/* Products listing & detail */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.products-page {
    background: var(--gray-50);
}

.products-layout {
    display: grid;
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 2rem;
    align-items: start;
}

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

/* Category sidebar / mobile menu */
.products-category-nav {
    position: relative;
}

.products-category-nav__toggle {
    display: none;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.9rem 1rem;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--navy-900);
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    text-align: left;
    -webkit-tap-highlight-color: transparent;
}

.products-category-nav__toggle-label {
    flex-shrink: 0;
}

.products-category-nav__toggle-current {
    flex: 1;
    min-width: 0;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray-600);
    text-align: right;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.products-category-nav__toggle-icon {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--navy-800);
    border-bottom: 2px solid var(--navy-800);
    transform: rotate(45deg);
    transition: transform 0.2s ease;
    flex-shrink: 0;
}

.products-category-nav.is-open .products-category-nav__toggle-icon {
    transform: rotate(-135deg);
    margin-top: 3px;
}

.products-category-nav__panel {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 1.15rem 1rem;
}

.products-category-nav__title {
    margin: 0 0 0.85rem;
    padding: 0 0.35rem;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--gray-500);
}

.products-category-nav__list,
.products-category-nav__sublist {
    list-style: none;
    margin: 0;
    padding: 0;
}

.products-category-nav__list > li + li {
    margin-top: 0.2rem;
}

.products-category-nav__sublist {
    margin: 0.35rem 0 0.5rem;
    padding-left: 0.65rem;
    border-left: 2px solid var(--gray-100);
}

.products-category-nav__sublist li + li {
    margin-top: 0.15rem;
}

.products-category-nav__link {
    display: block;
    padding: 0.55rem 0.65rem;
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.35;
    color: var(--navy-800);
    text-decoration: none;
    border-radius: 6px;
    transition: background 0.15s ease, color 0.15s ease;
}

.products-category-nav__link:hover {
    background: var(--gray-50);
    color: var(--navy-900);
}

.products-category-nav__link.is-active {
    background: rgba(59, 130, 196, 0.12);
    color: var(--navy-900);
    font-weight: 700;
}

.products-category-nav__link.is-parent-active {
    color: var(--navy-900);
    font-weight: 600;
}

.products-category-nav__link--child {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.products-category-nav__link--child.is-active {
    color: var(--navy-900);
}

@media (min-width: 1024px) {
    .products-category-nav__panel {
        position: sticky;
        top: 6rem;
    }
}

@media (max-width: 1023px) {
    .products-layout {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .products-category-nav {
        margin-bottom: 0.25rem;
    }

    .products-category-nav__toggle {
        display: flex;
    }

    .products-category-nav__panel {
        display: none;
        margin-top: 0.5rem;
        max-height: min(60vh, 420px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .products-category-nav.is-open .products-category-nav__panel {
        display: block;
    }

    .products-category-nav__title {
        display: none;
    }
}

.products-toolbar {
    margin-bottom: 1.5rem;
    padding: 1.25rem 1.35rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.products-search {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    align-items: center;
}

.products-search__input {
    flex: 1;
    min-width: 200px;
    padding: 0.7rem 1rem;
    font-size: 0.95rem;
    font-family: inherit;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-sm);
    background: var(--gray-50);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.products-search__input:focus {
    outline: none;
    border-color: var(--blue-400);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(59, 130, 196, 0.15);
}

.filter-chips--products {
    margin-bottom: 1.5rem;
}

.products-results-info {
    margin: 0 0 1.5rem;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--gray-600);
}

.products-grid {
    margin-top: 0.25rem;
}

/* Catalog listing card */
.product-card--listing {
    border-radius: var(--radius-md);
}

.product-card--listing .product-card__body {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 1.25rem 1.2rem 1.35rem;
}

.product-card--listing .product-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    margin-top: auto;
    padding-top: 0.85rem;
    border-top: 1px solid var(--gray-100);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s var(--ease-out);
}

.product-card--listing:hover .product-card__footer {
    border-top-color: var(--gray-200);
}

.product-card__price--prominent {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--navy-900);
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.product-card--listing .product-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    flex-shrink: 0;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-600);
    transition: color 0.2s var(--ease-out);
}

.product-card--listing .product-card__cta-text {
    white-space: nowrap;
}

.product-card--listing .product-card__cta-arrow {
    display: inline-block;
    font-size: 0.9rem;
    line-height: 1;
    transition: transform 0.22s var(--ease-out), color 0.2s var(--ease-out);
}

