/* 클래버 — 담당 learn 의 화면 CSS(수강생 화면). 클래스 접두어는 .learn- 만. 토큰은 base.css :root 의 var(--…) 만(hex·rgb 직접 금지), 크기는 rem. */

/* ── 공통 틀: 본문 + 오른쪽 카드 ── */
.learn-two { display: grid; grid-template-columns: minmax(0, 1fr) 22.5rem; gap: var(--sp-6); align-items: start; }
.learn-main { min-width: 0; }
.learn-side { min-width: 0; position: sticky; top: calc(var(--header-h) + var(--sp-4)); }
.learn-h { margin-bottom: 0; display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.learn-kv { grid-template-columns: max-content minmax(0, 1fr); font-size: var(--fs-sm); }
.learn-stats { grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
.learn-stats .d .stars { margin-right: .25rem; }
.learn-toolbar { display: flex; flex-wrap: wrap; gap: var(--sp-3); align-items: center; justify-content: space-between; }
.learn-toolbar .tabs { flex: 1 1 auto; min-width: 0; }
.learn-toolbar .filter-bar { flex: 1 1 26rem; }
.learn-sort { display: flex; gap: var(--sp-2); align-items: center; }
.learn-sort .select { min-width: 10rem; }
.learn-chips { flex-wrap: wrap; }
.learn-links { display: flex; flex-wrap: wrap; gap: var(--sp-2); border-top: 1px solid var(--line); padding-top: var(--sp-4); }

/* ── 표(내 학습·수료증) ── */
.learn-table th, .learn-table td { vertical-align: middle; }
.learn-course { display: flex; gap: var(--sp-3); align-items: center; min-width: 0; }
.learn-thumb-sm { width: 5.5rem; flex: 0 0 5.5rem; }
.learn-thumb-sm .thumb-label { display: none; }
.learn-sub { margin-top: .125rem; font-weight: 500; }
.learn-m-only, .learn-m-label { display: none; }
.learn-table .pbar { min-width: 9rem; }
.learn-pbar.is-full .pbar-fill { background: var(--ok); }
.learn-done-txt { display: inline-flex; align-items: center; gap: .25rem; color: var(--ok); font-weight: 650; margin-top: .125rem; }
.learn-actions { display: flex; gap: var(--sp-2); flex-wrap: wrap; justify-content: flex-end; }
.learn-actions .btn { min-height: 2.5rem; padding: 0 .9rem; font-size: var(--fs-sm); }

/* ── 차시 상세 ── */
.learn-lesson-poster { position: relative; aspect-ratio: 16 / 9; border-radius: var(--r); overflow: hidden; background: var(--video-bg); }
.learn-lesson-poster img { width: 100%; height: 100%; object-fit: cover; opacity: .8; }
.learn-poster-play { position: absolute; inset: 0; margin: auto; width: 4.5rem; height: 4.5rem; border-radius: 50%; display: grid; place-items: center; background: var(--overlay-2); color: var(--on-night); transition: transform var(--t-short) var(--ease), background var(--t-short) var(--ease); }
.learn-poster-play:hover { background: var(--accent); transform: scale(1.05); }
.learn-poster-play .ic { width: 2rem; height: 2rem; fill: currentColor; }
.learn-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-3) var(--sp-5); margin-top: var(--sp-4); padding-top: var(--sp-4); border-top: 1px solid var(--line); }
.learn-facts dt { display: flex; align-items: center; gap: .375rem; font-size: var(--fs-sm); color: var(--ink-3); font-weight: 650; }
.learn-facts dd { margin-top: .125rem; font-weight: 700; }
.learn-goals { display: grid; gap: var(--sp-2); margin-top: var(--sp-3); }
.learn-goals li { display: flex; gap: var(--sp-2); align-items: flex-start; }
.learn-goals .ic { color: var(--accent); margin-top: .1875rem; }
.learn-nav-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); margin-top: var(--sp-2); }
.learn-nav-btn { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-3) var(--sp-4); border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); min-height: 4rem; font-weight: 700; }
.learn-nav-btn small { display: block; font-size: var(--fs-xs); color: var(--ink-3); font-weight: 600; }
.learn-nav-btn > span { min-width: 0; }
.learn-nav-btn.is-next { justify-content: flex-end; text-align: right; }
a.learn-nav-btn:hover { border-color: var(--ink-3); box-shadow: var(--shadow-sm); }
.learn-nav-btn.is-off { color: var(--ink-3); background: var(--surface-3); }

