/* Course Detail Specific Styles */

/* Course Hero Section */
.course-hero {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
}

.course-hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.course-breadcrumb {
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.course-breadcrumb a {
  color: var(--muted-foreground);
  text-decoration: none;
}

.course-breadcrumb a:hover {
  color: var(--primary);
}

.course-breadcrumb span {
  color: var(--muted-foreground);
  margin: 0 0.5rem;
}

.course-level-badge {
  display: inline-block;
  background-color: var(--primary);
  color: var(--primary-foreground);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.course-hero h1 {
  font-size: 2.5rem;
  color: var(--foreground);
  margin-bottom: 1rem;
}

.course-subtitle {
  font-size: 1.2rem;
  color: var(--muted-foreground);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.course-meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.meta-item i {
  color: var(--primary);
}

.course-price {
  margin-bottom: 2rem;
}

.current-price {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
}

.original-price {
  font-size: 1.2rem;
  color: var(--muted-foreground);
  text-decoration: line-through;
  margin-left: 1rem;
}

.course-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.course-preview {
  position: sticky;
  top: 100px;
}

.course-image {
  position: relative;
  margin-bottom: 2rem;
  border-radius: var(--radius);
  overflow: hidden;
}

.course-image img {
  width: 100%;
  height: auto;
}

.play-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background-color: rgba(5, 150, 105, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.play-button:hover {
  background-color: var(--primary);
  transform: translate(-50%, -50%) scale(1.1);
}

.play-button i {
  color: white;
  font-size: 2rem;
  margin-left: 5px;
}

.course-highlights {
  background-color: var(--card);
  padding: 2rem;
  border-radius: var(--radius);
}

.course-highlights h3 {
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.course-highlights ul {
  list-style: none;
}

.course-highlights li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted-foreground);
}

.course-highlights i {
  color: var(--primary);
  font-size: 0.875rem;
}

/* Course Content Tabs */
.course-content {
  padding: 80px 0;
}

.content-tabs {
  max-width: 1200px;
  margin: 0 auto;
}

.tab-nav {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 3rem;
  gap: 2rem;
}

.tab-btn {
  background: none;
  border: none;
  padding: 1rem 0;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--muted-foreground);
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
}

.tab-btn.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-btn:hover {
  color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
}

.main-content {
  max-width: none;
}

.course-description h2 {
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.course-description p {
  color: var(--muted-foreground);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.course-objectives {
  margin: 3rem 0;
}

.course-objectives h3 {
  color: var(--foreground);
  margin-bottom: 2rem;
}

.objectives-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.objective-item {
  display: flex;
  gap: 1rem;
  align-items: start;
}

.objective-item i {
  color: var(--primary);
  font-size: 1.5rem;
  margin-top: 0.25rem;
}

.objective-item h4 {
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.objective-item p {
  color: var(--muted-foreground);
  margin: 0;
}

.course-requirements {
  margin: 3rem 0;
}

.course-requirements h3 {
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.course-requirements ul {
  list-style: none;
}

.course-requirements li {
  margin-bottom: 0.75rem;
  color: var(--muted-foreground);
  position: relative;
  padding-left: 1.5rem;
}

.course-requirements li::before {
  content: "•";
  color: var(--primary);
  position: absolute;
  left: 0;
  font-weight: bold;
}

.sidebar-content {
  position: sticky;
  top: 100px;
}

.course-features,
.course-stats {
  background-color: var(--card);
  padding: 2rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
}

.course-features h3,
.course-stats h3 {
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--muted-foreground);
}

.feature-item i {
  color: var(--primary);
  width: 20px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
}

.stat-label {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

/* Curriculum Styles */
.curriculum-content {
  max-width: 800px;
}

.curriculum-intro {
  color: var(--muted-foreground);
  font-size: 1.1rem;
  margin-bottom: 3rem;
}

.curriculum-modules {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.module-item {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.module-item.locked {
  opacity: 0.6;
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  background-color: var(--card);
  cursor: pointer;
}

.module-info h3 {
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.module-duration {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.module-toggle {
  background: none;
  border: none;
  color: var(--primary);
  font-size: 1.2rem;
  cursor: pointer;
  transition: transform 0.3s ease;
}

.module-content {
  display: none;
  padding: 0 1.5rem 1.5rem;
}

.lesson-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--muted-foreground);
}

