/* ================================================================
   AXIOM-STEM — Responsive Stylesheet
   Loaded last so these rules override page-level styles.
   Breakpoints (max-width): 1280 | 1024 | 768 | 480 | 375 | 320
   ================================================================ */

/* ── Global overflow guard ──────────────────────────────────────── */
html, body { overflow-x: hidden; max-width: 100%; }
/* ── Vanta embed card ────────────────────────────────────────────── */
.vanta-card {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(21,24,27,0.92);
  box-shadow: 0 24px 70px rgba(0,0,0,0.3), 0 0 0 1px rgba(216,247,68,0.10), 0 0 40px rgba(216,247,68,0.18);
}
.vanta-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
  background: linear-gradient(180deg, rgba(255,255,255,0.05), transparent);
  gap: 18px;
}
.vanta-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}
.vanta-icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: rgba(216,247,68,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
}
.vanta-copy-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}
.vanta-copy-subtitle {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.06em;
}
.vanta-status {
  padding: 9px 14px;
  border-radius: 999px;
  background: rgba(216,247,68,0.12);
  color: var(--color-precision-gold);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  white-space: nowrap;
}
.vanta-image-wrap {
  width: 100%;
  background: var(--color-deep-space);
  overflow: hidden;
}
.vanta-image {
  width: 100%;
  display: block;
  object-fit: cover;
  max-height: 720px;
}
.section-header {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
}
.sec-eyebrow-lined {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  color: var(--color-precision-gold);
  margin: 0 auto 18px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 700;
}
.sec-eyebrow-lined::before,
.sec-eyebrow-lined::after {
  content: "";
  width: 88px;
  height: 1px;
  background: rgba(216,247,68,0.35);
  border-radius: 999px;
}
.vanta-title {
  font-size: clamp(62px, 8vw, 96px);
  letter-spacing: -0.08em;
  line-height: 0.98;
  margin: 0 auto 16px;
  color: var(--text-primary);
}
.vanta-sub {
  max-width: 680px;
  margin: 0 auto;
  color: rgba(196,210,226,0.88);
  font-size: 18px;
  line-height: 1.75;
}

/* ── Nav links wrapper (desktop, acts transparent) ──────────────── */
.nav-links-wrap {
  display: flex; align-items: center; flex: 1; gap: 2px;
}

/* ── Burger button (sidebar trigger — visible at all breakpoints) ── */
.nav-burger {
  position: relative; z-index: 0;
  display: flex;
  flex-direction: column; justify-content: center; align-items: center;
  gap: 5px; width: 40px; height: 40px; flex-shrink: 0;
  background: var(--color-deep-space);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px; padding: 0; margin-left: auto;
}
/* A single short glowing segment traces the button's actual border path
   (not a rotating shape behind it) — a small SVG rect outline with a
   short dash animated around its perimeter via stroke-dashoffset. */
.nav-burger-ring {
  position: absolute; inset: -1px; z-index: -1;
  width: calc(100% + 2px); height: calc(100% + 2px);
  pointer-events: none; overflow: visible;
}
.nav-burger-ring rect {
  fill: none;
  stroke: var(--color-precision-gold);
  stroke-width: 1.5;
  stroke-linecap: round;
  filter: drop-shadow(0 0 2.5px rgba(216,247,68,0.85));
}
.nav-burger span {
  display: block; width: 20px; height: 2px;
  background: var(--color-warm-white); border-radius: 2px;
  transition: transform 200ms var(--ease-out), opacity 120ms var(--ease-out), background 150ms;
}
.nav-burger:hover span { background: var(--color-precision-gold); }
.nav-burger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-burger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile nav overlay ─────────────────────────────────────────── */
.nav-mobile-overlay {
  display: none;
  position: fixed; inset: 68px 0 0 0; z-index: 199;
  background: rgba(21,24,27,0.98);
  backdrop-filter: blur(24px); -webkit-backdrop-filter: blur(24px);
  border-top: 1px solid rgba(255,255,255,0.07);
  flex-direction: column; padding: 20px 20px 48px;
  overflow-y: auto;
}
.nav-mobile-overlay.open { display: flex; }
.nav-mobile-link {
  display: block; font-family: var(--font-sans); font-weight: 500;
  font-size: 17px; color: var(--text-secondary); text-decoration: none;
  padding: 15px 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: color 150ms, background 150ms;
  border-radius: 4px;
}
.nav-mobile-link:hover,
.nav-mobile-link.active  { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.nav-mobile-cta { margin-top: 24px; }
.nav-mobile-cta .btn { width: 100%; justify-content: center; }

