* {
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #f5f5f5;
  margin: 0;
  padding: 20px;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 24px;
  border-radius: 12px;
}

h1 {
  font-size: 22px;
  text-align: center;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

label {
  display: block;
  margin-bottom: 6px;
  font-weight: 500;
  color: #333;
}

input[type="text"],
input[type="number"],
input[type="file"] {
  width: 100%;
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
}

.coords {
  display: flex;
  gap: 10px;
}

.coords input {
  flex: 1;
}

button,
#download {
  display: block;
  width: 100%;
  padding: 14px;
  margin-top: 20px;
  background: #E60012;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
}

button:disabled {
  background: #ccc;
  cursor: not-allowed;
}

.hidden {
  display: none !important;
}

#preview {
  margin-top: 20px;
  text-align: center;
}

#preview img {
  max-width: 100%;
  border: 1px solid #eee;
  border-radius: 8px;
}

#status {
  margin-top: 12px;
  text-align: center;
  color: #666;
  font-size: 14px;
}