/* ════════════════════════════════════════════════════════════════
   SHOP-FILTERS.CSS — Shop Sidebar Filters Component
   Prefix: .shop-filter-form, .sf__
   Theme: maroon (var(--color-primary)) · gold (var(--color-accent)) · white
════════════════════════════════════════════════════════════════ */

/* ── Card shell ──────────────────────────────────────────────── */
.shop-filter-form {
    background: #fff;
    border: 1px solid var(--border, var(--color-border));
    border-radius: var(--r-md, 12px);
    overflow: hidden;
    box-shadow:
        inset 3px 0 0 var(--color-accent),
        0 2px 20px rgba(0,0,0,.06);
    max-width: 100%;
    overflow-x: hidden;
}
[dir="rtl"] .shop-filter-form {
    box-shadow:
        inset -3px 0 0 var(--color-accent),
        0 2px 20px rgba(0,0,0,.06);
}

/* ── Header ──────────────────────────────────────────────────── */
.sf__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-4);
    border-bottom: 1px solid var(--border, var(--color-border));
    background: linear-gradient(to bottom, rgba(var(--color-primary-rgb), .05), transparent);
}
.sf__title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-weight: 700;
    font-size: .82rem;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--text, var(--color-text));
}
.sf__title::before {
    content: '';
    display: block;
    width: 3px; height: 14px;
    border-radius: 2px;
    background: var(--color-accent);
    flex-shrink: 0;
}
.sf__clear {
    display: inline-flex;
    align-items: center;
    font-size: .76rem;
    font-weight: 600;
    color: var(--color-primary);
    text-decoration: none;
    padding: .22rem .7rem;
    border: 1px solid var(--color-primary);
    border-radius: 99px;
    white-space: nowrap;
    min-height: 26px;
    transition: background .18s, color .18s;
}
.sf__clear:hover { background: var(--color-primary); color: #fff; }

/* ── Active filter chips ─────────────────────────────────────── */
.sf__active {
    display: flex;
    flex-wrap: wrap;
    gap: .35rem;
    padding: .65rem var(--sp-4);
    border-bottom: 1px solid var(--border, var(--color-border));
    background: rgba(var(--color-primary-rgb), .03);
}
.sf__chip {
    display: inline-flex;
    align-items: center;
    gap: .3rem;
    max-width: 180px;
    padding: .25rem .6rem;
    background: rgba(var(--color-primary-rgb), .07);
    border: 1px solid rgba(var(--color-primary-rgb), .2);
    border-radius: 99px;
    text-decoration: none;
    animation: sf-chip-in .15s ease;
    transition: background .18s, border-color .18s;
}
.sf__chip:hover {
    background: rgba(var(--color-primary-rgb), .14);
    border-color: rgba(var(--color-primary-rgb), .4);
}
.sf__chip-label {
    font-size: .74rem;
    font-weight: 600;
    color: var(--color-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sf__chip svg {
    width: 10px; height: 10px;
    flex-shrink: 0;
    color: var(--color-primary);
    opacity: .6;
}
.sf__chip-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: inherit;
    line-height: 1;
    min-width: 14px;
    min-height: 14px;
    touch-action: manipulation;
}
.sf__chip-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

@keyframes sf-chip-in {
    from { opacity: 0; transform: scale(.8); }
    to   { opacity: 1; transform: scale(1); }
}

/* ── Filter groups ───────────────────────────────────────────── */
.sf__group { border-bottom: 1px solid var(--border, var(--color-border)); }
.sf__group:last-of-type { border-bottom: none; }

.sf__group-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .82rem var(--sp-4);
    background: none;
    border: none;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--text, var(--color-text));
    cursor: pointer;
    text-align: start;
    font-family: inherit;
    min-height: 44px;
    touch-action: manipulation;
    transition: color .18s;
}
.sf__group-toggle:hover { color: var(--color-primary); }
.sf__group-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: -3px;
    border-radius: 4px;
}

.sf__chevron {
    width: 15px; height: 15px;
    flex-shrink: 0;
    color: var(--text-3, #aaa);
    margin-inline-start: auto;
    transition: transform .22s ease;
}
.sf__group-toggle[aria-expanded="false"] .sf__chevron {
    transform: rotate(-90deg);
}

