/* ─────────────────────────────────────────────────────────────
   Beldi — Responsive
   Tablet (≤960px) and Mobile (≤640px) overrides.
   Loaded LAST so it can cascade over portal.css / protocol.css.

   Breakpoint philosophy:
     • Desktop  ≥ 961px  — original 2/3/4-column layouts
     • Tablet   ≤ 960px  — multi-column collapses to 1 or 2
     • Mobile   ≤ 640px  — single column, tighter gutters, smaller type
   ───────────────────────────────────────────────────────────── */


/* ═══════════════ Tablet (≤ 960px) ═══════════════════════════ */
@media (max-width: 960px) {

  :root {
    --gutter:        32px;
    --gutter-tight:  24px;
    --gutter-loose:  56px;
  }

  /* ── Nav ─────────────────────────────────────────────── */
  .site-nav {
    grid-template-columns: 1fr auto;
    gap: 20px;
    padding: 20px var(--gutter);
  }
  .site-nav__tagline { display: none; }
  .site-nav__links {
    order: 3;
    grid-column: 1 / -1;
    justify-content: flex-start;
    gap: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    white-space: nowrap;
  }
  .site-nav__link { font-size: 11.5px; }
  .site-nav__signin { display: none; }
  .site-nav__actions .btn { display: none; }

  /* ── Section heading stacks ─────────────────────────── */
  .section-heading {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 48px;
  }
  .section-heading__title { font-size: 44px; }

  /* ── Portal · Hero ──────────────────────────────────── */
  .hero {
    grid-template-columns: 1fr;
    gap: 56px;
    padding: 56px var(--gutter) 72px;
  }
  .hero__title    { font-size: 56px; letter-spacing: -1.2px; margin: 24px 0; }
  .hero__lede     { font-size: 16px; margin-bottom: 36px; }
  .hero__metrics  { margin-top: 56px; gap: 24px; }
  .metric__value  { font-size: 36px; }
  .hero__visual   { height: 540px; }
  .hero__callout  { right: -16px; top: 32px; padding: 16px 18px; max-width: 160px; }
  .hero__callout-num { font-size: 36px; }
  .hero__tag      { left: -16px; bottom: 28px; max-width: 200px; padding: 16px 18px; }
  .hero__tag-title { font-size: 19px; }

  /* ── Portal · Rituals ───────────────────────────────── */
  .ritual-kits  { padding: 80px var(--gutter); }
  .ritual-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .ritual-card__name { font-size: 26px; }

  /* ── Portal · Catalog ───────────────────────────────── */
  .catalog { padding: 80px var(--gutter); }
  .catalog-item {
    grid-template-columns: 220px 1fr;
    grid-template-areas:
      "media   info"
      "media   options"
      "action  action";
    gap: 32px 28px;
    padding: 32px 0;
  }
  .catalog-item__media   { grid-area: media; }
  .catalog-item > div:nth-child(2) { grid-area: info; }
  .catalog-item > div:nth-child(3) { grid-area: options; }
  .catalog-item__action  { grid-area: action; padding-top: 0; }
  .catalog-item__title   { font-size: 28px; }

  /* ── Portal · Trust ─────────────────────────────────── */
  .trust { padding: 72px var(--gutter); }
  .trust__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .trust-card__tag { font-size: 26px; }

  /* ── Portal · Lead ──────────────────────────────────── */
  .lead { padding: 80px var(--gutter) 56px; }
  .lead__grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .lead__title { font-size: 48px; }
  .lead__form-card { padding: 36px 32px 32px; }

  /* ── Protocol · Kit switcher ────────────────────────── */
  .kit-switcher {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 16px var(--gutter);
  }
  .kit-switcher__nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-inline: calc(var(--gutter) * -1);
    padding-inline: var(--gutter);
  }
  .kit-switcher__tab { padding: 12px 20px; flex-shrink: 0; }

