.layered-nav {
    padding: 20px;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 10px 35px rgba(27, 23, 20, .05);
}

.filter-toggle,.filter-backdrop,.filter-title button { display: none; }
.filter-title > span { display: flex; align-items: center; gap: 14px; }

.layered-nav summary {
    align-items: center;
    gap: 10px;
    font-weight: 700;
    cursor: pointer;
    list-style: none;
}

.layered-nav summary::-webkit-details-marker { display: none; }
.layered-nav summary::after {
    content: '+';
    display: grid;
    place-items: center;
    width: 22px;
    height: 22px;
    margin-left: auto;
    border-radius: 50%;
    background: var(--paper);
    font-size: 16px;
}
.layered-nav details[open] summary::after { content: '−'; }
.layered-nav summary small { order: 2; color: var(--muted); font-size: 10px; font-weight: 500; }
.facet-options { max-height: 260px; gap: 6px; padding-right: 4px; }
.facet-options .facet-option {
    position: relative;
    display: grid;
    grid-template-columns: 20px 1fr auto;
    gap: 10px;
    align-items: center;
    min-height: 36px;
    padding: 6px 8px;
    border-radius: 9px;
    font-size: 14px;
    cursor: pointer;
    transition: .18s;
}
.facet-option:hover { background: var(--paper); }
.facet-option input { position: absolute; opacity: 0; pointer-events: none; }
.facet-check {
    display: grid;
    place-items: center;
    width: 18px;
    height: 18px;
    border: 1.5px solid #aaa39c;
    border-radius: 5px;
    background: #fff;
    transition: .18s;
}
.facet-option input:focus-visible + .facet-check { outline: 2px solid var(--orange-dark); outline-offset: 2px; }
.facet-option input:checked + .facet-check { border-color: var(--orange-dark); background: var(--orange-dark); }
.facet-option input:checked + .facet-check::after { content: '✓'; color: #fff; font-size: 12px; font-style: normal; font-weight: 800; }
.facet-option:has(input:checked) { background: #fff4e8; color: var(--ink); font-weight: 600; }
.colour-facet-options .facet-option { grid-template-columns: 20px 24px 1fr auto; }
.colour-facet-options .colour-swatch { width: 18px; height: 18px; }

.price-filter { padding-bottom: 4px; }
.price-range-control { padding: 14px 4px 10px; }
.price-range-values { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px; }
.price-range-values output { padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--paper); font-size: 13px; font-weight: 750; }
.price-range-values output:last-child { text-align: right; }
.price-range-values span { color: var(--muted); font-size: 11px; }
.price-range-sliders { position: relative; height: 32px; margin-top: 9px; }
.price-range-sliders::before { content: ''; position: absolute; top: 14px; right: 0; left: 0; height: 5px; border-radius: 999px; background: linear-gradient(to right, #ddd6cf 0 var(--price-from), var(--orange-dark) var(--price-from) var(--price-to), #ddd6cf var(--price-to) 100%); }
.price-range-sliders input { position: absolute; inset: 0; width: 100%; height: 32px; margin: 0; appearance: none; background: transparent; pointer-events: none; }
.price-range-sliders input::-webkit-slider-runnable-track { height: 5px; background: transparent; }
.price-range-sliders input::-webkit-slider-thumb { width: 20px; height: 20px; margin-top: -7.5px; appearance: none; border: 3px solid #fff; border-radius: 50%; background: var(--orange-dark); box-shadow: 0 0 0 1px var(--orange-dark), 0 2px 7px #38210f40; cursor: grab; pointer-events: auto; }
.price-range-sliders input::-moz-range-track { height: 5px; background: transparent; }
.price-range-sliders input::-moz-range-thumb { width: 14px; height: 14px; border: 3px solid #fff; border-radius: 50%; background: var(--orange-dark); box-shadow: 0 0 0 1px var(--orange-dark), 0 2px 7px #38210f40; cursor: grab; pointer-events: auto; }
.price-range-control > p { margin: 4px 0 0; color: var(--muted); font-size: 11px; line-height: 1.45; }

@media (max-width: 760px) {
    .catalogue-shell { gap: 18px; padding-top: 22px; }
    .filter-toggle {
        display: inline-flex;
        align-items: center;
        justify-self: start;
        gap: 8px;
        width: auto;
        min-height: 42px;
        padding: 9px 13px;
        border: 1.5px solid var(--orange-dark);
        border-radius: 999px;
        background: #fffaf4;
        color: var(--ink);
        font: inherit;
        font-weight: 700;
        cursor: pointer;
    }
    .filter-toggle svg { width: 19px; height: 19px; fill: none; stroke: var(--orange-dark); stroke-width: 1.8; stroke-linecap: round; }
    .filter-toggle-action { padding-left: 8px; border-left: 1px solid #e8c9a7; color: var(--orange-dark); font-size: 12px; }
    .filter-backdrop:not([hidden]) { position: fixed; inset: 0; z-index: 69; display: block; width: 100%; border: 0; background: #17171780; backdrop-filter: blur(2px); }
    .layered-nav {
        position: fixed;
        z-index: 70;
        inset: auto 0 0;
        max-height: min(82vh, 720px);
        padding: 20px 20px 28px;
        overflow-y: auto;
        border: 0;
        border-radius: 20px 20px 0 0;
        box-shadow: 0 -18px 55px #17171730;
        transform: translateY(105%);
        visibility: hidden;
        transition: transform .24s ease, visibility .24s;
    }
    .layered-nav.is-open { transform: none; visibility: visible; }
    .layered-nav .filter-title { position: sticky; z-index: 2; top: -20px; margin-inline: -4px; padding: 18px 4px 16px; background: #fff; border-bottom: 1px solid var(--line); }
    .layered-nav .filter-title strong { font-size: 20px; }
    .filter-title button { display: grid; place-items: center; width: 34px; height: 34px; padding: 0; border: 1px solid var(--line); border-radius: 50%; background: #fff; color: var(--ink); font-size: 25px; line-height: 1; cursor: pointer; }
    .layered-nav > .button { width: 100%; margin-top: 8px; }
}