:root {
  --fond: #faf8f4;
  --texte: #2b2824;
  --discret: #7a736a;
  --trait: #e4ded4;
  --accent: #8a4b2a;
  --carte: #ffffff;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fond: #1c1a17;
    --texte: #ece6dc;
    --discret: #a59d91;
    --trait: #38332c;
    --accent: #e0a07a;
    --carte: #24211d;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
}

a { color: inherit; }

img { max-width: 100%; height: auto; display: block; }

.entete {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 32px;
  max-width: 1280px;
  margin: 0 auto;
  padding: 40px 24px 24px;
  border-bottom: 1px solid var(--trait);
}

.marque { text-decoration: none; display: flex; flex-direction: column; }
.marque-nom { font-family: var(--serif); font-size: 2rem; line-height: 1.1; letter-spacing: .01em; }
.marque-sous-titre { color: var(--discret); text-transform: uppercase; letter-spacing: .18em; font-size: .78rem; margin-top: 6px; }

.entete nav { display: flex; gap: 24px; }
.entete nav a { text-decoration: none; color: var(--discret); padding: 4px 0; border-bottom: 1px solid transparent; }
.entete nav a:hover, .entete nav a[aria-current] { color: var(--texte); border-bottom-color: var(--accent); }

main { max-width: 1280px; margin: 0 auto; padding: 32px 24px 48px; }

/* Galerie en colonnes : chaque tableau garde ses proportions. */
.galerie { columns: 3 300px; column-gap: 28px; }

.carte {
  display: block;
  break-inside: avoid;
  margin-bottom: 32px;
  text-decoration: none;
}
.carte img {
  width: 100%;
  background: var(--trait);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .08), 0 6px 18px rgba(0, 0, 0, .06);
  transition: transform .25s ease, box-shadow .25s ease;
}
.carte:hover img { transform: translateY(-3px); box-shadow: 0 2px 4px rgba(0, 0, 0, .1), 0 12px 28px rgba(0, 0, 0, .1); }
.carte-titre { display: block; font-family: var(--serif); font-size: 1.15rem; margin-top: 12px; }
.carte-details { display: block; color: var(--discret); font-size: .88rem; }

.vendu, .prix { white-space: nowrap; }
.vendu { color: var(--accent); }
.vendu::before { content: "● "; font-size: .7em; vertical-align: .15em; }

.vide { text-align: center; color: var(--discret); font-family: var(--serif); font-size: 1.3rem; padding: 80px 0; }

/* Page d'un tableau */
.tableau { display: grid; grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); gap: 40px; align-items: start; }
.tableau figure { margin: 0; }
.tableau figure img {
  margin: 0 auto;
  max-height: 85vh;
  width: auto;
  box-shadow: 0 2px 4px rgba(0, 0, 0, .08), 0 12px 32px rgba(0, 0, 0, .1);
}
.tableau h1 { font-family: var(--serif); font-weight: normal; font-size: 2rem; line-height: 1.2; margin: 0 0 8px; }
.tableau-details { color: var(--discret); margin: 0; }

.voisins {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 16px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--trait);
  font-size: .95rem;
}
.voisins a { color: var(--discret); text-decoration: none; }
.voisins a:hover { color: var(--texte); }
.voisins a[rel="next"] { text-align: right; }

.a-propos { max-width: 680px; }
.a-propos h1 { font-family: var(--serif); font-weight: normal; font-size: 2rem; }
.a-propos h2 { font-family: var(--serif); font-weight: normal; font-size: 1.4rem; margin-top: 40px; }
.a-propos a { color: var(--accent); }

/* Annonce de la prochaine exposition, en haut de la galerie */
.bandeau {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 16px;
  margin-bottom: 32px;
  padding: 14px 18px;
  background: var(--carte);
  border: 1px solid var(--trait);
  border-left: 3px solid var(--accent);
  text-decoration: none;
}
.bandeau-etiquette { color: var(--accent); text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; font-weight: 600; }
.bandeau strong { font-family: var(--serif); font-weight: normal; font-size: 1.1rem; }
.bandeau-fleche { margin-left: auto; color: var(--accent); }

/* Page Expositions */
.expositions { max-width: 860px; }
.expositions h1 { font-family: var(--serif); font-weight: normal; font-size: 2rem; }
.expositions h2 {
  font-family: var(--sans);
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .16em;
  color: var(--discret);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--trait);
}
.expo { display: grid; grid-template-columns: 200px 1fr; gap: 28px; margin-bottom: 36px; align-items: start; }
.expo-sans-affiche { grid-template-columns: 1fr; }
.expo-affiche img { box-shadow: 0 1px 2px rgba(0, 0, 0, .08), 0 6px 18px rgba(0, 0, 0, .08); }
.expo h3 { font-family: var(--serif); font-weight: normal; font-size: 1.5rem; line-height: 1.25; margin: 0 0 4px; }
.expo-dates { color: var(--accent); margin: 0; font-weight: 600; }
.expo-lieu { color: var(--discret); margin: 0; }

.pied { text-align: center; color: var(--discret); font-size: .82rem; padding: 24px; border-top: 1px solid var(--trait); max-width: 1280px; margin: 0 auto; }

@media (max-width: 760px) {
  .entete { padding: 24px 16px 16px; }
  .marque-nom { font-size: 1.6rem; }
  main { padding: 24px 16px 40px; }
  .galerie { columns: 2 150px; column-gap: 14px; }
  .carte { margin-bottom: 22px; }
  .carte-titre { font-size: 1rem; margin-top: 8px; }
  .tableau { grid-template-columns: 1fr; gap: 20px; }
  .tableau figure { margin: 0 -16px; }
  .tableau figure img { max-height: none; width: 100%; box-shadow: none; }
  .entete nav { gap: 18px; }
  .expo { grid-template-columns: 110px 1fr; gap: 16px; }
  .expo h3 { font-size: 1.25rem; }
  .voisins { grid-template-columns: 1fr 1fr; }
  .voisins a[href="../index.html"] { grid-column: 1 / -1; grid-row: 2; text-align: center; }
}