/* ===================================================================
   ITD Next Dimension — Responsive
   =================================================================== */

/* ---- Tablet: ≤ 1024px ---- */
@media (max-width: 1024px) {
  :root {
    --section-pad-v: 96px;
  }

  .nav-links { gap: 22px; }
  .nav-links a { font-size: 13px; }

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

  .stats-bar .section-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }

  .case-stats { grid-template-columns: repeat(2, 1fr); gap: 24px; }

  .console-body { grid-template-columns: 1fr; }
  .console-side { border-right: none; border-bottom: 1px solid var(--border); }
  .console-side:last-child { border-left: none; border-top: 1px solid var(--border); }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .industry-block { grid-template-columns: 160px 1fr; }
}

/* ---- Mobile: ≤ 768px ---- */
@media (max-width: 768px) {
  :root {
    --section-pad-v: 72px;
    --nav-height: 64px;
  }

  body { font-size: 15px; }

  .nav { top: 12px; left: 12px; right: 12px; height: 56px; }
  .nav-inner { padding: 0 16px; gap: 12px; }
  .nav-links, .nav-cta .nav-signin { display: none; }
  .nav-cta { display: none; }
  .nav-hamburger { display: flex; }

  .nav-logo .logo-mark { width: 30px; height: 22px; }
  .nav-logo .logo-itd { font-size: 14px; }
  .nav-logo .logo-nd { font-size: 16px; }

  /* Mobile overlay dropdown — accordion-style inline expansion */
  .nav-mobile-overlay .nav-dropdown {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .nav-mobile-overlay .nav-dropdown-trigger {
    font-family: var(--font-sans);
    font-size: 24px;
    font-weight: 500;
    color: var(--ink);
    letter-spacing: -0.02em;
    gap: 8px;
  }

  .nav-mobile-overlay .nav-dropdown-trigger .chevron {
    width: 14px;
    height: 14px;
  }

  .nav-mobile-overlay .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    box-shadow: none;
    background: var(--bg-deep);
    min-width: 240px;
    margin-top: 12px;
    max-height: 0;
    overflow: hidden;
    padding: 0;
    border-color: transparent;
    transition:
      max-height var(--t-base),
      opacity var(--t-base),
      padding var(--t-base),
      border-color var(--t-base),
      visibility 0s linear var(--t-base);
  }

  .nav-mobile-overlay .nav-dropdown-trigger[aria-expanded="true"] + .nav-dropdown-menu {
    transform: none;
    max-height: 280px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    padding: 8px;
    border-color: var(--border);
    transition:
      max-height var(--t-base),
      opacity var(--t-base),
      padding var(--t-base),
      border-color var(--t-base),
      visibility 0s linear 0s;
  }

  .nav-mobile-overlay .nav-dropdown-item .dropdown-item-title { font-size: 16px; }

  .hero { padding-top: calc(var(--nav-height) + 60px); padding-bottom: 80px; }
  .hero h1 { font-size: 42px; }
  .hero h1 .italic { font-size: 1.08em; }
  .hero p { font-size: 16px; }

  .page-header { padding-top: calc(var(--nav-height) + 60px); padding-bottom: 56px; }

  h1 { font-size: 40px; }
  h2 { font-size: 30px; }
  h3 { font-size: 19px; }

  .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; gap: 14px; }

  .section-header { flex-direction: column; align-items: flex-start; gap: 18px; margin-bottom: 36px; }
  .section-header-aside { max-width: none; }

  .stats-bar { padding: 56px var(--section-pad-h); }
  .stats-bar .section-inner { grid-template-columns: 1fr 1fr; gap: 20px; }
  .stat-item .stat-number { font-size: 48px; }

  .case-card { padding: 28px; }
  .case-header { flex-direction: column; gap: 16px; }
  .case-header h3 { font-size: 24px; }
  .case-badge { white-space: normal; }
  .case-stats { grid-template-columns: 1fr 1fr; gap: 20px; }
  .case-stat-number { font-size: 40px; }

  .trust-bar { padding: 40px var(--section-pad-h); gap: 28px; }
  .trust-bar .trust-name { font-size: 14px; }

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

  .industry-grid { gap: 12px; }
  .industry-block { grid-template-columns: 1fr; gap: 12px; padding: 18px 0; }
  .industry-label { padding-top: 0; }

  .contact-form-wrap { padding: 28px 22px; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; padding-bottom: 40px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; align-items: flex-start; padding-top: 18px; }

  .cta-block { padding: 80px var(--section-pad-h); }

  .pathway-number { font-size: 44px; }
}

/* ---- Small mobile: ≤ 480px ---- */
@media (max-width: 480px) {
  .hero h1 { font-size: 36px; }
  .hero p { font-size: 15px; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }

  .stats-bar .section-inner { grid-template-columns: 1fr; }
  .case-stats { grid-template-columns: 1fr; }

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

  .btn { font-size: 13px; padding: 11px 20px; }
}