/* =============================================
   ApexFootwear E-commerce - Design System
   ============================================= */

/* CSS Custom Properties */
:root {
  /* Colors */
  --primary: #1a1f36;
  --primary-light: #2d3748;
  --accent: #ff6b35;
  --accent-hover: #e55a2b;
  --secondary: #6b7280;
  --secondary-light: #9ca3af;
  --background: #f8f9fa;
  --surface: #ffffff;
  --text-primary: #1a1f36;
  --text-secondary: #6b7280;
  --text-light: #ffffff;
  --border: #e5e7eb;
  --success: #10b981;
  --error: #ef4444;
  --warning: #f59e0b;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
  
  /* Container */
  --container-max: 1280px;
  --container-padding: 1.5rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

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

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

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

button {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  outline: none;
}

input, select, textarea {
  font-family: var(--font-body);
  font-size: 1rem;
}

ul, ol {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* =============================================
   Navigation
   ============================================= */
.navbar {
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.navbar-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--container-padding);
  max-width: var(--container-max);
  margin: 0 auto;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
}

.logo span {
  color: var(--accent);
}

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

.nav-links a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: var(--space-sm) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition-normal);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

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

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--background);
  border-radius: var(--radius-full);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.search-box input {
  border: none;
  background: none;
  outline: none;
  width: 180px;
  font-size: 0.9rem;
}

.search-box button {
  background: none;
  color: var(--secondary);
  padding: 0;
  display: flex;
}

.cart-btn {
  position: relative;
  background: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: var(--space-sm);
  transition: color var(--transition-fast);
}

.cart-btn:hover {
  color: var(--accent);
}

.cart-count {
  position: absolute;
  top: -2px;
  right: -2px;
  background: var(--accent);
  color: white;
  font-size: 0.7rem;
  font-weight: 600;
  min-width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-menu-btn {
  display: none;
  background: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  padding: var(--space-sm);
}

/* =============================================
   Hero Section
   ============================================= */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  color: var(--text-light);
  padding: var(--space-3xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,107,53,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,107,53,0.2);
  color: var(--accent);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero h1 span {
  color: var(--accent);
}

.hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  margin-bottom: var(--space-xl);
  max-width: 500px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  max-width: 90%;
  filter: drop-shadow(0 20px 40px rgba(0,0,0,0.3));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
}

.stat-label {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* =============================================
   Buttons
   ============================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: white;
}

.btn-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.3);
}

.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: white;
  color: white;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

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

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

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

.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
}

.btn-sm {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.85rem;
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: var(--radius-md);
}

/* =============================================
   Section Styling
   ============================================= */
.section {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.section-dark {
  background: var(--primary);
  color: white;
}

.section-dark h2,
.section-dark h3 {
  color: white;
}

/* =============================================
   Product Grid
   ============================================= */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.product-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

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

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

.product-card:hover .product-card-image img {
  transform: scale(1.08);
}

.product-badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  background: var(--accent);
  color: white;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.product-badge.sale {
  background: var(--error);
}

.product-badge.new {
  background: var(--success);
}

.product-actions {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  opacity: 0;
  transform: translateX(10px);
  transition: all var(--transition-fast);
}

.product-card:hover .product-actions {
  opacity: 1;
  transform: translateX(0);
}

.product-action-btn {
  width: 36px;
  height: 36px;
  background: var(--surface);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-fast);
}

.product-action-btn:hover {
  background: var(--accent);
  color: white;
}

.product-card-content {
  padding: var(--space-lg);
}

.product-category {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-xs);
}

.product-card-content h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.product-card-content h3 a {
  color: var(--text-primary);
}

.product-card-content h3 a:hover {
  color: var(--accent);
}

.product-price {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.price-current {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
}

.price-old {
  font-size: 0.9rem;
  color: var(--text-secondary);
  text-decoration: line-through;
}

.product-sizes {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.size-btn {
  width: 32px;
  height: 32px;
  background: var(--background);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.size-btn:hover,
.size-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.add-to-cart-btn {
  width: 100%;
  background: var(--primary);
  color: white;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  transition: all var(--transition-fast);
}

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

/* =============================================
   Categories Section
   ============================================= */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.category-card {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
}

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

.category-card:hover img {
  transform: scale(1.1);
}

.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,31,54,0.9) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-lg);
  color: white;
}

