/* course.css: course page specific styling */

.course-header {
  margin-bottom: 8px;
}

.back-link {
  font-size: 0.85rem;
  color: #4b5563;
}

.back-link:hover {
  color: #111827;
}

.course-header-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-top: 12px;
  gap: 16px;
}

.course-month-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: #6b7280;
  font-weight: 600;
  margin: 0 0 4px;
}

.course-title {
  font-size: 1.6rem;
  margin: 0 0 4px;
}

.course-tagline {
  margin: 0;
  color: #4b5563;
}

.course-header-badge {
  align-self: flex-start;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  background: #f97316;
  color: #fff7ed;
}

/* Progress */

.course-progress {
  margin-top: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8rem;
  color: #4b5563;
}

.course-progress-track {
  flex: 1;
  height: 6px;
  background: #e5e7eb;
  border-radius: 999px;
  overflow: hidden;
}

.course-progress-bar {
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, #f97316, #14b8a6);
  transition: width 0.25s ease-out;
}

.course-progress-label {
  min-width: 72px;
  text-align: right;
}

/* Content */

.course-content h1,
.course-content h2,
.course-content h3 {
  margin-top: 1.4rem;
  margin-bottom: 0.4rem;
}

.course-content h1 {
  font-size: 1.4rem;
}

.course-content h2 {
  font-size: 1.2rem;
}

.course-content h3 {
  font-size: 1rem;
  color: #111827;
}

.course-content p {
  margin: 0.4rem 0;
  color: #374151;
}

.course-content ul {
  padding-left: 1.2rem;
}

.course-content li {
  margin: 0.2rem 0;
}

/* Sidebar */

.sidebar-heading {
  font-size: 0.95rem;
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.course-toc {
  font-size: 0.85rem;
}

.course-toc ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.course-toc li {
  margin: 0.25rem 0;
}

.course-toc a {
  color: #374151;
}

.course-toc a:hover {
  color: #111827;
}