  /* ── Protocol · Hero ────────────────────────────────── */
  .protocol-hero {
    grid-template-columns: 1fr;
    gap: 56px;
    padding: 56px var(--gutter) 72px;
  }
  .protocol-hero__title { font-size: 56px; letter-spacing: -1.2px; }
  .protocol-hero__sub   { font-size: 15px; margin-bottom: 40px; }
  .telemetry-grid       { gap: 28px 32px; }
  .telemetry-cell__value          { font-size: 22px; }
  .telemetry-cell--accent .telemetry-cell__value { font-size: 26px; }
  .protocol-hero__visual { height: 540px; }
  .protocol-hero__callout { right: -16px; top: 28px; max-width: 160px; padding: 16px 18px; }
  .protocol-hero__callout-value { font-size: 34px; }
  .traceability-card { left: -16px; bottom: 28px; padding: 16px 18px; max-width: 260px; }

  /* ── Protocol · Crate Inventory ─────────────────────── */
  .crate-inventory { padding: 80px var(--gutter); }
  .crate-inventory__grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .inventory-item--lg,
  .inventory-item--sm {
    grid-column: span 1;
    grid-template-columns: 100px 1fr;
    min-height: auto;
    padding: 24px;
  }
  .inventory-item__title { font-size: 22px; }
  .inventory-item--sm .inventory-item__title { font-size: 20px; }

  /* ── Protocol · Timeline ────────────────────────────── */
  .protocol-timeline { padding: 80px var(--gutter); }
  .timeline-rail {
    grid-template-columns: 1fr 1fr;
    gap: 48px 32px;
  }
  .timeline-rail::before { display: none; }
  .timeline-step,
  .timeline-step + .timeline-step {
    padding: 0;
    border-left: 0;
  }
  .timeline-step + .timeline-step .timeline-step__node { margin-left: 0; }
  .timeline-step__title { font-size: 26px; }

  /* ── Protocol · Training Banner ─────────────────────── */
  .training-banner {
    grid-template-columns: 1fr;
    gap: 48px;
    padding: 64px var(--gutter);
  }
  .training-banner__title { font-size: 38px; }
  .training-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  /* ── Protocol · Procurement ─────────────────────────── */
  .procurement { padding: 80px var(--gutter); }
  .procurement__grid {
    grid-template-columns: 1fr;
    gap: 56px;
  }
  .procurement__title { font-size: 44px; }

  /* ── Footer ─────────────────────────────────────────── */
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 28px var(--gutter);
  }
  .site-footer__legal {
    flex-wrap: wrap;
    gap: 14px 24px;
  }
}


/* ═══════════════ Mobile (≤ 640px) ═══════════════════════════ */
@media (max-width: 640px) {

  :root {
    --gutter:        20px;
    --gutter-tight:  16px;
    --gutter-loose:  32px;
  }

  body { font-size: 14.5px; }

  /* ── Nav ─────────────────────────────────────────────── */
  .site-nav { padding: 16px var(--gutter); }
  .beldi-mark { font-size: 22px; letter-spacing: 6px; }
  .site-nav__worksheet { gap: 6px; font-size: 10.5px; }
  .site-nav__worksheet-count { width: 20px; height: 20px; font-size: 12px; }
  .site-nav__links { gap: 18px; padding-top: 12px; }
  .site-nav__link  { font-size: 11px; letter-spacing: 1.4px; }

  /* ── Section labels ─────────────────────────────────── */
  .section-label { gap: 12px; font-size: 10.5px; letter-spacing: 2px; }
  .section-heading__title { font-size: 36px; letter-spacing: -0.8px; }

  /* ── Buttons ────────────────────────────────────────── */
  .btn { padding: 14px 22px; font-size: 11px; letter-spacing: 1.6px; }
  .btn--ghost { padding: 14px 4px; }

