:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ec;
  --fg-muted: #8a8a9a;
  --fg-dim: #5a5a6a;
  --accent: #7c6aff;
  --accent-glow: rgba(124, 106, 255, 0.15);
  --accent-bright: #9d8fff;
  --green: #3dd68c;
  --green-glow: rgba(61, 214, 140, 0.15);
  --orange: #ff8c42;
  --radius: 12px;
  --radius-sm: 8px;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'DM Sans', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  line-height: 1.15;
}

/* ====== HERO ====== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
  text-align: center;
  overflow: hidden;
}

.hero-ambient {
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-tag {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 12px;
  color: var(--accent);
  margin-bottom: 24px;
  font-weight: 500;
}

.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  max-width: 800px;
  margin-bottom: 24px;
}

.hero-accent {
  background: linear-gradient(135deg, var(--accent-bright), var(--accent), #5b4cd4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.hero-visual {
  position: relative;
  margin-top: 64px;
  width: 120px;
  height: 120px;
}

.pulse-ring {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: pulse-expand 3s ease-out infinite;
}

.pulse-ring-2 { animation-delay: 1s; }
.pulse-ring-3 { animation-delay: 2s; }

@keyframes pulse-expand {
  0% { transform: scale(0.5); opacity: 0.6; }
  100% { transform: scale(2.5); opacity: 0; }
}

.signal-icon {
  position: absolute;
  inset: 25%;
}

.signal-icon svg {
  width: 100%;
  height: 100%;
}

/* ====== SIGNAL CARDS ====== */
.signal-section {
  padding: 40px 24px 100px;
}

.signal-grid {
  max-width: 960px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 16px;
}

.signal-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  padding: 28px 24px;
}

.signal-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--fg-dim);
  margin-bottom: 8px;
}

.signal-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--orange);
  margin-bottom: 14px;
}

.signal-bar {
  height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 2px;
  margin-bottom: 12px;
  overflow: hidden;
}

.signal-fill {
  height: 100%;
  background: var(--orange);
  border-radius: 2px;
}

.signal-fill-green {
  background: var(--green);
}

.signal-meta {
  font-size: 12px;
  color: var(--fg-dim);
}

.signal-card-nudge {
  background: var(--bg-card);
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow), inset 0 0 40px var(--accent-glow);
}

.signal-nudge {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-bright);
  margin-bottom: 12px;
  line-height: 1.3;
}

/* ====== FEATURES ====== */
.features {
  padding: 120px 24px;
}

.features-header {
  max-width: 700px;
  margin: 0 auto 72px;
  text-align: center;
}

.features-header h2 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  margin-bottom: 16px;
}

.features-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
}

.features-grid {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-block {
  padding: 40px 32px;
  background: var(--bg-elevated);
  border: 1px solid rgba(255,255,255,0.04);
  border-radius: var(--radius);
  transition: border-color 0.3s;
}

.feature-block:hover {
  border-color: rgba(124, 106, 255, 0.3);
}

.feature-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.feature-block h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.feature-block p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ====== GAME TAPE ====== */
.gametape {
  padding: 120px 24px;
  background: var(--bg-elevated);
}

.gametape-layout {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.gametape-tag {
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 11px;
  color: var(--green);
  margin-bottom: 12px;
  font-weight: 500;
}

.gametape-text h2 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  margin-bottom: 20px;
}

.gametape-text > p {
  color: var(--fg-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 40px;
}

.gametape-stats {
  display: flex;
  gap: 32px;
}

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

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

.stat-label {
  font-size: 12px;
  color: var(--fg-dim);
  margin-top: 4px;
}

.gametape-visual {
  position: relative;
  min-height: 320px;
}

.tape-line {
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--green));
  opacity: 0.4;
}

.tape-node {
  position: relative;
  padding-left: 40px;
  margin-bottom: 48px;
}

.tape-node::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  background: var(--bg-elevated);
}

.tape-node-3::before { border-color: var(--green); }
.tape-node-4::before { border-color: var(--green); }

.tape-time {
  display: block;
  font-family: 'Space Grotesk', monospace;
  font-size: 12px;
  color: var(--fg-dim);
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.tape-event {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
}

/* ====== CLOSING ====== */
.closing {
  padding: 140px 24px;
  text-align: center;
}

.closing-content {
  max-width: 740px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 20px;
  line-height: 1.25;
}

.closing-accent {
  color: var(--accent-bright);
}

.closing-sub {
  color: var(--fg-muted);
  font-size: 1.05rem;
  max-width: 520px;
  margin: 0 auto;
}

/* ====== FOOTER ====== */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid rgba(255,255,255,0.04);
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.5px;
}

.footer-note {
  font-size: 13px;
  color: var(--fg-dim);
}

/* ====== RESPONSIVE ====== */
@media (max-width: 768px) {
  .signal-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }

  .gametape-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .gametape-stats {
    flex-direction: column;
    gap: 16px;
  }

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

  .hero {
    min-height: auto;
    padding: 100px 20px 60px;
  }

  .features {
    padding: 80px 20px;
  }

  .gametape {
    padding: 80px 20px;
  }

  .closing {
    padding: 80px 20px;
  }
}