/* ── Services dropdown (desktop) ─────────────────────────────────── */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger {
  display: inline-flex; align-items: center; gap: 5px;
}
.nav-dropdown-chevron { transition: transform 200ms var(--ease-out); flex-shrink: 0; }
.nav-dropdown.open .nav-dropdown-chevron,
.nav-dropdown:hover .nav-dropdown-chevron { transform: rotate(180deg); }
.nav-dropdown-menu {
  position: absolute; top: calc(100% + 12px); left: 0; min-width: 250px;
  background: rgba(21,24,27,0.98); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; padding: 8px; box-shadow: var(--shadow-lg);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), visibility 180ms;
  z-index: 210;
}
.nav-dropdown.open .nav-dropdown-menu,
.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.nav-dropdown-item {
  display: block; padding: 9px 13px; border-radius: 5px;
  font-family: var(--font-sans); font-size: 12.5px; font-weight: 500;
  color: var(--text-secondary); text-decoration: none;
  border: 1px solid transparent;
  transition: background 200ms, color 200ms, border-color 200ms, box-shadow 200ms;
}
.nav-dropdown-item.active { color: var(--color-precision-gold); background: rgba(216,247,68,0.08); }
.nav-dropdown-item:hover {
  color: var(--color-precision-gold);
  background: rgba(216,247,68,0.14);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-color: rgba(216,247,68,0.35);
  box-shadow: 0 0 16px rgba(216,247,68,0.35), inset 0 1px 0 rgba(216,247,68,0.15);
}

/* ── Top nav links — same gold glass hover as sidebar buttons ────── */
.nav-link {
  border: 1px solid transparent;
  transition: background 200ms, color 200ms, border-color 200ms, box-shadow 200ms;
}
.nav-link.active { color: var(--color-precision-gold); background: rgba(216,247,68,0.08); }
.nav-link:hover {
  color: var(--color-precision-gold);
  background: rgba(216,247,68,0.14);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-color: rgba(216,247,68,0.35);
  box-shadow: 0 0 16px rgba(216,247,68,0.35), inset 0 1px 0 rgba(216,247,68,0.15);
}
.nav-dropdown.open .nav-dropdown-trigger,
.nav-dropdown:hover .nav-dropdown-trigger {
  color: var(--color-precision-gold);
  background: rgba(216,247,68,0.14);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-color: rgba(216,247,68,0.35);
  box-shadow: 0 0 16px rgba(216,247,68,0.35), inset 0 1px 0 rgba(216,247,68,0.15);
}

/* ── Services accordion (mobile) ─────────────────────────────────── */
.nav-mobile-services-trigger {
  width: 100%; display: flex; align-items: center; justify-content: center; gap: 6px;
  background: none; border: none; cursor: pointer; font: inherit;
}
.nav-mobile-chevron { transition: transform 200ms var(--ease-out); }
.nav-mobile-services.open .nav-mobile-chevron { transform: rotate(180deg); }
.nav-mobile-services-menu {
  max-height: 0; overflow: hidden;
  transition: max-height 280ms var(--ease-out);
  display: flex; flex-direction: column; align-items: center;
}
.nav-mobile-services.open .nav-mobile-services-menu { max-height: 420px; }
.nav-mobile-sublink {
  display: block; font-size: 15px; color: var(--text-secondary);
  text-decoration: none; padding: 12px 12px; text-align: center;
  transition: color 150ms;
}
.nav-mobile-sublink:hover,
.nav-mobile-sublink.active { color: var(--color-precision-gold); }

