/* Courses Styles */

/* Course Index Page */
.courses__header {
  margin-bottom: 2rem;
  text-align: center;
}

.courses__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0 0 0.5rem 0;
  color: var(--gray-900);
}

.courses__subtitle {
  font-size: var(--font-size-lg);
  margin: 0;
}

.courses__filters {
  margin-bottom: 2rem;
}

.filters-form {
  margin: 0;
}

.filters-grid {
  display: grid;
  grid-template-columns: 200px 200px 1fr;
  gap: 2rem;
  align-items: end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.filter-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
}

.filter-select {
  padding: 0.5rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  background: var(--white);
}

.filter-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-tag {
  padding: 0.25rem 0.75rem;
  background: var(--gray-100);
  color: var(--gray-700);
  text-decoration: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: all 0.2s;
}

.filter-tag:hover {
  background: var(--gray-200);
}

.filter-tag--active {
  background: var(--primary-color);
  color: var(--white);
}

/* Course Cards */
.course-card {
  background: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.course-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.course-card__header {
  padding: 1.5rem 1.5rem 0 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

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

.language-flag {
  font-size: 1.25rem;
}

.language-flag--lg {
  font-size: 2rem;
}

.language-name {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--gray-700);
}

.difficulty-badge {
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.difficulty-badge--sm {
  padding: 0.125rem 0.5rem;
  font-size: 0.75rem;
}

.difficulty-badge--beginner {
  background: color-mix(in srgb, var(--secondary-color) 15%, transparent);
  color: var(--secondary-color);
}

.difficulty-badge--intermediate {
  background: color-mix(in srgb, var(--accent-color) 15%, transparent);
  color: var(--accent-color);
}

.difficulty-badge--advanced {
  background: color-mix(in srgb, var(--danger-color) 15%, transparent);
  color: var(--danger-color);
}
.dark .profile__header {
    background: var(--bg-primary) !important;
  border: 1px solid var(--border-color) !important;
  box-shadow: var(--shadow) !important;
}

.dark .profile__header:hover {
  box-shadow: var(--shadow-lg) !important;
}

.dark .course-card {
  background: var(--bg-primary) !important;
  border: 1px solid var(--border-color) !important;
  box-shadow: var(--shadow) !important;
}

.dark .course-card:hover {
  box-shadow: var(--shadow-lg) !important;
}

.course-card__content {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.course-card__title {
  margin: 0 0 0.75rem 0;
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.course-card__link {
  text-decoration: none;
  color: var(--gray-900);
  transition: color 0.2s;
}

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

.course-card__description {
  color: var(--gray-600);
  line-height: 1.5;
  margin: 0 0 1rem 0;
  flex: 1;
}

.course-card__stats {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

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

.course-stat__icon {
  font-size: 1rem;
}

.course-card__progress {
  margin-bottom: 1rem;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.progress-text {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--gray-700);
}

.progress-percentage {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--primary-color);
}

.course-card__footer {
  padding: 0 1.5rem 1.5rem 1.5rem;
}

/* Language Grid */
.language-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.language-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  overflow: hidden;
  transition: border-color 0.2s;
}

.language-item:hover {
  border-color: var(--primary-color);
}

.language-link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  text-decoration: none;
  color: inherit;
}

.language-item__flag {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.language-item__name {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0 0 0.25rem 0;
  color: var(--gray-900);
}

.language-item__courses {
  margin: 0;
}

/* Course Detail Page */
.course-header {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  padding: 3rem 0;
  margin-bottom: 2rem;
}

.course-header__content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

.course-header__main {
  flex: 1;
}

.course-header__breadcrumb {
  margin-bottom: 1rem;
}

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

.course-header__language .language-name {
  color: var(--text-primary);
  font-size: var(--font-size-base);
  transition: color 0.2s ease;
}

.course-header__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin: 0 0 1rem 0;
}

.course-header__description {
  font-size: var(--font-size-lg);
  line-height: 1.6;
  margin: 0 0 1.5rem 0;
  opacity: 0.95;
}

