/* ═══════════════════════════════════════════════
   KATALOG B2B — vcemmerch.ru
   Unified Design System: Matches Homepage (opt-landing)
   Ultra-Wide 1680px Grid | Inter + Outfit | Slate & Warm Amber
   ═══════════════════════════════════════════════ */

/* ── Reset & Variables ────────────────────────── */
:root {
  --kat-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --kat-font-display: 'Outfit', 'Inter', -apple-system, sans-serif;
  --kat-max: 1680px;
  --kat-dark: #0f172a;
  --kat-dark-hover: #1e293b;
  --kat-primary: #d97706;
  --kat-primary-hover: #b45309;
  --kat-primary-light: #fffbeb;
  --kat-accent: #d97706;
  --kat-accent-hover: #b45309;
  --kat-accent-light: #fef3c7;
  --kat-accent-glow: rgba(217, 119, 6, 0.16);
  --kat-text: #334155;
  --kat-muted: #64748b;
  --kat-border: #e2e8f0;
  --kat-border-light: #f1f5f9;
  --kat-bg: #f8fafc;
  --kat-white: #ffffff;
  --kat-light-gray: #f1f5f9;
  --kat-radius: 18px;
  --kat-radius-sm: 10px;
  --kat-radius-xs: 6px;
  --kat-shadow-sm: 0 4px 14px rgba(15, 23, 42, 0.04);
  --kat-shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
  --kat-shadow-hover: 0 18px 42px rgba(15, 23, 42, 0.1);
  --kat-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --kat-sidebar-w: 280px;
}

.kat-page {
  font-family: var(--kat-font);
  color: var(--kat-text);
  background: var(--kat-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.kat-page *, .kat-page *::before, .kat-page *::after { 
  box-sizing: border-box; 
}

/* ── Unified Ultra-Wide Container (1680px) ───── */
.kat-container {
  width: 96%;
  max-width: var(--kat-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════════════
   HERO BANNER (Matches Homepage light aesthetic)
   ═══════════════════════════════════════════════ */
.kat-hero {
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
  color: var(--kat-dark);
  padding: 44px 0 38px;
  border-bottom: 1px solid var(--kat-border);
  overflow: hidden;
}

.kat-hero__ambient {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 85% 25%, rgba(232, 200, 64, 0.20) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 10% 75%, rgba(241, 245, 249, 0.95) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

.kat-hero__grid-pattern {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.kat-hero__container {
  position: relative;
  z-index: 1;
  width: 96%;
  max-width: var(--kat-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Badge */
.kat-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fffbeb;
  border: 1px solid rgba(232, 200, 64, 0.65);
  color: #92400e;
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 14px;
  box-shadow: 0 2px 10px rgba(232, 200, 64, 0.15);
}

.kat-hero__badge-dot {
  width: 8px;
  height: 8px;
  background: #d97706;
  border-radius: 50%;
  animation: kat-pulse 2s infinite ease-in-out;
}

@keyframes kat-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.75); }
}

/* Breadcrumbs */
.kat-breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--kat-muted);
}
.kat-breadcrumbs a {
  color: var(--kat-muted);
  text-decoration: none;
  transition: color var(--kat-transition);
}
.kat-breadcrumbs a:hover { 
  color: var(--kat-primary); 
}
.kat-breadcrumbs__sep { 
  opacity: .5; 
  color: var(--kat-muted);
}
.kat-breadcrumbs span:last-child {
  color: var(--kat-dark);
  font-weight: 600;
}

/* Title & Description */
.kat-hero__title {
  font-family: var(--kat-font-display);
  font-size: clamp(32px, 3.8vw, 50px);
  font-weight: 900;
  line-height: 1.15;
  margin: 0 0 14px;
  letter-spacing: -0.025em;
  color: var(--kat-dark);
}
.kat-hero__title span {
  background: linear-gradient(90deg, #b45309 0%, #d97706 70%, #eab308 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.kat-hero__desc {
  font-size: 16px;
  line-height: 1.6;
  color: var(--kat-muted);
  max-width: 680px;
  margin: 0 0 24px;
}

