/* Responsive breakpoints for mobile/tablet */
@media (max-width: 900px) {
  .container { max-width: 98vw; }
  .footer-main { flex-direction: column; gap: 1em; }
  .main-nav { flex-direction: column; align-items: flex-start; }
  .nav-links { flex-direction: column; gap: 0.5em; }
}
@media (max-width: 600px) {
  .container { padding: 0 8px; }
  .site-header, .site-footer { padding: 0.5em 0; }
  .cta-section { padding: 1.2em 0.5em; }
  .footer-col { min-width: 120px; }
  .whatsapp-float { width: 48px; height: 48px; left: 12px; bottom: 12px; }
  .logo img { width: 110px; height: 36px; }
}