/* ============================================================
   NFPA70E.NET — SHARED MOBILE STYLESHEET
   Injected via <link> on all pages. Overrides embedded styles
   at tablet (≤900px), mobile (≤768px), and small phone (≤480px).
   ============================================================ */

/* ============================================================
   HAMBURGER BUTTON
   ============================================================ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  flex-shrink: 0;
}
.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: #1A4FA0;
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  transform-origin: center;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   MOBILE NAV DRAWER
   ============================================================ */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: #0D2B5E;
  z-index: 999;
  flex-direction: column;
  padding: 0;
  overflow-y: auto;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
}
.mobile-nav-drawer.open {
  transform: translateX(0);
}
.mobile-nav-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.mobile-nav-drawer-close {
  background: none;
  border: none;
  color: #fff;
  font-size: 28px;
  cursor: pointer;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  line-height: 1;
}
.mobile-nav-links {
  list-style: none;
  padding: 16px 0;
  margin: 0;
  flex: 1;
}
.mobile-nav-links li {
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.mobile-nav-links li a {
  display: block;
  padding: 16px 24px;
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  text-decoration: none;
  transition: background 0.15s;
}
.mobile-nav-links li a:hover,
.mobile-nav-links li a:active {
  background: rgba(255,255,255,0.08);
  color: #6FAEE8;
}
.mobile-nav-cta {
  padding: 20px 24px 32px;
  border-top: 1px solid rgba(255,255,255,0.12);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.mobile-nav-cta .btn-primary {
  display: block;
  text-align: center;
  padding: 14px 24px;
  font-size: 16px;
  background: #E6A817;
  color: #07173A;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
}
.mobile-nav-phone {
  display: block;
  text-align: center;
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  padding: 12px;
}

/* ============================================================
   TABLET — 900px
   ============================================================ */
@media (max-width: 900px) {

  /* Container */
  .container { padding-left: 24px; padding-right: 24px; }

  /* Stats grid: 4-col → 2-col */
  .stats-grid { grid-template-columns: 1fr 1fr; }

  /* Services: 3-col → 2-col */
  .services-grid { grid-template-columns: 1fr 1fr; }

  /* About section: 2-col → 1-col */
  .about-inner { grid-template-columns: 1fr; gap: 36px; }
  .about-img { height: 300px; }
  .about-badge-float { right: 0; bottom: -12px; }

  /* Industries: 3-col → 2-col */
  .industries-grid { grid-template-columns: 1fr 1fr; gap: 20px; }
  .industry-card { height: 320px; }

  /* Why-us grid */
  .why-grid { grid-template-columns: 1fr 1fr; }

  /* Testimonials */
  .testimonials-grid { grid-template-columns: 1fr; }

  /* Blog grid */
  .blog-grid { grid-template-columns: 1fr 1fr; }

  /* Footer: 4-col → 2-col */
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  /* Page hero */
  .page-hero h1 { font-size: 34px; }
  .page-hero-img { height: 320px; object-fit: cover; }

  /* State page grids */
  .formats-grid { grid-template-columns: 1fr 1fr; }
  .vosh-grid { grid-template-columns: 1fr; gap: 32px; }
  .faq-grid { grid-template-columns: 1fr; }

  /* Quote / contact layout */
  .quote-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .contact-sidebar { display: none; }

  /* Credential strip: scroll horizontally */
  .credential-strip-inner {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .credential-item { min-width: 160px; }

}

/* ============================================================
   MOBILE — 768px
   ============================================================ */
@media (max-width: 768px) {

  /* Topbar — hide email on small screens */
  .topbar-contact a:not(.topbar-phone-highlight) { display: none; }
  .topbar-badge { display: none; }
  .topbar-inner { justify-content: center; }

  /* NAV — show hamburger, hide desktop links */
  .nav-hamburger { display: flex; }
  .nav-links { display: none !important; }
  .nav-cta { display: none !important; }
  .mobile-nav-drawer { display: flex; flex-direction: column; }
  .nav-inner { height: 60px; }
  .site-logo { height: 36px; }

  /* Hero — homepage */
  .hero { min-height: 460px; }
  .hero-content { padding: 48px 0 40px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 15px; }
  .hero-cta { flex-direction: column; align-items: flex-start; gap: 10px; }
  .hero-phone-line { margin-top: 4px; }
  .hero-phone-line a { font-size: 17px; }

