/* File: assets/css/frontend-gallery.css
   Lightbox overlay per galleria Simple Events
   - Overlay full screen, controlli accessibili, animazioni leggere
   - Nessuna dipendenza esterna
*/

/* Evita lo scroll della pagina quando la lightbox è aperta */
body.se-lightbox-open { overflow: hidden; }

/* Contenitore overlay */
#se-lightbox {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: none;
  pointer-events: none; /* riabilitiamo dove serve */
}
#se-lightbox.is-open { display: block; }

/* Sfondo scuro cliccabile per chiudere */
#se-lightbox .se-lb-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.88);
  pointer-events: auto;
  z-index: 1; /* <— sotto lo stage */
}

/* Palco centrale della lightbox */
#se-lightbox .se-lb-stage {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: auto;          /* <— abilita click sullo stage */
  padding: 4.5rem;               /* spazio per frecce/chiudi */
  box-sizing: border-box;        /* <— i padding riducono l’area utile */
  z-index: 2;                    /* <— sopra il backdrop */
}

/* Figura immagine: occupa tutta l’area utile dello stage */
#se-lightbox .se-lb-figure {
  position: relative;
  margin: 0;
  width: 100%;
  height: 100%;
  max-width: none;               /* niente max basati su vh/vw */
  max-height: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .5rem;
  pointer-events: auto;
}

/* L’immagine si adatta (contain) senza tagli */
#se-lightbox .se-lb-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 10px 30px rgba(0,0,0,.5);
  opacity: 0;
  transition: opacity .25s ease-in-out;
}
#se-lightbox .se-lb-img.is-loaded { opacity: 1; }

/* Didascalia (usa alt) */
#se-lightbox .se-lb-caption {
  color: #f1f1f1;
  font-size: .9rem;
  line-height: 1.35;
  text-align: center;
  max-width: 86vw;
  word-break: break-word;
  min-height: 1.2em; /* per evitare layout shift */
}

/* Pulsante chiudi */
#se-lightbox .se-lb-close {
  position: absolute;
  top: .75rem;
  right: .75rem;
  width: 44px; height: 44px;
  border: 0; border-radius: 6px;
  background: rgba(255,255,255,0.1);
  color: #fff; font-size: 28px; line-height: 1;
  cursor: pointer; pointer-events: auto;
}
#se-lightbox .se-lb-close:hover,
#se-lightbox .se-lb-close:focus {
  background: rgba(255,255,255,0.18);
  outline: 2px solid rgba(255,255,255,0.35);
  outline-offset: 2px;
}

/* Frecce navigazione */
#se-lightbox .se-lb-prev,
#se-lightbox .se-lb-next {
  position: absolute;
  top: 50%; transform: translateY(-50%);
  width: 48px; height: 72px;
  border: 0; border-radius: 8px;
  background: rgba(255,255,255,0.12);
  color: #fff; cursor: pointer; pointer-events: auto;
}
#se-lightbox .se-lb-prev { left: .75rem; }
#se-lightbox .se-lb-next { right: .75rem; }

#se-lightbox .se-lb-prev::before,
#se-lightbox .se-lb-next::before {
  content: '';
  display: block; width: 0; height: 0; margin: 0 auto;
  border-top: 12px solid transparent;
  border-bottom: 12px solid transparent;
  margin-top: calc((72px - 24px)/2);
}
#se-lightbox .se-lb-prev::before { border-right: 16px solid #fff; }
#se-lightbox .se-lb-next::before { border-left: 16px solid #fff; }

#se-lightbox .se-lb-prev:hover,
#se-lightbox .se-lb-prev:focus,
#se-lightbox .se-lb-next:hover,
#se-lightbox .se-lb-next:focus {
  background: rgba(255,255,255,0.2);
  outline: 2px solid rgba(255,255,255,0.35);
  outline-offset: 2px;
}

/* Disabilitato quando c'è una sola immagine */
#se-lightbox .se-lb-prev:disabled,
#se-lightbox .se-lb-next:disabled {
  opacity: .35; cursor: default;
}

/* Riduci paddings su schermi piccoli */
@media (max-width: 640px) {
  #se-lightbox .se-lb-stage { padding: 3rem 2rem; }
  #se-lightbox .se-lb-prev, #se-lightbox .se-lb-next { width: 40px; height: 60px; }
  #se-lightbox .se-lb-prev::before,
  #se-lightbox .se-lb-next::before {
    border-top-width: 10px; border-bottom-width: 10px;
    margin-top: calc((60px - 20px)/2);
  }
}

/* Rispetto preferenze utente per ridurre le animazioni */
@media (prefers-reduced-motion: reduce) {
  #se-lightbox .se-lb-img { transition: none; }
}