@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

/* ============================================ */
/* PAGE TRANSITIONS                              */
/* ============================================ */
body {
    transition: opacity 0.5s cubic-bezier(0.7, 0, 0.3, 1),
                filter 0.5s ease,
                transform 0.5s cubic-bezier(0.7, 0, 0.3, 1);
}

/* USCITA verso una landing dedicata: la home si "ritira" */
body.is-leaving {
    opacity: 0;
    filter: blur(8px);
    transform: scale(0.97);
    pointer-events: none;
}

body.is-leaving .carousel .list .item:nth-child(2) img {
    transform: translateY(-50%) scale(1.15);
    transition: transform 0.5s cubic-bezier(0.5, 0, 0.5, 1);
}

/* ENTRATA al ritorno: la home si ricompone (sfocato + opaco -> nitido) */
body.is-recomposing {
    opacity: 0;
    filter: blur(12px) brightness(1.2);
    transform: scale(1.02);
}


:root {
    --item1-transform: translateX(-100%) translateY(-5%) scale(1.5);
    --item1-filter: blur(30px);
    --item1-zindex: 11;
    --item1-opacity: 0;

    --item2-transform: translateX(0) translateY(0) scale(1);
    --item2-filter: blur(0);
    --item2-zindex: 10;
    --item2-opacity: 1;

    --item3-transform: translateX(50%) translateY(10%) scale(0.8);
    --item3-filter: blur(10px);
    --item3-zindex: 9;
    --item3-opacity: 1;

    --item4-transform: translateX(90%) translateY(20%) scale(0.5);
    --item4-filter: blur(30px);
    --item4-zindex: 8;
    --item4-opacity: 1;

    --item5-transform: translateX(120%) translateY(30%) scale(0.3);
    --item5-filter: blur(40px);
    --item5-zindex: 7;
    --item5-opacity: 0;

    --accent: #693eff;
    --bg: #f5f0fa;
    --bg-soft: #ebe5f5;
    --card: #ffffff;
    --ink: #111;
    --ink-soft: #5559;
}

* {
    box-sizing: border-box;
}

body {
    font-family: Poppins, sans-serif;
    margin: 0;
    background-color: var(--bg);
    background-image: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 50%, var(--bg) 100%);
    color: var(--ink);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: var(--ink);
}

button {
    cursor: pointer;
    font-family: inherit;
}

/* HEADER */
header {
    width: 1140px;
    max-width: 90%;
    margin: auto;
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 100;
}

header .logo {
    font-weight: 700;
    font-size: 1.2em;
    letter-spacing: 2px;
}

/* ============ BRAND LOGO (immagine condivisa) ============ */
.brand-logo {
    display: inline-flex;
    align-items: center;
    line-height: 1;
}
.brand-logo-img {
    display: block;
    height: 64px;
    width: auto;
    object-fit: contain;
    transition: transform 0.45s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.3s ease;
}
.brand-logo:hover .brand-logo-img {
    transform: scale(1.04);
}
.brand-logo-footer .brand-logo-img {
    height: 64px;
    margin-bottom: 6px;
}

/* Footer scuro condiviso (index, aero-lite): firma nera invisibile → invert */
footer .brand-logo-footer .brand-logo-img {
    filter: invert(1) brightness(1.05);
}

header nav a {
    margin-left: 30px;
    font-size: 0.95em;
    transition: color 0.2s;
}

/* ============ LANGUAGE PICKER (stile shared) ============ */
.lang-picker {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: 30px;
    padding: 4px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 30px;
}

.lang-btn {
    border: none;
    background: transparent;
    cursor: pointer;
    padding: 4px 9px;
    font-family: inherit;
    font-size: 0.75em;
    font-weight: 700;
    letter-spacing: 1px;
    color: #888;
    border-radius: 20px;
    transition: background 0.25s ease, color 0.25s ease;
    line-height: 1;
}

