:root {
  --bg: #0a0a0a;
  --bg-elevated: #111111;
  --bg-card: #0f0f0f;
  --fg: #e8e8e8;
  --fg-dim: #666666;
  --fg-muted: #444444;
  --accent: #cc2222;
  --accent-dim: rgba(204, 34, 34, 0.15);
  --border: #1a1a1a;
  --border-hover: #2a2a2a;
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Space Grotesk', -apple-system, sans-serif;
  --noise-opacity: 0.035;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

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

/* --- Noise & Scanlines --- */
.noise-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: var(--noise-opacity);
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='1'/%3E%3C/svg%3E");
  background-repeat: repeat;
}

.scanlines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    to bottom,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.03) 2px,
    rgba(0, 0, 0, 0.03) 4px
  );
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 2rem;
  background: radial-gradient(ellipse at 50% 50%, rgba(204, 34, 34, 0.04) 0%, transparent 70%);
}

.hero-inner {
  text-align: center;
  max-width: 900px;
}

.hero-prefix {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  margin-bottom: 2rem;
  text-transform: uppercase;
}

.hero-title {
  font-family: var(--sans);
  font-size: clamp(4rem, 15vw, 12rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 0.9;
  color: var(--fg);
  position: relative;
  margin-bottom: 1.5rem;
}

.hero-title::after {
  content: attr(data-text);
  position: absolute;
  top: 3px;
  left: 3px;
  color: var(--accent);
  opacity: 0.3;
  z-index: -1;
}

.hero-tagline {
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--fg-dim);
  letter-spacing: 0.15em;
  margin-bottom: 3rem;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-muted);
  letter-spacing: 0.1em;
  flex-wrap: wrap;
}

.meta-divider {
  color: var(--accent);
  opacity: 0.5;
}

/* --- Transmission --- */
.transmission {
  padding: 8rem 2rem;
  border-top: 1px solid var(--border);
}

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

.transmission-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 4rem;
}

.transmission-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
}

.transmission-block {
  border-left: 1px solid var(--border);
  padding-left: 1.5rem;
}

.block-number {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-muted);
  margin-bottom: 1rem;
  letter-spacing: 0.1em;
}

.block-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--fg-dim);
}

/* --- Pieces --- */
.pieces {
  padding: 8rem 2rem;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.pieces-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.pieces-header {
  margin-bottom: 4rem;
}

.pieces-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 1rem;
}

.pieces-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.01em;
}

.pieces-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
}

.piece-card {
  background: var(--bg-card);
  padding: 2.5rem;
  position: relative;
  transition: background 0.3s ease;
}

.piece-card:hover {
  background: var(--bg-elevated);
}

.piece-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.piece-card:hover::before {
  opacity: 0.5;
}

.piece-id {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg-muted);
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.piece-name {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.piece-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--fg-dim);
  margin-bottom: 1.5rem;
}

.piece-tag {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  padding: 0.3rem 0.8rem;
  border: 1px solid var(--accent-dim);
  display: inline-block;
}

/* --- Signal --- */
.signal {
  padding: 6rem 2rem;
}

.signal-inner {
  max-width: 800px;
  margin: 0 auto;
}

.signal-bar {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.3;
}

.signal-content {
  padding: 3rem 0;
}

.signal-prefix {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.3em;
  color: var(--accent);
  display: block;
  margin-bottom: 1.5rem;
}

.signal-text {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--fg-dim);
  font-weight: 300;
}

/* --- Closing --- */
.closing {
  padding: 10rem 2rem;
  text-align: center;
  background: radial-gradient(ellipse at 50% 80%, rgba(204, 34, 34, 0.06) 0%, transparent 60%);
}

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

.closing-status {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.4em;
  color: var(--accent);
  margin-bottom: 2rem;
}

.closing-text {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--fg);
  margin-bottom: 1.5rem;
}

.closing-sub {
  font-size: 0.95rem;
  color: var(--fg-dim);
  line-height: 1.7;
  margin-bottom: 3rem;
}

.closing-coords {
  display: flex;
  justify-content: center;
  gap: 2rem;
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg-muted);
  letter-spacing: 0.2em;
  flex-wrap: wrap;
}

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

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

.footer-brand {
  color: var(--fg);
  font-weight: 600;
}

.footer-divider {
  color: var(--fg-muted);
}

.footer-year {
  color: var(--fg-muted);
}

.footer-right {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--accent);
  letter-spacing: 0.2em;
}

.footer-status::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  margin-right: 0.5rem;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 1; }
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .transmission-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

  .hero-meta {
    flex-direction: column;
    gap: 0.5rem;
  }

  .meta-divider {
    display: none;
  }

  .closing-coords {
    flex-direction: column;
    gap: 0.75rem;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .piece-card {
    padding: 2rem 1.5rem;
  }

  .transmission {
    padding: 5rem 1.5rem;
  }

  .pieces {
    padding: 5rem 1.5rem;
  }

  .signal {
    padding: 4rem 1.5rem;
  }

  .closing {
    padding: 6rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 3.5rem;
  }

  .closing-text {
    font-size: 1.8rem;
  }

  .piece-name {
    font-size: 1.1rem;
  }
}