.product-card--listing:hover .product-card__cta {
    color: var(--navy-800);
}

.product-card--listing:hover .product-card__cta-arrow {
    transform: translateX(4px);
    color: var(--navy-900);
}

.btn--sm {
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
}

.products-pagination nav {
    display: flex;
    justify-content: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.products-pagination nav > * {
    padding: 0.45rem 0.85rem;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--navy-800);
    border: 1px solid var(--gray-200);
    font-size: 0.9rem;
    font-weight: 600;
    background: var(--white);
    transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.products-pagination nav a:hover {
    border-color: var(--blue-300);
    color: var(--navy-900);
}

.products-pagination nav > span,
.products-pagination nav .active {
    background: var(--gradient-brand);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 2px 8px rgba(15, 39, 68, 0.2);
}

/* Product detail */
.product-detail {
    padding: clamp(2rem, 4vw, 3rem) 0 clamp(3rem, 5vw, 4.5rem);
    background: var(--white);
}

.product-detail__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 4vw, 3rem);
    align-items: start;
}

.product-gallery__main {
    aspect-ratio: 1;
    background: linear-gradient(180deg, var(--gray-50), var(--gray-100));
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    box-shadow: var(--shadow-md);
}

.product-gallery__main img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--white);
}

.product-gallery__main--empty {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--navy-600);
    opacity: 0.4;
}

.product-gallery__thumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: 0.85rem;
}

.product-gallery__thumb {
    width: 76px;
    height: 76px;
    padding: 0;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-sm);
    overflow: hidden;
    cursor: pointer;
    background: var(--white);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.product-gallery__thumb:hover {
    border-color: var(--blue-300);
}

.product-gallery__thumb.is-active {
    border-color: var(--navy-900);
    box-shadow: 0 0 0 2px rgba(15, 39, 68, 0.15);
}

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

.product-detail__info {
    padding: 0.5rem 0;
}

.product-detail__category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--blue-500);
    text-decoration: none;
    margin-bottom: 0.65rem;
}

.product-detail__category:hover {
    color: var(--navy-900);
    text-decoration: underline;
}

.product-detail__title {
    margin: 0 0 0.85rem;
    font-size: clamp(1.65rem, 3.5vw, 2.25rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--navy-900);
}

.product-detail__brand {
    margin: 0 0 1.15rem;
    color: var(--gray-600);
    font-size: 0.95rem;
}

.product-detail__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
    padding: 1rem 1.15rem;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-md);
}

.product-detail__price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--navy-900);
    letter-spacing: -0.02em;
}

.stock-badge {
    display: inline-block;
    padding: 0.35rem 0.7rem;
    font-size: 0.78rem;
    font-weight: 700;
    border-radius: 999px;
    letter-spacing: 0.02em;
}

.stock-badge--in_stock {
    background: #dcfce7;
    color: #166534;
}

.stock-badge--out_of_stock {
    background: #fee2e2;
    color: #991b1b;
}

.stock-badge--on_request {
    background: #dbeafe;
    color: #1e40af;
}

.product-detail__excerpt {
    margin: 0 0 1.75rem;
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--gray-600);
}

.product-detail__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.product-detail__section {
    margin-top: clamp(2.5rem, 4vw, 3rem);
    padding-top: clamp(2rem, 3vw, 2.5rem);
    border-top: 1px solid var(--gray-200);
}

.product-detail__section-title {
    margin: 0 0 1.15rem;
    font-size: clamp(1.2rem, 2.5vw, 1.4rem);
    font-weight: 800;
    color: var(--navy-900);
    letter-spacing: -0.02em;
}

.product-detail__section-title::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    margin-top: 0.6rem;
    background: linear-gradient(90deg, var(--blue-500), var(--metallic));
    border-radius: 2px;
}

.product-detail__content,
.product-detail__specs {
    line-height: 1.75;
    color: var(--gray-600);
    font-size: 1rem;
}

.product-detail__specs {
    background: var(--gray-50);
    padding: 1.35rem 1.5rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-200);
}

@media (max-width: 900px) {
    .product-detail__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .products-toolbar {
        padding: 1rem;
    }

    .product-card--listing .product-card__cta {
        font-size: 0.7rem;
    }

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

    .product-detail__actions .btn {
        width: 100%;
        justify-content: center;
    }
}