/* ==========================================================================
   ZENFALCON - Responsive Stylesheet
   Ensures flawless presentation across Desktops, Tablets, and Mobile Devices
   ========================================================================== */

/* Tablet & Smaller Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .statutory-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .segments-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .quality-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .rfq-card {
    grid-template-columns: 1fr;
  }

  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 36px;
  }
}

/* Tablets (<= 860px) */
@media (max-width: 860px) {
  .top-notice-bar {
    display: none; /* Conserve vertical space on mobile/tablet */
  }

  .site-header {
    height: 72px;
  }

  .header-inner {
    height: 72px;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: #ffffff;
    border-bottom: 1px solid var(--border-light);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: 0 16px 32px rgba(15, 23, 42, 0.12);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    z-index: 999;
  }

  .main-nav.nav-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .btn-header-rfq {
    display: none;
  }

  .directors-grid {
    grid-template-columns: 1fr;
  }

  .trade-ops-grid {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.3rem;
  }

  .section-title {
    font-size: 1.9rem;
  }
}

/* Mobile Devices (<= 640px) */
@media (max-width: 640px) {
  .hero-section {
    padding: 48px 0;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-key-highlights {
    grid-template-columns: 1fr;
  }

  .statutory-grid {
    grid-template-columns: 1fr;
  }

  .segments-grid {
    grid-template-columns: 1fr;
  }

  .catalog-grid {
    grid-template-columns: 1fr;
  }

  .quality-grid {
    grid-template-columns: 1fr;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .rfq-form-body {
    padding: 28px 20px;
  }

  .rfq-sidebar {
    padding: 32px 24px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
  }

  .stat-strip-details {
    flex-direction: column;
    gap: 8px;
  }

  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }

  .catalog-controls-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .catalog-search-wrap {
    min-width: 100%;
  }

  .catalog-filter-group {
    justify-content: flex-start;
  }
}