  /* ── Portal · Hero ──────────────────────────────────── */
  .hero { padding: 40px var(--gutter) 56px; gap: 40px; }
  .hero__title { font-size: 44px; letter-spacing: -1px; margin: 20px 0; }
  .hero__lede  { font-size: 15px; margin-bottom: 28px; }
  .hero__ctas  { gap: 20px; flex-direction: column; align-items: stretch; }
  .hero__ctas .btn { width: 100%; }
  .hero__ctas .btn--ghost { text-align: center; justify-content: center; }
  .hero__metrics {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-top: 40px;
    padding-top: 28px;
  }
  .hero__metrics > div {
    padding-bottom: 24px;
    border-bottom: 1px solid var(--line);
  }
  .hero__metrics > div:last-child { border-bottom: 0; padding-bottom: 0; }
  .metric__value { font-size: 40px; }

  .hero__visual  { height: 420px; }
  .hero__callout { right: -8px; top: 20px; max-width: 130px; padding: 12px 14px; }
  .hero__callout-num { font-size: 28px; }
  .hero__callout-label { font-size: 9px; }
  .hero__tag {
    left: -8px;
    bottom: 20px;
    max-width: 170px;
    padding: 12px 14px;
  }
  .hero__tag-title { font-size: 16px; }

  /* ── Portal · Rituals ───────────────────────────────── */
  .ritual-kits { padding: 64px var(--gutter); }
  .ritual-grid { grid-template-columns: 1fr; gap: 20px; }
  .ritual-card__body  { padding: 22px; }
  .ritual-card__name  { font-size: 24px; }
  .ritual-card__stat-value--accent { font-size: 20px; }

  /* ── Portal · Catalog ───────────────────────────────── */
  .catalog { padding: 64px var(--gutter); }
  .catalog-item {
    grid-template-columns: 1fr;
    grid-template-areas:
      "media"
      "info"
      "options"
      "action";
    gap: 24px;
    padding: 28px 0;
  }
  .catalog-item__media {
    aspect-ratio: 3 / 2;
    max-width: 280px;
  }
  .catalog-item__title { font-size: 24px; }
  .catalog-item__note  { font-size: 13.5px; }
  .size-chip           { padding: 10px 14px; font-size: 12px; }

  /* ── Portal · Trust ─────────────────────────────────── */
  .trust { padding: 56px var(--gutter); }
  .trust__grid { margin-top: 40px; gap: 36px; }
  .trust-card__tag { font-size: 22px; }
  .trust-card__stat { font-size: 22px; }

  /* ── Portal · Lead form ─────────────────────────────── */
  .lead { padding: 64px var(--gutter) 40px; }
  .lead__title { font-size: 36px; letter-spacing: -0.8px; }
  .lead__intro { font-size: 14.5px; }
  .lead__contact {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .lead__form-card { padding: 28px 24px; }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .field__input,
  .field__select { font-size: 18px; }
  .form-foot {
    flex-direction: column;
    align-items: stretch;
    gap: 20px;
  }
  .form-foot .btn { width: 100%; }
  .form-success__title { font-size: 36px; }

  /* ── Toast ──────────────────────────────────────────── */
  .toast {
    left: 16px;
    right: 16px;
    transform: none;
    bottom: 20px;
    padding: 14px 18px;
    font-size: 11px;
  }

  /* ── Worksheet drawer ───────────────────────────────── */
  .ws-drawer__head { padding: 24px 22px 20px; }
  .ws-drawer__body { padding: 4px 22px 20px; }
  .ws-drawer__foot { padding: 20px 22px 24px; }
  .ws-drawer__title { font-size: 26px; }
  .ws-line { gap: 14px; }
  .ws-line__name { font-size: 18px; }
  @keyframes beldi-toast {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
  }

  /* ── Protocol · Kit switcher ────────────────────────── */
  .kit-switcher__label { gap: 10px; }
  .kit-switcher__rule  { width: 16px; }
  .kit-switcher__tagline { font-size: 13px; }
  .kit-switcher__tab { padding: 12px 16px; gap: 10px; }
  .kit-switcher__tab-name { font-size: 11px; letter-spacing: 1.4px; }
  .kit-switcher__tab-indicator { left: 16px; right: 16px; }

