.site-header {
  padding: var(--space-6) 0;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  transition: all var(--transition-base);
}

.site-header.scrolled {
  padding: var(--space-3) 0;
  background-color: var(--color-dark);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-logo img {
  height: 2.53rem;
  width: auto;
  display: block;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Main Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.main-nav .menu {
  display: flex;
  gap: var(--space-4);
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav .menu > li {
  position: relative;
}

.main-nav .menu a {
  color: var(--color-light);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  font-size: var(--text-base);
  text-decoration: none;
  transition: color var(--transition-base);
  padding: var(--space-2) 0;
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.main-nav .menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.main-nav .menu a:hover::after,
.main-nav .current-menu-item > a::after,
.main-nav .current_page_item > a::after {
  width: 100%;
}

/* Chevron Icon */
.menu-chevron {
  font-size: 1.25rem;
  transition: transform var(--transition-base);
  margin-left: -0.25rem;
}

.has-dropdown:hover > a .menu-chevron,
.has-dropdown.is-open > a .menu-chevron {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background-color: var(--color-dark);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  list-style: none;
  margin: 0;
  padding: var(--space-4) var(--space-6);
  min-width: 220px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: var(--z-dropdown);
}

.has-dropdown:hover > .dropdown-menu,
.has-dropdown.is-open > .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-sm);
  text-transform: uppercase;
  color: var(--color-light);
  transition: all var(--transition-base);
  position: relative;
}

.dropdown-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

.dropdown-menu a:hover::after {
  width: 100%;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-light);
  cursor: pointer;
  padding: var(--space-2);
  z-index: calc(var(--z-modal) + 2);
  position: relative;
}

.menu-toggle .material-symbols-outlined {
  font-size: var(--text-3xl);
}

.mobile-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: calc(var(--z-modal) + 1);
  opacity: 0;
  transition: opacity var(--transition-slow);
}

.mobile-overlay.is-open {
  display: block;
  opacity: 1;
}

.mobile-menu-close {
  display: none;
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  color: var(--color-light);
  cursor: pointer;
  padding: var(--space-2);
  line-height: 1;
}

.mobile-menu-close .material-symbols-outlined {
  font-size: var(--text-3xl);
}

@media (max-width: 1024px) {
  .menu-toggle {
    display: block;
  }

  .mobile-menu-close {
    display: block;
  }

  .header-nav {
    position: fixed;
    top: 0;
    right: -80vw;
    width: 80vw;
    height: 100vh;
    background-color: var(--color-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-20) var(--space-8);
    gap: var(--space-6);
    transition: right var(--transition-slow);
    z-index: calc(var(--z-modal) + 2);
    overflow-y: auto;
  }

  .header-nav.is-open {
    right: 0;
  }

  .main-nav {
    width: 100%;
  }

  .main-nav .menu {
    flex-direction: column;
    gap: var(--space-6);
    width: 100%;
  }

  .main-nav .menu > li {
    width: 100%;
  }

  .main-nav .menu a {
    font-size: var(--text-xl);
    padding: var(--space-4) 0;
    width: 100%;
    justify-content: space-between;
  }

  /* Mobile: No dropdowns or chevrons */
  /* Hide chevron icons on mobile */
  .menu-chevron {
    display: none;
  }

  /* Hide all submenus on mobile - only show parent items */
  .dropdown-menu {
    display: none;
  }

  .header-nav .btn {
    width: 100%;
    justify-content: center;
  }
}