/* =============================================================
   La Transition Républicaine — Feuille de style commune
   ============================================================= */

@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&display=swap');

:root {
  --color-ink: #1A1A1A;
  --color-accent: #002654;     /* bleu France */
  --color-warm: #B8860B;       /* ocre */
  --color-muted: #555555;
  --color-light: #C9A96E;
  --color-bg: #FFFFFF;
  --color-soft: #F8F6F1;
  --color-border: #E5E0D5;

  --font-serif: 'EB Garamond', Garamond, 'Times New Roman', serif;

  --max-width: 720px;
  --max-width-wide: 920px;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-serif);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* =============================================================
   Header
   ============================================================= */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.site-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.site-title em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-warm);
}

.site-nav {
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
}

.site-nav a {
  font-size: 0.95rem;
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color 0.15s ease;
}

.site-nav a:hover,
.site-nav a.active {
  border-bottom-color: var(--color-warm);
}

/* =============================================================
   Main content
   ============================================================= */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
}

main.wide {
  max-width: var(--max-width-wide);
}

/* =============================================================
   Typography
   ============================================================= */

h1 {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.01em;
}

h1.title-large {
  font-size: 4rem;
  text-align: center;
  margin-top: 2rem;
}

h2 {
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1.2;
  margin: 3rem 0 1rem;
}

h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-ink);
  margin: 2rem 0 0.8rem;
  font-style: italic;
}

p {
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
  text-align: justify;
  hyphens: auto;
}

p.lead {
  font-size: 1.35rem;
  line-height: 1.5;
  color: var(--color-ink);
  font-style: italic;
  margin: 2rem 0 3rem;
  text-align: center;
  font-weight: 400;
}

p.muted {
  color: var(--color-muted);
  font-size: 1rem;
}

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-color: var(--color-warm);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color 0.15s ease;
}

a:hover {
  color: var(--color-warm);
}

strong {
  color: var(--color-accent);
  font-weight: 600;
}

em {
  font-style: italic;
}

ul, ol {
  margin: 1rem 0 1.5rem 1.5rem;
}

li {
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}

/* =============================================================
   Ornements
   ============================================================= */

.ornament {
  text-align: center;
  margin: 3rem 0;
  color: var(--color-light);
  font-size: 1.2rem;
  letter-spacing: 0.5rem;
}

.eyebrow {
  font-size: 0.85rem;
  color: var(--color-warm);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 1.5rem;
}

hr.rule {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 4rem 0;
}

/* =============================================================
   Buttons
   ============================================================= */

.button {
  display: inline-block;
  background: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  padding: 0.9rem 1.8rem;
  border: none;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.1s ease;
  letter-spacing: 0.01em;
}

.button:hover {
  background: var(--color-warm);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button.outline {
  background: transparent;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
}

.button.outline:hover {
  background: var(--color-accent);
  color: #FFFFFF;
}

.button-group {
  display: flex;
  gap: 1rem;
  margin: 2rem 0;
  flex-wrap: wrap;
  justify-content: center;
}

/* =============================================================
   Cards / blocks
   ============================================================= */

.callout {
  background: var(--color-soft);
  padding: 2rem;
  margin: 2.5rem 0;
  border-left: 3px solid var(--color-accent);
  font-style: italic;
  font-size: 1.15rem;
}

.callout.accent {
  background: var(--color-accent);
  color: #FFFFFF;
  border-left: none;
  text-align: center;
  font-style: normal;
  font-weight: 500;
}

.callout.accent strong {
  color: #FFFFFF;
}

/* =============================================================
   Hero (home page)
   ============================================================= */

.hero {
  text-align: center;
  padding: 5rem 0 3rem;
}

.hero .subtitle {
  font-size: 1.5rem;
  color: var(--color-muted);
  font-style: italic;
  margin-bottom: 3rem;
}

.hero .triad {
  margin: 3rem 0;
}

.hero .triad p {
  font-size: 1.4rem;
  color: var(--color-accent);
  font-style: italic;
  text-align: center;
  margin: 0.5rem 0;
  font-weight: 500;
}

/* =============================================================
   Book cover (manifeste.html)
   ============================================================= */

.book-feature {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 3rem;
  align-items: center;
  margin: 3rem 0;
}

.book-feature img {
  width: 100%;
  height: auto;
  display: block;
  box-shadow: 0 8px 32px rgba(0, 38, 84, 0.15);
}

.book-feature .info h2 {
  margin-top: 0;
}

@media (max-width: 700px) {
  .book-feature {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .book-feature img {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* =============================================================
   Prompt section (test-des-ia.html)
   ============================================================= */

.prompt-box {
  background: var(--color-soft);
  border: 1px solid var(--color-border);
  padding: 2rem;
  margin: 2rem 0;
  position: relative;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--color-ink);
  white-space: pre-wrap;
  max-height: 400px;
  overflow-y: auto;
}

.prompt-box pre {
  font-family: inherit;
  white-space: pre-wrap;
  margin: 0;
}

.copy-button-wrap {
  text-align: center;
  margin: 1.5rem 0 2.5rem;
}

.ia-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 1rem;
  margin: 2.5rem 0;
}

.ia-grid a {
  display: block;
  padding: 1.2rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  text-align: center;
  text-decoration: none;
  color: var(--color-ink);
  font-size: 1rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.ia-grid a:hover {
  border-color: var(--color-accent);
  background: var(--color-soft);
  color: var(--color-accent);
}