/* Stats */
.kat-hero__stats {
  display: flex;
  gap: 36px;
  flex-wrap: wrap;
}
.kat-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.kat-hero__stat-num {
  font-family: var(--kat-font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--kat-dark);
}
.kat-hero__stat-label {
  font-size: 12px;
  color: var(--kat-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 600;
}

/* ═══════════════════════════════════════════════
   TICKER (Matches Homepage)
   ═══════════════════════════════════════════════ */
.kat-ticker {
  background: #fef08a;
  border-top: 1px solid #fde047;
  border-bottom: 1px solid #fde047;
  padding: 12px 0;
  overflow: hidden;
  white-space: nowrap;
}

.kat-ticker__track {
  display: inline-flex;
  animation: kat-ticker 24s linear infinite;
}

.kat-ticker__item {
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #78350f;
  padding: 0 24px;
  display: inline-flex;
  align-items: center;
  gap: 18px;
}

.kat-ticker__item::after {
  content: '✦';
  font-size: 12px;
  color: #b45309;
}

@keyframes kat-ticker {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ═══════════════════════════════════════════════
   CATALOG LAYOUT
   ═══════════════════════════════════════════════ */
.kat-catalog {
  padding: 44px 0 64px;
  background: var(--kat-bg);
}

.kat-catalog__layout {
  display: grid;
  grid-template-columns: var(--kat-sidebar-w) 1fr;
  gap: 32px;
  align-items: start;
}

/* ── Filter Toggle (mobile) ─── */
.kat-filter-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 20px;
  margin-bottom: 20px;
  background: var(--kat-white);
  border: 1px solid var(--kat-border);
  border-radius: var(--kat-radius-sm);
  font-family: var(--kat-font);
  font-size: 14px;
  font-weight: 700;
  color: var(--kat-dark);
  cursor: pointer;
  box-shadow: var(--kat-shadow-sm);
  transition: all var(--kat-transition);
}
.kat-filter-toggle:hover {
  border-color: var(--kat-primary);
  color: var(--kat-primary-hover);
  box-shadow: 0 0 0 3px var(--kat-accent-glow);
}
.kat-filter-toggle__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px; height: 20px;
  background: var(--kat-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
}

/* ═══════════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════════ */
.kat-sidebar {
  position: sticky;
  top: 100px;
  background: var(--kat-white);
  border-radius: var(--kat-radius);
  padding: 24px;
  box-shadow: var(--kat-shadow-sm);
  border: 1px solid var(--kat-border);
}
.kat-sidebar__header {
  display: none; /* Only shown on mobile drawer */
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--kat-border-light);
}
.kat-sidebar__header h3 {
  font-family: var(--kat-font-display);
  font-size: 20px;
  font-weight: 800;
  margin: 0;
  color: var(--kat-dark);
}
.kat-sidebar__close {
  background: none;
  border: none;
  color: var(--kat-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.kat-sidebar__close:hover {
  background: var(--kat-light-gray);
  color: var(--kat-dark);
}

/* Filter groups */
.kat-filter-group {
  margin-bottom: 24px;
}
.kat-filter-group:last-of-type { margin-bottom: 0; }
.kat-filter-group__title {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--kat-muted);
  margin: 0 0 14px;
}

/* Chips */
.kat-filter-chips {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.kat-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--kat-light-gray);
  border: 1px solid var(--kat-border);
  border-radius: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--kat-text);
  text-decoration: none;
  transition: all var(--kat-transition);
  cursor: pointer;
}
.kat-chip:hover {
  border-color: var(--kat-primary);
  color: var(--kat-primary-hover);
  background: var(--kat-primary-light);
  transform: translateX(3px);
  text-decoration: none;
}
.kat-chip.is-active {
  background: var(--kat-dark);
  color: #fff;
  border-color: var(--kat-dark);
  font-weight: 600;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.16);
  transform: translateX(3px);
}
.kat-chip__count {
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 20px;
  background: rgba(15, 23, 42, 0.08);
  font-weight: 700;
}
.kat-chip.is-active .kat-chip__count {
  background: rgba(255, 255, 255, 0.2);
  color: #fde047;
}

