/* ================================================================
   course.css — Single-course landing page
   Loaded AFTER catalog.css. Reuses .ex-* (hero, breadcrumb, CTA form,
   color tokens --ex-blue / --ex-yellow / --ex-grad-btn, etc).
   Adds only course-specific layout (.co-*).
================================================================ */

/* Reveal pre-states for the extra variants used here */
#explore-page .ex-reveal-l     { opacity: 0; transform: translateX(-40px); will-change: transform, opacity; }
#explore-page .ex-reveal-r     { opacity: 0; transform: translateX( 40px); will-change: transform, opacity; }
#explore-page .ex-reveal-scale { opacity: 0; transform: scale(.94);       will-change: transform, opacity; }
.no-gsap #explore-page .ex-reveal-l,
.no-gsap #explore-page .ex-reveal-r,
.no-gsap #explore-page .ex-reveal-scale { opacity: 1; transform: none; }

/* ============================================================
   HERO TWEAKS — center the meta row, lighten lead text spacing
============================================================ */
#explore-page.explore-course .co-hero { text-align: center; }

#explore-page.explore-course .co-hero-meta {
  list-style: none;
  padding: 0;
  margin: 22px 0 0;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px 32px;
  color: #ffffff;
  font-size: 1rem;
}
#explore-page.explore-course .co-hero-meta li {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
}
#explore-page.explore-course .co-hero-meta li strong { font-weight: 700; margin-right: 2px; }
#explore-page.explore-course .co-hero-meta li i { color: #fff }

#explore-page.explore-course .co-body {
  padding: 60px 0 30px;
}

#explore-page.explore-course .co-block + .co-block { margin-top: 42px; }
#explore-page.explore-course .co-block-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ex-ink);
  margin: 0 0 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ex-line);
}

/* "What You Will Learn" — checkmark list */
#explore-page.explore-course .co-learn-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}
#explore-page.explore-course .co-learn-list li {
  display: flex;
  gap: .85rem;
  line-height: 1.55;
  color: var(--ex-ink);
  font-size: 1rem;
}
#explore-page.explore-course .co-learn-list li i {
  flex: 0 0 22px;
  height: 22px; width: 22px;
  border-radius: 50%;
  color: var(--ex-teal);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .7rem;
  margin-top: 3px;
}

/* Lesson cards in the main column */
#explore-page.explore-course .co-lcard {
  display: grid;
  grid-template-columns: 240px 1fr;
  background: #fff;
  border: 1px solid var(--ex-line);
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 18px;
  transition: transform .35s ease, box-shadow .35s ease, border-color .25s ease;
}
#explore-page.explore-course .co-lcard:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(11, 17, 23, 0.10);
  border-color: rgba(63, 176, 202, 0.75);
}
#explore-page.explore-course .co-lcard.is-active {
  border-color: var(--ex-teal);
  box-shadow: 0 0 0 1px var(--ex-teal) inset;
}
#explore-page.explore-course .co-lcard-thumb {
  display: block;
  position: relative;
  overflow: hidden;
  background: #eef1f6;
}
#explore-page.explore-course .co-lcard-thumb img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform .6s ease;
}
#explore-page.explore-course .co-lcard:hover .co-lcard-thumb img { transform: scale(1.05); }
#explore-page.explore-course .co-lcard-body {
  padding: 20px 22px;
  display: flex; flex-direction: column;
  gap: .5rem;
}
#explore-page.explore-course .co-lcard-head {
  display: flex; align-items: center; justify-content: space-between;
  color: var(--ex-muted);
  font-size: .92rem;
}
#explore-page.explore-course .co-lcard-num  { font-weight: 600; }
#explore-page.explore-course .co-lcard-time i { margin-right: .4rem; }
#explore-page.explore-course .co-lcard-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--ex-ink);
  margin: 2px 0 4px;
}
#explore-page.explore-course .co-lcard-title a {
  color: inherit;
  text-decoration: none;
}
#explore-page.explore-course .co-lcard-title a:hover { color: var(--ex-teal); }
#explore-page.explore-course .co-lcard-desc {
  color: var(--ex-muted);
  margin: 0 0 8px;
  line-height: 1.55;
}
#explore-page.explore-course .co-lcard-cta {
  align-self: flex-end;
  color: var(--ex-teal);
  font-weight: 400;
  text-decoration: none;
  display: inline-flex; align-items: center; gap: .45rem;
  transition: gap .25s ease, color .2s ease;
}
#explore-page.explore-course .co-lcard-cta:hover { gap: .85rem; color: var(--ex-teal-dark); }

