/**
 * Ecommerce Product Styles
 * Product cards, grids, detail page, variants, reviews
 */

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: var(--space-6);
}

.product-grid-2 { grid-template-columns: repeat(2, 1fr); }
.product-grid-3 { grid-template-columns: repeat(3, 1fr); }
.product-grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Product Card */
.product-card {
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--ease-base);
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.product-card__image-wrap {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--color-gray-50);
}

.product-card__image-wrap > a {
    display: block;
    width: 100%;
    height: 100%;
}

.product-card__image-wrap .product-card__image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ease-slow);
}

.product-card:hover .product-card__image {
    transform: scale(1.04);
}

.product-card__badges {
    position: absolute;
    top: var(--space-2);
    left: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    z-index: 1;
}

.product-card__actions {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    opacity: 0;
    transform: translateX(8px);
    transition: all var(--ease-fast);
    z-index: 1;
}

.product-card:hover .product-card__actions {
    opacity: 1;
    transform: translateX(0);
}

.product-card__action-btn {
    width: 36px;
    height: 36px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-gray-600);
    cursor: pointer;
    transition: all var(--ease-fast);
    box-shadow: var(--shadow-sm);
}

.product-card__action-btn:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.product-card__action-btn.wishlist-btn:hover {
    background: var(--color-danger-light);
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.product-card__body {
    padding: var(--space-4);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.product-card__category {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: var(--font-medium);
}

.product-card__title {
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-900);
    line-height: var(--leading-tight);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-card__title a {
    color: inherit;
    text-decoration: none;
}

.product-card__title a:hover {
    color: var(--color-primary);
    text-decoration: none;
}

.product-card__rating {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.product-card__price {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
    margin-top: auto;
    padding-top: var(--space-2);
}

.product-card__price-current {
    font-size: var(--text-lg);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
}

.product-card__price-original {
    font-size: var(--text-sm);
    color: var(--color-gray-400);
    text-decoration: line-through;
}

.product-card__footer {
    padding: 0 var(--space-4) var(--space-4);
}

/* Star Rating */
.stars {
    display: inline-flex;
    gap: 2px;
    color: var(--color-warning);
}

.stars i {
    width: 14px;
    height: 14px;
}

.star-empty {
    color: var(--color-gray-300);
}

/* Badges */
.badge-sale {
    background: var(--color-danger);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.badge-new {
    background: var(--color-success);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.badge-hot {
    background: var(--color-warning);
    color: var(--color-white);
    font-size: var(--text-xs);
    font-weight: var(--font-bold);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

/* Product Detail Page */
.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: start;
}

.product-gallery {
    position: sticky;
    top: calc(var(--header-h) + var(--space-4));
}

.product-gallery__main {
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
    margin-bottom: var(--space-4);
}

.product-gallery__main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ease-slow);
}

.product-gallery__thumbs {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--space-2);
}

.product-gallery__thumb {
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
    border: 2px solid var(--color-gray-200);
    overflow: hidden;
    cursor: pointer;
    transition: border-color var(--ease-fast);
    background: var(--color-gray-50);
}

.product-gallery__thumb.active {
    border-color: var(--color-primary);
}

.product-gallery__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-info {}

.product-info__category {
    font-size: var(--text-sm);
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.product-info__title {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
    line-height: var(--leading-tight);
    margin-bottom: var(--space-4);
}

.product-info__price {
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.product-info__price-current {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--color-gray-900);
}

.product-info__price-original {
    font-size: var(--text-xl);
    color: var(--color-gray-400);
    text-decoration: line-through;
}

.product-info__price-discount {
    font-size: var(--text-sm);
    font-weight: var(--font-bold);
    color: var(--color-danger);
    background: var(--color-danger-light);
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
}

/* Variant Selector */
.variant-group {
    margin-bottom: var(--space-6);
}

.variant-group__label {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2);
}

.variant-group__options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.variant-option {
    padding: var(--space-1) var(--space-4);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--ease-fast);
    color: var(--color-gray-700);
    background: var(--color-white);
}

.variant-option:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.variant-option.active {
    border-color: var(--color-primary);
    background: var(--color-primary);
    color: var(--color-white);
}

.variant-option.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    text-decoration: line-through;
}

