/* ============================================
   IZ Group - Navigation Styles
   Single-row header with centered navigation
   ============================================ */

/* ============================================
   HEADER CONTAINER
   ============================================ */

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-index-sticky);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
  visibility: visible !important; /* Ensure header is always visible */
  opacity: 1 !important; /* Ensure header is never transparent (opacity) */
}

/* Transparent state (over hero) */
.header-transparent {
  background-color: transparent;
}

/* Scrolled state (solid background) */
.header-scrolled {
  background-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

/* ============================================
   MAIN NAVIGATION (SINGLE ROW)
   ============================================ */

.main-nav {
  padding: var(--space-6) 0;
  transition: padding var(--transition-base);
}

.header-scrolled .main-nav {
  padding: var(--space-4) 0;
}

.main-nav-container {
  max-width: var(--container-7xl);
  margin: 0 auto;
  padding: 0 var(--space-4);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 1024px) {
  .main-nav-container {
    padding: 0 var(--space-8);
  }
}

@media (max-width: 1023px) {
  .main-nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
  }
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  z-index: 2;
  flex-shrink: 0;
}

@media (max-width: 1023px) {
  .logo {
    flex: 0 0 auto;
  }
}

.logo-img {
  height: 60px;
  width: auto;
  transition: height var(--transition-base), filter var(--transition-base);
  filter: brightness(0) invert(1);
  opacity: 0.98;
}

.header-scrolled .logo-img {
  height: 50px;
}

/* Dark logo for first slide (white background) */
.header-dark .logo-img {
  filter: brightness(0) invert(0);
}

/* Main Nav Links */
.main-nav-links {
  display: none;
  gap: var(--space-6);
  align-items: center;
  justify-content: center;
}

@media (min-width: 1024px) {
  .main-nav-links {
    display: flex;
  }
}

.main-nav-link {
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  position: relative;
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.main-nav-link:hover {
  color: var(--color-gold);
}

/* Dark main nav links for first slide */
.header-dark .main-nav-link {
  color: var(--color-primary);
}

.header-dark .main-nav-link:hover {
  color: var(--color-gold);
}

.main-nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 100%;
  height: 2px;
  background-color: var(--color-gold);
  transition: transform var(--transition-base);
}

.main-nav-link:hover::before {
  transform: translateX(-50%) scaleX(1);
}

.main-nav-link.active::before {
  transform: translateX(-50%) scaleX(1);
}

/* Language Switcher Dropdown */
.language-switcher {
  position: relative;
}

/* Desktop language switcher - hidden on mobile */
.language-switcher-desktop {
  display: none;
}

@media (min-width: 1024px) {
  .language-switcher-desktop {
    display: block;
  }
}

/* Mobile language switcher - shown on mobile, hidden on desktop */
.language-switcher-mobile {
  display: block;
}

@media (min-width: 1024px) {
  .language-switcher-mobile {
    display: none;
  }
}

.lang-dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--border-radius);
  padding: var(--space-2) var(--space-4);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-dropdown-toggle:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.header-dark .lang-dropdown-toggle {
  border-color: rgba(26, 58, 92, 0.3);
  color: var(--color-primary);
}

.header-dark .lang-dropdown-toggle:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

.lang-current {
  display: block;
}

.lang-dropdown-arrow {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.lang-dropdown-toggle[aria-expanded="true"] .lang-dropdown-arrow {
  transform: rotate(180deg);
}

.lang-dropdown-menu {
  position: absolute;
  top: calc(100% + var(--space-2));
  right: 0;
  min-width: 140px;
  background-color: var(--color-white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-fast);
  z-index: var(--z-index-dropdown);
  overflow: hidden;
}

.lang-dropdown-menu[aria-hidden="false"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-dropdown-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
  border-bottom: 1px solid rgba(26, 58, 92, 0.1);
}

.lang-dropdown-item:last-child {
  border-bottom: none;
}

.lang-dropdown-item:hover {
  background-color: rgba(26, 58, 92, 0.05);
  color: var(--color-gold);
}

.lang-dropdown-item.active {
  background-color: rgba(201, 169, 97, 0.1);
  color: var(--color-gold);
  font-weight: var(--font-weight-semibold);
}

/* Mobile Controls Container */
.mobile-controls {
  display: none;
}

@media (max-width: 1023px) {
  .mobile-controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
  }
}

