/* Shared project header. Colors and spacing come from tokens.css. */
.site-header,
.site-header * { box-sizing: border-box; }
.site-header {
  background: var(--color-brand);
  color: var(--color-on-brand);
  border-block-end: var(--highlight-bar);
  font-family: var(--font-sans);
}
.site-header-inner {
  max-width: 92rem;
  margin-inline: auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3) var(--space-8);
  flex-wrap: wrap;
}
.site-brand { display: grid; gap: 0; }
.site-header .site-brand a {
  color: var(--color-on-brand);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-heading);
  text-decoration: none;
}
.site-brand span {
  color: var(--color-on-brand);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
}
.site-nav { display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-6); align-items: center; }
.site-header .site-nav a {
  display: inline-block;
  padding: var(--space-2) 0;
  color: var(--color-on-brand);
  font-size: var(--text-md);
  font-weight: 600;
  line-height: var(--leading-body);
  text-underline-offset: .25em;
}
.site-header .site-nav a[aria-current="page"] { text-decoration-thickness: .2em; }
.site-header a:focus-visible {
  outline: 3px solid var(--color-highlight);
  outline-offset: 3px;
}
@media (max-width: 40rem) {
  .site-header-inner { padding-inline: var(--space-4); }
  .site-nav { width: 100%; column-gap: var(--space-4); }
  .site-header .site-nav a { font-size: var(--text-sm); }
}