.site-footer {
  background-color: var(--color-dark);
  color: var(--color-white);
  padding-top: var(--space-20);
  padding-bottom: var(--space-8);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

/* Brand Column */
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.footer-logo__img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.footer-logo__mark {
  width: 40px;
  height: 40px;
  background-color: var(--color-royal-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-logo__mark span {
  font-family: var(--font-brand);
  font-weight: var(--weight-black);
  font-size: var(--text-lg);
  color: var(--color-white);
}

.footer-logo__wordmark {
  font-family: var(--font-brand);
  font-weight: var(--weight-bold);
  font-size: var(--text-xl);
  color: var(--color-white);
  letter-spacing: -0.02em;
}

.footer-tagline {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: rgba(255,255,255,0.55);
  max-width: 280px;
}

.footer-social {
  display: flex;
  gap: var(--space-3);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-size: var(--text-sm);
  transition:
    background-color var(--transition-base),
    border-color     var(--transition-base),
    color            var(--transition-base);
}

.social-link svg {
  width: 18px;
  height: 18px;
  display: block;
}

.social-link:hover {
  background-color: var(--color-royal-blue);
  border-color: var(--color-royal-blue);
  color: var(--color-white);
}

/* Nav Columns */
.footer-nav h4 {
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: var(--space-6);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-nav a {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--color-white);
}

/* Bottom */
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  gap: var(--space-4);
}

.footer-bottom p {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.35);
  max-width: none;
  margin: 0;
}

.footer-bottom-links {
  display: flex;
  gap: var(--space-6);
}

.footer-bottom-links a {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.35);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
  color: rgba(255,255,255,0.65);
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
  }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}