/* Filter reset */
.kat-filter-reset {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  padding: 8px 12px;
  background: rgba(239, 68, 68, 0.08);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #dc2626;
  text-decoration: none;
  transition: all var(--kat-transition);
}
.kat-filter-reset:hover {
  background: rgba(239, 68, 68, 0.15);
  text-decoration: none;
}

/* Sidebar CTA */
.kat-sidebar-cta {
  margin-top: 28px;
  padding: 20px;
  background: linear-gradient(135deg, var(--kat-dark) 0%, #1e293b 100%);
  border-radius: var(--kat-radius-sm);
  text-align: center;
  box-shadow: var(--kat-shadow-sm);
}
.kat-sidebar-cta p {
  font-size: 13px;
  color: #cbd5e1;
  margin: 0 0 12px;
  line-height: 1.5;
  font-weight: 500;
}
.kat-sidebar-cta__btn {
  display: inline-block;
  padding: 10px 20px;
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #fff !important;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--kat-transition);
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.3);
}
.kat-sidebar-cta__btn:hover {
  background: linear-gradient(135deg, #b45309 0%, #92400e 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(217, 119, 6, 0.4);
  text-decoration: none;
}

/* ═══════════════════════════════════════════════
   TOOLBAR
   ═══════════════════════════════════════════════ */
.kat-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.kat-toolbar__info {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}
.kat-toolbar__category {
  font-family: var(--kat-font-display);
  font-size: 24px;
  font-weight: 800;
  margin: 0;
  color: var(--kat-dark);
}
.kat-toolbar__count {
  font-size: 14px;
  color: var(--kat-muted);
  font-weight: 500;
}
.kat-toolbar__sort {
  display: flex;
  align-items: center;
  gap: 8px;
}
.kat-toolbar__sort label {
  font-size: 13px;
  color: var(--kat-muted);
  font-weight: 500;
  white-space: nowrap;
}
.kat-toolbar__sort select {
  appearance: none;
  -webkit-appearance: none;
  padding: 8px 32px 8px 14px;
  background: var(--kat-white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2.5'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E") right 10px center / 12px no-repeat;
  border: 1px solid var(--kat-border);
  border-radius: var(--kat-radius-xs);
  font-family: var(--kat-font);
  font-size: 13px;
  font-weight: 600;
  color: var(--kat-dark);
  cursor: pointer;
  transition: all var(--kat-transition);
}
.kat-toolbar__sort select:hover,
.kat-toolbar__sort select:focus {
  border-color: var(--kat-primary);
  outline: none;
  box-shadow: 0 0 0 3px var(--kat-accent-glow);
}

/* ═══════════════════════════════════════════════
   PRODUCT GRID (4 Columns for 1680px Grid)
   ═══════════════════════════════════════════════ */
.kat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

/* Product Card */
.kat-card {
  position: relative;
  background: var(--kat-white);
  border-radius: var(--kat-radius);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  border: 1px solid var(--kat-border);
  transition: all var(--kat-transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--kat-shadow-sm);
}
.kat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--kat-shadow-hover);
  border-color: var(--kat-primary);
  text-decoration: none;
}

/* Card image */
.kat-card__img-box {
  position: relative;
  aspect-ratio: 1 / 1;
  background: var(--kat-light-gray);
  overflow: hidden;
}
.kat-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity .4s ease, transform .5s cubic-bezier(0.16, 1, 0.3, 1);
}
.kat-card__img--hover {
  opacity: 0;
}
.kat-card:hover .kat-card__img--main {
  transform: scale(1.05);
}

/* Badges */
.kat-card__cat-badge {
  position: absolute;
  top: 12px; left: 12px;
  padding: 5px 10px;
  background: rgba(15, 23, 42, 0.75);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: var(--kat-white);
  font-size: 11px;
  font-weight: 600;
  border-radius: 100px;
  letter-spacing: .02em;
  z-index: 2;
}
.kat-card__featured-badge {
  position: absolute;
  top: 12px; right: 12px;
  padding: 5px 12px;
  background: #fffbeb;
  border: 1px solid rgba(217, 119, 6, 0.4);
  color: #b45309;
  font-size: 11px;
  font-weight: 800;
  border-radius: 100px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.15);
}

