:root {
  --color-bg: #ffffff;
  --color-surface: #f7f7f8;
  --color-border: #e6e6e9;
  --color-text: #17181a;
  --color-text-muted: #6b6d73;
  --color-primary: #17181a;
  --color-primary-contrast: #ffffff;
  --color-accent: #c0392b;
  --color-success: #1e8e3e;
  --color-danger: #c0392b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.08);
  --max-width: 1280px;
  --font-body: 'Vazirmatn', 'Segoe UI', Tahoma, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 16px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}
.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
}
.site-header__logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.site-header__actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  cursor: pointer;
}
.icon-btn .badge {
  position: absolute;
  top: -4px;
  left: -4px;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  border-radius: 999px;
  min-width: 18px;
  height: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
}
.site-nav {
  display: none;
  gap: 20px;
  padding: 0 16px 12px;
  overflow-x: auto;
}
.site-nav a { font-size: 14px; font-weight: 600; color: var(--color-text-muted); white-space: nowrap; }
.site-nav a:hover { color: var(--color-text); }

.search-form {
  flex: 1;
  max-width: 420px;
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  background: var(--color-surface);
}
.search-form input {
  border: none;
  background: transparent;
  outline: none;
  flex: 1;
  font-family: var(--font-body);
  font-size: 14px;
}
.mobile-search { padding: 0 16px 12px; }

@media (min-width: 900px) {
  .site-nav { display: flex; }
  .mobile-search { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.05s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.98); }
.btn-primary { background: var(--color-primary); color: var(--color-primary-contrast); }
.btn-primary:hover { opacity: 0.9; }
.btn-outline { background: transparent; border-color: var(--color-border); color: var(--color-text); }
.btn-outline:hover { background: var(--color-surface); }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: var(--radius-sm); }

/* ---------- Hero ---------- */
.hero-slider { position: relative; background: var(--color-surface); }
.hero-slide {
  display: flex;
  align-items: center;
  min-height: 320px;
  background-size: cover;
  background-position: center;
  position: relative;
  color: #fff;
}
.hero-slide::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.55), rgba(0,0,0,0.15));
}
.hero-slide__content { position: relative; z-index: 1; padding: 32px; max-width: 480px; }
.hero-slide__content h2 { font-size: 26px; margin: 0 0 8px; }
.hero-slide__content p { margin: 0 0 20px; opacity: 0.9; }
@media (min-width: 900px) {
  .hero-slide { min-height: 420px; }
  .hero-slide__content h2 { font-size: 36px; }
}

/* ---------- Sections ---------- */
.section { padding: 36px 0; }
.section__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 18px;
}
.section__head h2 { font-size: 20px; margin: 0; }
.section__head a { font-size: 13px; font-weight: 700; color: var(--color-text-muted); }

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
@media (min-width: 700px) { .category-grid { grid-template-columns: repeat(4, 1fr); } }
.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-surface);
}
.category-card img { width: 100%; height: 100%; object-fit: cover; }
.category-card span {
  position: absolute; bottom: 10px; right: 12px; left: 12px;
  color: #fff; font-weight: 700; font-size: 15px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.6);
}
.category-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.45), transparent 60%);
}

/* ---------- Product grid/card ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
@media (min-width: 700px) { .product-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1100px) { .product-grid { grid-template-columns: repeat(4, 1fr); } }

.product-card {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg);
}
.product-card__img-wrap { position: relative; background: var(--color-surface); aspect-ratio: 3/4; overflow: hidden; border-radius: var(--radius-md); }
.product-card__img-wrap img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.product-card:hover .product-card__img-wrap img { transform: scale(1.04); }
.product-card__badge {
  position: absolute; top: 8px; right: 8px;
  background: var(--color-accent); color: #fff;
  font-size: 11px; font-weight: 800; padding: 3px 8px; border-radius: 999px;
}
.product-card__body { padding: 10px 2px; }
.product-card__name { font-size: 14px; font-weight: 600; margin: 0 0 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.product-card__prices { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.price-current { font-weight: 800; }
.price-old { text-decoration: line-through; color: var(--color-text-muted); font-size: 12px; }
.product-card__stock-empty { color: var(--color-text-muted); font-size: 12px; }

/* ---------- Filters / shop ---------- */
.shop-layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 900px) { .shop-layout { grid-template-columns: 240px 1fr; } }
.filters { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 16px; height: max-content; }
.filters h3 { font-size: 14px; margin: 16px 0 8px; }
.filters h3:first-child { margin-top: 0; }
.filter-group label { display: flex; align-items: center; gap: 8px; font-size: 13px; padding: 4px 0; color: var(--color-text-muted); cursor: pointer; }
.filter-group label:hover { color: var(--color-text); }
.color-swatch { display: inline-block; width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--color-border); }
.price-range-inputs { display: flex; gap: 8px; }
.price-range-inputs input { width: 100%; }

.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 16px; gap: 12px; flex-wrap: wrap; }
.toolbar select, .toolbar input, select, input[type=text], input[type=number], input[type=tel], input[type=email], input[type=password], textarea {
  font-family: var(--font-body);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  font-size: 14px;
  background: var(--color-bg);
  color: var(--color-text);
}
textarea { width: 100%; resize: vertical; }

.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 24px; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 36px; height: 36px; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border); font-size: 13px; font-weight: 700;
}
.pagination .active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* ---------- Product detail ---------- */
.product-detail { display: grid; grid-template-columns: 1fr; gap: 28px; }
@media (min-width: 900px) { .product-detail { grid-template-columns: 1fr 1fr; } }
.gallery-main { border-radius: var(--radius-lg); overflow: hidden; aspect-ratio: 3/4; background: var(--color-surface); margin-bottom: 10px; }
.gallery-main img { width: 100%; height: 100%; object-fit: cover; }
.gallery-thumbs { display: flex; gap: 8px; overflow-x: auto; }
.gallery-thumbs img { width: 64px; height: 80px; object-fit: cover; border-radius: var(--radius-sm); cursor: pointer; border: 2px solid transparent; }
.gallery-thumbs img.active { border-color: var(--color-primary); }

.product-info h1 { font-size: 22px; margin: 0 0 6px; }
.product-info .brand { color: var(--color-text-muted); font-size: 13px; margin-bottom: 12px; }
.price-block { display: flex; align-items: center; gap: 10px; margin: 14px 0; font-size: 22px; font-weight: 800; }
.price-block .price-old { font-size: 15px; }
.discount-chip { background: var(--color-accent); color: #fff; font-size: 12px; font-weight: 800; padding: 3px 8px; border-radius: 6px; }

.option-group { margin: 18px 0; }
.option-group label.title { display: block; font-weight: 700; margin-bottom: 8px; font-size: 14px; }
.swatch-list { display: flex; gap: 8px; flex-wrap: wrap; }
.swatch {
  width: 34px; height: 34px; border-radius: 50%; border: 2px solid var(--color-border);
  cursor: pointer; position: relative;
}
.swatch.selected { border-color: var(--color-primary); box-shadow: 0 0 0 2px #fff inset; }
.size-list { display: flex; gap: 8px; flex-wrap: wrap; }
.size-chip {
  min-width: 44px; padding: 8px 12px; text-align: center; border-radius: var(--radius-sm);
  border: 1px solid var(--color-border); font-size: 13px; font-weight: 700; cursor: pointer;
}
.size-chip.selected { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.size-chip.disabled { opacity: 0.35; text-decoration: line-through; cursor: not-allowed; }
.stock-note { font-size: 12px; color: var(--color-text-muted); margin-top: 8px; }
.qty-stepper { display: flex; align-items: center; border: 1px solid var(--color-border); border-radius: var(--radius-sm); width: max-content; }
.qty-stepper button { width: 36px; height: 36px; border: none; background: transparent; font-size: 18px; cursor: pointer; }
.qty-stepper input { width: 44px; text-align: center; border: none; font-size: 14px; }
.product-tabs { margin-top: 28px; border-top: 1px solid var(--color-border); padding-top: 20px; }
.product-tabs h3 { font-size: 15px; margin: 0 0 10px; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table td { padding: 8px 0; border-bottom: 1px solid var(--color-border); }
.spec-table td:first-child { color: var(--color-text-muted); width: 40%; }

