.canvas-container {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: calc(100vh - 180px);
  background-color: #2a2a2a;
  border: 2px solid #444;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.canvas-container canvas {
  display: block;
}

.clear-selection-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: #ff4444;
  color: white;
  padding: 8px 16px;
  z-index: 10;
}

.clear-selection-btn:hover {
  background-color: #cc0000;
}

.selection-hint {
  position: absolute;
  bottom: 10px;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.8);
  color: #00ff00;
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 12px;
  z-index: 10;
  white-space: nowrap;
}