/* ============================================
   MARMO ITALIANO — Responsive Styles
   Mobile-first breakpoints
   ============================================ */

/* --- Mobile: < 576px (base styles in style.css) --- */

/* Single column grids */
.grid-2,
.grid-3,
.grid-4 {
    grid-template-columns: 1fr;
}

.split-section {
    grid-template-columns: 1fr;
    gap: 32px;
}

.footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
}

.footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
}

.footer-intro,
.footer-intro-actions {
    flex-direction: column;
    align-items: flex-start;
}

.footer-intro {
    gap: 22px;
    padding-bottom: 28px;
    margin-bottom: 28px;
}

.footer-intro-actions {
    width: 100%;
}

.footer-intro-actions .btn {
    width: 100%;
}

/* Mobile nav */
.nav-inner {
    min-height: 88px;
    padding: 14px 0;
    gap: 14px;
}

.nav-menu {
    position: fixed;
    top: 88px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #000000;
    flex-direction: column;
    padding: 24px;
    gap: 0;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
}

.nav-menu.open {
    transform: translateX(0);
}

.nav-menu a {
    padding: 14px 0;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}

.nav-dropdown {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: rgba(255,255,255,0.05);
    border-radius: 4px;
    display: none;
    padding: 0;
}

.nav-dropdown.open {
    display: block;
}

.nav-dropdown a {
    color: rgba(255,255,255,0.7);
    padding: 12px 20px;
    font-size: 0.85rem;
    border-bottom: none;
}

.nav-phone {
    margin-top: 16px;
    justify-content: center;
}

.nav-cta {
    display: none;
}

.nav-toggle {
    display: flex;
}

/* Hero mobile */
.hero h1 { 
    font-size: 2rem;
    text-align: center;
}
.hero p { 
    font-size: 1rem;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.home-story-grid,
.hero-metrics {
    grid-template-columns: 1fr;
}

.hero-media-secondary,
.visualizer-layout,
.visualizer-stage-details,
.home-contact-grid,
.home-contact-points {
    grid-template-columns: 1fr;
}

.hero-shell {
    display: block !important;
    grid-template-columns: 1fr !important;
    gap: 22px;
    text-align: center;
}

.hero-copy {
    max-width: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-actions {
    justify-content: center;
    width: 100%;
}

.hero-metrics {
    margin-left: auto;
    margin-right: auto;
    gap: 14px;
}

.home-hero {
    min-height: auto;
    padding: 138px 0 56px;
}

.home-hero h1 {
    max-width: 100%;
    text-align: center;
}

.home-hero p {
    text-align: center;
}

.hero-panel {
    display: none;
    order: 2;
}

.hero-panel-card,
.hero-stone-card,
.hero-map-card,
.hero-media-showcase,
.home-intro-card {
    border-radius: 22px;
}

.hero-media-primary {
    min-height: 260px;
}

.hero-media-tile {
    min-height: 180px;
}

.hero-media-footer,
.visualizer-actions,
.contact-info-actions,
.contact-map-actions {
    flex-direction: column;
    align-items: stretch;
}

.home-story-note {
    position: static;
    width: auto;
    margin-bottom: 16px;
}

.featured-carousel-scroll {
    height: max(320vh, calc(var(--featured-slide-count, 1) * 96vh));
}

.featured-carousel-slide {
    padding: 0;
}

.featured-carousel-media,
.featured-carousel-overlay {
    inset: 0;
    border-radius: 0;
    width: 100%;
    left: 0;
    top: 0;
    bottom: 0;
}

.featured-carousel-copy {
    max-width: none;
    margin: auto 16px 32px;
    padding: 16px 18px;
    align-self: end;
    justify-self: stretch;
    width: auto;
}

.featured-carousel-copy h3 {
    font-size: clamp(1.45rem, 7vw, 2.2rem);
}

.featured-carousel-copy p {
    font-size: 0.88rem;
    line-height: 1.5;
}

.featured-carousel-ui {
    left: 18px;
    right: 18px;
    transform: none;
    bottom: 16px;
    width: auto;
    justify-items: stretch;
}

