/* =====================================================
   NNAC · Caja de Herramientas Digital
   responsive.css — Diseño mobile-first
   ===================================================== */

/* ---------- ≤ 1024px (tablet landscape) ---------- */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    padding-top: 48px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- ≤ 768px (tablet portrait y móvil grande) ---------- */
@media (max-width: 768px) {
  .header-top-inner {
    flex-wrap: wrap;
    min-height: auto;
    padding: 12px 0;
  }

  .brand { flex: 1; }

  .nav-toggle {
    display: block;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
  }

  .main-nav {
    order: 3;
    width: 100%;
    display: none;
  }
  .main-nav.is-open { display: block; }

  .nav-list {
    flex-direction: column;
    gap: 4px;
    padding: 8px 0;
  }

  .nav-link {
    display: block;
    width: 100%;
    text-align: center;
    padding: 12px;
  }

  .header-actions { gap: 6px; }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-top: 40px;
    padding-bottom: 80px;
    text-align: center;
  }

  .hero-actions { justify-content: center; }
  .hero-art { order: -1; }
  .hero-img { max-width: 220px; }

  .search-row {
    flex-direction: column;
  }

  .search-row .btn { width: 100%; }

  .filters-row {
    flex-direction: column;
    align-items: stretch;
  }

  .filters-row label {
    flex: 1 1 100%;
    min-width: 0;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-logos {
    justify-content: center;
  }

  .modal {
    padding: 24px 20px;
    max-height: 94vh;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ---------- ≤ 480px (móvil pequeño) ---------- */
@media (max-width: 480px) {
  :root { --header-h: 60px; }

  .brand-logo { width: 110px; }

  .brand-text strong { font-size: 1.1rem; }
  .brand-text small { font-size: .7rem; }

  .btn-lg {
    padding: 12px 20px;
    font-size: .95rem;
    flex: 1 1 100%;
  }

  .search-panel { padding: 16px; }

  .resource-card-actions { flex-direction: column; }
  .btn-card { width: 100%; }
  .btn-fav { align-self: flex-end; }

  .modal-overlay { padding: 12px; }

  .results-header { justify-content: center; text-align: center; }
}

/* ---------- Accesibilidad: modo alto contraste ---------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Accesibilidad: teclado ---------- */
.nav-link:focus-visible,
.btn:focus-visible,
.session-link:focus-visible,
.btn-fav:focus-visible,
.modal-close:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}