/* ==========================================================================
   Amantiz SHOP - Основная дизайн-система и стили
   Чистый CSS, адаптивная верстка, полная автономность без внешних шрифтов/CDN
   ========================================================================== */

:root {
  --color-primary: #0f172a;
  --color-primary-dark: #020617;
  --color-primary-light: #1e293b;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: #eff6ff;
  --color-secondary: #f59e0b;
  --color-secondary-hover: #d97706;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --color-warning: #f59e0b;

  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-surface-subtle: #f1f5f9;
  --color-border: #e2e8f0;
  --color-border-hover: #cbd5e1;

  --color-text-main: #0f172a;
  --color-text-muted: #64748b;
  --color-text-light: #94a3b8;
  --color-text-inverse: #ffffff;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-hover: 0 14px 28px rgba(15, 23, 42, 0.1), 0 10px 10px rgba(15, 23, 42, 0.04);

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-smooth: 0.35s cubic-bezier(0.16, 1, 0.3, 1);

  --container-max: 1280px;
  --header-height: 72px;
}

/* CSS Reset & Defaults */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sans);
  color: var(--color-text-main);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

main {
  flex: 1;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.announcement-bar {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 16px;
  letter-spacing: 0.02em;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.brand-logo .tag {
  font-size: 11px;
  font-weight: 700;
  background-color: #eff6ff;
  color: var(--color-accent);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  padding: 8px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--color-accent);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 2px;
}

.header-search {
  position: relative;
  flex: 1;
  max-width: 360px;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.search-icon-svg {
  position: absolute;
  left: 12px;
  width: 18px;
  height: 18px;
  color: var(--color-text-light);
  pointer-events: none;
}

.search-input {
  width: 100%;
  padding: 9px 12px 9px 38px;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: 14px;
  transition: all var(--transition-fast);
}

.search-input:focus {
  background-color: var(--color-surface);
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  outline: none;
}

.search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: none;
  max-height: 380px;
  overflow-y: auto;
  z-index: 150;
}

.search-dropdown.active {
  display: block;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.search-result-item:hover {
  background-color: var(--color-surface-subtle);
}

.search-result-thumb {
  width: 44px;
  height: 44px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  background-color: var(--color-surface-subtle);
}

.search-result-info {
  flex: 1;
}

.search-result-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.3;
}

.search-result-price {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
}

.search-view-all {
  display: block;
  text-align: center;
  padding: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-accent);
  background-color: var(--color-surface-subtle);
}

.search-no-results {
  padding: 16px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 14px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-action-btn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  color: var(--color-primary);
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.header-action-btn:hover {
  background-color: var(--color-surface);
  border-color: var(--color-border-hover);
  color: var(--color-accent);
}

.cart-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background-color: var(--color-accent);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-surface);
  line-height: 1;
}

.badge-bounce {
  animation: bounce 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes bounce {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.3); }
}

.mobile-menu-toggle {
  display: none;
}

/* Mobile Drawer */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  max-width: 85vw;
  background-color: var(--color-surface);
  z-index: 210;
  transform: translateX(-100%);
  transition: transform var(--transition-smooth);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
}

.mobile-drawer.active {
  transform: translateX(0);
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid var(--color-border);
}

.drawer-close {
  font-size: 24px;
  color: var(--color-text-muted);
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  padding: 16px 0;
  overflow-y: auto;
}

.drawer-nav a {
  padding: 12px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
}

.drawer-nav a:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-accent);
}

/* ==========================================================================
   Buttons & Common Components
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  font-size: 15px;
  transition: all var(--transition-normal);
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  box-shadow: 0 6px 16px rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background-color: var(--color-surface-subtle);
  border-color: var(--color-border-hover);
}

.btn-dark {
  background-color: var(--color-primary);
  color: #ffffff;
}

.btn-dark:hover {
  background-color: var(--color-primary-dark);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 16px;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-primary {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
}

.badge-secondary {
  background-color: #fef3c7;
  color: #b45309;
}

.badge-success {
  background-color: #d1fae5;
  color: #065f46;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  color: #ffffff;
  padding: 64px 0 72px 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 48px;
}

.hero-content h1 {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 16px 0 20px 0;
}

.hero-content p {
  font-size: 18px;
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-image-wrap {
  position: relative;
}

.hero-image {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Trust / Feature bar */
.features-bar {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 16px;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 2px;
}

.feature-info p {
  font-size: 13px;
  color: var(--color-text-muted);
}

/* ==========================================================================
   Section Headers & Category Cards
   ========================================================================== */
.section-header {
  margin-bottom: 36px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.section-title-wrap h2 {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.section-title-wrap p {
  font-size: 15px;
  color: var(--color-text-muted);
}

