/* Course sales: open rows, square posters and a quiet purchase area. */
:is(.courses-catalog, .course-detail-page) {
  --sales-ink: var(--vnu-ink, #14372a);
  --sales-copy: var(--vnu-copy, #365548);
  --sales-muted: var(--vnu-muted, #5f746a);
  --sales-line: var(--vnu-green-line, #d8e6de);
  --session-nav-radius: 0px;
  --payment-channel-radius: 0px;
  background: var(--vnu-paper, #fff);
  color: var(--sales-ink);
  font-family: var(--font-body, 'Geist', 'Segoe UI', sans-serif);
  font-size: 16px;
  line-height: 1.65;
}
:is(.courses-catalog, .course-detail-page) .site-container { width: min(1240px, calc(100% - 64px)); }
:is(.courses-catalog, .course-detail-page) .site-nav { position: relative; inset: auto; padding: 0; border-bottom: 1px solid var(--sales-line); background: #fff; }
:is(.courses-catalog, .course-detail-page) .site-nav-inner { min-height: 80px; padding: 0; border: 0; border-radius: 0; background: #fff; box-shadow: none; backdrop-filter: none; }
:is(.courses-catalog, .course-detail-page) .site-brand { color: var(--sales-ink); font-size: 25px; }
:is(.courses-catalog, .course-detail-page) .site-actions > .session-login { display: inline-flex; }
:is(.courses-catalog, .course-detail-page) .site-nav-links { gap: 28px; }
:is(.courses-catalog, .course-detail-page) .site-nav-links > a,
:is(.courses-catalog, .course-detail-page) .contact-menu > summary { padding: 12px 0; color: var(--sales-muted); background: transparent; font-size: 16px; font-weight: 500; }
:is(.courses-catalog, .course-detail-page) .site-nav-links > a[aria-current],
:is(.courses-catalog, .course-detail-page) .site-nav-links > a:hover { color: var(--vnu-green); }
:is(.courses-catalog, .course-detail-page) .site-button,
.courses-catalog .course-footer .product-button { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; padding: 11px 22px; border: 1px solid var(--vnu-green); border-radius: 0; color: #fff; background: var(--vnu-green); box-shadow: none; font-size: 15px; font-weight: 650; line-height: 1.5; transition: background .2s ease; }
:is(.courses-catalog, .course-detail-page) .site-button:hover,
.courses-catalog .course-footer .product-button:hover { background: var(--vnu-green-dark); color: #fff; }
:is(.courses-catalog, .course-detail-page) .site-menu { min-width: 44px; min-height: 44px; border-radius: 0; }
:is(.courses-catalog, .course-detail-page) .contact-menu-panel,
:is(.courses-catalog, .course-detail-page) .contact-menu-panel a { border-radius: 0; }
.skip-link { position: absolute; top: -100px; left: 16px; z-index: 100; background: #007a46; color: #fff; padding: 12px; }
.skip-link:focus { top: 10px; }

/* Detail: the title and poster share an axis; the purchase area is not sticky. */
.course-detail-page .detail-hero { margin: 0; padding: 64px 0 80px; border: 0; background: var(--vnu-canvas); }
.course-detail-page .detail-grid { grid-template-columns: minmax(0, 1fr) minmax(300px, .7fr); gap: clamp(40px, 6vw, 88px); align-items: start; }
.course-detail-page .detail-copy { min-width: 0; }
.course-detail-page .breadcrumb { margin: 0 0 20px; font-size: 14px; }
.course-detail-page .detail-copy h1 { max-width: 760px; margin: 0 0 20px; font-size: clamp(30px, 3vw, 44px); font-weight: 600; line-height: 1.18; letter-spacing: -.035em; }
.course-detail-page .detail-copy > p { max-width: 650px; margin: 0 0 32px; color: var(--sales-copy); font-size: 17px; line-height: 1.7; }
.course-detail-page .detail-course-cover { display: block; width: min(100%, 560px); height: auto; aspect-ratio: 1; object-fit: contain; }
.course-detail-page .purchase-card { position: static; margin-top: 42px; padding: 32px; border: 1px solid var(--sales-line); border-radius: 0; background: #fff; color: var(--sales-ink); box-shadow: none; }
.course-detail-page .page-kicker { color: var(--sales-muted); font-size: 14px; font-weight: 500; letter-spacing: 0; }
.course-detail-page .purchase-card .price { margin: 12px 0 24px; color: var(--sales-ink); font-size: 36px; font-weight: 600; letter-spacing: -.035em; }
.course-detail-page .purchase-list { margin-top: 28px; padding-top: 20px; border-color: var(--sales-line); }
.course-detail-page .purchase-list li { margin: 14px 0; color: var(--sales-copy); font-size: 15px; line-height: 1.55; }
