/* ============================================================
   SIDEBAR-LISTING.CSS — Sidebar + Product Grid Layout
   Used by: curtain_all.html, sheer_all.html
   Vitech Home & Living
   ============================================================ */

/* ============================================================
   LISTING LAYOUT
   ============================================================ */
.listing-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 2.5rem;
    align-items: start;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.listing-sidebar {
    position: sticky;
    top: 90px;
}

.sidebar-title {
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-dark);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-primary);
}

.sidebar-category-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.sidebar-category-link {
    display: block;
    padding: 0.55rem 0.75rem;
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.sidebar-category-link:hover {
    color: var(--color-primary);
    background-color: rgba(76, 183, 197, 0.06);
}

.sidebar-category-link.active {
    color: var(--color-primary-dark);
    background-color: rgba(76, 183, 197, 0.1);
    font-weight: var(--font-weight-semibold);
}

/* ============================================================
   LISTING MAIN
   ============================================================ */
.listing-main {
    min-width: 0;
}

/* ============================================================
   GALLERY STYLES (for product detail pages)
   ============================================================ */
.product-detail-gallery {
    position: sticky;
    top: 90px;
}

.gallery-main {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    background-color: var(--color-bg-section);
    aspect-ratio: 4 / 3;
    margin-bottom: 1rem;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.gallery-thumbnails {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.gallery-thumb {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    border: 2px solid var(--color-border);
    background: none;
    padding: 0;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.gallery-thumb:hover {
    border-color: var(--color-primary);
}

.gallery-thumb.active {
    border-color: var(--color-primary-dark);
}

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

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    .listing-layout {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .listing-sidebar {
        position: static;
    }

    .sidebar-category-list {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.35rem;
    }

    .sidebar-category-link {
        font-size: 0.82rem;
        padding: 0.4rem 0.65rem;
    }

    .product-detail-gallery {
        position: static;
    }
}

@media (max-width: 480px) {
    .gallery-thumb {
        width: 48px;
        height: 48px;
    }
}