/* 
 * AccentArcade - Liquid Glass Design System
 * A modern glassmorphism-based design for language learning
 */

/* ========== CSS Variables ========== */
:root {
  /* Colors */
  --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --success-gradient: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  --warning-gradient: linear-gradient(135deg, #f7971e 0%, #ffd200 100%);
  
  --bg-dark: #0a0a1a;
  --bg-darker: #050510;
  --glass-bg: rgba(255, 255, 255, 0.08);
  --glass-bg-light: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.15);
  --glass-shadow: rgba(0, 0, 0, 0.3);
  
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius - Aether Philosophy */
  --radius-full: 9999px;
  --radius-2xl: 1.5rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========== Animated Background ========== */
.bg-animated {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: var(--bg-darker);
  overflow: hidden;
}

.bg-animated::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(102, 126, 234, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(118, 75, 162, 0.3) 0%, transparent 50%),
    radial-gradient(ellipse at 40% 60%, rgba(79, 172, 254, 0.2) 0%, transparent 40%),
    radial-gradient(ellipse at 60% 30%, rgba(240, 147, 251, 0.2) 0%, transparent 40%);
  animation: bgFloat 20s ease-in-out infinite;
}

.bg-animated::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
  pointer-events: none;
}

@keyframes bgFloat {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  25% { transform: translate(2%, 2%) rotate(1deg); }
  50% { transform: translate(-1%, 3%) rotate(-1deg); }
  75% { transform: translate(-2%, 1%) rotate(0.5deg); }
}

/* ========== Glass Components ========== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
}

.glass-light {
  background: var(--glass-bg-light);
  backdrop-filter: blur(25px) saturate(200%);
  -webkit-backdrop-filter: blur(25px) saturate(200%);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-2xl);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  box-shadow: 
    0 8px 32px var(--glass-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
  transition: all 0.4s var(--transition-smooth);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: 
    0 16px 48px var(--glass-shadow),
    inset 0 1px 0 rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.25);
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 6vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-gradient-accent {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-md) var(--space-xl);
  transition: all 0.3s var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(10, 10, 26, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary-gradient);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-2xl);
  transition: all 0.3s var(--transition-smooth);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.nav-cta {
  display: flex;
  gap: var(--space-md);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--space-sm);
}

@media (max-width: 968px) {
  .nav-links, .nav-cta {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(20px);
    padding: var(--space-lg);
    gap: var(--space-md);
  }
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-2xl);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all 0.3s var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s var(--transition-smooth);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(102, 126, 234, 0.5);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

.btn-secondary:hover {
  background: var(--glass-bg-light);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-accent {
  background: var(--accent-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(79, 172, 254, 0.4);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(79, 172, 254, 0.5);
}

.btn-success {
  background: var(--success-gradient);
  color: white;
  box-shadow: 0 4px 20px rgba(17, 153, 142, 0.4);
}

.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1.1rem;
}

.btn-sm {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.9rem;
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ========== Layout ========== */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ========== Hero Section ========== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 100px;
  position: relative;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-text h1 {
  margin-bottom: var(--space-lg);
}

.hero-text p {
  font-size: 1.25rem;
  margin-bottom: var(--space-xl);
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.hero-visual {
  position: relative;
}

.hero-mockup {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
  position: relative;
}

.mockup-window {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md);
  border-bottom: 1px solid var(--glass-border);
}

.mockup-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.mockup-dot.red { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green { background: #28c840; }

.mockup-content {
  padding: var(--space-xl);
}

.chat-message {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.6s var(--transition-smooth);
}

.chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.chat-avatar.user {
  background: var(--accent-gradient);
}

.chat-bubble {
  background: var(--glass-bg-light);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-2xl);
  max-width: 80%;
}

.chat-bubble p {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.chat-bubble small {
  color: var(--text-muted);
  font-size: 0.8rem;
}

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

@media (max-width: 968px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-visual {
    order: -1;
  }
}

/* ========== Feature Cards ========== */
.feature-card {
  padding: var(--space-xl);
  text-align: center;
}

.feature-icon {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-2xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto var(--space-lg);
  background: var(--primary-gradient);
  box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.feature-card:nth-child(2) .feature-icon {
  background: var(--accent-gradient);
  box-shadow: 0 8px 24px rgba(79, 172, 254, 0.3);
}

