.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--vault-raised);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-raised);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--container-main);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  min-height: 64px;
}

@media (min-width: 768px) {
  .site-header__inner {
    padding-inline: var(--space-2xl);
    min-height: 72px;
  }
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--bone);
  flex-shrink: 0;
}

.site-header__logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--bone);
  white-space: nowrap;
}

@media (max-width: 767px) {
  .site-header__logo {
    width: 32px;
    height: 32px;
  }

  .site-header__brand-text {
    font-size: 12px;
  }
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--bone);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--felt-bright);
  outline-offset: 2px;
}

.site-nav {
  display: flex;
  align-items: center;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item {
  margin: 0;
  padding: 0;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-heading);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--bone-muted);
  text-decoration: none;
  padding-block: var(--space-xs);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.site-nav__link:hover {
  color: var(--bone);
}

.site-nav__link--cta {
  color: var(--bone);
  background-color: var(--felt);
  padding-inline: var(--space-md);
  border-radius: var(--radius-default);
  transition: background-color var(--transition-fast);
}

.site-nav__link--cta:hover {
  background-color: var(--felt-bright);
  color: var(--bone);
}

@media (max-width: 991px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    background-color: var(--vault-raised);
    padding: var(--space-md) var(--space-lg) var(--space-lg);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    visibility: hidden;
    z-index: 999;
  }

  .site-nav.is-open {
    transform: translateX(0);
    visibility: visible;
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    gap: 0;
  }

  .site-nav__link {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    box-sizing: border-box;
    padding: var(--space-md) 0;
    font-size: 14px;
    border-bottom: 1px solid var(--line-50);
  }

  .site-nav__link--cta {
    justify-content: center;
    border-bottom: none;
    margin-top: var(--space-md);
    padding-inline: var(--space-md);
  }
}

@media (min-width: 768px) and (max-width: 991px) {
  .site-nav {
    top: 72px;
  }
}

@media (min-width: 992px) {
  .site-nav {
    position: static;
    transform: none;
    visibility: visible;
    overflow: visible;
    padding: 0;
    background: transparent;
  }

  .site-nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-lg);
  }

  .site-nav__link {
    padding: var(--space-xs) 0;
    border-bottom: none;
  }

  .site-nav__link--cta {
    padding-inline: var(--space-md);
  }
}