/**
 * TubeRaker Curriculum Module Styles
 * Styles for course wizard, course list, course view, lessons, and progress
 */

/* ===== Common Styles ===== */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-2xl);
  gap: var(--spacing-lg);
}

.page-header-content {
  flex: 1;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin: 0;
}

.page-header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
}

.section-actions {
  display: flex;
  gap: var(--spacing-sm);
  align-items: center;
}

/* ===== Wizard Styles ===== */
.curriculum-wizard {
  max-width: 56.25rem;
  margin: 0 auto;
}

.wizard-header {
  text-align: center;
  margin-bottom: var(--spacing-3xl);
}

.wizard-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xl) 0;
}

.wizard-progress-container {
  margin-top: var(--spacing-xl);
}

.wizard-progress {
  width: 100%;
  height: 0.25rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.wizard-progress-bar {
  height: 100%;
  background: var(--color-brand-primary);
  transition: width var(--transition-slow);
  width: 0;
}

.wizard-steps-indicator {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-sm);
}

.wizard-step-dot {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  position: relative;
}

.wizard-step-dot .step-number {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  color: var(--text-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
}

.wizard-step-dot.active .step-number {
  background: var(--color-brand-primary);
  color: white;
  box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.2);
}

.wizard-step-dot.completed .step-number {
  background: var(--color-success);
  color: white;
}

.wizard-step-dot .step-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

.wizard-step-dot.active .step-label {
  color: var(--text-primary);
}

.wizard-step {
  display: none;
  animation: fadeIn var(--transition-base);
}

.wizard-step.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(0.625rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.wizard-step-content {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  min-height: 25rem;
}

.wizard-step-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.wizard-step-header h2 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm) 0;
}

.wizard-step-header p {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0;
}

.wizard-step-actions {
  display: flex;
  justify-content: space-between;
  gap: var(--spacing-md);
}

/* Step 1: Topic Selection */
.suggested-topics {
  margin-top: var(--spacing-2xl);
}

.suggested-topics-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-md) 0;
}

.suggested-topics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12.5rem, 1fr));
  gap: var(--spacing-md);
}

.topic-chip {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.topic-chip:hover {
  background: var(--bg-hover);
  border-color: var(--color-brand-primary);
  transform: translateY(-0.125rem);
}

.topic-chip svg {
  flex-shrink: 0;
  color: var(--color-brand-primary);
}

/* Step 2: Configuration */
.difficulty-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.375rem, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.difficulty-option {
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 0.125rem solid var(--border-primary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
}

.difficulty-option:hover {
  background: var(--bg-hover);
  border-color: var(--border-secondary);
}

.difficulty-option.active {
  background: var(--bg-tertiary);
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 0.1875rem rgba(59, 130, 246, 0.1);
}

.difficulty-option-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.difficulty-option-label {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.difficulty-option-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.form-range {
  width: 100%;
  height: 0.375rem;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  outline: none;
  appearance: none;
  cursor: pointer;
}

.form-range::-webkit-slider-thumb {
  appearance: none;
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-brand-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-range::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.2);
}

.form-range::-moz-range-thumb {
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-brand-primary);
  border-radius: var(--radius-full);
  cursor: pointer;
  border: none;
}

.course-estimate {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.estimate-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.estimate-icon {
  font-size: 2rem;
}

.estimate-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.estimate-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.focus-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  gap: var(--spacing-md);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.checkbox-label:hover {
  background: var(--bg-hover);
}

.checkbox-label input[type="checkbox"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

/* Step 3: Syllabus Preview */
.syllabus-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  gap: var(--spacing-md);
}

.syllabus-modules {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.syllabus-module {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
}

.syllabus-module-header {
  margin-bottom: var(--spacing-md);
}

.syllabus-module-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.syllabus-module-title:focus {
  background: var(--bg-hover);
  outline: 0.125rem solid var(--color-brand-primary);
}

.syllabus-lessons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.syllabus-lesson {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
}

