{{ $cover_src := .Params.bookcase_cover_src | default .Params.bookcase_cover_src_dark }}
{{ $cover_src_dark := .Params.bookcase_cover_src_dark | default .Params.bookcase_cover_src }}
{{ $cover_title := .Params.bookcase_cover_title | default .Title }}

<div class="bookcase-item">
    <figure>
        <img src="{{ $cover_src | absURL }}" class="bookcase-item-img-light">
        <img src="{{ $cover_src_dark | absURL }}" class="bookcase-item-img-dark">
        <a href="{{ .RelPermalink }}" class="bookcase-item-overlay"></a>
    </figure>
    <figcaption>
        <a href="{{ .RelPermalink }}">{{ $cover_title }}</a>
    </figcaption>
</div>