/* =========================================================
   HEADER + MENU MOBILE
   ========================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky-header);
  background-color: transparent;
  transition:
    background-color var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

/* État appliqué par navigation.js après la sortie du hero */
.site-header.is-stuck {
  background-color: var(--color-bg);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-height: 64px;
}

.site-header__brand {
  color: var(--color-white);
  font-size: 1.375rem;
  transition: color var(--duration-base) var(--ease-out);
  white-space: nowrap;
}

.site-header.is-stuck .site-header__brand { color: var(--color-ink); }

/* Navigation desktop : masquée sur mobile */
.site-nav { display: none; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: var(--tap-target);
  font-size: var(--text-small);
  font-weight: var(--weight-medium);
  color: var(--color-white);
  position: relative;
  transition: color var(--duration-base) var(--ease-out);
}

.site-header.is-stuck .site-nav__link { color: var(--color-ink); }

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 12px;
  width: 100%;
  height: 1.5px;
  background-color: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-fast) var(--ease-out);
}

.site-nav__link:hover::after { transform: scaleX(1); }

.site-header__cta { display: none; }

/* Bouton hamburger */
.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  margin-right: -0.5rem;
  color: var(--color-white);
  transition: color var(--duration-base) var(--ease-out);
}

.site-header.is-stuck .site-header__toggle { color: var(--color-ink); }

.site-header__toggle-icon { width: 26px; height: 26px; }

@media (min-width: 900px) {
  .site-header__toggle { display: none; }
  .site-nav { display: block; }
  .site-header__cta { display: inline-flex; }
  .site-header__inner { min-height: 76px; }
}

/* ---------------------------------------------------------
   MENU MOBILE PLEIN ÉCRAN
   --------------------------------------------------------- */

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-menu);
  background-color: var(--color-green-deep);
  color: var(--color-white);
  display: flex;
  flex-direction: column;
  padding-top: env(safe-area-inset-top);
  padding-bottom: max(var(--space-lg), env(safe-area-inset-bottom));
  overflow-y: auto;
  opacity: 0;
  transition: opacity var(--duration-base) var(--ease-out);
}

.mobile-menu[hidden] { display: none; }
.mobile-menu.is-open { opacity: 1; }

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  flex-shrink: 0;
}

.mobile-menu__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--tap-target);
  height: var(--tap-target);
  margin-right: -0.5rem;
  color: var(--color-white);
}

.mobile-menu__close-icon { width: 26px; height: 26px; }

.mobile-menu__nav {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  gap: var(--space-xl);
  padding-block: var(--space-xl);
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  min-height: 56px;
  font-family: var(--font-display);
  font-size: 1.75rem;
  line-height: var(--leading-snug);
  border-bottom: 1px solid var(--color-border-light);
}

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