:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #1a1a25;
  --fg: #e8e8ed;
  --fg-muted: #8a8a9a;
  --accent: #f59e0b;
  --accent-dim: rgba(245, 158, 11, 0.15);
  --green: #22c55e;
  --border: rgba(255, 255, 255, 0.06);
  --radius: 12px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', -apple-system, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  line-height: 1.1;
}

/* Hero */
.hero {
  min-height: 90vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 80px 60px;
  gap: 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.signal-badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.hero h1 .accent {
  color: var(--accent);
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* Signal Card Visual */
.hero-visual {
  display: flex;
  justify-content: center;
}

.signal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 280px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.signal-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.signal-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.signal-dot.green {
  background: var(--green);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.4);
}

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

.signal-metric {
  margin-bottom: 24px;
}

.metric-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  line-height: 1;
}

.metric-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.signal-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 60px;
}

.signal-bars .bar {
  flex: 1;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  transition: background 0.3s;
}

.signal-bars .bar.highlight {
  background: var(--accent);
}

/* Problem Section */
.problem {
  padding: 120px 60px;
  background: var(--bg-elevated);
}

.problem-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.problem h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: 48px;
  letter-spacing: -0.02em;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  text-align: center;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}

.stat-desc {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

.problem-statement {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 700px;
  line-height: 1.7;
}

/* Features */
.features {
  padding: 120px 60px;
  max-width: 900px;
  margin: 0 auto;
}

.features h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: 56px;
  letter-spacing: -0.02em;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.feature-item {
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--accent-dim);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.feature-content h3 {
  font-size: 1.15rem;
  margin-bottom: 6px;
  font-weight: 600;
}

.feature-content p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Closing */
.closing {
  padding: 120px 60px;
  background: var(--bg-elevated);
  text-align: center;
}

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

.closing h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 24px;
  letter-spacing: -0.01em;
}

.closing p {
  color: var(--fg-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.closing-vision {
  color: var(--accent) !important;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem !important;
  font-weight: 600;
  margin-top: 32px !important;
}

/* Footer */
.site-footer {
  padding: 40px 60px;
  border-top: 1px solid var(--border);
}

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

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 1rem;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

/* Mobile */
@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    padding: 60px 24px;
    min-height: auto;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
  }

  .problem {
    padding: 80px 24px;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .features {
    padding: 80px 24px;
  }

  .feature-item {
    flex-direction: column;
    gap: 12px;
  }

  .closing {
    padding: 80px 24px;
  }

  .site-footer {
    padding: 30px 24px;
  }

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}