/* ==============================================
   COMPONENT: Footer
   Description: Dark footer — brand column + 3 nav columns + legal bar
   ============================================== */

/* --- Block --- */

.footer {
  background: var(--color-text-primary);
  color: var(--color-clinical-white);
  padding-top: var(--space-16);
}

/* --- Top wrapper (brand + columns) --- */

.footer__top {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
}

/* --- Brand column --- */

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

.footer__logo-link {
  display: inline-block;
}

.footer__logo-link img {
  width: 140px;
  height: auto;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
  max-width: 36ch;
}

.footer__legal-name {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.02em;
}

/* --- Nav columns wrapper --- */

.footer__columns {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

/* --- Individual nav column --- */

.footer__column {
  display: flex;
  flex-direction: column;
}

.footer__column-heading {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__link {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-clinical-white);
}

/* --- Legal bar --- */

.footer__bar {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-block: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.4);
}

/* --- Responsive --- */

@media (min-width: 480px) {
  .footer__columns {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .footer__top {
    grid-template-columns: 1fr 2fr;
    gap: var(--space-12);
  }

  .footer__columns {
    grid-template-columns: repeat(3, 1fr);
  }

  .footer__bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .footer__top {
    grid-template-columns: 2fr 3fr;
    gap: var(--space-16);
  }
}