.course-detail-page .detail-section { padding: 80px 0 112px; }
.course-detail-page .detail-meta { margin: 0 0 56px; padding-block: 20px; border-block: 1px solid var(--sales-line); font-size: 15px; }
.course-detail-page .detail-meta strong { color: var(--vnu-green); font-size: 18px; }
.course-detail-page .detail-section h2 { max-width: 840px; margin: 12px 0 32px; font-size: clamp(28px, 3.6vw, 42px); font-weight: 600; line-height: 1.2; }
.course-detail-page .detail-benefits { grid-template-columns: repeat(2, minmax(0, 1fr)); grid-auto-flow: dense; gap: 24px 48px; max-width: 100%; }
.course-detail-page .detail-benefits p { margin: 0; padding: 24px 0; border: 0; border-top: 1px solid var(--sales-line); border-radius: 0; background: transparent; color: var(--sales-copy); font-size: 16px; line-height: 1.7; }
:is(.courses-catalog, .course-detail-page) .site-footer { padding-top: 56px; border-top: 1px solid var(--sales-line); background: #fff; color: var(--sales-ink); }
:is(.courses-catalog, .course-detail-page) .site-footer a,
:is(.courses-catalog, .course-detail-page) .site-footer p { color: var(--sales-muted); }
:is(.courses-catalog, .course-detail-page) .site-footer h2 { color: var(--sales-ink); font-size: 16px; }
:is(.courses-catalog, .course-detail-page) .site-footer-bottom { border-color: var(--sales-line); color: var(--sales-muted); font-size: 13px; }

@media (max-width: 900px) {
  :is(.courses-catalog, .course-detail-page) .site-nav-links { top: 80px; padding: 20px 32px; border: 0; border-bottom: 1px solid var(--sales-line); border-radius: 0; background: #fff; }
  .course-detail-page .detail-grid { grid-template-columns: minmax(0, 1fr); gap: 36px; }
  .course-detail-page .purchase-card { margin-top: 0; max-width: 560px; }
}
@media (max-width: 640px) {
  :is(.courses-catalog, .course-detail-page) .site-container { width: calc(100% - 40px); }
  :is(.courses-catalog, .course-detail-page) .site-nav-inner { min-height: 76px; gap: 10px; }
  :is(.courses-catalog, .course-detail-page) .site-brand { font-size: 20px; gap: 8px; }
  :is(.courses-catalog, .course-detail-page) .site-brand img { width: 32px; height: 32px; }
  :is(.courses-catalog, .course-detail-page) .site-actions { margin-left: auto; flex-shrink: 0; }
  :is(.courses-catalog, .course-detail-page) .site-actions .site-button { min-height: 44px; padding-inline: 10px; font-size: 14px; white-space: nowrap; }
  :is(.courses-catalog, .course-detail-page) .site-nav-links { top: 76px; padding-inline: 20px; }
  .course-detail-page .detail-hero { padding: 40px 0 56px; }
  .course-detail-page .purchase-card { padding: 24px; }
  .course-detail-page .detail-section { padding-block: 56px 80px; }
  .course-detail-page .detail-benefits { grid-template-columns: minmax(0, 1fr); gap: 0; }
}
@media (max-width: 380px) {
  :is(.courses-catalog, .course-detail-page) .site-container { width: calc(100% - 32px); }
  :is(.courses-catalog, .course-detail-page) .site-nav-inner { gap: 6px; }
  :is(.courses-catalog, .course-detail-page) .site-brand { font-size: 18px; }
  :is(.courses-catalog, .course-detail-page) .site-actions .site-button { padding-inline: 8px; font-size: 13px; }
}
@media (prefers-reduced-motion: reduce) {
  :is(.courses-catalog, .course-detail-page) * { scroll-behavior: auto !important; transition: none !important; }
}

/* Public catalog: compact controls and responsive course cards. */
.courses-catalog {
  background: var(--vnu-canvas, #f5f9f7);
  color: var(--vnu-ink, #14372a);
  font-family: var(--font-body, 'Geist', 'Segoe UI', sans-serif);
  font-size: var(--type-body);
  line-height: 1.65;
}
.courses-catalog .site-container { width: min(1240px, calc(100% - 64px)); }
.courses-catalog .site-nav { position: relative; inset: auto; padding: 0; border-bottom: 1px solid var(--border); background: var(--surface); }
.courses-catalog .site-nav-inner { min-height: 78px; padding: 0; border: 0; border-radius: 0; background: var(--surface); box-shadow: none; backdrop-filter: none; }
.courses-catalog .site-brand { color: var(--text-primary); font-size: 25px; letter-spacing: 0; }
.courses-catalog .site-nav-links { gap: 30px; }
.courses-catalog .site-nav-links > a,
.courses-catalog .contact-menu > summary { color: var(--text-secondary); background: none; padding: 12px 0; font-size: 17px; font-weight: 500; }
