/* ==========================================================================
   Adverixa — responsive layer
   Desktop-first refinements, then a separately considered mobile layout.
   ========================================================================== */

@media (min-width: 1920px) {
  :root { --wrap: 1480px; }
  body { font-size: 18px; }
}

@media (max-width: 1280px) {
  :root { --gutter: 32px; }
  .hdr-actions { gap: 22px; }
  .hdr-links { gap: 22px; }
  .hdr-svc ul a { padding: 0 13px; }
  .hdr-svc ul a::after { left: 13px; right: 13px; }
  .cap-strip a { padding: 26px 18px 28px; column-gap: 12px; }
  .cap-strip svg { width: 28px; height: 28px; }
  .cap-strip strong { font-size: 15px; }
  .matrix__row { grid-template-columns: 240px 1fr; }
  .footer-top { grid-template-columns: 1.2fr 1fr 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 30px; }
  .footer-brand p { max-width: none; margin: 0; }
  .footer-brand img { margin-bottom: 0; }
  .workflow { grid-template-columns: repeat(3, 1fr); row-gap: 20px; }
  .workflow li:nth-child(3) { border-right: 0; margin-right: 0; }
}

@media (max-width: 1100px) {
  .hdr-links { display: none; }
  .svc-panel .wrap { grid-template-columns: 1fr; gap: 28px; }
  .svc-grid { grid-template-columns: repeat(6, 1fr); }
  .svc--feature { grid-column: 1 / -1; grid-row: auto; }
  .svc--side, .svc--wide, .svc { grid-column: span 3; }
  .svc--feature { grid-column: 1 / -1; }
  .process { grid-template-columns: repeat(2, 1fr); row-gap: 48px; }
  .process::before { display: none; }
  .matrix__items { grid-template-columns: repeat(2, 1fr); }
  .matrix__items li:nth-child(n+3) { border-top: 1px solid var(--border); }
  .matrix__items li { padding: 20px 22px; }
  .post-grid { grid-template-columns: repeat(2, 1fr); }
  .post-grid .post:nth-child(3) { display: none; }
  .post-grid.ins-list .post:nth-child(3), .post-grid--all .post:nth-child(3) { display: flex; }
  .ins-list .post[hidden] { display: none !important; }
  .topic-layout, .longform { grid-template-columns: 240px 1fr; }
  .cr-list { grid-template-columns: 1fr 1fr; }
  .cr-item:not(:nth-child(3n+1)) { padding-left: 0; border-left: 0; }
  .cr-item:nth-child(even) { padding-left: 32px; border-left: 1px solid var(--border); }
  .cr-item { padding-right: 32px; }
  .cr-item:nth-child(even) { padding-right: 0; }
  .legal { grid-template-columns: 220px minmax(0, 1fr); }
  .article { grid-template-columns: 200px minmax(0, 1fr); }
}

/* ---------- Switch to mobile header ---------- */
@media (max-width: 960px) {
  :root { --gutter: 24px; --section: 72px; }
  html { scroll-padding-top: 70px; }
  .hdr-top, .hdr-svc, .hdr-ctx, .svc-panel { display: none; }
  .hdr-mobile {
    display: flex; align-items: center; justify-content: space-between;
    height: 72px; padding: 0 var(--gutter); background: var(--white); border-bottom: 1px solid var(--border);
    position: sticky; top: 0; z-index: 80;
  }
  .site-header { position: sticky; top: 0; z-index: 80; }
  .hdr-mobile .brand img { height: 38px; }
  .hdr-mobile__actions { display: flex; gap: 4px; }
  .menu-btn { display: inline-flex; align-items: center; gap: 10px; height: 48px; padding: 0 14px; background: var(--navy); color: var(--white); border: 0; font-family: var(--f-head); font-weight: 800; font-size: 13px; letter-spacing: .14em; text-transform: uppercase; cursor: pointer; }
  .menu-btn svg { width: 20px; height: 20px; }
  .mobile-crumbs { display: block; background: var(--navy); color: #C9DBEC; font-size: 13px; padding: 9px var(--gutter); }
  .mobile-crumbs .crumbs { gap: 8px; }
  .mobile-crumbs .crumbs li { gap: 8px; }
  .section-nav { top: 72px; }
  .section-nav__cta { display: none; }
  .section-nav a { height: 52px; padding: 0 16px; font-size: 14px; }
  .topic-index, .legal-toc, .article aside { top: 90px; }
  .intro h2, .why__head h2 { top: 140px; }