.lang-btn:hover {
    color: var(--ink);
}

.lang-btn.active {
    background: var(--ink);
    color: #fff;
}

header nav a:hover {
    color: var(--accent);
}

/* CAROUSEL */
.carousel {
    height: 100vh;
    min-height: 600px;
    margin-top: -80px;
    padding-top: 80px;
    background-image:
        radial-gradient(ellipse at 25% 30%, rgba(105, 62, 255, 0.13) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 100, 200, 0.09) 0%, transparent 55%),
        linear-gradient(180deg, var(--bg) 0%, #ffffff 18%, var(--bg-soft) 55%, var(--bg) 100%);
    position: relative;
    overflow: hidden;
}

.carousel .list {
    position: absolute;
    width: 1140px;
    max-width: 90%;
    height: 80%;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
}

.carousel .list .item {
    position: absolute;
    left: 0;
    width: 70%;
    height: 100%;
    font-size: 15px;
    transition: left 0.5s, opacity 0.5s;
}

.carousel .list .item:nth-child(1),
.carousel .list .item:nth-child(2) {
    transform: translateX(0);
    filter: blur(0);
    z-index: 10;
    opacity: 1;
}

.carousel .list .item img {
    width: 50%;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%) scale(1);
    transition: right 0.8s cubic-bezier(0.6, 0, 0.3, 1),
                transform 0.8s cubic-bezier(0.6, 0, 0.3, 1),
                filter 0.8s ease;
}

.carousel .list .item .introduce {
    opacity: 0;
    pointer-events: none;
    width: 400px;
    max-width: 90%;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    transition: opacity 0.5s;
}

.carousel .list .item .introduce .title {
    font-size: 2em;
    font-weight: 500;
}

.carousel .list .item .introduce .topic {
    font-size: 4em;
    font-weight: 600;
    line-height: 1;
    margin-top: 0.2em;
}

.carousel .list .item .introduce .des {
    font-size: small;
    color: var(--ink-soft);
    margin-top: 0.5em;
}

.carousel .list .item .introduce .seeMore {
    background-color: transparent;
    border: none;
    border-bottom: 1px solid #555;
    font-family: Poppins;
    font-weight: 700;
    letter-spacing: 2px;
    margin-top: 1.2em;
    padding: 5px 0;
}

.carousel .list .item:nth-child(2) .introduce {
    opacity: 1;
    pointer-events: auto;
}

.carousel .list .item:nth-child(1) {
    transform: var(--item1-transform);
    filter: var(--item1-filter);
    z-index: var(--item1-zindex);
    opacity: var(--item1-opacity);
    pointer-events: none;
}

.carousel .list .item:nth-child(3) {
    transform: var(--item3-transform);
    filter: var(--item3-filter);
    z-index: var(--item3-zindex);
    opacity: var(--item3-opacity);
}

.carousel .list .item:nth-child(4) {
    transform: var(--item4-transform);
    filter: var(--item4-filter);
    z-index: var(--item4-zindex);
    opacity: var(--item4-opacity);
}

.carousel .list .item:nth-child(5) {
    transform: var(--item5-transform);
    filter: var(--item5-filter);
    z-index: var(--item5-zindex);
    opacity: var(--item5-opacity);
    pointer-events: none;
}

.carousel .list .item:nth-child(n + 6) {
    opacity: 0;
    pointer-events: none;
}

.carousel .list .item .detail {
    opacity: 0;
    pointer-events: none;
}

/* ANIMAZIONE comparsa contenuto */
.carousel .list .item:nth-child(2) .introduce .title,
.carousel .list .item:nth-child(2) .introduce .topic,
.carousel .list .item:nth-child(2) .introduce .des,
.carousel .list .item:nth-child(2) .introduce .seeMore {
    opacity: 0;
    animation: showContent 0.5s 1s ease-in-out 1 forwards;
}

.carousel .list .item:nth-child(2) .introduce .topic {
    animation-delay: 1.2s;
}

.carousel .list .item:nth-child(2) .introduce .des {
    animation-delay: 1.4s;
}

.carousel .list .item:nth-child(2) .introduce .seeMore {
    animation-delay: 1.6s;
}

@keyframes showContent {
    from {
        transform: translateY(50px);
        filter: blur(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        filter: blur(0);
        opacity: 1;
    }
}

