/* =====================================================
   CASE STUDIES SLIDER
   Stile corporate elegante - sfondo blu navy + accento arancione
   Ottimizzato per mobile, tablet, desktop
   ===================================================== */

/* Wrapper esterno: fornisce lo "spazio di scroll" virtuale (desktop) */
.cs-slider-wrapper {
    position: relative;
    width: 100%;
}

.cs-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    /* Usa svh quando supportato per evitare il problema della barra browser su mobile */
    height: 100svh;
    min-height: 560px;
    overflow: hidden;
    background: #0a1f4d;
    color: #ffffff;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    /* Touch-action: blocca lo scroll verticale durante swipe orizzontale (gestito da JS) */
    touch-action: pan-y;
    -webkit-tap-highlight-color: transparent;
}

.cs-slider-wrapper.is-scroll-mode .cs-slider {
    position: sticky;
    top: 0;
}

/* In modalità touch lo slider non è sticky */
.cs-slider-wrapper.is-touch-mode .cs-slider {
    position: relative;
}

/* ---------- Slides di sfondo ---------- */
.cs-slide {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.9s ease-in-out;
    z-index: 1;
}

.cs-slide.is-active {
    opacity: 1;
    z-index: 2;
}

.cs-slide__overlay {
    position: absolute;
    inset: 0;
    /* Il colore viene impostato per-slide via la custom property
       --overlay-rgb (formato: "r, g, b"). Fallback al navy storico. */
    background: linear-gradient(
        180deg,
        rgba(var(--overlay-rgb, 10, 31, 77), 0.85) 0%,
        rgba(var(--overlay-rgb, 10, 31, 77), 0.78) 50%,
        rgba(var(--overlay-rgb, 10, 31, 77), 0.88) 100%
    );
}

/* ---------- Contenitore interno ---------- */
.cs-slider__inner {
    position: relative;
    z-index: 10;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 100%;
    height: 100%;
    padding: 40px clamp(20px, 5vw, 80px);
    box-sizing: border-box;
    /* Safe area per iPhone con notch / home bar */
    padding-top: max(40px, env(safe-area-inset-top));
    padding-bottom: max(40px, env(safe-area-inset-bottom));
    padding-left: max(20px, env(safe-area-inset-left), 5vw);
    padding-right: max(20px, env(safe-area-inset-right), 5vw);
}

/* ---------- Top bar (SUCCESS - STORIES) ---------- */
.cs-slider__top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    letter-spacing: 0.25em;
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    flex-shrink: 0;
}

/* ---------- Sezione centrale ---------- */
.cs-slider__main {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 40px;
    flex: 1;
    padding: 60px 0 60px;
    flex-wrap: wrap;
    min-height: 0;
}

/* Colonna sinistra: titolo + descrizione */
.cs-slider__text-col {
    flex: 1 1 60%;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 28px;
    align-self: flex-end;
}

/* ===========================================
   HEADING (titolo grande in serif)
   Crossfade tra heading di slide diverse.
   =========================================== */
.cs-slider__heading-wrap {
    position: relative;
    width: 100%;
    min-height: clamp(60px, 9vw, 160px);
}

.cs-slider__heading {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    margin: 0;
    font-family: Georgia, "Times New Roman", "Playfair Display", serif;
    font-size: 100px;
    font-weight: 400;
    line-height: 1;
    letter-spacing: -0.01em;
    color: #ffffff;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
    pointer-events: none;
    overflow-wrap: break-word;
    word-wrap: break-word;
    hyphens: auto;
}

.cs-slider__heading.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    padding-bottom: 50px;
}

/* ---------- Aside (logo + cta) ---------- */
.cs-slider__aside {
    flex: 0 1 260px;
    min-width: 220px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    padding-bottom: 12px;
    align-self: flex-end;
}

/* ===========================================
   SUBHEADING (sotto al titolo, colonna sinistra)
   =========================================== */
.cs-slider__subheading-wrap {
    position: relative;
    width: 100%;
    max-width: 700px;
    min-height: 4.8em;
}

