/* Flipa front-end: lightbox + bookshelf */
.flipa-lb-trigger{cursor:pointer}
button.flipa-lb-trigger{display:block;align-items:stretch;gap:0;background:transparent;color:inherit;border:0;border-radius:var(--flipa-thumb-radius,12px);padding:0;font:inherit;line-height:1.2;cursor:pointer}
button.flipa-lb-trigger:hover{background:transparent}
img.flipa-lb-trigger{max-width:100%;height:auto;border-radius:var(--flipa-thumb-radius,12px);box-shadow:0 6px 20px rgba(0,0,0,.18);transition:transform .15s}
img.flipa-lb-trigger:hover{transform:translateY(-2px)}

.flipa-lb-overlay{position:fixed;inset:0;z-index:100000;background:rgba(12,15,22,.82);display:none;align-items:center;justify-content:center;padding:clamp(18px,4vmin,40px)}
.flipa-lb-overlay.open{display:flex}
.flipa-lb-box{position:relative;width:min(85vw);height:min(84vh,760px);max-width:92vw;max-height:84vh;background:#0f172a;border-radius:8px;overflow:hidden;box-shadow:0 22px 60px rgba(0,0,0,.38)}
.flipa-lb-box iframe{width:100%;height:100%;border:0;display:block;background:#fff}
.flipa-lb-close{position:absolute;top:12px;inset-inline-end:12px;z-index:2;width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.2);background:rgba(17,24,39,.8);color:#fff;font-size:20px;line-height:1;cursor:pointer;box-shadow:0 10px 26px rgba(0,0,0,.22);padding:0;display:grid;place-items:center;aspect-ratio:1/1}
.flipa-lb-close:hover{background:rgba(0,0,0,.9)}

@media(max-width:600px){.flipa-lb-overlay{padding:8px 12px}.flipa-lb-box{width:100vw;height:85vh;max-height:90vh}.flipa-lb-close{top:8px;inset-inline-end:8px}}

.flipa-shelf{display:grid;grid-auto-flow:row;grid-template-columns:repeat(var(--flipa-cols,4),minmax(0,1fr));gap:12px;align-items:start;justify-content:start}
@media(max-width:600px){.flipa-shelf{grid-template-columns:repeat(var(--flipa-mobile-cols,var(--flipa-cols,4)),minmax(0,1fr));gap:8px}}
.flipa-shelf-item{--flipa-thumb-radius:12px;position:relative;appearance:none;width:100%;max-width:min(100%,var(--flipa-cover-size,220px));margin-inline:0;padding:0;background:transparent;border:0;cursor:pointer;text-align:left;color:inherit;font:inherit;display:block;justify-self:start;border-radius:var(--flipa-thumb-radius)}
.flipa-shelf-cover{position:relative;display:block;width:100%;aspect-ratio:var(--flipa-cover-ratio,210 / 297);overflow:hidden;border:1px solid rgba(15,23,42,.12);border-radius:var(--flipa-thumb-radius);background:var(--flipa-cover-bg,#f3f4f6);box-sizing:border-box;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.flipa-shelf-cover>img,.flipa-shelf-cover>canvas{display:block;width:100%;height:100%;object-fit:contain;background:transparent;border-radius:var(--flipa-thumb-radius)}
.flipa-pdf-cover{position:relative;overflow:hidden;border-radius:var(--flipa-thumb-radius);background:var(--flipa-cover-bg,#f3f4f6)}
.flipa-pdf-cover::before{content:"";position:absolute;inset:18% 16%;border:1px solid rgba(15,23,42,.2)}
.flipa-pdf-cover::after{content:"";position:absolute;right:0;top:0;border-style:solid;border-width:0 18px 18px 0;border-color:transparent rgba(15,23,42,.18) transparent transparent;opacity:0;transition:opacity .2s ease}
.flipa-shelf-cover__label{position:absolute;left:0;right:0;bottom:0;padding:10px 12px;background:linear-gradient(to top,rgba(15,23,42,.72),transparent);border-radius:0 0 var(--flipa-thumb-radius,12px) var(--flipa-thumb-radius,12px);color:#fff;font-size:12px;font-weight:600;line-height:1.3;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.flipa-shelf-item:hover .flipa-shelf-cover{transform:translateY(-4px);border-color:rgba(15,23,42,.2);box-shadow:0 12px 22px rgba(15,23,42,.12)}
.flipa-shelf-item:hover .flipa-pdf-cover::after{opacity:1}
.flipa-shelf-item:focus-visible{outline:2px solid rgba(15,23,42,.45);outline-offset:3px;border-radius:var(--flipa-thumb-radius)}