/* === DESIGN SYSTEM — NEXUS === */
:root {
  --color-bg: #000008;
  --color-primary: #4488ff;
  --color-secondary: #334488;
  --color-text: #ccd6f6;
  --color-text-muted: #4a5568;
  --font-body: 'Courier New', monospace;
}

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  overflow: hidden;
  width: 100vw;
  height: 100vh;
}

canvas {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
}

/* === HUD === */
.hud-controls {
  z-index: 10;
}

/* === AUDIO TOGGLE === */
#audio-toggle {
  font-size: 14px;
  background-color: var(--color-primary);
  color: var(--color-bg);
  padding: 4px 8px;
  border: none;
  border-radius: 4px;
  font-family: var(--font-body);
  transition: background-color 0.3s ease;
  cursor: pointer;
}

#audio-toggle:hover {
  background-color: var(--color-secondary);
}

#audio-toggle.muted {
  background-color: var(--color-text-muted);
}