/* Card body */
.kat-card__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px 18px;
  flex: 1;
}
.kat-card__name {
  font-family: var(--kat-font-display);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  margin: 0;
  color: var(--kat-dark);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kat-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.kat-card__density,
.kat-card__fabric {
  display: inline-block;
  padding: 3px 8px;
  background: var(--kat-light-gray);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--kat-muted);
}

.kat-card__colors {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  color: var(--kat-muted);
  font-weight: 500;
}
.kat-card__colors svg {
  flex-shrink: 0;
  color: var(--kat-primary);
}

.kat-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--kat-border-light);
}
.kat-card__price {
  font-family: var(--kat-font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--kat-dark);
}
.kat-card__price--request {
  font-size: 12px;
  font-weight: 700;
  color: #b45309;
  background: #fffbeb;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid rgba(217, 119, 6, 0.25);
}
.kat-card__cta {
  font-size: 13px;
  font-weight: 700;
  color: var(--kat-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all var(--kat-transition);
}
.kat-card:hover .kat-card__cta {
  color: var(--kat-primary-hover);
  transform: translateX(3px);
}

/* ═══════════════════════════════════════════════
   PAGINATION (Instant Switch)
   ═══════════════════════════════════════════════ */
.kat-pagination {
  margin-top: 48px;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.kat-pagination__numbers {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.kat-page-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  min-width: 44px !important;
  height: 44px !important;
  padding: 0 14px !important;
  border-radius: 100px !important;
  font-family: var(--kat-font) !important;
  font-size: 14px !important;
  font-weight: 600 !important;
  line-height: 1 !important;
  background: var(--kat-white) !important;
  color: var(--kat-dark) !important;
  border: 1px solid var(--kat-border) !important;
  box-shadow: var(--kat-shadow-sm) !important;
  cursor: pointer !important;
  text-decoration: none !important;
  transition: all .2s cubic-bezier(.4,0,.2,1) !important;
  user-select: none;
  box-sizing: border-box;
}

.kat-page-btn:hover:not(.is-active):not(:disabled):not(.is-disabled) {
  border-color: var(--kat-primary) !important;
  color: var(--kat-primary-hover) !important;
  background: var(--kat-primary-light) !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(217, 119, 6, 0.15) !important;
  text-decoration: none !important;
}

.kat-page-btn:active:not(:disabled):not(.is-disabled) {
  transform: translateY(0);
}

.kat-page-btn.is-active {
  background: var(--kat-dark) !important;
  color: #ffffff !important;
  border-color: var(--kat-dark) !important;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.25) !important;
  cursor: default !important;
}

.kat-page-btn--dots {
  border: none !important;
  background: transparent !important;
  min-width: 24px !important;
  padding: 0 4px !important;
  color: var(--kat-muted) !important;
  box-shadow: none !important;
  cursor: default !important;
  pointer-events: none;
}

.kat-page-btn--arrow {
  padding: 0 16px !important;
}

.kat-page-btn--arrow svg {
  display: block;
  transition: transform .2s ease;
}

.kat-page-btn--prev:hover:not(:disabled):not(.is-disabled) svg {
  transform: translateX(-3px);
}

.kat-page-btn--next:hover:not(:disabled):not(.is-disabled) svg {
  transform: translateX(3px);
}

.kat-page-btn:disabled,
.kat-page-btn.is-disabled {
  opacity: .35 !important;
  cursor: not-allowed !important;
  pointer-events: none;
  box-shadow: none !important;
}

/* Card visibility and animation */
.kat-card.is-hidden {
  display: none !important;
}

