.site-header {
  position: relative;
  z-index: 100;
  background-color: var(--color-obsidian-blue);
  border-bottom: 1px solid var(--color-border-bronze);
  box-shadow: 0 2px 8px var(--color-shadow-tint);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--space-lg);
  min-height: 72px;
}

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

.site-header__logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.site-header__brand-text {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: var(--text-heading-letter-spacing);
  text-transform: uppercase;
  color: var(--color-ancient-bronze);
  white-space: nowrap;
}

.site-header__nav {
  flex: 1;
  min-width: 0;
}

.site-header__nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-header__nav-list li {
  margin: 0;
  padding: 0;
}

.site-header__nav-list a {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: var(--text-heading-letter-spacing);
  text-transform: uppercase;
  color: var(--color-papyrus-ivory);
  text-decoration: none;
  transition: color var(--transition-fast), text-shadow var(--transition-fast);
  white-space: nowrap;
}

.site-header__nav-list a:hover {
  color: var(--color-turquoise-glass);
  text-shadow: 0 0 8px rgba(46, 196, 182, 0.5);
}

.site-header__nav-list a:focus-visible {
  outline: 2px solid var(--color-focus-outline);
  outline-offset: 2px;
  border-radius: var(--radius-small);
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
}

.site-header__cta {
  white-space: nowrap;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--color-border-bronze);
  border-radius: var(--radius-small);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header__toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-papyrus-ivory);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

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

.site-header__toggle[aria-expanded="true"] .site-header__toggle-line:nth-child(2) {
  opacity: 0;
}

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

.site-header__toggle:focus-visible {
  outline: 2px solid var(--color-focus-outline);
  outline-offset: 2px;
  border-radius: var(--radius-small);
}

@media (max-width: 1023px) {
  .site-header__inner {
    flex-wrap: wrap;
    padding-block: var(--space-sm);
  }

  .site-header__brand {
    order: 1;
  }

  .site-header__actions {
    order: 2;
  }

  .site-header__toggle {
    display: flex;
  }

  .site-header__nav {
    order: 3;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }

  .site-header__nav.is-open {
    max-height: 70vh;
    overflow-y: auto;
  }

  .site-header__nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: var(--space-sm);
  }

  .site-header__nav-list li {
    border-bottom: 1px solid var(--color-border-bronze);
  }

  .site-header__nav-list li:last-child {
    border-bottom: none;
  }

  .site-header__nav-list a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    font-size: 1rem;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .site-header__logo {
    width: 40px;
    height: 40px;
  }

  .site-header__brand-text {
    font-size: 1rem;
  }

  .site-header__cta {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.75rem;
  }
}