body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 20px;
  background-color: #f5f5f5;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  color: #333;
}

p {
  text-align: center;
  color: #666;
}

.upload-section {
  text-align: center;
  margin: 20px 0;
}

.upload-section input[type="file"] {
  display: none;
}

.upload-section label {
  display: inline-block;
  padding: 10px 20px;
  background: #007bff;
  color: white;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

.upload-section label:hover {
  background: #0056b3;
}

.controls {
  margin: 20px 0;
}

.size-controls,
.color-controls {
  margin-bottom: 20px;
}

h3 {
  margin-top: 0;
  color: #333;
}

label {
  display: inline-block;
  margin-right: 10px;
}

input[type="number"],
select {
  padding: 5px;
  margin-right: 20px;
  border: 1px solid #ccc;
  border-radius: 4px;
}

input[type="checkbox"] {
  margin-right: 5px;
}

.color-mode {
  margin: 10px 0;
}

button {
  padding: 10px 20px;
  background: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background: #218838;
}

.preview-section {
  text-align: center;
  margin: 20px 0;
}

canvas {
  max-width: 100%;
  border: 1px solid #ccc;
  margin: 10px 0;
  image-rendering: pixelated;
}

.actions {
  margin-top: 20px;
}

.actions button {
  margin: 0 10px;
}