body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background: #f0f0f0;
}

.login-container {
  max-width: 360px;
  margin: 100px auto;
  padding: 2rem;
  background: white;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  font-weight: bold;
  display: block;
  margin-bottom: 5px;
}

.form-group input {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #ccc;
  border-radius: 4px;
}

button {
  width: 100%;
  padding: 0.75rem;
  background: #007bff;
  border: none;
  color: white;
  border-radius: 4px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #0056b3;
}

.error {
  color: red;
  text-align: center;
  margin-bottom: 1rem;
}