* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Roboto", sans-serif;
  background-color: #f5f5f5;
  padding: 20px;
}

.container {
  display: flex;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
  background-color: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.controls {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px;
}

.layer-control {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-size: 14px;
  color: #666;
  text-transform: capitalize;
}

.layer-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  background: #ddd;
  border-radius: 2px;
  outline: none;
}

.layer-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  background: #2196f3;
  border-radius: 50%;
  cursor: pointer;
  transition: background 0.15s ease-in-out;
}

.layer-slider::-webkit-slider-thumb:hover {
  background: #1976d2;
}

.layer-value {
  font-size: 12px;
  color: #666;
}

.canvas-container {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

#imageCanvas {
  max-width: 100%;
  height: auto;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.download-btn {
  margin-top: 20px;
  padding: 12px 24px;
  background-color: #2196f3;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: background-color 0.15s ease-in-out;
}

.download-btn:hover {
  background-color: #1976d2;
}