/* Learn Courses Catalog — nested category → topic → subtopic */

.learn-courses-catalog {
  margin-bottom: var(--space-2xl, 3rem);
  padding: var(--space-xl, 2rem);
  background: var(--color-bg-card, #fff);
  border: 1px solid var(--color-border, #e5e7eb);
  border-radius: var(--radius-lg, 12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.learn-courses-catalog__header {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto var(--space-xl, 2rem);
}

.learn-courses-catalog__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-primary, #2d6a4f);
  margin: 0 0 0.75rem;
}

.learn-courses-catalog__title {
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: var(--color-primary, #2d6a4f);
  margin: 0 0 0.75rem;
  font-weight: 700;
}

.learn-courses-catalog__intro,
.learn-courses-catalog__cat-intro {
  color: var(--color-text-secondary, #5c6b5c);
  font-size: var(--font-size-base, 1rem);
  line-height: 1.55;
  margin: 0;
}

.learn-courses-catalog__cat-intro {
  margin-bottom: var(--space-lg, 1.5rem);
  padding-left: 0.25rem;
  border-left: 3px solid var(--color-primary-light, #d8f3dc);
}

/* Category tabs */
.learn-courses-catalog__cat-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-bottom: var(--space-lg, 1.5rem);
  padding-bottom: var(--space-md, 1rem);
  border-bottom: 1px solid var(--color-border-light, #eef0ee);
}

.learn-courses-catalog__cat-tab {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.55rem 1rem;
  border: 1px solid var(--color-border, #dde3dd);
  border-radius: 999px;
  background: var(--color-surface-elevated, #f8faf8);
  color: var(--color-text-primary, #2c3e2c);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

.learn-courses-catalog__cat-tab:hover {
  border-color: var(--color-primary, #2d6a4f);
  background: var(--color-primary-light, #e8f8f0);
}

.learn-courses-catalog__cat-tab:focus-visible {
  outline: 2px solid var(--color-primary, #2d6a4f);
  outline-offset: 2px;
}

.learn-courses-catalog__cat-tab.is-active {
  background: var(--color-primary, #2d6a4f);
  border-color: var(--color-primary, #2d6a4f);
  color: #fff;
  box-shadow: 0 4px 14px rgba(45, 106, 79, 0.25);
}

.learn-courses-catalog__cat-tab.is-active i {
  opacity: 0.95;
}

/* Topic grid */
.learn-courses-catalog__topics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md, 1rem);
  align-items: start;
}

.learn-courses-catalog__topic {
  border: 1px solid var(--color-border, #e0e6e0);
  border-radius: var(--radius-md, 10px);
  background: var(--color-bg-card, #fff);
  overflow: hidden;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

.learn-courses-catalog__topic:hover {
  border-color: rgba(45, 106, 79, 0.45);
}

.learn-courses-catalog__topic.is-expanded {
  border-color: var(--color-primary, #2d6a4f);
  box-shadow: 0 8px 28px rgba(45, 106, 79, 0.12);
  grid-column: 1 / -1;
}

@media (min-width: 900px) {
  .learn-courses-catalog__topic.is-expanded {
    grid-column: span 2;
  }
}

.learn-courses-catalog__topic-btn {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  width: 100%;
  padding: 1.1rem 1.15rem;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  color: inherit;
  font: inherit;
}

.learn-courses-catalog__topic-btn:focus-visible {
  outline: 2px solid var(--color-primary, #2d6a4f);
  outline-offset: -2px;
}

.learn-courses-catalog__topic-icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--color-primary-light, #e8f8f0);
  color: var(--color-primary, #2d6a4f);
  font-size: 1.1rem;
}

.learn-courses-catalog__topic.is-expanded .learn-courses-catalog__topic-icon {
  background: var(--color-primary, #2d6a4f);
  color: #fff;
}

.learn-courses-catalog__topic-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.learn-courses-catalog__topic-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text-primary, #1a2e1a);
  line-height: 1.25;
}

.learn-courses-catalog__topic-desc {
  font-size: 0.82rem;
  color: var(--color-text-secondary, #5c6b5c);
  line-height: 1.4;
}

.learn-courses-catalog__topic-chevron {
  flex-shrink: 0;
  color: var(--color-text-secondary, #7a8a7a);
  padding-top: 0.35rem;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.learn-courses-catalog__topic.is-expanded .learn-courses-catalog__topic-chevron {
  transform: rotate(180deg);
  color: var(--color-primary, #2d6a4f);
}

.learn-courses-catalog__topic-desc {
  display: block;
  font-size: 0.82rem;
  color: var(--color-text-secondary, #5c6b5c);
  line-height: 1.45;
  margin-top: 0.2rem;
}

.learn-courses-catalog__topic-count {
  display: inline-block;
  margin-top: 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary, #2d6a4f);
  background: var(--color-primary-light, #e8f8f0);
  padding: 0.15rem 0.55rem;
  border-radius: 999px;
}

/* Nested topic groups (Children & Family Learning) */
.learn-courses-catalog__groups {
  min-height: 0;
  overflow: hidden;
  padding: 0 0.75rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.3s ease 0.05s, padding 0.35s ease;
}

