/* edu-video-ui.css
   Spójne style dla strony materiałów edukacyjnych i dedykowanych stron filmów.
   Nawiązują do kart i paneli używanych w innych częściach aplikacji.
*/

:root {
  --edu-card-radius: 24px;
  --edu-card-shadow: 0 16px 42px rgba(15, 45, 42, 0.08);
  --edu-border: rgba(22, 76, 71, 0.10);
  --edu-border-strong: rgba(0, 131, 141, 0.18);
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(244,251,250,0.96));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,251,251,0.98));
  --edu-text-strong: #163638;
  --edu-text: #355a59;
  --edu-text-muted: #567375;
}

.liquid-ios26 header {
  position: static !important;
}

.site-brand {
  margin: 0;
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 700;
  color: var(--text);
}

.edu-shell,
.edu-watch-page {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-block: 1rem 2rem;
}

.edu-watch-page {
  max-width: 960px;
  margin: 0 auto;
  padding-inline: 0.5rem;
}

.edu-hero,
.edu-resource-card,
.edu-presentation-card,
.edu-video-shell,
.edu-info-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-radius: var(--edu-card-radius);
}

.edu-hero.card,
.edu-resource-card.card,
.edu-presentation-card.card,
.edu-video-shell.card,
.edu-info-card.card {
  background: var(--edu-surface);
  border: 1px solid var(--edu-border);
  box-shadow: var(--edu-card-shadow);
}

.edu-hero::before,
.edu-resource-card::before,
.edu-presentation-card::before,
.edu-video-shell::before,
.edu-info-card::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at top right, rgba(0, 168, 181, 0.12), transparent 34%),
    radial-gradient(circle at bottom left, rgba(4, 120, 87, 0.08), transparent 32%);
  z-index: -1;
}

.edu-hero {
  padding: 1.35rem 1.4rem;
}

.edu-kicker,
.edu-card-badge,
.edu-chip,
.edu-meta-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  border-radius: 999px;
  white-space: nowrap;
}

.edu-kicker {
  align-self: flex-start;
  padding: 0.48rem 0.82rem;
  background: rgba(255,255,255,0.90);
  border: 1px solid var(--edu-border-strong);
  color: #0f4b48;
  font-weight: 800;
  font-size: 0.92rem;
  box-shadow: 0 8px 24px rgba(15, 45, 42, 0.05);
}

.edu-kicker-icon,
.edu-chip-icon,
.edu-inline-icon,
.edu-meta-icon {
  width: 1rem;
  height: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  line-height: 0;
}

.edu-kicker-icon svg,
.edu-chip-icon svg,
.edu-inline-icon svg,
.edu-meta-icon svg {
  width: 100%;
  height: 100%;
  display: block;
}

.edu-title {
  margin: 0.85rem 0 0.7rem;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.14;
  color: var(--edu-text-strong);
  text-wrap: balance;
}

.edu-lead {
  margin: 0;
  max-width: 74ch;
  color: var(--edu-text);
  line-height: 1.7;
  text-wrap: pretty;
}

.edu-chip-row,
.edu-meta-row,
.resource-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.edu-chip-row {
  margin-top: 1rem;
}

.edu-chip,
.edu-meta-pill {
  padding: 0.46rem 0.8rem;
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(22, 76, 71, 0.10);
  color: #0f4b48;
  font-weight: 700;
  box-shadow: 0 8px 24px rgba(15, 45, 42, 0.04);
}

.edu-chip {
  font-size: 0.92rem;
}

.edu-meta-pill {
  font-size: 0.88rem;
}

.edu-section-head {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
  text-align: center;
}

.edu-section-title {
  width: 100%;
  margin: 0;
  text-align: center;
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  color: var(--edu-text-strong);
}

.edu-section-copy {
  margin: 0;
  color: var(--edu-text-muted);
  line-height: 1.62;
  max-width: 72ch;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.1rem;
  align-items: stretch;
}

.presentation-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
}

.edu-resource-card,
.edu-presentation-card,
.edu-video-shell,
.edu-info-card {
  padding: 1rem 1.05rem 1.1rem;
}

