/* Base : remise à zéro, typographie, boutons, en-tête, pied de page. */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--entete); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--blanc);
  color: var(--encre);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 300;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, p, ul, ol, dl, dd, figure, blockquote { margin: 0; }
ul, ol { padding: 0; list-style: none; }
strong { font-weight: 600; }
button, input, select, textarea { font: inherit; color: inherit; }

.enveloppe { width: 100%; max-width: calc(var(--largeur) + 2 * var(--gouttiere)); margin: 0 auto; padding: 0 var(--gouttiere); }
.visuel-masque { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.lien-evitement { position: absolute; left: 16px; top: -60px; z-index: 100; padding: 10px 16px; background: var(--blanc); color: var(--marine); }
.lien-evitement:focus { top: 16px; }
:focus-visible { outline: 2px solid var(--orange); outline-offset: 3px; }

/* ---------- Typographie ---------- */
.etiquette {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--mono); font-size: 12px; font-weight: 500;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--encre-2);
}
.etiquette--sombre { color: rgba(255, 255, 255, 0.66); }
.tiret { display: inline-block; width: 28px; height: 1px; background: currentColor; flex: none; }

.titre {
  font-family: var(--serif); font-weight: 300;
  font-size: clamp(34px, 4.6vw, 58px); line-height: 1.08; letter-spacing: -0.015em;
  color: var(--marine); text-wrap: balance;
}
.titre em { font-style: italic; color: var(--bleu); }
.titre--sombre { color: var(--blanc); }
.titre--sombre em { color: var(--em-sombre); }
.titre--moyen { font-size: clamp(30px, 3.4vw, 42px); }
.titre--accueil { font-size: clamp(38px, 4.6vw, 64px); color: var(--blanc); max-width: 19ch; }
.titre--accueil em { color: var(--em-accueil); }

.chapeau { max-width: 60ch; font-size: clamp(17px, 1.4vw, 19px); color: var(--encre-2); }
.chapeau--sombre { color: rgba(255, 255, 255, 0.78); }

/* ---------- Boutons ---------- */
.bouton {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 22px;
  border: 1px solid transparent; border-radius: var(--rayon);
  font-family: var(--sans); font-size: 15px; font-weight: 500; text-decoration: none;
  cursor: pointer;
  transition: background-color 200ms, color 200ms, border-color 200ms, transform 200ms var(--courbe);
}
.bouton:hover { transform: translateY(-1px); }
.bouton--petit { min-height: 40px; padding: 0 16px; font-size: 14px; }
.bouton--clair { background: var(--blanc); color: var(--marine); }
.bouton--clair:hover { background: #EEF3F9; }
.bouton--contour-sombre { background: transparent; color: var(--blanc); border-color: rgba(255, 255, 255, 0.4); }
.bouton--contour-sombre:hover { border-color: var(--blanc); }
.bouton--marine { background: var(--marine); color: var(--blanc); }
.bouton--marine:hover { background: var(--marine-800); }
.bouton--orange { background: var(--orange); color: var(--marine-900); }
.bouton--orange:hover { filter: brightness(1.08); }

/* ---------- Barre de lecture ---------- */
.progression { position: fixed; inset: 0 0 auto 0; height: 2px; z-index: 60; pointer-events: none; }
.progression span { display: block; height: 100%; width: 100%; background: var(--orange); transform-origin: 0 50%; transform: scaleX(var(--lu, 0)); }

/* ---------- En-tête ---------- */
.entete {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--entete);
  display: flex; flex-direction: column;
  color: var(--blanc);
  border-bottom: 1px solid transparent;
  transition: background-color 300ms, color 300ms, border-color 300ms;
}
.entete--plein { background: rgba(255, 255, 255, 0.96); color: var(--encre); border-bottom-color: var(--ligne); backdrop-filter: blur(8px); }
.entete__rang { flex: 1; display: flex; align-items: center; gap: 24px; }