.category-overlay h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.category-overlay span {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* =============================================
   Features Banner
   ============================================= */
.features-banner {
  background: var(--surface);
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

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

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

.feature-icon {
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.feature-text h4 {
  font-size: 0.95rem;
  margin-bottom: var(--space-xs);
}

.feature-text p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* =============================================
   Footer
   ============================================= */
.footer {
  background: var(--primary);
  color: white;
  padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-brand .logo {
  color: white;
  margin-bottom: var(--space-md);
}

.footer-brand p {
  opacity: 0.8;
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
}

.social-links {
  display: flex;
  gap: var(--space-md);
}

.social-links a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background: var(--accent);
  transform: translateY(-3px);
}

.footer-column h4 {
  color: white;
  font-size: 1rem;
  margin-bottom: var(--space-lg);
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

.footer-column a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
}

.footer-column a:hover {
  color: var(--accent);
  padding-left: var(--space-sm);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  opacity: 0.7;
  font-size: 0.85rem;
}

.payment-icons {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.payment-icons img {
  height: 30px;
  opacity: 0.8;
}

/* =============================================
   Product Detail Page
   ============================================= */
.product-detail {
  padding: var(--space-2xl) 0;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.product-gallery {
  position: sticky;
  top: 100px;
}

.main-image {
  aspect-ratio: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
  margin-bottom: var(--space-md);
}

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

.product-info h1 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.product-info .product-price {
  margin-bottom: var(--space-lg);
}

.product-info .price-current {
  font-size: 1.75rem;
}

.product-description {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.size-selector {
  margin-bottom: var(--space-xl);
}

.size-selector-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.size-selector-header h4 {
  font-size: 0.95rem;
}

.size-guide {
  font-size: 0.85rem;
  color: var(--accent);
}

.size-options {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.size-option {
  width: 50px;
  height: 50px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.size-option:hover {
  border-color: var(--primary);
}

.size-option.active {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.size-option.out-of-stock {
  opacity: 0.4;
  cursor: not-allowed;
  text-decoration: line-through;
}

.quantity-selector {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.quantity-selector label {
  font-weight: 600;
}

.quantity-controls {
  display: flex;
  align-items: center;
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.quantity-btn {
  width: 44px;
  height: 44px;
  background: var(--background);
  color: var(--text-primary);
  font-size: 1.25rem;
  transition: all var(--transition-fast);
}

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

.quantity-input {
  width: 60px;
  height: 44px;
  border: none;
  text-align: center;
  font-weight: 600;
  font-size: 1rem;
}

.product-actions-main {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

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

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

.meta-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

.meta-label {
  color: var(--text-secondary);
  min-width: 100px;
}

/* =============================================
   Cart Styles
   ============================================= */
.cart-page {
  padding: var(--space-2xl) 0;
}

.cart-grid {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--space-2xl);
  align-items: start;
}

.cart-items {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.cart-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--background);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.cart-item {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr auto;
  gap: var(--space-md);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
  align-items: center;
}

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

.cart-product {
  display: flex;
  gap: var(--space-md);
  align-items: center;
}

.cart-product-image {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--background);
  flex-shrink: 0;
}

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

.cart-product-info h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.cart-product-info span {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.cart-item .quantity-controls {
  border-width: 1px;
}

.cart-item .quantity-btn {
  width: 32px;
  height: 32px;
}

.cart-item .quantity-input {
  width: 40px;
  height: 32px;
}

.cart-item-total {
  font-weight: 600;
  font-size: 1rem;
}

.remove-btn {
  background: none;
  color: var(--text-secondary);
  padding: var(--space-sm);
  transition: color var(--transition-fast);
}

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

.cart-summary {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}

.cart-summary h3 {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.summary-row.total {
  font-size: 1.25rem;
  font-weight: 700;
  padding-top: var(--space-md);
  border-top: 2px solid var(--border);
  margin-top: var(--space-md);
}

.cart-summary .btn {
  width: 100%;
  margin-top: var(--space-lg);
}

.empty-cart {
  text-align: center;
  padding: var(--space-3xl);
}

.empty-cart-icon {
  font-size: 4rem;
  color: var(--secondary-light);
  margin-bottom: var(--space-lg);
}