.ia-grid a strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 0.2rem;
}

.ia-grid a span {
  font-size: 0.85rem;
  color: var(--color-muted);
  font-style: italic;
}

.copy-notice {
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-warm);
  height: 1.2rem;
  margin-top: 0.5rem;
  font-style: italic;
}

/* =============================================================
   Steps
   ============================================================= */

.steps {
  margin: 3rem 0;
}

.step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 1.5rem;
  margin-bottom: 2rem;
  align-items: start;
}

.step-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
}

.step-content h3 {
  margin: 0 0 0.5rem;
  font-style: normal;
  color: var(--color-accent);
}

/* =============================================================
   Footer
   ============================================================= */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 3rem 2rem;
  background: var(--color-soft);
  margin-top: 6rem;
}

.site-footer-inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  text-align: center;
}

.site-footer p {
  font-size: 0.95rem;
  color: var(--color-muted);
  margin-bottom: 0.5rem;
  text-align: center;
}

.site-footer .signature {
  font-size: 1.1rem;
  color: var(--color-accent);
  font-style: italic;
  margin: 1.5rem 0;
}

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

.footer-links {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.footer-links a {
  margin: 0 0.8rem;
}

/* =============================================================
   Responsive
   ============================================================= */

@media (max-width: 700px) {
  html {
    font-size: 16px;
  }

  h1 {
    font-size: 2.4rem;
  }

  h1.title-large {
    font-size: 2.8rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  .site-header-inner {
    padding: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

  .site-nav {
    gap: 1.2rem;
  }

  main {
    padding: 2rem 1.5rem 4rem;
  }

  .hero {
    padding: 2rem 0;
  }

  .step {
    grid-template-columns: 40px 1fr;
    gap: 1rem;
  }

  /* Cards test rapide / test approfondi en colonne sur mobile */
  main.wide > div[style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  .step-number {
    font-size: 1.8rem;
  }

  .prompt-box {
    padding: 1.2rem;
    font-size: 0.85rem;
  }
}

/* =============================================================
   Bloc auteur (le-mouvement.html)
   ============================================================= */

@media (max-width: 700px) {
  main > div[style*="grid-template-columns: 160px 1fr"] {
    grid-template-columns: 1fr !important;
  }

  main > div[style*="grid-template-columns: 160px 1fr"] img {
    max-width: 200px;
    margin: 0 auto;
  }
}

/* =============================================================
   Parcours du visiteur (hero) — 4 étapes cliquables
   ============================================================= */

.parcours {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  max-width: 820px;
  margin: 2.4rem auto 0;
}

.parcours-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.3rem 0.7rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-soft);
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.parcours-step:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 18px rgba(0, 38, 84, 0.08);
}

.parcours-num {
  font-size: 1.6rem;
  color: var(--color-warm);
  line-height: 1;
  margin-bottom: 0.6rem;
}

.parcours-label {
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--color-accent);
  line-height: 1.3;
  margin-bottom: 0.35rem;
}

.parcours-sub {
  font-size: 0.82rem;
  color: var(--color-muted);
  font-style: italic;
}

@media (max-width: 700px) {
  .parcours {
    grid-template-columns: 1fr 1fr;
    gap: 0.7rem;
  }
  .parcours-step {
    padding: 1.1rem 0.5rem;
  }
  .parcours-num { font-size: 1.4rem; }
  .parcours-label { font-size: 0.9rem; }
  .parcours-sub { font-size: 0.78rem; }
}

/* =============================================================
   Cartes IA condensées + détails dépliables
   ============================================================= */

.ia-card {
  margin: 2.2rem 0;
  padding: 1.6rem 1.8rem;
  border-left: 3px solid var(--color-accent);
  background: var(--color-soft);
}

.ia-card details {
  margin-top: 0.6rem;
}

.ia-card summary {
  cursor: pointer;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.92rem;
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.ia-card summary::-webkit-details-marker {
  display: none;
}

.ia-card summary::before {
  content: "+";
  font-size: 1.1rem;
  color: var(--color-warm);
}

.ia-card details[open] summary::before {
  content: "–";
}

.ia-card details p {
  margin-top: 0.8rem;
  font-size: 0.96rem;
}

/* =============================================================
   Timeline 2027-2032
   ============================================================= */

.timeline {
  max-width: 720px;
  margin: 0 auto 2rem;
  position: relative;
  padding-left: 2.2rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.55rem;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-warm), var(--color-border));
}

.tl-step {
  position: relative;
  padding: 0 0 1.9rem 0;
  display: block;
}

.tl-step::before {
  content: "";
  position: absolute;
  left: -1.95rem;
  top: 0.45rem;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-warm);
}

.tl-step.tl-pivot::before {
  background: var(--color-accent);
  border-color: var(--color-accent);
  width: 15px;
  height: 15px;
  left: -2.07rem;
  top: 0.35rem;
}

.tl-date {
  display: block;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-warm);
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.tl-title {
  display: block;
  font-size: 1.12rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
  line-height: 1.3;
}

.tl-desc {
  display: block;
  font-size: 0.96rem;
  line-height: 1.55;
  color: var(--color-ink);
}

@media (max-width: 700px) {
  .timeline { padding-left: 1.8rem; }
  .timeline::before { left: 0.4rem; }
  .tl-step::before { left: -1.68rem; }
  .tl-step.tl-pivot::before { left: -1.8rem; }
  .tl-title { font-size: 1.05rem; }
  .tl-desc { font-size: 0.92rem; }
}