body {
    margin: 0;
    font-family: 'Arial', sans-serif;
}

.screen-lock {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    display: none;
}

.lock-message {
    text-align: center;
    color: #000;
    padding: 20px;
    background-color: #fff;
    border-radius: 10px;
    font-weight: 500;
    position: relative;
}

.announcement-login-link {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: inline-block;
    color: #fff !important;
    text-decoration: none !important;
    font-size: 16px;
    font-weight: bold;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .announcement-login-link {
        top: 10px;
        right: 10px;
        padding: 10px 20px;
        font-size: 14px;
    }
}