/* ==========================================================================
   Site vitrine A3D — feuille de styles partagée
   Palette et typographies issues des maquettes « Refonte site A3D » (07/2026)
   ========================================================================== */

:root {
  --serif: 'Spectral', Georgia, serif;
  --sans: 'Public Sans', system-ui, -apple-system, sans-serif;
  --mono: 'Space Mono', 'Courier New', monospace;

  --marine: #16273f;        /* bleu principal */
  --marine-fonce: #0f1d31;  /* header / footer */
  --creme: #f7f5f0;         /* fond de page */
  --papier: #fdfcf9;        /* bandes claires */
  --rose: #d6bdb3;          /* accent rose poudré */
  --encre: #14213a;         /* texte titres */
  --texte: #41434a;         /* texte courant */
  --sourdine: #6c6e74;      /* texte secondaire */
  --ligne: #e3e0d8;         /* filets clairs */
  --ligne-sombre: #2c3e58;  /* filets sur fond marine */
  --nav-lien: #9fb0c9;
  --bouton-clair: #f4ece9;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--sans);
  color: var(--encre);
  background: var(--creme);
  min-height: 100vh;
  -webkit-text-size-adjust: 100%;
}
a { transition: color .18s ease, background .18s ease, border-color .18s ease; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--rose); outline-offset: 2px; }
img { max-width: 100%; }

.acces-rapide {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: #fff; color: var(--marine); padding: 10px 16px; font-weight: 600;
}
.acces-rapide:focus { left: 8px; top: 8px; }

.conteneur { max-width: 1240px; margin: 0 auto; padding-left: 56px; padding-right: 56px; }

/* ===== En-tête ===== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(15, 29, 49, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid #243651;
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 16px 56px;
}
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; }
.brand-logo {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--papier); border-radius: 6px; padding: 5px 7px;
}
.brand-logo img { height: 34px; width: auto; display: block; }
.brand-name {
  font-family: var(--serif); font-weight: 600; font-size: 14px;
  line-height: 1.3; color: #eef0f4; max-width: 210px;
}
.site-nav { display: flex; align-items: center; gap: 32px; font-size: 14px; font-weight: 500; }
.site-nav a { color: var(--nav-lien); text-decoration: none; }
.site-nav a:hover { color: #fff; }
.site-nav a.actif { color: #fff; border-bottom: 2px solid var(--rose); padding-bottom: 3px; }
.btn-membre {
  margin-left: 8px; background: var(--bouton-clair); color: var(--marine) !important;
  font-weight: 600; padding: 9px 18px; border-radius: 4px;
}
.btn-membre:hover { background: #fbf5f3; }
.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 40px; padding: 8px 10px;
  background: transparent; border: 1px solid #33465f; border-radius: 6px; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: #eef0f4; border-radius: 1px; }

/* ===== Éléments communs ===== */
.kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: .2em;
  text-transform: uppercase; color: var(--rose); margin: 0 0 14px;
}
.kicker--encre { color: #000; }
.titre-hero {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(34px, 5.5vw, 58px); line-height: 1.05;
  letter-spacing: -0.015em; margin: 0 0 24px; color: var(--marine);
}
.titre-hero--accueil { font-size: clamp(38px, 6vw, 66px); line-height: 1.03; margin-bottom: 26px; }
.titre-section {
  font-family: var(--serif); font-weight: 600;
  font-size: clamp(28px, 4vw, 40px); line-height: 1.1; margin: 0; color: var(--marine);
}
.chapeau { font-size: 19px; line-height: 1.65; color: var(--texte); max-width: 540px; margin: 0; }

.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 15px;
  padding: 16px 28px; border-radius: 3px; text-align: center;
}
.btn--plein { background: var(--marine); color: var(--creme); }
.btn--plein:hover { background: var(--marine-fonce); }
.btn--contour { background: transparent; color: var(--marine); border: 1px solid #c3beb2; }
.btn--contour:hover { border-color: var(--marine); }
.btn--clair {
  background: var(--bouton-clair); color: var(--marine); font-weight: 700;
  padding: 15px 24px; border-radius: 4px; margin-top: 4px;
}
.btn--clair:hover { background: #fbf5f3; }