.lesson-item:last-child {
  border-bottom: none;
}

.lesson-item.locked {
  opacity: 0.5;
}

.lesson-item i {
  color: var(--primary);
  margin-right: 0.75rem;
}

.lesson-duration {
  font-size: 0.875rem;
  color: var(--muted-foreground);
}

.show-more-modules {
  text-align: center;
  margin-top: 2rem;
}

/* Instructor Styles */
.instructor-profile {
  max-width: 800px;
}

.instructor-header {
  display: flex;
  gap: 2rem;
  margin-bottom: 3rem;
  align-items: start;
}

.instructor-avatar img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}

.instructor-info h2 {
  color: var(--foreground);
  margin-bottom: 0.5rem;
}

.instructor-title {
  color: var(--primary);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

.instructor-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.instructor-stats .stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.instructor-stats .stat i {
  color: var(--primary);
}

.instructor-bio {
  margin-bottom: 3rem;
}

.instructor-bio h3 {
  color: var(--foreground);
  margin-bottom: 1.5rem;
}

.instructor-bio p {
  color: var(--muted-foreground);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.instructor-credentials h3 {
  color: var(--foreground);
  margin-bottom: 2rem;
}

.credentials-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.credential-item {
  display: flex;
  gap: 1rem;
  align-items: start;
}

.credential-item i {
  color: var(--primary);
  font-size: 1.5rem;
  margin-top: 0.25rem;
}

.credential-item h4 {
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.credential-item p {
  color: var(--muted-foreground);
  margin: 0;
}

/* Reviews Styles */
.reviews-section {
  max-width: 800px;
}

.reviews-header {
  margin-bottom: 3rem;
}

.reviews-summary {
  margin-top: 2rem;
}

.rating-overview {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3rem;
  align-items: start;
}

.overall-rating {
  text-align: center;
}

.rating-number {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
}

.stars {
  margin: 0.5rem 0;
}

.stars i {
  color: #fbbf24;
  font-size: 1.2rem;
}

.rating-count {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.rating-breakdown {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.rating-bar {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
}

.rating-bar span:first-child {
  width: 60px;
  color: var(--muted-foreground);
}

.rating-bar span:last-child {
  width: 40px;
  color: var(--muted-foreground);
}

.bar {
  flex: 1;
  height: 8px;
  background-color: var(--border);
  border-radius: 4px;
  overflow: hidden;
}

.fill {
  height: 100%;
  background-color: #fbbf24;
  transition: width 0.3s ease;
}

.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 3rem;
}

.review-item {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
}

.review-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 1rem;
}

.reviewer-info {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.reviewer-info img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.reviewer-info h4 {
  color: var(--foreground);
  margin-bottom: 0.25rem;
}

.reviewer-title {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.review-meta {
  text-align: right;
}

.review-meta .stars {
  margin-bottom: 0.5rem;
}

.review-date {
  color: var(--muted-foreground);
  font-size: 0.875rem;
}

.review-content p {
  color: var(--muted-foreground);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.review-actions {
  display: flex;
  gap: 1rem;
}

.helpful-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--muted-foreground);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.helpful-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.helpful-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.load-more-reviews {
  text-align: center;
}

/* Related Courses */
.related-courses {
  padding: 80px 0;
  background-color: var(--muted);
}

/* Responsive Design */
@media (max-width: 768px) {
  .course-hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .course-hero h1 {
    font-size: 2rem;
  }

  .course-meta-info {
    flex-direction: column;
    gap: 1rem;
  }

  .course-actions {
    flex-direction: column;
  }

  .content-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .tab-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .objectives-grid {
    grid-template-columns: 1fr;
  }

  .instructor-header {
    flex-direction: column;
    text-align: center;
  }

  .instructor-stats {
    grid-template-columns: 1fr;
  }

  .rating-overview {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
  }

  .review-header {
    flex-direction: column;
    gap: 1rem;
  }

  .review-meta {
    text-align: left;
  }
}

@media (max-width: 480px) {
  .course-hero {
    padding: 100px 0 60px;
  }

  .course-hero h1 {
    font-size: 1.75rem;
  }

  .course-actions {
    gap: 0.75rem;
  }

  .btn-large {
    padding: 12px 20px;
    font-size: 0.95rem;
  }

  .module-header {
    padding: 1rem;
  }

  .review-item {
    padding: 1.5rem;
  }
}