/* ============================================================
   footer.css — Footer con logo, links y copyright
   ============================================================ */

.footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border);
  padding-block: var(--space-16) var(--space-8);
}

/* ── Layout principal del footer ── */
.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

/* ── Columna de marca ── */
.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer__logo {
  height: 40px;
  width: auto;
  transition: filter var(--transition-base);
}

.footer__logo:hover {
  filter: drop-shadow(0 0 8px rgba(77, 200, 232, 0.5));
}

.footer__tagline {
  font-size: var(--fs-base);
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 280px;
}

/* Iconos de redes sociales */
.footer__social {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

.footer__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  transition:
    color         var(--transition-base),
    background    var(--transition-base),
    border-color  var(--transition-base),
    box-shadow    var(--transition-base),
    transform     var(--transition-base);
}

.footer__social a:hover {
  color: var(--cyan);
  background: rgba(77, 200, 232, 0.08);
  border-color: rgba(77, 200, 232, 0.30);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}

/* ── Columnas de links ── */
.footer__links h4 {
  font-family: var(--font-display);
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
}

.footer__links ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__links li a {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-base);
  display: inline-block;
}

.footer__links li a:hover {
  color: var(--cyan-light);
  padding-left: var(--space-2);
}

/* ── Barra inferior ── */
.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
}

.footer__bottom p {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
  .footer__inner {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer__inner {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}