/* =========================================================================
 * iCONsite — Lightbox globale (immagini)
 *
 * Asset core condiviso admin + frontend. Stesso aspetto, stesso comportamento
 * ovunque. La lightbox base esisteva in admin-style.css (admin-only);
 * qui è promossa a lib globale e estesa con frecce navigazione, counter,
 * didascalia.
 * ========================================================================= */

/* ---- Trigger (elemento cliccabile che apre la lightbox) ---------------- */
.img-lightbox-trigger {
    cursor: pointer;
    position: relative;
}

/* Hover overlay scuro + lente al centro: pattern "preview cliccabile".
   Usato dall'admin (preview header foto). I trigger della gallery NON
   hanno questo overlay perché mostrano già la foto a piena dimensione. */
.img-lightbox-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.45);
    opacity: 0;
    transition: opacity 0.22s ease;
    pointer-events: none;
}
.img-lightbox-trigger:hover .img-lightbox-overlay {
    opacity: 1;
}
.img-lightbox-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.55);
}
.img-lightbox-icon svg {
    width: 28px;
    height: 28px;
}

/* ---- Overlay fullscreen ------------------------------------------------- */
.img-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0s linear 0.2s;
}
.img-lightbox.is-open {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.2s ease, visibility 0s linear 0s;
}

/* Foto centrata, scala dolce su apertura per finezza visiva */
.img-lightbox-image {
    max-width: 90%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.96);
    transition: transform 0.22s ease;
}
.img-lightbox.is-open .img-lightbox-image {
    transform: scale(1);
}

/* ---- Bottone X (chiusura, in alto a destra) ---------------------------- */
.img-lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
}
.img-lightbox-close:hover {
    background: rgba(255, 255, 255, 0.25);
}
.img-lightbox-close svg {
    width: 22px;
    height: 22px;
}

/* ---- Frecce navigazione prev / next (visibili solo se gruppo > 1) ----- */
.img-lightbox-prev,
.img-lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 50%;
    background: rgb(123 123 123 / 41%);
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease;
    z-index: 50;
}
.img-lightbox-prev {
    left: 20px;
}
.img-lightbox-next {
    right: 20px;
}
.img-lightbox-prev:hover,
.img-lightbox-next:hover {
    background: rgb(123 123 123 / 69%);
}
.img-lightbox-prev svg,
.img-lightbox-next svg {
    width: 24px;
    height: 24px;
}
.img-lightbox-prev.is-visible,
.img-lightbox-next.is-visible {
    display: flex;
}

/* ---- Counter "3 / 12" (alto-centro, visibile solo se gruppo > 1) ------ */
.img-lightbox-counter {
    position: absolute;
    top: 26px;
    left: 50%;
    transform: translateX(-50%);
    color: #fff;
    font: 600 13px/1 system-ui, -apple-system, sans-serif;
    letter-spacing: 0.5px;
    padding: 6px 14px;
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.12);
    display: none;
}
.img-lightbox-counter.is-visible {
    display: block;
}

/* ---- Didascalia (basso-centro, visibile solo se trigger ha caption) --- */
.img-lightbox-caption {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    max-width: min(80%, 720px);
    color: #fff;
    font: 400 14px/1.4 system-ui, -apple-system, sans-serif;
    text-align: center;
    padding: 7px 18px;
    border-radius: 5px;
    background: rgba(0, 0, 0, 0.55);
    display: none;
}
.img-lightbox-caption.is-visible {
    display: block;
}

/* ---- Body lock (no scroll quando lightbox aperta) --------------------- */
body.lightbox-locked {
    overflow: hidden;
}