.course-header__meta {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.course-meta-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--font-size-base);
}

.course-meta-icon {
  font-size: 1.25rem;
}

.course-header__actions {
  flex-shrink: 0;
  min-width: 300px;
}

.enrollment-status {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
}

.enrollment-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.enrollment-badge__icon {
  font-size: 1.25rem;
}

.course-progress {
  margin-bottom: 1.5rem;
}

.course-progress__info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.course-progress__label {
  font-size: var(--font-size-sm);
  opacity: 0.9;
}

.course-progress__percentage {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.progress-bar--lg {
  height: 12px;
}

.progress-bar--sm {
  height: 6px;
}

.enrollment-form,
.auth-prompt {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  border-radius: var(--border-radius-lg);
  padding: 2rem;
  text-align: center;
}

.enrollment-note,
.auth-note {
  margin: 0;
  opacity: 0.8;
}

/* Lessons List */
.lessons-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lesson-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  transition: border-color 0.2s, background-color 0.2s;
}

.lesson-item:hover {
  border-color: var(--primary-color);
  background-color: var(--gray-50);
}

.lesson-item--completed {
  background-color: color-mix(in srgb, var(--secondary-color) 5%, transparent);
  border-color: color-mix(in srgb, var(--secondary-color) 20%, transparent);
}

.lesson-item__number {
  flex-shrink: 0;
}

.lesson-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gray-200);
  color: var(--gray-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.lesson-number--completed {
  background: var(--secondary-color);
  color: var(--white);
}

.lesson-item__content {
  flex: 1;
}

.lesson-item__title {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin: 0 0 0.5rem 0;
}

.lesson-link {
  text-decoration: none;
  color: var(--gray-900);
  transition: color 0.2s;
}

.lesson-link:hover {
  color: var(--primary-color);
}

.lesson-item__description {
  margin: 0 0 0.75rem 0;
  line-height: 1.4;
}

.lesson-item__meta {
  display: flex;
  gap: 1rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.lesson-meta {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--gray-500);
}

.lesson-meta__icon {
  font-size: 0.875rem;
}

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

.lesson-item__action {
  flex-shrink: 0;
  align-self: flex-start;
}

.lesson-locked {
  font-style: italic;
}

/* Sidebar */
.objectives-list,
.prerequisites-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.objective-item,
.prerequisite-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.objective-icon {
  color: var(--secondary-color);
  font-weight: 600;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.prerequisite-icon {
  color: var(--gray-500);
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.objective-text,
.prerequisite-text {
  line-height: 1.5;
}

.stats-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stat-label {
  color: var(--gray-600);
  font-size: var(--font-size-sm);
}

.stat-value {
  font-weight: 600;
  color: var(--gray-900);
  font-size: var(--font-size-sm);
}

.related-courses {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.related-course {
  padding: 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--border-radius);
  transition: border-color 0.2s;
}

.related-course:hover {
  border-color: var(--primary-color);
}

.related-course__link {
  text-decoration: none;
  color: inherit;
}

.related-course__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin: 0 0 0.25rem 0;
  color: var(--gray-900);
}

.related-course__level {
  margin: 0;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .course-header__content {
    flex-direction: column;
    gap: 2rem;
  }
  
  .course-header__actions {
    min-width: auto;
    width: 100%;
  }
}

@media (max-width: 768px) {
  .filters-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .course-header {
    padding: 2rem 0;
  }
  
  .course-header__title {
    font-size: var(--font-size-2xl);
  }
  
  .course-header__meta {
    gap: 1rem;
  }
  
  .course-meta-item {
    font-size: var(--font-size-sm);
  }
  
  .lesson-item {
    flex-direction: column;
    gap: 1rem;
  }
  
  .lesson-item__action {
    align-self: stretch;
  }
  
  .lesson-item__action .btn {
    width: 100%;
  }
  
  .language-grid {
    grid-template-columns: 1fr;
  }
}