/* Variant availability states */
.variant-option[data-availability="unavailable"] {
    opacity: 0.35;
    cursor: not-allowed;
    position: relative;
    overflow: hidden;
}
.variant-option[data-availability="unavailable"]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -4px;
    right: -4px;
    height: 1px;
    background: currentColor;
    transform: rotate(-12deg);
    opacity: 0.6;
}
.variant-option[data-availability="unavailable"]:hover {
    border-color: var(--color-gray-200);
    color: var(--color-gray-700);
}
.variant-option[data-availability="out-of-stock"] {
    opacity: 0.55;
    color: var(--color-gray-400);
    position: relative;
}
.variant-option[data-availability="out-of-stock"]::after {
    content: '';
    position: absolute;
    top: 50%;
    left: -4px;
    right: -4px;
    height: 1px;
    background: currentColor;
    opacity: 0.5;
}
.color-swatch[data-availability="unavailable"] {
    opacity: 0.3;
    cursor: not-allowed;
    position: relative;
}
.color-swatch[data-availability="unavailable"]::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 50%;
    background: repeating-linear-gradient(
        -45deg,
        transparent,
        transparent 3px,
        rgba(120,120,120,0.4) 3px,
        rgba(120,120,120,0.4) 4px
    );
}
.color-swatch[data-availability="unavailable"]:hover {
    border-color: var(--color-gray-200);
    box-shadow: none;
}
.color-swatch[data-availability="out-of-stock"] {
    opacity: 0.45;
}

/* Color Swatches */
.color-swatch {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-gray-200);
    cursor: pointer;
    transition: all var(--ease-fast);
    position: relative;
}

.color-swatch:hover, .color-swatch.active {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-white), 0 0 0 4px var(--color-primary);
}

/* Quantity Selector */
.qty-selector { display: inline-flex; align-items: center; border: 1px solid var(--color-gray-300); border-radius: var(--radius-md); overflow: hidden; background: var(--color-white) }
.qty-btn { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; color: var(--color-gray-600); background: var(--color-gray-50); border: none; cursor: pointer; transition: background var(--ease-fast); flex-shrink: 0 }
.qty-btn:hover { background: var(--color-gray-100); color: var(--color-gray-900) }
.qty-btn:disabled { opacity: 0.4; cursor: not-allowed }
.qty-input { width: 52px; height: 36px; padding: 0; border: none; border-left: 1px solid var(--color-gray-200); border-right: 1px solid var(--color-gray-200); text-align: center; font-size: var(--text-sm); font-weight: var(--font-semibold); color: var(--color-gray-900); -moz-appearance: textfield; outline: none }
.qty-input::-webkit-outer-spin-button, .qty-input::-webkit-inner-spin-button { -webkit-appearance: none }

/* Product Tabs */
.product-tabs {
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    gap: 0;
    margin-bottom: var(--space-8);
}

.product-tab {
    padding: var(--space-4) var(--space-8);
    border-bottom: 2px solid transparent;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--color-gray-500);
    cursor: pointer;
    transition: all var(--ease-fast);
    margin-bottom: -1px;
}

.product-tab:hover {
    color: var(--color-gray-900);
}

.product-tab.active {
    border-bottom-color: var(--color-primary);
    color: var(--color-primary);
}

/* Reviews */
.review-card {
    padding: var(--space-6);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
}

.review-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-2);
}

.review-card__author {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.review-card__avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-bold);
    color: var(--color-primary);
    font-size: var(--text-sm);
}

.review-card__name {
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    font-size: var(--text-sm);
}

.review-card__date {
    font-size: var(--text-xs);
    color: var(--color-gray-500);
}

.review-card__body {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
    line-height: var(--leading-relaxed);
}

/* Product List View */
.product-list-item {
    display: grid;
    grid-template-columns: 140px 1fr auto;
    gap: var(--space-6);
    padding: var(--space-6);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-4);
    background: var(--color-white);
    transition: all var(--ease-fast);
}

.product-list-item:hover {
    border-color: var(--color-gray-300);
    box-shadow: var(--shadow-sm);
}

.product-list-item__image {
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-gray-50);
}

/* Filters */
.filter-sidebar {
    width: 260px;
    flex-shrink: 0;
}

.filter-group {
    border-bottom: 1px solid var(--color-gray-200);
    padding: var(--space-6) 0;
}

.filter-group:last-child {
    border-bottom: none;
}

.filter-group__title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--color-gray-900);
    margin-bottom: var(--space-4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) 0;
    cursor: pointer;
}

