/* ── PRE Slider — Frontend Styles ──────────────────────────────────────────
 * 2026 Paolo Remonato
 * Carousel center-mode: slide centrale grande, slides adiacenti visibili ai lati
 * ────────────────────────────────────────────────────────────────────────── */

/* ── Variabili — definite su .prs-outer così cascadano su frecce interne ED esterne ── */
.prs-outer {
    --prs-height: 480px;
    --prs-slide-pct: 70%;
    --prs-gap: 10px;
    --prs-radius: 6px;
    --prs-arrow-size: 52px;
    --prs-arrow-bg: rgba(0, 96, 196, 0.9);
    --prs-arrow-hover: rgba(0, 96, 196, 1);
    --prs-dot-size: 13px;
    --prs-dot-bg: rgba(255, 255, 255, 0.45);
    --prs-dot-active: #0060c4;
    --prs-transition: 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Wrapper esterno: flex column (contiene .prs-middle + pallini esterni) ── */
.prs-outer {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* ── Riga centrale: flex row (contiene frecce esterne + slider) ── */
.prs-middle {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
}

.prs-middle .prs-slider-wrap {
    flex: 1;
    min-width: 0;
}

/* ── Contenitore slide ── */
.prs-slider-wrap {
    position: relative;
    width: 100%;
    height: var(--prs-height);
    overflow: hidden;
    user-select: none;
    touch-action: pan-y;
}

/* ── Stage: traccia orizzontale di slides ── */
.prs-stage {
    display: flex;
    align-items: stretch;
    height: 100%;
    gap: var(--prs-gap);
    will-change: transform;
    transition: transform var(--prs-transition);
}

.prs-stage.prs-no-anim {
    transition: none !important;
}

/* ── Singola slide ── */
.prs-slide {
    flex: 0 0 var(--prs-slide-pct);
    height: 100%;
    position: relative;
    overflow: hidden;
    border-radius: var(--prs-radius);
    transform: scale(0.88);
    transform-origin: center center;
    transition: transform var(--prs-transition);
}

/* Slide attiva: dimensione piena */
.prs-slide.prs-active {
    transform: scale(1);
}

/* Durante lo snap istantaneo (loop infinito) anche la scala non anima */
.prs-stage.prs-no-anim .prs-slide {
    transition: none !important;
}

/* Immagine principale */
.prs-slide-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    pointer-events: none;
    border-radius: var(--prs-radius);
}

/* Placeholder quando non c'è immagine */
.prs-slide-placeholder {
    width: 100%;
    height: 100%;
    background: #dde2e8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #888;
    font-size: 0.9rem;
    border-radius: var(--prs-radius);
}

/* Overlay link trasparente (copre tutta la slide) */
.prs-slide-link {
    position: absolute;
    inset: 0;
    z-index: 2;
    display: block;
}

/* ── Caption ── */
.prs-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 3;
    padding: 1.5rem 1.75rem 1.25rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.68) 0%, rgba(0, 0, 0, 0) 100%);
    color: #fff;
    pointer-events: none;
}

.prs-caption-title {
    margin: 0 0 0.3rem;
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.2;
    text-shadow: 0 1px 3px rgba(0,0,0,0.4);
}

.prs-caption-subtitle {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    font-weight: 400;
    text-shadow: 0 1px 2px rgba(0,0,0,0.35);
}

.prs-caption-comments {
    margin: 0;
    font-size: 0.875rem;
    opacity: 0.85;
}

/* ── Link bar: testo cliccabile sotto lo slider, tra immagine e dots ── */
.prs-link-bar {
    text-align: center;
    padding: 4px 0;
}

.prs-link-bar-link {
    display: inline-block;
    padding: 0.35rem 1.2rem;
    border: 1px solid currentColor;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s;
}

.prs-link-bar-link:hover,
.prs-link-bar-link:focus-visible {
    opacity: 0.7;
    text-decoration: none;
}

/* ── Frecce: stile base ── */
.prs-arrow {
    width: var(--prs-arrow-size);
    height: var(--prs-arrow-size);
    background: var(--prs-arrow-bg);
    border: none;
    border-radius: 4px;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: background 0.2s;
    outline-offset: 2px;
    flex-shrink: 0;
}

