/* Responsive — breakpoint overrides only */
@media (max-width: 768px) {
  .site-header-inner {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 10px;
    align-items: center;
  }

  .site-brand {
    grid-column: 1;
  }

  .nav-toggle {
    display: inline-flex;
    grid-column: 2;
    margin-left: 0;
  }

  .header-actions {
    grid-column: 3;
    order: unset;
  }

  .topnav {
    display: none;
    grid-column: 1 / -1;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 12px 0 4px;
    border-top: 1px solid var(--line);
    width: 100%;
  }

  .topnav a {
    padding: 10px 8px;
    border-radius: var(--radius-sm);
  }

  .site-header.is-nav-open .topnav {
    display: flex;
  }

  .cart-line {
    grid-template-columns: 72px 1fr;
    gap: 8px 12px;
  }

  .cart-line-body,
  .cart-line-qty,
  .cart-line-total,
  .cart-line-actions {
    grid-column: 2;
  }

  .cart-line-total {
    text-align: left;
    font-weight: 700;
  }
}

@media (max-width: 1000px) {
  .hero,
  .detail-layout,
  .admin-wrap,
  .builder-shell {
    grid-template-columns: 1fr;
  }

  .builder-canvas,
  .builder-panel,
  .product-gallery,
  .product-summary {
    position: relative;
    top: auto;
  }

  .feature-strip {
    grid-template-columns: 1fr;
  }

  .builder-canvas {
    min-height: auto;
  }

  .builder-order-board {
    grid-template-columns: 1fr;
  }

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