html, body {
  margin: 0;
  padding: 0;
  background: black;
  overflow: hidden;
  height: 100%;
}

/* butterchurn */
#canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
}

/* ascii overlay */
#ascii {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}

/* click hint */
#hint {
  position: fixed;
  bottom: 16px;
  left: 16px;
  z-index: 2;
  font-family: monospace;
  font-size: 12px;
  color: #aaa;
  opacity: 0.8;
}

#controls {
  position: fixed;
  top: 12px;
  right: 12px;
  z-index: 10;
  background: rgba(0,0,0,0.6);
  padding: 10px;
  font-family: monospace;
  font-size: 12px;
  color: #aaa;
  display: flex;
  gap: 10px;
}

#controls label {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

#controls select,
#controls input {
  background: black;
  color: #0f0;
  border: 1px solid #333;
}

#trackbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  padding: 8px 12px;
  background: rgba(0,0,0,0.8);
  font-family: monospace;
  font-size: 13px;
  color: #0f0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}