body {
  background: #f4f4f4;
  color: #333;
  font-family: 'Segoe UI', sans-serif;
  display: flex;
  justify-content: center;
  padding: 40px;
}

.container {
  background: #fff;
  padding: 30px;
  border-radius: 10px;
  width: 100%;
  max-width: 700px;
  box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

h1 {
  color: #007BFF;
  text-align: center;
}

input, button {
  display: block;
  width: 100%;
  margin: 10px 0;
  padding: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

button {
  background-color: #007BFF;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  transition: background 0.3s;
}

button:hover {
  background-color: #0056b3;
}

.split-options {
  margin: 20px 0;
}

.split-options label {
  display: inline-block;
  margin-right: 20px;
}

.input-section {
  margin-top: 10px;
}

.hidden {
  display: none;
}

.preview-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 20px;
}

.preview-box {
  border: 1px solid #ddd;
  padding: 10px;
  border-radius: 6px;
  background: #fafafa;
  text-align: center;
  width: 200px;
}

canvas {
  width: 100%;
  border: 1px solid #ccc;
  margin-bottom: 10px;
}