/* ===================================================
   RESPONSIVE.CSS — Glasscor Mirror
   Mobile: <768px | Tablet: 768-1024px | Desktop: >1024px
   =================================================== */

/* ─── TABLET (768px – 1024px) ────────────────────── */
@media (max-width: 1024px) {

  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
    --space-24: 4rem;
    --space-20: 3.5rem;
  }

  .container { padding: 0 var(--space-5); }

  /* Header */
  .main-nav { gap: 0; }
  .nav-link { padding: var(--space-2) var(--space-3); font-size: 0.8rem; }
  .header-cta .btn-outline { display: none; }

  /* Hero */
  .hero-title { font-size: 2.25rem; }
  .hero-stats { gap: var(--space-6); }

  /* Grids */
  .benefits-grid { grid-template-columns: repeat(3, 1fr); gap: var(--space-5); }
  .products-grid  { grid-template-columns: repeat(2, 1fr); }
  .projects-grid  { grid-template-columns: repeat(2, 1fr); }
  /* L5: footer 3 columnas en tablet */
  .footer-grid    {
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-8);
  }
  .footer-grid .footer-brand {
    grid-column: 1 / -1;
  }
  .categories-grid { grid-template-columns: repeat(2, 1fr); }

  /* Split */
  .split-section {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
  .split-section.reverse { direction: ltr; }

  /* Stats bar */
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }

  /* Value props */
  .value-props { grid-template-columns: 1fr 1fr; }

  /* About */
  .about-data { grid-template-columns: 1fr; }

  /* Certs */
  .certs-grid { grid-template-columns: 1fr; }

  /* Contact */
  .contact-layout { grid-template-columns: 1fr; gap: var(--space-8); }

  /* Lightbox nav */
  .lightbox-prev { left: -var(--space-10); }
  .lightbox-next { right: -var(--space-10); }
}

/* ─── MOBILE (<768px) ────────────────────────────── */
@media (max-width: 767px) {

  :root {
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.625rem;
    --font-size-3xl: 1.375rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl:  1.125rem;
    --space-24: 3rem;
    --space-20: 2.5rem;
    --space-16: 2.5rem;
    --space-12: 2rem;
    --header-h: 68px;
  }

  .container { padding: 0 var(--space-4); }

  /* ── Header mobile ── */
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-primary);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--space-4) var(--space-4) var(--space-6);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 4px 0 20px rgba(0,0,0,0.3);
    border-top: 1px solid rgba(255,255,255,0.1);
    z-index: 999;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .nav-toggle { display: flex; }

  .nav-item { width: 100%; }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    justify-content: space-between;
    color: rgba(255,255,255,0.9);
  }

  /* Dropdown mobile — expandible */
  .dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-md);
    margin-top: var(--space-2);
    display: none;
  }

  .nav-item.open .dropdown { display: block; }

  .dropdown-mega {
    display: block;
    min-width: 0;
  }

  .dropdown-col {
    padding: var(--space-3);
    border: none;
  }

  .dropdown-col:first-child { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.08); }

  .dropdown-col-title {
    color: rgba(255,255,255,0.5);
    border-color: rgba(255,255,255,0.1);
  }

  .dropdown-link {
    color: rgba(255,255,255,0.8);
    font-size: var(--font-size-sm);
  }

  .dropdown-link:hover {
    color: var(--color-white);
    background: rgba(255,255,255,0.08);
  }

  .dropdown-simple { padding: var(--space-2); }

  .header-cta .btn { display: none; }

  /* ── Hero mobile ── */
  .hero { min-height: 80svh; }

  .hero-title { font-size: 1.75rem; }
  .hero-subtitle { font-size: var(--font-size-md); }

  .hero-actions { flex-direction: column; gap: var(--space-3); }
  .hero-actions .btn { width: 100%; justify-content: center; }

  .hero-stats {
    gap: var(--space-6);
    flex-wrap: wrap;
  }

  .hero-stat .number { font-size: var(--font-size-2xl); }

  /* ── Grids mobile ── */
  .benefits-grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .products-grid  { grid-template-columns: 1fr; }
  .projects-grid  { grid-template-columns: 1fr; }
  .value-props    { grid-template-columns: 1fr; }
  .categories-grid { grid-template-columns: 1fr 1fr; gap: var(--space-3); }
  .certs-grid     { grid-template-columns: 1fr; }
  .about-data     { grid-template-columns: 1fr; }
  .form-row       { grid-template-columns: 1fr; }

  /* ── Footer mobile ── */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: var(--space-3);
  }

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

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

  /* ── Split section ── */
  .split-section { grid-template-columns: 1fr; gap: var(--space-6); }
  .split-section.reverse { direction: ltr; }

  /* ── Contact layout ── */
  .contact-layout { grid-template-columns: 1fr; }

  /* ── Page hero ── */
  .page-hero h1 { font-size: var(--font-size-3xl); }

  /* ── Section ── L3: más espaciado entre secciones en móvil */
  .section { padding: var(--space-16) 0; }
  .section-header { margin-bottom: var(--space-10); }

  /* ── Cookie banner ── */
  .cookie-banner-inner { flex-direction: column; align-items: stretch; }
  .cookie-banner-actions {
    flex-direction: column;
    gap: var(--space-2);
  }
  .cookie-banner-actions .btn { width: 100%; justify-content: center; text-align: center; }

  /* ── Lightbox ── */
  .lightbox-overlay { padding: var(--space-4); }
  .lightbox-prev { left: var(--space-2); }
  .lightbox-next { right: var(--space-2); }
  .lightbox-close { top: -44px; }

  /* ── WhatsApp float ── */
  .whatsapp-float {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 48px;
    height: 48px;
  }

  /* ── Cert cards ── */
  .cert-card {
    flex-direction: column;
    align-items: flex-start;
  }

  /* ── Section titles ── */
  .section-title { font-size: var(--font-size-2xl); }
  .section-subtitle { font-size: var(--font-size-md); }

  /* ── Timeline ── */
  .timeline { padding-left: var(--space-8); }
  .timeline::before { left: 14px; }
  .timeline-dot { left: calc(-1 * var(--space-8) + 8px); }
}

/* ─── PEQUEÑO MOBILE (<480px) ────────────────────── */
@media (max-width: 479px) {
  :root {
    --font-size-5xl: 1.75rem;
    --font-size-4xl: 1.5rem;
  }

  .hero-stats { flex-direction: column; gap: var(--space-4); }
  .hero-badge { font-size: 0.7rem; }
  .stats-inner { grid-template-columns: 1fr 1fr; }
  .categories-grid { grid-template-columns: 1fr; }
  .footer-legal-links { gap: var(--space-3); }
  .contact-form { padding: var(--space-5); }

  .lightbox-nav { display: none; }
}

/* ─── DESKTOP GRANDE (>1280px) ───────────────────── */
@media (min-width: 1280px) {
  :root { --max-width: 1280px; }
  .products-grid { grid-template-columns: repeat(4, 1fr); }
  .hero-title { font-size: var(--font-size-6xl); }
}

/* ─── PREFERENCIA DE REDUCIR MOVIMIENTO ─────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .fade-in { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}