/* Reading Order Guide - Main Stylesheet */
/* Optimized for readability, trust, and authentic design */

/* ===== CSS Variables ===== */
:root {
  /* Colors - Goodreads Inspired Warm Theme */
  --color-primary: #382110;
  /* Dark Brown for text */
  --color-secondary: #765944;
  /* Medium Brown */
  --color-accent: #8C6573;
  /* Muted Rose (from top bar) */
  --color-accent-light: #A67D8C;
  --color-background: #F4F1EA;
  /* Cream/Parchment Background */
  --color-surface: #ffffff;
  --color-text: #382110;
  --color-text-light: #555555;
  --color-text-muted: #777777;
  --color-border: #D8D2C2;
  /* Warm Border */
  --color-success: #4caf50;
  --color-star: #F1B229;
  /* Goodreads Orange Star */

  /* Top Bar */
  --color-topbar: #8C6573;
  --color-topbar-text: #ffffff;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 50%;

  /* Shadows - More subtle for bookish feel */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 6px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.1);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;

  /* Typography */
  --font-serif: 'Merriweather', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-family: var(--font-sans);
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-light);
  text-decoration: underline;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-serif);
  line-height: 1.3;
  color: var(--color-primary);
}

/* ===== Layout ===== */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-xl) 0;
}

.alt-bg {
  background: var(--color-surface);
}

/* ===== Header ===== */
.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-serif);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.logo:hover {
  text-decoration: none;
  color: var(--color-accent);
}

.logo-icon {
  display: none;
  /* Removed emoji as per request for clean design */
}

/* ===== Top Bar ===== */
.top-bar {
  background: var(--color-topbar);
  color: var(--color-topbar-text);
  padding: 8px 0;
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 500;
}

.top-bar-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.top-bar a {
  color: white;
  text-decoration: underline;
}

.top-bar a:hover {
  color: rgba(255, 255, 255, 0.9);
}

.nav {
  display: flex;
  gap: var(--spacing-md);
}

.nav a {
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.nav a:hover {
  background: var(--color-background);
  color: var(--color-accent);
  text-decoration: none;
}

/* ===== Breadcrumb - Simplified ===== */
.breadcrumb-nav {
  background: var(--color-background);
  padding: var(--spacing-sm) 0;
  font-size: var(--font-size-sm);
  border-bottom: 1px solid var(--color-border);
}

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

.breadcrumb-nav span {
  color: var(--color-text-muted);
}

/* ===== Welcome Section (Homepage) ===== */
.welcome-section {
  background-color: #FAF9F6;
  /* Brighter, elegant off-white */
  padding: 6rem 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.welcome-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.welcome-content h1 {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
  letter-spacing: -2px;
  line-height: 1.1;
  text-transform: capitalize;
}

.welcome-text {
  font-size: 1.4rem;
  color: var(--color-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
  font-style: italic;
  opacity: 0.9;
}

.stats-row {
  display: flex;
  justify-content: center;
  gap: 4rem;
  margin-top: 2rem;
  padding-top: 3rem;
  position: relative;
}

.stats-row::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: var(--color-accent);
  opacity: 0.3;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent);
}

.stat-label {
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-muted);
}

/* ===== How It Works - Visual Path ===== */
.how-it-works {
  background: var(--color-surface);
  padding: 5rem 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 3rem;
  position: relative;
}

.steps-grid::after {
  content: "";
  position: absolute;
  top: 35px;
  left: 15%;
  right: 15%;
  height: 1px;
  background: var(--color-border);
  z-index: 1;
}

.step-card {
  text-align: center;
  padding: var(--spacing-md);
  position: relative;
  z-index: 2;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 70px;
  height: 70px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  font-family: var(--font-serif);
  font-size: var(--font-size-xl);
  font-weight: 900;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.step-card:hover .step-number {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.step-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.step-card p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* ===== Section Title ===== */
.section-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

/* ===== Page Header Simple ===== */
.page-header-simple {
  background: var(--color-surface);
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.page-header-simple h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.page-header-simple p {
  color: var(--color-text-light);
}

/* ===== Author Grid ===== */
.author-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.author-card-simple {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-surface);
  padding: var(--spacing-sm);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.author-card-simple:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  background: #fbfbfb;
  text-decoration: none;
}

