/* ============================================
   SOL+ — Footer
   ============================================ */

.site-footer {
  background-color: var(--color-teal-900);
  color: rgba(255,255,255,0.85);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-3xl);
}

/* Column 1 — Brand */
.footer-brand__logo {
  font-family: var(--font-heading-en);
  font-size: 28px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.04em;
  display: inline-block;
  margin-bottom: var(--space-sm);
}

.footer-brand__logo span {
  color: var(--color-coral);
}

.footer-brand__tagline {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
  font-family: var(--font-ui);
}

.footer-brand__address {
  font-size: 13px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}

/* Columns 2–4 */
.footer-col__title {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.45);
  margin-bottom: var(--space-md);
}

.footer-col__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
}

.footer-col__list a {
  font-size: 14px;
  color: rgba(255,255,255,0.72);
  text-decoration: none;
  transition: color var(--transition-fast);
  letter-spacing: 0.02em;
}

.footer-col__list a:hover {
  color: var(--color-teal-300);
}

/* SNS */
.footer-sns {
  display: flex;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.footer-sns__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.65);
  text-decoration: none;
  font-size: 14px;
  transition: border-color var(--transition-fast), color var(--transition-fast), background-color var(--transition-fast);
}

.footer-sns__link:hover {
  border-color: var(--color-teal-300);
  color: var(--color-teal-300);
  background-color: rgba(124,197,192,0.1);
}

/* Bottom bar */
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-copyright {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  font-family: var(--font-ui);
  letter-spacing: 0.04em;
}

.footer-legal {
  display: flex;
  gap: var(--space-md);
  list-style: none;
}

.footer-legal a {
  font-size: 12px;
  color: rgba(255,255,255,0.4);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-family: var(--font-ui);
}

.footer-legal a:hover {
  color: rgba(255,255,255,0.7);
}

/* ── Responsive ── */
@media (max-width: 1023px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

@media (max-width: 767px) {
  .site-footer {
    padding: var(--space-3xl) 0 var(--space-xl);
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
}