.story-book {
  --story-book-bg-primary: var(--bs-body-bg);
  --story-book-bg-secondary: var(--bs-secondary-bg);
  --story-book-text-primary: var(--bs-body-color);
  --story-book-text-secondary: var(--bs-secondary-color);
  --story-book-text-emphasis: var(--bs-emphasis-color);
  --story-book-border-color: var(--bs-border-color);
  --story-book-accent: #8b7355;
  --story-book-accent-hover: #6d5940;
  --story-book-border-radius: var(--bs-border-radius);
  --story-book-max-width: 1100px;
  --story-book-font-serif: "Crimson Text", serif;
  --story-book-font-display: "Libre Baskerville", serif;
  --story-book-spacing-xs: 0.5rem;
  --story-book-spacing-sm: 1rem;
  --story-book-spacing-md: 1.5rem;
  --story-book-spacing-lg: 2.5rem;
  --story-book-spacing-xl: 4rem;
}

.story-book {
  font-family: var(--story-book-font-serif);
  font-size: 18px;
  line-height: 1.8;
  color: var(--story-book-text-primary);
  background-color: var(--story-book-bg-primary);
  min-height: 100vh;
}

.story-book .container {
  max-width: var(--story-book-max-width);
  margin: 0 auto;
  padding: var(--story-book-spacing-lg) var(--story-book-spacing-md);
}

.story-book .chapters-section {
  padding: var(--story-book-spacing-lg) 0;
}

.story-book .section-title {
  font-family: var(--story-book-font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--story-book-text-emphasis);
  margin-bottom: var(--story-book-spacing-lg);
  text-align: center;
  position: relative;
  padding-bottom: var(--story-book-spacing-md);
}

.story-book .section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background-color: var(--story-book-accent);
}

.story-book .chapters-list {
  display: flex;
  flex-direction: column;
  gap: var(--story-book-spacing-md);
  align-items: center;
}

.story-book .chapter-card {
  display: flex;
  justify-content: center;
  gap: var(--story-book-spacing-md);
  padding: var(--story-book-spacing-sm);
  background-color: var(--story-book-bg-primary);
  border: 1px solid var(--story-book-border-color);
  border-radius: var(--story-book-border-radius);
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
  max-width: 580px;
  width: 100%;
}

@media (min-width: 576px) {
  .story-book .chapter-card {
    padding: var(--story-book-spacing-md);
  }
}

.story-book .chapter-card:hover {
  transform: translateX(4px);
  background-color: var(--story-book-bg-secondary);
  border-color: var(--story-book-accent);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.story-book .chapter-number {
  font-family: var(--story-book-font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--story-book-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
}

.story-book .chapter-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  width: 400px;
}

.story-book .chapter-title {
  font-family: var(--story-book-font-display);
  font-size: 1.25rem;
  line-height: 1.4;
  font-weight: 700;
  color: var(--story-book-text-emphasis);
  margin-bottom: var(--story-book-spacing-xs);
}

@media (min-width: 769px) {
  .story-book .chapter-title {
    font-size: 1.5rem;
  }
}

.story-book .chapter-preview {
  font-size: 0.95rem;
  color: var(--story-book-text-secondary);
  font-style: italic;
  margin: 0;
  line-height: 1.3;
}

.story-book .chapter-header {
  text-align: center;
  margin-bottom: var(--story-book-spacing-xl);
  padding: var(--story-book-spacing-lg) 0;
  border-bottom: 1px solid var(--story-book-border-color);
}

.story-book .chapter-nav-menu {
  text-align: center;
  margin-bottom: var(--story-book-spacing-md);
}

.story-book .home-link {
  font-size: 0.95rem;
  color: var(--story-book-accent);
  text-decoration: none;
  font-variant: small-caps;
  letter-spacing: 1px;
  transition: color 0.3s ease;
}

.story-book .home-link:hover {
  color: var(--story-book-accent-hover);
}

.story-book .home-link-center {
  margin: auto;
}

.story-book .chapter-header h1 {
  font-family: var(--story-book-font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--story-book-text-emphasis);
  margin-bottom: var(--story-book-spacing-sm);
}

.story-book .chapter-subtitle {
  font-size: 1.25rem;
  color: var(--story-book-text-secondary);
  font-style: italic;
}

.story-book .chapter-content {
  max-width: 700px;
  margin: 0 auto var(--story-book-spacing-xl) auto;
}

.story-book .chapter-content p {
  margin-bottom: var(--story-book-spacing-md);
  text-align: justify;
  text-indent: 2em;
}

.story-book .chapter-content p:first-of-type {
  text-indent: 0;
}

.story-book .chapter-content p:first-of-type::first-letter {
  font-size: 3.5em;
  line-height: 0.9;
  float: left;
  margin: -28px 0 0 36px;
  font-family: var(--story-book-font-display);
  color: var(--story-book-accent);
}

.story-book .log-entry {
  text-align: center;
  font-style: italic;
  margin: 2em 0;
  text-indent: 0;
}

.story-book .chapter-navigation {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  gap: var(--story-book-spacing-md);
  padding: var(--story-book-spacing-lg) 0;
  border-top: 1px solid var(--story-book-border-color);
  margin-top: var(--story-book-spacing-xl);
}

@media (min-width: 769px) {
  .story-book .chapter-navigation {
    flex-direction: row;
    gap: 0;
  }
}

.story-book .nav-btn {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--story-book-text-primary);
  padding: var(--story-book-spacing-sm) var(--story-book-spacing-md);
  border: 1px solid var(--story-book-border-color);
  border-radius: var(--story-book-border-radius);
  background-color: var(--story-book-bg-primary);
  transition: all 0.3s ease;
  width: 100%;
  text-align: center;
}

@media (min-width: 769px) {
  .story-book .nav-btn {
    width: auto;
    min-width: 200px;
  }
}

.story-book .nav-btn:hover {
  background-color: var(--story-book-bg-secondary);
  border-color: var(--story-book-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.story-book .nav-btn-label {
  font-size: 0.85rem;
  color: var(--story-book-text-secondary);
  font-variant: small-caps;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.story-book .nav-btn.prev {
  text-align: center;
}

@media (min-width: 769px) {
  .story-book .nav-btn.prev {
    text-align: left;
  }
}

.story-book .nav-btn.next {
  text-align: center;
}

@media (min-width: 769px) {
  .story-book .nav-btn.next {
    text-align: right;
  }
}

.story-book .nav-spacer {
  display: none;
}

@media (min-width: 769px) {
  .story-book .nav-spacer {
    display: block;
    width: 200px;
  }
}