/* Page chrome: header, nav, main container. */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.page-header h1 {
  margin: 0;
}

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  padding-bottom: var(--space-4);
}

.site-header__brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-header__nav {
  display: flex;
  gap: var(--space-5);
}

.site-header__nav a {
  color: var(--color-text);
  text-decoration: none;
}

.site-header__nav a:hover {
  color: var(--color-primary);
}

@media (max-width: 640px) {
  .site-header__inner {
    flex-wrap: wrap;
    gap: var(--space-2);
  }

  .page-header {
    flex-wrap: wrap;
  }
}