.cs-slider__subheading {
    position: absolute;
    inset: 0;
    margin: 0;
    font-size: 20px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.92);
    font-weight: 400;
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.cs-slider__subheading.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

/* Inline HTML supportato nella descrizione */
.cs-slider__subheading strong,
.cs-slider__subheading b { font-weight: 600; color: #ffffff; }
.cs-slider__subheading em,
.cs-slider__subheading i { font-style: italic; }
.cs-slider__subheading a {
    color: #ffffff; text-decoration: underline;
    text-underline-offset: 3px; text-decoration-thickness: 1px;
    transition: color .3s;
}
.cs-slider__subheading a:hover { color: #b8884a; }
.cs-slider__subheading ul,
.cs-slider__subheading ol { margin: .5em 0 0; padding-left: 1.2em; }
.cs-slider__subheading p { margin: 0 0 .6em; }
.cs-slider__subheading p:last-child { margin-bottom: 0; }

/* ===========================================
   LOGO personalizzato (sotto la descrizione)
   =========================================== */
.cs-slider__logo-wrap {
    position: relative;
    width: 100%;
    min-height: 56px;
    margin-bottom: 50px;
}
.cs-slider__logo {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity .5s ease, transform .5s ease;
    pointer-events: none;
}
.cs-slider__logo.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.cs-slider__logo.is-empty { min-height: 0; }
.cs-slider__logo-wrap:has(.cs-slider__logo.is-active.is-empty) { min-height: 0; }
.cs-slider__logo-img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
    object-position: left center;
}

/* Utility colori neutri (testi secondari nella descrizione) */
.cs-slider .text-color-neutral-lighter,
.cs-slider__subheading .text-color-neutral-lighter { color: #d1d1d1; }
.cs-slider .text-color-neutral-light,
.cs-slider__subheading .text-color-neutral-light { color: #a3a3a3; }

/* ===========================================
   CTA BUTTON
   =========================================== */
.cs-slider__cta-wrap {
    position: relative;
    width: fit-content;
    min-height: 44px;
}

.cs-slider__cta {
    --cs-orange: #b8884a;
    --cs-orange-dark: #b8884a;
    position: absolute;
    top: 0;
    left: 0;
    display: inline-flex;
    align-items: center;
    gap: 16px;
    color: #ffffff;
    text-decoration: none;
    font-size: 15px;
    font-weight: 400;
    width: max-content;
    padding: 4px 0;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.5s ease, transform 0.5s ease;
    pointer-events: none;
}

.cs-slider__cta.is-active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.cs-slider__cta-icon {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--cs-orange);
    color: #ffffff;
    flex-shrink: 0;
    overflow: hidden;
    transition: background-color 0.4s ease;
}

.cs-slider__cta-icon::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        120deg,
        transparent 0%,
        rgba(255, 255, 255, 0.25) 50%,
        transparent 100%
    );
    transition: left 0.6s ease;
    z-index: 1;
}

.cs-slider__cta:hover .cs-slider__cta-icon::before {
    left: 100%;
}

.cs-slider__cta:hover .cs-slider__cta-icon,
.cs-slider__cta:active .cs-slider__cta-icon {
    background: var(--cs-orange-dark);
}

.cs-slider__cta-icon svg {
    position: relative;
    z-index: 2;
    width: 20px;
    height: 20px;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.cs-slider__cta:hover .cs-slider__cta-icon svg {
    animation: cs-arrow-bounce 0.6s cubic-bezier(0.65, 0, 0.35, 1);
}

@keyframes cs-arrow-bounce {
    0%   { transform: translate(0, 0); opacity: 1; }
    45%  { transform: translate(28px, -28px); opacity: 0; }
    46%  { transform: translate(-28px, 28px); opacity: 0; }
    100% { transform: translate(0, 0); opacity: 1; }
}

.cs-slider__cta-text {
    position: relative;
    display: inline-block;
    transition: transform 0.4s cubic-bezier(0.65, 0, 0.35, 1);
}