/* CSS Grid accordion */
.sf__group-body {
    display: grid;
    grid-template-rows: 1fr;
    overflow: hidden;
    transition: grid-template-rows 300ms cubic-bezier(0.4, 0, 0.2, 1);
}
.sf__group-body.sf--collapsed {
    grid-template-rows: 0fr;
}
.sf__group-body-inner {
    min-height: 0;
    padding: .1rem var(--sp-4) var(--sp-3);
}

/* ── Custom checkboxes ───────────────────────────────────────── */
.sf__check-label {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .3rem 0;
    cursor: pointer;
    font-size: .855rem;
    color: var(--text, var(--color-text));
    user-select: none;
    min-height: 34px;
    transition: color .18s;
}
.sf__check-label:hover { color: var(--color-primary); }

.sf__checkbox {
    appearance: none;
    -webkit-appearance: none;
    width: 17px; height: 17px;
    min-width: 17px;
    border: 1.5px solid #ccc;
    border-radius: 4px;
    background: #fff;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: border-color .18s, background .18s;
}
.sf__checkbox:hover { border-color: var(--color-primary); }
.sf__checkbox:checked {
    background: var(--color-primary);
    border-color: var(--color-primary);
}
.sf__checkbox:checked::after {
    content: '';
    position: absolute;
    top: 2px; left: 5px;
    width: 5px; height: 8px;
    border: 2px solid #fff;
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
}
[dir="rtl"] .sf__checkbox:checked::after { left: auto; right: 5px; }
.sf__checkbox:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.sf__check-text {
    flex: 1;
    line-height: 1.4;
    transition: color 180ms ease;
}
.sf__check-count {
    font-size: .72rem;
    color: var(--text-3, #aaa);
    background: var(--surface, var(--color-surface-2));
    padding: .1rem .45rem;
    border-radius: 99px;
    flex-shrink: 0;
}

/* ── Price range ─────────────────────────────────────────────── */
.sf__price-row {
    display: flex;
    align-items: flex-end;
    gap: var(--sp-2);
}
.sf__price-field { flex: 1; }
.sf__price-label {
    display: block;
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: var(--text-3, #aaa);
    margin-bottom: .3rem;
}
.sf__price-input {
    width: 100%;
    height: 38px;
    border: 1.5px solid var(--border, var(--color-border));
    border-radius: var(--r-sm, 8px);
    padding: 0 .6rem;
    font-size: .855rem;
    font-family: inherit;
    color: var(--text, var(--color-text));
    background: #fff;
    transition: border-color .18s, box-shadow .18s;
}
.sf__price-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), .13);
}
.sf__price-sep {
    color: var(--text-3, #aaa);
    font-size: .9rem;
    padding-bottom: .5rem;
    flex-shrink: 0;
}

/* ── Color swatches ──────────────────────────────────────────── */
.sf__swatches {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
    padding: .3rem 0;
}
.sf__swatch-label { position: relative; cursor: pointer; }
.sf__swatch-input {
    position: absolute;
    opacity: 0;
    width: 0; height: 0;
}
.sf__swatch {
    display: block;
    width: 30px; height: 30px;
    border-radius: 50%;
    border: 2.5px solid transparent;
    background: var(--border, var(--color-border));
    transition: transform .18s, box-shadow .18s;
    outline: 2px solid transparent;
    outline-offset: 2px;
}
.sf__swatch-input:checked + .sf__swatch {
    border-color: #fff;
    box-shadow: 0 0 0 2.5px var(--color-primary);
    transform: scale(1.12);
}
.sf__swatch:hover { transform: scale(1.1); }
.sf__swatch-input:focus-visible + .sf__swatch {
    outline-color: var(--color-primary);
}

