.courses-page {
  padding: 3rem 0 5rem;
}

.page-header {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 2.5rem;
}

.page-header-inner {
  max-width: 700px;
}

.page-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.3rem 0.75rem;
  background: var(--color-primary-glow);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1rem;
}

.page-title {
  font-size: 2.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.page-desc {
  color: var(--color-text-2);
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0;
}

/* Filters */
.courses-filters {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.filter-btn {
  padding: 0.4rem 0.875rem;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-2);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-sans);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-glow);
}

/* All courses grid */
.all-courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

/* Category sections */
.category-section {
  margin-bottom: 3.5rem;
}

.category-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-3);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.category-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}

@media (max-width: 640px) {
  .page-title { font-size: 1.75rem; }
  .all-courses-grid { grid-template-columns: 1fr; }
}