/* ==========================================================================
   Renegade Reader - Landing Page & Chapters Stylesheet
   Xianxia dark aesthetic with 13-Book accordion TOC, search & mobile layout
   ========================================================================== */

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  transition: background-color var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  padding-top: env(safe-area-inset-top, 0px);
  padding-bottom: env(safe-area-inset-bottom, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  overflow-x: hidden;
}

/* Landing Navigation Header */
.landing-nav {
  position: sticky;
  top: 0;
  width: 100%;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 14px 28px;
  transition: background var(--transition);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-title:hover {
  color: var(--accent-color);
}

.brand-badge {
  font-size: 0.75rem;
  padding: 3px 8px;
  background: var(--card-bg);
  color: var(--accent-color);
  border: 1px solid var(--border-color);
  border-radius: 12px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  touch-action: manipulation;
  transition: color var(--transition);
}

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

/* Hero Section */
.hero-section {
  max-width: 1100px;
  margin: 40px auto 30px auto;
  padding: 0 24px;
  display: flex;
  gap: 48px;
  align-items: center;
}

.hero-cover {
  flex: 0 0 260px;
}

.hero-cover img,
.hero-cover-img {
  width: 100%;
  max-width: 260px;
  height: auto;
  aspect-ratio: 600 / 798;
  object-fit: cover;
  border-radius: var(--border-radius);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.5), 0 0 24px var(--accent-glow);
  border: 1px solid var(--border-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hero-cover img:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.6), 0 0 32px var(--accent-glow);
}

.hero-content {
  flex: 1;
}

.novel-tagline {
  color: var(--accent-color);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

.novel-title {
  font-size: 2.75rem;
  font-weight: 800;
  margin: 0 0 8px 0;
  line-height: 1.15;
  color: var(--text-color);
}

.novel-chinese-title {
  font-size: 1.2rem;
  color: var(--text-muted);
  font-weight: normal;
  margin-left: 8px;
}

.novel-author {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.novel-stats-row {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.stat-item {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 10px 16px;
  flex: 1 1 120px;
}

.stat-val {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent-color);
}

.stat-lbl {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.novel-synopsis {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 28px;
  max-width: 720px;
}

.hero-cta-buttons {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  background: var(--accent-color);
  color: #ffffff;
  padding: 13px 28px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  touch-action: manipulation;
  transition: all var(--transition);
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover, .btn-primary:active {
  background: var(--accent-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-color);
  border: 1px solid var(--border-color);
  padding: 13px 24px;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  touch-action: manipulation;
  transition: all var(--transition);
}

.btn-secondary:hover, .btn-secondary:active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--card-bg);
}

/* Chapters Section */
.toc-section {
  max-width: 1100px;
  margin: 30px auto 80px auto;
  padding: 0 24px;
}

.toc-controls-bar {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.search-input {
  width: 100%;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 14px 16px 14px 44px;
  border-radius: var(--border-radius);
  font-size: 0.95rem;
  font-family: inherit;
  min-height: 48px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 10px var(--accent-glow);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

/* Book Quick Pills */
.book-pills-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.book-pill {
  padding: 8px 14px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  touch-action: manipulation;
  white-space: nowrap;
  transition: all var(--transition);
}

.book-pill:hover, .book-pill:active, .book-pill.active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--card-bg);
}

/* Canonical 13 Books Accordions */
.book-accordion {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color var(--transition);
}

.book-header {
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-secondary);
  border-bottom: 1px solid transparent;
  touch-action: manipulation;
  transition: background var(--transition);
  user-select: none;
  min-height: 54px;
}

summary.book-header {
  list-style: none;
}

summary.book-header::-webkit-details-marker {
  display: none;
}

.book-header:hover, .book-header:active {
  background: var(--bg-tertiary);
}

.book-accordion.open .book-header,
details.book-accordion[open] .book-header {
  border-bottom-color: var(--border-color);
}

.book-title-group h3 {
  margin: 0 0 4px 0;
  font-size: 1.15rem;
  color: var(--text-color);
}

.book-title-group .book-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.book-toggle-icon {
  color: var(--text-muted);
  flex-shrink: 0;
  margin-left: 12px;
  transition: transform 0.25s ease;
}

.book-accordion.open .book-toggle-icon,
details.book-accordion[open] .book-toggle-icon {
  transform: rotate(180deg);
}

/* Chapter Grid */
.chapter-grid {
  display: none;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
  padding: 16px 20px;
}

.book-accordion.open .chapter-grid,
details.book-accordion[open] .chapter-grid {
  display: grid;
}

/* Homepage Volumes Section */
.home-volumes-section {
  margin: 24px 0 32px 0;
}

.home-volumes-heading {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-color);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.home-volumes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

.home-volume-card {
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: all var(--transition);
}

.home-volume-card:hover {
  border-color: var(--accent-color);
  background: var(--bg-tertiary);
  transform: translateY(-2px);
}

.home-volume-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  margin-bottom: 4px;
}

.home-volume-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.btn-toggle-all {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition);
}

