.opc-block {
    position: relative;
}

.opc-block--loading > *:not(.opc-overlay) {
    filter: blur(2px);
    pointer-events: none;
    user-select: none;
}

.opc-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,.65);
    backdrop-filter: blur(1px);
    z-index: 10;
    pointer-events: all;
}

.opc-spinner {
    width: 28px; height: 28px;
    border: 3px solid #cfcfcf;
    border-top-color: #252523;
    border-radius: 50%;
    animation: opc-spin .8s linear infinite;
}

@keyframes opc-spin {
    to {
        transform: rotate(360deg);
    }
}