.overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    pointer-events: auto;
}

.loader {
    border: 5px solid #f3f3f3;
    border-top: 5px solid #555;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0%   { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}
.centered-loader {
    display: flex;
    justify-content: center;
    margin: 3rem;
}