.empty-cart h3 {
  margin-bottom: var(--space-md);
}

.empty-cart p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

/* =============================================
   Checkout Styles
   ============================================= */
.checkout-page {
  padding: var(--space-2xl) 0;
}

.checkout-grid {
  display: grid;
  grid-template-columns: 1fr 420px;
  gap: var(--space-2xl);
  align-items: start;
}

.checkout-form {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
}

.checkout-form h2 {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

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

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
}

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

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.order-summary {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 100px;
}

.order-summary h3 {
  margin-bottom: var(--space-lg);
}

.order-items {
  margin-bottom: var(--space-lg);
  max-height: 300px;
  overflow-y: auto;
}

.order-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
}

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

.order-item-image {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--background);
  flex-shrink: 0;
}

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

.order-item-details {
  flex: 1;
}

.order-item-details h4 {
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
}

.order-item-details span {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.order-item-price {
  font-weight: 600;
  white-space: nowrap;
}

.payment-methods {
  margin-bottom: var(--space-lg);
}

.payment-method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.payment-method:hover,
.payment-method.active {
  border-color: var(--accent);
  background: rgba(255, 107, 53, 0.05);
}

.payment-method input {
  accent-color: var(--accent);
}

.payment-icons-small {
  display: flex;
  gap: var(--space-sm);
  margin-left: auto;
}

.payment-icons-small img {
  height: 24px;
}

.terms-checkbox {
  display: flex;
  gap: var(--space-sm);
  align-items: flex-start;
  margin-bottom: var(--space-lg);
  font-size: 0.85rem;
}

.terms-checkbox input {
  margin-top: 3px;
  accent-color: var(--accent);
}

.terms-checkbox a {
  color: var(--accent);
}

.paystack-btn {
  width: 100%;
  background: #011b33;
  color: white;
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  transition: all var(--transition-fast);
}

.paystack-btn:hover {
  background: #00c3f7;
}

.paystack-btn img {
  height: 24px;
}

/* =============================================
   Order Success
   ============================================= */
.success-page {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2xl);
}

.success-content {
  text-align: center;
  max-width: 500px;
}

.success-icon {
  width: 100px;
  height: 100px;
  background: var(--success);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-xl);
  font-size: 3rem;
  color: white;
  animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
  0% { transform: scale(0); }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); }
}

.success-content h1 {
  margin-bottom: var(--space-md);
}

.success-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
}

.order-number {
  background: var(--background);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-xl);
}

.order-number span {
  display: block;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.order-number strong {
  font-size: 1.5rem;
  color: var(--primary);
}

/* =============================================
   Breadcrumb
   ============================================= */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-lg) 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

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

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

.breadcrumb span {
  color: var(--text-primary);
  font-weight: 500;
}

/* =============================================
   Loading & Toast
   ============================================= */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(26, 31, 54, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 4px solid rgba(255,255,255,0.2);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.toast {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background: var(--primary);
  color: white;
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 9999;
}

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

.toast.success {
  background: var(--success);
}

.toast.error {
  background: var(--error);
}

/* =============================================
   Responsive Design
   ============================================= */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-content {
    order: 2;
  }
  
  .hero-image {
    order: 1;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero p {
    margin: 0 auto var(--space-xl);
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .product-detail-grid {
    grid-template-columns: 1fr;
  }
  
  .cart-grid,
  .checkout-grid {
    grid-template-columns: 1fr;
  }
  
  .cart-summary,
  .order-summary {
    position: static;
  }
}

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .search-box {
    display: none;
  }
  
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .hero h1 {
    font-size: 2rem;
  }
  
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }
  
  .categories-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .feature-item {
    flex-direction: column;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-brand .logo {
    justify-content: center;
  }
  
  .social-links {
    justify-content: center;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  
  .cart-header {
    display: none;
  }
  
  .cart-item {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }
  
  .cart-product {
    grid-column: 1;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
  
  .hero-buttons {
    flex-direction: column;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
}

/* =============================================
   Mobile Navigation
   ============================================= */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--surface);
  z-index: 2000;
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
}

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

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border);
}

.mobile-nav-close {
  background: none;
  font-size: 1.5rem;
  color: var(--text-primary);
}

.mobile-nav-links {
  padding: var(--space-lg);
}

.mobile-nav-links a {
  display: block;
  padding: var(--space-md) 0;
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
}

.mobile-nav-links a:hover {
  color: var(--accent);
}