body {
  margin: 0;
  background-color: #222;
  color: #ddd;
  font-family: sans-serif;
}

.container {
  width: 1280px;
  margin: 0 auto;
  padding: 10px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.app-header h1 {
  margin: 0.67em 0;
}

.phase-playback-toggle {
  width: 44px;
  height: 34px;
  border: 1px solid #777;
  border-radius: 4px;
  background: #333;
  color: #eee;
  font-size: 18px;
  line-height: 1;
  cursor: pointer;
}

.phase-playback-toggle:hover {
  background: #444;
}

.phase-playback-toggle[aria-pressed="true"] {
  border-color: #aaa;
  background: #555;
}

.controls {
  margin-bottom: 10px;
  padding: 8px 0;
}

.control-row {
  display: flex;
  align-items: flex-start;
}

.control-group-title {
  width: 212px;
  margin: 0 0 5px 0;
  color: #fff;
  font-size: 16px;
}

.control-stack {
  display: flex;
  flex-direction: column;
}

.control-line {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 14px;
}

.control-label-text {
  display: inline-block;
  width: 256px;
  text-align: left;
}

.control-line input[type="range"] {
  width: 300px;
}

.control-line input[type="range"]:disabled {
  opacity: 0.4;
}

.inline-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.radio-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.radio-group label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  white-space: nowrap;
}

.value-label {
  min-width: 60px;
  text-align: right;
}

.checkbox-controls {
  display: flex;
  gap: 15px;
  margin-bottom: 10px;
}

.check-blue,
.check-yellow,
.check-red {
  display: flex;
  align-items: center;
  gap: 5px;
}

.check-blue {
  color: #00aaff;
}

.check-yellow {
  color: #ffdd00;
}

.check-red {
  color: #ff3333;
}

canvas {
  display: block;
  margin: 0 auto;
  border: 1px solid #555;
  background-color: #333;
}

.description {
  margin-top: 10px;
  color: #ccc;
  font-size: 14px;
  line-height: 1.4;
}