/* ============================================
   ESSAIS — Reader Kindle + Catalogue
   ============================================ */

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

:root {
  --bg: #faf8f5;
  --text: #2c2c2c;
  --text-secondary: #666;
  --text-muted: #999;
  --border: #e0dcd5;
  --accent: #8b4513;
  --link: #1a5276;
  --link-hover: #2980b9;
  --code-bg: #f0ece4;
  --blockquote-border: #ccc;
  --progress-bg: #e0dcd5;
  --progress-fill: #8b4513;
  --overlay-bg: rgba(0, 0, 0, 0.5);
  --card-bg: #fff;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --img-opacity: 1;
}

.dark {
  --bg: #1a1a1a;
  --text: #d4c5a9;
  --text-secondary: #a89a7e;
  --text-muted: #7a6f5f;
  --border: #333;
  --accent: #d4a057;
  --link: #7fb3d3;
  --link-hover: #a8d4f0;
  --code-bg: #2a2520;
  --blockquote-border: #555;
  --progress-bg: #333;
  --progress-fill: #d4a057;
  --overlay-bg: rgba(0, 0, 0, 0.75);
  --card-bg: #242424;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.3);
  --img-opacity: 0.9;
}

html { scroll-behavior: smooth; }

body {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 19px;
  line-height: 1.85;
  color: var(--text);
  background: var(--bg);
  transition: background 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

.reader {
  max-width: 680px;
  margin: 0 auto;
  padding: 100px 24px 80px;
}

h1 {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 2.2rem;
  line-height: 1.25;
  margin-bottom: 0.5em;
  color: var(--text);
  font-weight: 700;
  letter-spacing: -0.5px;
}

h2 {
  font-size: 1.4rem;
  margin-top: 2.5em;
  margin-bottom: 0.6em;
  color: var(--text);
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.3em;
}

h3 {
  font-size: 1.15rem;
  margin-top: 2em;
  margin-bottom: 0.5em;
  color: var(--text);
  font-weight: 600;
}

p {
  margin-bottom: 1.2em;
  text-align: justify;
  hyphens: auto;
  -webkit-hyphens: auto;
}

a { color: var(--link); text-decoration: none; border-bottom: 1px solid transparent; }
a:hover { color: var(--link-hover); border-bottom-color: var(--link-hover); }

strong { font-weight: 700; }
em { font-style: italic; }

blockquote {
  border-left: 3px solid var(--blockquote-border);
  padding: 0.8em 1.2em;
  margin: 1.5em 0;
  font-style: italic;
  color: var(--text-secondary);
}

code {
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 0.85em;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

ul, ol { margin: 1em 0; padding-left: 1.5em; }
li { margin-bottom: 0.5em; }

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.9em;
  line-height: 1.5;
  overflow-x: auto;
  display: block;
}

thead { border-bottom: 2px solid var(--border); }
th { font-weight: 600; text-align: left; padding: 8px 12px; color: var(--text); }
td { padding: 8px 12px; border-bottom: 1px solid var(--border); color: var(--text-secondary); }
tr:hover td { background: var(--code-bg); }

figure { margin: 2em 0; text-align: center; }
figure img, .reader img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  opacity: var(--img-opacity);
  transition: opacity 0.3s ease;
}

figcaption {
  font-size: 0.82em;
  color: var(--text-muted);
  margin-top: 0.6em;
  font-style: italic;
  line-height: 1.4;
}

.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 48px;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  transition: background 0.3s ease;
}

.progress-bar__text {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.progress-bar__text:hover { color: var(--text); }

.progress-bar__track {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--progress-bg);
  width: 100%;
}

.progress-bar__fill {
  height: 100%;
  background: var(--progress-fill);
  transition: width 0.3s ease;
}

.progress-bar__dark-toggle {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.2rem;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px 8px;
}

.progress-bar__dark-toggle:hover { color: var(--text); }

.progress-bar__download {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.progress-bar__download a {
  color: var(--text-muted);
  margin: 0 4px;
  border-bottom: 1px dotted var(--text-muted);
}

.progress-bar__download a:hover { color: var(--text); }

.chapter-nav {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-top: 4em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.9rem;
  gap: 2em;
}

.chapter-nav a {
  color: var(--link);
  text-decoration: none;
  max-width: 45%;
  line-height: 1.4;
}

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

.chapter-nav__prev::before { content: "\2190\00a0"; }
.chapter-nav__next::after { content: "\00a0\2192"; }
.chapter-nav__next { text-align: right; margin-left: auto; }

.toc-overlay {
  position: fixed;
  inset: 0;
  background: var(--overlay-bg);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}

.toc-overlay.open { display: flex; }

.toc-overlay__content {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  max-width: 520px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 2em;
}

