.catalog-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 28px;
    align-items: start;
}

.catalog-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--nav-height) + 16px);
}

.sidebar-block {
    background: var(--color-bg);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 18px;
    margin-bottom: 16px;
}

.sidebar-block__title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-secondary);
    margin-bottom: 14px;
}

.sidebar-category {
    display: block;
    padding: 7px 0;
    font-size: 14px;
    color: var(--color-text-secondary);
    transition: color var(--transition);
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-category:last-child { border-bottom: none; }

.sidebar-category:hover,
.sidebar-category.is-active { color: var(--color-primary); }

.sidebar-category.is-active { font-weight: 600; }

.sidebar-subcategory {
    display: block;
    padding: 5px 0 5px 14px;
    font-size: 13px;
    color: var(--color-text-muted);
    transition: color var(--transition);
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-subcategory:last-child { border-bottom: none; }

.sidebar-subcategory:hover,
.sidebar-subcategory.is-active { color: var(--color-primary); }

.catalog-count {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-left: 4px;
}

.price-range {
    display: flex;
    gap: 8px;
    align-items: center;
}

.price-range input { flex: 1; min-width: 0; }

.price-range span {
    color: var(--color-text-muted);
    font-size: 13px;
}

.filter-brand-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 200px;
    overflow-y: auto;
}

.filter-brand-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    cursor: pointer;
}

.filter-brand-label input { accent-color: var(--color-primary); }

.catalog-main {}

.catalog-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}

.catalog-toolbar__info {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.catalog-toolbar__info strong { color: var(--color-text); }

.catalog-sort {
    display: flex;
    align-items: center;
    gap: 8px;
}

.catalog-sort label {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.catalog-sort select {
    padding: 7px 12px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    background: var(--color-bg);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition);
}

.catalog-sort select:focus { border-color: var(--color-primary); }

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.breadcrumbs a {
    color: var(--color-text-muted);
    transition: color var(--transition);
}

.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs span { opacity: 0.5; }

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 48px;
}

.product-detail__img-wrap {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border: 2px solid var(--color-border-light);
}

.product-detail__img {
    max-width: 85%;
    max-height: 85%;
    object-fit: contain;
}

.product-detail__no-img { opacity: 0.15; width: 120px; height: 120px; }
.product-detail__info {}

.product-detail__badges {
    display: flex;
    gap: 8px;
    margin-bottom: 12px;
}

.product-detail__brand {
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}

.product-detail__name {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 8px;
}

.product-detail__art {
    font-size: 13px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.product-detail__prices {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 12px;
}

.product-detail__price { font-size: 32px; font-weight: 800; }

.product-detail__old-price {
    font-size: 18px;
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.product-detail__stock {
    font-size: 13px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.product-detail__stock::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
    flex-shrink: 0;
}

.product-detail__stock--out::before { background: var(--color-error); }

.product-detail__actions {
    display: flex;
    gap: 12px;
    margin-bottom: 28px;
}

.product-detail__actions .btn { flex: 1; }

.product-detail__desc {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: 16px;
}

.product-detail__desc-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 10px;
    color: var(--color-text-secondary);
}

.product-detail__desc p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

@media (max-width: 900px) {
    .catalog-layout { grid-template-columns: 1fr; }
    .catalog-sidebar { position: static; }
    .product-detail { grid-template-columns: 1fr; }
}