.filter-option input[type="checkbox"] {
    accent-color: var(--color-primary);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.filter-option__label {
    font-size: var(--text-sm);
    color: var(--color-gray-700);
}

.filter-option__count {
    font-size: var(--text-xs);
    color: var(--color-gray-400);
    margin-left: auto;
}

/* Price Range */
.price-range {
    padding: var(--space-2) 0;
}

.price-range input[type="range"] {
    width: 100%;
    accent-color: var(--color-primary);
}

/* Responsive */
@media (max-width: 1024px) {
    .product-grid-4 { grid-template-columns: repeat(3, 1fr); }
    .product-detail { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
}

@media (max-width: 768px) {
    .product-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
    .product-grid-3, .product-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .product-gallery__thumbs { grid-template-columns: repeat(4, 1fr); }
    .product-list-item { grid-template-columns: 100px 1fr; }
    .filter-sidebar { width: 100%; }
}

@media (max-width: 480px) {
    .product-grid { grid-template-columns: 1fr; }
    .product-grid-2 { grid-template-columns: 1fr; }
}

/* ============================================
   PRODUCT LISTING FILTER SYSTEM (Phase 15)
   ============================================ */

.products-page {
    display: grid;
    grid-template-columns: minmax(260px, 300px) minmax(0, 1fr);
    gap: var(--space-6);
    align-items: start;
}

.products-main {
    min-width: 0;
}

.products-toolbar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
}

.products-toolbar__search {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex: 1;
    min-width: 0;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    padding: 0 var(--space-3);
    color: var(--color-text-muted);
}

.products-toolbar__search input {
    width: 100%;
    min-height: 0;
    padding: 0;
    border: none;
    outline: none;
    background: transparent;
    color: var(--color-text);
    font-size: var(--text-sm);
}

.products-toolbar__search:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.products-toolbar__controls {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-left: auto;
}

.products-sort-wrap {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.products-sort-label {
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    white-space: nowrap;
}

.products-sort {
    height: 42px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0 var(--space-8) 0 var(--space-3);
    font-size: var(--text-sm);
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%2364748b' d='M4.22 5.97a.75.75 0 0 1 1.06-.03L8 8.5l2.72-2.56a.75.75 0 1 1 1.03 1.09l-3.24 3.05a.75.75 0 0 1-1.03 0L4.25 7.03a.75.75 0 0 1-.03-1.06Z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

.products-sort:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.view-toggle {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 3px;
}

.view-toggle-btn {
    width: 34px;
    height: 34px;
    border: 0;
    background: transparent;
    color: var(--color-text-muted);
    border-radius: calc(var(--radius-md) - 2px);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--ease-fast);
}

.view-toggle-btn:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

.view-toggle-btn.active {
    color: var(--color-primary);
    background: var(--color-surface);
    box-shadow: var(--shadow-sm);
}

.filter-sidebar {
    position: sticky;
    top: calc(var(--header-h) + var(--space-3));
    height: calc(100vh - var(--header-h) - var(--space-6));
    height: calc(100svh - var(--header-h) - var(--space-6));
    max-height: calc(100vh - var(--header-h) - var(--space-6));
    max-height: calc(100svh - var(--header-h) - var(--space-6));
    min-height: 380px;
    width: 100%;
    flex-shrink: 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-self: start;
}

.filter-sidebar__header {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-surface);
}

.filter-sidebar__header h2 {
    margin: 0;
    font-size: var(--text-md);
    color: var(--color-text);
    font-weight: var(--font-semibold);
}

.filter-sidebar__close {
    width: 34px;
    height: 34px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--color-text-muted);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.filter-sidebar__body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
    padding: 0 var(--space-3) var(--space-2);
    overscroll-behavior: contain;
    scrollbar-gutter: stable;
}

.filter-sidebar__footer {
    display: none;
    gap: var(--space-2);
    padding: var(--space-3);
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.filter-sidebar__footer .btn {
    flex: 1;
}

.filter-section {
    border-bottom: 1px solid var(--color-border-light);
    padding: 0;
    margin: 0;
}

.filter-section:last-child {
    border-bottom: none;
}

.filter-section__trigger {
    width: 100%;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--space-2) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--color-text);
    font-weight: var(--font-semibold);
    font-size: var(--text-sm);
}

.filter-section__trigger i {
    transition: transform var(--ease-base);
}

.filter-section.is-open .filter-section__trigger i {
    transform: rotate(180deg);
}