.syllabus-lesson-number {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.syllabus-lesson-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.syllabus-lesson-title {
  width: 100%;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.syllabus-lesson-title:focus {
  background: var(--bg-secondary);
  border-color: var(--color-brand-primary);
  outline: none;
}

.syllabus-lesson-objective {
  width: 100%;
  min-height: 3rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
  resize: vertical;
  transition: all var(--transition-fast);
}

.syllabus-lesson-objective:focus {
  background: var(--bg-secondary);
  border-color: var(--color-brand-primary);
  outline: none;
}

.syllabus-actions {
  margin-top: var(--spacing-lg);
  text-align: center;
}

/* Step 4: Progress */
.generation-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-2xl);
  padding: var(--spacing-2xl) 0;
}

.progress-circle {
  position: relative;
  width: 12.5rem;
  height: 12.5rem;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring-circle-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 8;
}

.progress-ring-circle {
  fill: none;
  stroke: var(--color-brand-primary);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 565.48;
  stroke-dashoffset: 565.48;
  transition: stroke-dashoffset var(--transition-slow);
}

.progress-percentage {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.progress-status {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.progress-status-text {
  font-size: var(--font-size-lg);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.progress-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
  gap: var(--spacing-lg);
  width: 100%;
  max-width: 37.5rem;
}

.progress-detail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.progress-detail-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.progress-detail-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* Step 5: Results */
.success-icon {
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg) auto;
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-full);
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
}

.course-summary-card {
  margin-bottom: var(--spacing-xl);
}

.course-summary-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

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

.summary-stat-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
}

.summary-stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* Gap Warning */
.gap-warning,
.gap-warning-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid var(--color-error);
  border-left: 0.25rem solid var(--color-error);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
}

.gap-warning-banner {
  align-items: center;
}

.gap-warning-icon {
  flex-shrink: 0;
  color: var(--color-error);
}

.gap-warning-content {
  flex: 1;
}

.gap-warning-content h3,
.gap-warning-content strong {
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.gap-warning-content p {
  color: var(--text-secondary);
  margin: var(--spacing-xs) 0;
}

.gap-warning-content ul {
  margin: var(--spacing-sm) 0 0 var(--spacing-lg);
  color: var(--text-secondary);
}

.gap-warning-action {
  flex-shrink: 0;
}

/* Course Preview */
.course-preview-modules,
.preview-module {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.preview-module h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm) 0;
}

.preview-lessons {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.preview-lesson {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
}

.preview-lesson-gap {
  background: rgba(239, 68, 68, 0.1);
  border-left: 0.1875rem solid var(--color-error);
}

.preview-lesson-number {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.preview-lesson-title {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
}

.preview-gap-badge {
  background: var(--color-error);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.preview-more {
  text-align: center;
  padding: var(--spacing-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

/* ===== Course Index ===== */
.courses-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.toolbar-filters {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-chip {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-chip:hover {
  background: var(--bg-hover);
}

.filter-chip.active {
  background: var(--color-brand-primary);
  color: white;
  border-color: var(--color-brand-primary);
}

.filter-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.25rem;
  height: 1.25rem;
  padding: 0 0.25rem;
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.filter-chip.active .filter-count {
  background: rgba(255, 255, 255, 0.3);
}

.toolbar-sort {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.form-select {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  cursor: pointer;
}

.form-select-sm {
  padding: 0.375rem var(--spacing-sm);
  font-size: var(--font-size-sm);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  text-align: center;
}

.empty-state-icon {
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-lg);
}

.empty-state-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-sm) 0;
}

.empty-state-message {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  margin: 0 0 var(--spacing-xl) 0;
}

/* Courses Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(20rem, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.course-card {
  display: flex;
  flex-direction: column;
}

.course-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.course-card-badges {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.difficulty-badge {
  text-transform: capitalize;
}