/* FRECCIE LATERALI */
/* ========= FRECCE: stile editorial / luxury house ========= */
.side-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    width: 78px;
    height: 78px;
    border-radius: 50%;
    border: 1px solid rgba(17, 17, 17, 0.12);
    background: transparent;
    color: rgba(17, 17, 17, 0.85);
    backdrop-filter: blur(8px) saturate(1.05);
    -webkit-backdrop-filter: blur(8px) saturate(1.05);
    transition: background-color 0.5s cubic-bezier(0.2, 0.8, 0.2, 1),
                color 0.4s ease,
                border-color 0.4s ease,
                transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* anello esterno animato (grow on hover) */
.side-arrow::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 50%;
    border: 1px solid rgba(17, 17, 17, 0.12);
    transform: scale(1);
    opacity: 0;
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s ease;
    pointer-events: none;
}

.side-arrow svg {
    width: 24px;
    height: 24px;
    transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    position: relative;
    z-index: 2;
}

.side-arrow:hover {
    background-color: var(--ink);
    color: #fff;
    border-color: var(--ink);
    transform: translateY(-50%) scale(1.04);
}

.side-arrow:hover::after {
    transform: scale(1.18);
    opacity: 1;
}

#prev:hover svg { transform: translateX(-4px); }
#next:hover svg { transform: translateX(4px); }

.side-arrow:active {
    transform: translateY(-50%) scale(0.96);
    transition-duration: 0.15s;
}

#prev {
    left: 30px;
}

#next {
    right: 30px;
}

#back {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 100;
    border: none;
    border-bottom: 1px solid #555;
    font-family: Poppins;
    font-weight: 500;
    letter-spacing: 3px;
    background-color: transparent;
    padding: 8px 14px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

/* ANIMAZIONI NEXT */
.carousel.next .list .item:nth-child(1) {
    animation: positionItem2 0.5s ease-in-out 1 forwards;
}

@keyframes positionItem2 {
    from {
        transform: var(--item2-transform);
        filter: var(--item2-filter);
        opacity: var(--item2-opacity);
    }
}

.carousel.next .list .item:nth-child(2) {
    animation: positionItem3 0.7s ease-in-out 1 forwards;
}

@keyframes positionItem3 {
    from {
        transform: var(--item3-transform);
        filter: var(--item3-filter);
        opacity: var(--item3-opacity);
    }
}

.carousel.next .list .item:nth-child(3) {
    animation: positionItem4 0.9s ease-in-out 1 forwards;
}

@keyframes positionItem4 {
    from {
        transform: var(--item4-transform);
        filter: var(--item4-filter);
        opacity: var(--item4-opacity);
    }
}

.carousel.next .list .item:nth-child(4) {
    animation: positionItem5 1.1s ease-in-out 1 forwards;
}

@keyframes positionItem5 {
    from {
        transform: var(--item5-transform);
        filter: var(--item5-filter);
        opacity: var(--item5-opacity);
    }
}

/* ANIMAZIONI PREV */
.carousel.prev .list .item:nth-child(2) {
    animation: positionItem1 0.5s ease-in-out 1 forwards;
}

@keyframes positionItem1 {
    from {
        transform: var(--item1-transform);
        filter: var(--item1-filter);
        opacity: var(--item1-opacity);
    }
}

.carousel.prev .list .item:nth-child(3) {
    animation: positionItem2 0.7s ease-in-out 1 forwards;
}

.carousel.prev .list .item:nth-child(4) {
    animation: positionItem3 0.9s ease-in-out 1 forwards;
}

.carousel.prev .list .item:nth-child(5) {
    animation: positionItem4 1.1s ease-in-out 1 forwards;
}

/* MODALITA' SHOW DETAIL */
.carousel.showDetail .list .item:nth-child(3),
.carousel.showDetail .list .item:nth-child(4) {
    left: 100%;
    opacity: 0;
    pointer-events: none;
}

.carousel.showDetail .list .item:nth-child(2) {
    width: 100%;
}

.carousel.showDetail .list .item:nth-child(2) .introduce {
    opacity: 0;
    pointer-events: none;
}