.cs-slider__cta-text::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 1px;
    background: #ffffff;
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
}

.cs-slider__cta:hover .cs-slider__cta-text {
    transform: translateX(6px);
    color: #ffffff;
}

.cs-slider__cta:hover .cs-slider__cta-text::after {
    transform: scaleX(1);
    transform-origin: left center;
}

/* Counter "01 / 06 · Project Name" — visibile solo su mobile */
.cs-slider__counter {
    display: none;
    align-items: baseline;
    gap: 8px;
    color: #ffffff;
    font-family: inherit;
    font-size: 13px;
    letter-spacing: .08em;
    line-height: 1.2;
}
.cs-slider__counter-current {
    font-size: 26px;
    font-weight: 500;
    color: #b8884a;
    line-height: 1;
}
.cs-slider__counter-sep,
.cs-slider__counter-total {
    color: rgba(255,255,255,.55);
    font-size: 14px;
}
.cs-slider__counter-label {
    margin-left: 8px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: #ffffff;
    flex: 0 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.cs-slider__arrows-group {
    display: flex;
    flex-direction: column;
    gap: clamp(10px, 1.2vw, 16px);
}

/* ===========================================
   ARROW BUTTONS · jump prev/next
   Saltano alla slide precedente/successiva
   (o alle sezioni sopra/sotto se agli estremi)
   =========================================== */

.cs-slider__arrows {
    position: absolute;
    top: 50%;
    right: clamp(16px, 2.4vw, 36px);
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: clamp(10px, 1.2vw, 16px);
    z-index: 12;
}

.cs-slider__arrow {
    width: clamp(56px, 5vw, 68px);
    height: clamp(56px, 5vw, 68px);
    border: 1px solid rgba(255,255,255,.35);
    background: rgba(255,255,255,.06);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #ffffff;
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: background .3s ease, border-color .3s ease, color .3s ease, transform .3s ease;
    -webkit-tap-highlight-color: transparent;
}
.cs-slider__arrow svg {
    width: clamp(22px, 2vw, 28px);
    height: clamp(22px, 2vw, 28px);
    transition: transform .3s ease;
}
.cs-slider__arrow:hover,
.cs-slider__arrow:focus-visible {
    background: #b8884a;
    border-color: #b8884a;
    outline: none;
}
.cs-slider__arrow--prev:hover svg { transform: translateY(-3px); }
.cs-slider__arrow--next:hover svg { transform: translateY(3px); }

/* Tablet — frecce orizzontali in basso a destra, leggermente più piccole */
@media (max-width: 1024px) {
    .cs-slider__arrows {
        flex-direction: row;
        top: auto;
        bottom: clamp(80px, 12vh, 120px);
        right: clamp(16px, 4vw, 28px);
        transform: none;
        gap: 10px;
    }
    .cs-slider__arrow { width: 52px; height: 52px; }
    .cs-slider__arrow svg { width: 22px; height: 22px; }
}

/* Mobile — frecce in flusso tra CTA e nav, NIENTE absolute (per non sovrapporre la nav) */
@media (max-width: 640px) {
    .cs-slider__inner {
        display: flex;
        flex-direction: column;
    }
    .cs-slider__top   { order: 0; }
    .cs-slider__main  { order: 1; }
    .cs-slider__arrows{ order: 2; }
    .cs-slider__nav   { display: none !important; }

    /* Mostra il counter al posto della nav */
    .cs-slider__counter { display: inline-flex; }
    .cs-slider__arrows-group { flex-direction: row; gap: 10px; }

    .cs-slider__arrows {
        position: static;
        transform: none;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 10px;
        margin: 0 0 24px;
        right: auto; bottom: auto;
    }
    .cs-slider__arrow { width: 48px; height: 48px; }
    .cs-slider__arrow svg { width: 20px; height: 20px; }
}

/* Mobile piccolo (≤ 380px) — manteniamo ≥ 44px per accessibilità */
@media (max-width: 380px) {
    .cs-slider__arrows {
        gap: 8px;
        margin: 0 0 16px;
    }
    .cs-slider__arrow { width: 44px; height: 44px; }
    .cs-slider__arrow svg { width: 18px; height: 18px; }
}

