/**
 * Gallery — Hero Slider, Portfolio Grid, Lightbox
 * Cristina Mazzitelli Interior Design Studio
 */

/* ── HERO SLIDER ──────────────────────────────────────────────────────────── */
.hero-slider {
    position: relative;
    height: 85vh;
    min-height: 550px;
    overflow: hidden;
    background: var(--color-anthracite);
    margin-top: var(--header-height);
}

.hero-slider__track {
    position: absolute;
    inset: 0;
    display: flex;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 1.2s var(--ease-in-out);
    overflow: hidden;
}

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

.hero-slide.is-prev {
    opacity: 0;
    z-index: 0;
}

.hero-slide__image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.06);
    transition: transform 8s linear;
    will-change: transform;
}

.hero-slide.is-active .hero-slide__image {
    transform: scale(1);
}

.hero-slide__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(26,26,26,0.6) 0%,
        rgba(26,26,26,0.3) 50%,
        rgba(26,26,26,0.15) 100%
    );
}

/* Contenuto slide */
.hero-slide__content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 2;
    padding: var(--space-20) var(--gutter) var(--space-24);
    max-width: var(--max-width);
    margin-inline: auto;
}

.hero-slide__eyebrow {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--ls-widest);
    text-transform: uppercase;
    color: rgba(250,248,245,0.6);
    display: block;
    margin-bottom: var(--space-4);
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.8s var(--ease-out-expo) 0.3s,
                transform 0.8s var(--ease-out-expo) 0.3s;
}

.hero-slide.is-active .hero-slide__eyebrow {
    opacity: 1;
    transform: translateY(0);
}

.hero-slide__headline {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, var(--text-6xl));
    font-weight: 300;
    line-height: var(--lh-tight);
    letter-spacing: var(--ls-tight);
    color: var(--color-ivory);
    margin-bottom: var(--space-8);
    max-width: 800px;
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.9s var(--ease-out-expo) 0.5s,
                transform 0.9s var(--ease-out-expo) 0.5s;
}

.hero-slide.is-active .hero-slide__headline {
    opacity: 1;
    transform: translateY(0);
}

.hero-slide__cta {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.8s var(--ease-out-expo) 0.8s,
                transform 0.8s var(--ease-out-expo) 0.8s;
}

.hero-slide.is-active .hero-slide__cta {
    opacity: 1;
    transform: translateY(0);
}

/* Controlli slider */
.hero-slider__controls {
    position: absolute;
    bottom: var(--space-10);
    right: var(--gutter);
    z-index: 10;
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.hero-slider__btn {
    width: 44px;
    height: 44px;
    border: 1px solid rgba(250,248,245,0.3);
    border-radius: 50%;
    background: transparent;
    color: var(--color-ivory);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-base), border-color var(--transition-base);
}

.hero-slider__btn:hover {
    background: rgba(250,248,245,0.15);
    border-color: rgba(250,248,245,0.6);
}

/* Dots indicatori */
.hero-slider__dots {
    position: absolute;
    bottom: var(--space-10);
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: var(--space-3);
}

.hero-dot {
    width: 24px;
    height: 2px;
    background: rgba(250,248,245,0.3);
    border: none;
    cursor: pointer;
    transition: background var(--transition-base), width var(--transition-slow);
    padding: 0;
}

.hero-dot.is-active {
    background: var(--color-ivory);
    width: 48px;
}

/* Slide counter */
.hero-slider__counter {
    position: absolute;
    top: calc(var(--space-16));
    right: var(--gutter);
    z-index: 10;
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--ls-wider);
    color: rgba(250,248,245,0.5);
}

/* Scroll indicator */
.hero-slider__scroll {
    position: absolute;
    bottom: var(--space-10);
    left: var(--gutter);
    z-index: 10;
}

/* ── PORTFOLIO GRID ───────────────────────────────────────────────────────── */
.portfolio-filters {
    display: flex;
    gap: var(--space-4);
    flex-wrap: wrap;
    margin-bottom: var(--space-16);
}

.filter-btn {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--ls-widest);
    text-transform: uppercase;
    padding: var(--space-3) var(--space-6);
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-base);
    border-radius: var(--radius-full);
}

.filter-btn:hover,
.filter-btn.is-active {
    border-color: var(--color-anthracite);
    color: var(--color-anthracite);
    background: var(--color-anthracite);
    color: var(--color-ivory);
}

.filter-btn.is-active {
    background: var(--color-magenta);
    border-color: var(--color-magenta);
}

/* Portfolio grid — colonne variabili */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.portfolio-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: var(--color-champagne);
}

/* Aspect ratio variabile per effetto editoriale */
.portfolio-item:nth-child(3n+1) { aspect-ratio: 3/4; }
.portfolio-item:nth-child(3n+2) { aspect-ratio: 4/5; }
.portfolio-item:nth-child(3n)   { aspect-ratio: 1/1; }