  /* Stats: 2-col on 768 stays */

  /* Services: stack to 1-col */
  .services-grid { grid-template-columns: 1fr; }

  /* Industries: 2-col → 1-col */
  .industries-grid { grid-template-columns: 1fr; }
  .industry-card { height: 260px; }

  /* Why-us: stack */
  .why-grid { grid-template-columns: 1fr; }

  /* Blog grid: 1-col */
  .blog-grid { grid-template-columns: 1fr; }

  /* Blog header: stack */
  .blog-header { flex-direction: column; align-items: flex-start; gap: 12px; }

  /* Section typography */
  .section-title { font-size: 26px; }
  .section-sub { font-size: 15px; }

  /* Page hero (inner pages) */
  .page-hero h1 { font-size: 26px; }
  .page-hero-sub { font-size: 15px; }
  .page-hero-img { height: 260px; }
  .page-hero-content { padding: 32px 0; }

  /* CTA strip */
  .cta-strip-actions { flex-direction: column; align-items: center; gap: 12px; }
  .cta-strip-actions a { width: 100%; max-width: 300px; text-align: center; }
  .cta-strip h2 { font-size: 24px; }
  .cta-strip p { font-size: 14px; }

  /* Footer: stack all columns */
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-bottom-links { justify-content: center; flex-wrap: wrap; }

  /* State pages */
  .industries-grid { grid-template-columns: 1fr; }
  .formats-grid { grid-template-columns: 1fr; }
  .vosh-stats { grid-template-columns: 1fr 1fr; }

  /* Forms */
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .form-card { padding: 24px 18px; }

  /* Curriculum / content grids */
  .curriculum-grid { grid-template-columns: 1fr; }
  .outcome-grid { grid-template-columns: 1fr 1fr; }

  /* About page */
  .story-inner { grid-template-columns: 1fr; }
  .story-img { height: 240px; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .carousel-track { flex-direction: column; }

  /* Blog page */
  .blog-cards-grid { grid-template-columns: 1fr; }
  .blog-post-layout { grid-template-columns: 1fr; }
  .blog-sidebar { display: none; }

  /* Onsite / Virtual training pages */
  .what-grid { grid-template-columns: 1fr; }
  .proof-grid { grid-template-columns: 1fr; }

  /* Contact page sidebar hidden on mobile */
  .contact-sidebar { display: none; }
  .contact-layout { display: block; }
  .contact-main { width: 100%; }

  /* General button sizing */
  .btn-primary,
  .btn-secondary,
  .btn-white,
  .btn-outline-white {
    padding: 12px 20px;
    font-size: 14px;
  }

  /* About page float badge */
  .about-badge-float { display: none; }

  /* Credentials strip */
  .credential-strip-inner {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .credential-item { min-width: 180px; padding: 12px 14px; }
}

/* ============================================================
   SMALL PHONE — 480px
   ============================================================ */
@media (max-width: 480px) {

  .container { padding-left: 16px; padding-right: 16px; }

  /* Hero */
  .hero { min-height: 400px; }
  .hero h1 { font-size: 26px; }
  .hero-sub { font-size: 14px; }
  .hero-content { padding: 36px 0 32px; }

  /* Stats: 2-col → 1-col */
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-number { font-size: 28px; }

  /* Section typography */
  .section-title { font-size: 22px; }

  /* Page hero */
  .page-hero h1 { font-size: 22px; }
  .page-hero-img { height: 220px; }

  /* Industries */
  .industry-card { height: 220px; }

  /* Values/outcome grids: 2-col → 1-col */
  .values-grid { grid-template-columns: 1fr; }
  .outcome-grid { grid-template-columns: 1fr; }
  .vosh-stats { grid-template-columns: 1fr; }

  /* Footer bottom */
  .footer-bottom p { font-size: 11px; }

  /* Blog */
  .blog-img { height: 160px; }
  .blog-card { flex-direction: column; }
  .blog-card-h .blog-img { width: 100%; height: 160px; }

  /* Forms */
  .form-submit, .btn-submit { font-size: 15px; padding: 14px; }

  /* Testimonials */
  .testimonial-card { padding: 20px; }
  .testimonials-grid { grid-template-columns: 1fr; }

  /* CTA strip */
  .cta-strip { padding: 40px 0; }
  .cta-strip h2 { font-size: 20px; }
  .cta-strip-actions a { max-width: 100%; }

  /* FAQ */
  .faq-list summary { font-size: 14px; padding: 14px 16px; }

  /* Curriculum image */
  .curriculum-img { display: none; }
}