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

.difficulty-intermediate {
  background: var(--color-brand-primary);
}

.difficulty-advanced {
  background: var(--color-warning);
}

.difficulty-expert {
  background: var(--color-error);
}

.status-badge {
  text-transform: capitalize;
}

.status-draft {
  background: var(--bg-tertiary);
}

.status-in_progress {
  background: var(--color-brand-primary);
}

.status-completed {
  background: var(--color-success);
}

.course-card-content {
  flex: 1;
}

.course-card-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
  line-height: var(--line-height-tight);
}

.course-card-topic {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.course-card-progress {
  margin-bottom: var(--spacing-md);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-xs);
}

.progress-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.progress-value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.course-card-stats {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.stat svg {
  flex-shrink: 0;
  color: var(--text-tertiary);
}

.stat-warning {
  color: var(--color-warning);
}

.stat-warning svg {
  color: var(--color-warning);
}

.course-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.course-card-date {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

/* Loading State */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  gap: var(--spacing-md);
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.pagination-info {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* ===== Course View ===== */
.course-header {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.course-header-back {
  margin-bottom: var(--spacing-md);
}

.course-header-content {
  margin-bottom: var(--spacing-lg);
}

.course-header-main {
  margin-bottom: var(--spacing-md);
}

.course-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.course-topic {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin: 0;
}

.course-header-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.meta-item svg {
  color: var(--text-tertiary);
}

.course-header-progress {
  margin-bottom: var(--spacing-md);
}

.course-header-actions {
  display: flex;
  gap: var(--spacing-sm);
}

/* Modules Accordion */
.modules-accordion {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.module {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.module-header:hover {
  background: var(--bg-hover);
}

.module-header-left {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  flex: 1;
}

.module-toggle {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.module-toggle:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.module.expanded .module-toggle {
  transform: rotate(180deg);
}

.module-toggle-icon {
  transition: transform var(--transition-base);
}

.module-info {
  flex: 1;
}

.module-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
  display: flex;
  align-items: baseline;
  gap: var(--spacing-xs);
}

.module-order {
  color: var(--color-brand-primary);
}

.module-description {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

.module-header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.module-status {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

.module-progress-ring {
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
}

.module-progress-ring svg {
  transform: rotate(-90deg);
}

.progress-ring-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 4;
}

.progress-ring-fg {
  fill: none;
  stroke: var(--color-brand-primary);
  stroke-width: 4;
  stroke-linecap: round;
  transition: stroke-dashoffset var(--transition-base);
}

.progress-ring-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.module-body {
  display: none;
  padding: 0 var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
}

.module.expanded .module-body {
  display: block;
}

/* Lessons List */
.lessons-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.lesson {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.lesson:hover {
  background: var(--bg-hover);
  border-color: var(--border-secondary);
  transform: translateX(0.25rem);
}

.lesson--gap {
  background: rgba(239, 68, 68, 0.05);
  border-left: 0.1875rem solid var(--color-error);
}

.lesson--completed {
  background: rgba(16, 185, 129, 0.05);
  border-left: 0.1875rem solid var(--color-success);
}

.lesson-order {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.lesson-thumbnail {
  position: relative;
  flex-shrink: 0;
  width: 7.5rem;
  height: 4.25rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-tertiary);
}

.lesson-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lesson-thumbnail--gap {
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(239, 68, 68, 0.1);
}

.lesson-gap-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 0.25rem 0.5rem;
  background: var(--color-error);
  color: white;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.lesson-duration {
  position: absolute;
  bottom: 0.25rem;
  right: 0.25rem;
  padding: 0.125rem 0.375rem;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.lesson-content {
  flex: 1;
  min-width: 0;
}

.lesson-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lesson-objective {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

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

.lesson-status-icon {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-success);
  color: white;
  border-radius: var(--radius-full);
}

/* ===== Lesson Page ===== */
.lesson-header {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.lesson-header-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-md);
}

