:root {
  --color-bg: #faf8f4;
  --color-text: #2c2c2c;
  --color-heading: #1a1a1a;
  --color-accent: #6b4226;
  --color-accent-light: #8b5e3c;
  --color-border: #d4cfc7;
  --color-muted: #7a756d;
  --color-link: #6b4226;
  --color-link-hover: #8b5e3c;
  --color-nav-bg: #f3efe8;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --font-sans: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
  --max-width: 720px;
}

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

body {
  font-family: var(--font-serif);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 17px;
}

a { color: var(--color-link); text-decoration: none; }
a:hover { color: var(--color-link-hover); text-decoration: underline; }

.site-header {
  background: var(--color-accent);
  color: #fff;
  padding: 0.6rem 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.site-header .logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: #fff;
  white-space: nowrap;
  flex-shrink: 0;
}

.site-header .logo:hover { text-decoration: none; color: #f0e6d6; }

.parent-link {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.85);
  white-space: nowrap;
  flex-shrink: 0;
  padding: 0.3rem 0.7rem;
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 4px;
  transition: all 0.2s;
}

.parent-link:hover {
  color: #fff;
  border-color: rgba(255,255,255,0.7);
  text-decoration: none;
  background: rgba(255,255,255,0.1);
}

.search-box {
  margin: 0 auto;
  max-width: 640px;
  width: 100%;
  position: relative;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

/* Pagefind filter dropdowns inline */
.search-box pagefind-filter-dropdown {
  flex-shrink: 0;
}

.search-box pagefind-filter-dropdown .pf-dropdown-trigger {
  height: 36px;
  font-size: 0.85rem;
  padding: 0 24px 0 10px;
  border-radius: 4px;
  background: rgba(255,255,255,0.95);
  border: 1px solid #ddd;
  color: #333;
  font-family: var(--font-sans);
  white-space: nowrap;
}

.search-box pagefind-filter-dropdown .pf-dropdown-trigger:hover {
  border-color: #d4b896;
}

.search-box pagefind-filter-dropdown .pf-dropdown-menu {
  max-height: 300px;
  overflow-y: auto;
  z-index: 1000;
}

/* Pagefind searchbox styling */
.search-box pagefind-searchbox {
  flex: 1;
  min-width: 180px;
  --pf-searchbox-max-width: 100%;
  --pf-background: rgba(255,255,255,0.95);
  --pf-text: #333;
  --pf-text-secondary: #666;
  --pf-border: transparent;
  --pf-border-focus: #d4b896;
  --pf-font: var(--font-sans);
  --pf-input-height: 36px;
  --pf-input-font-size: 0.9rem;
  --pf-border-radius: 4px;
  --pf-shadow-sm: 0 2px 8px rgba(0,0,0,0.1);
  --pf-shadow-md: 0 4px 12px rgba(0,0,0,0.15);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ── Layout avec sidebar TOC ── */
.layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.toc-sidebar {
  position: sticky;
  top: 60px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  font-family: var(--font-sans);
  border-right: 2px solid var(--color-border);
  padding-right: 1.5rem;
}

.toc-nav h3 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: 0.8rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
}

.toc-list {
  list-style: none;
  padding: 0;
}

.toc-chapter {
  margin-bottom: 0.3rem;
}

.toc-chapter > a {
  display: block;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--color-text);
  padding: 0.25rem 0;
  border-left: 3px solid transparent;
  transition: all 0.15s;
}

.toc-chapter.active > a {
  color: var(--color-accent);
  font-weight: 700;
  border-left-color: var(--color-accent);
  padding-left: 0.5rem;
}

.toc-chapter > a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.toc-sections {
  list-style: none;
  padding: 0 0 0 0.8rem;
  margin-top: 0.15rem;
  display: none;
}

.toc-sections.expanded {
  display: block;
}

.toc-sections li a {
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--color-muted);
  padding: 0.2rem 0;
  display: block;
  border-left: 3px solid transparent;
  transition: all 0.15s;
}

.toc-sections li.active a {
  color: var(--color-accent);
  font-weight: 600;
  border-left-color: var(--color-accent-light);
}

.toc-sections li a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

.main-content {
  min-width: 0;
}

.breadcrumb {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--color-muted);
  margin-bottom: 1.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--color-border);
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { margin: 0 0.4rem; }

h1 {
  font-size: 1.8rem;
  color: var(--color-heading);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

h2 {
  font-size: 1.35rem;
  color: var(--color-heading);
  margin: 2rem 0 0.8rem;
  line-height: 1.4;
}

p { margin-bottom: 1.2rem; text-align: justify; }

.page-content { min-height: 50vh; }
.page-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
  border-radius: 3px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.page-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}

