/* =========================================================
   Astronomie ancienne — feuille de style commune
   Ambiance « nuit de navigation » + touche d'azulejo
   ========================================================= */

:root {
  --nuit:        #0e1824;
  --nuit-2:      #122031;
  --nuit-3:      #17283a;
  --trait:       #2a3a4c;
  --trait-2:     #3a4b5e;
  --or:          #d6b46c;
  --or-clair:    #e8c77f;
  --texte:       #efe6d2;
  --texte-doux:  #b7ab93;
  --azul:        #1f4196;
  --azul-fond:   #f4efe2;
  --serif:       "Cormorant Garamond", Georgia, "Times New Roman", serif;
  --capitales:   "Cormorant SC", Georgia, "Times New Roman", serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  background: var(--nuit);
  color: var(--texte);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.45;
}
a { color: var(--texte); text-decoration: none; }
a:hover { color: var(--or-clair); }
a:focus-visible { outline: 2px solid var(--or); outline-offset: 3px; }

/* ---------- bandeau du site ---------- */
.barre {
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 8px;
  padding: 12px 28px;
  border-bottom: 1px solid var(--trait);
  font-size: 17px;
}
.barre a { padding: 6px 0; }
.barre .accueil { color: var(--or); }

/* ---------- en-tête ---------- */
.entete {
  position: relative; overflow: hidden;
  text-align: center;
  padding: 56px 24px 40px;
  background: radial-gradient(ellipse at 50% 70%, #1c3048 0%, var(--nuit) 65%);
}
.entete .ciel { position: absolute; inset: 0; width: 100%; height: 100%; }
.entete .contenu {
  position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.surtitre {
  margin: 0;
  font-family: var(--capitales); font-size: 18px; letter-spacing: .3em;
  color: var(--or);
}
.entete h1 {
  margin: 0;
  font-weight: 500; font-size: clamp(46px, 7vw, 86px); line-height: 1.05;
}
.accroche {
  margin: 4px 0 20px;
  font-style: italic; font-size: 22px; color: #c8bca3;
}
.astrolabe {
  width: 260px; max-width: 70%; height: auto;
  filter: drop-shadow(0 0 28px rgba(214,180,108,.25)) drop-shadow(0 14px 18px rgba(0,0,0,.5));
}

/* ---------- contenu ---------- */
main { max-width: 1160px; margin: 0 auto; padding: 48px 28px 32px; }
.titre-section {
  margin: 0 0 24px; text-align: center;
  font-family: var(--capitales); font-weight: 600; font-size: 26px; letter-spacing: .2em;
  color: var(--or);
}

.chapitres {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fill, minmax(max(300px, calc(50% - 7px)), 1fr)); gap: 14px;
}
.carte {
  display: flex; gap: 18px; align-items: center;
  height: 100%; min-height: 44px; padding: 16px 20px;
  border: 1px solid var(--trait); background: var(--nuit-2);
  transition: border-color .15s, background .15s;
}
.carte:hover, .carte:focus-visible { border-color: var(--or); background: var(--nuit-3); }
.numero {
  flex: 0 0 auto; width: 46px; height: 46px;
  border: 1px solid var(--or); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--capitales); font-size: 18px; color: var(--or);
}
.libelle { display: flex; flex-direction: column; }
.libelle strong { font-weight: 600; font-size: 22px; line-height: 1.15; }
.libelle em, .annexe em { font-size: 17px; color: var(--texte-doux); }

.separateur {
  display: flex; align-items: center; gap: 16px;
  margin: 48px 0 24px;
}
.separateur::before, .separateur::after {
  content: ""; flex: 1; height: 1px; background: var(--trait-2);
}
/* l'azulejo de Sintra, posé entre les deux parties du menu */
.azulejo {
  margin: 0; flex: 0 0 auto;
  width: 120px; height: 120px;
  padding: 5px; background: var(--nuit);
  border: 1px solid var(--or);
  box-shadow: 0 10px 24px rgba(0,0,0,.45);
}
.azulejo img { display: block; width: 100%; height: 100%; object-fit: cover; }

.annexes {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px;
}
.annexe {
  display: flex; flex-direction: column; align-items: center; text-align: center; gap: 2px;
  height: 100%; padding: 22px 20px;
  border: 1px solid var(--trait);
  transition: border-color .15s, background .15s;
}
.annexe:hover, .annexe:focus-visible { border-color: var(--or); background: var(--nuit-3); }
.annexe strong { font-weight: 600; font-size: 24px; }

.ressources {
  margin: 32px 0 0;
  display: flex; justify-content: center; flex-wrap: wrap; gap: 8px 40px;
  font-family: var(--capitales); font-size: 20px; letter-spacing: .08em;
}
.ressources a { padding: 10px 0; color: var(--or); }
.ressources a:hover { color: var(--or-clair); text-decoration: underline; text-underline-offset: 5px; }

/* ---------- pied de page ---------- */
.pied {
  max-width: 1160px; margin: 0 auto;
  padding: 20px 28px 40px;
  display: flex; justify-content: flex-end; flex-wrap: wrap; gap: 8px;
  font-size: 16px;
  border-top: 1px solid var(--trait);
}
.pied a { color: var(--texte-doux); }

@media (max-width: 600px) {
  .surtitre { font-size: 15px; letter-spacing: .16em; }
  .barre { padding: 10px 16px; }
  main { padding: 36px 16px 24px; }
  .chapitres { grid-template-columns: 1fr; }
  .carte { padding: 14px 16px; }
}

/* ---------- cadre d'un module encore en Flash (module.html) ---------- */
main.scene {
  padding: 0; max-width: none;
  position: relative;
  width: min(100% - 32px, 1000px);
  aspect-ratio: 1000 / 700;
  margin: 28px auto;
  background: #fff;
  border: 1px solid var(--or);
  box-shadow: 0 14px 40px rgba(0,0,0,.5);
}