.carousel.showDetail .list .item:nth-child(2) img {
    right: 50%;
    transform: translateY(-50%) scale(1.22) translateX(-3%);
    filter: drop-shadow(0 40px 80px rgba(105, 62, 255, 0.35))
            drop-shadow(0 0 30px rgba(255, 100, 200, 0.15));
}

.carousel.showDetail .list .item:nth-child(2) .detail {
    opacity: 1;
    pointer-events: auto;
    width: 50%;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    text-align: right;
}

.carousel.showDetail .list .item:nth-child(2) .detail .title {
    font-size: 4em;
    font-weight: 600;
    line-height: 1;
}

.carousel.showDetail .list .item:nth-child(2) .detail .des {
    font-size: small;
    color: var(--ink-soft);
    margin-top: 1em;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications {
    display: flex;
    gap: 10px;
    width: 100%;
    border-top: 1px solid #5555;
    margin-top: 20px;
    padding-top: 10px;
    overflow: auto;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div {
    width: 90px;
    text-align: center;
    flex-shrink: 0;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div p:nth-child(1) {
    font-weight: 700;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout {
    margin-top: 20px;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button {
    font-family: Poppins;
    background-color: transparent;
    border: 1px solid #555;
    margin-left: 5px;
    padding: 8px 14px;
    font-weight: 500;
    letter-spacing: 2px;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2) {
    background-color: var(--accent);
    color: #eee;
    border-color: var(--accent);
}

.carousel.showDetail .list .item:nth-child(2) .detail .title,
.carousel.showDetail .list .item:nth-child(2) .detail .des,
.carousel.showDetail .list .item:nth-child(2) .detail .specifications,
.carousel.showDetail .list .item:nth-child(2) .detail .checkout {
    opacity: 0;
    animation: showContent 0.5s 1s ease-in-out 1 forwards;
}

.carousel.showDetail .list .item:nth-child(2) .detail .des {
    animation-delay: 1.2s;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications {
    animation-delay: 1.4s;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout {
    animation-delay: 1.6s;
}

.carousel.showDetail .side-arrow {
    opacity: 0;
    pointer-events: none;
}

.carousel.showDetail #back {
    opacity: 1;
    pointer-events: auto;
}

/* SFONDO DECORATIVO ::before */
.carousel::before {
    width: 500px;
    height: 300px;
    content: '';
    background-image: linear-gradient(70deg, blue, deeppink);
    position: absolute;
    z-index: -1;
    border-radius: 20% 30% 80% 10%;
    filter: blur(150px);
    top: 50%;
    left: 50%;
    transform: translate(-10%, -50%);
    transition: 1s;
}

.carousel.showDetail::before {
    transform: translate(-100%, -50%) rotate(70deg);
}

/* =============================== */
/* SEZIONI LANDING PAGE            */
/* =============================== */

.kicker {
    font-size: 0.78em;
    font-weight: 700;
    letter-spacing: 4px;
    color: var(--accent);
    text-transform: uppercase;
    margin: 0 0 12px;
}

/* FEATURES */
.features {
    padding: 130px 0;
    background: linear-gradient(180deg, var(--bg) 0%, #ffffff 50%, var(--bg) 100%);
}

.features-inner {
    width: 1140px;
    max-width: 90%;
    margin: auto;
}

.features-head {
    text-align: center;
    margin-bottom: 60px;
}

.features-head h2 {
    font-size: 2.5em;
    font-weight: 600;
    margin: 0;
    line-height: 1.2;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* Stile base feature-card sostituito dalla versione PREMIUM piu' sotto */

/* TESTIMONIAL */
.testimonial {
    padding: 160px 20px;
    background: linear-gradient(135deg, var(--bg-soft) 0%, #fff 100%);
    text-align: center;
    transition: background 0.6s;
    position: relative;
    overflow: hidden;
}

/* zone di blending top/bottom: garantiscono che il testimonial */
/* si sfumi sempre con le sezioni vicine, qualunque sia il colore dinamico */
.testimonial::before,
.testimonial::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 180px;
    pointer-events: none;
    z-index: 1;
}

