:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --fg-primary: #e8e8ed;
  --fg-secondary: #8888a0;
  --fg-muted: #55556a;
  --accent: #00e5a0;
  --accent-dim: rgba(0, 229, 160, 0.12);
  --accent-glow: rgba(0, 229, 160, 0.3);
  --border: #1e1e2e;
  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-display);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem 2rem 4rem;
  overflow: hidden;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 720px;
  text-align: left;
}

.status-bar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 229, 160, 0.2);
  border-radius: 100px;
  margin-bottom: 2.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  color: var(--accent);
  text-transform: uppercase;
}

.pulse {
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--accent-glow); }
  50% { opacity: 0.6; box-shadow: 0 0 0 8px transparent; }
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
}

.highlight {
  color: var(--accent);
}

.lede {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  max-width: 560px;
  line-height: 1.7;
}

.hero-grid {
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.06;
}

.grid-line {
  position: absolute;
  background: var(--accent);
}

.grid-line:nth-child(1) { left: 20%; top: 0; bottom: 0; width: 1px; }
.grid-line:nth-child(2) { left: 50%; top: 0; bottom: 0; width: 1px; }
.grid-line:nth-child(3) { left: 80%; top: 0; bottom: 0; width: 1px; }
.grid-line:nth-child(4) { top: 60%; left: 0; right: 0; height: 1px; }

/* ============ SIGNAL ============ */
.signal {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
}

.signal-inner {
  max-width: 960px;
  margin: 0 auto;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.signal h2, .how h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 3rem;
  letter-spacing: -0.02em;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.signal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  transition: border-color 0.3s ease;
}

.signal-card:hover {
  border-color: rgba(0, 229, 160, 0.3);
}

.signal-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.signal-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.signal-card p {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* ============ HOW ============ */
.how {
  padding: 6rem 2rem;
}

.how-inner {
  max-width: 720px;
  margin: 0 auto;
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.timeline-item {
  display: flex;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-marker {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  font-weight: 500;
  flex-shrink: 0;
  padding-top: 0.15rem;
}

.timeline-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--fg-secondary);
  line-height: 1.6;
}

/* ============ CLOSING ============ */
.closing {
  padding: 8rem 2rem;
  background: var(--bg-secondary);
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.closing-sub {
  font-size: 1.1rem;
  color: var(--fg-secondary);
  line-height: 1.7;
}

/* ============ FOOTER ============ */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  color: var(--fg-muted);
  font-weight: 500;
}

.footer-text {
  font-size: 0.8rem;
  color: var(--fg-muted);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .hero {
    min-height: 80vh;
    padding: 4rem 1.5rem 3rem;
  }

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

  .timeline-item {
    flex-direction: column;
    gap: 0.5rem;
  }

  .closing {
    padding: 5rem 1.5rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2rem;
  }

  .signal-card {
    padding: 1.5rem;
  }
}

/* ============ CTA BUTTON (landing → dashboard) ============ */
.hero-cta {
  margin-top: 2.5rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #0a0a0f;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.1s;
  letter-spacing: -0.01em;
}

.cta-btn:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}