.categories-section {
  padding: 60px 0;
}

.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 18px;
}

.category-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  text-align: center;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.category-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.category-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent-light), #e0e7ff);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-main);
}

/* ==========================================================================
   Product Cards & Grid
   ========================================================================== */
.products-section {
  padding: 60px 0 80px 0;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 24px;
}

.product-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
  position: relative;
}

.product-card:hover {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.product-card-media {
  position: relative;
  width: 100%;
  padding-top: 80%; /* 4:3 Aspect Ratio approx */
  background-color: #f8fafc;
  overflow: hidden;
}

.product-card-img-link {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}

.product-card:hover .product-card-img {
  transform: scale(1.06);
}

.product-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background-color: var(--color-primary);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  z-index: 2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.discount-pill {
  position: absolute;
  top: 12px;
  right: 12px;
  background-color: var(--color-danger);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  z-index: 2;
}

.product-card-body {
  padding: 18px 20px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.product-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
  font-size: 12px;
}

.product-category-tag {
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.product-rating {
  color: var(--color-secondary);
  font-weight: 700;
}

.product-rating .rating-count {
  color: var(--color-text-light);
  font-weight: 500;
}

.product-card-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
  color: var(--color-text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-title a:hover {
  color: var(--color-accent);
}

.product-card-tagline {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.4;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.product-price-box {
  display: flex;
  flex-direction: column;
}

.current-price {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-text-main);
}

.original-price {
  font-size: 13px;
  color: var(--color-text-light);
  text-decoration: line-through;
}

.btn-add-to-cart {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--color-surface-subtle);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-fast);
}

.btn-add-to-cart:hover {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

/* ==========================================================================
   Catalog Page Layout & Filters
   ========================================================================== */
.catalog-page {
  padding: 32px 0 80px 0;
}

.catalog-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 32px;
  align-items: flex-start;
}

.catalog-sidebar {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.filter-group {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.filter-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.filter-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.category-filter-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.category-filter-btn {
  text-align: left;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all var(--transition-fast);
}

.category-filter-btn:hover {
  background-color: var(--color-surface-subtle);
  color: var(--color-text-main);
}

.category-filter-btn.active {
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 700;
}

.catalog-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 20px;
}

.catalog-count {
  font-size: 14px;
  color: var(--color-text-muted);
  font-weight: 500;
}

.catalog-sort {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.sort-select {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  font-size: 14px;
  font-weight: 500;
  outline: none;
}

/* ==========================================================================
   Product Detail Page
   ========================================================================== */
.product-detail-page {
  padding: 32px 0 80px 0;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumb a:hover {
  color: var(--color-accent);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: flex-start;
  margin-bottom: 64px;
}

.product-gallery {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.product-main-image-wrap {
  width: 100%;
  height: 480px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.product-main-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-info-panel h1 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.product-tagline {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
}

.product-detail-rating-sku {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.product-detail-price-box {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
}

.product-detail-price {
  font-size: 36px;
  font-weight: 900;
  color: var(--color-primary);
}

.product-detail-old-price {
  font-size: 20px;
  color: var(--color-text-light);
  text-decoration: line-through;
}

.stock-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-success);
  margin-bottom: 24px;
}

.stock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
}

.product-actions-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

.qty-picker {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  overflow: hidden;
}

.qty-btn {
  width: 40px;
  height: 48px;
  font-size: 18px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color var(--transition-fast);
}

.qty-btn:hover {
  background-color: var(--color-surface-subtle);
}

.qty-input {
  width: 48px;
  height: 48px;
  text-align: center;
  font-weight: 700;
  border: none;
  background: transparent;
  outline: none;
}

.product-benefits-list {
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.benefit-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-main);
}

/* Tabs & Product Content */
.product-tabs-nav {
  display: flex;
  gap: 32px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 32px;
}

.tab-btn {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text-muted);
  padding-bottom: 14px;
  position: relative;
  cursor: pointer;
}

.tab-btn.active {
  color: var(--color-accent);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table tr {
  border-bottom: 1px solid var(--color-border);
}

.specs-table td {
  padding: 14px 18px;
  font-size: 15px;
}

.specs-table td:first-child {
  font-weight: 600;
  color: var(--color-text-muted);
  width: 35%;
  background-color: var(--color-surface-subtle);
}

.features-bullet-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 18px;
}

.features-bullet-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  line-height: 1.5;
}

.features-bullet-list li::before {
  content: '✓';
  color: var(--color-accent);
  font-weight: 800;
}

/* Reviews List */
.reviews-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
}

.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.review-author {
  font-weight: 700;
  font-size: 15px;
}

.review-date {
  font-size: 13px;
  color: var(--color-text-light);
}

.review-stars {
  color: var(--color-secondary);
  font-size: 14px;
  margin-bottom: 8px;
}