.filter-section__content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--ease-slow), padding-bottom var(--ease-base);
    display: grid;
    gap: var(--space-1);
    padding-bottom: 0;
}

.filter-section.is-open .filter-section__content {
    padding-bottom: var(--space-3);
}

.filter-check {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr) auto;
    gap: var(--space-1);
    align-items: center;
    cursor: pointer;
    color: var(--color-text);
    font-size: var(--text-sm);
    padding: 2px 0;
    position: relative;
}

.filter-check--child {
    padding-left: var(--space-4);
}

.filter-check input {
    position: absolute;
    top: 2px;
    left: 0;
    width: 18px;
    height: 18px;
    margin: 0;
    opacity: 0;
    pointer-events: none;
}

.filter-check__box {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--color-border);
    border-radius: 5px;
    background: var(--color-surface);
    display: inline-block;
    position: relative;
    transition: all var(--ease-fast);
}

.filter-check--radio .filter-check__box {
    border-radius: var(--radius-full);
}

.filter-check input:checked + .filter-check__box {
    border-color: var(--color-primary);
    background: var(--color-primary);
}

.filter-check input:checked + .filter-check__box::after {
    content: '';
    position: absolute;
    left: 50%;
    top: 50%;
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: #fff;
    transform: translate(-50%, -50%);
}

.filter-check__label {
    color: var(--color-text);
}

.filter-check--child .filter-check__label {
    color: var(--color-text-muted);
}

.filter-check input:checked ~ .filter-check__label {
    color: var(--color-primary);
    font-weight: var(--font-semibold);
}

.filter-check__count {
    color: var(--color-text-light);
    font-size: var(--text-xs);
}

.filter-category-list {
    display: grid;
    gap: 2px;
    max-height: 288px;
    overflow-y: auto;
    overscroll-behavior-y: contain;
    padding-right: 2px;
}

.filter-category-list .category-row--extra {
    display: none;
}

.filter-category-list.is-expanded .category-row--extra {
    display: grid;
}

.filter-category-list.is-expanded {
    max-height: 288px;
}

.filter-show-more {
    margin-top: var(--space-1);
    padding: var(--space-1) 0;
    border: none;
    background: transparent;
    color: var(--color-primary);
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-align: left;
    cursor: pointer;
}

.filter-show-more:hover {
    color: var(--color-primary-dark);
}

.filter-field {
    display: grid;
    gap: var(--space-1);
}

.filter-field__label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.filter-input {
    width: 100%;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0 var(--space-3);
    font-size: var(--text-sm);
}

.filter-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 16%, transparent);
}

.price-range-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
}

.products-results {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    padding: var(--space-4);
}

.products-results__meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.products-results__count {
    margin: 0;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.filter-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: var(--space-2);
}

.filter-chip {
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    color: var(--color-text);
    border-radius: var(--radius-full);
    padding: 6px var(--space-3);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: all var(--ease-fast);
}

.filter-chip:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-chip--clear {
    background: transparent;
}

.product-grid {
    display: grid;
    gap: var(--space-4);
}

.product-grid--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.product-grid--list {
    grid-template-columns: 1fr;
    gap: var(--space-3);
}

.product-grid--list .product-card {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: stretch;
}

.product-grid--list .product-card__image-wrap {
    height: 100%;
}

.product-grid--list .product-card__body {
    padding: var(--space-4) var(--space-5);
}

.products-pagination {
    margin-top: var(--space-6);
    display: flex;
    justify-content: center;
}

.mobile-filter-btn {
    display: none;
}

.filter-overlay {
    display: none;
}

@media (max-width: 1200px) {
    .product-grid--4 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 1024px) {
    .filter-sidebar {
        display: flex;
    }

    .mobile-filter-btn {
        display: none;
    }
}

@media (max-width: 992px) {
    .products-page {
        grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
        gap: var(--space-4);
    }

    .product-grid--4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .products-page {
        grid-template-columns: 1fr;
    }

    .products-toolbar {
        flex-wrap: wrap;
    }

    .mobile-filter-btn {
        display: inline-flex;
    }

    .products-toolbar__search {
        order: 3;
        width: 100%;
        flex-basis: 100%;
    }

    .products-toolbar__controls {
        margin-left: 0;
        width: 100%;
        justify-content: space-between;
    }

    .filter-sidebar {
        position: fixed;
        inset: 0;
        z-index: 200;
        display: flex;
        height: 100%;
        max-height: none;
        border-radius: 0;
        border: none;
        transform: translateY(100%);
        transition: transform var(--ease-slow);
        top: 0;
    }

