/* ============================================
   REAVC.ORG — RESPONSIVE.CSS
   Mobile-first breakpoints
   ============================================ */

/* Hide utility bar on small screens */
@media (max-width: 1024px) {
  .header__utility { display: none; }
  :root { --header-total-height: 80px; }

  .nav__toggle { display: flex; }

  .nav {
    position: fixed;
    top: var(--header-main-height);
    right: -100%;
    width: 100%;
    max-width: 360px;
    height: calc(100vh - var(--header-main-height));
    background: var(--color-white);
    box-shadow: var(--shadow-xl);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--space-lg);
    overflow-y: auto;
    transition: right 0.3s ease;
    z-index: 999;
  }
  .nav.is-open { right: 0; }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    width: 100%;
  }
  .nav__link {
    display: block;
    padding: 16px 20px;
    font-size: 17px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav__link::after { display: none; }
  .nav__item--dropdown > .nav__link::before {
    float: right;
    font-size: 14px;
    margin-top: 4px;
  }
  .nav__dropdown {
    position: static;
    box-shadow: none;
    border: none;
    border-radius: 0;
    background: var(--color-bg-alt);
    padding: 0;
    margin: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-top: none;
  }
  .nav__item--dropdown.is-open .nav__dropdown { max-height: 500px; }
  .nav__dropdown a {
    padding: 12px 32px;
    font-size: 15px;
    border-bottom: 1px solid var(--color-border);
  }
  .nav__cta { margin: var(--space-md) 0 0; display: block; text-align: center; }
  .nav__cta .btn { width: 100%; display: block; }
}

/* Large tablet */
@media (max-width: 992px) {
  .hero__title { font-size: 42px; }
  .hero__subtitle { font-size: 19px; }
  .page-hero h1 { font-size: 36px; }

  .president-message {
    flex-direction: column;
    text-align: center;
    padding: var(--space-xl);
    gap: var(--space-lg);
  }
  .president-message__photo { flex: none; }
  .president-message__content blockquote {
    border-left: none;
    padding-left: 0;
    border-top: 4px solid var(--color-secondary);
    padding-top: var(--space-md);
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  h1 { font-size: 40px; }
  h2 { font-size: 30px; }
  h3 { font-size: 22px; }

  .cta-split h2 { font-size: 32px; }
}

/* Tablet */
@media (max-width: 768px) {
  :root {
    --fs-h1: 36px;
    --fs-h2: 28px;
    --fs-h3: 22px;
    --space-3xl: 60px;
    --space-2xl: 48px;
  }

  .hero__title { font-size: 36px; }
  .hero__subtitle { font-size: 17px; }
  .hero { min-height: auto; padding-top: calc(var(--header-total-height) + var(--space-2xl)); }

  .page-hero h1 { font-size: 30px; }
  .page-hero { min-height: auto; padding-top: calc(var(--header-total-height) + var(--space-xl)); }

  .section { padding: var(--space-2xl) 0; }

  .form-group--row { grid-template-columns: 1fr; }

  .trust-stat__number { font-size: 36px; }

  .president-message__photo img {
    width: 180px;
    height: 180px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    text-align: left;
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }

  .contact-form { padding: var(--space-lg); }

  .membership-tiers {
    grid-template-columns: 1fr;
  }
  .tier-card--featured { transform: none; }
  .tier-card--featured:hover { transform: translateY(-4px); }

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

/* Mobile */
@media (max-width: 576px) {
  :root {
    --fs-h1: 30px;
    --fs-h2: 24px;
    --container-padding: 16px;
  }
  .hero__title { font-size: 30px; }
  .page-hero h1 { font-size: 26px; }

  .news-alert {
    flex-direction: column;
    padding: var(--space-lg);
  }

  .trust-bar__grid { gap: var(--space-md); }
  .trust-stat { flex: 1 1 45%; }
  .trust-stat__number { font-size: 32px; }
  .trust-stat__label { font-size: 13px; }

  .error-page__number { font-size: 100px; }
  .error-page h1 { font-size: 28px; }

  .header__logo-name { font-size: 20px; }
  .header__logo-tagline { font-size: 10px; }
}