/* Page-level layout: header, nav, main, footer */

.site-header {
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2) var(--space-3);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.site-header__brand {
  font-weight: 700;
  font-size: 1.25rem;
  text-decoration: none;
  color: var(--color-text);
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.site-nav a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--color-accent);
}

.site-main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-3);
  min-height: 60vh;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.social-links a {
  text-decoration: none;
}

@media (min-width: 640px) {
  .site-footer__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}