.fdw-popup {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0; top: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.5);
}

.fdw-popup-content {
  position: relative;
  background: #fff;
  width: 90%;
  max-width: 700px;
  margin: 50px auto;
  padding: 20px;
  border-radius: 10px;
  text-align: center;
}

#fdw-close {
  position: absolute;
  right: 10px;
  top: 5px;
  font-size: 24px;
  cursor: pointer;
}

canvas {
  border: 2px dashed #ccc;
  margin: 10px 0;
}

.fdw-controls button {
  background: #0073aa;
  color: #fff;
  border: none;
  padding: 8px 14px;
  margin: 5px;
  border-radius: 5px;
  cursor: pointer;
}

.fdw-controls button:hover {
  background: #005d8c;
}