/* Elementi grandi in evidenza */
.portfolio-item--featured {
    grid-column: span 2;
    aspect-ratio: 16/9 !important;
}

.portfolio-item__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.9s var(--ease-out-expo);
    will-change: transform;
}

.portfolio-item__overlay {
    position: absolute;
    inset: 0;
    background: var(--overlay-dark);
    opacity: 0;
    transition: opacity var(--transition-slow);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-8);
}

.portfolio-item:hover .portfolio-item__image {
    transform: scale(1.06);
}

.portfolio-item:hover .portfolio-item__overlay {
    opacity: 1;
}

.portfolio-item__label {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: var(--ls-widest);
    text-transform: uppercase;
    color: var(--color-magenta);
    display: block;
    margin-bottom: var(--space-2);
    transform: translateY(12px);
    transition: transform 0.6s var(--ease-out-expo) 0.1s;
}

.portfolio-item__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 300;
    color: var(--color-ivory);
    line-height: var(--lh-snug);
    transform: translateY(12px);
    transition: transform 0.6s var(--ease-out-expo) 0.15s;
}

.portfolio-item:hover .portfolio-item__label,
.portfolio-item:hover .portfolio-item__title {
    transform: translateY(0);
}

/* Stato filtro: nascosto */
.portfolio-item.is-hidden {
    display: none;
}

.portfolio-item.is-filtering {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.portfolio-item.is-filtered-in {
    opacity: 1;
    transform: scale(1);
    transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-expo);
}

/* ── LIGHTBOX ─────────────────────────────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: var(--z-lightbox);
    background: rgba(10,10,10,0.97);
    display: flex !important; /* override hidden ma con visibility */
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
    padding: var(--space-8);
}

.lightbox:not([hidden]) {
    opacity: 1;
    visibility: visible;
}

.lightbox[hidden] {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.lightbox__content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
    max-width: min(90vw, 1200px);
    width: 100%;
}

.lightbox__img {
    max-height: 80vh;
    max-width: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xl);
    transition: opacity 0.3s ease;
}

.lightbox__img.is-loading {
    opacity: 0;
}

.lightbox__info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: 700px;
}

.lightbox__caption {
    font-family: var(--font-display);
    font-style: italic;
    font-size: var(--text-base);
    color: rgba(250,248,245,0.65);
}

.lightbox__counter {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    letter-spacing: var(--ls-widest);
    color: rgba(250,248,245,0.3);
}

.lightbox__close {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: 1;
    width: 44px;
    height: 44px;
    background: rgba(250,248,245,0.1);
    border: 1px solid rgba(250,248,245,0.2);
    border-radius: 50%;
    color: var(--color-ivory);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-base);
}

.lightbox__close:hover {
    background: rgba(250,248,245,0.2);
}

.lightbox__nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(250,248,245,0.08);
    border: 1px solid rgba(250,248,245,0.15);
    border-radius: 50%;
    color: var(--color-ivory);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-base), transform var(--transition-base);
    z-index: 1;
}

.lightbox__nav:hover {
    background: rgba(250,248,245,0.18);
}

.lightbox__nav--prev {
    left: var(--space-6);
}

.lightbox__nav--next {
    right: var(--space-6);
}

.lightbox__nav--prev:hover {
    transform: translateY(-50%) translateX(-2px);
}

.lightbox__nav--next:hover {
    transform: translateY(-50%) translateX(2px);
}

/* ── GALLERY HOMEPAGE PREVIEW ─────────────────────────────────────────────── */
.gallery-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.gallery-preview-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.gallery-preview-item:first-child {
    grid-row: span 2;
}

.gallery-preview-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 1;
    transition: transform 0.8s var(--ease-out-expo);
}

.gallery-preview-item:first-child img {
    aspect-ratio: auto;
}

.gallery-preview-item:hover img {
    transform: scale(1.05);
}

/* ── RESPONSIVE ───────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .portfolio-item--featured {
        grid-column: span 2;
    }

    .hero-slider__scroll {
        display: none;
    }
}

@media (max-width: 640px) {
    .hero-slider {
        height: 85svh;
    }

    .hero-slide__headline {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .portfolio-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2);
    }

    .portfolio-item { aspect-ratio: 1 !important; }
    .portfolio-item--featured { grid-column: span 2; aspect-ratio: 4/3 !important; }

    .gallery-preview {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-preview-item:first-child {
        grid-row: span 1;
    }

    .lightbox__nav {
        width: 36px;
        height: 36px;
    }

    .lightbox__nav--prev { left: var(--space-2); }
    .lightbox__nav--next { right: var(--space-2); }
}