/* === 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);
}

/* === DEBUG MODE === */
#debug-toggle {
  margin-left: 8px;
}

.collision-box {
  outline: 2px solid red;
  outline-offset: 2px;
}

.light-source {
  outline: 2px dashed yellow;
  outline-offset: 2px;
}

/* === OVERVIEW MODE === */
#overview-indicator {
  display: none;
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  pointer-events: none;
  z-index: 20;
  border: 1px solid var(--color-primary);
  padding: 4px 10px;
  background: rgba(0, 0, 8, 0.6);
  white-space: nowrap;
  animation: overview-pulse 2s ease-in-out infinite;
}

#overview-indicator.visible {
  display: block;
}

.overview-hint {
  margin-left: 12px;
  color: var(--color-text-muted);
  font-size: 10px;
}

@keyframes overview-pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

/* === CRYSTAL TOOLTIP === */
.crystal-tooltip {
  display: none;
  position: fixed;
  background: rgba(0, 0, 20, 0.92);
  border: 1px solid var(--color-primary);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 12px;
  padding: 8px 12px;
  border-radius: 4px;
  pointer-events: none;
  z-index: 30;
  max-width: 220px;
  line-height: 1.5;
}

.crystal-tooltip.visible {
  display: block;
}

.crystal-tooltip-name {
  color: var(--color-primary);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 4px;
}