.featured-carousel-counter {
    justify-content: center;
}


.cta-actions {
    align-items: stretch;
}

.cta-actions .btn,
.hero-actions .btn,
.hero-map-actions .btn,
.hero-media-footer .btn,
.visualizer-actions .btn,
.contact-info-actions .btn,
.contact-map-actions .btn {
    width: 100%;
}

.page-hero h1 { font-size: 1.75rem; }
.page-hero { padding: 120px 0 60px; }
.hero-inner { padding: 132px 0 56px; }
.products-hero-grid,
.products-hero-stats,
.products-toolbar-head,
.contact-hero-grid,
.contact-layout {
    grid-template-columns: 1fr;
}

.products-toolbar-head {
    display: grid;
    align-items: start;
}

.contact-form .form-row {
    grid-template-columns: 1fr;
}

.contact-form-panel,
.contact-info-card,
.contact-map-card,
#successCard {
    border-radius: 20px;
}

.contact-form-panel,
.contact-info-card,
.contact-map-card-full {
    padding: 20px;
}

.contact-section-head h2,
.contact-info-card h3,
.contact-map-card h3 {
    font-size: clamp(1.45rem, 7vw, 2rem);
}

.contact-form-actions .btn,
.contact-info-actions .btn,
.contact-map-actions .btn {
    width: 100%;
    min-width: 0;
}

.contact-map-head {
    flex-direction: column;
    align-items: flex-start;
}

.gallery-page-heading {
    grid-template-columns: 1fr;
}

.lightbox-meta {
    flex-direction: column;
    align-items: flex-start;
}

.gallery-grid {
    grid-template-columns: 1fr;
}

.gallery-card {
    min-height: 300px;
}

.zoom-indicator {
    width: 64px;
    height: 64px;
}

.zoom-indicator svg {
    width: 24px;
    height: 24px;
}

.lightbox-dialog {
    width: 90vw;
    padding: 12px;
    border-radius: 22px;
}

.lightbox-prev,
.lightbox-next {
    top: 50%;
    bottom: auto;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    font-size: 1.7rem;
}

.lightbox-prev {
    left: 10px;
}

.lightbox-next {
    right: 10px;
}

.lightbox-meta {
    grid-template-columns: 1fr;
    padding: 16px 14px 8px;
}

.lightbox-meta-tools {
    width: 100%;
    justify-content: space-between;
    align-items: center;
}

.lightbox-title {
    font-size: 1.05rem;
}

.lightbox-image {
    max-height: 54vh;
}

.lightbox-stage {
    min-height: auto;
}

.lightbox-counter-wrap {
    align-items: flex-start;
}

.about-intro-shell,
.gallery-intro-shell,
.gallery-intro-strip {
    grid-template-columns: 1fr;
}

.about-intro-shell,
.gallery-intro-shell {
    padding: 24px 20px;
}

.about-intro-copy h1,
.gallery-intro-copy h1 {
    max-width: none;
}

.about-intro-actions {
    flex-direction: column;
    align-items: stretch;
}

.about-hero-grid,
.gallery-hero-grid,
.about-story-grid,
.about-numbers-grid,
.about-values-grid,
.about-client-grid {
    grid-template-columns: 1fr;
}

.about-hero-metrics,
.about-stat-cards {
    grid-template-columns: 1fr;
}

.about-hero-visual,
.gallery-hero-stack {
    min-height: auto;
}

.about-hero-media,
.about-hero-media-main,
.about-hero-media-secondary,
.gallery-highlight-card,
.gallery-highlight-card-1,
.gallery-highlight-card-2,
.gallery-highlight-card-3 {
    position: relative;
    inset: auto;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    width: 100%;
    height: auto;
}

.about-hero-media-main,
.gallery-highlight-card-1,
.gallery-highlight-card-2,
.gallery-highlight-card-3 {
    min-height: 260px;
}

.about-hero-media-secondary {
    margin-top: 16px;
    min-height: 220px;
    border-width: 0;
}

.about-hero-note {
    position: static;
    width: auto;
    margin-top: 16px;
}

.about-visit-panel,
.gallery-visit-panel,
.gallery-toolbar {
    flex-direction: column;
    align-items: flex-start;
}

.gallery-toolbar,
.about-visit-panel,
.gallery-visit-panel {
    padding: 22px 20px;
}

.gallery-toolbar p {
    max-width: none;
}

.contact-map-head,
.contact-map-actions {
    flex-direction: column;
    align-items: stretch;
}