/* ── Search input ────────────────────────────────────────────── */
.sf__search-wrap {
    position: relative;
    display: flex;
    align-items: center;
}
.sf__search-icon {
    position: absolute;
    inset-inline-start: .65rem;
    width: 15px; height: 15px;
    color: var(--text-3, #aaa);
    pointer-events: none;
    flex-shrink: 0;
}
.sf__search-input {
    width: 100%;
    height: 40px;
    padding: 0 .75rem 0 2.1rem;
    border: 1.5px solid var(--border, var(--color-border));
    border-radius: var(--r-sm, 8px);
    font-size: .855rem;
    font-family: inherit;
    color: var(--text, var(--color-text));
    background: #fff;
    appearance: none;
    transition: border-color .18s, box-shadow .18s;
}
html[dir="rtl"] .sf__search-input { padding: 0 2.1rem 0 .75rem; }
.sf__search-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(var(--color-primary-rgb), .13);
}
.sf__search-input::placeholder { color: var(--text-3, #aaa); }
.sf__search-input::-webkit-search-cancel-button { display: none; }

/* ── Footer ──────────────────────────────────────────────────── */
.sf__footer {
    padding: var(--sp-3) var(--sp-4) var(--sp-4);
    border-top: 1px solid var(--border, var(--color-border));
}

/* ── Nested category tree ────────────────────────────────────── */
.sf__cat-row {
    display: flex;
    align-items: center;
    gap: .3rem;
}
.sf__cat-row--active > .sf__check-label .sf__check-text {
    font-weight: 600;
    color: var(--color-primary);
}

.sf__expand-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    width: 24px;
    height: 24px;
    min-width: 24px;
    background: none;
    border: 1px solid var(--border, var(--color-border));
    border-radius: 5px;
    cursor: pointer;
    color: var(--text-2, var(--color-text-2));
    flex-shrink: 0;
    margin-inline-start: auto;
    transition: border-color .18s, color .18s, background .18s;
    touch-action: manipulation;
}
.sf__expand-btn--has-selection {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), .07);
}
.sf__expand-btn--has-selection::after {
    content: '';
    position: absolute;
    top: 3px;
    inset-inline-end: 3px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--color-primary);
}
.sf__expand-btn:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(var(--color-primary-rgb), .06);
}
.sf__expand-btn:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 5px;
}

.sf__expand-icon {
    width: 12px;
    height: 12px;
    transition: transform 200ms ease-out;
    flex-shrink: 0;
}
.sf__expand-btn[aria-expanded="true"] .sf__expand-icon {
    transform: rotate(45deg);
}

.sf__children {
    overflow: hidden;
    transition: height 240ms cubic-bezier(0.4, 0, 0.2, 1);
    padding-inline-start: 1.25rem;
    border-inline-start: 2px solid rgba(var(--color-primary-rgb), .25);
    margin-inline-start: .5rem;
    margin-bottom: .15rem;
}

.sf__check-label--child {
    font-size: .825rem;
    color: var(--text-2, var(--color-text-2));
}
.sf__check-label--child:hover { color: var(--color-primary); }

.sf__cat-row--child.sf__cat-row--active > .sf__check-label .sf__check-text {
    font-weight: 600;
    color: var(--color-primary);
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 991.98px) {
    .shop-filter-form {
        border-radius: 0;
        width: 100%;
    }
    .sf__check-label {
        min-height: 44px;
        padding-top: .45rem;
        padding-bottom: .45rem;
    }
    .sf__expand-btn {
        width: 44px;
        height: 44px;
        min-width: 44px;
        border-radius: 8px;
    }
    .sf__group-toggle {
        min-height: 52px;
        padding-top: .9rem;
        padding-bottom: .9rem;
    }
    .sf__children {
        padding-inline-start: .9rem;
        margin-inline-start: .35rem;
    }
    .sf__price-input { height: 44px; }
    .sf__search-input { height: 44px; }
    .sf__footer .btn { min-height: 48px; font-size: .9rem; }
}

@media (max-width: 399.98px) {
    .sf__children {
        padding-inline-start: .6rem;
        margin-inline-start: .2rem;
    }
    .sf__check-count {
        flex-shrink: 0;
        font-size: .68rem;
    }
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
    .sf__chip { animation: none; }
    .sf__expand-icon,
    .sf__group-body,
    .sf__children { transition: none !important; }
}