.testimonial::before {
    top: 0;
    background: linear-gradient(180deg, var(--bg) 0%, transparent 100%);
}

.testimonial::after {
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, var(--bg) 100%);
}

.testimonial-inner {
    max-width: 760px;
    margin: auto;
    position: relative;
    z-index: 2;
}

.quote-mark {
    font-size: 6em;
    line-height: 0.5;
    color: var(--accent);
    opacity: 0.25;
    font-family: Georgia, serif;
    margin-bottom: 10px;
}

#product-quote {
    font-size: 1.7em;
    font-weight: 400;
    line-height: 1.4;
    margin: 0 0 24px;
    font-style: italic;
    color: #222;
    transition: opacity 0.4s;
}

#product-quote-author {
    font-size: 0.85em;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--accent);
    text-transform: uppercase;
    font-style: normal;
}

/* ABOUT */
.about {
    padding: 130px 0;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-soft) 100%);
}

.about-inner {
    width: 1140px;
    max-width: 90%;
    margin: auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-text h2 {
    font-size: 2.5em;
    font-weight: 600;
    margin: 0 0 24px;
    line-height: 1.2;
}

.about-text p {
    font-size: 1em;
    line-height: 1.7;
    color: #444;
    margin: 0 0 18px;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.about-stats > div {
    background: var(--card);
    padding: 32px 22px;
    border-radius: 14px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(80, 50, 150, 0.06);
}

.about-stats strong {
    display: block;
    font-size: 2.5em;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}

.about-stats span {
    display: block;
    font-size: 0.85em;
    color: #666;
    margin-top: 6px;
    letter-spacing: 1px;
}

/* NEWSLETTER */
.newsletter {
    padding: 280px 20px 120px;
    background: linear-gradient(180deg, var(--bg-soft) 0%, #2a1f4a 35%, #0a0a0a 100%);
    color: #eee;
    text-align: center;
}

.newsletter-inner {
    max-width: 600px;
    margin: auto;
}

.newsletter h2 {
    font-size: 2.4em;
    font-weight: 600;
    margin: 0 0 16px;
}

.newsletter p {
    font-size: 1em;
    color: #aaa;
    margin: 0 0 36px;
}

.newsletter-form {
    display: flex;
    gap: 0;
    max-width: 480px;
    margin: auto;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 60px;
    padding: 6px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 22px;
    border: none;
    background: transparent;
    color: #eee;
    font-family: inherit;
    font-size: 0.95em;
    outline: none;
}

.newsletter-form input::placeholder {
    color: #666;
}

.newsletter-form button {
    padding: 12px 28px;
    border: none;
    background: var(--accent);
    color: #fff;
    font-weight: 700;
    letter-spacing: 2px;
    border-radius: 60px;
    transition: background 0.2s;
}

.newsletter-form button:hover {
    background: #5230d8;
}

/* FOOTER */
footer {
    background: #0a0a0a;
    color: #888;
    padding: 70px 0 0;
}

.footer-inner {
    width: 1140px;
    max-width: 90%;
    margin: auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 50px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-col .logo {
    color: #fff;
    font-weight: 700;
    letter-spacing: 2px;
    font-size: 1.3em;
}

.footer-col p {
    color: #777;
    font-size: 0.9em;
    margin: 0;
    line-height: 1.6;
}

.footer-col strong {
    color: #fff;
    font-size: 0.9em;
    letter-spacing: 2px;
    margin-bottom: 6px;
}

.footer-col a {
    color: #888;
    font-size: 0.9em;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid #1a1a1a;
    padding: 24px 0;
    text-align: center;
    font-size: 0.8em;
    letter-spacing: 1px;
    color: #555;
}

/* =============================== */
/* DETAIL VIEW - PREMIUM CINEMATIC */
/* =============================== */

/* Titolo MAESTOSO con effetto gradient */
.carousel.showDetail .list .item:nth-child(2) .detail .title {
    font-size: clamp(3em, 6vw, 5.5em);
    font-weight: 700;
    line-height: 0.92;
    letter-spacing: -0.025em;
    background: linear-gradient(135deg, var(--ink) 0%, var(--accent) 60%, #ec4899 100%);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    animation: gradientFlow 6s ease infinite;
    margin: 0;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
    padding: 0 0.1em 0.06em 0;
}

