@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .menu-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .hero-content {
    padding: 8.5rem 0 5rem;
  }

  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
  }

  .product-hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .detail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .product-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .menu-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 799px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 0.45rem);
    right: 1rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.85rem;
    min-width: 220px;
    padding: 1rem;
    background: rgba(255, 248, 232, 0.97);
    border-radius: 1.2rem;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
  }

  .site-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    width: 100%;
  }

  .cart-shell {
    grid-template-columns: 1fr;
  }

  .tracking-hero,
  .tracking-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 4.2rem 0;
  }

  .cta-banner {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .product-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-shell {
    padding: 0 0.25rem;
  }

  .hero-content {
    padding: 6rem 0 3rem;
  }

  .product-grid,
  .feature-grid,
  .gallery-grid,
  .menu-grid {
    gap: 1rem;
  }

  .testimonial-shell,
  .cta-banner,
  .panel,
  .cart-section,
  .cart-summary-card {
    padding: 1rem;
  }
}