.contact-map-row {
    margin-top: 24px;
}

.contact-map-card-full {
    padding: 20px;
}

.contact-map-frame iframe {
    height: 300px;
}

/* Section mobile */
.section { padding: 48px 0; }
.section-header { margin-bottom: 32px; }
.section-header h2 { font-size: 1.75rem; }

/* Masonry mobile */
.masonry { columns: 1; }

/* Filter bar scroll */
.filter-bar {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 8px;
}

.filter-pill { white-space: nowrap; flex-shrink: 0; }
.products-toolbar-wrap { margin-top: -12px; }

/* Product detail mobile */
.product-detail-grid {
    grid-template-columns: 1fr;
    gap: 24px;
}

/* Contact two-column mobile */
.contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
}

/* Blog content mobile */
.blog-content { font-size: 0.95rem; }

/* Blog cards mobile */
.blog-card .card-body {
    padding: 20px;
}

.blog-card .card-body h3 {
    font-size: 1.1rem;
}

/* Pagination mobile */
.pagination {
    gap: 8px;
    margin-top: 40px;
}

.pagination-link {
    min-width: 38px;
    height: 38px;
    padding: 0 12px;
    font-size: 0.85rem;
}

/* --- Small: ≥ 576px --- */
@media (min-width: 576px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .masonry { columns: 2; }
    .home-collection-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }

    .hero h1 { font-size: 2.5rem; }

    .hero-actions .btn,
    .cta-actions .btn,
    .hero-map-actions .btn,
    .hero-media-footer .btn,
    .visualizer-actions .btn,
    .contact-info-actions .btn,
    .contact-map-actions .btn {
        width: auto;
    }

    .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .about-intro-actions {
        flex-direction: row;
        align-items: center;
    }

    .about-hero-metrics,
    .about-stat-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .gallery-highlight-card-1,
    .gallery-highlight-card-2,
    .gallery-highlight-card-3 {
        min-height: 300px;
    }

    .footer-intro-actions {
        flex-direction: row;
        width: auto;
    }

    .footer-intro-actions .btn {
        width: auto;
    }

    .contact-map-head,
    .contact-map-actions {
        flex-direction: row;
    }

    .contact-map-head {
        align-items: end;
    }

    .contact-map-actions {
        align-items: center;
    }

    .featured-carousel-scroll {
        height: max(360vh, calc(var(--featured-slide-count, 1) * 108vh));
    }

    .featured-carousel-media,
    .featured-carousel-overlay {
        top: 11vh;
        bottom: 15vh;
        left: 8%;
        width: 84%;
        border-radius: 26px;
    }

    .featured-carousel-copy {
        margin: auto 22px 36px;
        padding: 17px 20px;
    }
}

/* --- Tablet: ≥ 768px --- */
@media (min-width: 768px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .home-collection-header {
        grid-template-columns: minmax(0, 1fr) minmax(280px, 420px);
    }

    .home-collection-media {
        height: 460px;
    }

    .hero-media-secondary,
    .visualizer-stage-details,
    .home-contact-points { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-media-footer,
    .visualizer-actions,
    .contact-info-actions,
    .contact-map-actions {
        flex-direction: row;
        align-items: center;
    }

    .split-section { grid-template-columns: 1fr 1fr; }
    .hero-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .contact-grid { grid-template-columns: 1fr 1fr; }
    .contact-form .form-row { grid-template-columns: 1fr 1fr; }
    .about-intro-shell,
    .gallery-intro-shell { grid-template-columns: 1fr; }
    .about-values-grid,
    .about-client-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .about-hero-grid,
    .gallery-hero-grid,
    .about-story-grid,
    .about-numbers-grid { grid-template-columns: 1fr; }

    .contact-map-card-full {
        padding: 24px;
    }

    .contact-map-frame iframe {
        height: 360px;
    }

    .footer-grid { grid-template-columns: minmax(0, 1.15fr) repeat(2, minmax(0, 1fr)); }
    .page-hero h1 { font-size: 2.25rem; }
    .page-hero { padding: 140px 0 80px; }

    .section { padding: 64px 0; }

    .footer-intro {
        flex-direction: row;
        align-items: end;
        justify-content: space-between;
    }