/* Landscape phone — spostiamo le frecce per non sovrapporsi al main */
@media (max-height: 600px) and (orientation: landscape) {
    .cs-slider__arrows {
        bottom: 16px;
        right: 16px;
    }
    .cs-slider__arrow { width: 42px; height: 42px; }
    .cs-slider__arrow svg { width: 18px; height: 18px; }
}

/* ===========================================
   NAVIGATION (linee/anni in basso)
   =========================================== */
.cs-slider__nav {
    display: grid;
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
    gap: 24px;
    width: 100%;
    margin-top: auto;
    flex-shrink: 0;
}

.cs-slider__nav-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    padding: 12px 0 0; /* area di tap maggiore in alto */
    background: transparent;
    border: none;
    cursor: pointer;
    color: #ffffff;
    text-align: left;
    font-family: inherit;
    transition: opacity 0.3s ease;
    opacity: 0.6;
    /* Min-height per touch target accessibile (44px raccomandato Apple) */
    min-height: 44px;
    -webkit-tap-highlight-color: transparent;
}

.cs-slider__nav-item:hover,
.cs-slider__nav-item:focus-visible {
    opacity: 1;
    outline: none;
}

.cs-slider__nav-item.is-active,
.cs-slider__nav-item.is-completed {
    opacity: 1;
}

.cs-slider__nav-line {
    display: block;
    width: 100%;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.cs-slider__nav-line::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #b8884a;
    transform: scaleX(var(--progress, 0));
    transform-origin: left center;
    transition: transform 0.12s linear;
}

.cs-slider__nav-item.is-completed .cs-slider__nav-line::after {
    transform: scaleX(1);
}

/* Quando l'autoplay sta animando la barra dell'attiva, sovrascriviamo
   la transizione (di default 0.12s lineare per lo scroll-jack) con una
   durata custom impostata da JS via --autoplay-bar-duration. Animazione
   lineare per percezione "tempo che scorre" uniforme. */
.cs-slider__nav-item.is-autoplay-running .cs-slider__nav-line::after {
    transition: transform var(--autoplay-bar-duration, 4000ms) linear;
}

/* In modalità touch la barra dell'attiva è sempre piena con
   transizione un po' più lenta (più visibile al cambio slide). */
.cs-slider-wrapper.is-touch-mode .cs-slider__nav-line::after {
    transition: transform 0.5s ease;
}

.cs-slider-wrapper.is-touch-mode .cs-slider__nav-item.is-active .cs-slider__nav-line::after {
    transform: scaleX(1);
}

.cs-slider__nav-content {
    display: flex;
    align-items: baseline;
    gap: 24px;
    width: 100%;
    flex-wrap: wrap;
}

.cs-slider__nav-year {
    font-size: 14px;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: #ffffff;
    flex-shrink: 0;
}

.cs-slider__nav-client {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #ffffff;
}

/* ===========================================
   TABLET (≤ 1024px) - swipe+tap mode
   Layout già verticale, due colonne diventano stack
   =========================================== */
@media (max-width: 1024px) {
    .cs-slider__inner {
        padding: 32px clamp(20px, 4vw, 48px);
        padding-top: max(32px, env(safe-area-inset-top));
        padding-bottom: max(32px, env(safe-area-inset-bottom));
    }

    .cs-slider__main {
        flex-direction: column;
        align-items: flex-start;
        padding: 40px 0 32px;
        gap: 28px;
    }

    .cs-slider__text-col {
        flex: 0 0 auto;
        width: 100%;
        min-width: 0;
        gap: 22px;
    }

    .cs-slider__heading-wrap {
        width: 100%;
        min-width: 0;
        min-height: clamp(56px, 11vw, 130px);
    }

    .cs-slider__heading {
        font-size: clamp(48px, 11vw, 130px);
    }

    .cs-slider__aside {
        flex: 0 0 auto;
        width: 100%;
        max-width: 520px;
        min-width: 0;
    }

