/* IMANA - Header & Navigation*/

/*  HEADER  */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background: transparent;
  transition: background var(--transition-slow), box-shadow var(--transition-slow),
              padding var(--transition-slow);
  padding-block: var(--space-5);
}

@media (min-width: 768px) {
  .site-header:not(.scrolled) .logo-mark {
    filter: brightness(0) invert(1) drop-shadow(0 0 1px rgba(255,255,255,0.5));
    opacity: 1;
  }

  .site-header.scrolled .logo-mark {
    filter: none;
    opacity: 1;
  }
}

.site-header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--border), 0 4px 16px rgba(16,42,67,0.06);
  padding-block: var(--space-3);
}
.site-header.header-dark:not(.scrolled) {
  /* Sur hero sombre */
  --header-text: var(--white);
}
.site-header.header-dark.scrolled {
  --header-text: var(--text-primary);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

/*  LOGO  */
.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}

.logo-mark {
  display: block;
  width: auto;
  height: 48px;
  max-width: 180px;
  object-fit: contain;
  flex-shrink: 0;
}
@media (max-width: 767px) {
  .logo-mark {
    height: 40px;
    max-width: 150px;
  }
}
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.logo-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--fw-extrabold);
  color: var(--header-text, var(--blue-main));
  letter-spacing: -0.02em;
  transition: color var(--transition-slow);
}
.logo-tagline {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  color: var(--gold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/*  NAV DESKTOP  */
.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--space-1);
}
@media (min-width: 1024px) { .nav-desktop { display: flex; } }

.nav-item {
  position: relative;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--fw-semibold);
  color: var(--header-text, var(--text-primary));
  text-decoration: none;
  transition: color var(--transition-base), background var(--transition-base);
  white-space: nowrap;
}
.nav-link:hover { color: var(--gold); background: rgba(197,154,74,0.07); }
.nav-link.active { color: var(--gold); }
.nav-link svg { width: 14px; height: 14px; transition: transform var(--transition-base); }
.nav-item:hover .nav-link svg { transform: rotate(180deg); }
.nav-link:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

/* Dropdown */
.nav-dropdown {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  min-width: 220px;
  background: var(--white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-2);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity var(--transition-base), transform var(--transition-base),
              visibility var(--transition-base);
  transform: translateX(-50%) translateY(-8px);
  z-index: var(--z-dropdown);
}
.nav-item:hover .nav-dropdown,
.nav-item:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.nav-dropdown-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-dropdown-link:hover { background: var(--blue-light); color: var(--blue-main); }
.nav-dropdown-link svg { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; }
.nav-dropdown-divider { height: 1px; background: var(--border-light); margin: var(--space-2) 0; }
.nav-dropdown-flag {
  display: block;
  width: 32px;
  height: 22px;
  flex-shrink: 0;
  object-fit: cover;
  border-radius: 3px;
  box-shadow: 0 0 0 1px rgba(16, 42, 67, 0.14);
}

.nav-dropdown-icon {
  display: block;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--blue-main);
  stroke-width: 1.8;
}

/*  HEADER ACTIONS  */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* CTA Header */
.header-cta {
  display: none;
}
@media (min-width: 1024px) { .header-cta { display: inline-flex; } }

/*  MENU HAMBURGER  */
.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
  color: var(--header-text, var(--text-primary));
}
.menu-toggle:hover { background: rgba(197,154,74,0.1); }
.menu-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }
.site-header.scrolled .menu-toggle { color: var(--text-primary); }

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

.hamburger-icon, .close-icon { width: 22px; height: 22px; }
.menu-toggle .close-icon { display: none; }
.menu-toggle[aria-expanded="true"] .hamburger-icon { display: none; }
.menu-toggle[aria-expanded="true"] .close-icon { display: block; }

/*  MENU MOBILE  */
.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: var(--z-overlay);
  display: flex;
  flex-direction: column;
  background: var(--white);
  transform: translateX(100%);
  transition: transform 280ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.nav-mobile.open { transform: translateX(0); }

.mobile-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--container-px);
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}
.mobile-close {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: none; background: var(--bg-subtle);
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-primary);
}
.mobile-close:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.mobile-nav-body {
  flex: 1;
  padding: var(--space-4) var(--container-px);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-3);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  text-decoration: none;
  transition: background var(--transition-base), color var(--transition-base);
}
.mobile-nav-link:hover { background: var(--blue-light); color: var(--blue-main); }
.mobile-nav-link:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.mobile-submenu-toggle {
  background: none; border: none; cursor: pointer;
  padding: var(--space-4) var(--space-3);
  width: 100%;
  display: flex; align-items: center; justify-content: space-between;
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semibold);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  transition: background var(--transition-base);
}
.mobile-submenu-toggle:hover { background: var(--bg-subtle); }
.mobile-submenu-toggle svg { width: 16px; height: 16px; transition: transform var(--transition-base); }
.mobile-submenu-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.mobile-submenu-toggle:focus-visible { outline: 2px solid var(--gold); outline-offset: 2px; }

.mobile-submenu {
  display: none;
  padding-left: var(--space-4);
  margin-bottom: var(--space-2);
}
.mobile-submenu.open { display: block; }
.mobile-submenu-link {
  display: flex; align-items: center; gap: var(--space-3);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--text-secondary);
  text-decoration: none;
  transition: background var(--transition-base), color var(--transition-base);
}
.mobile-submenu-link:hover { background: var(--blue-light); color: var(--blue-main); }
.mobile-submenu-link svg { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; }

.mobile-nav-divider { height: 1px; background: var(--border-light); margin: var(--space-3) 0; }

.mobile-contact-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5) var(--container-px);
  background: var(--bg-subtle);
  border-top: 1px solid var(--border-light);
}
.mobile-contact-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
}
.mobile-contact-item svg { width: 18px; height: 18px; color: var(--gold); flex-shrink: 0; }

/* Overlay sombre derrière le menu mobile */
.nav-overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-overlay) - 1);
  background: rgba(8,27,44,0.4);
  backdrop-filter: blur(2px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-slow);
}
.nav-overlay.visible { opacity: 1; pointer-events: auto; }