.feature-card:nth-child(3) .feature-icon {
  background: var(--secondary-gradient);
  box-shadow: 0 8px 24px rgba(240, 147, 251, 0.3);
}

.feature-card:nth-child(4) .feature-icon {
  background: var(--success-gradient);
  box-shadow: 0 8px 24px rgba(56, 239, 125, 0.3);
}

.feature-card h4 {
  margin-bottom: var(--space-md);
}

/* ========== Level Cards ========== */
.level-card {
  position: relative;
  padding: 0;
  overflow: hidden;
  cursor: pointer;
}

.level-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: transform 0.5s var(--transition-smooth);
}

.level-card:hover .level-image {
  transform: scale(1.1);
}

.level-content {
  padding: var(--space-xl);
  position: relative;
}

.level-badge {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: var(--primary-gradient);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.level-difficulty {
  display: flex;
  gap: var(--space-xs);
  margin-top: var(--space-md);
}

.difficulty-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--glass-border);
}

.difficulty-dot.active {
  background: var(--accent-gradient);
}

/* ========== Stats Section ========== */
.stats {
  display: flex;
  justify-content: center;
  gap: var(--space-3xl);
  flex-wrap: wrap;
}

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

.stat-number {
  font-size: 3.5rem;
  font-weight: 800;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ========== Pricing Cards ========== */
.pricing-card {
  padding: var(--space-2xl);
  text-align: center;
  position: relative;
}

.pricing-card.featured {
  border-color: rgba(102, 126, 234, 0.5);
  transform: scale(1.05);
}

.pricing-card.featured::before {
  content: 'MOST POPULAR';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.pricing-price {
  margin: var(--space-xl) 0;
}

.pricing-price .amount {
  font-size: 3.5rem;
  font-weight: 800;
}

.pricing-price .period {
  color: var(--text-muted);
  font-size: 1rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--space-xl);
  text-align: left;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--glass-border);
  color: var(--text-secondary);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-features .check {
  color: #38ef7d;
  font-size: 1.2rem;
}

/* ========== Practice Interface ========== */
.practice-container {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-xl);
  min-height: calc(100vh - 200px);
  padding-top: 120px;
}

.practice-sidebar {
  padding: var(--space-xl);
}

.scenario-info {
  margin-bottom: var(--space-xl);
}

.scenario-info h3 {
  margin-bottom: var(--space-md);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--glass-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-md) 0;
}

.progress-fill {
  height: 100%;
  background: var(--success-gradient);
  border-radius: var(--radius-full);
  transition: width 0.5s var(--transition-smooth);
}

.phrase-list {
  list-style: none;
}

.phrase-item {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all 0.3s var(--transition-smooth);
  margin-bottom: var(--space-sm);
}

.phrase-item:hover,
.phrase-item.active {
  background: var(--glass-bg-light);
}

.phrase-item.completed {
  opacity: 0.6;
}

.phrase-number {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 600;
}

.phrase-item.completed .phrase-number {
  background: var(--success-gradient);
}

.practice-main {
  padding: var(--space-xl);
}

.chat-container {
  max-width: 700px;
  margin: 0 auto;
}

.input-area {
  margin-top: var(--space-xl);
  padding: var(--space-lg);
  background: var(--glass-bg);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
}

.input-wrapper {
  display: flex;
  gap: var(--space-md);
  align-items: flex-end;
}

.text-input {
  flex: 1;
  background: var(--glass-bg-light);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-md) var(--space-lg);
  color: var(--text-primary);
  font-size: 1rem;
  resize: none;
  min-height: 50px;
  font-family: inherit;
}

.text-input:focus {
  outline: none;
  border-color: rgba(102, 126, 234, 0.5);
}

.text-input::placeholder {
  color: var(--text-muted);
}

.audio-controls {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--glass-border);
}

@media (max-width: 968px) {
  .practice-container {
    grid-template-columns: 1fr;
  }
  
  .practice-sidebar {
    order: 2;
  }
}

/* ========== Footer ========== */
.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--glass-border);
  margin-top: var(--space-3xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  margin-top: var(--space-md);
  max-width: 300px;
}