/* ================================================================
   1280px — Small Laptop
   ================================================================ */
@media (max-width: 1280px) {
  .container { padding: 0 40px; }
  .nav-inner { padding: 0 40px; }
  .footer-grid { gap: 40px; }
}

/* ================================================================
   1024px — Tablet Landscape
   ================================================================ */
@media (max-width: 1024px) {
  .container { padding: 0 32px; }
  .nav-inner { padding: 0 32px; max-width: 100%; }
  .section   { padding: 72px 0; }
  .cta-section { padding: 72px 0; }

  /* Typography */
  .sec-title { font-size: 30px; }

  /* Hero — hide canvas, go single column */
  .hero       { grid-template-columns: 1fr; }
  .hero-right { display: none; }
  .hero-left  { padding: 116px 24px 60px; }

  /* Inner-page heroes */
  .page-hero { padding: 120px 0 64px; }
  .page-hero-grid       { grid-template-columns: 1fr; }
  .page-hero-canvas-wrap { display: none; }

  /* Index services → 2 columns */
  .services-grid { grid-template-columns: repeat(2,1fr) !important; }

  /* About value cards → 2 columns */
  .value-grid { grid-template-columns: repeat(2,1fr) !important; }

  /* About team → 3 columns */
  .team-grid { grid-template-columns: repeat(3,1fr) !important; }

  /* Process → 2 columns */
  .process-grid { grid-template-columns: repeat(2,1fr); }
  .process-grid::after { display: none; }

  /* About split stays 1fr 1fr — reduces gap */
  .split { gap: 48px; }

  /* Footer → 2 columns */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

/* ================================================================
   768px — Tablet Portrait + Mobile Nav Activation
   ================================================================ */
@media (max-width: 768px) {

  /* ── Mobile navigation ── */
  .nav-links-wrap { display: none; }
  .nav-burger     { display: flex; }
  .nav-inner      { padding: 0 20px; max-width: 100%; }

  /* ── Spacing ── */
  .container { padding: 0 20px; }
  .section   { padding: 56px 0; }
  .cta-section { padding: 56px 0; }

  /* ── Typography ── */
  .sec-title { font-size: 26px; }
  .sec-sub   { font-size: 15px; }
  .sec-header-center { margin-bottom: 40px; }

  /* ── Hero (index) ── */
  .page-hero  { padding: 100px 0 48px; }
  .hero-left  { padding: 96px 20px 48px; }
  .hero-sub   { font-size: 15px; max-width: 100%; margin-bottom: 28px; }
  .hero-pill  { font-size: 10px; }
  .hero-ctas  { flex-wrap: wrap; gap: 10px; }
  .hero-ctas .btn { flex: 1 1 calc(50% - 5px); min-width: 140px; justify-content: center; }

  /* Hero stats — 2×2 grid */
  .hero-stats { width: 100%; flex-wrap: wrap; border-radius: 8px; }
  .stat {
    flex: 1 1 calc(50% - 1px);
    border-right: none !important;
    border-bottom: 1px solid rgba(255,255,255,0.07);
  }
  .stat:nth-child(odd)  { border-right: 1px solid rgba(255,255,255,0.07) !important; }
  .stat:nth-child(3),
  .stat:nth-child(4)    { border-bottom: none; }

  /* ── Trust strip ── */
  .trust-inner    { gap: 14px; justify-content: center; }
  .trust-companies{ gap: 10px; flex-wrap: wrap; justify-content: center; }

  /* ── Services (index) → 1 column ── */
  .services-grid { grid-template-columns: 1fr !important; }

  /* ── Process (index) → 1 column ── */
  .process-grid       { grid-template-columns: 1fr; }
  .process-grid::after{ display: none; }
  .process-step       { padding: 32px 24px; }

