/* ============================================================
   12.10  Shared footer
   ============================================================ */

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

.site-footer__inner {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: var(--space-12);
  align-items: start;
  padding-block: var(--space-12);
}

/* Brand column */
.site-footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.site-footer__wordmark {
  display: inline-block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: -0.02em;
  text-decoration: none;
  line-height: 1;
}

.site-footer__wordmark-auto {
  color: var(--color-text-primary);
}

.site-footer__wordmark-oracle {
  color: var(--color-accent-violet);
}

.site-footer__tagline {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-light);
  color: var(--color-text-muted);
}

/* Page links column */
.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.site-footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.site-footer__link:hover {
  color: var(--color-text-primary);
}

/* External links column */
.site-footer__external {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.site-footer__ext-link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent-violet);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.site-footer__ext-link:hover {
  color: #9580ff;
}

/* Bottom copyright strip */
.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-5);
}

.site-footer__copyright {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* ============================================================
   Mobile (≤ 640px)
   ============================================================ */
@media (max-width: 640px) {
  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    padding-block: var(--space-10);
  }
}