/* Site-wide responsive — mobile, tablet, foldable outer screens */

html {
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: clip;
  padding-left: env(safe-area-inset-left, 0);
  padding-right: env(safe-area-inset-right, 0);
}

img,
svg,
video,
iframe {
  max-width: 100%;
}

/* Prevent grid/flex blowout on narrow viewports */
.hub-cards,
.hub-ladder-inner,
.site-footer-grid,
.domains-wrap,
.pyramid-grid,
.plumb-grid,
.tier-grid,
.ladder,
.teaser-grid,
.result-grid,
.actions {
  min-width: 0;
}

/* Shared horizontal padding + safe areas */
.hwrap,
.hub-wrap,
.wrap {
  padding-left: max(clamp(16px, 4vw, 32px), env(safe-area-inset-left, 0));
  padding-right: max(clamp(16px, 4vw, 32px), env(safe-area-inset-right, 0));
}

.nav {
  padding-left: max(clamp(16px, 4vw, 24px), env(safe-area-inset-left, 0));
  padding-right: max(clamp(16px, 4vw, 24px), env(safe-area-inset-right, 0));
}

/* Touch-friendly targets */
.btn,
.opt,
.hub-card,
.hub-step,
.stack-links a,
.site-footer-nav a,
.site-footer-social a {
  min-height: 44px;
}

.btn.sm {
  min-height: 40px;
}

.stack-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---- Stack nav (framework sub-pages) ---- */
@media (max-width: 720px) {
  .stack-nav .nav-inner {
    gap: 12px;
  }

  .stack-links {
    order: 3;
    width: 100%;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
  }

  .stack-links a {
    padding: 10px 8px;
    font-size: 12px;
    text-align: center;
  }

  .stack-nav .btn.sm {
    margin-left: auto;
    flex-shrink: 0;
  }
}

/* Folded phone outer display (~280–360px) */
@media (max-width: 360px) {
  .nav-inner {
    padding: 10px 12px;
    gap: 10px;
  }

  .hero h1,
  .intro h1 {
    font-size: clamp(32px, 10vw, 44px) !important;
    line-height: 1.08 !important;
  }

  .section-head h2,
  .close h2,
  .hub-stack-head h2,
  .hub-close h2 {
    font-size: clamp(26px, 7vw, 34px) !important;
    line-height: 1.12 !important;
  }

  .section,
  .hero,
  .hub-hero,
  .close,
  .hub-stack,
  .hub-ladder,
  .hub-close {
    padding-top: clamp(40px, 10vw, 64px) !important;
    padding-bottom: clamp(40px, 10vw, 64px) !important;
  }

  .tier[data-level] {
    width: 100% !important;
    padding: 16px 14px;
  }

  .tier .t-q {
    display: none;
  }

  .ladder {
    grid-template-columns: 1fr !important;
  }

  .engage {
    grid-template-columns: 1fr !important;
  }

  .d-item {
    grid-template-columns: 36px 1fr;
    padding: 14px 16px;
  }

  .d-item .d-ico {
    display: none;
  }
}

@media (max-width: 320px) {
  .stack-links a {
    font-size: 11px;
    padding: 8px 4px;
  }

  .btn {
    padding: 12px 16px;
    font-size: 14px;
  }
}

/* ---- Assessment flows ---- */
@media (max-width: 520px) {
  .bar {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
  }

  .bar .bv {
    text-align: left;
  }

  .q h2 {
    font-size: clamp(22px, 6vw, 26px) !important;
    line-height: 1.2 !important;
    max-width: none;
  }

  .progress {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .progress .steps {
    max-width: none;
  }

  .opt {
    padding: 16px;
    font-size: 15px;
  }
}

/* ---- Foldable dual-pane / segmented viewports ---- */
@supports (horizontal-viewport-segments: 2) {
  @media (horizontal-viewport-segments: 2) {
    .site-footer-grid,
    .hub-ladder-inner,
    .domains-wrap,
    .pyramid-grid,
    .pipeline-wrap {
      grid-template-columns: 1fr;
    }

    .hub-cards {
      grid-template-columns: 1fr;
    }
  }
}

/* Unfolded narrow tablet band */
@media (min-width: 640px) and (max-width: 900px) {
  .hub-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .hub-cards .hub-card:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    justify-self: center;
  }
}

@media (max-width: 639px) {
  .hub-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .ladder {
    grid-template-columns: 1fr !important;
  }

  .steps-row {
    grid-template-columns: 1fr !important;
  }
}

/* Sub-site section spacing */
@media (max-width: 640px) {
  .hwrap {
    padding-left: clamp(16px, 4vw, 24px);
    padding-right: clamp(16px, 4vw, 24px);
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 32px;
  }

  .section-head .lede {
    max-width: none;
  }

  .cta-row {
    width: 100%;
  }

  .cta-row .btn {
    flex: 1 1 auto;
    min-width: min(100%, 200px);
  }
}