/* =====================================================
   Smart Sidebar Filters — Frontend CSS
   ===================================================== */

:root {
  --ssf-primary:      #151BB9 !important;
  --ssf-primary-dark: #1340b0;
  --ssf-accent:       #f0f4ff;
  --ssf-text:         #1a202c;
  --ssf-text-muted:   #6b7280;
  --ssf-border:       #e5e7eb;
  --ssf-bg:           #ffffff;
  --ssf-shadow:       0 2px 12px rgba(0,0,0,.08);
  --ssf-radius:       10px;
  --ssf-radius-sm:    6px;
}

/* ── Layout ─────────────────────────────────────── */
.ssf-sidebar {
  width: 380px;
  flex-shrink: 0;
  font-family: inherit;
}

.ssf-sidebar-inner {
  background: var(--ssf-bg);
  border: 1px solid var(--ssf-border);
  border-radius: var(--ssf-radius);
  padding: 20px;
  box-shadow: var(--ssf-shadow);
  position: sticky;
  top: 20px;
}

/* ── Block Titles ───────────────────────────────── */
.ssf-block {
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--ssf-border);
}
.ssf-block:last-of-type { border-bottom: none; margin-bottom: 14px; }

.ssf-block__title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--ssf-text);
  margin: 0 0 14px;
  cursor: default;
}
.ssf-block__title.ssf-collapsible { cursor: pointer; user-select: none; }
.ssf-block__title svg { color: var(--ssf-primary); flex-shrink: 0; }
.ssf-chevron { margin-left: auto; transition: transform .2s; }
.ssf-block__title.open .ssf-chevron { transform: rotate(180deg); }

/* ── Search ─────────────────────────────────────── */
.ssf-search-wrap {
  position: relative;
}
.ssf-search-input {
  width: 100%;
  box-sizing: border-box;
  padding: 9px 36px 9px 12px;
  border: 1.5px solid var(--ssf-border);
  border-radius: var(--ssf-radius-sm);
  font-size: 13.5px;
  color: var(--ssf-text);
  background: #f9fafb;
  transition: border-color .18s, box-shadow .18s;
  outline: none;
}
.ssf-search-input:focus {
  border-color: var(--ssf-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(26,86,219,.1);
}
.ssf-search-icon {
  position: absolute;
  right: 10px; top: 50%;
  transform: translateY(-50%);
  color: var(--ssf-text-muted);
  pointer-events: none;
  display: flex;
}

/* ── Price Range ─────────────────────────────────── */
.ssf-price-display {
  display: flex;
  justify-content: space-between;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ssf-primary);
  margin-bottom: 14px;
}

.ssf-range-wrap {
  position: relative;
  height: 20px;
  display: flex;
  align-items: center;
}

.ssf-range-track {
  position: absolute;
  width: 100%;
  height: 4px;
  background: var(--ssf-border);
  border-radius: 2px;
  z-index: 0;
  pointer-events: none;
}
.ssf-range-fill {
  position: absolute;
  height: 100%;
  background: var(--ssf-primary);
  border-radius: 2px;
}

.ssf-range {
  -webkit-appearance: none;
  appearance: none;
  position: absolute;
  width: 100%;
  background: transparent;
  pointer-events: none;
  z-index: 2;
  height: 20px;
}
.ssf-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--ssf-primary);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
  pointer-events: all;
  cursor: pointer;
  transition: transform .15s;
}
.ssf-range::-webkit-slider-thumb:hover { transform: scale(1.2); }
.ssf-range::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--ssf-primary);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,.2);
  pointer-events: all;
  cursor: pointer;
}

/* ── Check List (Brands & Series) ───────────────── */
.ssf-check-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  max-height: 220px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--ssf-border) transparent;
}
.ssf-check-list.collapsed { display: none; }

.ssf-check-item {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 7px 8px;
  border-radius: var(--ssf-radius-sm);
  cursor: pointer;
  transition: background .15s;
}
.ssf-check-item:hover { background: var(--ssf-accent); }

.ssf-check-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}

.ssf-checkmark {
  width: 16px; height: 16px;
  border: 1.5px solid var(--ssf-border);
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s, border-color .15s;
  background: #fff;
}
.ssf-check-item input:checked ~ .ssf-checkmark {
  background: var(--ssf-primary);
  border-color: var(--ssf-primary);
}
.ssf-check-item input:checked ~ .ssf-checkmark::after {
  content: '';
  width: 5px; height: 8px;
  border: 1.5px solid #fff;
  border-top: none;
  border-left: none;
  transform: rotate(45deg) translate(-1px,-1px);
  display: block;
}

.ssf-label {
  font-size: 13.5px;
  color: var(--ssf-text);
  flex: 1;
}
.ssf-check-item input:checked ~ .ssf-checkmark ~ .ssf-label {
  color: var(--ssf-primary);
  font-weight: 500;
}

.ssf-count {
  font-size: 11px;
  background: var(--ssf-border);
  color: var(--ssf-text-muted);
  padding: 1px 6px;
  border-radius: 20px;
}