.courses-catalog .site-nav-links > a[aria-current],
.courses-catalog .site-nav-links > a:hover { color: var(--brand-700); }
.courses-catalog .site-button { min-height: 44px; border-radius: 6px; background: var(--brand-700); color: #fff; border: 1px solid var(--brand-700); box-shadow: none; padding: 10px 18px; font-size: 16px; }
.courses-catalog .site-menu { width: 44px; height: 44px; flex-shrink: 0; color: var(--text-primary); }

/* Keep search and filters above the full-width results. */
.courses-catalog .catalog-layout { display: block; padding-block: 32px 72px; }
.courses-catalog .catalog-index {
  position: static;
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(260px, 1.4fr) minmax(170px, .7fr) minmax(170px, .7fr);
  align-items: end;
  gap: 20px;
  padding: 0 0 28px;
}
.courses-catalog .catalog-index-heading { min-width: 0; }
.courses-catalog .catalog-index h1 { margin: 0; color: var(--text-primary); font-size: 32px; font-weight: 650; line-height: 1.2; letter-spacing: 0; }
.courses-catalog .catalog-index p { margin: 8px 0 0; color: var(--text-secondary); font-size: 14px; }
.courses-catalog .catalog-index p strong { color: var(--brand-700); }
.courses-catalog .catalog-filters { display: grid; min-width: 0; gap: 6px; }
.courses-catalog .catalog-index label { display: block; grid-column: auto; grid-row: auto; align-self: auto; margin: 0; color: var(--vnu-copy); font-size: 14px; font-weight: 600; }
.courses-catalog .catalog-index select {
  grid-column: auto;
  grid-row: auto;
  width: 100%;
  max-width: none;
  min-width: 0;
  min-height: 46px;
  margin: 0;
  padding: 10px 32px 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--text-primary);
  font-size: 14px;
}
.courses-catalog .catalog-search-panel { min-width: 0; max-width: none; margin: 0; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.courses-catalog .catalog-search-panel > label { margin: 0 0 6px; }
.courses-catalog .catalog-search-panel > div {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 8px;
  padding: 0 0 0 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  box-shadow: none;
}
.courses-catalog .catalog-search-panel > div:focus-within { border-color: var(--brand-700); outline: 3px solid rgba(0, 122, 70, .16); outline-offset: 2px; }
.courses-catalog .catalog-search-panel > div > i { color: var(--text-secondary); }
.courses-catalog .catalog-search-panel input { width: 100%; min-width: 0; padding: 10px 0; border: 0; background: transparent; color: var(--text-primary); font-size: 16px; outline: 0; }
.courses-catalog .catalog-search-panel input::placeholder { color: var(--text-secondary); }
.courses-catalog .catalog-search-panel .site-button { grid-column: auto; grid-row: auto; width: 44px; height: 44px; padding: 0; border-radius: 0 5px 5px 0; font-size: 16px; transform: none; }

.courses-catalog .catalog-groups { display: grid; gap: 40px; }
.courses-catalog .catalog-school-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 20px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
.courses-catalog .catalog-school-identity { min-width: 0; }
.courses-catalog .catalog-school-kicker { display: block; margin-bottom: 4px; color: var(--brand-700); font-size: 14px; font-weight: 650; letter-spacing: 0; }
.courses-catalog .catalog-school-heading h3 { margin: 0; color: var(--text-primary); font-size: 24px; font-weight: 620; line-height: 1.35; letter-spacing: 0; }
.courses-catalog .catalog-school-heading p { flex: none; margin: 0; color: var(--text-secondary); font-size: 14px; }
.courses-catalog .catalog-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-flow: row; align-items: stretch; gap: 20px; padding: 0; }
.courses-catalog .course-card,
.courses-catalog .course-card:last-child:nth-child(odd) {
  grid-column: auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-width: 0;
  min-height: 0;
  gap: 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: none;
  transition: border-color .2s ease;
}
.courses-catalog .course-card:hover { transform: none; border-color: var(--brand-700); background: var(--surface); box-shadow: none; }
.courses-catalog .course-thumb { position: relative; flex: none; display: flex; align-items: center; justify-content: center; width: 100%; height: 192px; min-height: 0; padding: 0; aspect-ratio: auto; overflow: hidden; contain: paint; border-radius: 0; border-bottom: 1px solid var(--border); background: var(--surface-soft); }