  /* ── About: split → 1 column ── */
  .split         { grid-template-columns: 1fr !important; gap: 40px; }
  .split-reverse { direction: ltr; }

  /* ── About: stats strip → 2×2 ── */
  .stats-strip          { grid-template-columns: repeat(2,1fr); }
  .stats-item:nth-child(2) { border-right: none; }
  .stats-item:nth-child(3) { border-top: 1px solid rgba(255,255,255,0.07); }

  /* Portfolio stats strip (different class) */
  .stats-strip-item:nth-child(2) { border-right: none; }
  .stats-strip-item:nth-child(3) { border-top: 1px solid rgba(255,255,255,0.07); }

  /* ── About: value cards → 2 columns ── */
  .value-grid { grid-template-columns: repeat(2,1fr) !important; }

  /* ── About: team → 2 columns ── */
  .team-grid { grid-template-columns: repeat(2,1fr) !important; }

  /* ── About: service rows ── */
  .service-row { flex-wrap: wrap; gap: 16px; }

  /* ── Contact ── */
  .contact-grid { grid-template-columns: 1fr !important; gap: 32px; }
  .form-row     { grid-template-columns: 1fr !important; }
  .form-card    { padding: 28px 20px; }

  /* ── Portfolio ── */
  .featured-card { grid-template-columns: 1fr !important; }
  .featured-visual { min-height: 200px; }
  .featured-body { padding: 28px 24px; }
  .testi-grid    { grid-template-columns: repeat(2,1fr) !important; }
  .portfolio-grid { grid-template-columns: repeat(2,1fr); }

  /* ── Footer ── */
  .footer-grid   { grid-template-columns: 1fr 1fr !important; gap: 24px; }
  .footer-col    { padding-top: 28px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
}

/* ================================================================
   480px — Large Mobile
   ================================================================ */
@media (max-width: 480px) {
  .container   { padding: 0 16px; }
  .nav-inner   { padding: 0 16px; }
  .section     { padding: 48px 0; }
  .cta-section { padding: 48px 0; }
  .page-hero   { padding: 88px 0 40px; }

  /* Typography */
  .sec-title { font-size: 22px; }
  .sec-sub   { font-size: 14px; }
  .sec-header-center { margin-bottom: 32px; }

  /* Hero */
  .hero-left { padding: 82px 20px 40px; }
  .hero-sub  { font-size: 14px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; flex: none; }

  /* Process */
  .process-step { padding: 28px 16px; }

  /* About value cards → 1 column */
  .value-grid { grid-template-columns: 1fr !important; }

  /* About gallery → 1 column */
  .gallery-grid { grid-template-columns: 1fr !important; }

  /* About stats */
  .stats-strip  { grid-template-columns: 1fr 1fr; }
  .stats-item   { padding: 20px 14px; }
  .stats-val    { font-size: 26px; }

  /* About team → 2 columns */
  .team-grid { grid-template-columns: repeat(2,1fr) !important; }
  .team-card { padding: 24px 16px; }
  .team-avatar { width: 60px; height: 60px; }

  /* Contact */
  .form-card  { padding: 24px 14px; }
  .info-card  { padding: 18px 16px; gap: 12px; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr !important; }
  .featured-body  { padding: 24px 16px; }
  .testi-grid     { grid-template-columns: 1fr !important; }
  .vanta-card {
    border-radius: 20px;
  }
  .vanta-card-header {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  .vanta-status {
    width: fit-content;
    margin-top: 8px;
  }
  .vanta-iframe {
    min-height: 520px;
  }

  /* Footer */
  .footer-grid { grid-template-columns: 1fr !important; }
  .footer-col  { padding-top: 0; }

  /* CTA */
  .cta-section .btn-lg  { width: 100%; justify-content: center; }
  .cta-section div[style*="gap"] { flex-direction: column; align-items: stretch; }
}

