/* ============ RESPONSIVE STYLES ============ */
/* Mobile 320-767px | Tablet 768-1024px | Desktop 1025px+ */

@media (max-width: 1100px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(3, 1fr); }
  .process-flow { grid-template-columns: repeat(3, 1fr); }
  .catalog-grid, .solutions-grid, .services-grid, .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 20px; }
}

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-copy > p { margin: 0 auto 30px; }
  .hero-ctas { justify-content: center; }
  .hero-trust { justify-content: center; }
  .stage-3d { height: 420px; }
  .assembly { width: 280px; height: 280px; }
  .float-cam { width: 120px; }
  .crane { width: 150px; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .mv-grid { grid-template-columns: 1fr; }
  .packages-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4, .stats-grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 767px) {
  :root { --header-h: 66px; }
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: block; }
  .brand img { height: 38px; }
  .brand-text strong { font-size: 16px; }
  .hero { padding-top: calc(var(--header-h) + 20px); }
  .stage-3d { height: 330px; }
  .assembly { width: 220px; height: 220px; }
  .asm-inner svg { width: 110px; height: 110px; }
  .block-1b { width: 110px; height: 70px; font-size: 34px; }
  .block-2b { width: 95px; height: 85px; font-size: 34px; }
  .block-3b { width: 115px; height: 92px; font-size: 34px; }
  .float-cam { width: 90px; }
  .crane { width: 110px; }
  .legend-chip { font-size: 11.5px; padding: 9px 16px; width: max-content; max-width: 92%; text-align: center; }
  .features-grid, .values-grid, .process-flow { grid-template-columns: 1fr; }
  .catalog-grid, .solutions-grid, .services-grid, .team-grid, .projects-grid { grid-template-columns: 1fr; }
  .packages-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 14px; }
  .stat-num { font-size: 34px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { justify-content: center; text-align: center; }
  .carousel-viewport { margin: 0 40px; }
  .prod-slide { flex-basis: 84%; }
  .testi-card { padding: 34px 24px; }
  .timeline::before { left: 14px; }
  .tl-item, .tl-item:nth-child(even) { width: 100%; left: 0; padding: 0 0 40px 46px; text-align: left; }
  .tl-item:nth-child(odd) .tl-dot, .tl-item:nth-child(even) .tl-dot { left: 4px; right: auto; }
  .method-cards { grid-template-columns: 1fr; max-width: 420px; margin: 26px auto 0; }
  .filter-bar { position: static; }
  .filter-bar .search-input { width: 100%; flex-basis: 100%; }
  .filter-chips { width: 100%; }
  .form-tabs { flex-direction: column; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .newsletter-section { padding: 30px 22px; }
  .newsletter-form { flex-direction: column; }
  .newsletter-form .btn { justify-content: center; }
  .fab-stack { bottom: 16px; right: 16px; }
  .fab { width: 50px; height: 50px; }
  .fab svg { width: 23px; height: 23px; }
  .chat-widget { bottom: 16px; right: 16px; width: calc(100vw - 32px); }
  .lightbox-thumbs { display: none; }
  .lightbox-nav.prev { left: 10px; }
  .lightbox-nav.next { right: 10px; }
  .page-hero { padding-top: calc(var(--header-h) + 70px); }
  .section-head { margin-bottom: 40px; }
  .hero-ctas .btn { width: 100%; justify-content: center; }
  .hero-trust { gap: 16px; }
  .stat-icon { width: 50px; height: 50px; margin-bottom: 12px; }
  .success-box { padding: 36px 22px; }
  .contact-card-head { padding: 22px; }
  .contact-body { padding: 20px; }
  .ba-label { font-size: 10px; padding: 5px 12px; }
}

@media (max-width: 380px) {
  .brand-text small { display: none; }
  .carousel-viewport { margin: 0 34px; }
  .prod-slide { flex-basis: 82%; flex-basis: 240px; }
  .stat-num { font-size: 28px; }
  .stat-label { font-size: 11.5px; letter-spacing: 1px; }
  .hero-trust .trust-item { font-size: 12px; }
}