  /* ── Protocol · Hero ────────────────────────────────── */
  .protocol-hero { padding: 40px var(--gutter) 56px; gap: 40px; }
  .protocol-hero__title { font-size: 42px; letter-spacing: -1px; margin: 20px 0; }
  .protocol-hero__sub   { font-size: 14.5px; margin-bottom: 32px; }
  .telemetry-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .telemetry-cell__value          { font-size: 20px; }
  .telemetry-cell--accent .telemetry-cell__value { font-size: 24px; }
  .protocol-hero__visual { height: 420px; }
  .protocol-hero__callout {
    right: -8px;
    top: 20px;
    max-width: 130px;
    padding: 12px 14px;
  }
  .protocol-hero__callout-value { font-size: 30px; }
  .traceability-card {
    left: -8px;
    bottom: 20px;
    max-width: 220px;
    padding: 14px 16px 16px;
  }
  .traceability-card__title { font-size: 16px; }
  .traceability-card__grid { gap: 8px; }

  /* ── Protocol · Inventory ───────────────────────────── */
  .crate-inventory { padding: 56px var(--gutter); }
  .crate-inventory__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .inventory-item--lg,
  .inventory-item--sm {
    grid-template-columns: 80px 1fr;
    gap: 20px;
    padding: 20px;
  }
  .inventory-item__media { padding: 14px; }
  .inventory-item__head {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .inventory-item__title,
  .inventory-item--sm .inventory-item__title { font-size: 20px; }
  .inventory-item__foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  /* Sourcing-tip — tap to reveal vs. hover */
  .sourcing-tip {
    position: relative;
    left: 0;
    right: 0;
    bottom: 0;
    margin-top: 16px;
    /* Stays visible on mobile (no hover) — show inline on focus only */
    opacity: 0;
    transform: none;
    max-height: 0;
    padding-block: 0;
    transition: opacity var(--t-base) var(--ease), max-height var(--t-base) var(--ease);
  }
  .inventory-item:focus-within .sourcing-tip {
    opacity: 1;
    max-height: 240px;
    padding: 16px 18px;
  }

  /* ── Protocol · Timeline ────────────────────────────── */
  .protocol-timeline { padding: 56px var(--gutter); }
  .timeline-rail {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .timeline-step__title { font-size: 24px; }
  .timeline-step__body  { font-size: 13.5px; }

  /* ── Protocol · Training ────────────────────────────── */
  .training-banner { padding: 56px var(--gutter); gap: 40px; }
  .training-banner__title { font-size: 32px; letter-spacing: -0.8px; }
  .training-grid { gap: 28px; }
  .training-card__body { font-size: 13.5px; }

  /* ── Protocol · Procurement ─────────────────────────── */
  .procurement { padding: 64px var(--gutter); }
  .procurement__title { font-size: 36px; letter-spacing: -0.8px; }
  .procurement__fact {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .action-card { padding: 28px 24px; }
  .action-card__heading-name { font-size: 26px; }
  .tier { padding: 14px 14px; }
  .tier__label { font-size: 18px; }

  /* ── Index page ─────────────────────────────────────── */
  .index-wrap   { padding: 56px var(--gutter); }
  .index__head  { grid-template-columns: 1fr; gap: 24px; }
  .index__title { font-size: 52px; letter-spacing: -1.2px; }
  .index__cards { grid-template-columns: 1fr; gap: 20px; }
  .index-card   { padding: 28px 24px; }
  .index-card__title { font-size: 30px; }
  .index__foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}


/* ═══════════════ Narrow phones (≤ 380px) ════════════════════ */
@media (max-width: 380px) {
  .hero__title          { font-size: 38px; }
  .section-heading__title { font-size: 30px; }
  .protocol-hero__title { font-size: 36px; }
  .lead__title          { font-size: 30px; }
  .procurement__title   { font-size: 30px; }
  .index__title         { font-size: 42px; }

  /* Drop floating callouts on the narrowest screens —
     they crowd the photo and the data is shown elsewhere. */
  .hero__callout,
  .protocol-hero__callout { display: none; }
}