.courses-catalog .course-thumb::before,
.courses-catalog .course-thumb::after,
.courses-catalog .course-visual-code { display: none; }
.courses-catalog .course-thumb > img { position: static; display: block; width: 100%; max-width: 100%; height: 100%; aspect-ratio: auto; object-fit: cover; object-position: center top; transform: none; translate: none; transition: none; }
.courses-catalog .course-card:hover .course-thumb > img { transform: none; filter: none; }
.courses-catalog .course-body { display: flex; flex: 1; flex-direction: column; align-items: stretch; min-width: 0; padding: 16px; }
.courses-catalog .course-identity { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 4px 12px; min-width: 0; }
.courses-catalog .course-code { min-width: 0; color: var(--text-secondary); font-size: 14px; font-weight: 500; line-height: 1.5; overflow-wrap: anywhere; }
.courses-catalog .course-body h4 { min-height: 0; margin: 8px 0 14px; color: var(--text-primary); font-size: 19px; font-weight: 650; line-height: 1.4; letter-spacing: 0; overflow-wrap: anywhere; }
.courses-catalog .course-body > .text-sm { display: none; }
.courses-catalog .course-meta { display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 12px; margin: 0 0 16px; padding: 0; border: 0; color: var(--text-secondary); font-size: 14px; line-height: 1.5; }
.courses-catalog .course-stat { display: flex; align-items: baseline; gap: 4px; min-width: 0; max-width: 100%; padding: 0; border: 0; }
.courses-catalog .course-stat dt { color: var(--text-secondary); font-size: 14px; line-height: 1.5; white-space: nowrap; }
.courses-catalog .course-stat dd { order: -1; margin: 0; color: var(--text-primary); font-size: 16px; font-weight: 650; line-height: 1.5; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.courses-catalog .course-rating { display: inline-flex; flex: none; align-items: center; gap: 6px; margin: 0; color: var(--brand-700); font-size: 14px; font-weight: 500; line-height: 1.5; }
.courses-catalog .course-rating i { display: inline-block; font-size: 12px; }
.courses-catalog .course-footer { display: flex; flex-direction: column; flex-wrap: nowrap; align-items: stretch; justify-content: start; gap: 14px; margin-top: auto; padding-top: 14px; border-top: 1px solid var(--border); }
.courses-catalog .course-commerce-meta { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px; }
.courses-catalog .course-price { color: var(--text-primary); font-size: 22px; font-weight: 650; line-height: 1.3; white-space: normal; overflow-wrap: anywhere; }
.courses-catalog .course-commerce-meta small { display: block; color: var(--text-secondary); font-size: 14px; line-height: 1.5; }
.courses-catalog .course-footer .product-button { justify-content: center; width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid var(--brand-700); border-radius: 6px; background: var(--brand-700); color: #fff; box-shadow: none; font-size: 14px; font-weight: 650; text-align: center; white-space: normal; }
.courses-catalog .course-footer .product-button:hover { background: var(--brand-800); }
.courses-catalog .course-footer .course-locked { color: var(--text-secondary); background: var(--surface-soft); border-color: var(--border); }
.courses-catalog .course-footer.has-payment-choices { align-items: stretch; width: 100%; max-width: none; gap: 12px; }
.courses-catalog .course-payment-choice { flex: none; width: 100%; min-width: 0; }
.courses-catalog .payment-channels.is-compact { margin-top: 0; }
.courses-catalog .payment-channels.is-compact .payment-channels__intro { font-size: 14px; line-height: 1.5; }
.courses-catalog .payment-channels.is-compact .payment-channel { min-height: 44px; border-radius: 6px; }
.courses-catalog .payment-channels.is-compact .payment-channel span { font-size: 12px; }
.courses-catalog .payment-channels.is-compact .payment-channel strong { font-size: 14px; }
.courses-catalog .catalog-loading { min-height: 240px; border-radius: 8px; }
.courses-catalog .catalog-error { border: 0; border-radius: 0; box-shadow: none; background: transparent; }
.courses-catalog .site-footer { background: var(--surface); border-top: 1px solid var(--border); color: var(--text-primary); padding-top: 48px; }
