/* ==========================================================================
   SignaPro — Responsive (v2)
   ========================================================================== */

/* Large desktop */
@media (max-width: 1280px) {
  :root { --maxw: 1140px; }
  .showcase-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Desktop / tablet landscape */
@media (max-width: 1024px) {
  :root { --section-padding: 90px; }
  .section { padding: 90px 0; }

  /* hide desktop nav + show hamburger */
  .nav, .header-phone { display: none; }
  .menu-toggle { display: flex; }
  .mega { display: none !important; }
  .nav > li.has-mega::after { display: none; }

  .hero { min-height: auto; padding: 50px 0; }
  .hero h1 { font-size: 2.6rem; }

  .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .about-media .img-float { width: 170px; }

  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: repeat(3, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
  .process-grid::before { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: none; border-bottom: 1px solid var(--c-line); }
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
  .materials-grid { grid-template-columns: repeat(3, 1fr); }
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }

  /* modal becomes stacked */
  .modal { grid-template-columns: 1fr; max-height: 90vh; }
  .modal-gallery { min-height: 320px; }
  .modal-content { padding: 30px; max-height: none; }

  .cta-banner { padding: 44px 40px; }
  .newsletter { padding: 40px; }
  .newsletter-inner { flex-direction: column; align-items: flex-start; }
}

/* Tablet */
@media (max-width: 768px) {
  :root { --section-padding: 70px; }
  .section { padding: 70px 0; }

  .topbar-info { gap: 14px; font-size: 0.78rem; }
  .topbar-social span { display: none; }

  .hero h1 { font-size: 2.1rem; }
  .hero p { font-size: 1rem; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 26px; }
  .hero-stat .num { font-size: 1.9rem; }
  .hero-scroll { display: none; }

  .section-head { margin-bottom: 40px; }

  .about-features { grid-template-columns: 1fr; }
  .about-media .exp-badge { left: 0; padding: 14px 18px; }
  .about-media .exp-badge .num { font-size: 1.8rem; }
  .about-media .img-float { display: none; }
  .about-sign { flex-direction: column; align-items: flex-start; gap: 16px; }

  .services-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .portfolio-item.tall { grid-row: span 1; aspect-ratio: 4/3; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .materials-grid { grid-template-columns: repeat(2, 1fr); }
  .blog-grid { grid-template-columns: 1fr; }

  .testi-card { padding: 32px 24px; }
  .testi-card p { font-size: 1rem; }

  .cta-banner { padding: 36px 26px; flex-direction: column; text-align: center; align-items: center; }
  .cta-banner .actions { width: 100%; justify-content: center; }

  .form-row { grid-template-columns: 1fr; }
  .contact-info, .contact-form-wrap { padding: 32px 26px; }

  .newsletter { padding: 32px 26px; }
  .newsletter-form { flex-direction: column; border-radius: var(--r); }
  .newsletter-form input { min-width: 0; }
  .newsletter-form .btn { width: 100%; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }

  .back-top, .whatsapp-float { right: 18px; }
  .whatsapp-float { bottom: 80px; }
  .back-top { bottom: 20px; }

  .page-banner { padding: 56px 0 48px; }

  .modal-specs { grid-template-columns: 1fr; }
  .modal-actions .btn { min-width: 0; }
}

/* Mobile */
@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .topbar .container { flex-direction: column; gap: 8px; }
  .topbar-info { justify-content: center; }

  .hero h1 { font-size: 1.8rem; }
  .hero-stats { gap: 20px; }
  .hero-stat .num { font-size: 1.6rem; }

  .showcase-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-bottom: none; }
  .industries-grid { grid-template-columns: 1fr; }

  .marquee-item { font-size: 1rem; gap: 6px; }
  .marquee-item svg { width: 18px; height: 18px; }

  .faq-q { font-size: 0.92rem; padding: 18px 20px; }
  .contact-info, .contact-form-wrap, .newsletter { padding: 26px 22px; }
  .cta-banner { padding: 30px 22px; }
  .modal-content { padding: 22px; }
}

/* ==========================================================================
   MOBILE NAV DRAWER
   ========================================================================== */
.mobile-nav {
  position: fixed; top: 0; right: -100%; width: 340px; max-width: 85vw; height: 100vh;
  background: var(--c-bg-2); z-index: 1100; box-shadow: -10px 0 40px rgba(0,0,0,0.5);
  transition: right var(--t); overflow-y: auto; padding: 24px; display: none;
  border-left: 1px solid var(--c-line);
}
.mobile-nav.open { right: 0; display: block; }
.mobile-nav-close {
  position: absolute; top: 18px; right: 18px; width: 40px; height: 40px;
  border-radius: 50%; background: rgba(255,255,255,0.06); display: flex;
  align-items: center; justify-content: center; font-size: 1.4rem; color: var(--c-text);
  border: 1px solid var(--c-line);
}
.mobile-nav .logo { margin-bottom: 28px; padding-top: 8px; color: #fff; }
.mobile-nav .m-nav > li { border-bottom: 1px solid var(--c-line); }
.mobile-nav .m-nav > li > a, .mobile-nav .m-nav > li > .m-toggle {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 8px; font-family: var(--font-h); font-weight: 600; color: var(--c-text); font-size: 1rem; cursor: pointer;
}
.mobile-nav .m-nav > li > a:hover, .mobile-nav .m-nav > li > .m-toggle:hover { color: var(--c-accent); }
.mobile-nav .m-toggle .chev { transition: transform var(--t-fast); width: 18px; height: 18px; }
.mobile-nav .m-toggle.open .chev { transform: rotate(180deg); }
.mobile-nav .m-sub { max-height: 0; overflow: hidden; transition: max-height var(--t); padding-left: 12px; }
.mobile-nav .m-sub li a { display: block; padding: 11px 8px; font-size: 0.9rem; color: var(--c-text-dim); }
.mobile-nav .m-sub li a:hover { color: var(--c-accent); }
.mobile-nav .m-cta { margin-top: 24px; padding: 20px; background: linear-gradient(135deg, rgba(255,122,0,0.12), rgba(0,217,255,0.08)); border: 1px solid var(--c-line-2); border-radius: var(--r); color: var(--c-text); text-align: center; }
.mobile-nav .m-cta p { font-size: 0.85rem; color: var(--c-text-dim); margin-bottom: 12px; }
.mobile-overlay { position: fixed; inset: 0; background: rgba(3,5,10,0.6); backdrop-filter: blur(4px); z-index: 1050; opacity: 0; visibility: hidden; transition: all var(--t); }
.mobile-overlay.show { opacity: 1; visibility: visible; }
@media (max-width: 1024px) { .mobile-nav { display: block; } }