@keyframes gradientFlow {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.carousel.showDetail .list .item:nth-child(2) .detail .des {
    font-size: 1em;
    line-height: 1.7;
    color: #444;
    margin-top: 1.2em;
    max-width: 460px;
    margin-left: auto;
}

/* SPECIFICATIONS come glass-morphism cards floating */
.carousel.showDetail .list .item:nth-child(2) .detail .specifications {
    display: grid !important;
    grid-template-columns: repeat(auto-fit, minmax(95px, 1fr));
    gap: 12px;
    border-top: none;
    padding-top: 0;
    margin-top: 28px;
    overflow: visible;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div {
    width: auto;
    text-align: left;
    padding: 14px 14px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.85);
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(80, 50, 150, 0.06);
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
                box-shadow 0.4s ease,
                background 0.4s ease;
    flex-shrink: 1;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(80, 50, 150, 0.15);
    background: rgba(255, 255, 255, 0.92);
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div p:nth-child(1) {
    font-size: 0.62em;
    letter-spacing: 1.8px;
    color: #888;
    margin: 0 0 6px;
    text-transform: uppercase;
    font-weight: 600;
}

.carousel.showDetail .list .item:nth-child(2) .detail .specifications div p:nth-child(2) {
    font-size: 1.25em;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
    background: linear-gradient(135deg, var(--ink), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
    padding-right: 0.08em;
}

/* CHECKOUT - bottoni PREMIUM */
.carousel.showDetail .list .item:nth-child(2) .detail .checkout {
    margin-top: 32px;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button {
    font-family: Poppins, sans-serif;
    font-weight: 700;
    letter-spacing: 2.5px;
    font-size: 0.78em;
    padding: 16px 28px;
    border-radius: 50px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
                box-shadow 0.4s ease,
                background 0.4s ease,
                color 0.4s ease,
                padding 0.4s ease;
    will-change: transform;
}

/* Bottone secondario (CARRELLO) - outlined ghost */
.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(1) {
    background: transparent;
    color: var(--ink);
    border: 1.5px solid rgba(0, 0, 0, 0.85);
    margin-left: 0;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(1)::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.5s cubic-bezier(0.65, 0, 0.35, 1);
    z-index: -1;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(1):hover {
    color: #fff;
    transform: translateY(-3px);
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(1):hover::before {
    transform: scaleX(1);
    transform-origin: left;
}

/* Bottone primario (PREZZO) - gradient + freccia animata + glow */
.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2) {
    background: linear-gradient(135deg, var(--accent), #ec4899);
    background-size: 200% 200%;
    color: #fff;
    border: none;
    padding-right: 50px;
    box-shadow: 0 10px 30px rgba(105, 62, 255, 0.35);
    animation: gradientFlow 5s ease infinite;
    margin-left: 0;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2)::after {
    content: '\2192';
    position: absolute;
    right: 22px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.3em;
    font-weight: normal;
    transition: right 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2):hover {
    transform: translateY(-3px);
    padding-right: 60px;
    box-shadow: 0 18px 45px rgba(105, 62, 255, 0.55),
                0 0 0 4px rgba(105, 62, 255, 0.15);
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2):hover::after {
    right: 14px;
}

/* Sweep effect su entrambi */
.carousel.showDetail .list .item:nth-child(2) .detail .checkout button .btn-sweep {
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 35%, rgba(255,255,255,0.35) 50%, transparent 65%);
    transform: translateX(-110%);
    transition: transform 0.7s ease;
    pointer-events: none;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:hover .btn-sweep {
    transform: translateX(110%);
}

/* Cursor parallax: transition piu' veloce per il follow del mouse */
.carousel.showDetail .list .item:nth-child(2) img.parallax-active {
    transition: transform 0.18s ease-out, filter 0.4s ease;
    will-change: transform;
}

