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

:root {
  --bg: #0a0a0f;
  --surface: rgba(15, 15, 25, 0.85);
  --accent: #6ee7b7;
  --accent-dim: rgba(110, 231, 183, 0.15);
  --accent-glow: rgba(110, 231, 183, 0.4);
  --text: #e2e8f0;
  --text-dim: #64748b;
  --purple: #a78bfa;
  --purple-dim: rgba(167, 139, 250, 0.15);
}

body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  min-height: 100vh;
}

#neural-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.overlay {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  padding: 2rem 3rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo-text {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--text);
}

/* Hero */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.hero {
  text-align: center;
  max-width: 700px;
  margin-bottom: 4rem;
}

.clock-container {
  margin-bottom: 2rem;
  display: flex;
  justify-content: center;
}

#clock-canvas {
  filter: drop-shadow(0 0 20px var(--accent-glow));
}

.title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.title-line {
  display: block;
}

.title-line.accent {
  color: var(--accent);
  font-weight: 500;
  text-shadow: 0 0 40px var(--accent-glow);
}

.subtitle {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.subtle {
  color: var(--purple);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Clock container — also hosts memory fragments */
.clock-container {
  position: relative;
  overflow: visible;
}

.memory-fragment {
  position: absolute;
  left: 50%;
  top: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  opacity: 0;
  white-space: nowrap;
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--accent-dim);
  border-radius: 4px;
  background: rgba(110, 231, 183, 0.05);
  pointer-events: none;
  z-index: 2;
  animation: fragment-emerge 4s ease-out forwards;
  --drift-x: 0px;
  --drift-y: 0px;
}

@keyframes fragment-emerge {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.3);
  }
  10% {
    opacity: 0.9;
    transform: translate(-50%, -50%) scale(1);
  }
  30% {
    opacity: 0.7;
    transform: translate(calc(-50% + var(--drift-x) * 0.4), calc(-50% + var(--drift-y) * 0.4)) scale(1);
  }
  100% {
    opacity: 0;
    transform: translate(calc(-50% + var(--drift-x)), calc(-50% + var(--drift-y))) scale(0.8);
  }
}

/* CTA */
.badge {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid var(--accent-dim);
  padding: 0.5rem 1.5rem;
  border-radius: 100px;
  background: var(--accent-dim);
  box-shadow: 0 0 30px rgba(110, 231, 183, 0.1);
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  max-width: 900px;
  width: 100%;
  padding: 0 2rem;
}

.feature {
  text-align: center;
  padding: 1.5rem;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.04);
  backdrop-filter: blur(10px);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.feature:hover {
  border-color: var(--accent-dim);
  box-shadow: 0 0 30px rgba(110, 231, 183, 0.05);
}

.feature-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  filter: drop-shadow(0 0 6px var(--accent-glow));
}

.feature h3 {
  font-size: 0.95rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.feature p {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--text-dim);
  line-height: 1.5;
}

/* Footer */
footer {
  padding: 2rem;
  text-align: center;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

/* Responsive */
@media (max-width: 900px) {
  .features {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  header {
    padding: 1.5rem;
  }

  .features {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .memory-fragment {
    font-size: 0.6rem;
    padding: 0.2rem 0.4rem;
  }
}