/* ==========================================================================
   Responsive — breakpoints collected in one place for clarity
   ========================================================================== */

/* ---- ≤ 900px: catalog sidebar becomes a drawer, grid goes 2-col ---- */
@media (max-width: 900px) {
  .catalog__layout {
    flex-direction: column;
  }

  .filters--desktop {
    display: none;
  }

  .course-grid {
    grid-template-columns: repeat(2, 1fr);
    width: 100%;
  }

  .toolbar__filter-trigger {
    display: inline-flex;
  }
}

/* ---- ≤ 768px: mobile header, single-column sections, h-scrollers ---- */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .header__actions .icon-btn--search {
    display: none; /* search moves into the mobile menu */
  }

  .burger {
    display: block;
  }

  .header__right {
    gap: 16px;
  }

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

  .category-card {
    padding: 20px;
  }

  .category-card__title {
    font-size: 20px;
  }

  .category-card__text {
    font-size: 14px;
  }

  .course-card,
  .book-card {
    flex: 0 0 88vw;
    width: 88vw;
    max-width: 398px;
  }

  .course-card__title,
  .book-card__title {
    font-size: 20px;
  }

  .course-card__author,
  .book-card__author {
    font-size: 14px;
  }

  .dots {
    display: flex;
  }

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

  .footer__brand {
    align-items: center;
  }

  .footer__col {
    align-items: center;
  }

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

  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .toolbar__count {
    order: 3;
  }

  .toolbar__sort {
    justify-content: center;
  }
}

/* ---- ≤ 480px: small phones ---- */
@media (max-width: 480px) {
  .hero__title {
    font-size: 32px;
  }

  .btn--hero {
    padding: 6px 6px 6px 18px;
    gap: 10px;
  }

  .btn--round {
    width: 42px;
    height: 36px;
  }

  .btn--round .ra-icon {
    width: 42px !important;
    height: 36px !important;
  }
}