.edu-resource-card,
.edu-presentation-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.edu-card-top {
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}

.edu-card-badge {
  align-self: flex-start;
  padding: 0.36rem 0.72rem;
  background: rgba(0, 168, 181, 0.12);
  border: 1px solid rgba(0, 168, 181, 0.18);
  color: #0f6665;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.edu-card-title,
.edu-presentation-card h3,
.edu-info-card h2 {
  margin: 0;
  color: var(--edu-text-strong);
}

.edu-card-title {
  font-size: 1.14rem;
  line-height: 1.32;
}

.edu-card-description,
.edu-presentation-card p {
  margin: 0;
  color: #476766;
  line-height: 1.66;
}

.edu-video-frame {
  padding: 0.45rem;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(0,131,141,0.08), rgba(255,255,255,0.92));
  border: 1px solid rgba(0,131,141,0.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
}

.edu-video-frame video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  background: #000;
}

.edu-video-shell--portrait {
  max-width: 520px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.edu-video-shell--portrait .edu-video-frame {
  box-sizing: border-box;
  width: min(100%, 478px);
  margin-inline: auto;
  aspect-ratio: 1365 / 2048;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 28px;
}

.edu-video-shell--portrait .edu-video-frame video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 22px;
}

.resource-actions {
  margin-top: auto;
}

.resource-actions.center {
  justify-content: center;
}

.resource-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 46px;
  padding: 0.8rem 1.1rem;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
  text-align: center;
  border: 1px solid rgba(0,131,141,0.18);
  background: rgba(255,255,255,0.84);
  color: var(--edu-text-strong);
  box-shadow: 0 10px 22px rgba(15, 45, 42, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.resource-button:hover,
.resource-button:focus-visible {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(15, 45, 42, 0.12);
  border-color: rgba(0,131,141,0.28);
}

.resource-button.primary {
  background: linear-gradient(180deg, rgba(0,176,166,0.16), rgba(0,131,141,0.10));
}

.resource-button.secondary {
  background: rgba(255,255,255,0.72);
}

.breadcrumbs {
  margin: 0;
  font-size: 0.95rem;
  color: var(--edu-text-muted);
}

.breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  text-decoration: underline;
}

.edu-info-card h2 {
  font-size: 1.18rem;
  margin-bottom: 0.9rem;
}

.chapter-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.65rem;
}

.chapter-list li {
  margin: 0;
}

.chapter-list a {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--edu-text-strong);
  padding: 0.82rem 0.9rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.88);
  border: 1px solid rgba(22, 76, 71, 0.10);
  box-shadow: 0 8px 24px rgba(15, 45, 42, 0.04);
  transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.chapter-list a:hover,
.chapter-list a:focus-visible {
  transform: translateY(-1px);
  background: rgba(255,255,255,0.96);
  border-color: rgba(0,131,141,0.22);
}

.chapter-time {
  min-width: 3.8rem;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
}

.notice {
  margin: 0.95rem 0 0;
  font-size: 0.92rem;
  color: var(--edu-text-muted);
  line-height: 1.55;
}

.faq-section[hidden] {
  display: none !important;
}


.presentation-heading {
  margin: 0;
  font-size: clamp(1.25rem, 2.6vw, 1.75rem);
  color: var(--edu-text-strong);
}

.faq-container {
  background: var(--edu-surface-soft);
  border: 1px solid var(--edu-border);
  border-radius: var(--edu-card-radius);
  box-shadow: var(--edu-card-shadow);
  padding: 1rem;
}

.faq-item + .faq-item {
  margin-top: 0.8rem;
}

.faq-question {
  all: unset;
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  cursor: pointer;
  padding: 0.9rem 1rem;
  border-radius: 16px;
  box-sizing: border-box;
  background: rgba(255,255,255,0.82);
  border: 1px solid rgba(22, 76, 71, 0.10);
  color: var(--edu-text-strong);
  font-size: 1rem;
  font-weight: 700;
}

.faq-question:hover {
  background: rgba(255,255,255,0.92);
}

.faq-question::after {
  content: "+";
  font-size: 1.25rem;
  transition: transform 0.25s ease;
}

