/* ============================================================
   DEAR Lab - Responsive + motion preferences
   ============================================================ */

@media (max-width: 1100px) {
  .footer__grid { grid-template-columns: 1.6fr 1fr 1fr; }
  .footer__grid > :last-child { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  :root { --nav-h: 70px; }

  .nav__toggle { display: flex; }

  /* Slide-in drawer (light, scrollable, full height) */
  .nav__menu {
    display: flex;
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw);
    height: 100vh;
    height: 100dvh;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: calc(var(--nav-h) + 0.75rem) var(--gutter) calc(var(--gutter) + env(safe-area-inset-bottom));
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    background: var(--paper);
    border-left: 1px solid var(--line);
    box-shadow: -18px 0 48px -24px rgba(20, 10, 30, 0.35);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.45s var(--ease), visibility 0s linear 0.45s;
    z-index: 999;
  }

  .nav__menu.is-open {
    transform: none;
    visibility: visible;
    transition: transform 0.45s var(--ease), visibility 0s;
  }

  .nav__menu .nav__group {
    display: flex;
    flex-direction: column;
    gap: 0;
    padding: 0;
    border: 0;
  }

  .nav__menu .nav__link,
  .nav--onpaper .nav__menu .nav__link {
    font-size: 0.95rem;
    letter-spacing: 0.08em;
    padding: 1rem 0.25rem;
    width: 100%;
    color: var(--text);
    border-bottom: 1px solid var(--line);
  }
  .nav__menu .nav__num,
  .nav--onpaper .nav__menu .nav__num { color: var(--text-faint); }
  .nav .nav__menu .nav__link:hover,
  .nav .nav__menu .nav__link--active,
  .nav .nav__menu .nav__link:hover .nav__num,
  .nav .nav__menu .nav__link--active .nav__num { color: var(--violet); }

  /* keep the close button above the open drawer */
  .nav__toggle { position: relative; z-index: 1000; }
  .nav__toggle[aria-expanded="true"] { color: var(--text); }

  .nav__num { font-size: 0.7rem; }

  .hero__tag { bottom: 1.1rem; }

  .split { grid-template-columns: minmax(0, 1fr); gap: var(--stack-md); }

  .logo-wall { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .logo-wall__cell { min-height: 120px; }
}

@media (max-width: 640px) {

  .footer__grid { grid-template-columns: 1fr; }
  .footer__grid > :last-child { grid-column: auto; }
  .footer__bottom { flex-direction: column; }

  .row { grid-template-columns: 1fr; gap: 0.75rem; }
  .row__num { padding-top: 0; }
  .row__body { grid-column: 1; }

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

@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; }

  body::after { animation: none; }

  .reveal, .reveal-stagger > * { opacity: 1; transform: none; }
}

/* ---------- Nav drawer below 1100px ---------- */
@media (max-width: 1100px) {
  .nav__inner { grid-template-columns: 1fr auto; }
  .nav__brand { border-right: 0; }
  .nav__toggle { display: flex; }

  .nav__menu {
    display: flex;
    position: fixed;
    inset: 0 0 0 auto;
    width: min(330px, 84vw);
    flex-direction: column;
    justify-content: center;
    gap: 0;
    padding: var(--nav-h) 0 var(--gutter);
    background: var(--paper);
    border-left: 1px solid var(--line);
    transform: translateX(100%);
    transition: transform var(--t-base);
    z-index: 999;
  }

  .nav__menu.is-open { transform: none; }

  .nav__group {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 1.1rem var(--gutter);
    gap: 0.9rem;
  }

  .nav__group:last-child { border-bottom: 0; }
  .nav__link { font-size: 0.8rem; color: var(--text); }
  .nav__num { color: var(--text-faint); }
}