/* =================================================================
   GAB360 — Responsive
   Breakpoints: 1200 (notebook) / 980 (tablet) / 680 (mobile large) / 480 (mobile)
   ================================================================= */

/* ---------- Notebook (<=1200px) ---------- */
@media (max-width: 1200px){
  :root{ --container: 100%; --gutter: 28px; }
  .hero-grid{ gap: 44px; }
  .arch-flow{ grid-template-columns: 1fr auto 1fr auto 1fr; gap: 10px; }
  .grid-cards.cols-4{ grid-template-columns: repeat(3, 1fr); }
  .footer-top{ grid-template-columns: 1.4fr 1fr 1fr; row-gap: 40px; }
}

/* ---------- Tablet (<=980px) ---------- */
@media (max-width: 980px){
  .section{ padding: 96px 0; }
  .section-tight{ padding: 72px 0; }

  .nav-menu{ display: none; }
  .nav-cta{ display: none; }
  .nav-burger{ display: flex; }

  .hero{ padding-top: calc(var(--header-h) + 56px); }
  .hero-grid{ grid-template-columns: 1fr; }
  .hero h1{ max-width: 100%; }
  .float-chip{ display: none; }

  .logo-row{ grid-template-columns: repeat(3, 1fr); }

  .arch-flow{ grid-template-columns: 1fr; }
  .arch-connector{ transform: rotate(90deg); margin: 2px auto; }
  .arch-stack{ flex-direction: row; flex-wrap: wrap; }
  .arch-node{ flex: 1 1 calc(50% - 7px); }

  .grid-cards.cols-4, .grid-cards.cols-3{ grid-template-columns: repeat(2, 1fr); }

  .ai-wrap{ grid-template-columns: 1fr; gap: 48px; }

  .feature-row, .feature-row.reverse{ grid-template-columns: 1fr; gap: 30px; padding: 44px 0; }
  .feature-row.reverse .feature-visual{ order: 0; }

  .contact-grid{ grid-template-columns: 1fr; gap: 40px; }
  .form-row{ grid-template-columns: 1fr; gap: 0; }

  .compare-row{ grid-template-columns: 1fr; }
  .compare-cell{ padding: 12px 22px; }
  .compare-row.head .compare-cell:first-child{ display: none; }
  .compare-row .compare-cell.label{ padding-top: 20px; font-weight: 700; color: var(--white); }

  .stats-band{ grid-template-columns: repeat(2, 1fr); gap: 36px; }

  .footer-top{ grid-template-columns: 1fr 1fr; gap: 36px 24px; }
  .footer-brand{ grid-column: 1 / -1; }
}

/* ---------- Mobile large (<=680px) ---------- */
@media (max-width: 680px){
  .hero h1{ font-size: 34px; }
  .hero .actions{ flex-direction: column; align-items: stretch; }
  .hero-proof{ flex-wrap: wrap; row-gap: 10px; }

  .panel{ padding: 20px; }
  .panel-kpis{ grid-template-columns: 1fr 1fr; }
  .panel-kpis .panel-kpi:last-child{ grid-column: span 2; }
  .panel-map{ grid-template-columns: 1fr; }

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

  .arch-node{ flex: 1 1 100%; }

  .grid-cards.cols-4, .grid-cards.cols-3, .grid-cards.cols-2{ grid-template-columns: 1fr; }

  .cta-band{ padding: 90px 0; }
  .cta-actions{ flex-direction: column; align-items: stretch; }

  .footer-top{ grid-template-columns: 1fr; }
  .footer-bottom{ flex-direction: column; align-items: flex-start; }
}

/* ---------- Mobile (<=480px) ---------- */
@media (max-width: 480px){
  :root{ --gutter: 20px; }
  .hero h1{ font-size: 29px; }
  .section-head h2{ font-size: 26px; }
  .stats-band{ grid-template-columns: 1fr 1fr; }
  .panel-chart svg{ height: 96px; }
}