/* ============================================================
   VAM Localization – Header & Navigation Styles
   header.css
   ============================================================ */

/* ----------------------------------------------------------
   Top Bar
   ---------------------------------------------------------- */
.top-bar {
  background-color: var(--color-primary);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding-block: var(--space-2);
}

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

.top-bar__info {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  font-size: var(--fs-xs);
  color: rgba(255,255,255,0.7);
}

.top-bar__info a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.top-bar__info a:hover { color: var(--color-accent-light); }

.top-bar__info svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.top-bar__cta {
  padding: 0.3rem 1rem;
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-sm);
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.top-bar__cta:hover {
  background-color: var(--color-accent-light);
}

/* ----------------------------------------------------------
   Main Header
   ---------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(11,44,77,0.12);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-6);
}

/* ----------------------------------------------------------
   Logo
   ---------------------------------------------------------- */
.header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.header__logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
}

/* ----------------------------------------------------------
   Primary Navigation
   ---------------------------------------------------------- */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-left: auto;
}

.primary-nav__item {
  position: relative;
}

.primary-nav__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-dark);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.primary-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-3);
  right: var(--space-3);
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.primary-nav__link:hover,
.primary-nav__link[aria-expanded="true"],
.primary-nav__link.active {
  color: var(--color-primary);
}

.primary-nav__link:hover::after,
.primary-nav__link.active::after {
  transform: scaleX(1);
}

.primary-nav__link--cta {
  background-color: var(--color-accent);
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
  margin-left: var(--space-2);
}

.primary-nav__link--cta::after { display: none; }

.primary-nav__link--cta:hover {
  background-color: var(--color-accent-light);
  color: var(--color-primary);
}

/* Chevron icon */
.nav-chevron {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.primary-nav__link[aria-expanded="true"] .nav-chevron {
  transform: rotate(180deg);
}

/* ----------------------------------------------------------
   Dropdown Menu
   ---------------------------------------------------------- */
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 220px;
  background-color: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  padding: var(--space-2);
  z-index: 100;
}

.primary-nav__item:hover .dropdown,
.primary-nav__item:focus-within .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown__link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-text-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.dropdown__link:hover {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
  padding-left: calc(var(--space-4) + 4px);
}

.dropdown__link svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* ----------------------------------------------------------
   Mega Menu (Services)
   ---------------------------------------------------------- */
.mega-menu {
  position: fixed;
  top: auto;
  left: 0;
  right: 0;
  width: 100%;
  background-color: var(--color-white);
  border-top: 2px solid var(--color-accent);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 20px 40px rgba(11,44,77,0.12);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
  z-index: 999;
  padding-block: var(--space-8);
}

.primary-nav__item--mega:hover .mega-menu,
.primary-nav__item--mega:focus-within .mega-menu {
  opacity: 1;
  visibility: visible;
}

.mega-menu__inner {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-4);
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.mega-menu__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.mega-menu__item:hover {
  background-color: var(--color-bg-light);
}

.mega-menu__item:hover .mega-menu__icon { background-color: var(--color-primary); }
.mega-menu__item:hover .mega-menu__icon svg { color: var(--color-white); }

.mega-menu__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(11,44,77,.07);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  transition: background-color var(--transition-fast);
}

.mega-menu__icon svg {
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  transition: color var(--transition-fast);
}

.mega-menu__text { flex: 1; }

.mega-menu__title {
  display: block;
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

.mega-menu__desc {
  display: block;
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  line-height: 1.4;
}

/* ----------------------------------------------------------
   Mobile Toggle Button
   ---------------------------------------------------------- */
.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  color: var(--color-primary);
  transition: background-color var(--transition-fast);
  margin-left: auto;
}

.mobile-toggle:hover { background-color: var(--color-bg-light); }

.mobile-toggle svg {
  width: 24px;
  height: 24px;
}

/* ----------------------------------------------------------
   Mobile Nav Drawer
   ---------------------------------------------------------- */
.mobile-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 90vw);
  background-color: var(--color-white);
  box-shadow: -4px 0 30px rgba(11,44,77,0.15);
  z-index: 2000;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--transition-slow);
  padding: var(--space-6);
}

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

.mobile-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.mobile-nav__logo img {
  height: 40px;
  width: auto;
}

.mobile-nav__close {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dark);
  transition: background-color var(--transition-fast);
}

.mobile-nav__close:hover { background-color: var(--color-bg-light); }

.mobile-nav__close svg { width: 22px; height: 22px; }

.mobile-nav__list { display: flex; flex-direction: column; gap: var(--space-1); }

.mobile-nav__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  color: var(--color-text-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav__link:hover,
.mobile-nav__link[aria-expanded="true"] {
  background-color: var(--color-bg-light);
  color: var(--color-primary);
}

.mobile-nav__link svg { width: 16px; height: 16px; transition: transform var(--transition-fast); }

.mobile-nav__link[aria-expanded="true"] svg { transform: rotate(180deg); }

.mobile-submenu {
  display: none;
  padding-left: var(--space-4);
  margin-top: var(--space-1);
  border-left: 2px solid var(--color-accent);
  margin-left: var(--space-4);
}

.mobile-submenu.open { display: block; }

.mobile-submenu__link {
  display: block;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.mobile-submenu__link:hover { color: var(--color-primary); }

.mobile-nav__cta-wrap {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.mobile-nav__cta-wrap .btn { justify-content: center; }

/* Mobile Overlay */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0,0,0,0.5);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.mobile-overlay.open {
  opacity: 1;
  visibility: visible;
}

/* ----------------------------------------------------------
   Responsive
   ---------------------------------------------------------- */
@media (max-width: 1024px) {
  .primary-nav { display: none; }
  .mobile-toggle { display: flex; }
  .mega-menu { display: none; }
}

@media (max-width: 480px) {
  .top-bar__info { display: none; }
  .top-bar__inner { justify-content: center; }
  .header__logo img { height: 40px; }
  .header__inner { height: 64px; }
}