.site-header {
  position: relative;
  z-index: 1000;
  background-color: var(--color-navy-900);
  border-bottom: 1px solid var(--color-brass-500);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: 72px;
  padding-block: var(--space-sm);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  flex-shrink: 0;
  min-width: 0;
}

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

.brand-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-cream-50);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--color-brass-500);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.nav-toggle:hover {
  border-color: var(--color-brass-300);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--color-brass-500);
  outline-offset: 2px;
}

.nav-toggle-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-cream-50);
  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);
}

.site-nav {
  display: block;
}

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

.nav-list li {
  margin: 0;
  padding: 0;
}

.nav-list a {
  display: inline-block;
  padding-block: var(--space-sm);
  font-size: var(--text-small-size);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-cream-50);
  transition: color var(--transition-fast);
  white-space: nowrap;
}

.nav-list a:hover {
  color: var(--color-brass-300);
}

.nav-list a:focus-visible {
  outline: 2px solid var(--color-brass-500);
  outline-offset: 2px;
}

@media (max-width: 900px) {
  .header-inner {
    min-height: 64px;
  }

  .brand-mark {
    width: 40px;
    height: 40px;
  }

  .brand-text {
    font-size: 1.25rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-navy-900);
    border-bottom: 1px solid var(--color-brass-500);
    max-height: calc(100vh - 100%);
    overflow-y: auto;
    display: none;
  }

  .site-nav.is-open {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-md);
  }

  .nav-list li {
    border-bottom: 1px solid rgba(176, 141, 87, 0.2);
  }

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

  .nav-list a {
    display: block;
    padding: var(--space-md);
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .brand-text {
    display: none;
  }
}