/* Parallax background blob in detail */
.carousel.showDetail::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(105, 62, 255, 0.18), transparent 70%);
    top: 50%;
    left: 25%;
    transform: translate(-50%, -50%);
    filter: blur(60px);
    pointer-events: none;
    z-index: 0;
    animation: floatBlob 8s ease-in-out infinite;
}

@keyframes floatBlob {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-45%, -55%) scale(1.1); }
}

/* =============================== */
/* FEATURE CARDS - PREMIUM 3D      */
/* =============================== */

.feature-card {
    --x: 50%;
    --y: 50%;
    --rx: 0deg;
    --ry: 0deg;
    background: var(--card);
    background-image: radial-gradient(circle 280px at var(--x) var(--y), rgba(105, 62, 255, 0.15), transparent 65%);
    border: 1px solid rgba(105, 62, 255, 0.08);
    padding: 42px 34px 56px;
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    transform: perspective(1100px) rotateX(var(--rx)) rotateY(var(--ry));
    transform-style: preserve-3d;
    transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1),
                box-shadow 0.4s ease,
                border-color 0.3s ease,
                background-image 0.4s ease;
    cursor: pointer;
}

.feature-card:hover {
    border-color: rgba(105, 62, 255, 0.3);
    box-shadow: 0 30px 60px rgba(80, 50, 150, 0.18),
                0 0 0 1px rgba(105, 62, 255, 0.1);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover::before {
    opacity: 1;
}

/* numero piu grande, gradient text */
.feature-num {
    font-size: 1em;
    font-weight: 800;
    letter-spacing: 4px;
    color: var(--accent);
    margin-bottom: 26px;
    display: inline-block;
    padding: 6px 14px;
    background: rgba(105, 62, 255, 0.08);
    border-radius: 30px;
    transform: translateZ(30px);
    transition: background 0.3s ease;
}

.feature-card:hover .feature-num {
    background: rgba(105, 62, 255, 0.18);
}

.feature-card h3 {
    font-size: 1.5em;
    font-weight: 700;
    margin: 0 0 14px;
    line-height: 1.25;
    transform: translateZ(40px);
    transition: color 0.3s ease;
}

.feature-card:hover h3 {
    color: var(--accent);
}

.feature-card p {
    font-size: 0.95em;
    line-height: 1.65;
    color: #555;
    margin: 0;
    transform: translateZ(20px);
}

/* Freccia che appare al hover */
.feature-card::after {
    content: '\2197';
    position: absolute;
    bottom: 22px;
    right: 28px;
    font-size: 1.5em;
    color: var(--accent);
    opacity: 0;
    transform: translate(-12px, 12px) translateZ(30px);
    transition: opacity 0.4s ease, transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.feature-card:hover::after {
    opacity: 1;
    transform: translate(0, 0) translateZ(30px);
}

/* Override hover transform che era nel vecchio css */
.feature-card:hover {
    transform: perspective(1100px) rotateX(var(--rx)) rotateY(var(--ry)) translateY(-8px);
}

/* =============================== */
/* SCROLL REVEAL ANIMATIONS        */
/* =============================== */

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.2, 0.8, 0.2, 1),
                transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Variazioni: slide laterale */
.about-text.reveal {
    transform: translateX(-50px);
}
.about-text.reveal.in-view {
    transform: translateX(0);
}

.about-stats > div.reveal {
    transform: translateX(50px);
}
.about-stats > div.reveal.in-view {
    transform: translateX(0);
}

/* Header parallax-ish: leggera rotazione/scale per le card */
.feature-card.reveal {
    transform: translateY(50px) scale(0.95);
}
.feature-card.reveal.in-view {
    transform: translateY(0) scale(1);
}

/* Quote mark animato */
.testimonial-inner.reveal .quote-mark {
    transform: scale(0);
    transition: transform 1s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s;
}
.testimonial-inner.reveal.in-view .quote-mark {
    transform: scale(1);
}

