/* ═══════════════════════════════════════════
   RESPONSIVE — Adaptacion a pantallas pequenas
   Todas las reglas @media consolidadas aqui
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {

  /* ── Menu hamburguesa visible ── */
  .nav-hamburger { display: flex; }

  /* ── Nav links: ocultos por defecto, menu vertical cuando abierto ── */
  .nav-links {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    height: calc(100vh - 76px);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 40px;
    gap: 4px;
    background: #fff;
    overflow-y: auto;
    z-index: 199;
  }
  .nav-links.mobile-open { display: flex; }
  .nav-link::after { display: none; }

  /* Links del menu movil: mas grandes y tocables */
  .nav-links .nav-link {
    font-size: 16px;
    padding: 14px 16px;
    border-radius: 10px;
    text-align: left;
    width: 100%;
    justify-content: flex-start;
  }
  .nav-links .nav-link:hover { background: var(--navy-50); }
  .nav-links .nav-link.active {
    background: var(--navy-50);
    color: var(--navy-700);
    font-weight: 600;
  }

  /* Menu en hero-mode: fondo oscuro */
  .nav.hero-mode .nav-links.mobile-open {
    background: var(--navy-900, #0f172a);
  }
  .nav.hero-mode .nav-links .nav-link {
    color: rgba(255,255,255,0.65);
  }
  .nav.hero-mode .nav-links .nav-link:hover {
    color: #2CB67D;
    background: rgba(255,255,255,0.06);
  }
  .nav.hero-mode .nav-links .nav-link.active {
    color: #fff;
    background: rgba(255,255,255,0.1);
  }

  /* Animacion de entrada del menu */
  @keyframes menuSlideIn {
    from { opacity: 0; transform: translateY(-12px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ── Overlay de fondo al abrir menu ── */
  .nav-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.3);
    z-index: 198;
    animation: fadeIn 0.3s ease both;
  }
  .nav-overlay.active { display: block; }
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  /* ── Dropdowns como acordeones en movil ── */
  .nav-dropdown { width: 100%; }
  .nav-dropdown-trigger {
    width: 100%; justify-content: space-between;
    font-size: 16px; padding: 14px 16px; border-radius: 10px;
  }
  .nav-dropdown-trigger.parent-active {
    background: var(--navy-50); color: var(--navy-700); font-weight: 600;
  }
  .nav-dropdown-menu {
    position: static; transform: none;
    min-width: 0; background: transparent; border: none;
    border-radius: 0; padding: 0; box-shadow: none;
    max-height: 0; overflow: hidden;
    opacity: 1; visibility: visible; pointer-events: auto;
    transition: max-height 0.35s cubic-bezier(0.22,1,0.36,1);
  }
  .nav-dropdown.open .nav-dropdown-menu {
    max-height: 250px;
    padding: 2px 0 6px 16px;
    transform: none;
  }
  .nav-dropdown-menu .nav-link {
    font-size: 15px; padding: 12px 16px; border-radius: 8px;
  }

  /* Hero-mode: acordeon */
  .nav.hero-mode .nav-dropdown-menu {
    background: transparent; backdrop-filter: none;
    border: none; box-shadow: none;
  }
  .nav.hero-mode .nav-dropdown-trigger.parent-active {
    color: #fff; background: rgba(255,255,255,0.1);
  }

  /* Hero: vertical y mas compacto */
  .hero { min-height: calc(100vh - 64px); }
  .hero-inner { flex-direction: column; gap: 32px; padding: 130px 24px 80px; }
  .hero-scroll-indicator { bottom: 24px; }
  .hero-scroll-chevron { width: 24px; height: 24px; }
  .nav-logo-img { height: 40px; }
  .hero-photo-wrap { order: -1; }
  .hero-photo { width: 220px; height: 275px; }
  .hero h1 { font-size: 32px; }

  /* Stats: 2 columnas */
  .stats-row { grid-template-columns: repeat(2, 1fr); }

  /* Areas: 1 columna */
  .areas-grid { grid-template-columns: 1fr; }

  /* Propuesta de valor: 1 columna */
  .propval-grid { grid-template-columns: 1fr; }

