/* Public website — Courses pages */
.courses-page {
  padding: 110px 0 80px;
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, rgba(91,107,234,.08), transparent),
    radial-gradient(ellipse 60% 40% at 0% 20%, rgba(14,166,114,.06), transparent),
    var(--paper, #f6f7fb);
}
.courses-page .page-hero {
  margin-bottom: 36px;
}
.courses-page .page-hero .eyebrow {
  margin-bottom: 12px;
}
.courses-page .page-hero h1 {
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.35;
  margin-bottom: 12px;
}
.courses-page .page-hero p {
  color: var(--ink-soft);
  font-size: 15px;
  max-width: 560px;
  line-height: 1.85;
  margin: 0;
}

.courses-page .filter-tabs {
  margin-bottom: 28px;
}
.courses-page .courses-grid a.course-card {
  color: inherit;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.courses-page .course-card .course-body {
  flex: 1;
  display: flex;
  flex-direction: column;
}
.courses-page .course-card .course-foot {
  margin-top: auto;
}
.courses-page .course-cover {
  position: relative;
}
.courses-page .course-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 16px 16px, rgba(255,255,255,.28) 1.4px, transparent 1.4px);
  background-size: 20px 20px;
  opacity: .55;
  pointer-events: none;
}
.courses-page .empty-courses {
  grid-column: 1 / -1;
  text-align: center;
  padding: 64px 20px;
  background: #fff;
  border: 1px dashed var(--border);
  border-radius: 20px;
  color: var(--ink-soft);
}

/* Course detail */
.course-show {
  padding: 100px 0 80px;
  background: var(--paper, #f6f7fb);
}
.course-show .back-link {
  margin-bottom: 24px;
}
.course-show .sidebar-card {
  position: sticky;
  top: 96px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 22px;
  overflow: hidden;
  box-shadow: var(--shadow-sm, 0 8px 24px rgba(20,25,45,.05));
}
.course-show .sidebar-card .cover {
  height: 200px;
  position: relative;
}
.course-show .sidebar-card .cover .lv-tag {
  position: absolute;
  top: 14px;
  inset-inline-start: 14px;
  z-index: 1;
}
.course-show .sidebar-card .body {
  padding: 22px;
}
.course-show .sidebar-card h1 {
  font-size: 22px;
  line-height: 1.45;
  margin: 8px 0 14px;
}
.course-show .meta-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0;
}
.course-show .meta-chips span {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-soft);
  background: var(--paper);
  border: 1px solid var(--border);
  padding: 6px 12px;
  border-radius: 999px;
}
.course-show .price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 18px 0;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.course-show .price-row .price {
  font-size: 22px;
}
.course-show .preview-note {
  font-size: 12.5px;
  color: var(--teal-dark, #0a7f57);
  background: var(--teal-soft, #e2f8f5);
  padding: 10px 14px;
  border-radius: 10px;
  margin-bottom: 14px;
}

.course-show .content-panel {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm, 0 4px 16px rgba(20,25,45,.03));
}
.course-show .content-panel h3 {
  font-size: 18px;
  margin-bottom: 14px;
}
.course-show .content-panel > p {
  line-height: 1.9;
  color: var(--ink-soft);
  margin: 0;
}
.course-show .success-box {
  background: linear-gradient(135deg, var(--teal-soft, #e2f8f5), #f0faf7);
  border: 1px solid rgba(14,166,114,.18);
  border-radius: 16px;
  padding: 20px 22px;
  margin-bottom: 22px;
}
.course-show .success-box h4 {
  font-size: 15px;
  margin-bottom: 8px;
  color: var(--teal-dark, #0a7f57);
}
.course-show .success-box p {
  margin: 0;
  line-height: 1.8;
  color: var(--ink-soft);
  font-size: 14px;
}

.course-show .curriculum .unit {
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 12px;
  background: #fff;
}
.course-show .curriculum .unit-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  background: #f7f8fc;
  cursor: pointer;
  user-select: none;
}
.course-show .curriculum .unit-head b {
  font-family: 'Cairo', sans-serif;
  font-size: 14.5px;
}
.course-show .curriculum .unit-head .meta {
  font-size: 12px;
  color: var(--ink-faint);
  white-space: nowrap;
}
.course-show .curriculum .unit-lessons {
  display: none;
  padding: 4px 10px 12px;
}
.course-show .curriculum .unit.open .unit-lessons {
  display: block;
}
.course-show .curriculum .lesson {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 10px;
  border-radius: 10px;
  transition: .15s;
}
.course-show .curriculum .lesson:hover {
  background: #f7f8fc;
}
.course-show .curriculum .lesson-ic {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 13px;
}
.course-show .curriculum .lesson-ic.video { background: #fde9e9; color: #ef4a4a; }
.course-show .curriculum .lesson-ic.pdf { background: var(--blue-soft, #e8f0fe); color: var(--blue, #4f8ef7); }
.course-show .curriculum .lesson-ic.quiz { background: var(--teal-soft, #e2f8f5); color: var(--teal, #12b8a3); }
.course-show .curriculum .lesson-title {
  flex: 1;
  font-weight: 600;
  font-size: 14px;
}
.course-show .curriculum .lesson-type {
  font-size: 11.5px;
  color: var(--ink-faint);
}
.course-show .curriculum .free-chip {
  font-family: 'Cairo', sans-serif;
  font-weight: 800;
  font-size: 10px;
  background: var(--amber-soft, #fef3e0);
  color: var(--amber, #f5a729);
  padding: 3px 9px;
  border-radius: 999px;
}
.course-show .curriculum .l-dur {
  font-size: 12px;
  color: var(--ink-faint);
  white-space: nowrap;
}

.course-show .related-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.course-show .related-grid .course-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
}
.course-show .related-grid .course-cover {
  width: 110px;
  min-height: 100%;
  height: auto;
  flex-shrink: 0;
}
.course-show .related-grid .course-body {
  flex: 1;
}

@media (max-width: 991px) {
  .course-show .sidebar-card { position: static; }
  .course-show .related-grid .course-card { flex-direction: column; }
  .course-show .related-grid .course-cover { width: 100%; height: 110px; }
}