.courses-catalog .site-footer a,
.courses-catalog .site-footer p { color: var(--text-secondary); }
.courses-catalog .site-footer h2 { color: var(--text-primary); font-size: 16px; }
.courses-catalog .site-footer p,
.courses-catalog .site-footer-grid > div > a:not(.site-brand) { font-size: 15px; line-height: 1.85; }
.courses-catalog .site-footer-bottom { color: var(--text-secondary); border-color: var(--border); font-size: 14px; }
.courses-catalog .course-thumb-placeholder { display: grid; align-content: center; justify-items: center; gap: 16px; color: var(--brand-700); }
.courses-catalog .course-thumb-placeholder > i { display: block; font-size: 48px; }
.courses-catalog .course-thumb-placeholder > span { font-size: 16px; letter-spacing: 0; }

@media (max-width: 1279px) {
  .courses-catalog .catalog-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .courses-catalog .catalog-index { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 24px; }
}
@media (max-width: 959px) {
  .courses-catalog .catalog-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .courses-catalog .site-nav-links { top: 78px; padding: 18px 20px; border-radius: 0; background: var(--surface); border: 0; border-bottom: 1px solid var(--border); }
  .courses-catalog .site-nav-links > a,
  .courses-catalog .contact-menu > summary { font-size: 16px; }
}
@media (max-width: 640px) {
  .courses-catalog .site-container { width: calc(100% - 40px); }
  .courses-catalog .site-nav-inner { min-height: 76px; gap: 12px; }
  .courses-catalog .site-brand { font-size: 21px; }
  .courses-catalog .site-actions { margin-left: auto; flex-shrink: 0; }
  .courses-catalog .site-actions .site-button { white-space: nowrap; gap: 6px; font-size: 14px; padding: 9px 12px; }
  .courses-catalog .site-nav-links { top: 76px; }
  .courses-catalog .catalog-layout { padding-block: 24px 48px; }
  .courses-catalog .catalog-index { gap: 16px 12px; padding-bottom: 24px; }
  .courses-catalog .catalog-index-heading,
  .courses-catalog .catalog-search-panel { grid-column: 1 / -1; }
  .courses-catalog .catalog-index h1 { font-size: 28px; }
  .courses-catalog .catalog-school-heading { flex-direction: column; align-items: start; gap: 4px; }
  .courses-catalog .catalog-school-heading h3 { font-size: 22px; }
  .courses-catalog .catalog-groups { gap: 32px; }
  .courses-catalog .course-body { padding: 16px; }
}
@media (max-width: 599px) {
  .courses-catalog .catalog-grid { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 380px) {
  .courses-catalog .site-container { width: calc(100% - 32px); }
  .courses-catalog .site-brand { font-size: 18px; gap: 8px; }
  .courses-catalog .site-brand img { width: 30px; height: 30px; }
  .courses-catalog .site-nav-inner { gap: 8px; }
  .courses-catalog .site-actions .site-button { padding-inline: 8px; }
  .courses-catalog .site-actions .site-button span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .courses-catalog *, .auth-page * { scroll-behavior: auto !important; transition: none !important; }
}


/* Authentication surface remains independent. */
.auth-page { padding: 0; background: radial-gradient(ellipse at 50% 30%, #f1f8f3, #fff 65%); }
.auth-page .auth-wrap { max-width: 460px; width: calc(100% - 48px); padding: 80px 0; }
.auth-page .auth-card { margin-top: 52px; padding: 0; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
.auth-page .auth-card h1 { font-size: 48px; font-weight: 550; letter-spacing: -.04em; }
.auth-page .auth-card > p { font-size: 18px; line-height: 1.75; color: #64756c; }
.auth-page .google-auth-btn { border-radius: 5px; font-size: 18px; min-height: 56px; box-shadow: none; }
.auth-page .auth-security-note { background: transparent; border: 0; padding: 0; margin-top: 16px; color: #64756c; font-size: 15px; line-height: 1.7; }
.auth-page .auth-links { line-height: 1.8; font-size: 16px; }
.auth-page .auth-wrap > .site-brand { font-size: 26px; }
@media (max-width: 640px) {
  .auth-page .auth-wrap { padding-top: 48px; }
  .auth-page .auth-card h1 { font-size: 40px; }
  .auth-page .google-auth-btn { font-size: 16px; padding-inline: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .auth-page * { scroll-behavior: auto !important; transition: none !important; }
}