/* ============================================
   ECLIPSE ATELIER LLC - Gradient Light Theme
   Premium Fashion E-commerce Stylesheet
   ============================================ */

/* === CSS Variables & Design Tokens === */
:root {
  /* Gradient Backgrounds */
  --gradient-hero: linear-gradient(135deg, #FFE5E5 0%, #E5F0FF 50%, #F0E5FF 100%);
  --gradient-accent: linear-gradient(135deg, #FFF5E5 0%, #E5FFF5 100%);
  --gradient-button: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-card: linear-gradient(135deg, #FFFFFF 0%, #F8F9FF 100%);
  --gradient-footer: linear-gradient(135deg, #F5F7FA 0%, #E8EAF6 100%);
  
  /* Colors */
  --color-primary: #667eea;
  --color-secondary: #764ba2;
  --color-accent: #FF6B9D;
  --color-bg: #FAFBFC;
  --color-white: #FFFFFF;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666666;
  --color-text-light: #999999;
  --color-border: #E5E7EB;
  --color-success: #10B981;
  --color-error: #EF4444;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* === Google Fonts === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* === Reset & Base Styles === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-regular);
  color: var(--color-text-primary);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

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

input, textarea, select {
  font-family: inherit;
  outline: none;
  transition: var(--transition-base);
}

/* === Utility Classes === */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section {
  padding: var(--spacing-2xl) 0;
}

.gradient-text {
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: var(--shadow-md);
}

/* === Navigation === */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  max-width: 1280px;
  margin: 0 auto;
}

.logo {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.nav-link {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-button);
  transition: var(--transition-base);
}

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

.cart-icon {
  position: relative;
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition-fast);
}

.cart-icon:hover {
  transform: scale(1.1);
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--gradient-button);
  color: white;
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.mobile-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: var(--transition-fast);
}

/* === Hero Section === */
.hero {
  background: var(--gradient-hero);
  padding: var(--spacing-2xl) 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  50% { transform: translate(-30px, 30px) rotate(180deg); }
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-text h1 {
  font-size: 3.5rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  letter-spacing: -1px;
}

.hero-text p {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  line-height: 1.8;
}

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

.btn {
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-button);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: white;
  color: var(--color-text-primary);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.hero-image {
  position: relative;
}

.hero-image img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* === Section Headers === */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.5px;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === Category Cards === */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.category-card {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

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

.category-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.category-card h3 {
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.category-card p {
  color: var(--color-text-secondary);
}

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

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid var(--color-border);
}

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

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

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

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

.product-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  background: var(--gradient-button);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
}

.product-info {
  padding: var(--spacing-md);
}

.product-category {
  font-size: 0.875rem;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.product-name {
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-price {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-md);
}

.product-actions {
  display: flex;
  gap: var(--spacing-sm);
}

.btn-add-cart {
  flex: 1;
  background: var(--gradient-button);
  color: white;
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
}

.btn-add-cart:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-quick-view {
  background: white;
  border: 2px solid var(--color-border);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-quick-view:hover {
  border-color: var(--color-primary);
}

/* === Filters & Search === */
.shop-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-xl);
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.filter-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-md);
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--gradient-button);
  color: white;
  border-color: transparent;
}

.search-box {
  display: flex;
  gap: var(--spacing-sm);
}

.search-input {
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
  min-width: 250px;
}

.search-input:focus {
  border-color: var(--color-primary);
}

/* === Cart Page === */
.cart-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--spacing-xl);
}

.cart-items {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.cart-item {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

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

.cart-item-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  aspect-ratio: 1;
}

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

.cart-item-details h3 {
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.cart-item-meta {
  color: var(--color-text-secondary);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-sm);
}

.quantity-controls {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-sm);
}

.qty-btn {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
}

.qty-btn:hover {
  background: var(--gradient-button);
  color: white;
}

.qty-value {
  min-width: 40px;
  text-align: center;
  font-weight: var(--font-weight-semibold);
}

.cart-item-price {
  text-align: right;
}

.item-price {
  font-size: 1.25rem;
  font-weight: var(--font-weight-bold);
  background: var(--gradient-button);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.btn-remove {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
  background: none;
  padding: 0;
}

.btn-remove:hover {
  text-decoration: underline;
}

.cart-summary {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  height: fit-content;
  position: sticky;
  top: 100px;
}

.cart-summary h3 {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-md);
}

.summary-row {
  display: flex;
  justify-content: space-between;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.summary-row:last-of-type {
  border-bottom: 2px solid var(--color-border);
  font-weight: var(--font-weight-semibold);
  font-size: 1.125rem;
  margin-top: var(--spacing-sm);
  padding-top: var(--spacing-md);
}

.btn-checkout {
  width: 100%;
  background: var(--gradient-button);
  color: white;
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
  font-size: 1.125rem;
  margin-top: var(--spacing-md);
}

.btn-checkout:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* === Checkout Page === */
.checkout-container {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: var(--spacing-xl);
}

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

.form-section {
  margin-bottom: var(--spacing-xl);
}

.form-section h3 {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-primary);
}

.form-input {
  width: 100%;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 1rem;
}

.form-input:focus {
  border-color: var(--color-primary);
}

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

.payment-methods {
  display: grid;
  gap: var(--spacing-sm);
}

.payment-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
}

.payment-option:hover,
.payment-option.active {
  border-color: var(--color-primary);
  background: var(--gradient-accent);
}

.payment-option input[type="radio"] {
  accent-color: var(--color-primary);
}

/* === Footer === */
.footer {
  background: var(--gradient-footer);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  font-size: 1.125rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-text-secondary);
  transition: var(--transition-fast);
}

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

.social-links {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
}

.social-link:hover {
  background: var(--gradient-button);
  color: white;
  transform: translateY(-2px);
}

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.newsletter-input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: white;
}

.btn-subscribe {
  background: var(--gradient-button);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-weight: var(--font-weight-semibold);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

/* === Responsive Design === */
@media (max-width: 1024px) {
  .cart-container,
  .checkout-container {
    grid-template-columns: 1fr;
  }
  
  .cart-summary {
    position: static;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: white;
    flex-direction: column;
    padding: var(--spacing-lg);
    transition: var(--transition-base);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .mobile-toggle {
    display: flex;
  }
  
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text h1 {
    font-size: 2.5rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .section-header h2 {
    font-size: 2rem;
  }
  
  .cart-item {
    grid-template-columns: 80px 1fr;
  }
  
  .cart-item-price {
    grid-column: 2;
    text-align: left;
    margin-top: var(--spacing-sm);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-text h1 {
    font-size: 2rem;
  }
  
  .product-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
  }
  
  .shop-controls {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-input {
    min-width: 100%;
  }
}

/* === Animations === */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: slideInUp 0.6s ease;
}

/* === Loading States === */
.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spin 0.8s linear infinite;
}

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

/* === Empty States === */
.empty-state {
  text-align: center;
  padding: var(--spacing-2xl);
}

.empty-state-icon {
  font-size: 4rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.3;
}

.empty-state h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.empty-state p {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}