/* Encart sombre (colonne de droite des pages intérieures) */
.carte-sombre {
  background: var(--marine); color: #eef0f4; border-radius: 8px;
  padding: 36px 34px; display: flex; flex-direction: column; gap: 16px;
}
.carte-sombre h2 { font-family: var(--serif); font-weight: 600; font-size: 24px; margin: 0; color: #fff; }
.carte-sombre .texte-encart { font-size: 14.5px; line-height: 1.6; color: #b6c1d2; margin: 0; }
.note-encart { border-top: 1px solid var(--ligne-sombre); padding-top: 16px; margin-top: 4px; }
.note-label {
  display: block; font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--nav-lien); margin-bottom: 5px;
}
.note-encart span { font-size: 14.5px; color: #dfe4ec; }

/* Héros */
.hero {
  display: grid; grid-template-columns: 1.5fr 1fr; gap: 56px;
  padding-top: 80px; padding-bottom: 72px; align-items: start;
}
.hero--accueil { grid-template-columns: 1.55fr 1fr; gap: 60px; padding-top: 88px; padding-bottom: 80px; align-items: end; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* Sections et bandes */
.section { padding-top: 80px; padding-bottom: 76px; }
.bande-claire { border-top: 1px solid var(--ligne); background: var(--papier); }
.bande-sombre { background: var(--marine); color: #eef0f4; }
.bande-sombre .kicker { color: var(--rose); }
.bande-sombre .titre-section { color: #fff; }

/* Grilles */
.grille-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
.grille-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grille-domaines { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--ligne-sombre); }

/* Cartes claires */
.carte {
  background: #fff; border: 1px solid var(--ligne); border-radius: 8px;
  padding: 32px 30px; display: flex; flex-direction: column; gap: 12px;
}
.carte h3 { font-family: var(--serif); font-weight: 600; font-size: 22px; margin: 4px 0 0; color: var(--marine); }
.carte p { font-size: 15px; line-height: 1.6; color: var(--texte); margin: 0; }
.num { font-family: var(--mono); font-size: 14px; color: var(--rose); }

/* Domaines d'intervention (fond marine) */
.domaine { padding: 30px 26px 10px; border-right: 1px solid var(--ligne-sombre); }
.domaine:last-child { border-right: none; }
.domaine .num { color: #7c8aa3; }
.domaine h3 { font-family: var(--serif); font-weight: 600; font-size: 22px; margin: 16px 0 10px; color: #fff; }
.domaine p { font-size: 14.5px; line-height: 1.58; color: #a9b4c6; margin: 0; }

/* Parcours numéroté */
.etapes { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--ligne); }
.etapes li {
  display: grid; grid-template-columns: 64px 1fr; gap: 28px;
  align-items: start; padding: 30px 0; border-bottom: 1px solid var(--ligne);
}
.etapes .num-etape { font-family: var(--serif); font-size: 30px; font-weight: 600; color: var(--rose); line-height: 1; }
.etapes h3 { font-family: var(--serif); font-weight: 600; font-size: 22px; margin: 0 0 8px; color: var(--marine); }
.etapes p { font-size: 16px; line-height: 1.65; color: var(--texte); margin: 0; max-width: 760px; }

/* Page Bureau */
.carte-personne {
  border-radius: 8px; padding: 26px 22px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 4px;
  background: #fff; border: 1px solid var(--ligne);
}
.carte-personne--direction { background: #f5f1e8; border-color: #e3ddcd; padding: 28px 26px; }
.avatar {
  width: 58px; height: 58px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 19px; font-weight: 600; margin-bottom: 12px;
  background: #eef0ee; border: 1px solid #ddd9cf; color: var(--marine); flex: none;
}
.avatar--marine { width: 60px; height: 60px; background: var(--marine); border-color: var(--marine); color: #f5f1e8; font-size: 20px; }
.fonction {
  font-family: var(--mono); font-size: 10px; letter-spacing: .14em;
  text-transform: uppercase; color: #5f7185; margin: 0 0 4px;
}
.carte-personne .fonction--membre { letter-spacing: .1em; color: var(--rose); }
.carte-personne h2, .carte-personne h3 { font-family: var(--serif); font-weight: 600; font-size: 18px; line-height: 1.2; margin: 0; color: var(--marine); }
.carte-personne .barreau { font-size: 13px; color: var(--sourdine); margin: 3px 0 0; }
.intercalaire {
  font-family: var(--mono); font-size: 12px; letter-spacing: .2em; text-transform: uppercase;
  color: var(--rose); margin: 0 0 26px; border-top: 1px solid var(--ligne); padding-top: 28px;
}

