/* === 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);
}

/* === PORTAL PREVIEW === */
.portal-preview {
  position: fixed;
  z-index: 100;
  background: rgba(0, 0, 20, 0.93);
  border: 1px solid var(--color-primary);
  border-radius: 6px;
  padding: 10px;
  width: 224px;
  pointer-events: none;
  transition: opacity 0.18s ease;
  box-shadow: 0 0 20px rgba(68, 136, 255, 0.3);
}

.portal-preview.hidden {
  opacity: 0;
}

.portal-preview-screenshot {
  width: 204px;
  height: 120px;
  border-radius: 4px;
  overflow: hidden;
  margin-bottom: 8px;
  background: var(--color-secondary);
}

.portal-preview-screenshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.portal-preview-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid transparent;
  border-radius: 4px;
}

.portal-preview-name {
  font-size: 13px;
  font-weight: bold;
  color: var(--color-text);
  margin-bottom: 4px;
}

.portal-preview-desc {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 6px;
  line-height: 1.4;
}

.portal-preview-url {
  font-size: 10px;
  color: var(--color-primary);
  opacity: 0.7;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* === 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;
}