.author-thumb {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.author-card-info h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.book-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ===== Series Grid ===== */
.series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--spacing-lg);
}

.series-card-simple {
  background: var(--color-surface);
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
  text-decoration: none;
}

.series-card-simple:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
  background: #fbfbfb;
  text-decoration: none;
}

/* ===== Visual Series Card (Homepage) ===== */
.series-card-visual {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  transition: all 0.3s ease;
  text-decoration: none;
}

.series-card-visual:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
  text-decoration: none;
}

.series-card-cover {
  position: relative;
  aspect-ratio: 2/3;
  overflow: hidden;
  background: #eee;
}

.series-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.series-card-visual:hover .series-card-cover img {
  transform: scale(1.05);
}

.series-card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px 15px 10px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
  color: white;
}

.series-card-overlay .book-count {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: white;
}

.series-card-info {
  padding: 1rem;
}

.series-card-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-primary);
}

.series-card-info p {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.series-info h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.series-meta {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-xs);
}

/* ===== Author Header ===== */
.author-header {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.author-photo-large {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  object-fit: cover;
  flex-shrink: 0;
}

.author-header-info h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.author-stats-text {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.author-intro {
  color: var(--color-text);
  line-height: 1.8;
}

/* ===== Series Section ===== */
.series-section {
  margin-bottom: var(--spacing-xl);
}

.series-section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
  padding-bottom: var(--spacing-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.reading-order-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: var(--spacing-xs);
}

.reading-order-title {
  font-size: var(--font-size-xl);
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
  color: var(--color-primary);
}

.sort-options {
  display: flex;
  gap: var(--spacing-sm);
}

.sort-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
  font-family: var(--font-sans);
  color: var(--color-text-light);
  transition: all var(--transition-fast);
}

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

.sort-btn.active {
  background: var(--color-accent);
  color: white;
  border-color: var(--color-accent);
}

.series-intro {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-md);
}

/* ===== Book Order List ===== */
.book-order-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.book-order-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.book-order-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-accent);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 900;
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.book-order-cover {
  width: 80px;
  flex-shrink: 0;
}

.book-order-cover img {
  width: 100%;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.book-order-info {
  flex: 1;
  min-width: 0;
}

.book-order-info h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.book-order-info h3 a {
  color: var(--color-primary);
}

.book-order-info h3 a:hover {
  color: var(--color-accent);
}

.book-meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.book-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

/* ===== Amazon Link - Subtle ===== */
.link-amazon {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
  margin-left: var(--spacing-md);
}

.link-amazon:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.link-amazon::before {
  content: "→ ";
}

.link-amazon-prominent {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-top: var(--spacing-sm);
  margin-left: var(--spacing-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.link-amazon-prominent:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

/* ===== Book Grid Simple ===== */
.book-grid-simple {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--spacing-md);
}

.book-card-simple {
  text-align: center;
  text-decoration: none;
}

.book-card-simple img {
  width: 100%;
  aspect-ratio: 2/3;
  object-fit: cover;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--spacing-xs);
  transition: transform var(--transition-normal);
}

.book-card-simple:hover img {
  transform: scale(1.03);
}

.book-card-simple h3 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 4px;
}

/* ===== Book Detail Page ===== */
.book-detail {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.book-detail-cover img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

.book-detail-info h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.book-author {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.book-series {
  color: var(--color-text);
  margin-bottom: var(--spacing-sm);
}

.book-rating {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.book-rating .stars {
  color: var(--color-star);
}

.rating-count {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.book-meta-details {
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.book-meta-details p {
  margin-bottom: 4px;
}

.book-description {
  background: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
}

.book-description h2 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.description-text {
  line-height: 1.8;
  white-space: pre-line;
}

/* ===== Series Header ===== */
.series-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.series-header h1 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.series-byline {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
}

.series-byline a {
  color: var(--color-accent);
}

.reading-order-title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

/* ===== Read More Box ===== */
.read-more-box,
.more-by-author {
  background: var(--color-background);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-lg);
}

.read-more-box h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.read-more-box p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
}

/* ===== About Box ===== */
.about-box {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-box h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.about-box p {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-sm);
  line-height: 1.8;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
}

