/* Modern 2025 styles for filter block */
.filter-block{
    max-width:300px;
    padding:18px;
    border-radius:14px;
    background:linear-gradient(180deg, rgba(255,255,255,0.72), rgba(250,250,250,0.6));
    box-shadow: 0 8px 24px rgba(16,24,40,0.08), inset 0 1px 0 rgba(255,255,255,0.6);
    border: 1px solid rgba(20,28,48,0.06);
    backdrop-filter: blur(6px) saturate(120%);
    -webkit-backdrop-filter: blur(6px) saturate(120%);
    /* only animate shadow to avoid layout shift when hovering */
    transition: box-shadow 220ms ease;
}
.filter-block:hover{ box-shadow: 0 12px 36px rgba(16,24,40,0.10); }

.filter-block .filter-section{ margin-bottom:18px; }

.filter-block h4{
    font-size:15px;
    margin:0 0 12px;
    color:#0f1724; /* deep slate */
    font-weight:600;
    letter-spacing: -0.01em;
}

.filter-section .section-header{ display:flex; align-items:center; gap:8px; }
.filter-section .section-header .subtitle{ color:#6b7280; font-size:12px; }

.filter-values{ display:flex; flex-direction:column; gap:10px; }

/* When a values list has more than 11 options, limit height and allow scroll */
.filter-values.scrollable{
    max-height: 260px; /* ~11 items at 22-24px each plus gaps */
    overflow-y: auto;
    padding-right: 6px; /* space for scrollbar */
}

/* Nice inertial scrolling on touch devices */
.filter-values.scrollable{ -webkit-overflow-scrolling: touch; scrollbar-width: thin; }
.filter-values.scrollable::-webkit-scrollbar{ width: 8px; }
.filter-values.scrollable::-webkit-scrollbar-thumb{ background: rgba(0,0,0,0.15); border-radius: 6px; }
.filter-values.scrollable::-webkit-scrollbar-track{ background: transparent; }

.filter-option{ display:flex; align-items:center; gap:10px; font-size:14px; color:#111827; }
.filter-option label{ cursor:pointer; display:flex; align-items:center; gap:10px; flex:1 }

/* Modern checkbox using accent-color when supported, fallback styles */
.filter-option input[type=checkbox]{ width:18px; height:18px; accent-color: #d9a180; border-radius:4px; cursor:pointer; }
.filter-option .cnt{ color:#9ca3af; font-size:12px; margin-left:auto; padding:4px 8px; }

.filter-price .price-row{ display:flex; gap:10px; }
.filter-price input[type=number]{ width:100%; padding:10px 12px; border-radius:10px; border:1px solid rgba(15,23,36,0.06); background:rgba(255,255,255,0.6); box-shadow: inset 0 1px 0 rgba(255,255,255,0.6); max-width: 100px; }
.filter-price input[type=number]:focus{ outline: none; box-shadow: 0 0 0 4px rgba(11,116,222,0.08); border-color:#0b74de }

.filter-actions{ display:flex; gap:10px; justify-content:flex-end; align-items:center }
.filters-reset, .filters-apply{ padding:10px 14px; border-radius:10px; cursor:pointer; font-weight:600; font-size:14px; border: none; }
.filters-reset{ background: transparent; color:#374151; border:1px solid rgba(15,23,36,0.06); }
.filters-reset:hover{ background: rgba(15,23,36,0.02) }
.filters-apply{
    background: linear-gradient(90deg, var(--primary), #c18e64);
    color:#fff;
    box-shadow: 0 6px 18px rgba(16,24,40,0.06);
    transition: background 320ms cubic-bezier(.2,.9,.2,1), transform 180ms ease, box-shadow 220ms ease;
}
.filters-apply:hover{
    transform: translateY(-3px);
    background: linear-gradient(90deg, #e5b88a, #b36f3f);
    box-shadow: 0 12px 30px rgba(16,24,40,0.10);
}
.filters-apply:focus{ outline: none; box-shadow: 0 0 0 6px rgba(211,160,120,0.12); }
.filters-apply:active{ transform: translateY(1px); }

/* small counter badge for overall results */
.filters-count{ display:inline-block; font-size:13px; color:#0b1220; padding:4px 8px; margin-left:8px }

/* Make block full-width on small screens */
@media (max-width:640px){
    .filter-block{ max-width:100%; padding:14px }
    .filter-actions{ flex-direction:row; justify-content:space-between }
}

/* Accessibility focus states */
.filter-option input[type=checkbox]:focus{ outline: 3px solid rgba(11,116,222,0.12); outline-offset: 2px }
.filters-apply:focus{ box-shadow: 0 0 0 6px rgba(11,116,222,0.08) }

