body {
}
.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.hidden {
    display: none;
}

.overlay-content {
    background: white;
    padding: 24px;
    border-radius: 8px;
    width: 260px;
    text-align: center;
}

.progress-bar {
    margin-top: 16px;
    height: 6px;
    background: #eee;
    border-radius: 3px;
    overflow: hidden;
}

.progress {
    width: 100%;
    height: 100%;
    background: #4caf50;
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}