body {
    font-family: 'Roboto', sans-serif;
    background-color: #f0f2f5;
}

.login-form {
    background-color: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.login-form h2 {
    color: #343a40;
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 20px;
}

.login-form .btn-primary {
    font-size: 1rem;
    font-weight: bold;
    background-color: #007bff;
    border: none;
    transition: background-color 0.3s;
}

.login-form .btn-primary:hover {
    background-color: #0056b3;
}

.alert-danger {
    color: #842029;
    background-color: #f8d7da;
    border-color: #f5c2c7;
    border-radius: 8px;
    margin-bottom: 15px;
}