.btn-outline:hover {
  background: var(--color-accent);
  color: white;
  text-decoration: none;
}

/* ===== Rating ===== */
.rating {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.rating .stars {
  color: var(--color-star);
}

/* ===== Footer ===== */
.footer {
  background: #382110;
  color: #F4F1EA;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  color: rgba(244, 241, 234, 0.8);
}

.footer-links a:hover {
  color: white;
  text-decoration: none;
}

.footer-contact {
  text-align: center;
  margin-top: var(--spacing-md);
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.footer-copyright {
  text-align: center;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(244, 241, 234, 0.1);
  font-size: var(--font-size-sm);
  opacity: 0.7;
}

/* ===== Utilities ===== */
.text-center {
  text-align: center;
}

.text-muted {
  color: var(--color-text-light);
}

.mt-1 {
  margin-top: var(--spacing-sm);
}

.mt-2 {
  margin-top: var(--spacing-md);
}

.mt-3 {
  margin-top: var(--spacing-lg);
}

.mb-1 {
  margin-bottom: var(--spacing-sm);
}

.mb-2 {
  margin-bottom: var(--spacing-md);
}

.mb-3 {
  margin-bottom: var(--spacing-lg);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    gap: var(--spacing-sm);
  }

  .nav {
    width: 100%;
    justify-content: center;
  }

  .welcome-content h1 {
    font-size: var(--font-size-xl);
  }

  .stats-row {
    gap: var(--spacing-md);
  }

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

  .author-header {
    flex-direction: column;
    text-align: center;
  }

  .author-photo-large {
    margin: 0 auto;
  }

  .book-order-item {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .book-detail {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .book-detail-cover {
    max-width: 200px;
    margin: 0 auto;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-md);
  }
}

/* ===== Footer Contact ===== */
.footer-contact {
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.7);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.footer-contact a:hover {
  text-decoration: underline;
}

/* ===== Disqus Comments Section ===== */
.comments-section {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
}

.comments-section h2 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xs);
}

.comments-intro {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

/* ===== FAQ Section ===== */
.faq-section {
  background: var(--color-surface);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.faq-item h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.faq-item p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}


/* ===== Series Toggle Button ===== */
.series-toggle-container {
  text-align: center;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.series-toggle-btn {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.series-toggle-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(140, 101, 115, 0.05);
}

.series-toggle-btn.expanded {
  background: var(--color-background);
  color: var(--color-text);
}

/* Hidden elements transition */
.book-order-item {
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.book-order-item.hidden-book {
  opacity: 0;
  transform: translateY(-10px);
  pointer-events: none;
}

/* ===== Reading Guide Box ===== */
.reading-guide-box {
  background: linear-gradient(135deg, #f8f6f2 0%, #f4f1ea 100%);
  border-left: 4px solid var(--color-accent);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.reading-guide-box h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.reading-guide-box p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ===== Series Facts Box ===== */
.series-facts {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.series-facts h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
  padding-bottom: var(--spacing-xs);
  border-bottom: 1px solid var(--color-border);
}

.series-facts ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--spacing-xs);
}

.series-facts li {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  padding: var(--spacing-xs) 0;
}

.series-facts li strong {
  color: var(--color-text);
}

/* ===== What to Expect Section ===== */
.what-to-expect {
  background: var(--color-background);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
}

.what-to-expect h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.what-to-expect p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ===== Reading Context Box ===== */
.reading-context {
  background: linear-gradient(135deg, #f0ebe3 0%, #e8e4dc 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.reading-context h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.reading-context p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ===== What's Next Section ===== */
.whats-next {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
}

.whats-next h3 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.whats-next p {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* ===== Tips List ===== */
.tips-list {
  list-style: none;
  max-width: 700px;
  margin: 0 auto;
}

.tips-list li {
  position: relative;
  padding-left: 28px;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

.tips-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

/* ===== Content Text Block ===== */
.content-text {
  max-width: 800px;
  margin: 0 auto;
  color: var(--color-text-light);
  line-height: 1.8;
  font-size: var(--font-size-base);
}

.content-text p {
  margin-bottom: var(--spacing-sm);
}

/* ===== Why Reading Order Section ===== */
.why-section {
  background: var(--color-surface);
  text-align: center;
}