  .hero__grid, .page-hero__grid { grid-template-columns: 1fr; }
  .page-hero__grid--rev .page-hero__media { order: 0; }
  .hero__copy { order: -1; }
  .hero__media, .page-hero__media { padding-left: 16px; }
  .hero__media::before, .hero__media::after, .page-hero__media::before, .page-hero__media::after { width: 5px; }
  .hero__media .frame { aspect-ratio: 4 / 3; }

  .cap-strip ul { grid-template-columns: repeat(5, minmax(220px, 1fr)); overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: thin; }
  .cap-strip li { scroll-snap-align: start; }

  .section-head, .intro, .why, .about-grid, .text-hero__grid, .contact-grid { grid-template-columns: minmax(0, 1fr); gap: 28px; }
  .hero__grid, .page-hero__grid, .feature-split, .panel-hero, .location, .cta__grid, .topic-layout, .longform, .legal, .article, .dir__grid, .ins-feature, .resp { grid-template-columns: minmax(0, 1fr) !important; }
  .intro__facts { grid-template-columns: 1fr 1fr; }
  .intro__facts dd { overflow-wrap: anywhere; }
  .intro h2, .why__head h2 { position: static; }
  .feature-split, .panel-hero { grid-template-columns: 1fr; }
  .feature-split__img, .panel-hero__img { min-height: 0; aspect-ratio: 4 / 3; }
  .panel-hero__copy { padding: 56px var(--gutter); }
  .location { grid-template-columns: 1fr; }
  .location__img { min-height: 0; aspect-ratio: 4 / 3; }
  .cta__grid { grid-template-columns: 1fr; gap: 28px; }
  .break__img { aspect-ratio: 4 / 3; }
  .break__wrap { height: auto; }
  .break__panel { position: relative; left: auto; bottom: auto; width: 100%; padding: 40px var(--gutter) 44px; border-top: 0; }
  .footer-top { grid-template-columns: 1fr 1fr; padding-top: 60px; }
  .footer-brand { flex-direction: column; align-items: flex-start; }
  .footer-contact { grid-column: 1 / -1; }

  .topic-layout, .longform, .legal, .article { grid-template-columns: 1fr; }
  .topic-index, .legal-toc, .article aside { position: static; }
  .dir__grid { grid-template-columns: 1fr; gap: 24px; }
  .dir__head img { max-height: 360px; }
  .svc-strip ul { grid-template-columns: repeat(5, minmax(170px, 1fr)); overflow-x: auto; }
  .ins-feature { grid-template-columns: 1fr; }
  .ins-feature__img { min-height: 0; aspect-ratio: 16 / 10; }
  .ins-feature__body { border-left: 0; border-top: 6px solid var(--blue); }
  .resp { grid-template-columns: 1fr; gap: 20px; }
  .mosaic .m1, .mosaic .m2 { grid-column: 1 / -1; aspect-ratio: 16 / 10; height: auto; }
  .img-band { grid-template-columns: 1fr; }
  .img-band figure:last-child { display: none; }
  .cap-links a { grid-template-columns: 50px 1fr 30px; }
  .cap-links span.d { grid-column: 2 / 3; grid-row: 2; }
  .cap-links .arr { grid-row: 1 / 3; grid-column: 3; }
  .cc-banner .wrap { grid-template-columns: 1fr; gap: 18px; }
}

@media (min-width: 961px) {
  .mobile-crumbs, .hdr-mobile, .mobile-menu { display: none !important; }
}

@media (max-width: 720px) {
  :root { --gutter: 20px; --section: 64px; }
  body { font-size: 17px; }
  h1 { font-size: clamp(40px, 11vw, 56px); }
  h2 { font-size: clamp(32px, 8.4vw, 42px); }
  .btn { width: 100%; }
  .btn-row { flex-direction: column; align-items: stretch; }
  .hero { padding-top: 36px; }
  .hero__copy h1 { font-size: clamp(42px, 12vw, 58px); }
  .hero__cap { flex-direction: column; gap: 2px; }

  .cap-strip ul { grid-template-columns: 1fr 1fr; overflow: visible; }
  .cap-strip li { border-left: 0; border-bottom: 1px solid #C6D6E4; }
  .cap-strip li:nth-child(odd) { border-right: 1px solid #C6D6E4; }
  .cap-strip li:last-child { grid-column: 1 / -1; border-right: 0; border-bottom: 0; }
  .cap-strip a { grid-template-columns: 1fr; padding: 22px 16px; row-gap: 2px; }
  .cap-strip svg { grid-row: auto; margin-bottom: 8px; }

