.course-catalog { width: min(1160px, calc(100% - 48px)); margin: 32px auto 72px; color: #303440; }
.course-catalog *, .course-catalog *::before, .course-catalog *::after { box-sizing: border-box; }
.course-catalog-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 26px; }
.course-catalog-heading > div { min-width: 0; }
.course-catalog-heading h1 { margin: 0; font-size: clamp(24px, 3vw, 30px); font-weight: 700; letter-spacing: -.035em; }
.course-catalog-heading p { margin: 8px 0 0; color: #777c88; font-size: 13px; line-height: 1.7; }
.course-catalog-create { display: inline-flex; justify-content: center; align-items: center; flex-shrink: 0; min-height: 38px; padding: 8px 14px; border: 1px solid var(--tripbora-primary); border-radius: 6px; background: var(--tripbora-primary); color: #fff; font: inherit; font-size: 13px; text-decoration: none; }
.course-kind-tabs { display: flex; gap: 20px; margin-bottom: 20px; border-bottom: 1px solid #e9e7ed; }
.course-kind-tabs a { padding: 0 0 12px; border-bottom: 2px solid transparent; color: #777c88; font-size: 14px; text-decoration: none; }
.course-kind-tabs a[aria-current=page] { border-color: var(--tripbora-primary); color: var(--tripbora-primary); font-weight: 600; }
.course-catalog-filters { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.course-catalog-filter-options { display: flex; min-width: 0; gap: 8px; }
.course-catalog-filter { position: relative; min-width: 0; }
.course-catalog-filter summary { display: flex; align-items: center; gap: 12px; min-height: 36px; max-width: 180px; padding: 8px 11px; border: 1px solid #e3e2e9; border-radius: 6px; background: #fff; color: #606674; font-size: 12px; line-height: 1.5; list-style: none; cursor: pointer; }
.course-catalog-filter summary::-webkit-details-marker { display: none; }
.course-catalog-filter summary > span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.course-catalog-filter summary::after { content: ''; flex-shrink: 0; width: 6px; height: 6px; margin-top: -3px; border-right: 1px solid currentColor; border-bottom: 1px solid currentColor; transform: rotate(45deg); }
.course-catalog-filter[open] > summary, .course-catalog-filter summary.is-active { border-color: #d8cbea; background: #f8f5fc; color: var(--tripbora-primary); }
.course-catalog-filter[open] > summary::after { margin-top: 3px; transform: rotate(225deg); }
.course-catalog-filter-menu { position: absolute; z-index: 10; top: calc(100% + 7px); left: 0; width: 240px; max-width: calc(100vw - 32px); max-height: min(320px, 55vh); overflow-y: auto; overscroll-behavior: contain; padding: 5px; border: 1px solid #e3e2e9; border-radius: 8px; background: #fff; box-shadow: 0 4px 14px rgb(40 31 55 / 8%); }
.course-catalog-filter-menu a { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 9px 10px; border-radius: 4px; color: #606674; font-size: 13px; line-height: 1.5; text-decoration: none; overflow-wrap: anywhere; }
.course-catalog-filter-menu a:hover { background: #f7f6f9; }
.course-catalog-filter-menu a[aria-current=true] { background: #f8f5fc; color: var(--tripbora-primary); font-weight: 600; }
.course-catalog-filter-menu a[aria-current=true]::after { content: '✓'; flex-shrink: 0; }
.course-catalog-sort { flex-shrink: 0; }
.course-catalog-sort summary { border-color: transparent; padding-right: 1px; background: transparent; }
.course-catalog-sort .course-catalog-filter-menu { right: 0; left: auto; width: 150px; }
.course-catalog-count { margin: 22px 0 12px; color: #777c88; font-size: 12px; }
.course-catalog-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px 20px; }
.course-catalog-card { display: flex; flex-direction: column; min-width: 0; overflow: hidden; border: 1px solid #e8e7ed; border-radius: 9px; background: #fff; }
.course-catalog-card-link { display: block; flex: 1; min-width: 0; color: inherit; text-decoration: none; }
.course-catalog-cover { aspect-ratio: 16 / 10; overflow: hidden; background: #f4f4f7; }
.course-catalog-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }
.course-catalog-copy { padding: 15px 16px 8px; }
.course-catalog-copy .course-official-badge { display: inline-block; margin-bottom: 6px; padding: 3px 6px; border: 0; border-radius: 4px; background: #f4effb; color: var(--tripbora-primary); font-size: 10px; font-weight: 600; line-height: 1.5; }
.course-catalog-title { display: -webkit-box; margin: 0 0 9px; overflow: hidden; color: #303440; font-size: 17px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.course-catalog-card-link:hover .course-catalog-title { color: var(--tripbora-primary); }
.course-catalog-route-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 10px; color: #747b88; font-size: 12px; line-height: 1.6; overflow-wrap: anywhere; }
.course-catalog-route-meta > span:last-child { flex-shrink: 0; }
.course-catalog-card-footer { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 16px 16px; color: #8a909b; font-size: 11px; }
.course-catalog-author { min-width: 0; overflow: hidden; color: #717986; text-decoration: none; text-overflow: ellipsis; white-space: nowrap; }
a.course-catalog-author:hover { text-decoration: underline; }
.course-catalog-views { flex-shrink: 0; }
.course-catalog-empty { padding: 64px 16px; color: #777c88; font-size: 14px; text-align: center; line-height: 1.7; }
.course-catalog-pagination { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 6px; margin-top: 32px; }
.course-catalog-pagination a, .course-catalog-pagination > span { display: inline-flex; justify-content: center; align-items: center; min-width: 34px; min-height: 34px; padding: 6px 10px; border-radius: 5px; color: #777c88; font-size: 12px; text-decoration: none; }
.course-catalog-pagination [aria-current=page] { background: #f4effb; color: var(--tripbora-primary); font-weight: 600; }
.course-catalog a:focus-visible, .course-catalog summary:focus-visible { outline: 2px solid var(--tripbora-primary); outline-offset: 3px; }
@media (max-width: 1023px) { .course-catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 639px) {
  .course-catalog { width: calc(100% - 32px); margin: 24px auto 56px; }
  .course-catalog-heading { gap: 12px; margin-bottom: 22px; }
  .course-catalog-heading p { font-size: 12px; }
  .course-catalog-create { min-height: 36px; padding: 8px 10px; font-size: 12px; }
  .course-catalog-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .course-catalog-filters { gap: 8px; }
  .course-catalog-filter { position: static; }
  .course-catalog-filter-options { flex: 1; gap: 6px; }
  .course-catalog-filter-options > details { flex: 0 1 auto; max-width: calc((100% - 6px) / 2); }
  .course-catalog-filter summary { gap: 8px; padding-inline: 9px; }
  .course-catalog-sort summary { max-width: 110px; padding-inline: 4px 1px; }
  .course-kind-tabs { gap: 18px; }
}