/* header.css — cf. components/header.md */

@keyframes nav-link-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  width: 100%;
  background: var(--color-beige);
  box-shadow: var(--shadow-header);
  transition: background-color var(--transition-base) var(--easing-standard),
              box-shadow var(--transition-base) var(--easing-standard);
}

/* Verre depoli au scroll (le contenu glisse floute derriere la barre) - repli automatique
   sur le fond beige opaque ci-dessus si backdrop-filter n'est pas supporte. */
@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .site-header:not(.site-header--transparent) {
    background: rgba(239, 230, 218, 0.85);
    -webkit-backdrop-filter: blur(14px) saturate(160%);
    backdrop-filter: blur(14px) saturate(160%);
  }
}

/* Fine ligne doree en filet degrade (plus "signature" qu'un trait plat uni), retour design. */
.site-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--color-gold) 50%, transparent);
  opacity: 0.7;
  transition: opacity var(--transition-base) var(--easing-standard);
}

/* Etat transparent uniquement sur l'accueil, hero plein ecran, avant le seuil de scroll */
.site-header--transparent {
  background: linear-gradient(to bottom, rgba(22, 21, 19, 0.45), rgba(22, 21, 19, 0));
  box-shadow: none;
}

.site-header--transparent::after {
  opacity: 0;
}

.site-header--transparent .nav-link,
.site-header--transparent .lang-switch__btn {
  color: var(--color-white);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  /* Barre plus haute et aeree (retour client : header trop bas) */
  padding-block: var(--space-md);
}

@media (min-width: 1024px) {
  .site-header__inner {
    padding-block: var(--space-lg);
  }
}

.site-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

/* Monogramme officiel (or sur fond transparent, cf. _logo.php) : lisible tel quel sur fond
   cream comme sur le hero sombre - pas de bascule de couleur selon l'etat du header. */
.site-header__logo img {
  height: 52px;
  width: auto;
  transition: transform var(--transition-slow) var(--easing-luxe);
}

@media (min-width: 1024px) {
  .site-header__logo img {
    height: 58px;
  }
}

.site-header__logo:hover img {
  transform: scale(1.04);
}

/* CTA du header : sobre et discret (retour client : boutons "trop IA").
   Contour fin, sans aplat clinquant ; se remplit doucement au survol.
   S'adapte a l'etat transparent (au-dessus du hero) via les regles plus bas. */
.btn--nav-cta {
  min-height: 42px;
  padding-inline: var(--space-lg);
  letter-spacing: 0.06em;
  background: transparent;
  border: 1px solid var(--color-gold-dark);
  color: var(--color-black);
}

.btn--nav-cta:hover,
.btn--nav-cta:focus-visible {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

.site-header--transparent .btn--nav-cta {
  border-color: rgba(255, 255, 255, 0.6);
  color: var(--color-white);
}

.site-header--transparent .btn--nav-cta:hover,
.site-header--transparent .btn--nav-cta:focus-visible {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-black);
}

.main-nav {
  display: none;
}

.header-actions {
  display: none;
}

@media (min-width: 1024px) {
  .main-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-inline: auto;
  }

  /* Apparition progressive du menu au chargement plutot que tout d'un bloc (retour design). */
  .main-nav .nav-link {
    animation: nav-link-in 500ms var(--easing-luxe) both;
  }

  .main-nav .nav-link:nth-child(1) { animation-delay: 80ms; }
  .main-nav .nav-link:nth-child(2) { animation-delay: 130ms; }
  .main-nav .nav-link:nth-child(3) { animation-delay: 180ms; }
  .main-nav .nav-link:nth-child(4) { animation-delay: 230ms; }
  .main-nav .nav-link:nth-child(5) { animation-delay: 280ms; }
  .main-nav .nav-link:nth-child(6) { animation-delay: 330ms; }

  @media (prefers-reduced-motion: reduce) {
    .main-nav .nav-link {
      animation: none;
    }
  }

  .nav-link {
    position: relative;
    font-size: var(--font-size-overline);
    font-weight: var(--font-weight-medium);
    letter-spacing: var(--letter-spacing-overline);
    text-transform: uppercase;
    padding-block: var(--space-sm);
    color: var(--color-charcoal);
    transition: color var(--transition-fast) var(--easing-standard);
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    color: var(--color-gold-dark);
  }

  .nav-link[aria-current="page"] {
    color: var(--color-gold-dark);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    background: var(--color-gold);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow) var(--easing-luxe);
  }

  .nav-link:hover::after,
  .nav-link:focus-visible::after,
  .nav-link[aria-current="page"]::after {
    transform: scaleX(1);
  }

  .header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-shrink: 0;
  }
}

/* ===== Selecteur de langue FR/EN (pas d'icone drapeau, cf. header.md) ===== */
.lang-switch {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-size-overline);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-overline);
}

.lang-switch__btn {
  padding: var(--space-xs) var(--space-xs);
  color: var(--color-charcoal);
}

.lang-switch__btn[aria-current="true"] {
  color: var(--color-gold-dark);
  pointer-events: none;
}

.lang-switch__sep {
  color: var(--color-border);
}

/* ===== Burger mobile (< 1024px, cf. header.md §3) ===== */
.burger-btn {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: none;
}

@media (min-width: 1024px) {
  .burger-btn {
    display: none;
  }
}

.burger-btn__bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-black);
  transition: transform var(--transition-fast) var(--easing-standard),
              opacity var(--transition-fast) var(--easing-standard);
}

.site-header--transparent .burger-btn__bar {
  background: var(--color-white);
}

.burger-btn[aria-expanded="true"] .burger-btn__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger-btn[aria-expanded="true"] .burger-btn__bar:nth-child(2) {
  opacity: 0;
}

.burger-btn[aria-expanded="true"] .burger-btn__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(22, 21, 19, 0.45);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base) var(--easing-standard);
}

.mobile-menu-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

/* Tiroir mobile en "ecrin" noir : meme matiere que les sections sombres (lueur or + grain),
   liseret dore sur la tranche - bien plus signature que le panneau cream d'origine. */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 360px);
  background-color: var(--color-black);
  background-image:
    radial-gradient(30rem 20rem at 100% 0%, rgba(176, 141, 87, 0.18), transparent 60%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.045'/%3E%3C/svg%3E");
  border-left: 1px solid rgba(201, 160, 92, 0.35);
  z-index: var(--z-mobile-menu);
  transform: translateX(100%);
  transition: transform var(--transition-base) var(--easing-standard);
  overflow-y: auto;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.mobile-menu .lang-switch__btn {
  color: var(--color-beige);
}

.mobile-menu .lang-switch__btn[aria-current="true"] {
  color: var(--color-gold-light);
}

.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-menu .lang-switch {
  font-size: var(--font-size-body);
}

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
}

.mobile-menu__nav .nav-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  font-size: 1.25rem;
  letter-spacing: normal;
  text-transform: none;
  font-family: var(--font-family-heading);
  color: var(--color-cream);
  border-bottom: 1px solid rgba(201, 160, 92, 0.22);
}

.mobile-menu__nav .nav-link:hover,
.mobile-menu__nav .nav-link:focus-visible,
.mobile-menu__nav .nav-link[aria-current="page"] {
  color: var(--color-gold-light);
}

.mobile-menu__cta {
  margin-top: auto;
}

@media (min-width: 1024px) {
  .mobile-menu-overlay,
  .mobile-menu {
    display: none;
  }
}