.lesson-nav-buttons {
  display: flex;
  gap: var(--spacing-sm);
}

.lesson-header-progress {
  margin-top: var(--spacing-md);
}

.progress-indicator {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.progress-text {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

.progress-sm {
  height: 0.25rem;
}

.lesson-container {
  display: grid;
  grid-template-columns: 1fr 20rem;
  gap: var(--spacing-xl);
  align-items: start;
}

@media (max-width: 1024px) {
  .lesson-container {
    grid-template-columns: 1fr;
  }

  .lesson-sidebar {
    order: 2;
  }
}

.lesson-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.video-container {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.video-player {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.video-player iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.video-gap-state {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  text-align: center;
  background: rgba(239, 68, 68, 0.05);
}

.gap-state-icon {
  color: var(--color-error);
}

.gap-state-actions {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.lesson-info-panel {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-lg);
}

.lesson-title-section {
  flex: 1;
}

.lesson-main-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.lesson-meta-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.lesson-divider {
  color: var(--text-tertiary);
}

.lesson-completion-toggle {
  flex-shrink: 0;
}

.checkbox-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.checkbox-toggle input[type="checkbox"] {
  position: relative;
  width: 3rem;
  height: 1.75rem;
  appearance: none;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.checkbox-toggle input[type="checkbox"]:checked {
  background: var(--color-success);
}

.checkbox-toggle input[type="checkbox"]::before {
  content: '';
  position: absolute;
  top: 0.125rem;
  left: 0.125rem;
  width: 1.5rem;
  height: 1.5rem;
  background: white;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast);
}

.checkbox-toggle input[type="checkbox"]:checked::before {
  transform: translateX(1.25rem);
}

.checkbox-toggle-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.learning-objective-card,
.key-takeaways-card,
.notes-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
}

.key-takeaways-card .card-header {
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.key-takeaways-card .card-header:hover {
  background: var(--bg-hover);
}

.collapse-icon {
  transition: transform var(--transition-base);
}

.key-takeaways-card.collapsed .collapse-icon {
  transform: rotate(-90deg);
}

.collapsible-content {
  transition: all var(--transition-base);
}

.takeaways-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.takeaways-list li {
  position: relative;
  padding-left: var(--spacing-lg);
  color: var(--text-secondary);
}

.takeaways-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

.notes-textarea {
  width: 100%;
  min-height: 9.375rem;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  font-family: var(--font-family-base);
  resize: vertical;
  transition: all var(--transition-fast);
}

.notes-textarea:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: var(--shadow-focus);
}

.notes-status {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  margin-left: auto;
}

.notes-actions {
  margin-top: var(--spacing-sm);
  display: flex;
  justify-content: flex-end;
}

/* Lesson Sidebar */
.lesson-sidebar-sticky {
  position: sticky;
  top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.current-lesson-card,
.module-lessons-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
}

.current-lesson-info {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.current-lesson-number {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-brand-primary);
  color: white;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.current-lesson-details h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.current-lesson-details p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

.sidebar-lessons-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  max-height: 25rem;
  overflow-y: auto;
}

.sidebar-lesson-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.sidebar-lesson-item:hover {
  background: var(--bg-hover);
  border-color: var(--border-secondary);
}

.sidebar-lesson-item.active {
  background: var(--bg-tertiary);
  border-color: var(--color-brand-primary);
}

.sidebar-lesson-number {
  flex-shrink: 0;
  width: 1.5rem;
  height: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.sidebar-lesson-content {
  flex: 1;
  min-width: 0;
}

.sidebar-lesson-title {
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar-lesson-status {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.sidebar-lesson-icon {
  flex-shrink: 0;
  color: var(--color-success);
  display: none;
}

.sidebar-lesson-item.completed .sidebar-lesson-icon {
  display: block;
}

/* ===== Progress Dashboard ===== */
.progress-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.625rem, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.stat-card {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
}

.stat-card-icon {
  flex-shrink: 0;
  width: 4rem;
  height: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
}

.stat-card-icon-primary {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-brand-primary);
}