.kat-card:not(.is-hidden) {
  animation: kat-cardFadeIn .2s ease-out;
}

@keyframes kat-cardFadeIn {
  from {
    opacity: 0.3;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ═══════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════ */
.kat-empty {
  text-align: center;
  padding: 80px 20px;
}
.kat-empty__icon {
  font-size: 56px;
  margin-bottom: 16px;
}
.kat-empty h3 {
  font-family: var(--kat-font-display);
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--kat-dark);
}
.kat-empty p {
  color: var(--kat-muted);
  font-size: 15px;
}
.kat-empty a {
  color: var(--kat-primary);
  text-decoration: underline;
  font-weight: 600;
}

/* ═══════════════════════════════════════════════
   CTA BOTTOM BAR
   ═══════════════════════════════════════════════ */
.kat-cta-section {
  padding: 0 0 64px;
  background: var(--kat-bg);
}
.kat-cta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 44px;
  background: linear-gradient(135deg, var(--kat-dark) 0%, #1e293b 100%);
  border-radius: var(--kat-radius);
  box-shadow: var(--kat-shadow);
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.kat-cta-bar__text h3 {
  font-family: var(--kat-font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--kat-white);
  margin: 0 0 8px;
  letter-spacing: -0.01em;
}
.kat-cta-bar__text p {
  font-size: 15px;
  color: #94a3b8;
  margin: 0;
  line-height: 1.5;
}
.kat-cta-bar__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 15px 32px;
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #fff !important;
  border-radius: 100px;
  font-family: var(--kat-font);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--kat-transition);
  box-shadow: 0 8px 24px rgba(217, 119, 6, 0.3);
}
.kat-cta-bar__btn:hover {
  background: linear-gradient(135deg, #b45309 0%, #92400e 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(217, 119, 6, 0.4);
  text-decoration: none;
}

/* ═══════════════════════════════════════════════
   SIDEBAR OVERLAY (Mobile)
   ═══════════════════════════════════════════════ */
.kat-sidebar-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all .3s ease;
}
.kat-sidebar-overlay.is-visible {
  opacity: 1;
  visibility: visible;
}

/* ═══════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   ═══════════════════════════════════════════════ */

/* Large desktop to standard desktop */
@media (max-width: 1400px) {
  .kat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Tablet: 2 columns */
@media (max-width: 1100px) {
  .kat-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile sidebar drawer */
@media (max-width: 900px) {
  .kat-filter-toggle { display: flex; }

  .kat-catalog__layout {
    grid-template-columns: 1fr;
  }

  .kat-sidebar {
    position: fixed;
    top: 0;
    left: -100%;
    bottom: 0;
    width: min(320px, 85vw);
    z-index: 1000;
    border-radius: 0 var(--kat-radius) var(--kat-radius) 0;
    overflow-y: auto;
    transition: left .35s cubic-bezier(.4,0,.2,1);
    padding: 24px;
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.25);
  }
  .kat-sidebar.is-open { left: 0; }
  .kat-sidebar__header { display: flex; }

  .kat-toolbar__category { font-size: 20px; }

  .kat-cta-bar {
    flex-direction: column;
    text-align: center;
    padding: 30px 24px;
  }
  .kat-cta-bar__btn {
    width: 100%;
    justify-content: center;
  }
}

/* Mobile */
@media (max-width: 640px) {
  .kat-hero { padding: 32px 0 28px; }
  .kat-hero__badge {
    font-size: 11px;
    padding: 5px 12px;
    letter-spacing: 0.03em;
  }
  .kat-hero__title { font-size: 28px; margin-bottom: 12px; }
  .kat-hero__stats { gap: 16px; }

  .kat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .kat-card__body { padding: 12px 14px 14px; }
  .kat-card__name { font-size: 13px; }
  .kat-card__meta { display: none; }
  .kat-card__colors { font-size: 11px; }
  .kat-card__price { font-size: 13px; }
  .kat-card__cta { display: none; }

  .kat-toolbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .kat-page-btn {
    min-width: 38px !important;
    height: 38px !important;
    font-size: 13px !important;
    padding: 0 10px !important;
  }
}

/* Extra small */
@media (max-width: 400px) {
  .kat-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}