/* ========================================
   LUXE Store — Stylesheet
   Shopify-inspired ecommerce storefront
   ======================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-primary: #111111;
  --color-primary-hover: #333333;
  --color-accent: #111111;
  --color-text: #1a1a1a;
  --color-text-secondary: #6b7280;
  --color-text-light: #9ca3af;
  --color-bg: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-border: #e5e7eb;
  --color-border-dark: #d1d5db;
  --color-success: #059669;
  --color-error: #dc2626;
  --color-warning: #d97706;
  --color-badge: #dc2626;
  --color-star: #f59e0b;
  --color-overlay: rgba(0, 0, 0, 0.5);

  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', SFMono-Regular, Consolas, 'Liberation Mono', Menlo,
    monospace;

  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.25rem;
  --fs-2xl: 1.5rem;
  --fs-3xl: 1.875rem;
  --fs-4xl: 2.25rem;
  --fs-5xl: 3rem;

  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 8px 10px -6px rgba(0, 0, 0, 0.1);

  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;

  --container-max: 1200px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  font-size: var(--fs-base);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: var(--color-primary-hover);
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

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

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: var(--leading-tight);
  font-weight: var(--fw-semibold);
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* --- Announcement Bar --- */
.announcement-bar {
  background-color: var(--color-primary);
  color: #ffffff;
  text-align: center;
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: 0.02em;
}

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.logo:hover {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 1.5px;
  background: var(--color-primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.cart-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.cart-link:hover {
  color: var(--color-text-secondary);
}

.cart-icon {
  width: 22px;
  height: 22px;
}

.cart-badge {
  position: absolute;
  top: -6px;
  right: -10px;
  background: var(--color-badge);
  color: #ffffff;
  font-size: 10px;
  font-weight: var(--fw-bold);
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  opacity: 0;
  transform: scale(0);
  transition: all var(--transition-base);
}

.cart-badge.visible {
  opacity: 1;
  transform: scale(1);
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-base);
  border-radius: 1px;
}

.mobile-menu-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 520px;
  align-items: center;
}

.hero-content {
  padding: var(--space-16) 0;
}

.hero-eyebrow {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.hero-title {
  font-size: var(--fs-5xl);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--color-text);
}

.hero-subtitle {
  font-size: var(--fs-lg);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero-image {
  position: relative;
  height: 100%;
  min-height: 400px;
}

.hero-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.btn-lg {
  padding: var(--space-4) var(--space-10);
  font-size: var(--fs-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--fs-xs);
}

.btn-block {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* --- Section Layout --- */
.section {
  padding: var(--space-16) 0;
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-10);
}

.section-title {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
}

.section-link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.section-link:hover {
  color: var(--color-text);
}

.section-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-fast);
}

.section-link:hover svg {
  transform: translateX(2px);
}

/* --- Category Cards --- */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.category-card {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
}

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

.category-card:hover img {
  transform: scale(1.05);
}

.category-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.6), transparent);
  display: flex;
  align-items: flex-end;
  padding: var(--space-6);
}

.category-card-title {
  color: #ffffff;
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
}

/* --- Product Grid --- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.product-card {
  position: relative;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
  border: 1px solid var(--color-border);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.product-card-image {
  position: relative;
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

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

.product-card:hover .product-card-image img {
  transform: scale(1.05);
}

.product-card-badge {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
  background: var(--color-primary);
  color: #ffffff;
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-sm);
  letter-spacing: 0.02em;
}

.product-card-quick-add {
  position: absolute;
  bottom: var(--space-3);
  left: var(--space-3);
  right: var(--space-3);
  background: var(--color-bg);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: var(--space-3);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-sm);
  text-align: center;
  cursor: pointer;
  opacity: 0;
  transform: translateY(8px);
  transition: all var(--transition-base);
}

.product-card:hover .product-card-quick-add {
  opacity: 1;
  transform: translateY(0);
}

.product-card-quick-add:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.product-card-info {
  padding: var(--space-4);
}

.product-card-name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
  margin-bottom: var(--space-1);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-name a {
  color: inherit;
}

