/* ==========================================================================
   RKS MODELER — Responsive
   Desktop-first adjustments. Tested widths: 320 · 375 · 390 · 430 · 768 ·
   1024 · 1280 · 1440 · 1920.
   ========================================================================== */

/* ---------- Large screens ---------- */
@media (min-width: 1680px) {
    :root { --max: 1560px; }
}

/* ---------- ≤ 1439px ---------- */
@media (max-width: 1439px) {
    .header-call__text { display: none; }
}

/* ---------- ≤ 1279px ---------- */
@media (max-width: 1279px) {
    .logo-note, .topbar__links li:first-child { display: none; }
    .topbar__links li:nth-child(2) { margin-left: 0; padding-left: 0; border-left: 0; }
    .logo { margin-right: auto; }
    .site-header__inner { gap: 1.1rem; }
    .nav__link { padding-inline: .8rem; font-size: .86rem; }
    .nav__item--mega .nav__link { padding-right: 1.6rem; }
    .mega--locations .mega__inner { grid-template-columns: minmax(0, 1fr); gap: 1.2rem; }
    .mega--locations .mega__intro { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
    .mega--locations .mega__title { display: none; }
    .process__line { display: none; }
    .process__steps { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 3rem 2rem; }
    .why__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .why__item { min-height: 240px; }
    .svc-row__link { grid-template-columns: 56px minmax(0, 1fr) minmax(0, 1fr) 46px; gap: 1rem 2rem; }
    .site-footer__cols { grid-template-columns: 1fr 1fr; }
    .site-footer__col--contact { grid-column: 1 / -1; }
    .bp-dim { display: none; }
}

/* ---------- ≤ 1099px : mobile navigation ---------- */
@media (max-width: 1099px) {
    :root { --topbar-h: 0px; }
    .topbar { display: none; }
    .header-call__text { display: none; }
    .nav { display: none; }
    .header-wa { display: grid; }
    .menu-toggle { display: inline-flex; box-shadow: 0 10px 22px -12px rgba(7, 16, 38, .7); }
    .site-header__actions { gap: .5rem; }
    .site-header { box-shadow: 0 10px 30px -24px rgba(7, 16, 38, .5); }
    html.menu-open .site-header { box-shadow: none; border-bottom-color: transparent; }
}

/* ---------- ≤ 1023px : tablet ---------- */
@media (max-width: 1023px) {
    :root { --bar-h: 72px; }
    .site-header.is-scrolled { --bar-h: 64px; }
    .svc-nav { top: 64px; }
    .logo__img { height: 46px; }
    .site-header.is-scrolled .logo__img { height: 40px; }

    .section-head, .create__head, .cta-band__inner,
    .intro__grid, .feature__grid, .contact-cta__grid, .detail-intro__grid,
    .creates__layout, .apps__grid, .approach__grid, .materials__grid,
    .svc-block__grid, .project-detail__grid, .site-footer__top {
        grid-template-columns: minmax(0, 1fr);
    }
    .section-head > :last-child:not(:first-child), .create__head > :last-child { justify-self: start; }
    .feature--reverse .feature__media, .svc-block--reverse .svc-block__media { order: 0; }

    .intro__frame { aspect-ratio: 4 / 3.4; }
    .intro__note { right: 16px; bottom: 16px; }
    .stats { grid-template-columns: repeat(2, 1fr); }
    .stat:nth-child(3) { border-left: 0; padding-left: 0; }
    .stat:nth-child(n+3) { margin-top: 2rem; border-top: 1px solid var(--line); }

    .showcase__item--a { grid-column: 1 / -1; grid-row: auto; }
    .showcase__item--a .showcase__frame { min-height: 0; aspect-ratio: 16 / 11; }
    .showcase__item--b { grid-column: 1 / span 6; grid-row: auto; }
    .showcase__item--c { grid-column: 7 / span 6; grid-row: auto; }
    .showcase__text { grid-column: 1 / -1; grid-row: auto; }

