body {
  font-family: sans-serif;
  background: #f2f2f2;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.login-container {
  background: white;
  padding: 30px;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  width: 300px;
}

.login-container h2 {
  text-align: center;
  margin-bottom: 20px;
}

.login-container input[type="text"],
.login-container input[type="password"] {
  width: 100%;
  padding: 8px;
  margin: 8px 0;
  box-sizing: border-box;
}

.login-container input[type="submit"] {
  width: 100%;
  padding: 10px;
  background: #007bff;
  border: none;
  color: white;
  cursor: pointer;
}

.login-container input[type="submit"]:hover {
  background: #0056b3;
}

.error {
  color: red;
  text-align: center;
  margin-bottom: 10px;
}