:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --text-primary: #f5f5f7;
  --text-secondary: #86868b;
  --accent: #6366f1;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --success: #22c55e;
  --warning: #f59e0b;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'DM Sans', -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
}

/* Navigation */
.nav {
  padding: 1.5rem 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-status {
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent);
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
}

/* Hero */
.hero {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-glow);
  border: 1px solid rgba(99, 102, 241, 0.3);
  color: var(--accent);
  padding: 0.35rem 0.75rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 1.5rem;
}

.hero-headline {
  font-size: 3.5rem;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 0%, #86868b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lede {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  gap: 3rem;
}

.hero-stat {
  display: flex;
  flex-direction: column;
}

.hero-stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

/* Hero Card */
.hero-visual {
  perspective: 1000px;
}

.hero-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 1.5rem;
  transform: rotateY(-5deg) rotateX(5deg);
  box-shadow: 0 40px 80px rgba(0,0,0,0.4);
}

.card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-secondary);
}

.card-dot.active {
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
}

.card-content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.task-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.task-item.completed {
  color: var(--success);
}

.task-item.active {
  color: var(--text-primary);
}

.task-icon {
  width: 20px;
  text-align: center;
}

.task-icon.pulse {
  color: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.card-footer {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.ai-badge {
  background: linear-gradient(135deg, var(--accent), #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-size: 0.75rem;
  font-weight: 600;
}

/* Features */
.features {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.features-header {
  max-width: 1200px;
  margin: 0 auto 4rem;
  text-align: center;
}

.features-title {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.features-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.features-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 2rem;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  margin-bottom: 1.25rem;
}

.feature-title {
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.feature-desc {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Differentiation */
.differentiation {
  padding: 6rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.diff-label {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.diff-title {
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.diff-text {
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 2rem;
}

.diff-comparison {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.comparison-side {
  flex: 1;
}

.comparison-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.comparison-side.old p {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

.comparison-side.new p {
  color: var(--success);
  font-size: 0.85rem;
  font-weight: 500;
}

.comparison-arrow {
  font-size: 1.5rem;
  color: var(--accent);
}

/* Flow Diagram */
.flow-diagram {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.06);
}

.flow-node {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 1.25rem;
  background: var(--bg-secondary);
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.flow-node.ai {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.flow-node.ai .flow-icon {
  font-size: 1.25rem;
}

.flow-node.done {
  border-color: var(--success);
  color: var(--success);
}

.flow-arrow {
  color: var(--text-secondary);
  font-size: 1.25rem;
}

/* Closing */
.closing {
  padding: 8rem 2rem;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  text-align: center;
}

.closing-content {
  max-width: 700px;
  margin: 0 auto;
}

.closing-headline {
  font-size: 3rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.closing-sub {
  color: var(--text-secondary);
  font-size: 1.2rem;
  line-height: 1.7;
  margin-bottom: 3rem;
}

.closing-vision {
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
}

.vision-label {
  display: block;
  color: var(--accent);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.closing-vision p {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.7;
  font-style: italic;
}

/* Footer */
.footer {
  padding: 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.footer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1rem;
}

.footer-tagline {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

.footer-meta {
  color: var(--text-secondary);
  font-size: 0.75rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .hero-visual {
    order: -1;
  }
  
  .hero-card {
    transform: none;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .differentiation {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 4rem 1.5rem;
  }
  
  .hero-headline {
    font-size: 2.5rem;
  }
  
  .hero-stats {
    flex-wrap: wrap;
    gap: 2rem;
  }
  
  .features {
    padding: 4rem 1.5rem;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .closing {
    padding: 4rem 1.5rem;
  }
  
  .closing-headline {
    font-size: 2rem;
  }
}