* { box-sizing: border-box; }
body {
  margin: 0;
  padding: 18px;
  background: #0e1116;
  color: #d7dde5;
  font: 15px/1.4 system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
h1 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: .04em; }
.bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: center;
  background: #161b22;
  border: 1px solid #232a33;
  border-radius: 10px;
  padding: 10px 14px;
}
.bar label { display: flex; gap: 6px; align-items: center; color: #9aa7b4; }
button, select {
  font: inherit;
  color: #d7dde5;
  background: #1f2731;
  border: 1px solid #2e3844;
  border-radius: 7px;
  padding: 6px 12px;
  cursor: pointer;
}
button:hover, select:hover { background: #27313d; border-color: #3d4a59; }
button:active { transform: translateY(1px); }
.counts {
  display: flex;
  gap: 22px;
  font-variant-numeric: tabular-nums;
  color: #9aa7b4;
}
.counts b { color: #6fd3a0; }
canvas {
  background: #0b0e13;
  border: 1px solid #232a33;
  border-radius: 10px;
  touch-action: none;
  max-width: 100%;
}