.stat-card-icon-success {
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
}

.stat-card-icon-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-warning);
}

.stat-card-icon-secondary {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-brand-secondary);
}

.stat-card-content {
  flex: 1;
}

.stat-card-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.stat-card-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.stat-card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
}

.stat-card-trend {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.stat-card-trend-up {
  color: var(--color-success);
}

.stat-card-trend-down {
  color: var(--color-error);
}

.progress-section {
  margin-bottom: var(--spacing-3xl);
}

/* Completion Gauge */
.completion-gauge-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3xl);
  padding: var(--spacing-2xl);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
}

@media (max-width: 768px) {
  .completion-gauge-container {
    flex-direction: column;
    gap: var(--spacing-xl);
  }
}

.completion-gauge {
  position: relative;
  width: 12.5rem;
  height: 12.5rem;
}

.gauge-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.gauge-bg {
  fill: none;
  stroke: var(--bg-tertiary);
  stroke-width: 12;
}

.gauge-fill {
  fill: none;
  stroke: var(--color-brand-primary);
  stroke-width: 12;
  stroke-linecap: round;
  stroke-dasharray: 534.07;
  stroke-dashoffset: 534.07;
  transition: stroke-dashoffset var(--transition-slow);
}

.gauge-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.gauge-percentage {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--text-primary);
}

.gauge-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

.completion-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.breakdown-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.breakdown-color {
  width: 1rem;
  height: 1rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.breakdown-label {
  flex: 1;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

.breakdown-value {
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* Streak Calendar */
.streak-calendar {
  padding: var(--spacing-xl);
}

.calendar-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.calendar-weekday {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  font-weight: var(--font-weight-semibold);
}

.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.calendar-day {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.calendar-day:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-md);
}

.calendar-day[data-level="1"] {
  background: rgba(59, 130, 246, 0.2);
}

.calendar-day[data-level="2"] {
  background: rgba(59, 130, 246, 0.4);
}

.calendar-day[data-level="3"] {
  background: rgba(59, 130, 246, 0.6);
}

.calendar-day[data-level="4"] {
  background: rgba(59, 130, 246, 0.8);
}

.calendar-legend {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-xs);
}

.legend-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
}

.legend-item {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: var(--radius-sm);
}

.legend-level-0 {
  background: var(--bg-secondary);
}

.legend-level-1 {
  background: rgba(59, 130, 246, 0.2);
}

.legend-level-2 {
  background: rgba(59, 130, 246, 0.4);
}

.legend-level-3 {
  background: rgba(59, 130, 246, 0.6);
}

.legend-level-4 {
  background: rgba(59, 130, 246, 0.8);
}

.calendar-month {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

/* Course Progress List */
.course-progress-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.course-progress-item {
  padding: var(--spacing-xl);
}

.course-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.course-progress-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin: 0 0 var(--spacing-xs) 0;
}

.course-progress-meta {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin: 0;
}

.course-progress-percentage {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
}

.course-progress-bar-container {
  margin-bottom: var(--spacing-md);
}

.course-progress-stats {
  display: flex;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.progress-stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.progress-stat .stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

.progress-stat .stat-value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.course-progress-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

/* Achievements */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12.5rem, 1fr));
  gap: var(--spacing-lg);
}

.achievement-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  background: var(--bg-elevated);
  border: 0.125rem solid var(--border-primary);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.achievement-badge:not(.achievement-locked) {
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 0.1875rem rgba(59, 130, 246, 0.1);
}

.achievement-locked {
  opacity: 0.5;
}

.achievement-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
}

.achievement-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

.achievement-desc {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .wizard-steps-indicator {
    flex-direction: column;
  }

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

  .lesson-info-panel {
    flex-direction: column;
  }

  .stat-card {
    flex-direction: column;
    text-align: center;
  }

  .achievements-grid {
    grid-template-columns: repeat(auto-fill, minmax(9.375rem, 1fr));
  }
}