html, body {
  margin: 0;
  padding: 0;
  background: #000;
  color: #fff;
  font-family: monospace;
}

#canvas {
  width: 100%;
  height: 75vh;
  margin-top: 20px;
  display: block;
  background: #000;
}

#controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  margin-top: 10px;
}

#ranges-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

#ranges-container label {
  display: flex;
  flex-direction: column;
  color: #fff;
  font-size: 14px;
}

input[type="range"], input[type="color"], select {
  margin-top: 4px;
}

#modeToggleBtn {
  padding: 6px 12px;
  background: rgba(0,0,0,0.5);
  color: #fff;
  border: 1px solid #333;
  border-radius: 6px;
  cursor: pointer;
}