:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #141416;
  --bg-tertiary: #1d1d20;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --accent-primary: #3b82f6;
  --accent-secondary: #60a5fa;
  --border-color: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glow-primary: rgba(59, 130, 246, 0.3);
  
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Clash Display', 'Inter', sans-serif;
  
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 48px;
  --space-2xl: 80px;
  --space-3xl: 120px;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-main);
  line-height: 1.5;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  margin: 0;
  line-height: 1.1;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 5vw, 4rem);
}

/* Navigation */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: var(--space-md) 0;
  background: rgba(10, 10, 11, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.logo-dot {
  width: 8px;
  height: 8px;
  background: var(--accent-primary);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: var(--space-xl);
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

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

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  cursor: pointer;
  transition: transform 0.2s ease, filter 0.2s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--text-primary);
  color: var(--bg-primary);
  border: none;
}

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

section {
  margin-top: var(--space-3xl);
}

main > :first-child {
  margin-top: 0;
}

/* Hero Section */
.hero {
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-glow {
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80%;
  height: 80%;
  background: radial-gradient(circle, var(--glow-primary) 0%, transparent 70%);
  filter: blur(80px);
  z-index: 1;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  padding: 6px 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-lg);
  color: var(--accent-secondary);
}

.hero-title {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: var(--space-lg);
  background: linear-gradient(to bottom, #fff, #a1a1aa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
}

.hero-cta-group {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

/* Feature Grid */
.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-label {
  color: var(--accent-primary);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
  display: block;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: var(--space-md);
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.card {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--accent-primary);
}

.card-cta {
  text-align: center;
  border-color: var(--accent-primary);
  background: linear-gradient(45deg, var(--bg-secondary), var(--bg-tertiary));
}

.footer-description {
  color: var(--text-secondary);
  margin-top: var(--space-md);
  max-width: 240px;
  font-size: 0.875rem;
}

.footer-legal-links {
  display: flex;
  gap: var(--space-lg);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: var(--glass-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  color: var(--accent-primary);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

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

/* App Showcase */
.showcase {
  margin-top: var(--space-3xl);
  position: relative;
}

.showcase-container {
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  overflow: hidden;
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 0.5);
}
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  overflow: hidden;
}

.placeholder-image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--bg-tertiary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  position: relative;
}

.placeholder-image::after {
  content: attr(data-label);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

@media (min-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

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

.stat-value {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-display);
  margin-bottom: var(--space-xs);
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Footer */
footer {
  margin-top: var(--space-3xl);
  padding-bottom: var(--space-2xl);
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
  padding-top: var(--space-2xl);
}

.footer-logo {
  grid-column: span 2;
}

@media (max-width: 768px) {
  .footer-logo {
    grid-column: span 1;
  }
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
}

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

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

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

.footer-bottom {
  margin-top: var(--space-3xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-secondary);
  font-size: 0.75rem;
}

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

.animate-fade {
  animation: fadeIn 0.8s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }