/* =============================================
   CSS VARIABLES & RESET
   ============================================= */
:root {
  --primary:       #0f1b2d;
  --primary-light: #1a2e4a;
  --accent:        #16a34a;
  --accent-hover:  #15803d;
  --accent-light:  #f0fdf4;
  --bg:            #f4f6f9;
  --card:          #ffffff;
  --text:          #1a202c;
  --text-2:        #4a5568;
  --text-muted:    #718096;
  --border:        #e2e8f0;
  --border-light:  #f0f2f5;
  --success:       #38a169;
  --success-bg:    #f0fff4;
  --danger:        #e53e3e;
  --shadow-sm:     0 1px 3px rgba(0,0,0,.08);
  --shadow-md:     0 4px 12px rgba(0,0,0,.10);
  --shadow-lg:     0 8px 30px rgba(0,0,0,.12);
  --shadow-xl:     0 20px 40px rgba(0,0,0,.14);
  --radius-sm:     6px;
  --radius:        12px;
  --radius-lg:     16px;
  --radius-xl:     24px;
  --transition:    .2s ease;
  --header-h:      68px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select { font-family: inherit; }
ul { list-style: none; }

/* =============================================
   LAYOUT
   ============================================= */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}
.container--narrow { max-width: 960px; }

/* =============================================
   TYPOGRAPHY
   ============================================= */
.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}
.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn--primary {
  background: var(--accent);
  color: #fff;
}
.btn--primary:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(22,163,74,.35); }
.btn--secondary {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn--secondary:hover { background: var(--accent-light); }
.btn--dark {
  background: var(--primary);
  color: #fff;
}
.btn--dark:hover { background: var(--primary-light); }
.btn--ghost {
  background: rgba(255,255,255,.12);
  color: #fff;
  border: 1.5px solid rgba(255,255,255,.25);
}
.btn--ghost:hover { background: rgba(255,255,255,.22); }
.btn--sm { padding: 7px 14px; font-size: .8rem; }
.btn--lg { padding: 14px 28px; font-size: 1rem; }
.btn--full { width: 100%; justify-content: center; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none !important; }

/* =============================================
   HEADER
   ============================================= */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--primary);
  z-index: 1000;
  transition: box-shadow var(--transition);
  display: flex;
  align-items: center;
}
.header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.3); }
.header > .container { width: 100%; }
.header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto auto;
  align-items: center;
  gap: 20px;
  width: 100%;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo__mark {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  font-weight: 800;
  color: #fff;
}
.logo__text {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -.5px;
}
.logo__sub {
  font-size: .65rem;
  color: rgba(255,255,255,.5);
  font-weight: 400;
  display: block;
  line-height: 1;
  margin-top: 2px;
}

.header__search {
  flex: 1 1 0%;
  min-width: 0;
  max-width: 700px;
  display: flex;
  height: 38px;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  border: 1.5px solid rgba(255,255,255,.15);
  overflow: hidden;
  transition: border-color var(--transition);
}
.header__search:focus-within {
  border-color: var(--accent);
  background: rgba(255,255,255,.15);
}
.header__search input {
  flex: 1;
  background: none;
  border: none;
  color: #fff;
  padding: 0 16px;
  font-size: .9rem;
  outline: none;
}
.header__search input::placeholder { color: rgba(255,255,255,.45); }
.header__search button {
  padding: 0 18px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  font-size: .85rem;
  transition: background var(--transition);
}
.header__search button:hover { background: var(--accent-hover); }

.header__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.header__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.header__nav a {
  color: rgba(255,255,255,.75);
  font-size: .88rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}
.header__nav a:hover, .header__nav a.active {
  color: #fff;
  background: rgba(255,255,255,.1);
}
.cart-btn {
  position: relative;
  height: 38px;
  padding: 0 14px 0 10px;
  border-radius: var(--radius-sm);
  background: var(--accent);
  border: none;
  color: #fff;
  display: flex; align-items: center; gap: 6px;
  font-size: .82rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}
.cart-btn:hover { background: var(--accent-hover); transform: translateY(-1px); }
.cart-btn__label { display: flex; align-items: center; gap: 6px; }
.cart-badge {
  background: #fff;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 800;
  min-width: 20px; height: 20px;
  border-radius: 10px;
  display: none; align-items: center; justify-content: center;
  padding: 0 5px;
}
.cart-badge.visible { display: flex; }

/* =============================================
   HERO
   ============================================= */
.hero {
  margin-top: var(--header-h);
  background: linear-gradient(135deg, #0f1b2d 0%, #1a2e4a 50%, #0f1b2d 100%);
  padding: 80px 0 40px;
  min-height: 480px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.hero__inner {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.hero__tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(22,163,74,.15);
  border: 1px solid rgba(22,163,74,.3);
  color: #ffa07a;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: .8rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -.5px;
}
.hero h1 span { color: var(--accent); }
.hero__sub {
  font-size: 1.05rem;
  color: rgba(255,255,255,.65);
  margin-bottom: 36px;
}
.hero__search {
  display: flex;
  background: #fff;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  max-width: 580px;
  margin: 0 auto 40px;
}
.hero__search input {
  flex: 1;
  border: none;
  padding: 16px 20px;
  font-size: 1rem;
  outline: none;
  color: var(--text);
}
.hero__search button {
  padding: 0 28px;
  background: var(--accent);
  color: #fff;
  font-weight: 700;
  font-size: .95rem;
  transition: background var(--transition);
  white-space: nowrap;
}
.hero__search button:hover { background: var(--accent-hover); }
.hero__stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: center;
}
.hero-stat__num {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  display: block;
}
.hero-stat__label {
  font-size: .8rem;
  color: rgba(255,255,255,.5);
  text-transform: uppercase;
  letter-spacing: .5px;
}

/* =============================================
   SECTIONS
   ============================================= */
.section { padding: 60px 0; }
.section--sm { padding: 40px 0; }
.section--grey { background: var(--bg); }
.section--white { background: #fff; }
.section--dark { background: var(--primary); color: #fff; }
.section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 12px;
}

/* =============================================
   CATEGORY CARDS
   ============================================= */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.category-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1.5px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
  display: block;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}
.category-card__img {
  height: 160px;
  overflow: hidden;
  background: #f0f2f5;
  position: relative;
}
.category-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.category-card:hover .category-card__img img { transform: scale(1.05); }
.category-card__img--placeholder {
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
}
.category-card__body {
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.category-card__name {
  font-weight: 600;
  font-size: .95rem;
  color: var(--text);
}
.category-card__count {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 2px;
}
.category-card__arrow {
  width: 32px; height: 32px;
  background: var(--accent-light);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  font-size: .8rem;
  flex-shrink: 0;
  transition: all var(--transition);
}
.category-card:hover .category-card__arrow {
  background: var(--accent);
  color: #fff;
}

/* Sub-categories in catalog sidebar */
.cat-group { margin-bottom: 8px; }
.cat-group__title {
  font-weight: 700;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  padding: 8px 12px 4px;
}
.cat-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  font-size: .9rem;
  color: var(--text-2);
}
.cat-item:hover, .cat-item.active {
  background: var(--accent-light);
  color: var(--accent);
}
.cat-item .count {
  font-size: .75rem;
  background: var(--border);
  padding: 2px 7px;
  border-radius: 10px;
  color: var(--text-muted);
}
.cat-item.active .count { background: var(--accent); color: #fff; }

/* =============================================
   PRODUCT CARDS
   ============================================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.product-card {
  background: var(--card);
  border-radius: var(--radius);
  border: 1.5px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}
.product-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #c5cfe0;
}
.product-card__img {
  aspect-ratio: 1;
  background: #f8f9fb;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
}
.product-card__img img {
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform .3s ease;
}
.product-card:hover .product-card__img img { transform: scale(1.06); }
.product-card__img--empty {
  font-size: 3rem;
  color: var(--border);
}
.product-card--unavailable .product-card__img img {
  opacity: .5;
  filter: grayscale(.4);
}
.product-card__unavailable {
  font-size: .8rem;
  color: var(--text-muted);
  padding: 6px 0;
}
.product-card__body {
  padding: 14px 14px 0;
  flex: 1;
}
.product-card__vendor {
  font-size: .72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .4px;
  margin-bottom: 5px;
}
.product-card__name {
  font-size: .88rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 10px;
  cursor: pointer;
}
.product-card__name:hover { color: var(--accent); }
.product-card__price {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent);
}
.product-card__price-sub {
  font-size: .75rem;
  color: var(--text-muted);
}
.product-card__footer {
  padding: 12px 14px 14px;
  display: flex;
  gap: 8px;
}
.product-card__footer .btn { flex: 1; padding: 8px 10px; font-size: .8rem; }

/* Skeleton loader */
.skeleton {
  background: linear-gradient(90deg, #f0f2f5 25%, #e8eaed 50%, #f0f2f5 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.4s infinite;
  border-radius: 4px;
}
@keyframes skeleton-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.product-card--skeleton .product-card__img { background: #f0f2f5; }
.skeleton-line { height: 12px; margin: 6px 0; }
.skeleton-line--title { height: 14px; width: 90%; }
.skeleton-line--short { width: 50%; }

/* =============================================
   CATALOG PAGE
   ============================================= */
.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  margin-top: calc(var(--header-h) + 20px);
  padding-bottom: 60px;
}
.catalog-sidebar {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  height: calc(100vh - var(--header-h) - 40px);
  overflow-y: auto;
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--border);
  padding: 20px 0;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.catalog-sidebar::-webkit-scrollbar { width: 4px; }
.catalog-sidebar::-webkit-scrollbar-track { background: transparent; }
.catalog-sidebar::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.sidebar-section { padding: 0 16px 16px; border-bottom: 1px solid var(--border-light); margin-bottom: 16px; }
.sidebar-section:last-child { border-bottom: none; margin-bottom: 0; }
.sidebar-section__title {
  font-weight: 700;
  font-size: .8rem;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.filter-range { display: flex; gap: 8px; align-items: center; }
.filter-range input[type="number"] {
  width: 90px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 7px 10px;
  font-size: .85rem;
  color: var(--text);
  outline: none;
  transition: border-color var(--transition);
}
.filter-range input:focus { border-color: var(--accent); }
.filter-range span { color: var(--text-muted); font-size: .85rem; }

.filter-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
}
.filter-toggle label { font-size: .9rem; color: var(--text-2); cursor: pointer; font-weight: 500; }
.toggle-switch {
  width: 42px; height: 24px;
  background: var(--border);
  border-radius: 12px;
  position: relative;
  transition: background var(--transition);
  flex-shrink: 0;
  cursor: pointer;
}
.toggle-switch.on { background: var(--success); }
.toggle-switch::after {
  content: '';
  position: absolute;
  width: 18px; height: 18px;
  background: #fff;
  border-radius: 50%;
  top: 3px; left: 3px;
  transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,.2);
}
.toggle-switch.on::after { transform: translateX(18px); }

.vendor-list { max-height: 180px; overflow-y: auto; }
.vendor-check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  cursor: pointer;
  font-size: .88rem;
  color: var(--text-2);
}
.vendor-check input[type="checkbox"] { accent-color: var(--accent); width: 15px; height: 15px; cursor: pointer; }

.catalog-main {}
.catalog-filter-btn { display: none; }
.catalog-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 12px;
}
.catalog-topbar__info {
  font-size: .9rem;
  color: var(--text-muted);
}
.catalog-topbar__info strong { color: var(--text); }
.sort-select {
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: .88rem;
  color: var(--text);
  background: var(--card);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition);
}
.sort-select:focus { border-color: var(--accent); }

/* Breadcrumbs */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb__sep { color: var(--border); }
.breadcrumb__current { color: var(--text-2); font-weight: 500; }

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.page-btn {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: .88rem;
  font-weight: 600;
  border: 1.5px solid var(--border);
  background: var(--card);
  color: var(--text-2);
  transition: all var(--transition);
  cursor: pointer;
}
.page-btn:hover { border-color: var(--accent); color: var(--accent); }
.page-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.page-btn:disabled { opacity: .4; cursor: not-allowed; }

/* =============================================
   PRODUCT PAGE
   ============================================= */
.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  margin-top: calc(var(--header-h) + 30px);
  padding-bottom: 60px;
}
.gallery {
  position: sticky;
  top: calc(var(--header-h) + 20px);
  align-self: start;
}
.gallery__main {
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--border);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
  margin-bottom: 12px;
  cursor: zoom-in;
}
.gallery__main img {
  width: 100%; height: 100%;
  object-fit: contain;
  transition: transform .3s ease;
}
.gallery__main:hover img { transform: scale(1.05); }
.gallery__thumbs {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
  padding-bottom: 4px;
}
.gallery__thumbs::-webkit-scrollbar { display: none; }
.gallery__thumb {
  width: 72px; height: 72px;
  border-radius: var(--radius-sm);
  border: 2px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color var(--transition);
  background: #f8f9fb;
  display: flex; align-items: center; justify-content: center;
  padding: 4px;
}
.gallery__thumb img { width: 100%; height: 100%; object-fit: contain; }
.gallery__thumb.active { border-color: var(--accent); }
.gallery__thumb:hover { border-color: var(--accent); }

.product-info {}
.product-info__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.product-info__vendor {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.product-info__code {
  font-size: .8rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 4px;
}
.product-info h1 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text);
}
.product-info__price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 24px;
}
.product-info__price {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
}
.product-info__currency { font-size: 1.2rem; color: var(--text-muted); font-weight: 500; }
.product-info__actions {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}
.product-info__actions .btn { flex: 1; padding: 13px 20px; font-size: .95rem; }
.product-info__desc {
  font-size: .9rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.specs-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.specs-table tr:nth-child(even) td { background: var(--bg); }
.specs-table td { padding: 9px 12px; color: var(--text-2); border-bottom: 1px solid var(--border-light); word-break: break-word; }
.specs-table td:first-child { color: var(--text-muted); width: 40%; font-weight: 500; }

/* =============================================
   CART SIDEBAR
   ============================================= */
.cart-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 1999;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.cart-overlay.open { opacity: 1; pointer-events: auto; }
.cart-sidebar {
  position: fixed;
  top: 0; right: 0;
  width: 400px; max-width: 95vw;
  height: 100vh;
  background: var(--card);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform .3s ease;
  box-shadow: var(--shadow-xl);
}
.cart-sidebar.open { transform: translateX(0); }
.cart-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}
.cart-header h3 { font-size: 1.1rem; font-weight: 700; }
.cart-close {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  color: var(--text-muted);
  transition: all var(--transition);
}
.cart-close:hover { background: var(--border); color: var(--text); }
.cart-items { flex: 1; overflow-y: auto; padding: 16px 24px; }
.cart-item {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-light);
}
.cart-item__img {
  width: 64px; height: 64px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--border);
  overflow: hidden;
  flex-shrink: 0;
  background: #f8f9fb;
  display: flex; align-items: center; justify-content: center;
}
.cart-item__img img { width: 100%; height: 100%; object-fit: contain; }
.cart-item__info { flex: 1; }
.cart-item__name { font-size: .85rem; font-weight: 600; line-height: 1.3; margin-bottom: 4px; color: var(--text); }
.cart-item__price { font-size: .9rem; font-weight: 700; color: var(--accent); margin-bottom: 6px; }
.cart-item__qty {
  display: flex;
  align-items: center;
  gap: 0;
}
.cart-item__qty button {
  width: 26px; height: 26px;
  border: 1.5px solid var(--border);
  background: var(--bg);
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all var(--transition);
}
.cart-item__qty button:hover { border-color: var(--accent); color: var(--accent); }
.cart-item__qty span {
  min-width: 28px;
  text-align: center;
  font-size: .9rem;
  font-weight: 700;
}
.cart-item__remove { color: var(--text-muted); font-size: 1.1rem; align-self: flex-start; transition: color var(--transition); }
.cart-item__remove:hover { color: var(--danger); }
.cart-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}
.cart-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 16px;
}
.cart-total span { color: var(--text-muted); }
.cart-total strong { font-size: 1.4rem; font-weight: 800; color: var(--text); }
.cart-empty {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}
.cart-empty svg { opacity: .2; margin: 0 auto 16px; }

/* =============================================
   ORDER MODAL
   ============================================= */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 3000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--card);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 480px;
  padding: 32px;
  transform: scale(.95) translateY(10px);
  transition: transform .3s ease;
  position: relative;
}
.modal-overlay.open .modal { transform: scale(1) translateY(0); }
.modal__close {
  position: absolute;
  top: 16px; right: 16px;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--bg);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: all var(--transition);
}
.modal__close:hover { background: var(--border); color: var(--text); }
.modal h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.modal__product-name {
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text-2);
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
  font-size: .9rem;
  color: var(--text);
  background: var(--card);
  outline: none;
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(22,163,74,.1); }
.form-group textarea { resize: vertical; min-height: 80px; }
.form-group .hint { font-size: .78rem; color: var(--text-muted); margin-top: 4px; }

.modal-success {
  text-align: center;
  padding: 20px 0;
  display: none;
}
.modal-success.show { display: block; }
.modal-success__icon {
  width: 72px; height: 72px;
  background: var(--success-bg);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
  font-size: 2rem;
  color: var(--success);
}
.modal-success h4 { font-size: 1.2rem; font-weight: 700; margin-bottom: 8px; }
.modal-success p { font-size: .9rem; color: var(--text-muted); }

/* =============================================
   CHAT WIDGET
   ============================================= */
.chat-fab {
  position: fixed;
  bottom: 28px; right: 28px;
  width: 58px; height: 58px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 4px 20px rgba(22,163,74,.5);
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1.4rem;
  z-index: 999;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.chat-fab:hover { transform: scale(1.1); box-shadow: 0 6px 25px rgba(22,163,74,.6); }
.chat-fab .badge {
  position: absolute;
  top: -4px; right: -4px;
  width: 18px; height: 18px;
  background: var(--success);
  border-radius: 50%;
  border: 2px solid #fff;
}
.chat-panel {
  position: fixed;
  bottom: 100px; right: 28px;
  width: 360px; max-width: calc(100vw - 40px);
  height: 500px;
  background: var(--card);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  z-index: 998;
  transform: scale(.9) translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: all .25s ease;
  overflow: hidden;
  border: 1.5px solid var(--border);
}
.chat-panel.open {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.chat-panel__head {
  background: var(--primary);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.chat-panel__avatar {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.chat-panel__name {
  font-weight: 600;
  color: #fff;
  font-size: .95rem;
}
.chat-panel__status {
  font-size: .75rem;
  color: rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  gap: 4px;
}
.chat-panel__status::before {
  content: '';
  width: 7px; height: 7px;
  background: #48bb78;
  border-radius: 50%;
  display: inline-block;
}
.chat-panel__close {
  margin-left: auto;
  color: rgba(255,255,255,.6);
  font-size: 1.2rem;
  transition: color var(--transition);
}
.chat-panel__close:hover { color: #fff; }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.chat-msg {
  max-width: 82%;
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.chat-msg--bot { align-self: flex-start; }
.chat-msg--user { align-self: flex-end; }
.chat-msg__bubble {
  padding: 10px 14px;
  border-radius: 16px;
  font-size: .88rem;
  line-height: 1.5;
}
.chat-msg--bot .chat-msg__bubble {
  background: var(--bg);
  color: var(--text);
  border-bottom-left-radius: 4px;
}
.chat-msg--user .chat-msg__bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 4px;
}
.chat-msg__time { font-size: .7rem; color: var(--text-muted); padding: 0 4px; }
.chat-msg--user .chat-msg__time { text-align: right; }
.chat-typing {
  display: flex;
  gap: 5px;
  padding: 12px 16px;
  background: var(--bg);
  border-radius: 16px;
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  width: 60px;
}
.chat-typing span {
  width: 7px; height: 7px;
  background: var(--text-muted);
  border-radius: 50%;
  animation: typing-bounce .8s infinite;
}
.chat-typing span:nth-child(2) { animation-delay: .15s; }
.chat-typing span:nth-child(3) { animation-delay: .3s; }
@keyframes typing-bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
}
.chat-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 0 4px;
}
.chat-quick-btn {
  background: var(--accent-light);
  color: var(--accent);
  border: 1px solid rgba(22,163,74,.2);
  padding: 5px 12px;
  border-radius: 20px;
  font-size: .78rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
}
.chat-quick-btn:hover { background: var(--accent); color: #fff; }
.chat-input-row {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}
.chat-input-row input {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: 20px;
  padding: 9px 16px;
  font-size: .88rem;
  outline: none;
  transition: border-color var(--transition);
}
.chat-input-row input:focus { border-color: var(--accent); }
.chat-send {
  width: 38px; height: 38px;
  background: var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  flex-shrink: 0;
  transition: all var(--transition);
}
.chat-send:hover { background: var(--accent-hover); transform: scale(1.05); }
.chat-send svg { width: 16px; height: 16px; }

/* =============================================
   FEATURES STRIP
   ============================================= */
.features-strip {
  background: var(--primary);
  padding: 32px 0;
}
.features-strip__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.feature-item {
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255,255,255,.8);
}
.feature-item__icon {
  width: 44px; height: 44px;
  background: rgba(22,163,74,.2);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.feature-item__title { font-weight: 600; font-size: .9rem; color: #fff; }
.feature-item__sub { font-size: .78rem; color: rgba(255,255,255,.5); }

/* =============================================
   SEARCH RESULTS PAGE
   ============================================= */
.search-header {
  margin-top: calc(var(--header-h) + 30px);
  padding-bottom: 24px;
}
.search-header h2 { font-size: 1.4rem; font-weight: 700; }
.search-header span { color: var(--text-muted); font-weight: 400; font-size: 1rem; }

/* =============================================
   TOAST
   ============================================= */
.toast-container {
  position: fixed;
  bottom: 100px; left: 50%;
  transform: translateX(-50%);
  z-index: 5000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
  align-items: center;
}
.toast {
  background: #1a202c;
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius);
  font-size: .88rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transform: translateY(10px);
  transition: all .3s ease;
  pointer-events: auto;
  min-width: 220px;
  text-align: center;
  justify-content: center;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast--success { background: var(--success); }
.toast--error { background: var(--danger); }

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--primary);
  color: rgba(255,255,255,.7);
  padding: 50px 0 28px;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer__brand .logo { margin-bottom: 14px; }
.footer__brand p { font-size: .88rem; line-height: 1.7; max-width: 240px; }
.footer h4 {
  color: #fff;
  font-size: .85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: 14px;
}
.footer ul li { margin-bottom: 8px; }
.footer ul a { font-size: .88rem; transition: color var(--transition); }
.footer ul a:hover { color: var(--accent); }
.footer__contact li { font-size: .88rem; display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.footer__bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .82rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* =============================================
   UTILITY
   ============================================= */
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.mt-auto { margin-top: auto; }
.divider { height: 1px; background: var(--border); margin: 20px 0; }
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
}
.tag--orange { background: var(--accent-light); color: var(--accent); }
.tag--green { background: var(--success-bg); color: var(--success); }
.tag--grey { background: var(--bg); color: var(--text-muted); border: 1px solid var(--border); }
.empty-state {
  text-align: center;
  padding: 80px 20px;
  color: var(--text-muted);
}
.empty-state__icon { font-size: 4rem; opacity: .3; margin-bottom: 16px; }
.empty-state h3 { font-size: 1.1rem; font-weight: 600; color: var(--text-2); margin-bottom: 8px; }

/* =============================================
   RESPONSIVE
   ============================================= */
/* ---- BURGER + MOBILE SEARCH BUTTONS ---- */
.burger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: #fff;
}
.burger-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all .25s;
}
.mobile-search-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px 8px;
  color: #fff;
  align-items: center;
}

