body {
    background-color: #f8f9fa;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}
.login-container {
    max-width: 400px;
    width: 100%;
    padding: 20px;
}
.login-card {
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
.login-header {
    background-color: #0d6efd;
    color: white;
    border-radius: 10px 10px 0 0;
    padding: 20px;
    text-align: center;
}
.login-body {
    padding: 20px;
    background-color: white;
    border-radius: 0 0 10px 10px;
}
.form-floating {
    margin-bottom: 15px;
}
.btn-login {
    width: 100%;
    padding: 10px;
}
.error-message {
    color: #dc3545;
    margin-bottom: 15px;
    text-align: center;
}
    @media(prefers-color-scheme: dark) {
        body {
            background-color: #212529;
        }
        .login-card {
            background-color: #495057;
        }
        .login-header {
            background-color: #495057;
        }
        .login-body {
            background-color: #343a40;
        }
        .btn-primary {
            background-color: #212529;
            border-color: #212529;
        }
        .btn-primary:hover {
            background-color: #495057;
            border-color: #495057;
        }
        .form-control {
            background-color: #343a40;
            color: white;
            border: 1px solid #495057;
        }
        .form-control:focus {
            background-color: #495057;
            color: white;
            border-color: #343a40;
            box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
            outline: none;
        }
        .error-message {
            color: #f8d7da;
        }
    }