/* ========== CSS SLIDESHOW ========== */

/* Wrapper */
.slideshow-wrapper {
    border-radius: 5px;
    overflow: hidden;
    background-color: #EBEBEB;
    margin: 0;
}

/* Varianti layout */
.slideshow-wrapper.right { float: right; margin-left: 1.2rem; margin-right: 0; }
.slideshow-wrapper.left { float: left; margin-right: 1.2rem; margin-left: 0; }
.slideshow-wrapper.center { 
    margin: 1rem auto; /* centra il wrapper */ 
    float: none; 
    width: auto; max-width: 1100px; 
    display: flex; justify-content: center; 
}

.slideshow-wrapper.center .slideshow-container {
    max-width: 100%;
    width: 46rem;;
}

/* Container slideshow */
.slideshow-container {
    position: relative;
    width: 44rem;
    height: 33rem;
    display: flex;
    flex-direction: column;
    padding: 5px;
    box-sizing: border-box;
}

.main-slide {
    position: relative;
    flex: 1;
    overflow: hidden;
    display: flex;
}

.slides-track {
    display: flex;
    width: 100%;
    height: 100%;
    transition: transform 0.45s ease;
}

.slides-track img.slide {
    width: 100%;
    height: calc(100% - 8px);
    object-fit: contain;
    object-position: center;
    margin-top: 8px;
    flex: 0 0 100%;
    padding: 0 12px;
    box-sizing: border-box;
}

/* CONTROLLI */
.slideshow-container .controls {
    position: absolute;
    bottom: 6px;
    right: 10px;
    opacity: 0;
    transition: opacity 0.2s;
    z-index: 10000;
    display: flex; 
    justify-content: center; 
    gap: 5px; 
    align-items: center; 
}

.slideshow-container:hover .controls { opacity: 1; }

.controls button, button.prev, button.next {
    background: rgba(0,0,0,0.55);
    color: white;
    border: none;
    border-radius: 5px;
    padding: 5px 12px;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10000;
}

.controls button:hover, button.prev:hover, button.next:hover {
    background: rgba(0,0,0,0.75);
}

/* Frecce laterali */
button.prev, button.next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.5);
    font-size: 2rem;
    padding: 0.5rem;
    opacity: 0;
    z-index: 10000;
}

.slideshow-container:hover button.prev,
.slideshow-container:hover button.next { opacity: 1; }

button.prev { left: 10px; }
button.next { right: 10px; }

/* THUMBNAILS */
.thumbnails {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    gap: 0.4rem;
    margin-top: 5px;
    padding: 0 5px;
    min-height: 3.5rem;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    flex-shrink: 0;
    z-index: 10000;
}

.thumbnails.centered {
    justify-content: center;
    overflow-x: hidden;
}

.thumbnails img.thumb {
    width: 3.6rem;
    height: 2.7rem;
    object-fit: cover;
    cursor: pointer;
    opacity: 0.6;
    border: 2px solid transparent;
    border-radius: 4px;
    transition: opacity 0.2s, border-color 0.2s;
}

.thumbnails img.thumb.active {
    border-color: white;
    opacity: 1;
}

.thumbnails.hide-when-fullscreen {
    visibility: hidden;
}

button.hide-when-fullscreen {
    visibility: hidden;
}

/* Variante SMALL per wrapper a sinistra */
.slideshow-wrapper.left.small {
    width: 580px;          /* larghezza ridotta per small */
    max-width: 100%;       /* sicurezza su mobile */
    height: auto;          /* lascia che l’altezza si adatti al contenuto */
    margin-bottom: 0.6rem;
}

.slideshow-wrapper.left.small .slideshow-container {
    width: 100%;           /* si adatta al wrapper piccolo */
    height: 26.4rem;         /* altezza ridotta rispetto al normale */
}


/* FULLSCREEN */
.slideshow-container.expanded {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 95%;
    height: auto;
    max-height: 90vh;
    z-index: 10001;
    display: flex;
    flex-direction: column;
    background: transparent;
}

.slideshow-container.expanded .main-slide { 
    flex: 1; 
    height: auto; 
}

.slideshow-container.expanded .slides-track {
    height: auto;
}

.slideshow-container.expanded .slides-track img.slide {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 90vh;
    object-fit: contain;
}

/* Frecce fullscreen sempre cliccabili con fade */
.slideshow-container.expanded button.prev,
.slideshow-container.expanded button.next {
    opacity: 0.4;                  /* leggermente visibili di default */
    transition: opacity 0.25s ease;
}

/* Al passaggio del mouse sul carousel diventano pienamente visibili */
.slideshow-container.expanded:hover button.prev,
.slideshow-container.expanded:hover button.next { opacity: 1; }

/* Posizionamento ai bordi dello schermo in fullscreen */
.slideshow-container.expanded button.prev { left: 20px; right: auto; }
.slideshow-container.expanded button.next { right: 20px; left: auto; }

/* Su desktop grandi, frecce più grandi */
@media (min-width: 1200px) {
    .slideshow-container.expanded button.prev,
    .slideshow-container.expanded button.next {
        font-size: 2.5rem;
        padding: 0.75rem;
    }
}

/* Overlay */
.slideshow-overlay {
    position: fixed;
    inset: 0;
    /* Sfondo immagine + overlay scuro */
    background:
        linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.65)),
        url("https://www.vescovotypewriters.com/images/mechanism2.jpg");

    background-size: cover;       /* Riempe tutto lo schermo, anche ritagliando */
    background-position: center;     /* centra verticalmente e orizzontalmente */
    background-repeat: no-repeat;    /* non ripete l’immagine */
    
    backdrop-filter: blur(4px);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity .3s;
}

.slideshow-overlay.active { opacity: 1; visibility: visible; }

body.gallery-open { overflow: hidden; }

/* BREAKPOINT MOBILE */
@media (max-width: 900px) {
    .slideshow-wrapper { float: none; width: 100%; margin: 1rem auto; }
    .slideshow-wrapper.left.small { width: 100%; margin-bottom: 1.4rem; }
    .slideshow-wrapper.left.small .slideshow-container { height: 26rem; width: 100%; padding: 0; }
    .slideshow-container { height: 26rem; width: 100%; padding: 0; }
    .slideshow-container.expanded .main-slide {
        display: flex;
        justify-content: center;
        align-items: center;
        overflow: hidden;
    }
    
    .slideshow-container.expanded .slides-track img.slide {
        width: auto;
        max-width: 100%;
        height: auto;
        max-height: 75vh;
        max-height: 80dvh; /* nuova unità utile in landscape */
        object-fit: contain;
    }
    .thumbnails img.thumb { width: 3.2rem; height: 2.4rem; }
}

@media (max-width: 768px) { 
    .slideshow-container { height: 22rem; width: 100%; padding: 0; } 
    .slideshow-container.expanded .thumbnails {padding-bottom: 20px; }
    .slideshow-overlay {
        background:
            linear-gradient(rgba(0,0,0,0.75), rgba(0,0,0,0.75)),
            url("https://www.vescovotypewriters.com/images/mechanism3.jpg");
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
    button.prev, .next {display: none;}
}

@media (max-width: 480px) {
    .slideshow-container { height: 20rem; }
    .controls { bottom: 8px; right: 8px; }
    .controls button { padding: 12px 14px; font-size: 18px; }
    .thumbnails { margin-top: 8px; }
}