.btn-toggle-all:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.chapter-item-link {
  display: block;
  padding: 11px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-color);
  text-decoration: none;
  font-size: 0.92rem;
  min-height: 42px;
  touch-action: manipulation;
  transition: all var(--transition);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chapter-item-link:hover, .chapter-item-link:active {
  border-color: var(--accent-color);
  color: var(--accent-color);
  background: var(--bg-tertiary);
  transform: translateX(3px);
}

/* Floating Back To Top Button */
.back-to-top-btn {
  position: fixed;
  bottom: max(20px, env(safe-area-inset-bottom, 20px));
  right: 20px;
  background: var(--nav-bg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  border-radius: 50%;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  z-index: 700;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.back-to-top-btn.visible {
  opacity: 1;
  pointer-events: auto;
}

.back-to-top-btn:active {
  transform: scale(0.95);
  color: var(--accent-color);
  border-color: var(--accent-color);
}

/* Landing Footer */
.landing-footer {
  text-align: center;
  padding: 40px 20px;
  border-top: 1px solid var(--border-color);
  color: var(--text-dim);
  font-size: 0.85rem;
}

.landing-footer a {
  color: var(--text-muted);
  text-decoration: none;
}

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

/* ==========================================================================
   Mobile Responsive Rules (< 840px and < 640px)
   ========================================================================== */

@media (max-width: 840px) {
  .hero-section {
    flex-direction: column;
    text-align: center;
    gap: 28px;
    margin: 24px auto 20px auto;
  }

  .hero-cover {
    flex: 0 0 auto;
    max-width: 220px;
    margin: 0 auto;
  }

  .novel-title {
    font-size: 2.2rem;
  }

  .novel-stats-row {
    justify-content: center;
  }

  .hero-cta-buttons {
    justify-content: center;
  }

  .chapter-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .landing-nav {
    padding: 12px 16px;
    justify-content: center;
  }

  .brand-title {
    font-size: 1.1rem;
    gap: 8px;
  }

  .hero-section {
    padding: 0 16px;
    gap: 20px;
  }

  .hero-cover {
    max-width: 175px;
  }

  .novel-title {
    font-size: 1.85rem;
  }

  .novel-chinese-title {
    display: block;
    margin-left: 0;
    margin-top: 4px;
    font-size: 1rem;
  }

  .novel-stats-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stat-item {
    padding: 8px 12px;
  }

  .stat-val {
    font-size: 1.15rem;
  }

  .novel-synopsis {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 22px;
  }

  .hero-cta-buttons {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
    padding: 14px 20px;
  }

  .toc-section {
    padding: 0 14px;
    margin: 20px auto 60px auto;
  }

  .search-input-wrapper {
    min-width: 100%;
  }

  .book-pills-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 8px;
    margin-bottom: 18px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .book-pills-bar::-webkit-scrollbar {
    display: none;
  }

  .book-header {
    padding: 14px 16px;
  }

  .book-title-group h3 {
    font-size: 1.05rem;
  }

  .chapter-grid {
    padding: 10px 12px;
    gap: 6px;
  }

  .chapter-item-link {
    padding: 12px 14px;
    font-size: 0.9rem;
  }
}

/* ==========================================================================
   Cultivator Reviews Section & Assembly
   ========================================================================== */
.reviews-section {
  max-width: 1100px;
  margin: 20px auto 80px auto;
  padding: 0 24px;
}

.reviews-header-block {
  text-align: center;
  margin-bottom: 36px;
}

.reviews-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--card-bg);
  border: 1px solid var(--accent-color);
  color: var(--accent-color);
  margin-bottom: 12px;
}

.reviews-title {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin: 0 0 10px 0;
  color: var(--text-color);
}

.reviews-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 650px;
  margin: 0 auto;
}

/* Rating Score Summary Card */
.reviews-score-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px 30px;
  margin-bottom: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.score-main {
  display: flex;
  align-items: center;
  gap: 18px;
}

.score-num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent-color);
  line-height: 1;
}

.score-stars-area {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.score-stars {
  color: #ffb800;
  font-size: 1.35rem;
  letter-spacing: 2px;
}

.score-subtext {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.score-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.score-tag-pill {
  font-size: 0.82rem;
  padding: 6px 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  color: var(--text-color);
}

/* Review Cards Grid */
.review-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 22px;
  margin-bottom: 40px;
}

.review-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.review-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-color);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.review-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.reviewer-details {
  display: flex;
  flex-direction: column;
}

.reviewer-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-color);
}

.reviewer-realm {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.review-card-stars {
  color: #ffb800;
  font-size: 0.95rem;
  letter-spacing: 1px;
}

.review-highlight-tag {
  display: inline-block;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--accent-color);
  background: rgba(255, 255, 255, 0.03);
  border-left: 2px solid var(--accent-color);
  padding: 3px 8px;
  margin-bottom: 12px;
  border-radius: 0 4px 4px 0;
}

.review-text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-color);
  font-style: italic;
  margin: 0;
  opacity: 0.92;
}

/* Daoist Assembly Reviews Container (Giscus) */
.landing-assembly-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 32px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
}

.landing-assembly-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 12px;
}

.landing-assembly-header h3 {
  margin: 0;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-color);
}

.landing-assembly-sub {
  color: var(--text-muted);
  font-size: 0.9rem;
}