html,
body,
#app {
  margin: 0;
  height: 100%;
  background: #16171d;
  overflow: hidden;
}

#app canvas {
  display: block;
}

#hud {
  position: fixed;
  top: 12px;
  left: 14px;
  font: 13px ui-monospace, Consolas, monospace;
  color: #c084fc;
  background: rgba(22, 23, 29, 0.6);
  padding: 6px 10px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

#hud button,
#hud select,
#hud a {
  font: inherit;
  color: #c084fc;
  background: rgba(192, 132, 252, 0.12);
  border: 1px solid rgba(192, 132, 252, 0.35);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
  text-decoration: none;
}

#hud a:hover {
  background: rgba(192, 132, 252, 0.2);
}

#hud select option {
  color: #16171d;
  background: #f4f3ec;
}

#hud button:hover:not(:disabled) {
  background: rgba(192, 132, 252, 0.2);
}

#hud button:disabled {
  opacity: 0.35;
  cursor: default;
}

#info {
  position: fixed;
  top: 56px;
  left: 14px;
  max-width: 440px;
  font: 14px/1.55 system-ui, -apple-system, sans-serif;
  color: #d1d0d8;
  background: rgba(22, 23, 29, 0.94);
  border: 1px solid rgba(192, 132, 252, 0.3);
  padding: 16px 20px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

#info[hidden] {
  display: none;
}

#info p {
  margin: 0 0 10px;
}

#info p:last-child {
  margin-bottom: 0;
}

#info code {
  font: 12.5px ui-monospace, Consolas, monospace;
  background: rgba(192, 132, 252, 0.14);
  color: #e8d4ff;
  padding: 1px 5px;
  border-radius: 3px;
}

#info .truth {
  color: #9b95a3;
}

#info .pred {
  color: #c084fc;
}