.app-container {
  width: 100vw;
  height: 100vh;
  position: relative;
  background-color: white;
  overflow: hidden;
}

#controls {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 10;
  display: flex;
  gap: 10px;
}

button {
  padding: 8px 16px;
  cursor: pointer;
  background: #f0f0f0;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-weight: 500;
  transition: all 0.2s;
}

button:hover {
  background: #e0e0e0;
}

button.active {
  background: #333;
  color: white;
  border-color: #333;
}

.canvas-wrapper {
  width: 100%;
  height: 100%;
}