/* ── 수료증 문서(인쇄용) ── */
.learn-cert-doc { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r-lg); padding: var(--sp-6) var(--sp-6) var(--sp-5); box-shadow: var(--shadow-sm); position: relative; }
.learn-cert-doc::before { content: ""; position: absolute; inset: .6rem; border: 2px solid var(--accent-soft); border-radius: var(--r); pointer-events: none; }
.learn-cert-top { display: flex; justify-content: space-between; align-items: flex-start; gap: var(--sp-4); flex-wrap: wrap; padding-bottom: var(--sp-4); border-bottom: 1px solid var(--line); position: relative; }
.learn-cert-no { text-align: right; display: flex; flex-direction: column; font-size: var(--fs-sm); color: var(--ink-3); }
.learn-cert-no strong { color: var(--ink); font-size: var(--fs-md); letter-spacing: .02em; }
.learn-cert-title { text-align: center; padding: var(--sp-6) 0 var(--sp-4); position: relative; }
.learn-cert-label { font-size: var(--fs-xs); color: var(--accent-ink); font-weight: 750; letter-spacing: .2em; }
.learn-cert-title h2 { font-size: 2.25rem; margin-top: var(--sp-2); letter-spacing: .3em; }
.learn-cert-name { font-size: var(--fs-h4); font-weight: 800; margin-top: var(--sp-5); }
.learn-cert-name span { font-size: var(--fs-md); font-weight: 600; color: var(--ink-3); }
.learn-cert-course { font-size: var(--fs-lg); font-weight: 800; margin-top: var(--sp-3); }
.learn-cert-inst { color: var(--ink-3); margin-top: .125rem; }
.learn-cert-body { margin-top: var(--sp-4); color: var(--ink-2); line-height: 1.8; }
.learn-cert-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; position: relative; }
.learn-cert-grid > div { padding: var(--sp-3) var(--sp-4); border-bottom: 1px solid var(--line); }
.learn-cert-grid > div:nth-child(odd) { border-right: 1px solid var(--line); }
.learn-cert-grid > div:nth-last-child(-n+2) { border-bottom: 0; }
.learn-cert-grid dt { display: flex; align-items: center; gap: .375rem; font-size: var(--fs-sm); color: var(--ink-3); font-weight: 650; }
.learn-cert-grid dt .ic { color: var(--accent); }
.learn-cert-grid dd { font-weight: 700; margin-top: .125rem; }
.learn-cert-foot { display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); flex-wrap: wrap; margin-top: var(--sp-5); position: relative; }
.learn-cert-sign { display: inline-flex; align-items: center; gap: var(--sp-2); font-weight: 800; font-size: var(--fs-lg); }
.learn-cert-seal { display: inline-grid; place-items: center; width: 2.75rem; height: 2.75rem; border-radius: 50%; background: var(--accent-soft); color: var(--accent-ink); }
.learn-cert-seal .ic { width: 1.5rem; height: 1.5rem; }

/* ── Q&A ── */
.learn-qlist, .learn-rvlist { display: grid; gap: var(--sp-3); }
.learn-qitem { padding: var(--sp-4) var(--sp-5); background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.learn-qitem:hover { border-color: var(--line-strong); }
.learn-q-course { display: inline-flex; align-items: center; gap: .25rem; }
.learn-q-title { font-size: var(--fs-lg); margin-top: var(--sp-2); }
.learn-q-title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.learn-q-sum { color: var(--ink-2); margin-top: .25rem; }
.learn-q-meta { display: flex; flex-wrap: wrap; gap: .25rem var(--sp-3); margin-top: var(--sp-2); align-items: center; }
.learn-q-h { font-size: var(--fs-h4); margin-top: var(--sp-2); }
.learn-q-body { margin-top: var(--sp-4); line-height: 1.8; color: var(--ink); }
.learn-q-ans-meta { display: flex; align-items: center; gap: .375rem; }
.learn-q-actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; }
.learn-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--sp-2); margin-top: var(--sp-4); }
.learn-gallery img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--r-sm); border: 1px solid var(--line); }
.learn-thread { display: grid; gap: var(--sp-3); margin-top: var(--sp-3); }
.learn-msg { padding: var(--sp-4); border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
.learn-msg.is-inst { background: var(--accent-soft); border-color: var(--accent-soft); }
.learn-msg-head { display: flex; flex-wrap: wrap; gap: var(--sp-2); align-items: center; }
.learn-msg-body { margin-top: var(--sp-2); line-height: 1.75; }
.learn-checklist { display: grid; gap: var(--sp-2); font-size: var(--fs-sm); }
.learn-checklist li { display: flex; gap: var(--sp-2); align-items: flex-start; }
.learn-checklist .ic { color: var(--accent); margin-top: .125rem; }

/* ── 폼 ── */
.learn-form { padding: var(--sp-5); }
.learn-ta { min-height: 12rem; }
.learn-form-foot { justify-content: flex-end; border-top: 1px solid var(--line); padding-top: var(--sp-4); }
.learn-file { padding: .5rem; }
.learn-file-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--sp-2); }
.learn-file-list:empty { display: none; }
.learn-file-list li { display: flex; align-items: center; gap: var(--sp-2); padding: .4rem .4rem .4rem .75rem; border: 1px solid var(--line); border-radius: var(--r-sm); background: var(--surface-3); font-size: var(--fs-sm); min-width: 0; }
.learn-file-list .grow { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.learn-att { display: grid; gap: var(--sp-2); margin-bottom: var(--sp-2); }
.learn-att li { display: flex; align-items: center; gap: var(--sp-3); padding: var(--sp-2); border: 1px solid var(--line); border-radius: var(--r-sm); }
.learn-att img { width: 6rem; height: 4rem; object-fit: cover; border-radius: .375rem; flex: none; }
.learn-att .grow { display: flex; flex-direction: column; min-width: 0; }
.learn-att-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 650; }
.learn-att-del { min-height: auto; padding: 0; }
.learn-fs { border: 0; padding: 0; margin: 0; min-width: 0; }