/* ============================================================
   SIDEBAR
============================================================ */
#explore-page.explore-course .co-side-sticky {
  position: sticky;
  top: 90px;
  display: grid;
  gap: 20px;
}

/* Lesson index card */
#explore-page.explore-course .co-side-card {
  background: #fff;
  border: 1px solid var(--ex-line);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 6px 18px rgba(11, 17, 23, 0.04);
}
#explore-page.explore-course .co-side-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--ex-line);
  margin-bottom: 8px;
}
#explore-page.explore-course .co-side-head h3 {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ex-ink);
}
#explore-page.explore-course .co-side-meta { color: var(--ex-muted); font-size: .85rem; }

#explore-page.explore-course .co-side-list {
  list-style: none;
  padding: 0;
  margin: 6px 0 0;
}
#explore-page.explore-course .co-side-list li {
  display: grid;
  grid-template-columns: 28px 1fr 16px;
  align-items: center;
  gap: 12px;
  padding: 10px 6px;
  border-radius: 10px;
  transition: background .2s ease;
}
#explore-page.explore-course .co-side-list li:hover { background: var(--ex-soft); }
#explore-page.explore-course .co-side-list li .n {
  width: 28px; height: 28px;
  border-radius: 8px;
  background: #eef1f6;
  color: var(--ex-muted);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: .85rem; font-weight: 700;
}
#explore-page.explore-course .co-side-list li:hover .n,
#explore-page.explore-course .co-side-list li.is-active .n {
  background: rgba(63, 176, 202, 0.15);
  color: var(--ex-teal);
}
#explore-page.explore-course .co-side-list li a {
  color: var(--ex-ink);
  text-decoration: none;
  font-weight: 600;
  font-size: .95rem;
  line-height: 1.35;
}
#explore-page.explore-course .co-side-list li i {
  color: var(--ex-muted);
  font-size: .75rem;
}

/* Complimentary access gradient card */
#explore-page.explore-course .co-access-card {
  position: relative;
  border-radius: 16px;
  padding: 28px 26px 26px;
  color: #fff;
  overflow: hidden;
  background: linear-gradient(135deg, #5640c8 0%, #8a2a8a 55%, #c9325e 100%);
  text-align: center;
  box-shadow: 0 18px 36px rgba(108, 46, 160, 0.30);
}
#explore-page.explore-course .co-access-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 70% at 0% 0%, rgba(255,255,255,0.18), transparent 60%),
    radial-gradient(120% 70% at 100% 100%, rgba(255,255,255,0.08), transparent 60%);
  pointer-events: none;
}
#explore-page.explore-course .co-access-eyebrow {
  position: relative; z-index: 1;
  display: inline-block;
  font-size: 14px;
  letter-spacing: .18em;
  font-weight: 500;
  color: #fff;
  margin-bottom: 8px;
}
#explore-page.explore-course .co-access-card h3 {
  position: relative; z-index: 1;
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 18px;
  color: #fff;
}
#explore-page.explore-course .co-access-cta {
  position: relative; z-index: 1;
  display: inline-block;
  padding: 12px 22px;
  background: linear-gradient(90deg, #22b8d6 0%, #1aa1c4 100%);
  color: #fff;
  border-radius: 10px;
  font-weight: 400;
  font-size: 18px;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease;
  box-shadow: 0 8px 22px rgba(63, 176, 202, 0.35);
}
#explore-page.explore-course .co-access-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(63, 176, 202, 0.45);
}