    .card-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .feature-full { min-height: 0; }
    .feature-full__card { max-width: 100%; }
    .creates__media { min-height: 0; aspect-ratio: 16 / 10; }
    .creates__layout--cards .creates__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .onsite__grid { grid-template-columns: minmax(0, 1fr); }
    .onsite__media { max-width: 340px; }
    .translate__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .contact-cards { grid-template-columns: 1fr 1fr; }
    .contact-cards > :last-child { grid-column: 1 / -1; min-height: 0; }
    .project-detail__body { position: static; }
    .svc-block__big-num { font-size: clamp(4rem, 14vw, 7rem); }
    .hero__tech--br { display: none; }
    .svc-hover { display: none; }
    .loc-area__grid, .faq__grid { grid-template-columns: minmax(0, 1fr); }
    .fa-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .fa-panel--wide { grid-column: 1 / -1; }
    .fa-panel--wide .fa-list { columns: 3; }
    .fa-list { columns: 2; column-gap: 1rem; }
    .fa-panel:last-child:nth-child(even) { grid-column: 1 / -1; }
    .fa-panel:last-child:nth-child(even) .fa-list { columns: 3; }
    .faq__grid > div:first-child { position: static; }
    .loc-area__map { min-height: 380px; }
}

/* ---------- ≤ 767px : mobile ---------- */
@media (max-width: 767px) {
    body { padding-bottom: calc(66px + env(safe-area-inset-bottom)); }
    .mobile-bar { display: grid; }
    .wa-float { display: none; }
    .site-header__cta { display: none; }

    /* Hero */
    .hero { min-height: max(620px, 100svh); }
    .hero__img, .hero__video { object-position: 50% 50%; }
    .hero__overlay {
        background:
            linear-gradient(0deg, rgba(7,16,38,.95) 0%, rgba(7,16,38,.78) 40%, rgba(7,16,38,.22) 68%, rgba(7,16,38,.5) 100%);
    }
    .hero__blueprint, .hero__tech, .hero__ruler, .page-hero__ruler, .hero__disciplines { display: none; }
    .hero__content { padding-top: calc(var(--header-h) + 120px); padding-bottom: 32px; }
    .hero__eyebrow { font-size: .64rem; letter-spacing: .16em; gap: .75rem; }
    .hero__eyebrow-line { width: 28px; }
    .hero__title { margin: 1.2rem 0 1.25rem; }
    .hero__ctas { gap: .75rem; margin-top: 1.8rem; }
    .hero__ctas .btn { flex: 1 1 100%; }
    .hero__wa { margin: .25rem 0 0; }
    .hero__bottom { padding-block: 1.1rem; }

    .page-hero { min-height: max(520px, 78svh); }
    .page-hero__content { padding-top: calc(var(--header-h) + 72px); padding-bottom: 1.75rem; }
    .page-hero__label { margin-top: 1.6rem; }
    .page-hero__actions .btn { flex: 1 1 100%; }

    /* Layout */
    .section-head { margin-bottom: 40px; }
    .card-grid--3 { grid-template-columns: minmax(0, 1fr); }
    .masonry { columns: 2; column-gap: 12px; }
    .masonry > * { margin-bottom: 16px; }
    .masonry--projects { columns: 1; }
    .masonry--projects .project-card:nth-child(n) .project-card__media { aspect-ratio: 4 / 3; }
    .gallery-card__cap { flex-direction: column; gap: .2rem; }
    .gallery-card__title { text-align: left; font-size: .82rem; }

    .inputs { grid-template-columns: 1fr; }
    .stat dd { font-size: clamp(2.6rem, 12vw, 3.6rem); }

    .create__panel { width: 80vw; }

    .svc-row__link { grid-template-columns: 72px minmax(0, 1fr) 40px; gap: .25rem 1rem; padding: 18px 0; }
    .svc-row__num { display: none; }
    .svc-row__thumb { display: block; grid-row: span 2; width: 72px; height: 72px; overflow: hidden; border-radius: 2px; }
    .svc-row__thumb img { width: 100%; height: 100%; object-fit: cover; }
    .svc-row__title { font-size: 1.18rem; }
    .svc-row__text { grid-column: 2; grid-row: 2; font-size: .84rem; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
    .svc-row__arrow { grid-column: 3; grid-row: 1 / span 2; width: 40px; height: 40px; }

