/* Learning Page Styles */

.learning-page {
  background: var(--gray-50);
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}

/* Learning Hero Section */
.learning-hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 4rem 0;
  margin-bottom: 3rem;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(45deg, #fff, #e2e8f0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.95;
}

/* Search Container */
.search-container {
  margin-top: 3rem;
}

.search-form {
  display: grid;
  grid-template-columns: 2fr 1fr auto;
  gap: 1rem;
  background: white;
  padding: 1rem;
  border-radius: 16px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
  max-width: 900px;
  margin: 0 auto;
}

.search-input-group,
.category-select-group {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon {
  position: absolute;
  left: 1rem;
  color: var(--gray-400);
  z-index: 2;
}

.search-input,
.category-select {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.5rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: 1rem;
  transition: var(--transition);
}

.category-select {
  padding-left: 1rem;
  cursor: pointer;
}

.search-input:focus,
.category-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.search-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.875rem 2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.search-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Learning Content Layout */
.learning-content {
  margin-bottom: 4rem;
}

.learning-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 3rem;
}

/* Sidebar Filters */
.learning-sidebar {
  background: white;
  padding: 2rem;
  border-radius: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.filter-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
  color: var(--gray-900);
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-200);
}

.filter-group {
  margin-bottom: 2rem;
}

.filter-label {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--gray-800);
}

.filter-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-option {
  display: flex;
  align-items: center;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--border-radius);
  transition: var(--transition);
  position: relative;
}

.filter-option:hover {
  background: var(--gray-50);
}

.filter-option input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 20px;
  height: 20px;
  border: 2px solid var(--gray-300);
  border-radius: 4px;
  margin-right: 0.75rem;
  position: relative;
  transition: var(--transition);
}

.filter-option input[type="checkbox"]:checked + .checkmark {
  background: var(--primary-color);
  border-color: var(--primary-color);
}

.filter-option input[type="checkbox"]:checked + .checkmark::after {
  content: "✓";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-weight: bold;
  font-size: 12px;
}

.clear-filters-btn {
  width: 100%;
  background: var(--gray-100);
  color: var(--gray-700);
  border: 1px solid var(--gray-300);
  padding: 0.75rem;
  border-radius: var(--border-radius);
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.clear-filters-btn:hover {
  background: var(--gray-200);
  border-color: var(--gray-400);
}

/* Results Section */
.results-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
}

.results-info {
  flex: 1;
}

.results-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

.results-count {
  color: var(--gray-600);
  font-size: 1rem;
  margin: 0;
}

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

.sort-select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  background: white;
  font-size: 0.875rem;
  cursor: pointer;
  transition: var(--transition);
}

.sort-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.view-toggle {
  display: flex;
  background: white;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  overflow: hidden;
}

.view-btn {
  background: none;
  border: none;
  padding: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  color: var(--gray-500);
}

.view-btn:hover {
  background: var(--gray-50);
}

.view-btn.active {
  background: var(--primary-color);
  color: white;
}

/* Courses Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.courses-grid.list-layout {
  grid-template-columns: 1fr;
}

.courses-grid.list-layout .course-card {
  display: flex;
  flex-direction: row;
  align-items: stretch;
}

.courses-grid.list-layout .course-image {
  width: 250px;
  flex-shrink: 0;
}

.courses-grid.list-layout .course-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Course Card */
.course-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
  position: relative;
}

.course-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.course-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.course-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  padding: 0.375rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
}

.course-badge.free {
  background: var(--success-color);
}

.course-badge.paid {
  background: var(--primary-color);
}

.favorite-btn {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  backdrop-filter: blur(10px);
}

.favorite-btn:hover {
  background: white;
  color: var(--danger-color);
}

.course-content {
  padding: 1.5rem;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.course-category {
  background: rgba(99, 102, 241, 0.1);
  color: var(--primary-color);
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

.course-level {
  padding: 0.25rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  color: white;
}

.course-level.beginner {
  background: var(--success-color);
}

.course-level.intermediate {
  background: var(--warning-color);
}

.course-level.advanced {
  background: var(--danger-color);
}

.course-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--gray-900);
  line-height: 1.3;
}

.course-description {
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 1rem;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-instructor {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.instructor-avatar {
  width: 32px;
  height: 32px;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 600;
}

.instructor-name {
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
}

.course-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.rating {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.stars {
  display: flex;
  gap: 0.125rem;
  color: #fbbf24;
}

.rating-text {
  color: var(--gray-600);
  font-size: 0.75rem;
}

.course-duration {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--gray-600);
  font-size: 0.75rem;
}

.course-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
}

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

.price {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.original-price {
  font-size: 0.875rem;
  color: var(--gray-500);
  text-decoration: line-through;
}

.enroll-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.enroll-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* Load More */
.load-more-container {
  text-align: center;
  margin-top: 3rem;
}

.load-more-btn {
  background: white;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  padding: 1rem 2rem;
  border-radius: var(--border-radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.load-more-btn:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 1024px) {
  .learning-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .learning-sidebar {
    position: static;
    order: 2;
  }

  .courses-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.5rem;
  }

  .search-form {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .results-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .controls {
    width: 100%;
    justify-content: space-between;
  }

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

  .courses-grid.list-layout .course-card {
    flex-direction: column;
  }

  .courses-grid.list-layout .course-image {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .learning-hero {
    padding: 2rem 0;
  }

  .hero-title {
    font-size: 2rem;
  }

  .learning-sidebar {
    padding: 1.5rem;
  }

  .course-card {
    margin: 0 -1rem;
    border-radius: 0;
  }

  .course-content {
    padding: 1rem;
  }

  .filter-group {
    margin-bottom: 1.5rem;
  }

  .course-stats {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}