.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  transition:
    background-color var(--transition),
    box-shadow var(--transition),
    height var(--transition);
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg,
      transparent,
      rgba(255, 255, 255, 0.2) 20%,
      rgba(255, 255, 255, 0.2) 80%,
      transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.site-header--transparent {
  background-color: transparent;
}

.site-header--solid {
  background-color: rgba(10, 17, 40, 0.96);
  backdrop-filter: blur(12px);
  height: var(--header-height-scrolled);
  box-shadow: var(--shadow-header);
}

.site-header--solid::after {
  opacity: 1;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

.site-header__logo {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  transition: opacity var(--transition-fast);
}

.site-header__logo:hover {
  opacity: 0.9;
}

.site-header__logo-img {
  height: 72px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
  transition: height var(--transition-fast);
}

.site-header--solid .site-header__logo-img {
  height: 72px;
}

.site-header__logo-name {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
}

.site-header__logo-tag {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--gold-light);
  margin-top: 4px;
}

.site-header__nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  min-width: 0;
  overflow: visible;
  margin-inline: 12px;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
  white-space: nowrap;
}

.site-header__nav-item {
  position: relative;
  flex-shrink: 0;
}

.site-header__nav-item.is-overflow {
  display: none !important;
}

.mobile-menu__list>li.is-hidden {
  display: none !important;
}

.site-header__nav-link {
  display: block;
  padding: 10px 14px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.88);
  transition: color var(--transition-fast);
}

.site-header__nav-link:hover,
.site-header__nav-link--active {
  color: var(--gold-light);
}

.site-header__nav-item--has-dropdown>.site-header__nav-link {
  padding-right: 22px;
}

.site-header__nav-item--has-dropdown>.site-header__nav-link::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 8px;
  width: 4px;
  height: 4px;
  border-right: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: translateY(-65%) rotate(45deg);
  opacity: 0.7;
}

.site-header__dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  min-width: 220px;
  padding: 12px 0;
  background: var(--charcoal-soft);
  border: 1px solid var(--border-dark);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translate(-50%, 8px);
  transition:
    opacity var(--transition-fast),
    transform var(--transition-fast),
    visibility var(--transition-fast);
  pointer-events: none;
  z-index: 1000;
}

.site-header__nav-item--has-dropdown:hover .site-header__dropdown,
.site-header__nav-item--has-dropdown:focus-within .site-header__dropdown {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
  pointer-events: auto;
}

.site-header__dropdown-link {
  display: block;
  padding: 10px 24px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--text-on-dark-muted);
  transition:
    color var(--transition-fast),
    background-color var(--transition-fast);
}

.site-header__dropdown-link:hover {
  color: var(--white);
  background-color: rgba(255, 255, 255, 0.04);
}

.site-header__actions {
  display: none;
  align-items: center;
  gap: 16px;
}

.site-header__menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: border-color var(--transition-fast);
}

.site-header__menu-toggle:hover {
  border-color: var(--gold-light);
}

.site-header__menu-bar {
  display: block;
  width: 100%;
  height: 1px;
  background: var(--white);
  transition:
    transform var(--transition-fast),
    opacity var(--transition-fast);
}

.site-header--menu-open .site-header__menu-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header--menu-open .site-header__menu-bar:nth-child(2) {
  opacity: 0;
}

.site-header--menu-open .site-header__menu-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Desktop Hamburger Menu Dropdown Wrapper & Dropdown List */
.site-header__menu-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

@media (min-width: 577px) {
  .mobile-menu {
    display: none !important;
  }

  .site-header__overflow-dropdown {
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    left: auto;
    min-width: 240px;
    max-width: 320px;
    max-height: calc(85vh - var(--header-height));
    overflow-y: auto;
    background: var(--charcoal-soft);
    border: 1px solid var(--border-dark);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition:
      opacity var(--transition-fast),
      transform var(--transition-fast),
      visibility var(--transition-fast);
    pointer-events: none;
    z-index: 1000;
    padding: 10px 0;
    margin: 0;
    list-style: none;
    border-radius: 4px;
  }

  .site-header__overflow-dropdown::before {
    content: "";
    position: absolute;
    top: -5px;
    right: 16px;
    width: 8px;
    height: 8px;
    background: var(--charcoal-soft);
    border-left: 1px solid var(--border-dark);
    border-top: 1px solid var(--border-dark);
    transform: rotate(45deg);
  }

  .site-header__menu-wrapper:hover .site-header__overflow-dropdown,
  .site-header__menu-wrapper:focus-within .site-header__overflow-dropdown,
  .site-header__menu-wrapper.is-open .site-header__overflow-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-header__overflow-dropdown .site-header__dropdown-link {
    display: block;
    padding: 10px 24px;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-on-dark-muted);
    text-decoration: none;
    transition:
      color var(--transition-fast),
      background-color var(--transition-fast);
  }