.faq-item.open .faq-question::after {
  content: "–";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, margin-top 0.35s ease;
  padding: 0 1rem;
}

.faq-item.open .faq-answer {
  max-height: 240px;
  margin-top: 0.5rem;
}

.faq-answer p {
  margin: 0 0 0.5rem;
  line-height: 1.6;
  color: var(--edu-text);
}


@media (max-width: 900px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .edu-shell,
  .edu-watch-page {
    gap: 1rem;
    padding-block: 0.85rem 1.6rem;
  }

  .edu-hero,
  .edu-resource-card,
  .edu-presentation-card,
  .edu-video-shell,
  .edu-info-card {
    border-radius: 20px;
  }

  .edu-hero,
  .edu-resource-card,
  .edu-presentation-card,
  .edu-video-shell,
  .edu-info-card {
    padding: 0.95rem;
  }

  .edu-title {
    margin-top: 0.75rem;
    font-size: clamp(1.4rem, 6vw, 1.9rem);
  }

  .edu-lead,
  .edu-card-description,
  .edu-presentation-card p {
    line-height: 1.6;
  }

  .resource-button {
    width: 100%;
  }

  .chapter-list a {
    padding: 0.75rem 0.82rem;
  }

  .chapter-time {
    min-width: 3.5rem;
  }
}

.liquid-ios26 .edu-kicker,
.liquid-ios26 .edu-chip,
.liquid-ios26 .edu-meta-pill,
.liquid-ios26 .chapter-list a,
.liquid-ios26 .resource-button {
  backdrop-filter: blur(10px) saturate(120%);
  -webkit-backdrop-filter: blur(10px) saturate(120%);
}


/* ================================================================
 * Motyw strony „Materiały edukacyjne”
 *
 * Ten widok korzysta z własnego arkusza, więc bez tych reguł część
 * komponentów nadpisywała ustawienia „Wygląd aplikacji”. Poniżej
 * spinamy lokalne karty, badge’e, przyciski, FAQ i footer z klasami
 * dark-bg-level / glass-level / high-contrast-level dodawanymi na body.
 * ================================================================ */
body.edu-page {
  --edu-card-border-width: 1px;
  --edu-control-border-width: 1px;
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(244,251,250,0.96));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(247,251,251,0.98));
  --edu-surface-elevated: rgba(255,255,255,0.90);
  --edu-card-shadow: 0 16px 42px rgba(15, 45, 42, 0.08);
  --edu-border: rgba(22, 76, 71, 0.10);
  --edu-border-strong: rgba(0, 131, 141, 0.18);
  --edu-kicker-bg: rgba(255,255,255,0.90);
  --edu-kicker-text: #0f4b48;
  --edu-kicker-shadow: 0 8px 24px rgba(15, 45, 42, 0.05);
  --edu-chip-bg: rgba(255,255,255,0.88);
  --edu-chip-text: #0f4b48;
  --edu-chip-shadow: 0 8px 24px rgba(15, 45, 42, 0.04);
  --edu-accent-bg: rgba(0, 168, 181, 0.12);
  --edu-accent-border: rgba(0, 168, 181, 0.18);
  --edu-accent-text: #0f6665;
  --edu-button-bg: rgba(255,255,255,0.84);
  --edu-button-hover-bg: rgba(255,255,255,0.94);
  --edu-button-border: rgba(0,131,141,0.18);
  --edu-button-shadow: 0 10px 22px rgba(15, 45, 42, 0.08);
  --edu-button-hover-shadow: 0 14px 28px rgba(15, 45, 42, 0.12);
  --edu-primary-bg: linear-gradient(180deg, rgba(0,176,166,0.16), rgba(0,131,141,0.10));
  --edu-primary-border: rgba(0,131,141,0.24);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.08), rgba(255,255,255,0.92));
  --edu-frame-border: rgba(0,131,141,0.12);
  --edu-frame-shadow: inset 0 1px 0 rgba(255,255,255,0.7);
  --edu-text-strong: #163638;
  --edu-text: #355a59;
  --edu-text-muted: #567375;
  --edu-highlight-1: rgba(0, 168, 181, 0.12);
  --edu-highlight-2: rgba(4, 120, 87, 0.08);
  --edu-surface-backdrop: blur(14px) saturate(116%);
  --edu-control-backdrop: blur(10px) saturate(118%);
  --edu-focus-color: rgba(0,131,141,0.28);
  --edu-focus-width: 2px;
  --edu-footer-bg: rgba(250, 250, 250, 0.92);
  --edu-footer-border: rgba(22, 76, 71, 0.10);
}

