/* ============================================================
   ZERO Y UNO — Responsive Styles
   Mobile-first breakpoints
   ============================================================ */

/* ─────────────────────────────────────────────────────────────
   TABLET — ≤1024px
───────────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  :root { --max-w: 960px; }

  .hero-inner {
    gap: var(--space-10);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-right: 1px solid rgba(255,255,255,0.07); }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-sidebar {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .process-steps::before { display: none; }
}

/* ─────────────────────────────────────────────────────────────
   MOBILE — ≤768px
───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  :root {
    --header-h: 64px;
    --space-24: 4rem;
    --space-20: 3.5rem;
    --space-16: 3rem;
  }

  /* Header */
  .main-nav,
  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-navy);
    border-top: 1px solid rgba(255,255,255,0.1);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-4);
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-slow);
    z-index: 999;
  }

  .main-nav.open,
  .site-nav.open {
    max-height: 90vh;
    overflow-y: auto;
  }

  .site-nav .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav .nav-dropdown {
    max-height: none;
    overflow: visible;
    margin-left: 0;
    background: transparent;
  }

  .nav-link {
    padding: var(--space-3) var(--space-4);
    font-size: var(--fs-base);
    justify-content: space-between;
  }

  .nav-dropdown,
  .site-nav .dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    background: rgba(255,255,255,0.04);
    border: none;
    border-radius: var(--radius-md);
    box-shadow: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-slow);
    padding: 0;
    margin-left: var(--space-4);
  }

  .nav-item.dropdown-open .nav-dropdown,
  .site-nav .nav-dropdown.dropdown-open .dropdown-menu {
    max-height: 400px;
    padding: var(--space-2);
  }

  .header-cta .btn-primary { display: none; }
  .nav-toggle { display: flex; }

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    padding-block: var(--space-12);
  }

  .hero-visual { display: none; }

  .hero-actions { justify-content: center; }
  .hero-trust   { justify-content: center; }

  .hero-title { font-size: clamp(2rem, 8vw, 2.8rem); }
  .scroll-indicator { display: none; }

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

  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.07);
  }
  .stat-item:nth-last-child(-n+2) { border-bottom: none; }

  /* Services */
  .services-grid { grid-template-columns: 1fr; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-filter { gap: var(--space-2); }

  /* Team */
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  /* Blog */
  .blog-grid { grid-template-columns: 1fr; }

  /* Process */
  .process-steps {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  .process-steps::before { display: none; }

  /* Testimonial */
  .testimonial-card {
    padding: var(--space-6);
  }
  .testimonial-text { font-size: var(--fs-base); }

  /* CTA */
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-features { flex-direction: column; gap: var(--space-3); align-items: flex-start; }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-legal-links { flex-wrap: wrap; justify-content: center; }

  /* Grid utilities */
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }

  /* Sections */
  .section { padding-block: var(--space-16); }
  .section-header { margin-bottom: var(--space-10); }

  /* Page hero */
  .page-hero { padding: var(--space-12) 0 var(--space-10); }

  /* Article */
  .article-sidebar { grid-template-columns: 1fr; }

  /* Tabs */
  .tab-btn { padding: var(--space-3) var(--space-4); font-size: var(--fs-xs); }

  /* Cookie banner */
  .cookie-banner { flex-direction: column; align-items: flex-start; }
  .cookie-actions { width: 100%; justify-content: flex-end; }

  /* Back to top */
  .back-to-top { bottom: var(--space-4); right: var(--space-4); width: 42px; height: 42px; }

  /* Pricing */
  .pricing-grid { grid-template-columns: 1fr; }
  .pricing-card.featured { transform: none; }

  /* Override desktop dropdown hover in mobile */
  .nav-item:hover .nav-dropdown {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
  }
  .nav-item.dropdown-open .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

/* ─────────────────────────────────────────────────────────────
   SMALL MOBILE — ≤480px
───────────────────────────────────────────────────────────── */
@media (max-width: 480px) {
  :root {
    --space-24: 3.5rem;
    --space-16: 2.5rem;
    --space-12: 2.5rem;
  }

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

  .hero-title { font-size: clamp(1.75rem, 9vw, 2.5rem); }

  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { text-align: center; }

  .team-grid { grid-template-columns: 1fr; }

  .tech-logos { gap: var(--space-3); }
  .tech-logo-item { padding: var(--space-3) var(--space-4); font-size: var(--fs-xs); }

  .section-title  { font-size: clamp(1.5rem, 7vw, 2rem); }
  .cta-title      { font-size: clamp(1.5rem, 7vw, 2rem); }
  .page-hero-title{ font-size: clamp(1.75rem, 8vw, 2.5rem); }

  .btn-lg { padding: 0.875rem 1.75rem; }

  .footer-social { flex-wrap: wrap; }

  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ─────────────────────────────────────────────────────────────
   DESKTOP GRANDE — ≥1400px
───────────────────────────────────────────────────────────── */
@media (min-width: 1400px) {
  :root { --max-w: 1320px; }
  .hero-title { font-size: 4.5rem; }
  .services-grid { grid-template-columns: repeat(5, 1fr); }
}

/* ─────────────────────────────────────────────────────────────
   PRINT
───────────────────────────────────────────────────────────── */
@media print {
  .site-header, .back-to-top, .cookie-banner,
  .cta-section, .hero-visual, .nav-toggle,
  .testimonials-controls, .portfolio-filter, .footer-social {
    display: none !important;
  }

  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
    padding-top: 0;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
    background: none;
    color: #000;
  }

  .site-footer { background: none; color: #000; }

  a[href]::after { content: " (" attr(href) ")"; font-size: 10pt; color: #666; }
  a[href^="#"]::after, a[href^="tel:"]::after { content: none; }
}

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