.product-card-name a:hover {
  color: var(--color-text-secondary);
}

.product-card-price {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
}

.product-card-rating {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
}

.stars {
  display: flex;
  gap: 1px;
}

.star {
  color: var(--color-star);
  font-size: var(--fs-xs);
}

.star.empty {
  color: var(--color-border-dark);
}

.rating-text {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
}

/* --- Shop Page / Filters --- */
.shop-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-10);
  align-items: start;
}

.shop-sidebar {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.filter-group {
  margin-bottom: var(--space-8);
}

.filter-group-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.filter-option {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  cursor: pointer;
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.filter-option:hover {
  color: var(--color-text);
}

.filter-option input[type="checkbox"],
.filter-option input[type="radio"] {
  accent-color: var(--color-primary);
  width: 16px;
  height: 16px;
  cursor: pointer;
}

.filter-option.active {
  color: var(--color-text);
  font-weight: var(--fw-medium);
}

.filter-count {
  margin-left: auto;
  font-size: var(--fs-xs);
  color: var(--color-text-light);
}

.shop-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.shop-result-count {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.shop-sort {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.shop-sort label {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.shop-sort select {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  color: var(--color-text);
  background: var(--color-bg);
  cursor: pointer;
  outline: none;
}

.shop-sort select:focus {
  border-color: var(--color-primary);
}

.shop-products .product-grid {
  grid-template-columns: repeat(3, 1fr);
}

/* Active filters bar */
.active-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.active-filter-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  color: var(--color-text);
}

.active-filter-tag button {
  display: flex;
  align-items: center;
  color: var(--color-text-secondary);
  font-size: var(--fs-xs);
}

.active-filter-tag button:hover {
  color: var(--color-text);
}

.clear-filters {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
  text-decoration: underline;
  cursor: pointer;
  padding: var(--space-1) var(--space-2);
}

.clear-filters:hover {
  color: var(--color-text);
}

/* Mobile filter toggle */
.mobile-filter-toggle {
  display: none;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  background: var(--color-bg);
  cursor: pointer;
  margin-bottom: var(--space-4);
}

.mobile-filter-toggle svg {
  width: 18px;
  height: 18px;
}

/* --- Product Detail Page --- */
.product-detail {
  padding: var(--space-10) 0 var(--space-16);
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* Gallery */
.product-gallery {
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.product-gallery-main {
  aspect-ratio: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-bg-tertiary);
  margin-bottom: var(--space-4);
}

.product-gallery-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-base);
}

.product-gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
}

.product-gallery-thumb {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
  background: var(--color-bg-tertiary);
}

.product-gallery-thumb:hover {
  border-color: var(--color-border-dark);
}

.product-gallery-thumb.active {
  border-color: var(--color-primary);
}

.product-gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Product Info */
.product-info {
  padding-top: var(--space-2);
}

.product-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

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

.product-breadcrumb .separator {
  color: var(--color-text-light);
}

.product-info-title {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-3);
}

.product-info-price {
  font-size: var(--fs-2xl);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-4);
}

.product-info-rating {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.product-info-rating .stars {
  font-size: var(--fs-base);
}

.product-info-rating .rating-value {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
}

.product-info-rating .rating-count {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.product-info-description {
  font-size: var(--fs-base);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* Quantity selector */
.quantity-selector {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-6);
  gap: var(--space-4);
}

.quantity-selector label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
}

.quantity-controls {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.quantity-btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-lg);
  color: var(--color-text);
  transition: background var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
}

.quantity-btn:hover {
  background: var(--color-bg-tertiary);
}

.quantity-btn:disabled {
  color: var(--color-text-light);
  cursor: not-allowed;
}

.quantity-input {
  width: 50px;
  height: 40px;
  text-align: center;
  border: none;
  border-left: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
  outline: none;
  -moz-appearance: textfield;
}

.quantity-input::-webkit-outer-spin-button,
.quantity-input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.product-actions {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.product-actions .btn {
  flex: 1;
}

.product-meta {
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

.product-meta-item {
  display: flex;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-3);
}

.product-meta-item strong {
  color: var(--color-text);
  font-weight: var(--fw-medium);
}

/* --- Cart Page --- */
.cart-page {
  padding: var(--space-10) 0 var(--space-16);
  flex: 1;
}

.cart-page .section-title {
  margin-bottom: var(--space-8);
}

.cart-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-10);
  align-items: start;
}

