/* EmpathyLens XR - Global Styles */

/* CSS Variables - Color Palette */
:root {
  /* Primary Colors */
  --bg-primary: #0a0f1e;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.6);
  
  /* Accent Colors */
  --accent-cyan: #22d3ee;
  --accent-purple: #a78bfa;
  --accent-pink: #f472b6;
  --accent-blue: #60a5fa;
  
  /* Text Colors */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  /* Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  
  /* Glow Effects */
  --glow-cyan: 0 0 20px rgba(34, 211, 238, 0.3);
  --glow-purple: 0 0 20px rgba(167, 139, 250, 0.3);
  --glow-pink: 0 0 20px rgba(244, 114, 182, 0.3);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background Pattern */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(ellipse at 20% 20%, rgba(34, 211, 238, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(167, 139, 250, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(244, 114, 182, 0.05) 0%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

/* 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, 4rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* Glass Card Style */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--glass-shadow);
  transition: transform var(--transition-normal), 
              box-shadow var(--transition-normal),
              border-color var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow), var(--glow-cyan);
  border-color: rgba(34, 211, 238, 0.3);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: var(--bg-primary);
}

.btn-primary:hover {
  box-shadow: var(--glow-cyan);
  transform: translateY(-2px);
}

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

.btn-glass:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent-cyan);
}

/* Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: var(--spacing-md) 0;
  background: rgba(10, 15, 30, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 1.25rem;
  font-weight: 700;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md);
  padding-top: calc(var(--spacing-2xl) + 80px);
}

.hero-content {
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  color: var(--accent-cyan);
  margin-bottom: var(--spacing-lg);
  animation: fadeInUp 0.6s ease-out;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-cyan) 50%, var(--accent-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2.5vw, 1.375rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

/* Condition Cards Section */
.conditions-section {
  padding: var(--spacing-2xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title h2 {
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  max-width: 600px;
  margin: 0 auto;
}

.conditions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.condition-card {
  padding: var(--spacing-lg);
  cursor: pointer;
  text-align: center;
}

.condition-card:hover .condition-icon {
  transform: scale(1.1);
}

.condition-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  transition: transform var(--transition-normal);
  display: inline-block;
}

.condition-card h3 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.condition-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

/* Condition-specific hover effects */
.condition-card.dementia:hover {
  box-shadow: var(--glow-cyan);
  border-color: rgba(34, 211, 238, 0.3);
}

.condition-card.parkinsons:hover {
  box-shadow: var(--glow-pink);
  border-color: rgba(244, 114, 182, 0.3);
}

.condition-card.anxiety:hover {
  box-shadow: var(--glow-purple);
  border-color: rgba(167, 139, 250, 0.3);
}

/* How It Works Section */
.how-it-works {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
  position: relative;
}

.how-it-works::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
}

.steps-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  position: relative;
}

.steps-container::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-pink));
  opacity: 0.3;
  z-index: 0;
}

.step {
  text-align: center;
  padding: var(--spacing-lg);
  position: relative;
  z-index: 1;
}

.step-number {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--bg-primary);
}

.step h3 {
  margin-bottom: var(--spacing-xs);
}

.step p {
  font-size: 0.9375rem;
}

/* Footer */
.footer {
  padding: var(--spacing-lg) 0;
  text-align: center;
  border-top: 1px solid var(--glass-border);
}

.footer p {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Experience Page Styles */
.experience-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.experience-header {
  padding: var(--spacing-lg) 0;
  text-align: center;
  background: var(--bg-secondary);
}

.experience-header h1 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: var(--spacing-xs);
}

.condition-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  font-size: 1rem;
  color: var(--accent-cyan);
}

.experience-content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl) var(--spacing-md);
}

.xr-placeholder {
  text-align: center;
  max-width: 600px;
}

.xr-placeholder-icon {
  font-size: 5rem;
  margin-bottom: var(--spacing-lg);
  animation: pulse 2s ease-in-out infinite;
}

.xr-placeholder h2 {
  margin-bottom: var(--spacing-sm);
}

.xr-placeholder p {
  margin-bottom: var(--spacing-lg);
}

.xr-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.info-card {
  padding: var(--spacing-md);
  text-align: center;
}

.info-card h4 {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.info-card p {
  font-size: 1.125rem;
  color: var(--text-primary);
  font-weight: 600;
}

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

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.8;
  }
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-xl) var(--spacing-md);
    padding-top: calc(var(--spacing-xl) + 60px);
  }
  
  .conditions-grid {
    grid-template-columns: 1fr;
    padding: 0 var(--spacing-sm);
  }
  
  .steps-container::before {
    display: none;
  }
  
  .step {
    padding: var(--spacing-md);
  }
  
  .step-number {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  .xr-info {
    grid-template-columns: 1fr;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .condition-icon {
    font-size: 2.5rem;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9375rem;
  }
}