/* ==========================================
   StudioA - Premium Indian Ethnic Wear
   E-Commerce Styles
   ========================================== */

/* CSS Custom Properties (Variables) */
:root {
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #e94560;
  --color-accent-light: #ff6b6b;
  --color-background: #f8f9fa;
  --color-surface: #ffffff;
  --color-text: #212121;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;

  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #ff6b6b 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.15);

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Scale */
.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-3xl { font-size: 1.875rem; line-height: 2.25rem; }

/* Content Container */
.content-container {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  background: var(--gradient-dark);
  color: white;
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.header .content-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header h1,
.header .logo {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, #fff 0%, #f0d9b5 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header .back-link {
  order: -1;
}

.header a {
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.header a:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateX(-4px);
}

/* Hero Section */
.hero {
  background: var(--gradient-primary);
  padding: 4rem 0;
  text-align: center;
  color: white;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.hero h2 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2.75rem;
  font-weight: 600;
  margin-bottom: 1rem;
  position: relative;
  letter-spacing: 0.02em;
}

.hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* Main Content */
main {
  padding: 3rem 0;
  min-height: calc(100vh - 200px);
}

/* Section Title */
.section-title {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: 2rem;
  position: relative;
  display: inline-block;
  letter-spacing: 0.02em;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradient-accent);
  border-radius: 2px;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

@media (max-width: 1200px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .product-grid { grid-template-columns: 1fr; }
}

/* Product Card */
.product-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-slow);
  position: relative;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

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

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card-image {
  position: relative;
  padding-top: 120%;
  background: linear-gradient(135deg, #f5f5f5 0%, #ececec 100%);
  overflow: hidden;
}

.product-card-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.product-card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--gradient-accent);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card-info {
  padding: 1.25rem;
}

.product-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  transition: color var(--transition-fast);
}

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

.product-card-price {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-accent);
}

.product-card-variants {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.variant-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  transition: all var(--transition-fast);
}

.variant-dot:hover {
  transform: scale(1.2);
  border-color: var(--color-accent);
}

/* Product Detail Page */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

@media (max-width: 900px) {
  .product-detail {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* Image Gallery */
.image-gallery {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.main-image {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(135deg, #f5f5f5 0%, #ececec 100%);
  box-shadow: var(--shadow-lg);
}

.main-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--transition-slow);
}

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

.thumbnail-gallery {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
}

.thumbnail {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  opacity: 0.6;
  transition: all var(--transition-base);
  border: 3px solid transparent;
  flex-shrink: 0;
}

.thumbnail:hover,
.thumbnail.active {
  opacity: 1;
  border-color: var(--color-accent);
  transform: scale(1.05);
}

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

/* Product Info */
.product-info {
  padding: 1rem 0;
}

.product-info h1 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 1rem;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.product-info .price {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.price-original {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.product-info .description {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.75;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

/* Variant Selector */
.variant-selector {
  margin-bottom: 2rem;
}

.variant-selector label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.variant-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.variant-option {
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  transition: all var(--transition-base);
}

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

.variant-option.selected {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: white;
}

/* Add to Cart Button */
.add-to-cart {
  width: 100%;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  color: white;
  background: var(--gradient-accent);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.add-to-cart::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.add-to-cart:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), 0 0 20px rgba(233, 69, 96, 0.4);
}

.add-to-cart:hover::before {
  left: 100%;
}

.add-to-cart:active {
  transform: translateY(0);
}

/* Product Features */
.product-features {
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-background);
  border-radius: var(--radius-md);
  font-size: 1.25rem;
}

/* Footer */
.footer {
  background: var(--gradient-dark);
  color: white;
  padding: 3rem 0 0;
  margin-top: auto;
}

.footer .content-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.footer-text {
  opacity: 0.7;
  font-size: 0.875rem;
  max-width: 300px;
}

.footer-links {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.6;
}

/* Loading State */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 400px;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

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

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

.product-card {
  animation: fadeInUp 0.6s ease forwards;
}

.product-card:nth-child(1) { animation-delay: 0.1s; }
.product-card:nth-child(2) { animation-delay: 0.2s; }
.product-card:nth-child(3) { animation-delay: 0.3s; }
.product-card:nth-child(4) { animation-delay: 0.4s; }

/* Responsive Adjustments */
@media (max-width: 600px) {
  .header h1 {
    font-size: 1.25rem;
  }

  .hero {
    padding: 2.5rem 0;
  }

  .hero h2 {
    font-size: 1.75rem;
  }

  .product-info h1 {
    font-size: 1.75rem;
  }

  .product-detail {
    gap: 1.5rem;
  }

  .footer .content-container {
    flex-direction: column;
    text-align: center;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.hidden { display: none; }