body.edu-page.dark-bg-level-1 {
  --edu-card-shadow: 0 18px 46px rgba(11, 27, 33, 0.10);
  --edu-kicker-shadow: 0 10px 26px rgba(11, 27, 33, 0.07);
  --edu-chip-shadow: 0 10px 24px rgba(11, 27, 33, 0.06);
  --edu-button-shadow: 0 12px 24px rgba(11, 27, 33, 0.10);
  --edu-button-hover-shadow: 0 16px 30px rgba(11, 27, 33, 0.12);
  --edu-footer-bg: rgba(248, 250, 250, 0.94);
}

body.edu-page.dark-bg-level-2 {
  --edu-card-shadow: 0 20px 52px rgba(8, 20, 26, 0.13);
  --edu-kicker-shadow: 0 10px 28px rgba(8, 20, 26, 0.09);
  --edu-chip-shadow: 0 10px 26px rgba(8, 20, 26, 0.08);
  --edu-button-shadow: 0 14px 28px rgba(8, 20, 26, 0.13);
  --edu-button-hover-shadow: 0 18px 34px rgba(8, 20, 26, 0.15);
  --edu-border: rgba(22, 76, 71, 0.12);
  --edu-footer-bg: rgba(246, 248, 248, 0.96);
}

body.edu-page.liquid-ios26.glass-level-0 {
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.86), rgba(242,249,248,0.82));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.84), rgba(243,249,248,0.80));
  --edu-surface-elevated: rgba(255,255,255,0.80);
  --edu-kicker-bg: rgba(255,255,255,0.80);
  --edu-chip-bg: rgba(255,255,255,0.78);
  --edu-button-bg: rgba(255,255,255,0.78);
  --edu-button-hover-bg: rgba(255,255,255,0.86);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.06), rgba(255,255,255,0.84));
  --edu-border: rgba(255,255,255,0.34);
  --edu-border-strong: rgba(255,255,255,0.40);
  --edu-button-border: rgba(255,255,255,0.40);
  --edu-accent-border: rgba(255,255,255,0.40);
  --edu-frame-border: rgba(255,255,255,0.38);
  --edu-card-shadow: 0 8px 22px rgba(15, 45, 42, 0.08);
  --edu-kicker-shadow: 0 8px 22px rgba(15, 45, 42, 0.06);
  --edu-chip-shadow: 0 8px 20px rgba(15, 45, 42, 0.05);
  --edu-button-shadow: 0 8px 22px rgba(15, 45, 42, 0.08);
  --edu-button-hover-shadow: 0 12px 26px rgba(15, 45, 42, 0.10);
  --edu-surface-backdrop: blur(16px) saturate(118%);
  --edu-control-backdrop: blur(12px) saturate(118%);
  --edu-footer-bg: rgba(248, 250, 250, 0.88);
}

body.edu-page.liquid-ios26.glass-level-1 {
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.90), rgba(243,250,249,0.87));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.88), rgba(244,250,249,0.85));
  --edu-surface-elevated: rgba(255,255,255,0.84);
  --edu-kicker-bg: rgba(255,255,255,0.84);
  --edu-chip-bg: rgba(255,255,255,0.82);
  --edu-button-bg: rgba(255,255,255,0.82);
  --edu-button-hover-bg: rgba(255,255,255,0.90);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.07), rgba(255,255,255,0.88));
  --edu-border: rgba(255,255,255,0.46);
  --edu-border-strong: rgba(255,255,255,0.52);
  --edu-button-border: rgba(255,255,255,0.50);
  --edu-accent-border: rgba(255,255,255,0.50);
  --edu-frame-border: rgba(255,255,255,0.48);
  --edu-card-shadow: 0 10px 24px rgba(15, 45, 42, 0.08);
  --edu-kicker-shadow: 0 8px 24px rgba(15, 45, 42, 0.06);
  --edu-chip-shadow: 0 8px 22px rgba(15, 45, 42, 0.05);
  --edu-button-shadow: 0 10px 24px rgba(15, 45, 42, 0.08);
  --edu-button-hover-shadow: 0 14px 28px rgba(15, 45, 42, 0.10);
  --edu-surface-backdrop: blur(16px) saturate(118%);
  --edu-control-backdrop: blur(12px) saturate(118%);
  --edu-footer-bg: rgba(248, 250, 250, 0.90);
}

