/* Yoga Learning Platform - Custom Styles */

:root {
  /* Yoga-themed colors */
  --yoga-teal: #0d9488;
  --yoga-gold: #fbbf24;
  --yoga-slate: #94a3b8;
  --yoga-deep: #1e3a8a;
  --yoga-energy: #ef4444;
  
  /* Palette from IDEA.ME branding */
  --logo-golden-yellow: #FBBF24;
  --logo-vibrant-light-blue: #0EA5E9;
  --logo-reddish-orange: #EF4444;
  --logo-deep-purple-blue: #1E3A8A;
  
  /* UI colors */
  --bg-color: #0f172a;
  --card-bg-color: #1e293b;
  --text-color: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.1);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Animation */
  --transition-speed: 0.3s;
  --bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  margin: 0;
  padding: 0;
}

/* Particles Background */
#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.2;
}

.learning-header {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background: linear-gradient(180deg, rgba(13, 148, 136, 0.2) 0%, transparent 100%);
}

.journey-title h2 {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
  background: linear-gradient(135deg, var(--yoga-teal), var(--yoga-gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.journey-title p {
  font-size: 1.2rem;
  color: var(--text-muted);
}

/* Main Container */
.learn-yoga-container {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
}

/* Navigation Sidebar */
.chapter-nav {
  position: sticky;
  top: 2rem;
  width: 300px;
  height: fit-content;
  background: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-md);
  flex-shrink: 0;
}

.nav-header h2 {
  margin: 0 0 var(--spacing-md) 0;
  font-size: 1.5rem;
  color: var(--yoga-gold);
}

.chapter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.chapter-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-xs);
  border-radius: 12px;
  cursor: pointer;
  transition: all var(--transition-speed);
  border: 1px solid transparent;
}

.chapter-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--yoga-teal);
}

.chapter-item.active {
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.2), rgba(251, 191, 36, 0.1));
  border-color: var(--yoga-teal);
}

.chapter-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
}

.chapter-title {
  flex: 1;
  font-weight: 500;
}

/* Content Area */
.content-area {
  flex: 1;
  min-width: 0;
}

.chapter {
  display: none;
  animation: fadeIn 0.5s ease forwards;
}

.chapter.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.content-card {
  background: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-speed);
}

.content-card h2 {
  color: var(--yoga-teal);
  margin-top: 0;
}

.insight-box {
  background: rgba(13, 148, 136, 0.1);
  border-left: 4px solid var(--yoga-teal);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  border-radius: 0 8px 8px 0;
  display: flex;
  gap: var(--spacing-md);
}

.insight-icon {
  font-size: 1.5rem;
  color: var(--yoga-teal);
}

.insight-content h4 {
  margin: 0 0 0.5rem 0;
}

/* Pose Grid */
.pose-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.pose-preview-card {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: var(--spacing-md);
  text-align: center;
  cursor: pointer;
  transition: transform 0.2s;
}

.pose-preview-card:hover {
  transform: scale(1.05);
  background: rgba(255, 255, 255, 0.1);
}

.pose-mini-svg {
  width: 100px;
  height: 100px;
  margin-bottom: var(--spacing-sm);
}

/* Flip Cards */
.flip-card-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

/* Quiz Specific */
.quiz-section {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 16px;
  padding: var(--spacing-lg);
}

/* Vinyasa Transition Component */
.vinyasa-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
  background: rgba(0, 0, 0, 0.2);
  border-radius: 12px;
  padding: var(--spacing-md);
}

.vinyasa-viewer {
  width: 100%;
  height: 300px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.vinyasa-viewer svg {
  width: 100%;
  height: 100%;
}

.joint-group {
  transition: transform 1.5s cubic-bezier(0.4, 0, 0.2, 1);
  transform-box: view-box;
}

#torso-path {
  transition: all 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.vinyasa-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.vinyasa-steps {
  display: flex;
  gap: var(--spacing-md);
  flex: 1;
}

.vinyasa-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0.5;
  transition: opacity 0.3s;
  cursor: pointer;
}

.vinyasa-step.active {
  opacity: 1;
}

.step-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s, transform 0.3s;
}

.vinyasa-step.active .step-dot {
  background: var(--yoga-teal);
  transform: scale(1.3);
  box-shadow: 0 0 10px var(--yoga-teal);
}

.step-name {
  font-size: 0.8rem;
  font-weight: 500;
}

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

.btn-play {
  background: var(--yoga-teal);
  color: white;
  border: none;
  border-radius: 20px;
  padding: 0.5rem 1.2rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
}

.btn-play:hover {
  background: #0f766e;
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1024px) {
  .learn-yoga-container {
    flex-direction: column;
  }
  
  .chapter-nav {
    width: 100%;
    position: relative;
    top: 0;
  }
}