line-height: 2.1;
  color: var(--text);
  text-align: center;
  padding: 8px 0 24px;
  letter-spacing: 1.5px;
}

.poem-detail .content p {
  margin: 0 0 10px;
}

.poem-detail .content p:last-child {
  margin-bottom: 0;
}

/* ============================================================
   朗读工具栏
   ============================================================ */
.tts-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 18px;
  margin: 0 0 18px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.tts-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 16px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.tts-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

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

.tts-btn i {
  font-size: 13px;
}

.tts-voice select {
  padding: 7px 28px 7px 12px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background: var(--bg-card);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  font-family: var(--font-sans);
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%239c968e'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: all 0.2s ease;
}

.tts-voice select:hover,
.tts-voice select:focus {
  border-color: var(--accent);
  color: var(--accent);
}

html.dark .tts-voice select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a756e'/%3E%3C/svg%3E");
}

.tts-speed-btn-wrap {
  position: relative;
}

.tts-icon-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: all 0.2s ease;
}

.tts-icon-btn:hover,
.tts-icon-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.tts-speed-popup {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  width: 190px;
  padding: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: none;
  z-index: 100;
}

.tts-speed-popup.active {
  display: block;
  animation: fadeInUp 0.2s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateX(-50%) translateY(6px); }
  to { opacity: 1; transform: translateX(-50%) translateY(0); }
}

.tts-speed-popup-title {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
  text-align: center;
  letter-spacing: 1px;
}

.tts-speed-popup input[type="range"] {
  width: 100%;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 2px;
  outline: none;
  cursor: pointer;
}

.tts-speed-popup input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

.tts-speed-popup input[type="range"]::-moz-range-thumb {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid var(--bg-card);
}

.tts-speed-popup-val {
  display: block;
  text-align: center;
  font-size: 12px;
  color: var(--accent);
  margin-top: 8px;
  font-weight: 600;
}

/* ============================================================
   下载栏
   ============================================================ */
.download-bar {
  text-align: center;
  padding-top: 6px;
}

.download-bar a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 22px;
  border: 1px dashed var(--border);
  border-radius: 20px;
  color: var(--text-muted);
  font-size: 13px;
  transition: all 0.2s ease;
}

.download-bar a:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
  border-style: solid;
}

/* ============================================================
   相关推荐
   ============================================================ */
.related-section {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 22px 26px;
  margin-bottom: 20px;
}

.related-section h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-bright);
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
}

.related-section h3 i {
  color: var(--accent);
  font-size: 14px;
}

/* 相关推荐列表 — flex 流式排布，短标题多个一行，长标题占满一行内部换行 */
.related-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: flex-start;
}

.related-list a {
  display: inline-block;
  flex: 0 1 auto;
  max-width: 100%;
  padding: 6px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: 18px;
  color: var(--text-secondary);
  font-size: 13px;
  line-height: 1.5;
  transition: all 0.2s ease;
  word-break: break-all;
}

.related-list a:hover {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent);
}

/* ============================================================
   Footer（精简：只保留导航四个链接，横向）
   ============================================================ */
.site-footer {
  background: var(--bg-soft);
  border-top: 1px solid var(--border-light);
  padding: 36px 0 28px;
  margin-top: 40px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px 36px;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-secondary);
  font-size: 14px;
  padding: 8px 4px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.footer-nav a i {
  color: var(--text-muted);
  font-size: 13px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.footer-nav a:hover {
  color: var(--accent);
}

.footer-nav a:hover i {
  color: var(--accent);
  transform: translateY(-1px);
}

.footer-bottom {
  text-align: center;
  margin-top: 26px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
  margin: 3px 0;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 768px) {
  :root {
    --header-h: 56px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 16px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.25s ease;
    box-shadow: var(--shadow-md);
    z-index: 998;
    pointer-events: none;
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }

  .main-nav a {
    font-size: 15px;
    padding: 10px 16px;
    text-align: center;
    border-radius: 8px;
  }

  .language-selector {
    display: none;
  }

  .mobile-language-toggle,
  .mobile-menu-btn {
    display: flex !important;
  }

  .logo-sub {
    display: none;
  }

  .logo-text {
    font-size: 16px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .poem-detail {
    padding: 28px 20px 24px;
    border-radius: var(--radius-md);
    margin: 12px 0 24px;
  }

  .poem-detail h1 {
    font-size: 1.4rem;
    letter-spacing: 1px;
  }

  .poem-detail .content {
    font-size: 1.05rem;
    line-height: 2;
    letter-spacing: 1px;
  }

  .tts-bar {
    gap: 6px;
    padding: 12px;
  }

  .tts-btn {
    padding: 6px 13px;
    font-size: 12px;
  }

  .tts-voice select {
    font-size: 12px;
    padding: 6px 24px 6px 10px;
  }

  .related-section {
    padding: 18px 16px;
    border-radius: var(--radius-md);
  }

  .footer-nav {
    gap: 8px 20px;
  }

  .footer-nav a {
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  .container,
  .container-narrow {
    padding: 0 14px;
  }

  .poem-detail {
    padding: 22px 14px 20px;
  }

  .poem-detail h1 {
    font-size: 1.25rem;
  }

  .poem-detail .content {
    font-size: 1rem;
    line-height: 1.95;
  }

  .breadcrumb {
    font-size: 12px;
    padding: 18px 0 4px;
  }

  .tts-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .tts-btn,
  .tts-voice select {
    width: 100%;
    justify-content: center;
  }