/* Subtle divider */
.filter-divider{ height:1px; background: linear-gradient(90deg, rgba(15,23,36,0.03), rgba(15,23,36,0.02)); margin:12px -18px; }

/* Toggle button for mobile filters */
.filter-toggle-btn{
    display: none; /* shown only on small screens */
    align-items: center;
    gap:8px;
    padding:10px 12px;
    font-weight:600;
    border-radius:8px;
    border:1px solid #e1e4e8; /* match sorting */
    background:#fff; /* match sorting */
    color:#1f2328;   /* match sorting */
    cursor:pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03); /* subtle like sorting */
}
.filter-toggle-btn:hover{
    border-color:#c9d1d9;
    background:#f1f5f9;
}

/* Collapsed state: hide the form and keep a compact header area */
.filter-block.collapsed .filters-form{ display: none; }
.filter-block .filters-form{ transition: max-height 240ms ease; }

@media (max-width:735px){
    .filter-toggle-btn{ display: inline-flex; width:auto; justify-content:center; max-width: 159px;
        width: 159px; }
    .filter-block{ padding:12px }
}

/* Prevent flash-of-overlay on initial page load on mobile:
   hide the filter block until JS signals it's ready. This avoids the
   fixed overlay appearing briefly before the script collapses it. */
@media (max-width:735px){
    .filter-block{ visibility: hidden; opacity: 0; }
    body.filters-js-ready .filter-block{ visibility: visible; opacity: 1; }
}

/* When expanded (not .collapsed) on small screens show as an overlay above products */
@media (max-width:735px){
    .filter-block:not(.collapsed){
        position: fixed;
        left: 12px;
        right: 12px;
        top: 12px;
        bottom: 12px; /* cover viewport with small margins to capture scroll */
        z-index: 1200;
        border-radius: 12px;
        box-shadow: 0 20px 40px rgba(16,24,40,0.2);
        background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(250,250,250,0.94));
        backdrop-filter: blur(6px) saturate(120%);
        -webkit-backdrop-filter: blur(6px) saturate(120%);
        max-height: none;
        overflow: hidden; /* prevent double scrollbars; inner form will scroll */
    }
    /* ensure the toggle button remains visible at the top of the overlay */
    .filter-block:not(.collapsed) .filter-toggle-btn{
        position: sticky;
        top: 0;
        z-index: 5;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
    }
    /* collapsed state: make container minimal like sorting control */
    .filter-block.collapsed{
        background: transparent;
        box-shadow: none;
        border: none;
        padding: 0;
        max-width: 159px;
    }
}

/* Mobile filter list heights by viewport height */
@media (max-width:735px) and (min-height:841px) {
    .filter-block:not(.collapsed) .filters-form { height: 635px; overflow: auto; }
}
@media (max-width:735px) and (min-height:651px) and (max-height:840px) {
    .filter-block:not(.collapsed) .filters-form { height: 450px; overflow: auto; }
}
@media (max-width:735px) and (min-height:551px) and (max-height:650px) {
    .filter-block:not(.collapsed) .filters-form { height: 350px; overflow: auto; }
}
@media (max-width:735px) and (max-height:550px) {
    .filter-block:not(.collapsed) .filters-form { height: 305px; overflow: auto; }
}

/* Prefer flexible max-height scrolling for the inner form to fit any device height */
@media (max-width:735px){
    .filter-block:not(.collapsed) .filters-form{
        height: calc(100% - 44px); /* leave space for sticky toggle header approx */
        max-height: none !important;
        overflow: auto;
        -webkit-overflow-scrolling: touch; /* smooth touch scroll */
    }
}

/* Lock background scroll when filters overlay is open */
body.filters-open{ overflow: hidden; }

/* Optional dim backdrop behind overlay (non-interactive) */
body.filters-open::before{
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(15,23,36,0.28);
    z-index: 1100; /* below overlay z-index 1200 */
    pointer-events: none;
}

/* Preserve layout space when mobile filter overlay is opened.
   The filter block becomes position:fixed (removed from flow) which can
   collapse the aside and shift content; add a pseudo-element to the
   filters column to keep its height while overlay is active. */
@media (max-width:735px){
    body.filters-open .filters-column::after{
        content: '';
        display: block;
        height: 48px; /* approximate height of the collapsed toggle header */
        width: 100%;
    }
}

@media (min-width:736px) and (max-width: 1085px) {
    .filter-block{ 
        max-width:197px;
    }
    .filter-price input[type=number] {
        max-width: 70px;
    }
    .filters-reset, .filters-apply {
        font-size: 12px;
        padding: 4px 5px;
    }    
    
}

/* Very small screens: smaller filter button */
@media (min-width:320px) and (max-width: 368px) {
    .filter-toggle-btn {
        padding: 6px 8px;
        font-size: 12px;
        gap: 6px;
        max-width: 137px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}