    .showcase__item--b, .showcase__item--c { grid-column: 1 / -1; }
    .spec { grid-template-columns: 1fr; }
    .spec > div { padding: .9rem 0 .9rem; border-bottom: 1px solid var(--line); }

    .process__steps { grid-template-columns: 1fr; gap: 2.25rem; }
    .process__line { display: block; left: 22px; right: auto; top: 22px; bottom: 22px; width: 1px; height: auto; background: repeating-linear-gradient(180deg, var(--line) 0 6px, transparent 6px 12px); }
    .process__line-fill { transform-origin: top; transform: scaleY(0); }
    .process__track.is-in .process__line-fill { transform: scaleY(1); }
    .process__step { padding-left: 72px; }
    .process__node { position: absolute; left: 0; top: -12px; margin: 0; }

    .why__grid { grid-template-columns: 1fr; }
    .why__item { min-height: 0; }
    .why__title { margin-top: 1.5rem; }

    .form__row { grid-template-columns: 1fr; }
    .form__foot .btn { width: 100%; }
    .contact-cards { grid-template-columns: 1fr; }
    .contact-card { min-height: 0; }

    .creates__grid, .translate__grid, .approach__cols, .svc-block__list { grid-template-columns: 1fr; }
    .creates__layout--cards .creates__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .creates__layout--cards .create-item { padding: 10px 10px 20px; }
    .onsite__media { max-width: 300px; }
    .onsite__media::before { inset: 10px -10px -10px 10px; }
    .creates__layout--cards .create-item > :not(.create-item__media) { padding-inline: 4px; }
    .creates__layout--cards .create-item__title { font-size: 1.02rem; }
    .creates__layout--cards .create-item p { font-size: .85rem; }
    .translate__item { min-height: 0; }
    .process__media { max-width: 420px; }
    .glance { grid-template-columns: 1fr; }
    .glance__item + .glance__item { padding-left: 0; border-left: 0; }

    .detail-gallery__grid, .detail-gallery__grid--3, .detail-gallery__grid--4 { grid-template-columns: 1fr 1fr; }
    .detail-gallery__grid--3 > :first-child, .detail-gallery__grid--4 > :first-child { grid-column: 1 / -1; grid-row: auto; }
    .detail-gallery__grid--3 > :first-child .gallery-card__btn, .detail-gallery__grid--4 > :first-child .gallery-card__btn { min-height: 0; }
    .detail-gallery__grid--3 > :first-child .gallery-card__btn img, .detail-gallery__grid--4 > :first-child .gallery-card__btn img { position: static; aspect-ratio: 4 / 3; }
    .detail-gallery__grid--4 > :nth-child(4) { grid-column: auto; }
    .detail-gallery__grid--4 > :nth-child(4) .gallery-card__btn img { aspect-ratio: 4 / 3; }

    .cta-band__actions .btn, .feature__actions .btn { flex: 1 1 100%; }
    .filters { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; margin-inline: calc(var(--gutter) * -1); padding-inline: var(--gutter); }
    .filters::-webkit-scrollbar { display: none; }

    .map-section { height: auto; display: flex; flex-direction: column; }
    .map-section__frame { height: 360px; }
    .map-section__card-wrap { position: static; padding-block: 1.5rem; }
    .map-section__card { max-width: none; }

    .lightbox { padding: 72px 12px 110px; }
    .lightbox__img { max-height: calc(100svh - 240px); }
    .lightbox__prev, .lightbox__next { top: auto; bottom: 24px; margin-top: 0; }
    .lightbox__prev { left: calc(50% - 64px); }
    .lightbox__next { right: calc(50% - 64px); }

    .pager { grid-template-columns: 1fr; }
    .pager__link--next { align-items: flex-start; text-align: left; border-top: 1px solid var(--line); }