  .svc-grid { grid-template-columns: 1fr; }
  .svc, .svc--side, .svc--wide, .svc--feature { grid-column: 1 / -1; }
  .svc { padding: 30px 24px; }
  .svc--feature { padding: 0; }
  .svc--feature .svc__body { padding: 28px 24px 32px; }
  .svc__top { margin-bottom: 24px; }
  .svc__n { font-size: 44px; }

  .tick-list { grid-template-columns: 1fr; }
  .tick-list li:nth-child(odd) { margin-right: 0; }
  .feature-split__panel { padding: 56px var(--gutter); }

  .process { grid-template-columns: 1fr; row-gap: 0; border-top: 1px solid var(--border); }
  .process li { display: grid; grid-template-columns: 76px 1fr; padding: 26px 0; border-bottom: 1px solid var(--border); }
  .process .num { font-size: 48px; height: auto; grid-row: span 3; }
  .process .pip { display: none; }

  .matrix__row { grid-template-columns: 1fr; border-left-width: 5px; }
  .matrix__head { padding: 22px 18px 6px; }
  .matrix__items { grid-template-columns: 1fr 1fr; }
  .matrix__items li { border-left: 0; border-top: 0 !important; padding: 8px 18px; font-size: 15.5px; }
  .matrix__items { padding-bottom: 16px; }

  .stack li { grid-template-columns: 56px 1fr; gap: 12px; padding: 24px 0; }
  .stack .num { font-size: 22px; }
  .stack p { font-size: 17px; }

  .post-grid { grid-template-columns: 1fr; }
  .post-grid .post:nth-child(3) { display: flex; }
  .post__body { padding: 24px 22px 28px; }

  .location dl, .intro__facts { grid-template-columns: 1fr; }
  .location dd, .contact-list dd { overflow-wrap: anywhere; }
  .location__copy { padding: 36px 22px; }
  .cta p { font-size: 18px; }
  .cta__mail { font-size: 18px; word-break: break-all; }

  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px 20px; }
  .footer-bottom { flex-direction: column; }

  .text-hero__grid { gap: 20px; }
  .topbar .wrap { flex-direction: column; align-items: flex-start; justify-content: center; padding-top: 16px; padding-bottom: 16px; gap: 4px; }
  .dir__cols { grid-template-columns: 1fr; }
  .dir__cols > div, .dir__cols > div:nth-child(2) { padding: 22px 0 6px; border-left: 0; }
  .chip-list { grid-template-columns: 1fr 1fr; }
  .topic { grid-template-columns: 1fr; gap: 6px; }
  .topic ul { grid-template-columns: 1fr; }
  .topic .num { font-size: 30px; }
  .cr-list { grid-template-columns: 1fr; }
  .cr-item, .cr-item:nth-child(even) { padding: 30px 0; border-left: 0; }
  .dg-grid { grid-template-columns: 1fr; }
  .dg { padding: 30px 22px; }
  .principles { grid-template-columns: 1fr; }
  .principles > div, .principles > div:nth-child(even) { padding: 26px 0; border-left: 0; }
  .workflow { grid-template-columns: 1fr; }
  .workflow li { border-right: 0; margin-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); padding: 24px 0; }
  .cap-links strong { font-size: 22px; }
  .resp ul { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form { padding: 26px 20px; }
  .search-results a { grid-template-columns: 1fr; gap: 4px; }
  .legal-body table { font-size: 14.5px; }
  .article-hero figure { aspect-ratio: 4 / 3; }
  .article-body p, .article-body li { font-size: 17.5px; }
  .cc-banner .wrap { padding-top: 20px; padding-bottom: 20px; }
  .cc-banner p { font-size: 14.5px; }
  .cc-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .cc-actions .btn--blue { grid-column: 1 / -1; order: -1; }
  .cc-modal__inner { padding: 26px 20px 22px; }
  .cc-modal__foot .btn { width: 100%; }
  .cc-banner .btn { width: 100%; }
}

@media (max-width: 380px) {
  :root { --gutter: 16px; }
  .hdr-mobile .brand img { height: 32px; }
  .menu-btn span { display: none; }
  .menu-btn { padding: 0 12px; }
  .footer-top { grid-template-columns: 1fr; }
  .svc__n { font-size: 38px; }
  .mobile-menu li a { font-size: 24px; }
  .cc-actions { grid-template-columns: 1fr; }
}

@media (max-width: 340px) {
  .cap-strip ul, .matrix__items, .chip-list { grid-template-columns: 1fr; }
  .cap-strip li:nth-child(odd) { border-right: 0; }
}

@media print {
  .site-header, .section-nav, .cc-banner, .cc-modal, .site-footer, .mobile-menu, .search-dialog { display: none !important; }
  .reveal { opacity: 1; transform: none; }
}