body {
    background-color: black;
    background-size: cover;
    font-family: 'Courier New', monospace;
    color: #fff;
}

.auth-container {
    background: rgba(0, 0, 0, 0.8);
    padding: 30px;
    border-radius: 10px;
    max-width: 600px;
    margin: 50px auto;
    box-shadow: 0 0 20px #ff0000;
}

h1 {
    text-align: center;
    color: #ff4444;
    text-shadow: 0 0 10px red;
}

.question-block {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 5px;
}

input {
    width: 100%;
    padding: 8px;
    border: none;
    border-bottom: 2px solid #fff;
    background: transparent;
    color: white;
}

input:focus {
    outline: none;
    border-bottom: 2px solid #ff0000;
}

button {
    width: 100%;
    padding: 10px;
    background: #ff0000;
    color: white;
    font-size: 18px;
    border: none;
    cursor: pointer;
}

button:hover {
    background: darkred;
}

.correct {
    border-bottom: 2px solid limegreen !important;
}

.wrong {
    border-bottom: 2px solid red !important;
}

.error {
    color: #ff4444;
    text-align: center;
    margin-top: 15px;
}