body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: #f0fdf4;
  color: #1f2937;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 20px;
  text-align: center;
}

.title {
  font-size: 36px;
  font-weight: bold;
  color: #065f46;
  margin-bottom: 12px;
}

.subtitle {
  font-size: 18px;
  color: #4b5563;
  margin-bottom: 32px;
}

.btn {
  padding: 14px 26px;
  border: none;
  border-radius: 10px;
  font-size: 16px;
  cursor: pointer;
  transition: 0.2s;
  margin-bottom: 30px;
}

.green {
  background-color: #34d399;
  color: #065f46;
}

.green:hover {
  background-color: #10b981;
}

.dark-green {
  background-color: #065f46;
  color: #ffffff;
}

.dark-green:hover {
  background-color: #047857;
}

.preview {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 40px;
}

.preview img {
  width: 150px;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.download {
  background-color: #d1fae5;
  padding: 30px;
  border-radius: 12px;
}

.hidden {
  display: none;
}