    .filter-sidebar--open {
        transform: translateY(0);
    }

    .filter-sidebar__header {
        background: var(--color-text);
        color: #fff;
        border-bottom-color: color-mix(in srgb, #fff 20%, transparent);
        padding: var(--space-4) var(--space-4);
    }

    .filter-sidebar__header h2 {
        color: #fff;
    }

    .filter-sidebar__close {
        display: inline-flex;
        border-color: color-mix(in srgb, #fff 24%, transparent);
        color: #fff;
    }

    .filter-sidebar__footer {
        display: flex;
        position: sticky;
        bottom: 0;
        background: var(--color-surface);
    }

    .filter-overlay {
        display: block;
        position: fixed;
        inset: 0;
        z-index: 190;
        background: rgba(2, 6, 23, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--ease-base), visibility var(--ease-base);
    }

    .filter-overlay--visible {
        opacity: 1;
        visibility: visible;
    }

    .products-results__meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .filter-chips {
        justify-content: flex-start;
    }

    .product-grid--4,
    .product-grid--2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: var(--space-3);
    }

    .product-grid--list .product-card {
        grid-template-columns: 120px minmax(0, 1fr);
    }
}

@media (max-width: 520px) {
    .products-sort-label {
        display: none;
    }

    .product-grid--4,
    .product-grid--2 {
        grid-template-columns: 1fr;
    }

    .view-toggle {
        margin-left: auto;
    }
}

/* ============================================
   RESPONSIVE POLISH (Phase 21)
   ============================================ */

.product-gallery-main img,
.product-gallery-thumb img,
.sticky-cart-bar__media {
    width: 100%;
    height: auto;
    object-fit: cover;
}

.product-card__image-wrap .product-card__image {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    max-height: none;
}

.product-detail-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 420px;
    gap: var(--space-10);
    align-items: start;
}

.product-detail-info,
.product-gallery-shell {
    min-width: 0;
    z-index: 2;
}

.product-gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: var(--space-2);
}

.product-gallery-thumb {
    min-width: 0;
}

.product-detail-purchase {
    display: flex;
    gap: var(--space-3);
}

.product-detail-actions {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.product-detail-actions .btn {
    min-height: 44px;
}

.related-products__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-4);
}

#reviews {
    display: grid;
    grid-template-columns: 200px minmax(0, 1fr);
    gap: var(--space-8);
}

@media (max-width: 1024px) {
    .product-grid--4,
    .product-grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .product-detail-layout {
        grid-template-columns: minmax(0, 1fr) 380px;
        gap: var(--space-6);
    }

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

@media (max-width: 768px) {
    .products-page {
        grid-template-columns: 1fr;
    }

    .product-grid--4,
    .product-grid-4,
    .product-grid--2 {
        grid-template-columns: 1fr;
        gap: var(--space-3);
    }

    .product-detail-layout {
        grid-template-columns: 1fr !important;
        gap: var(--space-5);
    }

    .product-detail-info,
    .product-gallery-shell {
        position: static !important;
        top: auto !important;
    }

    .product-gallery-thumbs {
        display: flex !important;
        grid-template-columns: none !important;
        overflow-x: auto;
        overscroll-behavior-x: contain;
        -webkit-overflow-scrolling: touch;
        scroll-snap-type: x proximity;
        padding-bottom: var(--space-1);
    }

    .product-gallery-thumb {
        flex: 0 0 72px;
        scroll-snap-align: start;
    }

    .product-detail-title {
        font-size: var(--text-2xl) !important;
    }

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

    .product-detail-purchase .qty-selector,
    .product-detail-purchase .btn {
        width: 100%;
    }

    .product-detail-usp {
        grid-template-columns: 1fr !important;
        text-align: left !important;
    }

    .product-detail-tabs-wrap {
        margin-top: var(--space-8) !important;
    }

    .sticky-cart-bar {
        transform: translateY(0) !important;
    }

    .sticky-cart-bar__inner {
        gap: var(--space-3);
    }

    .sticky-cart-bar__meta {
        min-width: 0;
    }

    .sticky-cart-bar__title {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .sticky-cart-bar__btn {
        min-width: 0 !important;
        height: 44px;
        padding-inline: var(--space-4);
    }

    .product-detail-form {
        padding-bottom: calc(92px + env(safe-area-inset-bottom));
    }

