/* ==========================================================================
   blog.css — feuille unique partagée par les 10 articles et la page index
   Reprend exactement la charte du site : mêmes couleurs, polices, espacements
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600&family=Public+Sans:wght@300;400;500;600&display=swap');

:root {
  --obsidian-950: #FAF6EF;
  --obsidian-900: #F2E9DC;
  --obsidian-800: #EAE0CE;
  --obsidian-700: #E4DBCE;
  --obsidian-600: #CDBEA6;
  --champagne-50: #2A2724;
  --champagne-100: #5B554C;
  --champagne-200: #A85C48;
  --champagne-300: #A85C48;
  --champagne-400: #8A4936;
  --sage-300: #8C7B6B;
  --ligne: #E1D5C2;
  --ligne-profonde: #CDBEA6;
  --brique: #A85C48;
  --brique-claire: #D9A98F;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--obsidian-950);
  color: var(--champagne-50);
  font-family: 'Public Sans', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

::selection { background: rgba(168, 92, 72, 0.2); }

/* Scrollbar */
::-webkit-scrollbar { width: 9px; }
::-webkit-scrollbar-track { background: #F2E9DC; }
::-webkit-scrollbar-thumb { background: #CDBEA6; border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: #A85C48; }

/* Layout */
.blog-container {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.blog-wide {
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.blog-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(250, 246, 239, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ligne);
  padding: 1rem 0;
}

.blog-header nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.blog-header .brand {
  font-family: 'Fraunces', Georgia, serif;
  font-size: 1.25rem;
  color: var(--champagne-50);
  text-decoration: none;
}

.blog-header .brand-sub {
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--champagne-200);
  margin-left: 0.5rem;
}

.blog-header .back-link {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--champagne-100);
  text-decoration: none;
  transition: color 0.3s;
}

.blog-header .back-link:hover { color: var(--champagne-50); }

/* Breadcrumb */
.breadcrumb {
  padding-top: 7rem;
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--champagne-100);
}

.breadcrumb a {
  color: var(--champagne-100);
  text-decoration: none;
  transition: color 0.3s;
}

.breadcrumb a:hover { color: var(--champagne-50); }

.breadcrumb .sep { margin: 0 0.5rem; color: var(--obsidian-600); }

/* Typography */
h1 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 300;
  font-size: 2.5rem;
  line-height: 1.1;
  color: var(--champagne-50);
  margin-top: 1.5rem;
  letter-spacing: -0.01em;
}

h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 300;
  font-size: 1.75rem;
  line-height: 1.2;
  color: var(--champagne-50);
  margin-top: 3rem;
  margin-bottom: 1rem;
}

h3 {
  font-family: 'Fraunces', Georgia, serif;
  font-weight: 400;
  font-size: 1.25rem;
  color: var(--champagne-50);
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

p {
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--champagne-100);
  margin-bottom: 1.25rem;
}

p.lead {
  font-size: 1.125rem;
  color: var(--champagne-100);
}

a {
  color: var(--champagne-200);
  text-decoration: underline;
  text-decoration-style: dotted;
  text-underline-offset: 3px;
  transition: color 0.3s;
}

a:hover { color: var(--champagne-50); }

strong { font-weight: 500; color: var(--champagne-50); }

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

li {
  font-weight: 300;
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--champagne-100);
  margin-bottom: 0.5rem;
}

/* Hero image — pleine largeur sous le h1 */
.hero-image {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 1.75rem;
  border: 1px solid var(--ligne);
  margin-top: 2rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 20px 50px -30px rgba(42, 39, 36, 0.25);
}

/* Figure intérieure */
figure {
  margin: 2.5rem 0;
}

figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 1.25rem;
  border: 1px solid var(--ligne);
}

figcaption {
  font-size: 0.8125rem;
  font-weight: 300;
  color: var(--sage-300);
  text-align: center;
  margin-top: 0.75rem;
  font-style: italic;
}

/* Conclusion */
.conclusion {
  margin-top: 3rem;
  padding: 2rem;
  background: var(--obsidian-900);
  border: 1px solid var(--ligne);
  border-radius: 1.5rem;
}

.conclusion p:last-child { margin-bottom: 0; }

/* Articles similaires */
.similar {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid var(--ligne);
}

.similar h2 {
  font-size: 1.5rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.similar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.similar li {
  margin-bottom: 0.75rem;
}

.similar a {
  font-size: 1rem;
  font-weight: 300;
  color: var(--champagne-100);
  text-decoration: none;
  transition: color 0.3s;
}

.similar a:hover { color: var(--champagne-200); }

/* Footer */
.blog-footer {
  margin-top: 5rem;
  padding: 3.5rem 0;
  border-top: 1px solid var(--ligne);
  background: var(--obsidian-800);
  text-align: center;
}

.blog-footer a {
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--champagne-100);
  text-decoration: none;
  transition: color 0.3s;
}

.blog-footer a:hover { color: var(--champagne-50); }

.blog-footer .copyright {
  margin-top: 2rem;
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--champagne-100);
  opacity: 0.6;
}

/* Blog index page */
.blog-index { padding-top: 7rem; }

.blog-index h1 {
  font-size: 3rem;
  margin-bottom: 3rem;
}

.blog-index h2 {
  font-size: 1.5rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--champagne-200);
}

.blog-index ul {
  list-style: none;
  margin: 0 0 2rem 0;
  padding: 0;
}

.blog-index li { margin-bottom: 0.5rem; }

.blog-index a {
  font-size: 1.0625rem;
  font-weight: 300;
  color: var(--champagne-100);
  text-decoration: none;
  transition: color 0.3s;
}

.blog-index a:hover { color: var(--champagne-200); }

/* Hairline */
.hairline {
  height: 1px;
  background: linear-gradient(to right, transparent, var(--ligne), transparent);
  margin: 2.5rem 0;
}

/* Responsive */
@media (max-width: 640px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }
  .blog-index h1 { font-size: 2.25rem; }
}