    /* Su tablet la nav resta orizzontale con grid uguali */
    .cs-slider__nav {
        gap: 16px;
    }

    .cs-slider__nav-content {
        gap: 12px;
    }

    .cs-slider__nav-client {
        font-size: 12px;
        letter-spacing: 0.1em;
    }
}

/* ===========================================
   MOBILE (≤ 640px)
   =========================================== */
@media (max-width: 640px) {
    .cs-slider {
        height: auto;
        min-height: 0;
    }

    .cs-slider__inner {
        min-height: 540px;
        padding: 24px 20px;
        padding-top: max(24px, env(safe-area-inset-top));
        padding-bottom: max(24px, env(safe-area-inset-bottom));
    }

    .cs-slider__top {
        font-size: 11px;
        letter-spacing: 0.22em;
    }

    .cs-slider__main {
        padding: 32px 0 24px;
        gap: 24px;
    }

    .cs-slider__heading-wrap {
        min-height: clamp(60px, 16vw, 90px);
    }

    .cs-slider__heading {
        font-size: clamp(44px, 13.5vw, 72px);
        line-height: 1.02;
    }

    .cs-slider__subheading-wrap {
        min-height: 5.2em;
    }

    .cs-slider__subheading {
        font-size: 14px;
        line-height: 1.55;
    }

    .cs-slider__cta {
        font-size: 14px;
        gap: 14px;
    }

    .cs-slider__cta-icon {
        width: 42px;
        height: 42px;
    }

    .cs-slider__cta-icon svg {
        width: 18px;
        height: 18px;
    }

    /* Su mobile nav diventa verticale, una riga per slide */
    .cs-slider__nav {
        grid-auto-flow: row;
        grid-auto-columns: auto;
        gap: 14px;
    }

    .cs-slider__nav-item {
        gap: 10px;
        padding: 10px 0 0;
    }

    .cs-slider__nav-content {
        gap: 14px;
    }

    .cs-slider__nav-year {
        font-size: 13px;
    }

    .cs-slider__nav-client {
        font-size: 11px;
        letter-spacing: 0.12em;
    }
}

/* ===========================================
   MOBILE PICCOLO (≤ 380px)
   =========================================== */
@media (max-width: 380px) {
    .cs-slider__inner {
        padding: 20px 16px;
    }

    .cs-slider__heading {
        font-size: clamp(38px, 12vw, 56px);
    }

    .cs-slider__subheading {
        font-size: 13.5px;
    }

    .cs-slider__nav {
        gap: 12px;
    }

    .cs-slider__nav-client {
        font-size: 10.5px;
    }
}

/* ===========================================
   ALTEZZA SCHERMI BASSI (landscape phone)
   =========================================== */
@media (max-height: 600px) and (orientation: landscape) {
    .cs-slider {
        min-height: 480px;
    }

    .cs-slider__inner {
        padding: 16px clamp(20px, 4vw, 48px);
    }

    .cs-slider__main {
        padding: 16px 0;
        flex-direction: row;
        gap: 24px;
    }

    .cs-slider__heading {
        font-size: clamp(36px, 7vw, 80px);
    }

    .cs-slider__subheading-wrap {
        min-height: 3.2em;
    }

    .cs-slider__subheading {
        font-size: 13px;
        line-height: 1.4;
        -webkit-line-clamp: 3;
    }

    .cs-slider__nav {
        gap: 14px;
    }
}

/* ===========================================
   ANIMATION TUNING (utenti che preferiscono ridurre il motion)
   =========================================== */
@media (prefers-reduced-motion: reduce) {
    .cs-slide,
    .cs-slider__heading,
    .cs-slider__subheading,
    .cs-slider__cta,
    .cs-slider__nav-line::after {
        transition: opacity 0.2s linear !important;
        transform: none !important;
    }

    .cs-slider__heading.is-active,
    .cs-slider__subheading.is-active,
    .cs-slider__cta.is-active {
        transform: none !important;
    }
}