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

    #reviews {
        grid-template-columns: 1fr !important;
        gap: var(--space-5) !important;
    }
}

@media (max-width: 480px) {
    .sticky-cart-bar__inner {
        gap: var(--space-2);
    }

    .sticky-cart-bar__media {
        display: none;
    }

    .sticky-cart-bar__btn {
        padding-inline: var(--space-3);
    }

    .related-products__grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   PRODUCT GALLERY PRO + RELATED SWIPER
   ============================================ */

.product-gallery-shell--pro {
    min-width: 0;
}

.product-gallery-main-wrap {
    position: relative;
    margin-bottom: var(--space-3);
}

.product-gallery-main-swiper {
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-xl);
    overflow: hidden;
    border: 1px solid var(--color-gray-200);
    background: var(--color-gray-50);
}

.product-gallery-main-swiper .swiper-slide {
    display: flex;
}

.product-gallery-zoom-stage {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
    cursor: zoom-in;
    background: var(--color-gray-50);
}

.product-gallery-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 140ms ease;
    transform-origin: 50% 50%;
}

.product-gallery-zoom-stage.is-zooming .product-gallery-main-image {
    will-change: transform;
}

.product-gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid var(--color-gray-200);
    background: color-mix(in srgb, var(--color-white) 92%, transparent);
    color: var(--color-gray-700);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    box-shadow: var(--shadow-sm);
    transition: all var(--ease-fast);
}

.product-gallery-nav:hover {
    background: var(--color-white);
    border-color: var(--color-gray-300);
    color: var(--color-gray-900);
}

.product-gallery-nav--prev {
    left: var(--space-2);
}

.product-gallery-nav--next {
    right: var(--space-2);
}

.product-gallery-zoom-btn {
    position: absolute;
    right: var(--space-2);
    bottom: var(--space-2);
    border: 1px solid var(--color-gray-200);
    background: color-mix(in srgb, var(--color-white) 94%, transparent);
    color: var(--color-gray-800);
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 6px 12px;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    z-index: 3;
    transition: all var(--ease-fast);
}

.product-gallery-zoom-btn:hover {
    background: var(--color-white);
    border-color: var(--color-gray-300);
}

.product-gallery-thumbs-swiper {
    padding: 2px;
}

.product-gallery-thumb-btn {
    border: 2px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--color-gray-50);
    padding: 0;
    aspect-ratio: 1 / 1;
    transition: border-color var(--ease-fast), transform var(--ease-fast);
}

.product-gallery-thumb-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-gallery-thumb-btn.is-active {
    border-color: var(--color-primary);
}

.product-gallery-thumb-btn:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.product-gallery-lightbox {
    position: fixed;
    inset: 0;
    z-index: 2147483600;
    isolation: isolate;
    background: rgba(10, 14, 23, 0.95);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--ease-base), visibility var(--ease-base);
}

.product-gallery-lightbox.is-open {
    opacity: 1;
    visibility: visible;
}

.product-gallery-lightbox-swiper {
    width: min(92vw, 1240px);
    height: min(88vh, 920px);
    margin-inline: auto;
    margin-top: min(6vh, 48px);
}

.product-gallery-lightbox-swiper .swiper-slide {
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-gallery-lightbox-swiper .swiper-zoom-container img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.product-gallery-lightbox__close {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 44px;
    height: 44px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.product-gallery-lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    background: rgba(255, 255, 255, 0.08);
    color: var(--color-white);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
}

.product-gallery-lightbox__nav--prev {
    left: var(--space-5);
}

.product-gallery-lightbox__nav--next {
    right: var(--space-5);
}

.related-products__header {
    align-items: center;
}

.related-products__controls {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.related-products__nav {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
    color: var(--color-gray-700);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--ease-fast);
}

.related-products__nav:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.related-products-swiper {
    overflow: visible;
}

.related-products__slide {
    height: auto;
}

.related-products__slide .product-card {
    height: 100%;
}

@media (max-width: 768px) {
    .product-gallery-nav {
        width: 34px;
        height: 34px;
    }

    .product-gallery-lightbox-swiper {
        width: 96vw;
        height: min(82vh, 760px);
        margin-top: 9vh;
    }

    .product-gallery-lightbox__nav--prev {
        left: var(--space-2);
    }

    .product-gallery-lightbox__nav--next {
        right: var(--space-2);
    }
}