.cart-items {
  border-top: 1px solid var(--color-border);
}

.cart-item {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border);
  align-items: start;
}

.cart-item-image {
  aspect-ratio: 1;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-tertiary);
}

.cart-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cart-item-details {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.cart-item-name {
  font-size: var(--fs-base);
  font-weight: var(--fw-medium);
}

.cart-item-name a:hover {
  color: var(--color-text-secondary);
}

.cart-item-price {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.cart-item-quantity {
  margin-top: var(--space-2);
}

.cart-item-quantity .quantity-controls {
  display: inline-flex;
}

.cart-item-quantity .quantity-btn {
  width: 32px;
  height: 32px;
  font-size: var(--fs-sm);
}

.cart-item-quantity .quantity-input {
  width: 40px;
  height: 32px;
  font-size: var(--fs-sm);
}

.cart-item-remove {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  text-decoration: underline;
  cursor: pointer;
  margin-top: var(--space-2);
  background: none;
  border: none;
  padding: 0;
}

.cart-item-remove:hover {
  color: var(--color-error);
}

.cart-item-total {
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  text-align: right;
  white-space: nowrap;
}

/* Cart summary */
.cart-summary {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.cart-summary-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.cart-summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-3);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.cart-summary-row.total {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-text);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  margin-bottom: var(--space-6);
}

.cart-summary .btn {
  margin-bottom: var(--space-3);
}

.cart-summary-note {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
  text-align: center;
}

/* Empty cart */
.cart-empty {
  text-align: center;
  padding: var(--space-16) 0;
}

.cart-empty-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  color: var(--color-text-light);
}

.cart-empty h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--space-3);
}

.cart-empty p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
}

/* --- Checkout Page --- */
.checkout-page {
  padding: var(--space-10) 0 var(--space-16);
  flex: 1;
}

.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--space-10);
  align-items: start;
}

.checkout-form-section {
  margin-bottom: var(--space-8);
}

.checkout-section-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.form-row.single {
  grid-template-columns: 1fr;
}

.form-row.triple {
  grid-template-columns: 1fr 1fr 1fr;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text);
}

.form-group label .required {
  color: var(--color-error);
}

.form-group input,
.form-group select {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary);
}

.form-group input.error,
.form-group select.error {
  border-color: var(--color-error);
}

.form-group input.error:focus,
.form-group select.error:focus {
  box-shadow: 0 0 0 1px var(--color-error);
}

.form-error {
  font-size: var(--fs-xs);
  color: var(--color-error);
  display: none;
}

.form-group.has-error .form-error {
  display: block;
}

.form-group input::placeholder {
  color: var(--color-text-light);
}

/* Order summary in checkout */
.checkout-summary {
  background: var(--color-bg-secondary);
  border-radius: var(--radius-md);
  padding: var(--space-8);
  border: 1px solid var(--color-border);
  position: sticky;
  top: calc(var(--header-height) + var(--space-8));
}

.checkout-summary-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: var(--space-6);
}

.checkout-summary-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.checkout-summary-item:last-of-type {
  border-bottom: none;
}

.checkout-item-image {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-tertiary);
  flex-shrink: 0;
  position: relative;
}

.checkout-item-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.checkout-item-qty {
  position: absolute;
  top: -6px;
  right: -6px;
  width: 20px;
  height: 20px;
  background: var(--color-text-secondary);
  color: #fff;
  font-size: 11px;
  font-weight: var(--fw-bold);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.checkout-item-info {
  flex: 1;
  min-width: 0;
}

.checkout-item-name {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.checkout-item-price {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

.checkout-summary-totals {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* --- Confirmation --- */
.confirmation {
  text-align: center;
  padding: var(--space-16) 0;
  max-width: 600px;
  margin: 0 auto;
}

.confirmation-icon {
  width: 80px;
  height: 80px;
  background: #ecfdf5;
  color: var(--color-success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-6);
}

.confirmation-icon svg {
  width: 40px;
  height: 40px;
}

.confirmation h1 {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-4);
}

.confirmation p {
  color: var(--color-text-secondary);
  font-size: var(--fs-lg);
  margin-bottom: var(--space-3);
}

.confirmation .order-number {
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-8);
}

/* --- Toast Notification --- */
.toast {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  background: var(--color-primary);
  color: #ffffff;
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  box-shadow: var(--shadow-xl);
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-slow);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

