/* ============================================================
   responsive.css — breakpoints for large / tablet / phone
   (portrait and landscape). Layout is fluid by default; these
   rules handle rearrangement at smaller widths.
   ============================================================ */

/* ---- Tablet and below ---- */
@media (max-width: 860px) {
  .details { grid-template-columns: 1fr; gap: var(--space-md); }
  .contact { grid-template-columns: 1fr; gap: var(--space-md); }
}

/* ---- Mobile navigation (collapsible) ---- */
@media (max-width: 720px) {
  .nav__toggle { display: flex; }

  .nav__links {
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    flex-direction: column;
    align-items: center;
    gap: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-line);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .nav__links.is-open { max-height: 60vh; }

  .nav__links li { width: 100%; text-align: center; }

  .nav__links a {
    display: block;
    padding: var(--space-sm);
    border-top: 1px solid var(--color-line);
  }

  .nav { position: sticky; }
  .nav__inner { position: relative; }
}

/* ---- Phone ---- */
@media (max-width: 540px) {
  .form__row { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .section { padding-block: var(--space-lg); }
}

/* ---- Short landscape phones: reclaim vertical space ---- */
@media (max-height: 480px) and (orientation: landscape) {
  .hero { min-height: auto; padding-block: var(--space-lg); }
}

/* ---- Respect reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}