/* ============================================================
   MORE COURSES IN TOPIC
============================================================ */
#explore-page.explore-course .co-more,
#explore-page.explore-lesson .co-more {
  padding: 60px 0 70px;
}
#explore-page .co-more-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--ex-ink);
  margin: 0 0 26px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ex-line);
}
#explore-page .co-mcard {
  display: flex; flex-direction: column;
  background: #fff;
  border: 1px solid var(--ex-line);
  border-radius: 14px;
  overflow: hidden;
  height: 100%;
  transition: transform .35s ease, box-shadow .35s ease;
}
#explore-page .co-mcard:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 44px rgba(11, 17, 23, 0.10);
}
#explore-page .co-mcard-thumb {
  display: block;
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #eef1f6;
  border-bottom: 4px solid var(--ex-teal);
}
/* Per-topic accent for the bottom border of the thumb,
   matched to the badge color inside the same thumb. */
#explore-page .co-mcard-thumb:has(.co-mcard-badge.ex-tx-blue)   { border-bottom-color: var(--ex-blue); }
#explore-page .co-mcard-thumb:has(.co-mcard-badge.ex-tx-orange) { border-bottom-color: var(--ex-orange); }
#explore-page .co-mcard-thumb:has(.co-mcard-badge.ex-tx-pink)   { border-bottom-color: var(--ex-pink); }
#explore-page .co-mcard-thumb:has(.co-mcard-badge.ex-tx-green)  { border-bottom-color: var(--ex-green); }
#explore-page .co-mcard-thumb:has(.co-mcard-badge.ex-tx-violet) { border-bottom-color: var(--ex-violet); }
#explore-page .co-mcard-thumb img {
  width: 100%; height: 100%;
  object-fit: cover; display: block;
  transition: transform .6s ease;
}
#explore-page .co-mcard:hover .co-mcard-thumb img { transform: scale(1.06); }
#explore-page .co-mcard-badge {
  position: absolute;
  top: 12px; left: 12px;
  z-index: 1;
  background: #fff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: .78rem;
  font-weight: 600;
  box-shadow: 0 4px 10px rgba(11, 17, 23, 0.10);
}
#explore-page .co-mcard-body {
  padding: 20px 22px 22px;
  display: flex; flex-direction: column;
  flex: 1; gap: .5rem;
}
#explore-page .co-mcard-body h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--ex-ink);
  margin: 0 0 4px;
}
#explore-page .co-mcard-body h3 a {
  color: inherit;
  text-decoration: none;
}
#explore-page .co-mcard-body h3 a:hover { color: var(--ex-teal); }
#explore-page .co-mcard-body p {
  color: var(--ex-muted);
  line-height: 1.55;
  margin: 0 0 8px;
}
#explore-page .co-mcard-meta {
  display: flex;
  gap: 18px;
  color: var(--ex-muted);
  font-size: .9rem;
  margin-top: auto;
}
#explore-page .co-mcard-meta i { margin-right: .45rem; }
#explore-page .co-mcard-cta {
  display: block;
  text-align: center;
  margin-top: 14px;
  padding: 12px 16px;
  background: var(--ex-teal);
  color: #fff;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s ease, transform .2s ease;
}
#explore-page .co-mcard-cta:hover {
  background: var(--ex-teal-dark);
  transform: translateY(-1px);
}

/* ============================================================
   RESPONSIVE
============================================================ */
@media (max-width: 991.98px) {
  #explore-page.explore-course .co-side-sticky { position: static; }
}
@media (max-width: 575.98px) {
  #explore-page.explore-course .co-hero-meta { gap: 12px 22px; font-size: .92rem; }
  #explore-page.explore-course .co-lcard { grid-template-columns: 1fr; }
  #explore-page.explore-course .co-lcard-thumb { aspect-ratio: 16/9; }
  #explore-page.explore-course .co-lcard-body { padding: 18px 18px 20px; }
}