/* ============================================================
   BlueShell — Responsive Stylesheet
   Mobile-first breakpoints and adaptive layouts
   ============================================================ */

/* ─── Large Tablets (≤ 1024px) ─── */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .about-grid,
  .product-detail-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-detail-image {
    max-width: 600px;
    margin: 0 auto;
  }
}

/* ─── Tablets (≤ 768px) ─── */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
    --header-height: 70px;
  }

  .main-nav {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .logo {
    height: 42px;
  }

  .hero-content {
    padding: 40px 0;
  }

  .hero-desc {
    font-size: 1.05rem;
  }

  .btn-group {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    text-align: center;
  }

  .features-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .products-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .search-box {
    max-width: 100%;
  }

  .filter-bar {
    gap: 8px;
  }

  .filter-btn {
    padding: 8px 18px;
    font-size: 0.85rem;
  }

  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
  }

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

  .contact-form {
    padding: 28px;
  }

  .contact-info-card {
    padding: 24px;
  }

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

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

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

  .cta-section {
    padding: 60px 0;
  }

  .page-hero {
    padding: calc(var(--header-height) + 40px) 0 40px;
  }
}

/* ─── Mobile (≤ 480px) ─── */
@media (max-width: 480px) {
  :root {
    --section-padding: 48px;
  }

  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 2rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .stat-number {
    font-size: 2rem;
  }

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

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

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

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

  .product-detail-actions {
    flex-direction: column;
  }

  .product-detail-actions .btn {
    width: 100%;
  }

  .glass-card {
    padding: 24px;
  }

  .feature-card {
    padding: 28px 24px;
  }

  .testimonial-card {
    padding: 28px;
  }

  .timeline {
    padding-left: 30px;
  }

  .network-badge {
    padding: 10px 18px;
    font-size: 0.85rem;
  }

  .map-container {
    aspect-ratio: 16/10;
  }
}

/* ─── Reduced Motion ─── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .animate-on-scroll {
    opacity: 1;
    transform: none;
  }
}

/* ─── High Contrast ─── */
@media (prefers-contrast: high) {
  :root {
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .btn-outline {
    border-width: 3px;
  }
}

/* ─── Print Styles ─── */
@media print {
  .site-header,
  .site-footer,
  .hamburger,
  .mobile-drawer,
  .cta-section,
  .hero-scroll {
    display: none !important;
  }

  body {
    color: #000;
  }

  .hero {
    min-height: auto;
    padding: 20px 0;
  }

  .hero-overlay {
    display: none;
  }

  .hero-content {
    color: #000;
  }

  .hero-title {
    color: #000;
  }
}