.store-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  width: min(1180px, 100%);
}

.category-filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  width: min(1100px, 100%);
  margin: 0 auto 34px;
}

.category-filter {
  padding: 12px 20px;
  border: 2px solid #cfe4e5;
  border-radius: 999px;
  background: white;
  color: #173f51;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.category-filter:hover,
.category-filter:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(23, 63, 81, 0.12);
}

.category-filter.active {
  border-color: #6d3c91;
  background: #6d3c91;
  color: white;
}

.empty-category {
  width: min(700px, 100%);
  margin: 20px auto 0;
  padding: 28px;
  border: 2px dashed #cfe4e5;
  border-radius: 18px;
  text-align: center;
  font-size: 1.05rem;
}

.store-card {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.store-card .product-image-wrap {
  min-height: 320px;
  padding: 28px;
}

.store-card .product-image {
  width: 100%;
  max-width: 360px;
  max-height: 300px;
  object-fit: contain;
}

.product-link {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.product-link:hover .product-image,
.product-link:focus-visible .product-image {
  transform: scale(1.02);
}

.product-link .product-image {
  transition: transform .18s ease;
}

.store-card .product-details {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 28px;
}

.store-card .product-details h3 {
  font-size: clamp(1.55rem, 3vw, 2.1rem);
}

.store-card .product-details > p:not(.price) {
  flex: 1;
}

.store-card .product-actions .button {
  width: 100%;
}

.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-dropdown-toggle {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  padding: .55rem .35rem;
}

.nav-dropdown-menu {
  position: absolute;
  z-index: 30;
  top: calc(100% + 8px);
  left: 0;
  min-width: 220px;
  padding: 10px;
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(23,63,81,.18);
  display: none;
}

.nav-dropdown.open .nav-dropdown-menu,
.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  display: grid;
}

.nav-dropdown-menu a {
  padding: 10px 12px;
  border-radius: 10px;
  white-space: nowrap;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a:focus-visible {
  background: #f4eef8;
}

.diy-detail-page {
  width: min(1180px, calc(100% - 32px));
  margin: 34px auto 70px;
}

.diy-breadcrumbs {
  margin-bottom: 20px;
  font-size: .95rem;
}

.diy-breadcrumbs a { color: #6d3c91; }

.diy-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  gap: 42px;
  align-items: start;
}

.diy-main-image {
  width: 100%;
  max-height: 680px;
  object-fit: contain;
  border-radius: 24px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(23,63,81,.1);
}

.diy-info-card,
.diy-section-card {
  background: #fff;
  border-radius: 22px;
  padding: 26px;
  box-shadow: 0 12px 36px rgba(23,63,81,.09);
}

.diy-info-card h1 { margin-top: 8px; }
.diy-price { font-size: 2rem; font-weight: 800; color: #6d3c91; }
.diy-includes { padding-left: 1.2rem; }
.diy-includes li { margin: .55rem 0; }

.diy-section-card { margin-top: 28px; }
.diy-section-card h2 { margin-top: 0; }

.diy-addons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.diy-addon {
  border: 1px solid #dfeaec;
  border-radius: 16px;
  padding: 18px;
}

.cart-button span {
  display: inline-grid;
  min-width: 24px;
  min-height: 24px;
  margin-left: 4px;
  place-items: center;
  border-radius: 999px;
  background: #173f51;
  color: white;
  font-size: 0.8rem;
}

.cart-item {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
}

.cart-item-image {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  background: #eefafa;
  object-fit: contain;
}

.cart-item-details { min-width: 0; }
.cart-item-details strong,
.cart-item-details span { display: block; }

.cart-item-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}

.cart-item-controls button {
  min-width: 32px;
  min-height: 32px;
  border: 1px solid #cfe4e5;
  border-radius: 999px;
  background: white;
  color: #173f51;
  cursor: pointer;
}

.cart-item-controls .remove-item {
  padding: 5px 10px;
  border-color: transparent;
  color: #8b3340;
  text-decoration: underline;
}

#checkoutButton:disabled { cursor: not-allowed; opacity: 0.55; transform: none; }
.checkout-message { min-height: 1.4em; margin: 10px 0 0; color: #9b2f3f; font-size: 0.9rem; text-align: center; }

@media (max-width: 820px) {
  .diy-detail-grid { grid-template-columns: 1fr; }
  .nav-dropdown { display: block; width: 100%; }
  .nav-dropdown-toggle { width: 100%; text-align: left; }
  .nav-dropdown-menu { position: static; box-shadow: none; margin: 4px 0 8px 12px; background: transparent; }
}

@media (max-width: 620px) {
  .store-grid { grid-template-columns: 1fr; }
  .category-filters { gap: 9px; }
  .category-filter { flex: 1 1 calc(50% - 9px); padding: 10px 12px; }
  .cart-item { grid-template-columns: 52px minmax(0, 1fr); }
  .cart-item > strong:last-child { grid-column: 2; }
  .diy-detail-page { width: min(100% - 20px, 1180px); margin-top: 18px; }
  .diy-info-card, .diy-section-card { padding: 20px; }
}