    .site-footer__cols { grid-template-columns: 1fr 1fr; gap: 2.5rem 1.5rem; }
    .site-footer__ctas .btn { flex: 1 1 100%; }
    .site-footer__bottom { flex-direction: column; }
    .site-footer__meta { justify-content: space-between; }
    .fa-card { border-radius: 22px; padding: 22px 16px 16px; }
    .fa-head { gap: 1.25rem; }
    .fa-stats { width: 100%; }
    .fa-stats li { flex: 1; padding: .85rem .5rem; }
    .fa-grid { grid-template-columns: minmax(0, 1fr); gap: .75rem; }
    .fa-panel { padding: 1rem .9rem 1rem; }
    .fa-list, .fa-panel--wide .fa-list { columns: auto; display: flex; flex-wrap: wrap; gap: .4rem; }
    .fa-list a { margin: 0; min-height: 36px; padding: .35rem .8rem; gap: .45rem; border-radius: 999px; border: 1px solid rgba(244, 246, 250, .13); background: rgba(244, 246, 250, .03); font-size: .82rem; color: rgba(244, 246, 250, .85); }
    .fa-list__dot { width: 4px; height: 4px; background: var(--accent-2); }
    .fa-list__go { display: none; }
    .fa-strip { padding: 1rem; }
    .fa-strip__actions, .fa-btn { width: 100%; }
    .fa-strip__actions { display: grid; grid-template-columns: 1fr; }
    .loc-links { grid-template-columns: minmax(0, 1fr); }
    .loc-facts > div { grid-template-columns: minmax(0, 1fr); gap: .2rem; }
    .loc-group__head { grid-template-columns: auto 1fr; }
    .loc-group__count { grid-column: 2; padding-top: 0; }
    .loc-grid { grid-template-columns: minmax(0, 1fr); }
    .loc-area__map { min-height: 340px; }
    .loc-area__card { position: relative; left: auto; bottom: auto; max-width: none; margin-top: 260px; border-radius: 0; }
    .hero__crumbs { margin-bottom: .9rem; }
}

/* ---------- ≤ 479px : small phones ---------- */
@media (max-width: 479px) {
    :root { --bar-h: 66px; }
    .site-header.is-scrolled { --bar-h: 60px; }
    .svc-nav { top: 60px; }
    .logo__img { height: 42px; }
    .site-header.is-scrolled .logo__img { height: 37px; }
    .menu-toggle { width: 44px; height: 44px; padding: 0; justify-content: center; }
    .menu-toggle__label { display: none; }
    .header-wa, .header-call__icon { width: 42px; height: 42px; }
    .site-header__actions { gap: .4rem; }
    .site-footer__logo img { height: 46px; }
    .logo__mark { width: 30px; height: 30px; }
    .logo__text { font-size: .96rem; letter-spacing: .18em; }
    .logo__sub { font-size: .52rem; letter-spacing: .12em; }
    .btn { min-height: 52px; padding: 0 1.2rem 0 1.35rem; font-size: .92rem; }
    .hero__bottom .hero__loc { display: none; }
    .hero__video-toggle { width: 38px; padding: 0; justify-content: center; }
    .hero__video-toggle-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
    .stats { grid-template-columns: 1fr 1fr; }
    .stat { padding: 1.5rem 1rem 0; }
    .stat:nth-child(odd) { padding-left: 0; }
    .masonry { columns: 1; }
    .creates__layout--cards .creates__grid { grid-template-columns: 1fr; }
    .creates__layout--cards .create-item { padding: 12px 12px 24px; }
    .inputs__thumb { width: 56px; height: 42px; }
    .masonry .gallery-card:nth-child(n) .gallery-card__btn img { aspect-ratio: 4 / 3; }
    .detail-gallery__grid, .detail-gallery__grid--3, .detail-gallery__grid--4 { grid-template-columns: 1fr; }
    .contact-cta__form { padding: 22px 18px; }
    .feature-full__card { padding: 24px 20px; }
    .chip { font-size: .8rem; padding: .5rem .8rem; }
    .site-footer__cols { grid-template-columns: 1fr; }
    .svc-block__big-num { display: none; }
    .intro__note { display: none; }
}

/* ---------- ≤ 359px ---------- */
@media (max-width: 359px) {
    :root { --gutter: 16px; }
    .logo__sub { display: none; }
    .logo__img { height: 38px; }
    .hero__title { font-size: 2.3rem; }
    .mobile-bar__btn { font-size: .9rem; }
}

/* ---------- Short landscape screens ---------- */
@media (max-height: 560px) and (orientation: landscape) {
    .hero, .page-hero { min-height: 560px; }
    .mobile-menu__link { font-size: 1.4rem; }
}