body {
    background: linear-gradient(to right, #141e30, #243b55);
    font-family: 'Arial', sans-serif;
    color: #fff;
}

.login-container {
    background: rgba(0, 0, 0, 0.7);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.7);
    max-width: 400px;
    margin: 100px auto;
    text-align: center;
}

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

.form-control {
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #fff;
}

.form-control:focus {
    background: rgba(255, 255, 255, 0.2);
    border: none;
}

.btn-primary {
    background-color: #007bff;
    border: none;
}

.radio-theme {
    margin-bottom: 20px;
}

.radio-theme img {
    width: 80px;
    height: 80px;
}