.prs-arrow:hover,
.prs-arrow:focus-visible {
    background: var(--prs-arrow-hover);
}

/* Frecce INTERNE (appese a .prs-slider-wrap) */
.prs-slider-wrap > .prs-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 20;
}
.prs-slider-wrap > .prs-prev { left: 10px; }
.prs-slider-wrap > .prs-next { right: 10px; }

/* Frecce ESTERNE (appese a .prs-middle, flex items nella riga) */
.prs-middle > .prs-arrow {
    position: static;
    width: 54px;
    height: 54px;
    border-radius: 6px;
    flex-shrink: 0;
}

/* ── Pallini: stile base ── */
.prs-dot {
    width: var(--prs-dot-size);
    height: var(--prs-dot-size);
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.7);
    background: var(--prs-dot-bg);
    cursor: pointer;
    padding: 0;
    transition: background 0.2s, transform 0.2s, border-color 0.2s;
    outline-offset: 2px;
}

.prs-dot.prs-active {
    background: var(--prs-dot-active);
    border-color: var(--prs-dot-active);
    transform: scale(1.35);
}

/* Pallini INTERNI (appesi a .prs-slider-wrap): sovrapposti sull'immagine */
.prs-slider-wrap > .prs-dots {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    gap: 8px;
    align-items: center;
}

/* Pallini ESTERNI (appesi a .prs-outer): sotto lo slider */
.prs-outer > .prs-dots {
    display: flex;
    justify-content: center;
    gap: 8px;
    align-items: center;
    padding: 4px 0;
}

/* Pallini esterni: colori adatti a sfondo chiaro */
.prs-outer > .prs-dots .prs-dot {
    border-color: rgba(0, 0, 0, 0.25);
    background: rgba(0, 0, 0, 0.18);
}

.prs-outer > .prs-dots .prs-dot.prs-active {
    background: var(--prs-dot-active);
    border-color: var(--prs-dot-active);
}

/* ── Responsive ── */
@media (max-width: 900px) {
    .prs-outer {
        --prs-arrow-size: 44px;
        --prs-dot-size: 11px;
    }

    /*
     * Frecce esterne → overlay interni.
     * Rimuovendole dal flusso flex, .prs-slider-wrap occupa tutta la larghezza
     * e il calcolo JS del centramento è corretto.
     * Su tablet le frecce restano sempre visibili (non c'è hover affidabile).
     */
    .prs-middle > .prs-arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        z-index: 20;
    }
    .prs-middle > .prs-prev { left: 10px; }
    .prs-middle > .prs-next { right: 10px; }

    /* Tablet: altezza libera — l'immagine centrale si mostra completa */
    .prs-slider-wrap {
        height: auto;
    }
    .prs-stage {
        height: auto;
        align-items: center;
    }
    .prs-slide {
        height: auto;
    }
    .prs-slide-img {
        height: auto;
    }
    .prs-slide-placeholder {
        height: 55vw;
    }
}

@media (max-width: 600px) {
    .prs-outer {
        --prs-arrow-size: 36px;
        --prs-gap: 6px;
        --prs-dot-size: 10px;
    }
    /* Sovrascrive flex-basis direttamente (l'inline style --prs-slide-pct avrebbe priorità sulla variabile) */
    .prs-slide {
        flex: 0 0 96%;
    }

    /* Mobile: altezza libera — il contenitore si adatta all'immagine centrale */
    .prs-slider-wrap {
        height: auto;
    }
    .prs-stage {
        height: auto;
        align-items: center;
    }
    .prs-slide {
        height: auto;
    }
    .prs-slide-img {
        height: auto;
    }
    /* Fallback per slide senza immagine */
    .prs-slide-placeholder {
        height: 60vw;
    }

    /* Frecce nascoste su smartphone: si usa lo swipe */
    .prs-arrow { display: none; }

    .prs-caption-title    { font-size: 1.05rem; }
    .prs-caption-subtitle { font-size: 0.875rem; }
}