/* =========================================================
MOBILE FILTER SHEET (shared)

Every page with filters uses the same mobile pattern: a
toolbar row with a "Filters" button, and the filters open in
a bottom sheet with collapsible sections, chip options and a
"Show N results" footer (layout modelled on the Caesarstone
colour catalogue).

Used by:
- catalogue pages (products, natural-stone, quartz, granite,
  terrazzo, sintered-stone): markup is written in the page,
  wrapper is <aside class="filters filter-sheet">.
- portfolio and events: filter-sheet.js builds the sheet from
  the page's <select> filters, which stay as-is on desktop.

The wrapper gets .is-open while the sheet is showing.
========================================================= */

.filter-toggle,
.filter-backdrop,
.filter-panel-head,
.filter-apply,
.filter-group-icon,
.filter-group-chevron,
.filter-group-count,
.filter-sheet--generated {
    display: none;
}

@media (max-width: 820px) {
/* Lock html only: hiding body overflow as well turns body into its
   own scroll box and the sticky header scrolls out of view. */
html.filters-locked {
    overflow: hidden;
}

/* ---------- toolbar row ---------- */

.filter-bar {
    display: flex;
    align-items: center;
    gap: 20px;
}

.filter-toggle {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    gap: 8px;

    height: 44px;
    margin: 0 0 0 auto;
    padding: 0;

    border: 0;
    background: none;
    color: var(--blue-ink);

    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 400;
    letter-spacing: 0;
    text-transform: none;

    cursor: pointer;
}

.filter-toggle-icon {
    width: 22px;
    height: 22px;
}

/* Pages without a search box show the result count on the left. */
.filter-sheet--generated {
    display: block;

    margin-bottom: 28px;
}

.filter-sheet--generated .filter-bar {
    padding-bottom: 6px;

    border-bottom: 1px solid var(--blue-line);
}

.filter-bar-count {
    color: var(--blue-ink);

    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* The page's own dropdown filters are replaced by the sheet. */
.has-filter-sheet {
    display: none !important;
}

/* ---------- sheet ---------- */

.filter-backdrop {
    display: block;

    position: fixed;
    inset: 0;
    z-index: 1000;

    background: rgba(6, 62, 82, 0.5);

    opacity: 0;
    visibility: hidden;

    transition:
        opacity 0.3s ease,
        visibility 0s linear 0.3s;
}

.filter-panel {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 1001;

    display: flex;
    flex-direction: column;

    max-height: calc(100vh - 72px);
    max-height: calc(100dvh - 72px);

    border-radius: 16px 16px 0 0;
    background: var(--white);
    box-shadow: 0 -12px 40px rgba(6, 62, 82, 0.18);

    text-align: left;

    transform: translateY(100%);
    visibility: hidden;

    transition:
        transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1),
        visibility 0s linear 0.35s;
}

.filter-sheet.is-open .filter-backdrop {
    opacity: 1;
    visibility: visible;

    transition: opacity 0.3s ease;
}

.filter-sheet.is-open .filter-panel {
    transform: none;
    visibility: visible;

    transition: transform 0.35s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.filter-panel-head {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;

    position: relative;

    padding: 26px 64px 14px;
}

.filter-panel-title {
    margin: 0;

    color: var(--blue-ink);

    font-family: var(--font-display);
    font-size: 26px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0;
    text-transform: none;
}

.filter-close {
    display: grid;
    place-items: center;

    position: absolute;
    top: 14px;
    right: 12px;

    width: 44px;
    height: 44px;
    padding: 0;

    border: 0;
    background: none;
    color: var(--blue-ink);

    cursor: pointer;
}

.filter-close svg {
    width: 24px;
    height: 24px;
}

.filter-panel-body {
    flex: 1;
    min-height: 0;

    padding: 0 20px;

