.catalog-page {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 40px var(--container-px) var(--section-gap);
}

.catalog-page__header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 32px;
}

.catalog-page__title {
    font-size: 40px;
    line-height: 1.1;
    margin-bottom: 8px;
}

.catalog-page__subtitle {
    color: var(--color-text-muted);
}

.catalog-toolbar {
    display: flex;
    gap: 12px;
    align-items: center;
}

.catalog-toolbar__search {
    min-width: 280px;
}

.catalog-toolbar__select {
    min-width: 180px;
}

.catalog-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
    align-items: start;
}

/* sidebar wrapper */
.catalog-sidebar {
    position: sticky;
    top: calc(var(--nav-height) + 20px);
}

/* toggle header */
.catalog-filters__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--color-card-bg);
    border-radius: var(--radius-card) var(--radius-card) 0 0;
    box-shadow: var(--shadow-sm);
}

.catalog-filters__title {
    font-size: 11px;
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.catalog-filters__toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    border-radius: 6px;
    transition: background var(--transition), color var(--transition);
    line-height: 1;
}

.catalog-filters__toggle:hover {
    background: var(--color-border);
    color: var(--color-text);
}

#filtersChevron {
    transition: transform 0.28s ease;
}

/* filters form panel */
.catalog-filters {
    background: var(--color-card-bg);
    border-radius: 0 0 var(--radius-card) var(--radius-card);
    box-shadow: var(--shadow-sm);
    padding: 20px 20px 22px;
    display: grid;
    gap: 18px;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.28s ease, opacity 0.22s ease;
    max-height: 900px;
    opacity: 1;
}

.catalog-filters.is-collapsed {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    opacity: 0;
    pointer-events: none;
}

.catalog-filters__header:has(+ .catalog-filters.is-collapsed) {
    border-radius: var(--radius-card);
}

/* chevron flips when collapsed */
.catalog-filters__toggle[aria-expanded="false"] #filtersChevron {
    transform: rotate(180deg);
}

.catalog-filter--row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.catalog-filter__actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.catalog-results .products-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.pagination {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin-top: 28px;
}

.pagination a {
    min-width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    background: var(--color-card-bg);
    box-shadow: var(--shadow-sm);
}

.pagination a.active {
    background: var(--color-accent);
    color: var(--color-white);
}

@media (max-width: 1080px) {
    .catalog-page__header,
    .catalog-layout {
        display: grid;
        grid-template-columns: 1fr;
    }

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

    .catalog-sidebar {
        position: static;
    }

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

@media (max-width: 640px) {
    .catalog-page {
        padding-inline: 20px;
    }

    .catalog-filter--row,
    .catalog-results .products-grid {
        grid-template-columns: 1fr;
    }

    .catalog-toolbar__search,
    .catalog-toolbar__select {
        min-width: 100%;
    }
}