/* 阅读器核心样式 */
.reader-page {
  background-color: var(--reader-bg, #f7f4ed);
  color: var(--reader-text, #2c2925);
  min-height: 100vh;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* 主题预设 */
body.theme-parchment {
  --reader-bg: #f8f5eb;
  --reader-text: #2f2b27;
  --reader-card: #ffffff;
  --reader-border: #e8e2d4;
}

body.theme-white {
  --reader-bg: #ffffff;
  --reader-text: #1a202c;
  --reader-card: #f8fafc;
  --reader-border: #e2e8f0;
}

body.theme-eye {
  --reader-bg: #e8f3e8;
  --reader-text: #203820;
  --reader-card: #f2faf2;
  --reader-border: #c8e2c8;
}

body.theme-night {
  --reader-bg: #181e24;
  --reader-text: #cbd5e1;
  --reader-card: #222a33;
  --reader-border: #334155;
}

.reader-header {
  background: var(--reader-card);
  border-bottom: 1px solid var(--reader-border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.5rem;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}

.reader-header-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.reader-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.reader-breadcrumb a {
  color: inherit;
  opacity: 0.7;
  text-decoration: none;
}

.reader-breadcrumb a:hover {
  opacity: 1;
  text-decoration: underline;
}

.reader-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ctrl-btn {
  background: transparent;
  border: 1px solid var(--reader-border);
  color: inherit;
  padding: 5px 10px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.15s ease;
}

.ctrl-btn:hover {
  background: rgba(0,0,0,0.05);
}

body.theme-night .ctrl-btn:hover {
  background: rgba(255,255,255,0.08);
}

.theme-dots {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-left: 6px;
}

.theme-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease;
}

.theme-dot:hover, .theme-dot.active {
  transform: scale(1.15);
  border-color: #c5a059;
}

.dot-parchment { background: #f8f5eb; border: 1px solid #dcd5c4; }
.dot-eye { background: #d7edd7; border: 1px solid #b2d6b2; }
.dot-white { background: #ffffff; border: 1px solid #d1d5db; }
.dot-night { background: #1a202c; border: 1px solid #4a5568; }

/* 阅读区域 */
.reader-container {
  max-width: 860px;
  margin: 2rem auto 4rem;
  padding: 0 1.5rem;
}

.reader-card {
  background: var(--reader-card);
  border: 1px solid var(--reader-border);
  border-radius: 8px;
  padding: 3.5rem 3rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}

.reader-title-area {
  text-align: center;
  padding-bottom: 2rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--reader-border);
}

.reader-book-tag {
  font-size: 0.85rem;
  color: #c5a059;
  letter-spacing: 2px;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.reader-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 0.8rem;
}

.reader-meta {
  font-size: 0.85rem;
  opacity: 0.65;
}

.reader-body {
  font-family: var(--font-serif);
  font-size: var(--reader-font-size);
  line-height: var(--reader-line-height);
  letter-spacing: 0.5px;
}

.reader-body p {
  margin-bottom: 1.6em;
  text-indent: 2em;
  text-align: justify;
}

.reader-body strong {
  color: #992d22;
}

body.theme-night .reader-body strong {
  color: #fca5a5;
}

.reader-body hr {
  border: none;
  height: 1px;
  background: var(--reader-border);
  margin: 2rem 0;
}

/* 翻页导航 */
.reader-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 3.5rem;
  padding-top: 2rem;
  border-top: 1px solid var(--reader-border);
  gap: 1rem;
}

.nav-link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.65rem 1.4rem;
  border-radius: 6px;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  border: 1px solid var(--reader-border);
  color: inherit;
  transition: all 0.2s ease;
}

.nav-link-btn:hover {
  background: rgba(197, 160, 89, 0.15);
  border-color: #c5a059;
}

.nav-link-btn.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* 移动端调整 */
@media (max-width: 768px) {
  .reader-header {
    padding: 0.6rem 0.9rem;
  }
  .reader-header-inner {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  .reader-breadcrumb {
    font-size: 0.82rem;
    flex: 1;
    min-width: 0;
  }
  .reader-controls {
    width: 100%;
    justify-content: space-between;
  }
  .ctrl-btn {
    padding: 8px 14px;
    font-size: 0.95rem;
    min-height: 40px;
  }
  .theme-dots {
    display: flex;
    margin-left: 0;
  }
  .theme-dot {
    width: 24px;
    height: 24px;
  }
  .reader-container {
    margin: 1.25rem auto 2.5rem;
    padding: 0 0.9rem;
  }
  .reader-card {
    padding: 2rem 1.25rem;
  }
  .reader-title {
    font-size: 1.5rem;
  }
  .reader-title-area {
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
  }
  .reader-body {
    --reader-font-size: 17px;
    --reader-line-height: 1.85;
  }
  .reader-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
    margin-top: 2rem;
    padding-top: 1.5rem;
  }
  .nav-link-btn {
    justify-content: center;
    padding: 0.8rem 1rem;
    min-height: 44px;
  }
}