.why-section .content-text {
  text-align: left;
}

#disqus_thread {
  margin-top: var(--spacing-md);
}

/* ===== Card Meta & Year Badge ===== */
.card-meta {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: 4px;
}

.year-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: var(--color-background);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.book-card-simple .rating {
  font-size: 0.85rem;
}

/* Series Navigation */
.series-nav-container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 15px;
  margin: 20px 0 40px;
  padding: 15px 20px;
  background: #f8f9fa;
  border-radius: 8px;
  border: 1px solid #eee;
}

.series-nav-label {
  font-weight: 600;
  color: #333;
  font-size: 0.95em;
  margin-right: 5px;
}

.series-nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.series-nav-link {
  display: inline-block;
  padding: 6px 14px;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 20px;
  color: #444;
  text-decoration: none;
  font-size: 0.9em;
  transition: all 0.2s ease;
}

.series-nav-link:hover {
  background: #2c3e50;
  color: white;
  border-color: #2c3e50;
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Scroll margin for sticky header compensation if needed */
.series-section {
  scroll-margin-top: 20px;
}
/* ===== At a Glance List ===== */
.at-a-glance {
  background: #fbfbfb;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.at-a-glance h2 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: var(--spacing-xs);
  display: inline-block;
}

.glance-content h3 {
  font-size: var(--font-size-base);
  margin-top: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  color: var(--color-secondary);
}

.glance-content ul {
  list-style-position: inside;
  padding-left: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.glance-content li {
  margin-bottom: 4px;
  color: var(--color-text);
  font-size: var(--font-size-sm);
}


/* ===== Visual Timeline ===== */
.timeline-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.timeline-section h2 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
  color: var(--color-primary);
}

.timeline-intro {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--spacing-lg);
}

.timeline-container {
  padding: var(--spacing-xl) var(--spacing-md);
  overflow-x: auto;
}

.timeline-track {
  position: relative;
  height: 140px;
  min-width: 100%;
}

.timeline-line {
  position: absolute;
  top: 40%;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
  border-radius: 2px;
  transform: translateY(-50%);
}

.timeline-years {
  position: absolute;
  top: 40%;
  left: 0;
  right: 0;
  transform: translateY(40px);
  display: flex;
  justify-content: space-between;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

.timeline-item {
  position: absolute;
  top: 40%;
  transform: translate(-50%, -50%);
  z-index: 10;
  cursor: pointer;
}

.timeline-dot {
  width: 18px;
  height: 18px;
  background: var(--color-surface);
  border: 3px solid var(--color-accent);
  border-radius: 50%;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.timeline-item:hover .timeline-dot {
  transform: scale(1.4);
  background: var(--color-accent);
  box-shadow: 0 4px 12px rgba(140, 101, 115, 0.4);
}

.timeline-label {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
  white-space: nowrap;
  font-family: var(--font-serif);
}

.timeline-item:hover .timeline-label {
  color: var(--color-accent);
}

.timeline-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-10px);
  background: var(--color-primary);
  color: white;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  min-width: 150px;
  text-align: center;
}

.timeline-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 8px solid transparent;
  border-top-color: var(--color-primary);
}

.timeline-item:hover .timeline-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-15px);
}

.timeline-book-order {
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--color-accent);
  padding: 2px 8px;
  border-radius: 10px;
  letter-spacing: 0.5px;
}

.timeline-book-title {
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.3;
}

.timeline-book-year {
  font-size: 0.8rem;
  opacity: 0.8;
  font-family: var(--font-serif);
}

.timeline-legend {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--spacing-md);
  padding-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.timeline-legend span:nth-child(2) {
  font-style: italic;
}

/* Timeline Responsive */
@media (max-width: 768px) {
  .timeline-container {
    padding: var(--spacing-lg) var(--spacing-xs);
  }
  
  .timeline-track {
    min-width: 500px;
  }
  
  .timeline-tooltip {
    font-size: 0.8rem;
    min-width: 120px;
    padding: 8px 10px;
  }
  
  .timeline-book-title {
    font-size: 0.8rem;
  }
  
  .timeline-legend span:nth-child(2) {
    display: none;
  }
}