.site-header {
  box-shadow: var(--shadow-xs);
  margin: 0;
  padding: 0;
  padding-top: env(safe-area-inset-top, 0);
}

.site-header-inner {
  padding-block: var(--space-2);
}

.header-shell {
  align-items: center;
}

.site-brand {
  line-height: 1;
}

.site-brand a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-serif);
  text-decoration: none;
  line-height: 1;
  padding-block: 0.1rem;
}

.header-nav {
  margin-left: auto;
}

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

.header-nav-item a {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.header-nav-cta a {
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .site-header-inner {
    position: relative;
    padding-block: var(--space-2);
  }

  .site-brand {
    font-size: var(--font-size-lg);
    letter-spacing: 0.14em;
  }

  .header-nav {
    position: absolute;
    inset-inline: 0;
    top: 100%;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
  }

  .header-nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-3) var(--space-4) var(--space-5);
  }

  .header-nav-item a {
    padding-block: 0.35rem;
  }

  .header-nav--open {
    display: block !important;
  }
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(5px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-5px) rotate(-45deg);
}

.nav-toggle-bar {
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.header-nav a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}