/* ---------- Cart ---------- */
.cart-item { display: grid; grid-template-columns: 72px 1fr; gap: 12px; padding: 14px 0; border-bottom: 1px solid var(--color-border); }
.cart-item img { width: 72px; height: 90px; object-fit: cover; border-radius: var(--radius-sm); background: var(--color-surface); }
.cart-item__meta { font-size: 13px; color: var(--color-text-muted); }
.cart-item__row { display: flex; align-items: center; justify-content: space-between; margin-top: 8px; }
.cart-summary { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px; height: max-content; }
.summary-row { display: flex; justify-content: space-between; font-size: 14px; padding: 6px 0; }
.summary-row.total { font-weight: 800; font-size: 17px; border-top: 1px solid var(--color-border); margin-top: 8px; padding-top: 12px; }
.cart-layout { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 900px) { .cart-layout { grid-template-columns: 2fr 1fr; } }

/* ---------- Checkout ---------- */
.checkout-steps { display: flex; gap: 8px; margin-bottom: 24px; flex-wrap: wrap; }
.checkout-steps span {
  font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 999px;
  background: var(--color-surface); color: var(--color-text-muted);
}
.checkout-steps span.active { background: var(--color-primary); color: #fff; }
.form-grid { display: grid; grid-template-columns: 1fr; gap: 14px; }
@media (min-width: 700px) { .form-grid.two-col { grid-template-columns: 1fr 1fr; } }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 13px; font-weight: 700; }
.shipping-option {
  display: flex; align-items: center; justify-content: space-between;
  border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 14px 16px; margin-bottom: 10px; cursor: pointer;
}
.shipping-option.selected { border-color: var(--color-primary); background: var(--color-surface); }

.empty-state { text-align: center; padding: 60px 20px; color: var(--color-text-muted); }

/* ---------- Alerts ---------- */
.alert { border-radius: var(--radius-sm); padding: 12px 16px; font-size: 14px; margin-bottom: 16px; }
.alert-error { background: #fdecea; color: #a12b21; }
.alert-success { background: #eaf7ed; color: #1e6b32; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-surface); border-top: 1px solid var(--color-border); padding: 32px 0; margin-top: 48px; font-size: 13px; color: var(--color-text-muted); }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 24px; }
@media (min-width: 700px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
.footer-grid h4 { color: var(--color-text); font-size: 14px; margin: 0 0 10px; }
.footer-grid a { display: block; padding: 4px 0; }

/* ---------- Mobile bottom nav ---------- */
.mobile-tabbar {
  position: fixed; bottom: 0; right: 0; left: 0; z-index: 50;
  display: flex; background: var(--color-bg); border-top: 1px solid var(--color-border);
  padding: 6px 0 max(6px, env(safe-area-inset-bottom));
}
.mobile-tabbar a { flex: 1; text-align: center; font-size: 11px; color: var(--color-text-muted); padding: 4px 0; }
.mobile-tabbar a.active { color: var(--color-primary); font-weight: 700; }
@media (min-width: 900px) { .mobile-tabbar { display: none; } }
body { padding-bottom: 56px; }
@media (min-width: 900px) { body { padding-bottom: 0; } }

table.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data-table th, table.data-table td { padding: 10px 8px; border-bottom: 1px solid var(--color-border); text-align: right; }
table.data-table th { color: var(--color-text-muted); font-weight: 700; font-size: 12px; }
.status-tag { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 11px; font-weight: 700; background: var(--color-surface); }