/* ═══════════════════════════════════════════════
   footer.css — InfraGo
   Estilos de footer + sticky CTA + divisor
   © 2026 InfraGo SpA / TIC Manager's
═══════════════════════════════════════════════ */

/* ── FOOTER ── */
footer {
  background: #111111;
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand p {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  line-height: 1.7;
  margin-top: 14px;
  max-width: 240px;
}

.footer-col h4 {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-col ul li a:hover { color: #ffffff; }

/* ── FOOTER BOTTOM ── */
.footer-bottom {
  background: #0a0a0a;
  padding: 20px 48px;
  border-top: 1px solid rgba(255,255,255,0.05);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 12px;
  color: rgba(255,255,255,0.35);
}

.footer-socials { display: flex; gap: 16px; }

.footer-socials a {
  color: rgba(255,255,255,0.35);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.2s;
  font-weight: 500;
  letter-spacing: 0.5px;
}

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

/* ── STICKY CTA ── */
.sticky-expert {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 50;
  animation: fadeUp 1s 1s ease both;
}

.sticky-btn {
  background: var(--gold);
  color: #ffffff;
  border: none;
  border-radius: 10px;
  padding: 12px 20px;
  font-family: 'Barlow', sans-serif;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 8px 32px rgba(232,146,10,0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
}

.sticky-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(232,146,10,0.45);
}

.sticky-dot {
  width: 8px; height: 8px;
  background: #ffffff;
  border-radius: 50%;
  animation: pulse 1.5s infinite;
}

/* ── DIVISOR ── */
.divider-line {
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(17,17,17,0.08), transparent);
  margin: 0 48px;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  footer {
    grid-template-columns: 1fr 1fr;
    padding: 36px 20px;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
    text-align: center;
  }

  .footer-socials { flex-wrap: wrap; justify-content: center; }

  .sticky-expert { bottom: 20px; right: 16px; }
}

@media (max-width: 480px) {
  footer { grid-template-columns: 1fr; }
}