body {
  font-family: -apple-system, BlinkMacSystemFont, sans-serif;
  background: #f9f9f9;
  margin: 0;
  padding: 20px;
}
.container {
  max-width: 800px;
  margin: 0 auto;
  background: white;
  padding: 30px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}
.type-selector {
  margin: 20px 0;
}
.type-selector button {
  padding: 10px 16px;
  border: 1px solid #ddd;
  background: white;
  cursor: pointer;
  margin-right: 8px;
  border-radius: 6px;
}
.type-selector button.active {
  background: #4CAF50;
  color: white;
}
input, textarea {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ddd;
  border-radius: 6px;
}
.color-picker {
  margin: 10px 0;
}
.color-picker label {
  display: block;
  margin-bottom: 6px;
}
.color-picker input {
  width: 70px;
  height: 40px;
  border: none;
  cursor: pointer;
  margin-right: 8px;
}
.preview img {
  max-width: 100%;
  border: 1px solid #eee;
  margin: 10px 0;
  border-radius: 4px;
}
.pay-button {
  display: inline-block;
  background: #ff6b6b;
  color: white;
  padding: 12px 24px;
  text-decoration: none;
  border-radius: 6px;
  font-weight: bold;
  margin-top: 20px;
  display: block;
  width: fit-content;
}
.pay-button:hover {
  background: #ff5252;
}