:root {
  --education-surface: var(--bg_glass);
  --education-surface-strong: rgba(17, 25, 40, 0.88);
  --education-surface-soft: rgba(255, 255, 255, 0.03);
  --education-border: var(--border_color);
  --education-border-strong: rgba(0, 212, 255, 0.28);
  --education-text: #ffffff;
  --education-muted: var(--text_muted);
  --education-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}

.education-hub-page {
  min-height: 100vh;
  font-family: "Outfit", sans-serif;
  font-size: var(--font-base);
  color: var(--education-text);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.education-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: clamp(84px, 6vw, 108px) 0 40px;
}

.education-library-section {
  padding: clamp(26px, 3.5vw, 36px);
  border-radius: 28px;
  border: 1px solid var(--education-border);
  background: var(--education-surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--education-shadow);
}

.education-library-header {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.education-library-header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 3.3vw, 2.55rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #ffffff;
  text-transform: none;
}

.education-library-root {
  display: grid;
  gap: 18px;
}

.education-category-card,
.education-course-card,
.education-group-card {
  border: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(10, 16, 26, 0.72);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.18);
}

.education-course-card {
  border-radius: 18px;
  background: rgba(9, 14, 22, 0.86);
}

.education-group-card {
  border-radius: 16px;
  background: rgba(7, 11, 19, 0.9);
}

.education-category-card[open],
.education-course-card[open],
.education-group-card[open] {
  border-color: var(--education-border-strong);
}

.education-category-summary,
.education-course-summary,
.education-group-summary {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 18px;
  padding: 22px 72px 22px 24px;
  cursor: pointer;
  list-style: none;
  text-transform: none;
}

.education-category-summary::-webkit-details-marker,
.education-course-summary::-webkit-details-marker,
.education-group-summary::-webkit-details-marker {
  display: none;
}

.education-category-summary::after,
.education-course-summary::after,
.education-group-summary::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 28px;
  width: 11px;
  height: 11px;
  border-right: 2px solid var(--primary_color);
  border-bottom: 2px solid var(--primary_color);
  transform: translateY(-65%) rotate(45deg);
  transition: transform 0.2s ease;
}

.education-category-card[open] > .education-category-summary::after,
.education-course-card[open] > .education-course-summary::after,
.education-group-card[open] > .education-group-summary::after {
  transform: translateY(-35%) rotate(-135deg);
}

.education-category-heading,
.education-course-heading,
.education-group-heading {
  min-width: 0;
}

.education-category-title,
.education-course-title,
.education-group-title,
.education-resource-title {
  margin: 0;
  color: #ffffff;
  text-transform: none;
  letter-spacing: -0.02em;
  word-break: break-word;
}

.education-category-title {
  font-size: clamp(1.06rem, 2vw, 1.3rem);
  line-height: 1.25;
}

.education-course-title {
  font-size: 0.88rem;
  line-height: 1.35;
}

.education-group-title {
  font-size: 0.98rem;
  line-height: 1.35;
}

.education-category-description {
  margin: 8px 0 0;
  max-width: 62ch;
  color: var(--education-muted);
  font-size: 0.88rem;
  line-height: 1.6;
  text-transform: none;
}

.education-category-meta,
.education-course-meta,
.education-group-meta {
  display: grid;
  gap: 4px;
  justify-items: end;
  text-align: right;
  margin-right: 6px;
  white-space: nowrap;
}

.education-meta-row {
  display: block;
  color: var(--education-muted);
  font-size: 0.84rem;
  font-weight: 500;
  text-transform: none;
}

.education-category-content,
.education-course-content {
  display: grid;
  gap: 14px;
  padding: 0 18px 18px;
}

.education-resource-list {
  display: grid;
  gap: 10px;
}

.education-resource-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(255, 255, 255, 0.03);
}

.education-resource-main {
  min-width: 0;
}

.education-resource-title {
  font-size: 0.92rem;
  line-height: 1.45;
}

.education-resource-meta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 8px 0 0;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(0, 212, 255, 0.08);
  color: #a8efff;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: none;
}

.education-resource-actions {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.education-inline-link,
.education-download-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--education-border);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition:
    border-color 0.2s ease,
    transform 0.2s ease,
    background 0.2s ease,
    color 0.2s ease;
}

.education-inline-link:hover,
.education-download-link:hover,
.education-inline-link:focus-visible,
.education-download-link:focus-visible {
  border-color: var(--primary_color);
  background: rgba(0, 212, 255, 0.08);
  color: #ffffff;
  transform: translateY(-1px);
}

.education-empty-state,
.education-error-state {
  margin: 0;
  padding: 20px 22px;
  border-radius: 18px;
  border: 1px solid rgba(255, 170, 0, 0.18);
  background: rgba(255, 170, 0, 0.06);
  color: #ffe5b0;
  font-size: 0.96rem;
  line-height: 1.6;
}

.education-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 22px;
  padding: 0 4px;
}

.education-footer p {
  margin: 0;
  color: var(--education-muted);
  font-size: 0.9rem;
}

@media (max-width: 991px) {
  .education-shell {
    width: min(100% - 24px, 1000px);
    padding-top: 82px;
  }

  .education-category-summary,
  .education-course-summary,
  .education-group-summary {
    padding: 20px 64px 20px 20px;
  }

  .education-resource-row {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }

  .education-resource-actions {
    justify-content: flex-start;
  }

  .education-footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 640px) {
  .education-library-section {
    padding: 22px 16px;
    border-radius: 20px;
  }

  .education-category-summary,
  .education-course-summary,
  .education-group-summary {
    grid-template-columns: 1fr;
    align-items: flex-start;
    gap: 10px;
    padding: 18px 52px 18px 16px;
  }

  .education-category-summary::after,
  .education-course-summary::after,
  .education-group-summary::after {
    right: 18px;
  }

  .education-category-meta,
  .education-course-meta,
  .education-group-meta {
    justify-items: start;
    text-align: left;
    margin-right: 0;
  }

  .education-category-content,
  .education-course-content {
    padding: 0 12px 12px;
  }

  .education-resource-row {
    padding: 14px;
  }
}