@media (max-width: 1024px) {
  .library-promo-inner,
  .intro-section,
  .about-cards {
    grid-template-columns: 1fr;
  }

  .library-promo-inner {
    padding: 1.5rem;
  }

  .two-col-grid,
  .curriculum-grid {
    grid-template-columns: 1fr;
  }

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

  .library-layout {
    grid-template-columns: 1fr;
  }

  .library-sidebar {
    position: static;
  }
}

@media (max-width: 767px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: var(--color-header-bg);
    flex-direction: column;
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .nav-menu.nav-open {
    display: flex;
  }

  .nav-menu li {
    width: 100%;
  }

  .nav-menu > li > a {
    padding: 0.75rem 1.25rem;
    height: auto;
    line-height: 1.4;
    border-radius: var(--radius-sm);
  }

  .nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: none;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.5rem;
    margin: 0.25rem 0 0 0;
    max-height: none;
  }

  .nav-dropdown a {
    color: rgba(255, 255, 255, 0.95);
  }

  .nav-dropdown a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
  }

  .nav-toggle {
    display: flex;
  }

  .home-banners .container {
    grid-template-columns: 1fr;
  }

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

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

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

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

  .scroll-to-top {
    left: 1rem;
    bottom: 1rem;
  }

  .page-content,
  .library-map-section {
    padding: 1.5rem 0 2.5rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .university-cards {
    grid-template-columns: 1fr;
  }

  .library-promo-inner {
    padding: 1.25rem;
  }

  .home-banner-card {
    min-height: 180px;
    font-size: 1.15rem;
  }
}