/* Bandeau institutionnel : la tutelle et le partenaire financier, toujours lisibles. */
.bandeau { height: var(--bandeau); background: var(--blanc); color: var(--marine); border-bottom: 1px solid var(--ligne); }
.bandeau__rang { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.bandeau__tutelle { display: flex; align-items: center; gap: 14px; min-width: 0; }
.bandeau__tutelle::before { content: ""; flex: none; width: 21px; height: 14px; background: linear-gradient(90deg, #F77F00 0 33.3%, #FFFFFF 33.3% 66.6%, #009E60 66.6%); box-shadow: 0 0 0 1px var(--ligne); }
.bandeau__republique { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--encre-2); white-space: nowrap; }
.bandeau__ministere { font-size: 15.5px; font-weight: 600; color: var(--marine); padding-left: 14px; border-left: 1px solid var(--ligne); }
.bandeau__partenaire { display: flex; align-items: center; gap: 12px; flex: none; font-size: 12.5px; color: var(--encre-2); }
.bandeau__partenaire img { height: 34px; width: auto; }
@media (max-width: 860px) {
  .bandeau__republique, .bandeau__partenaire span { display: none; }
  .bandeau__ministere { padding-left: 0; border-left: 0; font-size: 13px; line-height: 1.25; }
  .bandeau__partenaire img { height: 24px; }
}
.entete__marque { display: flex; align-items: center; gap: 12px; text-decoration: none; flex: none; }
.entete__marque img { width: 44px; height: 44px; border-radius: 50%; background: var(--blanc); }
.entete__sigle { font-family: var(--sans); font-weight: 600; font-size: 17px; letter-spacing: 0.08em; }
.entete__nav { display: flex; gap: 26px; margin-left: auto; }
.entete__nav a { position: relative; padding: 6px 0; font-size: 14.5px; font-weight: 400; text-decoration: none; opacity: 0.88; }
.entete__nav a::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: currentColor; transform: scaleX(0); transform-origin: 0 50%; transition: transform 300ms var(--courbe); }
.entete__nav a:hover, .entete__nav a[aria-current="true"] { opacity: 1; }
.entete__nav a:hover::after, .entete__nav a[aria-current="true"]::after { transform: scaleX(1); }
.entete__nav a[aria-current="true"]::after { background: var(--orange); }
.entete__actions { display: flex; align-items: center; gap: 12px; }
.entete--plein .bouton--clair { background: var(--marine); color: var(--blanc); }
.entete__menu { display: none; width: 44px; height: 44px; border: 0; background: none; cursor: pointer; flex-direction: column; justify-content: center; align-items: center; gap: 6px; }
.entete__menu span:not(.visuel-masque) { display: block; width: 22px; height: 1.5px; background: currentColor; transition: transform 250ms; }
.entete__menu[aria-expanded="true"] span:nth-of-type(2) { transform: translateY(3.75px) rotate(45deg); }
.entete__menu[aria-expanded="true"] span:nth-of-type(3) { transform: translateY(-3.75px) rotate(-45deg); }

@media (max-width: 1080px) {
  .entete__menu { display: flex; }
  .entete__nav {
    position: fixed; top: var(--entete); left: 0; right: 0;
    flex-direction: column; gap: 0; margin: 0;
    padding: 8px var(--gouttiere) 24px;
    background: var(--blanc); color: var(--encre); border-bottom: 1px solid var(--ligne);
    visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity 250ms, transform 250ms var(--courbe), visibility 250ms;
  }
  .entete__nav a { padding: 14px 0; border-bottom: 1px solid var(--ligne); font-size: 16px; }
  .entete__nav a::after { display: none; }
  .entete--ouvert .entete__nav { visibility: visible; opacity: 1; transform: none; }
  .entete--ouvert { background: var(--blanc); color: var(--encre); }
  .entete--ouvert .bouton--clair { background: var(--marine); color: var(--blanc); }
}
@media (max-width: 560px) {
  .entete__actions .bouton { display: none; }
  .entete__actions { margin-left: auto; }
}

/* ---------- Pied de page ---------- */
.pied { background: var(--marine-900); color: rgba(255, 255, 255, 0.78); font-size: 15px; padding: 64px 0 28px; }
.pied__rang { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid var(--ligne-sombre); }
.pied__marque { display: flex; gap: 18px; align-items: center; max-width: 380px; }
.pied__marque img { width: 72px; height: 72px; border-radius: 50%; background: var(--blanc); flex: none; }
.pied__marque p { font-family: var(--serif); font-size: 19px; line-height: 1.35; color: var(--blanc); }
.pied__colonne { display: grid; gap: 6px; align-content: start; }
.pied__colonne .etiquette:not(:first-child) { margin-top: 14px; }
.pied__bm { width: 170px; height: auto; margin: 4px 0; }
.pied__bas { display: flex; justify-content: space-between; gap: 16px; padding-top: 22px; font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; color: rgba(255, 255, 255, 0.5); }
@media (max-width: 860px) {
  .pied__rang { grid-template-columns: 1fr; }
  .pied__bas { flex-direction: column; }
}