  /* Competencias: 1 columna */
  .comp-grid { grid-template-columns: 1fr; }

  /* Utilia: vertical y mas pequeno */
  .utilia-inner { flex-direction: column; gap: 32px; }
  .utilia-visual { width: 200px; height: 200px; }
  .utilia-logo-text { font-size: 40px; }

  /* Timeline: colapsar a columna unica */
  .tl-unified { padding-left: 30px; }
  .tl-unified::before { left: 7px; transform: none; }
  .tl-unified::after { left: 6px; transform: none; }
  .tl-entry { width: 100% !important; margin-left: 0 !important; margin-right: 0 !important; text-align: left !important; padding-left: 0 !important; padding-right: 0 !important; }
  .tl-dot { left: -30px !important; right: auto !important; }
  .tl-entry:hover .tl-body { transform: translateX(3px) !important; }
  .tl-era { text-align: left; margin-left: -30px; }
  .tl-era span { font-size: 10px; padding: 4px 14px; }
  .tl-progress-line { left: 7px; margin-left: 0; transform-origin: top center; }
  .tl-entry.reveal[data-branch="exp"],
  .tl-entry.reveal[data-branch="form"] { transform: translateY(22px); }
  .tl-legend { gap: 20px; }

  /* Contacto: 1 columna */
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .form-row { grid-template-columns: 1fr; }
  .contact-map { height: 180px; }

  /* Base IA: adaptaciones movil */
  .baseia-progress-wrap { max-width: 100%; }
  .baseia-blocks { grid-template-columns: 1fr; }
  .baseia-compare { grid-template-columns: 1fr; }
  .baseia-chapter-header { flex-direction: column; gap: 12px; }
  .baseia-chapter-img { height: 180px; border-radius: 10px; }
  .baseia-chapter-img::after { border-radius: 10px; }
  .baseia-section-content { padding: 0 16px 16px; }
  .baseia-section-header { padding: 14px 16px; }
  .baseia-exercise-btns { flex-direction: column; }
  .baseia-scroll-top { bottom: 20px; right: 20px; width: 40px; height: 40px; }

  /* Base IA — 3-Level Navigation */
  .baseia-header-compact { padding: 60px 20px 28px; }
  .baseia-level .baseia-header-compact .inner { padding-left: 16px; padding-right: 16px; }
  .baseia-nav-inner { padding: 0 16px 32px; }
  .baseia-sections-grid { grid-template-columns: 1fr; gap: 16px; margin: 24px auto 32px; }
  .baseia-section-card { padding: 20px; }
  .baseia-sc-desc { -webkit-line-clamp: 3; }
  .baseia-chapter-row { padding: 12px 16px; gap: 12px; }
  .baseia-cr-time { font-size: 10px; padding: 2px 6px; }
  .baseia-section-nav { flex-wrap: wrap; justify-content: center; gap: 10px; }
  .baseia-l3-nav { flex-wrap: wrap; justify-content: center; gap: 10px; }
  .baseia-l3-nav-center { order: 3; width: 100%; text-align: center; padding: 8px 16px; }
  .baseia-header-compact .eyebrow { font-size: 12px; }
  .baseia-breadcrumb--light .baseia-bc-current { font-size: 12px; }
  .baseia-section-nav .btn,
  .baseia-l3-nav .btn { font-size: 12px; padding: 8px 12px; }
  .baseia-breadcrumb { font-size: 12px; }
  .baseia-header-back { font-size: 12px; margin-bottom: 12px; }
  #baseia-level-3 .baseia-chapter { padding-left: 16px; padding-right: 16px; }
  #baseia-level-3 .baseia-l3-nav { padding-left: 16px; padding-right: 16px; }
  #baseia-level-3 .baseia-chapter.baseia-ch--active .baseia-chapter-img { height: 200px; max-height: 200px; }
  #baseia-level-3 .baseia-chapter.baseia-ch--active .baseia-chapter-img img { max-height: 200px; }

  /* FAQ: ajustes movil */
  .faq-header { font-size: 15px; padding: 16px 4px; gap: 12px; }
  .faq-icon { width: 24px; height: 24px; font-size: 16px; }
  .faq-content { padding: 0 4px 20px 40px; }

  /* Footer: centrado */
  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
}