.footer-links h4 {
  margin-bottom: var(--space-lg);
  font-size: 1rem;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
}

.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--glass-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.3s var(--transition-smooth);
}

.social-links a:hover {
  background: var(--primary-gradient);
  color: white;
}

@media (max-width: 968px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* ========== Badges & Tags ========== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-primary {
  background: var(--primary-gradient);
  color: white;
}

.badge-accent {
  background: var(--accent-gradient);
  color: white;
}

.badge-success {
  background: var(--success-gradient);
  color: white;
}

.badge-glass {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
}

/* ========== Tooltips ========== */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--glass-bg-light);
  backdrop-filter: blur(10px);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-2xl);
  font-size: 0.85rem;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s var(--transition-smooth);
}

.tooltip:hover::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-4px);
}

/* ========== Animations ========== */
.fade-in {
  animation: fadeIn 0.6s var(--transition-smooth);
}

.slide-up {
  animation: slideUp 0.6s var(--transition-smooth);
}

.scale-in {
  animation: scaleIn 0.5s var(--transition-bounce);
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Staggered animations */
.stagger > * {
  animation: slideUp 0.6s var(--transition-smooth) backwards;
}

.stagger > *:nth-child(1) { animation-delay: 0.1s; }
.stagger > *:nth-child(2) { animation-delay: 0.2s; }
.stagger > *:nth-child(3) { animation-delay: 0.3s; }
.stagger > *:nth-child(4) { animation-delay: 0.4s; }
.stagger > *:nth-child(5) { animation-delay: 0.5s; }
.stagger > *:nth-child(6) { animation-delay: 0.6s; }

/* ========== About Page ========== */
.about-hero {
  text-align: center;
  padding: 150px 0 var(--space-3xl);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.team-card {
  padding: var(--space-xl);
  text-align: center;
}

.team-avatar {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  margin: 0 auto var(--space-lg);
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}

.team-card h4 {
  margin-bottom: var(--space-xs);
}

.team-card .role {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-md);
}

/* ========== Testimonials ========== */
.testimonial-card {
  padding: var(--space-xl);
}

.testimonial-content {
  font-style: italic;
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
  color: var(--text-secondary);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.testimonial-avatar {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.testimonial-info h5 {
  font-size: 1rem;
  margin-bottom: 2px;
}

.testimonial-info span {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== CTA Section ========== */
.cta-section {
  text-align: center;
  padding: var(--space-3xl);
  background: var(--glass-bg);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
  animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.8; }
}

.cta-section h2,
.cta-section p,
.cta-section .btn {
  position: relative;
  z-index: 1;
}

.cta-section h2 {
  margin-bottom: var(--space-md);
}

.cta-section p {
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* ========== Streak & Gamification ========== */
.streak-card {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-lg);
  background: var(--glass-bg);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
}

.streak-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-full);
  background: var(--warning-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
}

.streak-info h4 {
  font-size: 1.5rem;
  margin-bottom: 4px;
}

.streak-info p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ========== Audio Player ========== */
.audio-player {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--glass-bg);
  border-radius: var(--radius-2xl);
  border: 1px solid var(--glass-border);
}

.audio-player .play-btn {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: var(--primary-gradient);
  border: none;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s var(--transition-smooth);
}

.audio-player .play-btn:hover {
  transform: scale(1.1);
}

.audio-waveform {
  flex: 1;
  height: 40px;
  display: flex;
  align-items: center;
  gap: 3px;
}

.waveform-bar {
  width: 4px;
  background: var(--glass-border);
  border-radius: var(--radius-full);
  transition: height 0.1s ease;
}

.waveform-bar.active {
  background: var(--primary-gradient);
}

.audio-time {
  color: var(--text-muted);
  font-size: 0.9rem;
  min-width: 80px;
  text-align: right;
}

/* ========== Responsive Utilities ========== */
@media (max-width: 600px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .btn-lg {
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
  }
  
  .stats {
    gap: var(--space-xl);
  }
  
  .stat-number {
    font-size: 2.5rem;
  }
}

/* ========== Print Styles ========== */
@media print {
  .navbar, .footer, .btn, .bg-animated {
    display: none !important;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .glass, .glass-card {
    background: white;
    border: 1px solid #ddd;
    box-shadow: none;
  }
}