/* 별점 고르기 */
.learn-rate-row { display: flex; align-items: center; gap: var(--sp-4); flex-wrap: wrap; }
.learn-stars-in { display: inline-flex; gap: .125rem; }
.learn-star { position: relative; display: grid; place-items: center; width: var(--tap); height: var(--tap); border-radius: var(--r-sm); cursor: pointer; color: var(--line-strong); }
.learn-star input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.learn-star .ic { width: 2rem; height: 2rem; }
.learn-star.is-on { color: var(--star); }
.learn-star.is-on .ic { fill: currentColor; }
.learn-star:has(input:focus-visible) { box-shadow: var(--focus); }
.learn-rate-label { color: var(--ink-2); }
.learn-rate[aria-invalid="true"] .learn-stars-in { outline: 2px solid var(--danger); outline-offset: .125rem; border-radius: var(--r-sm); }

/* ── 리뷰 ── */
.learn-rvitem { display: flex; gap: var(--sp-4); align-items: flex-start; padding: var(--sp-4) var(--sp-5); background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); }
.learn-rvitem.is-writable { border-style: dashed; border-color: var(--accent); }
.learn-rv-title { font-size: var(--fs-lg); }
.learn-rv-title a:hover { text-decoration: underline; text-underline-offset: 3px; }
.learn-rv-body { margin-top: var(--sp-2); color: var(--ink-2); line-height: 1.75; }
.learn-rv-score { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-h3); margin-top: var(--sp-2); }
.learn-rv-score .stars .ic { width: 1.5rem; height: 1.5rem; }
.learn-myrv-act { display: flex; flex-direction: column; gap: var(--sp-2); flex: none; }
.learn-myrv-act .btn { width: 100%; }

/* ── 반응형 ── */
@media (max-width: 960px) {
  .learn-two { grid-template-columns: minmax(0, 1fr); }
  .learn-side { position: static; }
}
@media (max-width: 760px) {
  /* 표 → 카드 */
  .learn-table-wrap { border: 0; background: none; overflow: visible; }
  .learn-table { min-width: 0; }
  .learn-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .learn-table, .learn-table tbody, .learn-table tr, .learn-table th, .learn-table td { display: block; width: 100%; }
  .learn-table tr { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: var(--sp-3) var(--sp-4); margin-bottom: var(--sp-3); }
  .learn-table tbody tr:hover { background: var(--surface); }
  .learn-table th, .learn-table td { border: 0; padding: var(--sp-1) 0; }
  .learn-hide-m { display: none !important; }
  .learn-m-only { display: block; }
  .learn-m-label { display: inline; color: var(--ink-3); }
  .learn-actions { justify-content: stretch; margin-top: var(--sp-2); }
  .learn-actions .btn { flex: 1 1 auto; }
  .learn-toolbar .learn-sort { width: 100%; }
  .learn-sort .select { flex: 1; }
  .learn-facts { grid-template-columns: 1fr; }
  .learn-nav-row { grid-template-columns: 1fr; }
  .learn-cert-doc { padding: var(--sp-5) var(--sp-4); }
  .learn-cert-title h2 { font-size: var(--fs-h2); letter-spacing: .2em; }
  .learn-cert-grid { grid-template-columns: 1fr; }
  .learn-cert-grid > div:nth-child(odd) { border-right: 0; }
  .learn-cert-grid > div:nth-last-child(2) { border-bottom: 1px solid var(--line); }
  .learn-rvitem { flex-direction: column; }
  .learn-rvitem .learn-thumb-sm { width: 100%; flex-basis: auto; }
  .learn-rvitem .learn-thumb-sm .thumb-label { display: block; }
  .learn-myrv-act { flex-direction: row; width: 100%; }
  .learn-myrv-act > * { flex: 1; }
  .learn-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .learn-file-list { grid-template-columns: 1fr; }
  .learn-sticky-m { position: sticky; bottom: 0; background: var(--surface); margin: 0 calc(var(--sp-5) * -1) calc(var(--sp-5) * -1); padding: var(--sp-3) var(--sp-5); z-index: 5; }
  .learn-sticky-m .btn { flex: 1; }
  .learn-form { padding: var(--sp-4); }
}

/* ── 인쇄: 수료증 문서만 ── */
@media print {
  .site-header, .site-footer, .toasts, .no-print, .learn-side, dialog { display: none !important; }
  body { background: var(--surface); }
  .main, .wrap { padding: 0 !important; max-width: none !important; }
  .learn-two { display: block; }
  .learn-cert-doc { box-shadow: none; border-color: var(--line-strong); break-inside: avoid; }
  .learn-cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  @page { size: A4 landscape; margin: 1.2cm; }
}