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

.toast svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* --- Page Header (Breadcrumb pages) --- */
.page-header {
  background: var(--color-bg-secondary);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--color-border);
}

.page-header .breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}

.page-header .breadcrumb a:hover {
  color: var(--color-text);
}

.page-header .breadcrumb .separator {
  color: var(--color-text-light);
}

.page-header h1 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-semibold);
}

/* --- Loading & Empty States --- */
.loading-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
}

.skeleton {
  background: linear-gradient(90deg,
    var(--color-bg-tertiary) 25%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.skeleton-card {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.skeleton-image {
  aspect-ratio: 1;
}

.skeleton-text {
  height: 14px;
  margin: var(--space-3) var(--space-4);
}

.skeleton-text.short {
  width: 60%;
}

.skeleton-text.price {
  height: 16px;
  width: 40%;
  margin-bottom: var(--space-4);
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.empty-state {
  text-align: center;
  padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  color: var(--color-text-light);
}

.empty-state h3 {
  font-size: var(--fs-lg);
  margin-bottom: var(--space-2);
}

.empty-state p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
}

/* --- Features Bar --- */
.features-bar {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8) 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-6);
  text-align: center;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.feature-icon {
  width: 40px;
  height: 40px;
  color: var(--color-text);
}

.feature-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
}

.feature-text {
  font-size: var(--fs-xs);
  color: var(--color-text-secondary);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-10);
}

.footer-brand .logo {
  margin-bottom: var(--space-4);
  display: inline-block;
}

.footer-brand p {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  max-width: 300px;
}

.footer-column h4 {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-column a {
  font-size: var(--fs-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-text);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p {
  font-size: var(--fs-xs);
  color: var(--color-text-light);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .shop-products .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .cart-layout {
    grid-template-columns: 1fr 320px;
  }

  .checkout-layout {
    grid-template-columns: 1fr 340px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 56px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  /* Header */
  .mobile-menu-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-4);
    box-shadow: var(--shadow-md);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    font-size: var(--fs-base);
  }

  /* Hero */
  .hero-inner {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    padding: var(--space-10) 0;
    text-align: center;
  }

  .hero-title {
    font-size: var(--fs-3xl);
  }

  .hero-subtitle {
    max-width: 100%;
  }

  .hero-image {
    min-height: 300px;
  }

  /* Categories */
  .categories-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  /* Products */
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .loading-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Shop */
  .shop-layout {
    grid-template-columns: 1fr;
  }

  .shop-sidebar {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: 200;
    overflow-y: auto;
    padding: var(--space-6);
    padding-top: var(--space-16);
  }

  .shop-sidebar.open {
    display: block;
  }

  .shop-sidebar .close-filters {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--fs-xl);
    cursor: pointer;
    border: none;
    background: none;
  }

  .mobile-filter-toggle {
    display: flex;
  }

  .shop-products .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  /* Product Detail */
  .product-detail-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .product-gallery {
    position: static;
  }

  .product-info-title {
    font-size: var(--fs-2xl);
  }

  /* Cart */
  .cart-layout {
    grid-template-columns: 1fr;
  }

  .cart-summary {
    position: static;
  }

  .cart-item {
    grid-template-columns: 80px 1fr;
    gap: var(--space-4);
  }

  .cart-item-total {
    grid-column: 2;
    text-align: left;
  }

  /* Checkout */
  .checkout-layout {
    grid-template-columns: 1fr;
  }

  .checkout-summary {
    position: static;
    order: -1;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .form-row.triple {
    grid-template-columns: 1fr;
  }

  /* Features */
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }

  /* Section */
  .section {
    padding: var(--space-10) 0;
  }

  .section-header {
    flex-direction: column;
    gap: var(--space-2);
  }

  /* Toast */
  .toast {
    left: var(--space-4);
    right: var(--space-4);
    bottom: var(--space-4);
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .loading-grid {
    grid-template-columns: 1fr;
  }

  .shop-products .product-grid {
    grid-template-columns: 1fr;
  }

  .product-gallery-thumbs {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-2);
  }

  .hero-title {
    font-size: var(--fs-2xl);
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .product-actions {
    flex-direction: column;
  }
}