:root {
  --primary: #0F3B4C;
  --primary-dark: #092632;
  --accent: #C88A3A;
  --accent-hover: #b0782e;
  --bg-page: #F5F5F2;
  --bg-surface: #FFFFFF;
  --text-main: #1C1C1C;
  --text-muted: #5D6A72;
  --success: #2E7D32;
  --border: #E0E0E0;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Playfair Display', serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s;
}

button {
  cursor: pointer;
  font-family: var(--font-main);
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 4px;
  font-weight: 600;
  text-align: center;
  transition: all 0.2s;
  border: none;
}

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

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

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

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

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

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

.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* Header */
header {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 15px 0;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.5px;
  color: var(--primary);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  gap: 30px;
}

.nav-links a {
  font-weight: 500;
  font-size: 15px;
}

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

.nav-icons {
  display: flex;
  gap: 20px;
  align-items: center;
}

.cart-icon-wrapper {
  position: relative;
}

.cart-count {
  position: absolute;
  top: -8px;
  right: -8px;
  background: var(--accent);
  color: white;
  font-size: 10px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

/* Hero */
.hero {
  height: 80vh;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  color: white;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(15, 59, 76, 0.4);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  padding: 20px;
}

.hero h1 {
  font-size: 3.5rem;
  color: white;
  margin-bottom: 20px;
  text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 30px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* Categories */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  padding: 60px 0;
}

.category-card {
  position: relative;
  height: 400px;
  overflow: hidden;
  border-radius: 4px;
  cursor: pointer;
}

.category-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.category-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
  padding: 30px;
  color: white;
}

.category-overlay h3 {
  color: white;
  font-size: 1.8rem;
  margin-bottom: 10px;
}

/* Product Grid */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.product-card {
  background: var(--bg-surface);
  border-radius: 4px;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid transparent;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  border-color: var(--border);
}

.product-image {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: #f0f0f0;
}

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

.product-details {
  padding: 20px;
}

.product-category {
  font-size: 12px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 5px;
}

.product-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-main);
}

.product-price {
  font-weight: 700;
  color: var(--primary);
}

/* Cart Drawer */
.cart-drawer {
  position: fixed;
  top: 0;
  right: -400px;
  width: 400px;
  height: 100vh;
  background: white;
  box-shadow: -5px 0 30px rgba(0,0,0,0.1);
  z-index: 1000;
  transition: right 0.3s ease;
  display: flex;
  flex-direction: column;
}

.cart-drawer.open {
  right: 0;
}

.cart-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  z-index: 999;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.cart-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

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

.cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.cart-footer {
  padding: 20px;
  border-top: 1px solid var(--border);
  background: #f9f9f9;
}

.cart-item {
  display: flex;
  gap: 15px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 20px;
}

.cart-item img {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 4px;
}

.cart-item-info h4 {
  font-size: 14px;
  margin-bottom: 5px;
}

/* Filters Sidebar */
.shop-layout {
  display: flex;
  gap: 40px;
  padding: 40px 0;
}

.filters {
  width: 250px;
  flex-shrink: 0;
}

.filter-group {
  margin-bottom: 25px;
  padding-bottom: 25px;
  border-bottom: 1px solid var(--border);
}

.filter-group h4 {
  font-size: 14px;
  margin-bottom: 15px;
  text-transform: uppercase;
}

.checkbox-label {
  display: flex;
  align-items: center;
  margin-bottom: 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
}

.checkbox-label input {
  margin-right: 10px;
}

/* PDP */
.product-detail-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  padding: 60px 0;
}

.pdp-gallery {
  display: grid;
  gap: 20px;
}

.pdp-main-image img {
  width: 100%;
  border-radius: 4px;
}

.pdp-info h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.pdp-price {
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 20px;
}

.option-group {
  margin-bottom: 25px;
}

.option-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 10px;
  display: block;
}

.size-options {
  display: flex;
  gap: 10px;
}

.size-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s;
}

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

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 14px;
}

.form-input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--font-main);
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Checkout */
.checkout-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  padding: 40px 0;
}

.checkout-steps {
  background: white;
  padding: 30px;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.order-summary {
  background: #f9f9f9;
  padding: 30px;
  border-radius: 8px;
  height: fit-content;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }

  .shop-layout {
    flex-direction: column;
  }

  .filters {
    width: 100%;
    display: none; /* Hide for simplicity in mobile demo */
  }

  .product-detail-layout {
    grid-template-columns: 1fr;
  }

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

  .cart-drawer {
    width: 300px;
    right: -300px;
  }
}