/* ============================================
   CATALOG LAYOUT
   ============================================ */

.catalog-layout {
    display: flex;
    gap: var(--space-xl);
    align-items: flex-start;
}

/* ============================================
   SIDEBAR
   ============================================ */

.catalog-sidebar {
    position: sticky;
    top: calc(var(--header-height) + var(--space-xl));
    width: var(--sidebar-width);
    flex-shrink: 0;
    background: var(--color-bg-card);
    border-radius: var(--card-radius);
    padding: var(--space-lg);
    display: none;
    max-height: calc(100vh - var(--header-height) - var(--space-2xl));
    overflow-y: auto;
}

.catalog-sidebar.open {
    display: block;
}

.catalog-sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--color-border);
}

.catalog-sidebar__title {
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
}

.filter-group {
    margin-bottom: var(--space-lg);
}

.filter-group__title {
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
}

.filter-group__options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

/* ============================================
   GRID AREA
   ============================================ */

.catalog-grid {
    flex: 1;
    min-width: 0;
}

.catalog-topbar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.catalog-count {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.catalog-filter-toggle svg {
    vertical-align: -2px;
}

/* ============================================
   LOAD MORE
   ============================================ */

.catalog-load-more {
    text-align: center;
    padding: var(--space-2xl) 0;
}

/* ============================================
   MOBILE: sidebar as slide-over
   ============================================ */

@media (max-width: 767px) {
    .catalog-sidebar {
        position: fixed;
        top: var(--header-height);
        left: 0;
        bottom: 0;
        width: 85%;
        max-width: 320px;
        border-radius: 0;
        z-index: var(--z-overlay);
        transform: translateX(-100%);
        transition: transform var(--transition-base);
        display: block;
        max-height: none;
    }

    .catalog-sidebar.open {
        transform: translateX(0);
    }

    .catalog-sidebar-backdrop {
        position: fixed;
        inset: 0;
        top: var(--header-height);
        background: var(--color-overlay);
        z-index: calc(var(--z-overlay) - 1);
        display: none;
    }

    .catalog-sidebar-backdrop.open {
        display: block;
    }
}

@media (min-width: 768px) {
    .catalog-sidebar {
        display: block;
    }

    .catalog-filter-toggle {
        display: none;
    }
}

/* ============================================
   SINGLE ARTWORK
   ============================================ */

.artwork-detail {
    max-width: 1000px;
    margin: 0 auto;
}

.artwork-detail__image-wrap {
    border-radius: var(--card-radius);
    overflow: hidden;
    background: var(--color-bg-elevated);
    margin-bottom: var(--space-xl);
}

.artwork-detail__image {
    width: 100%;
    height: auto;
}

.artwork-detail__info {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.artwork-detail__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-sm);
}

.artwork-detail__artist {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.artwork-detail__section-title {
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.artwork-detail__palette {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.artwork-detail__color {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: transform var(--transition-fast);
    position: relative;
}

.artwork-detail__color:hover {
    transform: scale(1.15);
}

.artwork-detail__color-tooltip {
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
    white-space: nowrap;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.artwork-detail__color:hover .artwork-detail__color-tooltip {
    opacity: 1;
}

.artwork-detail__source-btn {
    margin-top: var(--space-lg);
}

@media (min-width: 768px) {
    .artwork-detail__info {
        grid-template-columns: 2fr 1fr;
    }

    .artwork-detail__title {
        font-size: var(--text-3xl);
    }
}