/* ---- MOBILE MENU DRAWER ---- */
.mobile-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  z-index: 998;
}
.mobile-overlay.open { display: block; }
.mobile-menu {
  position: fixed;
  top: 0; left: 0;
  width: 300px;
  height: 100%;
  background: var(--card);
  z-index: 999;
  transform: translateX(-100%);
  transition: transform .3s cubic-bezier(.4,0,.2,1);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}
.mobile-menu.open { transform: translateX(0); }
.mobile-menu__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  background: var(--primary);
}
.mobile-menu__head button {
  background: none; border: none; cursor: pointer;
  font-size: 1.2rem; color: rgba(255,255,255,.7); padding: 4px;
}
.mobile-menu__search {
  display: flex;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}
.mobile-menu__search input {
  flex: 1;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: .9rem;
  font-family: inherit;
  outline: none;
  background: var(--bg);
  color: var(--text);
}
.mobile-menu__search button {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-weight: 600;
  cursor: pointer;
  font-size: .85rem;
  font-family: inherit;
  white-space: nowrap;
}
.mobile-menu__nav {
  display: flex;
  flex-direction: column;
}
.mobile-menu__nav a {
  padding: 16px 20px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  transition: background var(--transition);
}
.mobile-menu__nav a:hover,
.mobile-menu__nav a.active { background: var(--accent-light); color: var(--accent); }

@media (max-width: 1024px) {
  .catalog-layout { grid-template-columns: 220px 1fr; gap: 20px; }
  .product-layout { grid-template-columns: 1fr; gap: 28px; }
  .gallery { position: static; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
}
@media (max-width: 768px) {
  :root { --header-h: 60px; }

  /* Header */
  .header__inner { grid-template-columns: auto 1fr auto; gap: 12px; }
  .header__search { display: none; }
  .header__search.mobile-open {
    display: flex !important;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    z-index: 200;
    background: var(--primary);
    padding: 10px 16px;
    border-bottom: 2px solid var(--accent);
    box-shadow: 0 4px 12px rgba(0,0,0,.3);
  }
  .header__nav { display: none; }
  .burger-btn { display: flex; }
  .mobile-search-btn { display: flex; }
  .cart-btn span:not(.cart-badge) { display: none; }

  /* Hero */
  .hero { padding: 40px 0 110px; }
  .hero h1 { font-size: 1.8rem; }
  .hero__search { flex-direction: column; gap: 10px; }
  .hero__search input,
  .hero__search button { width: 100%; }
  .hero__search button { padding: 16px; font-size: 1rem; min-height: 52px; }

  /* Hero stats 2x2 grid */
  .hero__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 24px; margin-top: 24px; }
  .hero-stat__num { font-size: 1.4rem; }
  .hero-stat__label { font-size: .7rem; }

  /* Catalog filter button — only mobile */
  .catalog-filter-btn { display: inline-flex !important; }

  /* Catalog sidebar — mobile overlay */
  .catalog-layout { grid-template-columns: 1fr; }
  .catalog-sidebar {
    position: fixed;
    top: 0; left: 0;
    width: 300px;
    height: 100%;
    z-index: 997;
    border-radius: 0;
    transform: translateX(-100%);
    transition: transform .3s cubic-bezier(.4,0,.2,1);
    padding-top: 16px;
  }
  .catalog-sidebar.open { transform: translateX(0); }
  #mobileFilterBtn { display: block !important; }
  #mobileFilterBtn button { box-shadow: 0 4px 16px rgba(0,0,0,.3); }

  /* Product cards */
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .product-card__img { height: 150px; }
  .product-card__footer { flex-direction: column; gap: 6px; }
  .product-card__footer .btn { width: 100%; justify-content: center; text-align: center; }

  /* Product detail */
  .product-info__actions { flex-direction: column; gap: 10px; }
  .product-info__actions .btn { width: 100%; justify-content: center; }
  .specs-table { font-size: .82rem; }

  /* Cart */
  .cart-sidebar { width: 100%; right: 0; }

  /* Footer */
  .footer__grid { grid-template-columns: 1fr; gap: 24px; }

  /* Chat */
  .chat-panel { bottom: 90px; right: 16px; width: calc(100vw - 32px); }
}
@media (max-width: 480px) {
  .container { padding: 0 12px; }
  .category-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .products-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .product-card { padding: 10px; }
  .product-card__img { height: 130px; }
  .product-card__name { font-size: .78rem; }
  .product-card__price { font-size: .95rem; }
  .hero__search input { font-size: .9rem; }
  .cart-sidebar { width: 100%; }
  .modal { padding: 20px 16px; }
  .hero h1 { font-size: 1.5rem; }
}