/* Mobile Language Switcher - Compact Design */
.language-switcher-mobile .lang-dropdown-toggle {
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  min-width: 50px;
}

.language-switcher-mobile .lang-dropdown-arrow {
  width: 14px;
  height: 14px;
}

.language-switcher-mobile .lang-dropdown-menu {
  min-width: 120px;
}

.language-switcher-mobile .lang-dropdown-item {
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-xs);
}

/* ============================================
   MOBILE MENU TOGGLE
   ============================================ */

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 28px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 2;
  transition: transform var(--transition-base);
}

@media (max-width: 1023px) {
  .mobile-menu-toggle {
    display: flex;
  }
}

.mobile-menu-toggle:hover {
  transform: scale(1.1);
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

/* Dark hamburger for white theme slides */
.header-dark .hamburger-line {
  background-color: var(--color-primary);
}

/* Hamburger animation when menu is open */
.mobile-menu-toggle.active .hamburger-line:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-menu-toggle.active .hamburger-line:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ============================================
   MOBILE MENU
   ============================================ */

.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 85%;
  max-width: 400px;
  height: 100vh;
  background-color: var(--color-primary);
  box-shadow: var(--shadow-2xl);
  padding: var(--space-20) var(--space-6) var(--space-8);
  overflow-y: auto;
  transition: right var(--transition-slow);
  z-index: var(--z-index-fixed);
}

.mobile-menu.active {
  right: 0;
}

/* Mobile Menu Close Button */
.mobile-menu-close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-white);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--border-radius);
  z-index: 2;
}

.mobile-menu-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-gold);
  transform: rotate(90deg);
}

.mobile-menu-close svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: calc(var(--z-index-fixed) - 1);
}

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

/* Mobile Menu Navigation */
.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mobile-menu-link {
  display: block;
  color: var(--color-white);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  padding: var(--space-4) 0;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-fast);
}

.mobile-menu-link:hover {
  color: var(--color-gold);
  padding-left: var(--space-2);
}

.mobile-menu-link.active {
  color: var(--color-gold);
}

/* ============================================
   SEARCH MODAL (Optional - for future)
   ============================================ */

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(26, 58, 92, 0.98);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  z-index: var(--z-index-modal);
}

.search-modal.active {
  opacity: 1;
  visibility: visible;
}

.search-modal-content {
  width: 90%;
  max-width: 600px;
}

.search-input {
  width: 100%;
  padding: var(--space-6);
  font-size: var(--font-size-3xl);
  font-family: var(--font-heading);
  background-color: transparent;
  border: none;
  border-bottom: 2px solid var(--color-gold);
  color: var(--color-white);
  outline: none;
}

.search-input::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.search-close {
  position: absolute;
  top: var(--space-8);
  right: var(--space-8);
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  color: var(--color-white);
  font-size: var(--font-size-3xl);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.search-close:hover {
  color: var(--color-gold);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

/* Tablet */
@media (min-width: 768px) and (max-width: 1023px) {
  .main-nav-container {
    padding: 0 var(--space-6);
  }
}

/* Desktop - larger gaps */
@media (min-width: 1280px) {
  .main-nav-links {
    gap: var(--space-8);
  }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */

/* Focus visible styles for keyboard navigation */
.main-nav-link:focus-visible,
.lang-dropdown-toggle:focus-visible,
.lang-dropdown-item:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
  border-radius: var(--border-radius-sm);
}

.mobile-menu-toggle:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
  border-radius: var(--border-radius-sm);
}

.mobile-menu-close:focus-visible {
  outline: 2px solid var(--color-gold);
  outline-offset: 4px;
  border-radius: var(--border-radius-sm);
}

/* Skip to main content link for accessibility */
.skip-to-main {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background-color: var(--color-gold);
  color: var(--color-primary);
  padding: var(--space-3) var(--space-6);
  text-decoration: none;
  font-weight: var(--font-weight-semibold);
  border-radius: var(--border-radius);
  z-index: calc(var(--z-index-modal) + 1);
  transition: top var(--transition-fast);
}

.skip-to-main:focus {
  top: var(--space-4);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Apply animations when menu opens */
.mobile-menu.active {
  animation: slideInRight var(--transition-slow) ease-out;
}

.mobile-menu-overlay.active {
  animation: fadeIn var(--transition-base) ease-out;
}