.toc-overlay__title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: 1.3rem;
  margin-bottom: 1em;
  color: var(--text);
}

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

.toc-overlay__list li { margin-bottom: 0.8em; }

.toc-overlay__list a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.95rem;
  padding: 4px 0;
}

.toc-overlay__list a:hover { color: var(--text); }
.toc-overlay__list a.current { color: var(--accent); font-weight: 600; }

.toc-overlay__list .toc-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  margin-left: 1em;
}

.toc-overlay__download {
  margin-top: 1.5em;
  padding-top: 1em;
  border-top: 1px solid var(--border);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.toc-overlay__download a { color: var(--link); margin: 0 6px; }

.breadcrumb {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 2em;
}

.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--text); }
.breadcrumb span { margin: 0 6px; }

.landing-hero { margin-bottom: 3em; }

.landing-hero h1 {
  font-size: 2.6rem;
  line-height: 1.15;
  margin-bottom: 0.3em;
}

.landing-hero .subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1em;
}

.landing-hero .meta {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.landing-resume {
  margin: 2.5em 0;
  padding: 1.5em;
  background: var(--code-bg);
  border-radius: 6px;
  font-size: 0.95em;
  line-height: 1.75;
}

.landing-chiffres {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5em;
  margin: 2.5em 0;
  text-align: center;
}

.landing-chiffres .chiffre {
  padding: 1.2em;
  border: 1px solid var(--border);
  border-radius: 6px;
}

.landing-chiffres .chiffre-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 0.3em;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.landing-chiffres .chiffre-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.landing-toc { margin: 3em 0; }

.landing-toc h2 {
  font-size: 1.3rem;
  margin-bottom: 1em;
  border-bottom: none;
}

.landing-toc ol {
  list-style: none;
  padding: 0;
  counter-reset: chapter;
}

.landing-toc ol li {
  counter-increment: chapter;
  margin-bottom: 0.8em;
}

.landing-toc ol li a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 1.05rem;
}

.landing-toc ol li a::before {
  content: counter(chapter) ". ";
  color: var(--text-muted);
  margin-right: 0.5em;
}

.landing-toc .toc-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: 1em;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.landing-download {
  margin: 2em 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.landing-download a {
  display: inline-block;
  color: var(--link);
  margin-right: 1.2em;
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.landing-download a:hover {
  background: var(--code-bg);
  border-bottom-color: var(--border);
}

.catalogue {
  max-width: 720px;
  margin: 0 auto;
  padding: 60px 24px;
}

.catalogue h1 {
  font-size: 2.4rem;
  margin-bottom: 0.3em;
}

.catalogue .intro-text {
  color: var(--text-secondary);
  margin-bottom: 3em;
  font-size: 1.05rem;
}

.essai-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 2em;
  background: var(--card-bg);
  box-shadow: var(--card-shadow);
  transition: box-shadow 0.2s ease;
}

.essai-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.12); }

.essai-card h2 {
  font-size: 1.5rem;
  border-bottom: none;
  margin-top: 0;
  margin-bottom: 0.2em;
}

.essai-card h2 a { color: var(--text); border-bottom: none; }
.essai-card h2 a:hover { color: var(--accent); }

.essai-card .card-subtitle {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 0.8em;
  font-size: 0.95rem;
}

.essai-card .card-meta {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1em;
}

.essai-card .card-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.2em;
  line-height: 1.7;
}

.essai-card .card-actions {
  display: flex;
  gap: 1em;
  align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.85rem;
}

.essai-card .card-actions a { color: var(--link); }

.essai-card .btn-read {
  background: var(--accent);
  color: #fff;
  padding: 8px 20px;
  border-radius: 4px;
  font-weight: 600;
  border-bottom: none;
}

.essai-card .btn-read:hover { opacity: 0.9; color: #fff; }

.essai-footer {
  margin-top: 4em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
}

.essai-footer a { color: var(--text-muted); }
.essai-footer a:hover { color: var(--text); }

@media (max-width: 768px) {
  body { font-size: 17px; }
  h1 { font-size: 1.8rem; }
  .landing-hero h1 { font-size: 2rem; }
  .reader { padding: 80px 18px 60px; }
  .landing-chiffres { grid-template-columns: 1fr; }
  .chapter-nav { flex-direction: column; gap: 1em; }
  .chapter-nav a { max-width: 100%; }
  .progress-bar__download { display: none; }
  table { font-size: 0.82em; }
  th, td { padding: 6px 8px; }
}

@media print {
  .progress-bar, .toc-overlay, .chapter-nav, .progress-bar__dark-toggle { display: none !important; }
  body { font-size: 12pt; background: #fff; color: #000; }
  .reader { padding: 0; max-width: 100%; }
}