/* --------------------------------------------------------------------------
   SCROLL OFFSET — anchor links account for sticky header
   -------------------------------------------------------------------------- */
.course-spotlight,
.course-group,
.course-card {
  scroll-margin-top: calc(var(--nav-height) + var(--space-md));
}

/* Subtle highlight when navigated to via sidebar */
.course-card:target,
.course-spotlight:target .course-card--spotlight {
  border-color: #aaaaaa;
  box-shadow: 0 0 0 3px rgba(17, 17, 17, 0.06);
}


/* --------------------------------------------------------------------------
   FEATURED SPOTLIGHT — hero card for the primary course (Python)
   -------------------------------------------------------------------------- */
.course-spotlight {
  margin-bottom: var(--space-xl);
}

.course-spotlight__eyebrow {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}


/* --------------------------------------------------------------------------
   COURSE GROUPS — labeled sections with consistent grids
   -------------------------------------------------------------------------- */
.course-group {
  margin-bottom: var(--space-xl);
}

.course-group:last-child {
  margin-bottom: 0;
}

.course-group__header {
  margin-bottom: var(--space-md);
}

.course-group__title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.course-group__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Reusable grids inside each group */
.course-grid {
  display: grid;
  gap: var(--space-md);
  align-items: stretch;
}

.course-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.course-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}


/* 
   COURSE CARD — shared card shell
    */
.course-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: 1.25rem;
  background-color: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 3px rgba(17, 17, 17, 0.04);
  transition:
    transform var(--transition),
    box-shadow var(--transition),
    border-color var(--transition);
}

.course-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(17, 17, 17, 0.07);
  border-color: #c4c4c4;
}

/* Spotlight variant — larger featured card at top */
.course-card--spotlight {
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: #ffffff;
  border-color: #bdbdbd;
  box-shadow: 0 4px 20px rgba(17, 17, 17, 0.06);
}

.course-card--spotlight:hover {
  box-shadow: 0 10px 32px rgba(17, 17, 17, 0.1);
}

.course-card--spotlight .course-card__header {
  align-items: flex-start;
}

.course-card--spotlight .course-card__icon {
  width: 3.5rem;
  height: 3.5rem;
  font-size: 0.9375rem;
  background-color: var(--bg-dark);
  color: var(--bg-light);
  border-color: var(--bg-dark);
}

.course-card--spotlight .course-card__title {
  font-size: 1.375rem;
}

.course-card--spotlight .course-card__desc {
  font-size: 0.9375rem;
  max-width: 36rem;
}

.course-card--spotlight .course-card__details {
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.course-card--spotlight .course-card__cta {
  align-self: flex-start;
  min-width: 10rem;
}


/* Card top row — icon + title side by side */
.course-card__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.course-card__intro {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-width: 0;
}

/* Icon placeholder */
.course-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  flex-shrink: 0;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.course-card__title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text-primary);
}

.course-card__desc {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-secondary);
  flex: 1;
}

/* Meta row — level, dot, duration + badge */
.course-card__details {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 0.25rem;
}

.course-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.course-card__level,
.course-card__duration {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.course-card__level {
  color: var(--text-primary);
}

.course-card__dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background-color: var(--border-color);
  flex-shrink: 0;
}

.course-card__badge {
  padding: 0.2rem 0.55rem;
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  white-space: nowrap;
}

/* CTA button */
.course-card__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-primary);
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: 999px;
  transition:
    background-color var(--transition),
    color var(--transition),
    border-color var(--transition);
}

.course-card__cta:hover {
  background-color: var(--bg-dark);
  border-color: var(--bg-dark);
  color: var(--bg-light);
}

.course-card__cta--primary {
  background-color: var(--bg-dark);
  border-color: var(--bg-dark);
  color: var(--bg-light);
}

.course-card__cta--primary:hover {
  opacity: 0.88;
  background-color: var(--bg-dark);
  border-color: var(--bg-dark);
  color: var(--bg-light);
}


/* --------------------------------------------------------------------------
   RESPONSIVE — grids collapse cleanly on smaller screens
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  .course-grid--3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .course-grid--3,
  .course-grid--2 {
    grid-template-columns: 1fr;
  }

  .course-card--spotlight {
    padding: var(--space-md);
  }

  .course-card--spotlight .course-card__cta {
    width: 100%;
    align-self: stretch;
  }
}