.review-title {
  font-weight: 700;
  font-size: 15px;
  margin-bottom: 6px;
}

.review-text {
  font-size: 14px;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   Shopping Cart Page
   ========================================================================== */
.cart-page {
  padding: 32px 0 80px 0;
}

.cart-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 36px;
  align-items: flex-start;
}

.cart-items-container {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.cart-item {
  display: grid;
  grid-template-columns: 80px 1fr auto auto auto;
  align-items: center;
  gap: 20px;
  padding: 20px;
  border-bottom: 1px solid var(--color-border);
}

.cart-item:last-child {
  border-bottom: none;
}

.cart-item-img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: var(--radius-md);
  background-color: var(--color-surface-subtle);
}

.cart-item-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 4px;
}

.cart-item-sku {
  font-size: 12px;
  color: var(--color-text-light);
}

.cart-item-price {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text-main);
}

.cart-item-remove {
  color: var(--color-text-light);
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.cart-item-remove:hover {
  color: var(--color-danger);
  background-color: #fee2e2;
}

.cart-summary-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: sticky;
  top: calc(var(--header-height) + 20px);
}

.summary-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 20px;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  margin-bottom: 12px;
  color: var(--color-text-muted);
}

.summary-row.total {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
  border-top: 2px solid var(--color-border);
  padding-top: 16px;
  margin-top: 16px;
}

.promo-form {
  display: flex;
  gap: 8px;
  margin: 20px 0;
}

.promo-input {
  flex: 1;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  text-transform: uppercase;
}

.empty-cart-view {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 64px 20px;
  text-align: center;
}

.empty-cart-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 20px auto;
  color: var(--color-text-light);
}

/* ==========================================================================
   Checkout Modal
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(6px);
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.modal-dialog {
  background-color: var(--color-surface);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-smooth);
}

.modal-backdrop.active .modal-dialog {
  transform: translateY(0);
}

.modal-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-primary);
}

.modal-close {
  font-size: 24px;
  color: var(--color-text-muted);
}

.modal-body {
  padding: 28px;
}

.form-group {
  margin-bottom: 18px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-main);
  margin-bottom: 6px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 15px;
  background-color: var(--color-surface);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  outline: none;
}

.form-radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-radio-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.form-radio-card:hover {
  background-color: var(--color-surface-subtle);
}

.form-radio-card input:checked ~ .form-radio-title {
  color: var(--color-accent);
  font-weight: 700;
}

.order-success-box {
  text-align: center;
  padding: 20px 0;
}

.success-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background-color: #d1fae5;
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px auto;
  font-size: 36px;
}

.order-id-badge {
  display: inline-block;
  background-color: var(--color-surface-subtle);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  margin: 16px 0;
  color: var(--color-accent);
}

/* ==========================================================================
   About & Contact Pages
   ========================================================================== */
.about-hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  padding: 60px 0;
  text-align: center;
}

.about-hero h1 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
}

.about-hero p {
  font-size: 18px;
  color: #94a3b8;
  max-width: 680px;
  margin: 0 auto;
}

.about-content-section {
  padding: 64px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 64px;
}

.about-grid.reverse {
  direction: rtl;
}

.about-grid.reverse > * {
  direction: ltr;
}

.about-img {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin: 48px 0;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
}

.stat-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 15px;
  color: var(--color-text-muted);
  font-weight: 600;
}

.legal-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-top: 48px;
}

.legal-box h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  padding: 48px 0 80px 0;
}

.contact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-item {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-light);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* 404 Page */
.error-page {
  padding: 80px 0;
  text-align: center;
}

.error-code {
  font-size: 110px;
  font-weight: 900;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.05em;
  margin-bottom: 12px;
}

.error-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.error-desc {
  font-size: 16px;
  color: var(--color-text-muted);
  max-width: 500px;
  margin: 0 auto 32px auto;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary-dark);
  color: #94a3b8;
  padding: 64px 0 32px 0;
  border-top: 1px solid #1e293b;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.6;
  max-width: 320px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  padding: 14px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: 14px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  max-width: 360px;
}

.toast.toast-show {
  transform: translateY(0);
  opacity: 1;
}

.toast-success .toast-icon {
  color: var(--color-success);
}

.toast-icon {
  font-weight: 800;
  font-size: 16px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-image {
    height: 320px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalog-layout {
    grid-template-columns: 1fr;
  }
  .product-detail-grid {
    grid-template-columns: 1fr;
  }
  .product-main-image-wrap {
    height: 360px;
  }
  .cart-layout {
    grid-template-columns: 1fr;
  }
  .about-grid, .about-grid.reverse {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .header-search {
    max-width: 200px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .cart-item {
    grid-template-columns: 70px 1fr;
    gap: 12px;
  }
  .cart-item-price, .cart-item-remove {
    grid-column: 2;
  }
}