    .footer-intro-actions {
        justify-content: flex-end;
    }

    .about-hero-copy h1,
    .gallery-hero-copy h1 {
        max-width: 11ch;
    }

    .featured-carousel-copy {
        justify-self: start;
        width: min(560px, 60vw);
        max-width: min(560px, 60vw);
        margin: 0 0 14vh 8%;
        padding: 17px 20px;
    }

    .featured-carousel-copy h3 {
        font-size: clamp(1.6rem, 3.5vw, 2.5rem);
    }

    .featured-carousel-ui {
        left: 50%;
        right: auto;
        transform: translateX(-50%);
        bottom: 6vh;
        width: min(220px, 26vw);
        justify-items: center;
    }

    .featured-carousel-counter {
        justify-content: center;
    }
}

@media (min-width: 992px) {
    .home-collection-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .home-collection-media {
        height: 520px;
    }

    .gallery-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .gallery-page-heading {
        grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
        align-items: end;
    }

    .lightbox-meta {
        flex-direction: row;
        align-items: end;
    }

    .about-intro-shell {
        grid-template-columns: minmax(0, 1.15fr) minmax(260px, 0.85fr);
    }

    .gallery-intro-shell {
        grid-template-columns: minmax(0, 1.1fr) minmax(240px, 0.9fr);
    }

    .gallery-intro-strip {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .about-hero-grid {
        grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
    }

    .gallery-hero-grid {
        grid-template-columns: minmax(0, 0.98fr) minmax(360px, 1.02fr);
    }

    .about-story-grid,
    .about-numbers-grid {
        grid-template-columns: minmax(0, 1.06fr) minmax(280px, 0.94fr);
    }

    .about-values-grid,
    .about-client-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .about-hero-metrics {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .featured-carousel-media,
    .featured-carousel-overlay {
        left: 15%;
        width: 70%;
        top: 13vh;
        bottom: 16vh;
    }

    .featured-carousel-copy {
        width: min(640px, 48vw);
        max-width: min(640px, 48vw);
        margin-left: 15%;
    }
}

/* --- Desktop: ≥ 992px --- */
@media (min-width: 992px) {
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-4 { grid-template-columns: repeat(4, 1fr); }
    .products-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .products-hero-grid { grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr); }
    .contact-hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr); }
    .contact-layout { grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr); }
    .contact-info-panel { grid-template-columns: repeat(2, 1fr); }
    .visualizer-layout { grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.82fr); }
    .visualizer-stage-details { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .home-contact-grid { grid-template-columns: minmax(0, 1.02fr) minmax(340px, 0.98fr); }
    .contact-map-row { margin-top: 32px; }
    .products-toolbar-head {
        display: flex;
        align-items: end;
    }

    .masonry { columns: 3; }
    .hero-shell { grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr); }
    .home-story-grid { grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr); }

    .product-detail-grid {
        grid-template-columns: 1.2fr 1fr;
        gap: 48px;
    }

    .footer-grid { grid-template-columns: minmax(0, 1.5fr) minmax(180px, 0.9fr) minmax(180px, 1fr) minmax(260px, 1.2fr); }

    /* Desktop nav */
    .nav-menu {
        position: static;
        flex-direction: row;
        padding: 0;
        transform: none;
        background: transparent;
        overflow: visible;
    }

    .nav-menu a {
        border-bottom: none;
        padding: 8px 16px;
        font-size: 0.9rem;
    }

    .nav-dropdown {
        position: absolute;
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(8px);
        background: var(--color-white);
        box-shadow: var(--shadow-hover);
        border-radius: 8px;
        padding: 8px 0;
    }

    .nav-menu li:hover .nav-dropdown {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-dropdown a {
        color: var(--color-text);
        padding: 10px 20px;
    }

    .nav-phone {
        margin-top: 0;
    }

    .nav-cta {
        display: inline-flex;
    }

    .nav-toggle { display: none; }

    .page-hero h1 { font-size: 2.75rem; }

    .section { padding: var(--section-padding); }

    .footer-bottom {
        flex-direction: row;
    }
}

/* --- Large Desktop: ≥ 1280px --- */
@media (min-width: 1280px) {
    .container { padding: 0 40px; }
}