/* ================================================
   FOOTER
   ================================================ */

footer {
  background: var(--azul);
  color: var(--blanco);
  padding: 56px 64px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand .brand {
  font-family: var(--font-titulo);
  font-weight: 900;
  font-size: 22px;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
}

.footer-brand .sub {
  font-size: 9px;
  letter-spacing: 2px;
  color: var(--verde-clr);
  text-transform: uppercase;
  font-weight: 700;
  display: block;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.45);
  line-height: 1.7;
  max-width: 220px;
}

.f-socials {
  display: flex;
  gap: 10px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.f-socials a {
  width: 36px; height: 36px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--blanco);
  transition: background 0.2s, border-color 0.2s;
}

.f-socials a:hover {
  background: var(--verde-osc);
  border-color: var(--verde);
}

.footer-col h4 {
  font-family: var(--font-titulo);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--verde-clr);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  transition: color 0.2s;
}

.footer-col ul li a:hover {
  color: var(--blanco);
}

/* Footer bottom */
.footer-bottom {
  background: #091c3e;
  padding: 16px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.footer-bottom p {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.3);
  letter-spacing: 1px;
}

/* ── WhatsApp FAB ── */
.wa-fab {
  position: fixed;
  bottom: 28px; right: 28px;
  z-index: 500;
  width: 56px; height: 56px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.45);
  cursor: pointer;
  transition: transform 0.2s;
  text-decoration: none;
}

.wa-fab:hover { transform: scale(1.1); }

/* ── Responsive ── */
@media (max-width: 768px) {
  footer {
    grid-template-columns: 1fr 1fr;
    padding: 40px 24px;
    gap: 32px;
  }

  .footer-brand { grid-column: span 2; }

  .footer-bottom {
    padding: 16px 24px;
    flex-direction: column;
    text-align: center;
  }
}