  .site-header__overflow-dropdown .site-header__dropdown-link:hover {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.06);
  }

  .site-header__overflow-dropdown .site-header__dropdown-group-title {
    padding: 12px 24px 4px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gold-light);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    margin-top: 6px;
  }

  .site-header__overflow-dropdown>li:first-child .site-header__dropdown-group-title {
    border-top: none;
    margin-top: 0;
    padding-top: 4px;
  }

  .site-header__overflow-dropdown .site-header__dropdown-sublink {
    display: block;
    padding: 8px 24px 8px 36px;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.06em;
    color: rgba(255, 255, 255, 0.75);
    text-decoration: none;
    transition:
      color var(--transition-fast),
      background-color var(--transition-fast);
  }

  .site-header__overflow-dropdown .site-header__dropdown-sublink:hover {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.06);
  }
}


.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: var(--z-mobile-menu);
  visibility: hidden;
  pointer-events: none;
}

.mobile-menu--open {
  visibility: visible;
  pointer-events: auto;
}

.mobile-menu__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(10, 17, 40, 0.7);
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-menu--open .mobile-menu__backdrop {
  opacity: 1;
}

.mobile-menu__panel {
  position: absolute;
  top: 0;
  right: 0;
  width: min(100%, 400px);
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--charcoal);
  transform: translateX(100%);
  transition: transform var(--transition);
  overflow-y: auto;
}

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

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-dark);
}

.mobile-menu__close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-dark);
  color: var(--white);
  font-size: 24px;
  line-height: 1;
  transition: border-color var(--transition-fast);
}

.mobile-menu__close:hover {
  border-color: var(--gold);
}

.mobile-menu__nav {
  flex: 1;
  padding: 24px 28px 40px;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu__link {
  display: block;
  padding: 14px 0;
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--white);
  border-bottom: 1px solid var(--border-dark);
  transition: color var(--transition-fast);
}

.mobile-menu__link:hover {
  color: var(--gold-light);
}

.mobile-menu__link-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-dark);
}

.mobile-menu__link-group .mobile-menu__link {
  border-bottom: none;
  flex: 1;
}

.mobile-menu__sub-toggle {
  background: transparent;
  border: none;
  color: var(--gold-light);
  font-size: 20px;
  padding: 12px 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.mobile-menu__item--has-sub.is-open .mobile-menu__sub-toggle {
  transform: rotate(180deg);
}

.mobile-menu__sublist {
  padding: 8px 0 16px 16px;
  display: none;
}

.mobile-menu__item--has-sub.is-open .mobile-menu__sublist {
  display: block;
}

.mobile-menu__sublink {
  display: block;
  padding: 8px 0;
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

.mobile-menu__sublink:hover {
  color: var(--gold-light);
}

.mobile-menu__footer {
  padding: 28px;
  border-top: 1px solid var(--border-dark);
}

.mobile-menu__footer .btn {
  width: 100%;
}

body.mobile-menu-active {
  overflow: hidden;
}

.site-header__actions {
  display: flex !important;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

@media (min-width: 1200px) {
  .site-header__nav-link {
    padding: 10px 14px;
  }
}

/* Mobile Screen Optimizations (< 576px and < 425px) */
@media (max-width: 576px) {
  .site-header__nav {
    display: none !important;
  }

  .site-header__actions #header-book-btn,
  .site-header__actions .btn {
    display: none !important;
  }

  .site-header__inner {
    padding-inline: 16px;
    gap: 8px;
    justify-content: space-between;
  }

  .site-header__logo-img {
    height: 72px;
    max-width: 160px;
  }

  .site-header__logo-name {
    font-size: 1.25rem;
    letter-spacing: 0.08em;
  }

  .site-header__logo-tag {
    font-size: 8px;
    letter-spacing: 0.22em;
  }
}

@media (max-width: 425px) {
  .mobile-menu {
    z-index: 9999;
  }

  .mobile-menu__panel {
    width: 100%;
    max-width: 100%;
  }

  .mobile-menu__header {
    padding: 16px 20px;
  }

  .mobile-menu__nav {
    padding: 16px 20px 32px;
  }

  .mobile-menu__link {
    font-size: 1.15rem;
    padding: 12px 0;
  }

  .mobile-menu__sub-toggle {
    padding: 10px;
    font-size: 18px;
  }

  .mobile-menu__sublist {
    padding: 4px 0 12px 12px;
  }

  .mobile-menu__sublink {
    font-size: 11px;
    padding: 6px 0;
  }
}