/* =============================== */
/* BOTTONI MIGLIORATI              */
/* =============================== */

/* Bottone CTA principale (CHECKOUT del carosello detail) */
.carousel.showDetail .list .item:nth-child(2) .detail .checkout button {
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease, color 0.25s ease;
    cursor: pointer;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.6s ease;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:hover::before {
    left: 100%;
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(80, 50, 150, 0.25);
}

.carousel.showDetail .list .item:nth-child(2) .detail .checkout button:nth-child(2):hover {
    box-shadow: 0 10px 25px var(--accent);
}

/* "VEDI DI PIU'" del carosello: hover effect */
.carousel .list .item .introduce .seeMore {
    cursor: pointer;
    position: relative;
    transition: letter-spacing 0.3s ease, padding 0.3s ease;
}
.carousel .list .item .introduce .seeMore:hover {
    letter-spacing: 4px;
    padding-right: 12px;
}

/* Bottone "Vedi tutti" (back) hover */
#back {
    cursor: pointer;
    transition: letter-spacing 0.3s ease, color 0.25s ease;
}
#back:hover {
    letter-spacing: 5px;
    color: var(--accent);
}

/* Newsletter button: lift effect */
.newsletter-form button {
    position: relative;
    overflow: hidden;
    transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.newsletter-form button::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 30%, rgba(255, 255, 255, 0.25) 50%, transparent 70%);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}
.newsletter-form button:hover::after {
    transform: translateX(100%);
}
.newsletter-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(105, 62, 255, 0.5);
}

/* Nav links: underline animato */
header nav a {
    position: relative;
    transition: color 0.25s ease;
}
header nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.35s cubic-bezier(0.65, 0, 0.35, 1);
}
header nav a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Side arrows: glow accent sottile al hover (dentro il cerchio) */
.side-arrow::before {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.5s ease, transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
    pointer-events: none;
    z-index: 1;
    mix-blend-mode: screen;
}
.side-arrow:hover::before {
    opacity: 0.18;
    transform: scale(1.1);
}

/* Footer link hover - underline veloce */
.footer-col a {
    position: relative;
    width: max-content;
}
.footer-col a::before {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: #fff;
    transition: width 0.3s ease;
}
.footer-col a:hover::before {
    width: 100%;
}

/* RESPONSIVE */
@media screen and (max-width: 1023px) {
    .carousel .list .item {
        width: 90%;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .footer-inner {
        grid-template-columns: 1fr 1fr;
    }

    .side-arrow {
        width: 44px;
        height: 44px;
    }

    #prev { left: 15px; }
    #next { right: 15px; }
}

@media screen and (max-width: 767px) {
    .carousel {
        height: calc(100vh - 50px);
        min-height: 500px;
    }

    .carousel .list {
        height: 100%;
    }

    .carousel .list .item {
        width: 100%;
        font-size: 10px;
    }

    .carousel .list .item .introduce {
        width: 50%;
    }

    .carousel .list .item img {
        width: 40%;
    }

    .side-arrow {
        width: 38px;
        height: 38px;
        font-size: 1em;
    }

    #prev { left: 10px; }
    #next { right: 10px; }

    .features,
    .about,
    .testimonial,
    .newsletter {
        padding: 70px 0;
    }

    .features-head h2,
    .about-text h2,
    .newsletter h2 {
        font-size: 1.8em;
    }

    #product-quote {
        font-size: 1.2em;
    }

    .about-stats strong {
        font-size: 1.8em;
    }

    .footer-inner {
        grid-template-columns: 1fr;
    }

    .newsletter-form {
        flex-direction: column;
        background: transparent;
        border: none;
        padding: 0;
    }

    .newsletter-form input {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.15);
        border-radius: 60px;
        padding: 14px 22px;
    }

    .newsletter-form button {
        margin-top: 10px;
        padding: 14px;
    }

    .carousel.showDetail .list .item:nth-child(2) .detail .title {
        font-size: 2em;
    }

    .carousel.showDetail .list .item:nth-child(2) .detail .des {
        height: 100px;
        overflow: auto;
    }

    .carousel.showDetail .list .item:nth-child(2) .detail .checkout {
        display: flex;
        width: max-content;
        float: right;
    }
}