/* Pied de page */
.site-footer { background: var(--marine-fonce); color: #c3cad6; }
.footer-haut {
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px;
  padding-top: 64px; padding-bottom: 48px; border-bottom: 1px solid #213450;
}
.footer-col { display: flex; flex-direction: column; gap: 14px; }
.foot-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: .16em;
  text-transform: uppercase; color: #647a99; margin: 0 0 4px;
}
.footer-col a { color: #c3cad6; text-decoration: none; font-size: 14.5px; }
.footer-col a:hover { color: #fff; }
.footer-titre { font-family: var(--serif); font-weight: 600; font-size: 18px; line-height: 1.35; margin: 0; color: #fff; }
.footer-sous { font-size: 13px; line-height: 1.65; margin: 0; color: var(--nav-lien); }
.footer-bas {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap; padding-top: 22px; padding-bottom: 28px;
}
.footer-bas p { font-size: 13px; color: #647a99; margin: 0; }
.footer-bas a { font-size: 13px; color: #647a99; text-decoration: none; }
.footer-bas a:hover { color: #fff; }

/* Pages légales / texte long */
.page-texte { max-width: 760px; padding-top: 72px; padding-bottom: 88px; }
.page-texte h1 { font-family: var(--serif); font-weight: 600; font-size: clamp(30px, 4.5vw, 44px); line-height: 1.1; margin: 0 0 34px; color: var(--marine); }
.page-texte h2 { font-family: var(--serif); font-weight: 600; font-size: 24px; margin: 38px 0 12px; color: var(--marine); }
.page-texte p, .page-texte li { font-size: 16px; line-height: 1.7; color: var(--texte); }
.page-texte a { color: var(--marine); }

/* ===== Adaptation tablette / mobile ===== */
@media (max-width: 1020px) {
  .conteneur { padding-left: 28px; padding-right: 28px; }
  .header-inner { padding: 14px 20px; }
  .nav-toggle { display: flex; }
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: flex-start; gap: 18px;
    background: var(--marine-fonce); padding: 20px 24px 26px;
    border-bottom: 1px solid #243651; font-size: 16px;
  }
  .site-nav.ouvert { display: flex; }
  .site-nav a.actif { border-bottom: none; color: #fff; }
  .btn-membre { margin-left: 0; padding: 11px 20px; }
  .hero, .hero--accueil { grid-template-columns: 1fr; gap: 40px; padding-top: 52px; padding-bottom: 52px; }
  .grille-3 { grid-template-columns: 1fr 1fr; }
  .grille-domaines { grid-template-columns: 1fr 1fr; border-top: none; }
  .domaine { border-right: none; border-top: 1px solid var(--ligne-sombre); }
  .section { padding-top: 56px; padding-bottom: 56px; }
  .footer-haut { grid-template-columns: 1fr 1fr; gap: 36px; padding-top: 48px; }
}
@media (max-width: 780px) {
  .conteneur { padding-left: 20px; padding-right: 20px; }
  .brand-name { display: none; }
  .grille-2, .grille-3 { grid-template-columns: 1fr; }
  .grille-domaines { grid-template-columns: 1fr; }
  .etapes li { grid-template-columns: 44px 1fr; gap: 16px; }
  .carte-sombre { padding: 28px 24px; }
  .footer-haut { grid-template-columns: 1fr; gap: 32px; }
  .chapeau { font-size: 17px; }
}
@media (max-width: 480px) {
  .hero-actions .btn { width: 100%; }
}