.learn-courses-catalog__topic.is-expanded .learn-courses-catalog__groups {
  opacity: 1;
  padding: 0.85rem 0.75rem 1.1rem;
}

.learn-courses-catalog__group {
  border: 1px solid var(--color-border-light, #e8ece8);
  border-radius: var(--radius-md, 10px);
  background: var(--color-surface-elevated, #f8faf8);
  overflow: hidden;
}

.learn-courses-catalog__group-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 0.9rem;
  border: none;
  background: transparent;
  cursor: pointer;
  text-align: left;
  color: var(--color-text-primary, #2c3e2c);
}

.learn-courses-catalog__group-title {
  flex: 1;
  font-size: 0.88rem;
  font-weight: 600;
}

.learn-courses-catalog__group-count {
  font-size: 0.72rem;
  color: var(--color-text-secondary, #5c6b5c);
}

.learn-courses-catalog__group-chevron {
  color: var(--color-text-secondary, #5c6b5c);
  transition: transform 0.25s ease;
}

.learn-courses-catalog__group.is-expanded .learn-courses-catalog__group-chevron {
  transform: rotate(180deg);
  color: var(--color-primary, #2d6a4f);
}

.learn-courses-catalog__group-panel {
  display: none;
  overflow: hidden;
  border-top: 1px solid transparent;
}

.learn-courses-catalog__group.is-expanded .learn-courses-catalog__group-panel {
  display: block;
  border-top-color: var(--color-border-light, #eef0ee);
}

.learn-courses-catalog__group-panel .learn-courses-catalog__subtopics {
  padding: 0.65rem 0.85rem 0.85rem;
  opacity: 1;
  pointer-events: auto;
}

.learn-courses-catalog__empty {
  margin: 0;
  padding: 0.75rem 0.85rem;
  font-size: 0.82rem;
  color: var(--color-text-secondary, #5c6b5c);
}

.learn-courses-catalog__subtopic.is-search-match,
.learn-courses-catalog__topic.is-search-match,
.learn-courses-catalog__group.is-search-match {
  border-color: var(--color-primary, #2d6a4f);
  box-shadow: 0 0 0 1px rgba(45, 106, 79, 0.15);
}

.learn-courses-catalog__subtopic.is-search-match {
  background: var(--color-primary-light, #e8f8f0);
}

/* Expandable panel */
.learn-courses-catalog__topic-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border-top: 1px solid transparent;
  overflow: hidden;
}

.learn-courses-catalog__topic.is-expanded .learn-courses-catalog__topic-panel {
  grid-template-rows: 1fr;
  border-top-color: var(--color-border-light, #eef0ee);
}

.learn-courses-catalog__subtopics {
  min-height: 0;
  overflow: hidden;
  padding: 0 1rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  opacity: 0;
  transition: opacity 0.3s ease 0.05s, padding 0.35s ease;
}

.learn-courses-catalog__topic.is-expanded .learn-courses-catalog__topic-panel > .learn-courses-catalog__subtopics {
  opacity: 1;
  padding: 0.85rem 1rem 1.1rem;
}

.learn-courses-catalog__subtopic {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-light, #e8ece8);
  background: var(--color-surface-elevated, #f6f8f6);
  color: var(--color-text-primary, #2c3e2c);
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition:
    background 0.2s ease,
    border-color 0.2s ease,
    transform 0.15s ease;
}

.learn-courses-catalog__subtopic:hover,
.learn-courses-catalog__subtopic:focus-visible {
  border-color: var(--color-primary, #2d6a4f);
  background: var(--color-primary-light, #e8f8f0);
  outline: none;
}

.learn-courses-catalog__subtopic-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-primary, #2d6a4f);
  opacity: 0.7;
}

/* Published courses section */
.learn-published-courses {
  margin-top: var(--space-xl, 2rem);
  padding-top: var(--space-xl, 2rem);
  border-top: 1px solid var(--color-border-light, #eef0ee);
}

.learn-published-courses__title {
  font-size: 1.25rem;
  color: var(--color-primary, #2d6a4f);
  margin: 0 0 0.35rem;
  font-weight: 700;
}

.learn-published-courses__subtitle {
  color: var(--color-text-secondary, #5c6b5c);
  font-size: 0.9rem;
  margin: 0 0 var(--space-lg, 1.5rem);
}

@media (max-width: 640px) {
  .learn-courses-catalog {
    padding: var(--space-lg, 1.25rem);
  }

  .learn-courses-catalog__cat-nav {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.75rem;
    scrollbar-width: thin;
  }

  .learn-courses-catalog__cat-tab {
    flex-shrink: 0;
  }

  .learn-courses-catalog__topics {
    grid-template-columns: 1fr;
  }

  .learn-courses-catalog__topic.is-expanded {
    grid-column: 1;
  }

  .learn-courses-catalog__topic-btn {
    padding: 1rem;
    min-height: 3.25rem;
  }

  .learn-courses-catalog__subtopic {
    min-height: 2.5rem;
    padding: 0.55rem 0.9rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .learn-courses-catalog__topic-panel,
  .learn-courses-catalog__subtopics,
  .learn-courses-catalog__topic-chevron,
  .learn-courses-catalog__cat-tab,
  .learn-courses-catalog__subtopic {
    transition: none;
  }
}