/* =====================================================
   ARKANHUB · responsive.css
   Breakpoints: 4K, desktop, laptop, tablet, móvil
   ===================================================== */

/* ---------- Pantallas grandes / 4K ---------- */
@media (min-width: 1800px) {
  :root { --maxw: 1440px; }
  body { font-size: 18px; }
}

/* ---------- Laptop ---------- */
@media (max-width: 1180px) {
  .hero__inner { gap: 40px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .card--feature { grid-row: span 1; }
  .timeline { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .timeline::before { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

/* ---------- Tablet ---------- */
@media (max-width: 980px) {
  .section { padding: 88px 0; }
  .hero { padding-top: calc(var(--nav-h) + 32px); }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; }
  .float-card--a { left: 10px; }
  .float-card--b { right: 10px; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .proof { grid-template-columns: 1fr; padding: 30px; }

  /* Navegación móvil */
  .nav__burger { display: block; }
  .nav__menu {
    position: fixed; inset: var(--nav-h) 0 auto 0;
    flex-direction: column; align-items: stretch; gap: 8px;
    padding: 22px var(--gutter) 30px;
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--gray-2);
    box-shadow: 0 20px 40px rgba(17, 24, 39, .08);
    transform: translateY(-14px);
    opacity: 0; visibility: hidden;
    transition: opacity .25s, transform .25s, visibility .25s;
  }
  .nav__menu.is-open { opacity: 1; visibility: visible; transform: none; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 4px; font-size: 1.05rem; }
  .nav__list a { display: block; padding: 12px 4px; border-bottom: 1px solid var(--gray-2); }
  .nav__list a::after { display: none; }
  .nav__cta { margin-top: 12px; justify-content: center; }
}

/* ---------- Móvil ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  :root { --gutter: 18px; }
  .section, .statement, .cta { padding: 68px 0; }
  .cards { grid-template-columns: 1fr; }
  .timeline { grid-template-columns: 1fr; }
  .hero__trust { gap: 22px; }
  .hero__trust strong { font-size: 1.4rem; }
  .btn, .btn--lg { width: 100%; }
  .hero__actions, .cta__actions { flex-direction: column; }
  .float-card { display: none; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 6px; }
  .objection__flow i { display: none; }
  .wa-sticky span { display: none; }
  .wa-sticky { padding: 16px; }
  main { padding-bottom: 12px; }
}