.page-content table td,
.page-content table th {
  border: 1px solid var(--color-border);
  padding: 0.6rem 0.8rem;
  vertical-align: top;
}

.page-content table th {
  background: var(--color-nav-bg);
  font-weight: 700;
}

.page-content sup, .page-content sub { font-size: 0.75em; }

.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-border);
  gap: 1rem;
}

.page-nav a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  padding: 0.6rem 1.2rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all 0.2s;
  flex: 1;
  text-align: center;
}

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

.page-nav .page-number {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-muted);
  flex-shrink: 0;
}

.home-title { text-align: center; margin-bottom: 0.3rem; }

.home-subtitle {
  text-align: center;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 2.5rem;
}

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

.book-item {
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 1.3rem 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: box-shadow 0.2s, border-color 0.2s;
  background: #fff;
}

.book-item:hover {
  border-color: var(--color-accent-light);
  box-shadow: 0 3px 12px rgba(107,66,38,0.1);
}

.book-info h2 { font-size: 1.15rem; margin: 0 0 0.3rem; }

.book-info p {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
  text-align: left;
}

.book-link {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  border-radius: 4px;
  white-space: nowrap;
}

.book-link:hover {
  background: var(--color-accent-light);
  text-decoration: none;
}

.volume-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--color-border);
}

.volume-header h1 { font-size: 1.6rem; }
.volume-header p { font-family: var(--font-sans); color: var(--color-muted); font-size: 0.9rem; }

/* ── Navigation structurée par chapitres (index volume) ── */
.toc-nav-container {
  margin: 2rem 0;
}

.toc-entry {
  margin-bottom: 1.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--color-border);
}

.toc-chapter-link {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-accent);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.8rem;
}

.toc-chapter-link:hover {
  color: var(--color-accent-light);
  text-decoration: none;
}

.toc-page {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-muted);
  flex-shrink: 0;
}

.toc-sections-list {
  list-style: none;
  padding: 0.4rem 0 0 1.2rem;
  margin: 0.3rem 0 0;
  border-left: 2px solid var(--color-border);
}

.toc-sections-list li a {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  color: var(--color-text);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.2rem 0;
}

.toc-sections-list li a:hover {
  color: var(--color-accent);
  text-decoration: none;
}

/* Toggle grille de pages */
.page-grid-toggle {
  margin-top: 3rem;
  border-top: 2px solid var(--color-border);
  padding-top: 1rem;
}

.page-grid-summary {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-accent);
  cursor: pointer;
  padding: 0.5rem 0;
  list-style: none;
}

.page-grid-summary::-webkit-details-marker { display: none; }

.page-grid-summary::before {
  content: "▸ ";
  transition: transform 0.2s;
}

.page-grid-toggle[open] .page-grid-summary::before {
  content: "▾ ";
}

.page-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.8rem;
}

.page-link {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  padding: 0.25rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 3px;
  color: var(--color-muted);
  transition: all 0.15s;
}

.page-link:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  text-decoration: none;
}

.site-footer {
  text-align: center;
  padding: 2rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  margin-top: 3rem;
}

@media (max-width: 600px) {
  .container { padding: 1.2rem 1rem 3rem; }
  h1 { font-size: 1.4rem; }
  .site-header { flex-wrap: wrap; padding: 0.5rem 1rem; }
  .search-box { order: 3; max-width: 100%; width: 100%; }
  .parent-link { order: 2; font-size: 0.75rem; }
}

/* ── Mobile : sidebar TOC en accordéon ── */
@media (max-width: 900px) {
  .layout {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .toc-sidebar {
    position: static;
    max-height: none;
    overflow-y: visible;
    border-right: none;
    border-bottom: 2px solid var(--color-border);
    padding-right: 0;
    padding-bottom: 1rem;
  }

  .toc-toggle {
    display: block;
    width: 100%;
    font-family: var(--font-sans);
    font-size: 0.85rem;
    color: var(--color-accent);
    background: var(--color-nav-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    padding: 0.5rem 1rem;
    cursor: pointer;
    text-align: left;
    margin-bottom: 0;
    transition: background 0.2s;
  }

  .toc-toggle:hover {
    background: #ebe6dd;
  }

  .toc-nav.collapsed {
    display: none;
  }

  .toc-nav.expanded {
    display: block;
  }
}

@media (min-width: 901px) {
  .toc-toggle {
    display: none;
  }
}