/* ════════════════════════════════════════════════════════════════════
   Variation A — RESPONSIVE LAYER  (test build)
   Additive only. Loaded LAST, after styles.css + variation-a.css +
   variation-b.css. Contains nothing but @media overrides so the desktop
   design is byte-for-byte unchanged above the first breakpoint.
   Breakpoints:  ≤1024px (tablet)   ≤760px (phone)   ≤460px (small phone)
═══════════════════════════════════════════════════════════════════════ */

/* Allow grid/flex children to shrink instead of forcing overflow. */
.variation-a .va-hero-grid > *,
.variation-a .va-how-grid  > *,
.variation-a .va-q,
.variation-a .va-feat,
.variation-a .va-buyer { min-width: 0; }
.variation-a img, .variation-a svg { max-width: 100%; }

/* ─────────────────────  Mobile menu (hamburger)  ─────────────────────
   The burger + slide-down panel are defined here so they live entirely in
   the responsive layer. Hidden by default; only the ≤760px block reveals. */
.variation-a .nav-burger { display: none; }
.variation-a .nav-mobile-panel { display: none; }

/* ─────────────────────────────  ≤ 1024px  ───────────────────────────── */
@media (max-width: 1024px) {
  .lp .container { padding: 0 32px; }

  /* Hero: stack the two columns, diagram drops below the copy. */
  .variation-a .va-hero { padding: 72px 0 88px; }
  .variation-a .va-hero-grid {
    grid-template-columns: 1fr;
    gap: 52px;
  }
  .variation-a .va-h1 { font-size: clamp(44px, 6.4vw, 58px); letter-spacing: -1.6px; }
  .variation-a .va-sub { font-size: 17px; }

  /* How-it-works: stack steps above the code sample. */
  .variation-a .va-how-grid { grid-template-columns: 1fr; gap: 48px; }

  /* 4-up → 2-up; 3-up feature/buyer → 2-up. */
  .variation-a .va-q-grid     { grid-template-columns: repeat(2, 1fr); }
  .variation-a .va-feat-grid  { grid-template-columns: repeat(2, 1fr); }
  .variation-a .va-buyer-grid { grid-template-columns: repeat(2, 1fr); }

  .variation-a .va-h2 { font-size: 40px; letter-spacing: -1.2px; }
}

/* ─────────────────────────────  ≤ 760px  ────────────────────────────── */
@media (max-width: 760px) {
  .lp .container { padding: 0 22px; }
  .lp section { padding: 64px 0; }

  /* Nav: swap the inline links + button pair for a hamburger that opens
     a full slide-down panel. */
  .variation-a .nav.dark .nav-links { display: none; }
  .variation-a .nav.dark .nav-cta   { display: none; }
  .variation-a .nav-burger {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    margin-left: auto;
    width: 44px; height: 44px;
    padding: 0;
    background: transparent;
    border: 1px solid rgba(255,255,255,0.18);
    border-radius: 8px;
    cursor: pointer;
    flex-shrink: 0;
  }
  .variation-a .nav-burger span {
    display: block;
    width: 18px; height: 2px;
    margin: 0 auto;
    background: #fff;
    border-radius: 2px;
    transition: transform .22s ease, opacity .18s ease;
  }
  .variation-a .nav[data-menu-open="true"] .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .variation-a .nav[data-menu-open="true"] .nav-burger span:nth-child(2) { opacity: 0; }
  .variation-a .nav[data-menu-open="true"] .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Slide-down panel sits under the bar, matching the dark nav surface. */
  .variation-a .nav-mobile-panel {
    display: flex;
    flex-direction: column;
    padding: 8px 22px 22px;
    background: var(--navy);
    border-top: 1px solid rgba(255,255,255,0.08);
  }
  .variation-a .nav.dark[data-nav-style="sticky"] .nav-mobile-panel {
    background: rgba(10, 43, 31, 0.96);
    backdrop-filter: saturate(140%) blur(12px);
    -webkit-backdrop-filter: saturate(140%) blur(12px);
  }
  .variation-a .nav-mobile-panel[hidden] { display: none; }
  .variation-a .nav-mobile-panel a:not(.btn) {
    padding: 14px 4px;
    font-size: 16px;
    font-weight: 500;
    color: rgba(255,255,255,0.82);
    border-bottom: 1px solid rgba(255,255,255,0.07);
  }
  .variation-a .nav-mobile-panel a:not(.btn):active { color: #fff; }
  .variation-a .nav-mobile-cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 18px;
  }
  .variation-a .nav-mobile-cta .btn { width: 100%; justify-content: center; padding: 13px 22px; }
  /* The "minimal" nav tweak hides links on desktop — keep the burger usable. */
  .variation-a .nav.dark[data-nav-style="minimal"] { height: auto; }

  /* Type scales down so headlines stop overflowing. */
  .variation-a .va-h1 {
    font-size: clamp(34px, 9vw, 46px);
    letter-spacing: -1px;
    line-height: 1.04;
  }
  .variation-a .va-h2 { font-size: clamp(30px, 7.5vw, 38px); letter-spacing: -0.8px; }
  .variation-a .va-sub  { font-size: 16px; }
  .variation-a .va-lede { font-size: 17px; margin-bottom: 40px; }

  /* All multi-column content folds to a single column. */
  .variation-a .va-q-grid,
  .variation-a .va-feat-grid,
  .variation-a .va-buyer-grid { grid-template-columns: 1fr; }

  /* Hero footer meta: stop the 4-track grid + reset the divider styling
     that was designed for a horizontal row. */
  .variation-a .va-foot-meta { grid-template-columns: 1fr 1fr; gap: 20px 24px; }
  .variation-a .va-foot-cell + .va-foot-cell {
    padding-left: 0; border-left: none; margin-left: 0;
  }

  /* Hero actions go full-width so taps are comfortable. */
  .variation-a .va-actions { gap: 10px; }
  .variation-a .va-actions .btn { flex: 1 1 auto; justify-content: center; }

  .variation-a .va-buyer { padding: 30px 26px 28px; }
  .variation-a .va-q     { padding: 28px 24px 30px; }
  .variation-a .va-feat  { padding: 30px 26px 32px; }
}

/* ─────────────────────────────  ≤ 460px  ────────────────────────────── */
@media (max-width: 460px) {
  .lp .container { padding: 0 16px; }

  /* Single-column meta on the smallest screens. */
  .variation-a .va-foot-meta { grid-template-columns: 1fr; }

  /* Footer row labels wrap tighter. */
  .variation-a .va-footer-meta { gap: 16px; flex-wrap: wrap; }
}