body.edu-page.liquid-ios26.glass-level-2 {
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.94), rgba(244,250,249,0.91));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(245,250,249,0.89));
  --edu-surface-elevated: rgba(255,255,255,0.89);
  --edu-kicker-bg: rgba(255,255,255,0.89);
  --edu-chip-bg: rgba(255,255,255,0.87);
  --edu-button-bg: rgba(255,255,255,0.87);
  --edu-button-hover-bg: rgba(255,255,255,0.94);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.08), rgba(255,255,255,0.91));
  --edu-border: rgba(255,255,255,0.58);
  --edu-border-strong: rgba(255,255,255,0.64);
  --edu-button-border: rgba(255,255,255,0.62);
  --edu-accent-border: rgba(255,255,255,0.62);
  --edu-frame-border: rgba(255,255,255,0.60);
  --edu-card-shadow: 0 10px 26px rgba(15, 45, 42, 0.10);
  --edu-kicker-shadow: 0 8px 24px rgba(15, 45, 42, 0.06);
  --edu-chip-shadow: 0 8px 22px rgba(15, 45, 42, 0.05);
  --edu-button-shadow: 0 10px 26px rgba(15, 45, 42, 0.10);
  --edu-button-hover-shadow: 0 14px 30px rgba(15, 45, 42, 0.12);
  --edu-surface-backdrop: blur(15px) saturate(116%);
  --edu-control-backdrop: blur(11px) saturate(116%);
  --edu-footer-bg: rgba(249, 251, 251, 0.92);
}

body.edu-page.liquid-ios26.glass-level-3 {
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(245,251,250,0.94));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.95), rgba(246,251,250,0.93));
  --edu-surface-elevated: rgba(255,255,255,0.93);
  --edu-kicker-bg: rgba(255,255,255,0.93);
  --edu-chip-bg: rgba(255,255,255,0.92);
  --edu-button-bg: rgba(255,255,255,0.92);
  --edu-button-hover-bg: rgba(255,255,255,0.97);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.08), rgba(255,255,255,0.94));
  --edu-border: rgba(255,255,255,0.72);
  --edu-border-strong: rgba(255,255,255,0.78);
  --edu-button-border: rgba(255,255,255,0.78);
  --edu-accent-border: rgba(255,255,255,0.78);
  --edu-frame-border: rgba(255,255,255,0.76);
  --edu-card-shadow: 0 12px 30px rgba(0, 0, 0, 0.13);
  --edu-kicker-shadow: 0 8px 24px rgba(0, 0, 0, 0.07);
  --edu-chip-shadow: 0 8px 22px rgba(0, 0, 0, 0.06);
  --edu-button-shadow: 0 12px 30px rgba(0, 0, 0, 0.13);
  --edu-button-hover-shadow: 0 16px 32px rgba(0, 0, 0, 0.15);
  --edu-surface-backdrop: blur(14px) saturate(114%);
  --edu-control-backdrop: blur(10px) saturate(114%);
  --edu-footer-bg: rgba(250, 252, 252, 0.94);
}