/* ================================================================
   480px — Large Mobile
   ================================================================ */
@media (max-width: 480px) {
  .container   { padding: 0 16px; }
  .nav-inner   { padding: 0 16px; }
  .section     { padding: 48px 0; }
  .cta-section { padding: 48px 0; }
  .page-hero   { padding: 88px 0 40px; }

  /* Typography */
  .sec-title { font-size: 22px; }
  .sec-sub   { font-size: 14px; }
  .sec-header-center { margin-bottom: 32px; }

  /* Hero */
  .hero-left { padding: 82px 20px 40px; }
  .hero-sub  { font-size: 14px; }
  .hero-ctas { flex-direction: column; }
  .hero-ctas .btn { width: 100%; flex: none; }

  /* Process */
  .process-step { padding: 28px 16px; }

  /* About value cards → 1 column */
  .value-grid { grid-template-columns: 1fr !important; }

  /* About gallery → 1 column */
  .gallery-grid { grid-template-columns: 1fr !important; }

  /* About stats */
  .stats-strip  { grid-template-columns: 1fr 1fr; }
  .stats-item   { padding: 20px 14px; }
  .stats-val    { font-size: 26px; }

  /* About team → 2 columns */
  .team-grid { grid-template-columns: repeat(2,1fr) !important; }
  .team-card { padding: 24px 16px; }
  .team-avatar { width: 60px; height: 60px; }

  /* Contact */
  .form-card  { padding: 24px 14px; }
  .info-card  { padding: 18px 16px; gap: 12px; }

  /* Portfolio */
  .portfolio-grid { grid-template-columns: 1fr !important; }
  .featured-body  { padding: 24px 16px; }
  .testi-grid     { grid-template-columns: 1fr !important; }

  .vanta-card {
    border-radius: 18px;
  }
  .vanta-card-header {
    padding: 16px 14px;
  }
  .vanta-copy-title {
    font-size: 14px;
  }
  .vanta-copy-subtitle {
    font-size: 12px;
  }
  .vanta-iframe {
    min-height: 460px;
  }
  /* Footer */
  .footer-grid { grid-template-columns: 1fr !important; }
  .footer-col  { padding-top: 0; }

  /* CTA */
  .cta-section .btn-lg  { width: 100%; justify-content: center; }
  .cta-section div[style*="gap"] { flex-direction: column; align-items: stretch; }
}

/* ================================================================
   375px — Standard Mobile
   ================================================================ */
@media (max-width: 375px) {
  .container { padding: 0 12px; }
  .nav-inner { padding: 0 12px; }

  .sec-title { font-size: 20px; }

  /* Stats strip → 1 column */
  .stats-strip { grid-template-columns: 1fr !important; }
  .stats-item  { border-right: none !important; border-bottom: 1px solid rgba(255,255,255,0.07) !important; }
  .stats-item:last-child { border-bottom: none !important; }

  /* Hero stats → 1 column */
  .hero-stats .stat { flex: 1 1 100%; border-right: none !important; }
  .stat:nth-child(odd) { border-right: none !important; }
  .stat:nth-child(3),
  .stat:nth-child(4)   { border-bottom: none; }

  /* Team → 1 column */
  .team-grid { grid-template-columns: 1fr !important; }

  /* Portfolio stats strip → 1 column */
  .stats-strip-item { border-right: none !important; border-bottom: 1px solid rgba(255,255,255,0.07); }
  .stats-strip-item:last-child { border-bottom: none; }
}

/* ================================================================
   320px — Small Mobile (minimum supported width)
   ================================================================ */
@media (max-width: 320px) {
  .container { padding: 0 10px; }
  .nav-inner { padding: 0 10px; }
  .sec-title { font-size: 18px; }
  .btn-lg    { padding: 12px 20px; font-size: 14px; }
  .btn-md    { padding: 9px 16px;  font-size: 13px; }
  .nav-logo  { height: 34px; }
}