/* =========================================================
   CartNova Responsive Styles
   ========================================================= */

@media (max-width: 1100px) {
  .category-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

  .products-layout {
    grid-template-columns: 220px 1fr;
  }
  .skeleton-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
}

@media (max-width: 900px) {
  .nav-search {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem;
    gap: 0.2rem;
    margin: 0;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
    box-shadow: var(--shadow);
  }

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

  .nav-links a {
    padding: 0.85rem 1rem;
  }

  .nav-toggle {
    display: inline-block;
    margin-left: auto;
  }

  .nav-actions {
    margin-left: 0;
  }

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

  .layout-2col,
  .details-layout,
  .products-layout,
  .profile-layout {
    grid-template-columns: 1fr;
  }

  .filters {
    position: static;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 3.5rem 0;
  }
}

@media (max-width: 640px) {
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .product-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.8rem;
  }

  .feature-grid,
  .why-grid,
  .reviews-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .cart-item {
    grid-template-columns: 72px 1fr;
  }

  .cart-item-side {
    grid-column: 1 / -1;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    text-align: left;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .newsletter {
    padding: 1.5rem;
  }

  .newsletter-form {
    width: 100%;
  }

  .auth-card {
    padding: 1.4rem;
  }

  .page-header {
    padding-top: 1.4rem;
  }

  .product-name {
    font-size: 0.92rem;
    min-height: auto;
  }

  .btn {
    padding: 0.7rem 1.1rem;
  }
  .saved-address { align-items: flex-start; flex-direction: column; }
  .order-detail-grid { grid-template-columns: 1fr; }
  .skeleton-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .tracking-step { font-size: .65rem; }
  .tracking-step span { width: 28px; height: 28px; }
  .tracking-step:not(:last-child)::after { top: 13px; }
  .newsletter { align-items: flex-start; flex-direction: column; }
  .newsletter-form { flex-direction: column; }
}

@media (max-width: 480px) {
  .skeleton-grid { grid-template-columns: 1fr; }
  .toast-container { left:.75rem; right:.75rem; bottom:.75rem; }
  .toast { min-width:0; width:100%; max-width:none; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { scroll-behavior:auto !important; animation-duration:.01ms !important; animation-iteration-count:1 !important; transition-duration:.01ms !important; }
}

@media (max-width: 420px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .logo span {
    font-size: 1.15rem;
  }
}

@media (max-width: 640px) {
  .product-grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 360px) {
  .container { width: min(100% - 1.25rem, var(--container)); }
  .nav-inner { gap: 0.5rem; }
  .logo { gap: 0.35rem; }
}