body.edu-page.liquid-ios26.glass-level-4 {
  --edu-surface: linear-gradient(180deg, rgba(255,255,255,0.98), rgba(246,252,251,0.96));
  --edu-surface-soft: linear-gradient(180deg, rgba(255,255,255,0.97), rgba(247,252,251,0.95));
  --edu-surface-elevated: rgba(255,255,255,0.96);
  --edu-kicker-bg: rgba(255,255,255,0.96);
  --edu-chip-bg: rgba(255,255,255,0.95);
  --edu-button-bg: rgba(255,255,255,0.95);
  --edu-button-hover-bg: rgba(255,255,255,0.99);
  --edu-frame-bg: linear-gradient(180deg, rgba(0,131,141,0.08), rgba(255,255,255,0.96));
  --edu-border: rgba(255,255,255,0.84);
  --edu-border-strong: rgba(255,255,255,0.90);
  --edu-button-border: rgba(255,255,255,0.90);
  --edu-accent-border: rgba(255,255,255,0.90);
  --edu-frame-border: rgba(255,255,255,0.88);
  --edu-card-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
  --edu-kicker-shadow: 0 10px 26px rgba(0, 0, 0, 0.08);
  --edu-chip-shadow: 0 10px 24px rgba(0, 0, 0, 0.07);
  --edu-button-shadow: 0 14px 34px rgba(0, 0, 0, 0.16);
  --edu-button-hover-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
  --edu-surface-backdrop: blur(13px) saturate(112%);
  --edu-control-backdrop: blur(9px) saturate(112%);
  --edu-footer-bg: rgba(251, 252, 252, 0.96);
}

body.edu-page.high-contrast-level-1.liquid-ios26,
body.edu-page.high-contrast-level-2.liquid-ios26,
body.edu-page.high-contrast-level-3.liquid-ios26 {
  --edu-card-border-width: var(--hc-card-border-width);
  --edu-control-border-width: var(--hc-card-border-width);
  --edu-surface: var(--hc-surface);
  --edu-surface-soft: var(--hc-result-bg);
  --edu-surface-elevated: var(--hc-module-btn-bg);
  --edu-card-shadow: var(--hc-shadow);
  --edu-border: var(--hc-border);
  --edu-border-strong: var(--hc-module-btn-border);
  --edu-kicker-bg: var(--hc-button-bg);
  --edu-kicker-text: var(--hc-text);
  --edu-kicker-shadow: var(--hc-module-btn-shadow);
  --edu-chip-bg: var(--hc-button-bg);
  --edu-chip-text: var(--hc-text);
  --edu-chip-shadow: var(--hc-module-btn-shadow);
  --edu-accent-bg: var(--hc-button-bg);
  --edu-accent-border: var(--hc-input-border);
  --edu-accent-text: var(--hc-text);
  --edu-button-bg: var(--hc-module-btn-bg);
  --edu-button-hover-bg: var(--hc-module-btn-hover-bg);
  --edu-button-border: var(--hc-module-btn-border);
  --edu-button-shadow: var(--hc-module-btn-shadow);
  --edu-button-hover-shadow: var(--hc-module-btn-active-shadow);
  --edu-primary-bg: linear-gradient(180deg, rgba(0,131,141,0.18), rgba(0,131,141,0.12));
  --edu-primary-border: var(--hc-module-btn-active-border);
  --edu-frame-bg: var(--hc-result-bg);
  --edu-frame-border: var(--hc-input-border);
  --edu-frame-shadow: inset 0 1px 0 rgba(255,255,255,0.84);
  --edu-text-strong: var(--hc-text);
  --edu-text: var(--hc-text);
  --edu-text-muted: var(--hc-muted);
  --edu-highlight-1: rgba(0, 131, 141, 0.08);
  --edu-highlight-2: rgba(0, 131, 141, 0.05);
  --edu-surface-backdrop: var(--hc-blur);
  --edu-control-backdrop: none;
  --edu-focus-color: var(--hc-focus-color);
  --edu-focus-width: var(--hc-focus-width);
  --edu-footer-bg: var(--hc-surface);
  --edu-footer-border: var(--hc-border);
}

body.edu-page .edu-hero.card,
body.edu-page .edu-resource-card.card,
body.edu-page .edu-presentation-card.card,
body.edu-page .edu-video-shell.card,
body.edu-page .edu-info-card.card,
body.edu-page .faq-container {
  background: var(--edu-surface);
  border: var(--edu-card-border-width) solid var(--edu-border);
  box-shadow: var(--edu-card-shadow);
  backdrop-filter: var(--edu-surface-backdrop);
  -webkit-backdrop-filter: var(--edu-surface-backdrop);
}