    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
}

/* ---------- collapsible sections ---------- */

.filter-panel .filter-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;

    margin: 0;
    padding: 0 0 24px;

    border-top: 0;
    border-bottom: 1px solid var(--blue-line);
}

.filter-panel .filter-group:last-child {
    border-bottom: 0;
}

.filter-panel .filter-group h4 {
    flex: 0 0 100%;
    margin: 0;
}

.filter-panel .filter-group-toggle {
    display: flex;
    align-items: center;
    gap: 12px;

    width: 100%;
    min-height: 66px;
    padding: 0;

    border: 0;
    background: none;
    color: var(--blue-ink);

    font-family: var(--font-body);
    font-size: 17px;
    font-weight: 400;
    letter-spacing: 0;
    text-align: left;
    text-transform: none;

    cursor: pointer;
    pointer-events: auto;
}

.filter-group-icon {
    display: block;
    flex-shrink: 0;

    width: 22px;
    height: 22px;
}

.filter-group-count {
    display: inline;
}

.filter-group-chevron {
    display: block;
    flex-shrink: 0;

    width: 18px;
    height: 18px;
    margin-left: auto;

    color: var(--blue);

    transition: transform 0.25s ease;
}

.filter-panel .filter-group.is-collapsed {
    padding-bottom: 0;
}

.filter-panel .filter-group.is-collapsed label,
.filter-panel .filter-group.is-collapsed .filter-chip {
    display: none;
}

.filter-panel .filter-group.is-collapsed .filter-group-chevron {
    transform: rotate(180deg);
}

/* ---------- chip options ---------- */

/* Catalogue chips are checkbox labels; generated chips are buttons. */
.filter-panel .filter-group label,
.filter-panel .filter-chip {
    display: inline-flex;
    align-items: center;

    position: relative;

    min-height: 40px;
    margin: 0;
    padding: 8px 18px;

    border: 1px solid var(--blue-line);
    border-radius: 0;
    background: var(--white);
    color: var(--blue-ink);

    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 400;
    line-height: 1.4;
    letter-spacing: 0;
    text-align: left;
    text-transform: none;

    cursor: pointer;

    transition:
        border-color 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease;
}

.filter-panel .filter-group label:hover {
    color: var(--blue-ink);
}

.filter-panel .filter-group input[type="checkbox"] {
    position: absolute;

    width: 1px;
    height: 1px;

    opacity: 0;
    pointer-events: none;
}

.filter-panel .filter-group label:has(input:checked),
.filter-panel .filter-chip[aria-pressed="true"] {
    border-color: var(--blue);
    background: var(--blue-pale);
    box-shadow: inset 0 0 0 1px var(--blue);
}

.filter-panel .filter-group label:has(input:focus-visible),
.filter-panel .filter-chip:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 2px;
}

/* ---------- footer ---------- */

.filter-panel-foot {
    display: flex;
    flex-shrink: 0;
    gap: 10px;

    padding: 14px 20px calc(14px + env(safe-area-inset-bottom));

    border-top: 1px solid var(--blue-line);
    background: var(--white);
}

.filter-panel .filter-clear {
    flex-shrink: 0;

    width: auto;
    min-width: 0;
    min-height: 52px;
    margin: 0;
    padding: 0 16px;

    border: 1px solid var(--blue-line);
    border-radius: 0;
    background: transparent;
    color: var(--blue-ink);

    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;

    cursor: pointer;
}

.filter-panel .filter-clear:hover {
    background: var(--blue-pale);
    color: var(--blue-ink);
}

.filter-clear-extra {
    display: none;
}

.filter-apply {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    gap: 10px;

    min-height: 52px;
    padding: 0 16px;

    border: 1px solid var(--blue-ink);
    border-radius: 0;
    background: var(--blue-ink);
    color: var(--white);

    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;

    cursor: pointer;
}

.filter-apply svg {
    width: 18px;
    height: 18px;
}
}

@media (max-width: 820px) and (prefers-reduced-motion: reduce) {
.filter-backdrop,
.filter-panel,
.filter-sheet.is-open .filter-backdrop,
.filter-sheet.is-open .filter-panel {
    transition: none;
}
}