body {
  background: #f6f8fa;
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}
.container {
  max-width: 400px;
  margin: 60px auto;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
  padding: 32px 24px;
  text-align: center;
}
h1 {
  color: #1a73e8;
  margin-bottom: 12px;
}
p {
  color: #333;
  margin-bottom: 24px;
}
form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
input {
  padding: 10px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  font-size: 16px;
}
button {
  background: #1a73e8;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 12px;
  font-size: 16px;
  cursor: pointer;
  margin-top: 10px;
  transition: background 0.2s;
}
button:hover {
  background: #155ab6;
}
#successMessage {
  color: #1a73e8;
  font-weight: bold;
  margin-top: 20px;
}