body.edu-page .faq-container {
  background: var(--edu-surface-soft);
}

body.edu-page .edu-hero::before,
body.edu-page .edu-resource-card::before,
body.edu-page .edu-presentation-card::before,
body.edu-page .edu-video-shell::before,
body.edu-page .edu-info-card::before {
  background:
    radial-gradient(circle at top right, var(--edu-highlight-1), transparent 34%),
    radial-gradient(circle at bottom left, var(--edu-highlight-2), transparent 32%);
}

body.edu-page .edu-kicker {
  background: var(--edu-kicker-bg);
  border: var(--edu-control-border-width) solid var(--edu-border-strong);
  color: var(--edu-kicker-text);
  box-shadow: var(--edu-kicker-shadow);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page .edu-chip,
body.edu-page .edu-meta-pill {
  background: var(--edu-chip-bg);
  border: var(--edu-control-border-width) solid var(--edu-border);
  color: var(--edu-chip-text);
  box-shadow: var(--edu-chip-shadow);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page .edu-card-badge {
  background: var(--edu-accent-bg);
  border: var(--edu-control-border-width) solid var(--edu-accent-border);
  color: var(--edu-accent-text);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page .edu-title,
body.edu-page .edu-section-title,
body.edu-page .presentation-heading,
body.edu-page .edu-card-title,
body.edu-page .edu-presentation-card h3,
body.edu-page .edu-info-card h2 {
  color: var(--edu-text-strong);
}

body.edu-page .edu-lead,
body.edu-page .edu-card-description,
body.edu-page .edu-presentation-card p,
body.edu-page .faq-answer p,
body.edu-page .page-summary {
  color: var(--edu-text);
}

body.edu-page .breadcrumbs,
body.edu-page .notice,
body.edu-page .edu-section-copy {
  color: var(--edu-text-muted);
}

body.edu-page .chapter-time {
  color: var(--edu-accent-text);
}

body.edu-page .edu-video-frame {
  background: var(--edu-frame-bg);
  border: var(--edu-control-border-width) solid var(--edu-frame-border);
  box-shadow: var(--edu-frame-shadow);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page .resource-button,
body.edu-page .chapter-list a,
body.edu-page .faq-question {
  background: var(--edu-button-bg);
  border: var(--edu-control-border-width) solid var(--edu-button-border);
  color: var(--edu-text-strong);
  box-shadow: var(--edu-button-shadow);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page .resource-button.primary {
  background: var(--edu-primary-bg);
  border-color: var(--edu-primary-border);
}

body.edu-page .resource-button.secondary {
  background: var(--edu-surface-elevated);
}

body.edu-page .resource-button:hover,
body.edu-page .resource-button:focus-visible,
body.edu-page .chapter-list a:hover,
body.edu-page .chapter-list a:focus-visible,
body.edu-page .faq-question:hover,
body.edu-page .faq-question:focus-visible,
body.edu-page .faq-item.open .faq-question {
  background: var(--edu-button-hover-bg);
  border-color: var(--edu-border-strong);
  box-shadow: var(--edu-button-hover-shadow);
}

body.edu-page .resource-button:focus-visible,
body.edu-page .chapter-list a:focus-visible,
body.edu-page .faq-question:focus-visible {
  outline: none;
  box-shadow: var(--edu-button-hover-shadow), 0 0 0 var(--edu-focus-width) var(--edu-focus-color);
}

body.edu-page footer {
  background: var(--edu-footer-bg);
  border-top: 1px solid var(--edu-footer-border);
  color: var(--edu-text-muted);
  backdrop-filter: var(--edu-control-backdrop);
  -webkit-backdrop-filter: var(--edu-control-backdrop);
}

body.edu-page footer strong,
body.edu-page footer a {
  color: var(--edu-text-strong);
}

body.edu-page footer a:hover,
body.edu-page footer a:focus-visible {
  color: var(--edu-text-strong);
}