.message-box {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    box-shadow: 5px 5px 5px #555;
    opacity: 0.8;
    padding: 20px;
    border: var(--border-color) 2px solid;
    border-radius: 10px;
    color: var(--border-color);
    font-size: 4vh;
    font-family: 'JosefinSans', sans-serif;
}

.code-input {
    padding: 10px;
}

.btn-primary {
    padding: 10px 20px;
}

.error-box {
    padding: 10px;
}

.error-message {
    font-size: 2vh;
    color: red;
}