body {
  font-family: system-ui, Segoe UI, Roboto, Arial;
  margin: 18px;
  max-width: 1100px;
}

header {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

#canvas {
  border: 1px solid #ddd;
  margin-top: 8px;
  cursor: crosshair;
  max-width: 100%;
}

.controls {
  margin-top: 12px;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

textarea {
  width: 100%;
  height: 120px;
  margin-top: 8px;
  font-family: monospace;
}

button, select {
  padding: 8px 10px;
  border-radius: 6px;
  border: 1px solid #ccc;
  background: #fff;
}

#progress {
  font-size: 0.95rem;
  color: #444;
  margin-top: 6px;
  white-space: pre-wrap;
}

#progressBar {
  width: 260px;
  height: 12px;
  background: #eee;
  border-radius: 6px;
  overflow: hidden;
  display: none;
  border: 1px solid #ddd;
}

#progressFill {
  height: 100%;
  width: 0;
  background: #4caf50;
  transition: width 0.2s;
}

.note {
  font-size: 0.9rem;
  color: #666;
  margin-top: 6px;
}

.small {
  font-size: 0.85rem;
  color: #888;
}

.center-button {
  display: flex;
  justify-content: center;
  margin-top: 8px;
}