*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, sans-serif;
  background: #0a0a0a;
  color: #fafafa;
  overflow: hidden;
}

canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}

#ui {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  z-index: 10;
}

#info {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#controls {
  display: flex;
  gap: 0.5rem;
}

.btn {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.5);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border-radius: 2rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.btn:hover {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.3);
}

.btn.active {
  background: rgba(120, 80, 255, 0.3);
  border-color: rgba(120, 80, 255, 0.6);
  color: rgba(200, 170, 255, 1);
}