/* ── Buttons ─────────────────────────────────────── */
.ssf-apply-btn {
  width: 100%;
  background: var(--ssf-primary);
  color: #fff;
  border: none;
  border-radius: var(--ssf-radius-sm);
  padding: 11px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.ssf-apply-btn:hover {
  background: var(--ssf-primary-dark);
  transform: translateY(-1px);
}
.ssf-apply-btn:active { transform: translateY(0); }

.ssf-reset-btn {
  width: 100%;
  background: transparent;
  color: var(--ssf-text-muted);
  border: 1px solid var(--ssf-border);
  border-radius: var(--ssf-radius-sm);
  padding: 8px;
  font-size: 13px;
  cursor: pointer;
  transition: all .18s;
}
.ssf-reset-btn:hover {
  border-color: #f87171;
  color: #dc2626;
  background: #fff5f5;
}

/* ── Products Area ──────────────────────────────── */
.ssf-products-wrap { flex: 1; min-width: 0; }

.ssf-products-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 10px;
}
.ssf-result-count {
  font-size: 13.5px;
  color: var(--ssf-text-muted);
}
.ssf-sort-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}
.ssf-sort-select {
  padding: 6px 10px;
  border: 1px solid var(--ssf-border);
  border-radius: var(--ssf-radius-sm);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

/* ── Loader ─────────────────────────────────────── */
.ssf-loader {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 60px 0;
  color: var(--ssf-text-muted);
  font-size: 13.5px;
}
.ssf-loader.active { display: flex; }

.ssf-spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--ssf-border);
  border-top-color: var(--ssf-primary);
  border-radius: 50%;
  animation: ssf-spin .7s linear infinite;
}
@keyframes ssf-spin { to { transform: rotate(360deg); } }

/* ── Products Grid ──────────────────────────────── */
.ssf-products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.ssf-products-grid[data-columns="2"] { grid-template-columns: repeat(2, 1fr); }
.ssf-products-grid[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }

/* ── Product Card ───────────────────────────────── */
.ssf-product-card {
  background: var(--ssf-bg);
  border: 1px solid var(--ssf-border);
  border-radius: var(--ssf-radius);
  overflow: hidden;
  position: relative;
  transition: box-shadow .2s, transform .2s;
}
.ssf-product-card:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
  transform: translateY(-2px);
}

.ssf-badge {
  position: absolute;
  top: 10px; left: 10px;
  background: var(--ssf-primary);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
  z-index: 1;
  letter-spacing: .05em;
}

.ssf-product-img-wrap {
  display: block;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f3f4f6;
}
.ssf-product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 10px;
  box-sizing: border-box;
  transition: transform .3s;
}
.ssf-product-card:hover .ssf-product-img-wrap img { transform: scale(1.05); }

.ssf-product-img-wrap--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4/3;
  background: #f3f4f6;
}

.ssf-product-info {
  padding: 12px 14px 14px;
}
.ssf-product-brand {
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: #151bb9;
    display: block;
    margin-bottom: 9px;
    font-weight: 600;
    text-align: center;
}
.ssf-product-title {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 4px;
  line-height: 1.4;
}
.ssf-product-title a {
  color: var(--ssf-text);
  text-decoration: none;
}
.ssf-product-title a:hover { color: var(--ssf-primary); }
.ssf-product-series {
  font-size: 11.5px;
  color: var(--ssf-text-muted);
  display: block;
  margin-bottom: 8px;
}
.ssf-product-price {
    font-size: 18px !important;
    font-weight: 700;
    color: #151bb9;
    margin-bottom: 10px;
    text-align: center !important;
}
.ssf-product-btn {
  display: block;
  text-align: center;
  background: var(--ssf-accent);
  color: var(--ssf-primary);
  font-size: 12.5px;
  font-weight: 600;
  padding: 7px;
  border-radius: var(--ssf-radius-sm);
  text-decoration: none;
  transition: background .15s, color .15s;
}
.ssf-product-btn:hover {
  background: var(--ssf-primary);
  color: #fff;
}

/* ── No Results ─────────────────────────────────── */
.ssf-no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--ssf-text-muted);
}
.ssf-no-results p { font-size: 15px; margin: 14px 0 20px; }
.ssf-no-results .ssf-reset-btn { display: inline-block; width: auto; padding: 9px 20px; }

/* ── Pagination ─────────────────────────────────── */
.ssf-pagination { margin-top: 24px; }
.ssf-page-nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  justify-content: center;
}
.ssf-page-btn {
  width: 34px; height: 34px;
  border: 1.5px solid var(--ssf-border);
  background: #fff;
  border-radius: var(--ssf-radius-sm);
  font-size: 13px;
  cursor: pointer;
  transition: all .15s;
  color: var(--ssf-text);
}
.ssf-page-btn:hover, .ssf-page-btn.ssf-page-active {
  background: var(--ssf-primary);
  border-color: var(--ssf-primary);
  color: #fff;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 900px) {
  .ssf-sidebar { width: 100%; position: static; }
  .ssf-sidebar-inner { position: static; }
  .ssf-products-grid { grid-template-columns: repeat(2, 1fr) !important; }
}
@media (max-width: 580px) {
  .ssf-products-grid { grid-template-columns: 1fr !important; }
}