  .tts-voice {
    width: 100%;
  }

  .tts-speed-btn-wrap {
    align-self: center;
  }

  .footer-nav {
    gap: 6px;
  }
}

/* ============================================================
   滚动条
   ============================================================ */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

::selection {
  background: var(--accent);
  color: #fff;
}

/* ============================================================
   打印
   ============================================================ */
@media print {
  .site-header,
  .tts-bar,
  .download-bar,
  .related-section,
  .site-footer,
  .breadcrumb {
    display: none !important;
  }

  body {
    padding-top: 0;
    background: #fff;
    color: #000;
  }

  .poem-detail {
    box-shadow: none;
    border: none;
    padding: 0;
  }
}

/* ============================================================
   PC 端隐藏移动端菜单按钮
   ============================================================ */
.mobile-menu-btn {
  display: none;
}

@media (max-width: 768px) {
  .mobile-menu-btn {
    display: flex !important;
  }

  .header-container {
    padding: 0 12px;
    gap: 8px;
  }

  .header-right {
    gap: 4px;
  }

  .header-right .theme-btn,
  .header-right .mobile-language-toggle,
  .header-right .mobile-menu-btn {
    width: 32px;
    height: 32px;
    font-size: 13px;
  }

  .logo {
    gap: 6px;
  }

  .logo-text {
    font-size: 15px;
  }

  .logo-icon {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }
}

@media (max-width: 480px) {
  .header-right .theme-btn,
  .header-right .mobile-language-toggle,
  .header-right .mobile-menu-btn {
    width: 30px;
    height: 30px;
    font-size: 12px;
  }

  .logo-text {
    font-size: 14px;
  }

  .logo-icon {
    width: 28px;
    height: 28px;
    font-size: 11px;
  }
}

/* ============================================================
   朗读高亮：当前正在读的段落
   ============================================================ */
.poem-detail .content p {
  transition: background-color 0.3s ease, color 0.3s ease;
  border-radius: 6px;
  padding: 6px 12px;
  margin: 0 -12px 10px;
}

.poem-detail .content p.tts-active {
  background: linear-gradient(90deg, var(--accent-soft), transparent);
  color: var(--accent);
  font-weight: 600;
  box-shadow: inset 4px 0 0 var(--accent);
}

html.dark .poem-detail .content p.tts-active {
  background: rgba(154, 171, 184, 0.12);
  color: var(--accent-hover);
  box-shadow: inset 3px 0 0 var(--accent);
}





/* ============================================================
   AI 译文按钮（独立一行）
   ============================================================ */
.ai-translate-bar {
  text-align: center;
  margin: 0 0 20px;
}

.ai-translate-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 24px;
  border: 1px dashed var(--accent);
  border-radius: 22px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 14px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.25s ease;
}

.ai-translate-btn:hover {
  background: var(--accent);
  color: #fff;
  border-style: solid;
}

.ai-translate-btn:disabled {
  opacity: 0.7;
  cursor: wait;
}

/* ============================================================
   AI 译文盒子（独立区块）
   ============================================================ */
.ai-translation-box {
  margin: 0 0 22px;
  background: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  animation: aiFadeIn 0.35s ease;
}

@keyframes aiFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ai-translation-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border);
  letter-spacing: 1px;
}

.ai-translation-header i {
  font-size: 15px;
}

.ai-tag {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 400;
  margin-left: auto;
  letter-spacing: 0;
}

.ai-translation-body {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 2.1;
  color: var(--text);
  letter-spacing: 1.5px;
  text-align: center;
}

.ai-translation-body p {
  margin: 0 0 10px;
}

.ai-translation-body p:last-child {
  margin-bottom: 0;
}

html.dark .ai-translation-box {
  background: var(--bg-card);
}



/* ============================================================
   AI 译文按钮
   ============================================================ */
.ai-translate-bar {
  text-align: center;
  margin: 20px 0;
}

.ai-translate-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 24px;
  border: 1px dashed var(--accent);
  border-radius: 22px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 14px;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all 0.25s ease;
}

.ai-translate-btn:hover {
  background: var(--accent);
  color: #fff;
  border-style: solid;
}

.ai-translate-btn:disabled {
  opacity: 0.7;
  cursor: wait;
}

html.dark .ai-translate-btn {
  background: rgba(154, 171, 184, 0.12);
  border-color: #9aabb8;
  color: #9aabb8;
}
html.dark .ai-translate-btn:hover {
  background: #9aabb8;
  color: #171614;
}

/* ============================================================
   AI 译文盒子
   ============================================================ */
.ai-translation-box {
  margin: 20px 0 22px;
  background: var(--bg-soft);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  animation: aiFadeIn 0.35s ease;
}

@keyframes aiFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.ai-translation-header {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 14px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--border);
  letter-spacing: 1px;
}

.ai-translation-header i {
  font-size: 15px;
}

.ai-tag {
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 400;
  margin-left: auto;
  letter-spacing: 0;
}

.ai-translation-body {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 2.1;
  color: var(--text);
  letter-spacing: 1.5px;
  text-align: center;
}

.ai-translation-body p {
  margin: 0 0 10px;
}

.ai-translation-body p:last-child {
  margin-bottom: 0;
}

html.dark .ai-translation-box {
  background: #1e1c1a;
  border-color: #2e2c29;
}
html.dark .ai-translation-body {
  color: #d8d4ce;
}

/* 修复工具栏与 AI 盒子间距 */
.tts-bar {
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .ai-translation-box {
    padding: 18px 18px;
  }
  .ai-translation-body {
    font-size: 1rem;
    line-height: 2;
  }
}