:root {
    --layer-depth: 8px;
    --depth-shadow: 0 6px 20px var(--popple-shadow-color);
}

/* Depth card builds on layered card with 3D shadow */
.ow_depth_card {
    position: relative;
    background: var(--popple-paper);
    border-radius: var(--base-radius);
    border: 1px solid var(--base-border-color);
    box-shadow: var(--base-shadow), var(--depth-shadow);
    padding: 20px;
    margin-bottom: 20px;
}

.ow_depth_card::before {
    content: "";
    position: absolute;
    top: var(--layer-depth);
    left: var(--layer-depth);
    right: calc(-1 * var(--layer-depth));
    bottom: calc(-1 * var(--layer-depth));
    border-radius: inherit;
    background: inherit;
    box-shadow: inherit;
    z-index: -1;
}