/* ==========================================================================
   CATEGORIES + COURSE CARDS
   ========================================================================== */

.category-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-4);
}
.cat-skel { background: var(--bg-accent-tint); border-radius: var(--radius-lg, 16px); animation: cat-skel-pulse 1.4s ease-in-out infinite; }
@keyframes cat-skel-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.category-card {
  padding: var(--space-5) var(--space-4);
  text-align: center;
  cursor: pointer;
}

.category-icon {
  width: 44px;
  height: 44px;
  margin-inline: auto;
  border-radius: var(--radius-sm);
  background: var(--bg-accent-tint);
  color: var(--brand-primary);
  display: grid;
  place-items: center;
  font-size: 20px;
  margin-bottom: var(--space-3);
  transition: background-color var(--dur-base) var(--ease-out);
}

.category-card:hover .category-icon {
  background: var(--brand-primary);
  color: var(--brand-on-primary);
}

.category-name {
  font-size: var(--text-sm);
  font-weight: 600;
}

.category-count {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .category-grid { grid-template-columns: repeat(3, 1fr); }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .category-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---- Course cards ---- */
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.course-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.course-thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--bg-accent-tint);
  overflow: hidden;
}

.course-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease-out);
}

.course-thumb-fallback {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-size: 32px;
}

/* Whole-card lift on hover, violet-tinted — matches the reference
   courses.html exactly (.course-card:hover { translateY(-6px);
   box-shadow: 0 16px 32px rgba(121,80,242,.08); border-color:
   var(--primary-light); }). .card-hoverable (components.css) already
   gives every card a neutral lift; this refines it for course cards
   specifically so the shadow/border read as "on-brand" rather than
   generic grey. */
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px rgba(121, 80, 242, 0.08);
  border-color: var(--primary-light);
}

.course-card:hover .course-thumb img {
  transform: scale(1.06);
}

.course-level-pill {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  backdrop-filter: blur(6px);
  background: color-mix(in srgb, var(--ink-950) 55%, transparent);
  color: #fff;
}

.course-play {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
  background: color-mix(in srgb, var(--ink-950) 30%, transparent);
  transition: opacity var(--dur-fast) var(--ease-out);
}
.course-card:hover .course-play { opacity: 1; }
.course-play-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #fff;
  color: var(--ink-950);
  display: grid;
  place-items: center;
  font-size: 20px;
  transform: scale(0.85);
  transition: transform var(--dur-fast) var(--ease-spring);
}
.course-card:hover .course-play-btn { transform: scale(1); }

.course-body {
  padding: var(--space-4) var(--space-4) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.course-category {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--brand-primary);
}

.course-title {
  font-family: var(--font-body);
  font-size: var(--text-md);
  font-weight: 600;
  line-height: 1.35;
}

.course-teacher {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.course-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.course-rating {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-primary);
}

.course-rating-count {
  color: var(--text-muted);
  font-weight: 400;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--border-default);
}

.course-price {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-md);
}

.course-price-original {
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: line-through;
  margin-right: var(--space-2);
  font-weight: 400;
}

@media (max-width: 640px) {
  .course-grid { grid-template-columns: 1fr; }
}

/* ---- Course detail page (moved from an inline <style> in
   templates/courses/detail.html) ---- */
.course-detail-layout { display: grid; grid-template-columns: 1fr 340px; gap: var(--space-7); align-items: start; }
.module-list { display: flex; flex-direction: column; gap: var(--space-3); margin-top: var(--space-4); }
.module-item { border: 1px solid var(--border-default); border-radius: var(--radius-md); overflow: hidden; }
.module-header { padding: var(--space-4); background: var(--bg-accent-tint); font-weight: 600; font-size: var(--text-sm); display:flex; justify-content:space-between; align-items:center; cursor:pointer; user-select:none; }
.module-header i.chevron { transition: transform 150ms ease-out; font-size: 15px; color: var(--text-muted); }
.module-item.is-collapsed .chevron { transform: rotate(-90deg); }
.module-item.is-collapsed .module-lessons { display: none; }
.lesson-row { padding: var(--space-3) var(--space-4); display:flex; align-items:center; gap: var(--space-3); font-size: var(--text-sm); border-top: 1px solid var(--border-default); transition: background 150ms ease-out; }
.lesson-row:hover { background: var(--bg-accent-tint); }
.lesson-row i { color: var(--text-muted); }
.purchase-card { position: sticky; top: 100px; padding: var(--space-5); }
.purchase-price { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 600; margin: var(--space-3) 0; }
.outcome-list { display:flex; flex-direction:column; gap: var(--space-2); margin-top: var(--space-4); }
.outcome-item { display:flex; align-items:flex-start; gap: var(--space-2); font-size: var(--text-sm); }
.outcome-item i { color: var(--accent-cove); margin-top: 2px; flex-shrink:0; }

.detail-skel { background: var(--bg-accent-tint); border-radius: var(--radius-sm, 8px); animation: detail-skel-pulse 1.4s ease-in-out infinite; }
@keyframes detail-skel-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.mobile-buy-bar { display: none; }
@media (max-width: 900px) {
  .course-detail-layout { grid-template-columns: 1fr; }
  .purchase-card { position: static; }
  body.has-mobile-buy-bar .container { padding-bottom: 90px; }
  .mobile-buy-bar {
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    background: var(--bg-surface); border-top: 1px solid var(--border-default);
    padding: var(--sp-3) var(--sp-4); box-shadow: var(--shadow-lg);
  }
  .mobile-buy-bar .price { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-h4); color: var(--text-primary); }
  .mobile-buy-bar .btn { flex-shrink: 0; }
}

/* ---- Catalog page (moved from an inline <style> in
   templates/courses/catalog.html) ---- */
.catalog-layout { display: grid; grid-template-columns: 240px 1fr; gap: var(--space-7); align-items: start; }
.catalog-filters { position: sticky; top: 100px; display: flex; flex-direction: column; gap: var(--space-4); }
.filter-group { display: flex; flex-direction: column; gap: var(--space-2); }
@media (max-width: 860px) {
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-filters { position: static; flex-direction: row; flex-wrap: wrap; }
  .filter-group { flex: 1; min-width: 140px; }
}

.course-card-skeleton { border-radius: var(--radius-lg, 16px); overflow: hidden; border: 1px solid var(--border-default); background: var(--bg-surface); }
.skel-block { background: var(--bg-accent-tint); animation: catalog-skel-pulse 1.4s ease-in-out infinite; }
@keyframes catalog-skel-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.5; } }

.page-btn {
  min-width: 36px; height: 36px; padding: 0 10px; border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-default); background: var(--bg-surface); color: var(--text-secondary);
  font-size: 13px; font-weight: 600; cursor: pointer;
  transition: border-color 150ms ease-out, color 150ms ease-out, background 150ms ease-out;
}
.page-btn:hover:not(:disabled) { border-color: var(--border-strong); color: var(--text-primary); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-btn.is-active { background: var(--brand-primary); border-color: var(--brand-primary); color: #fff; }