body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}
#login-container {
  background: #fff;
  padding: 20px 30px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
input[type="text"], input[type="password"] {
  width: 100%;
  padding: 10px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 5px;
}
button {
  width: 100%;
  padding: 10px;
  background: #28a745;
  border: none;
  color: white;
  font-size: 16px;
  border-radius: 5px;
  cursor: pointer;
}
#message {
  margin-top: 10px;
  font-size: 14px;
  color: red;
}