body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f9f9f9;
  color: #333;
}
header {
  background: #004aad;
  color: white;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 40px;
}
.logo { font-weight: bold; font-size: 1.4em; }
nav a { color: white; text-decoration: none; margin: 0 15px; font-weight: 500; }
nav a.active { text-decoration: underline; }
.hero {
  text-align: center;
  padding: 80px 20px;
  background: linear-gradient(135deg, #004aad, #0078ff);
  color: white;
}
.btn {
  display: inline-block;
  background: #ff9900;
  color: white;
  padding: 10px 20px;
  text-decoration: none;
  border-radius: 5px;
  margin-top: 10px;
}
.categories, .products, .page-header, .contact-form { padding: 40px 20px; text-align: center; }
.category-grid, .product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px; margin-top: 20px;
}
.category-card, .product-card {
  background: white; border-radius: 10px; padding: 15px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.category-card img, .product-card img { width: 100%; border-radius: 10px; }
.product-details {
  display: flex; flex-wrap: wrap; gap: 30px; padding: 40px;
  background: white; margin: 20px; border-radius: 10px;
}
.product-details img { max-width: 400px; border-radius: 10px; }
.product-details .info { flex: 1; min-width: 280px; }
.product-details .price { font-size: 1.5em; color: #004aad; font-weight: bold; }
.cart { padding: 40px; }
.cart-item {
  display: flex; align-items: center; background: white;
  margin-bottom: 15px; padding: 15px; border-radius: 10px;
}
.cart-item img { border-radius: 8px; margin-right: 15px; }
.cart-total { text-align: right; margin-top: 20px; }
.contact-form { display: flex; justify-content: center; flex-wrap: wrap; gap: 40px; }
form {
  flex: 1; min-width: 280px; max-width: 400px;
  display: flex; flex-direction: column;
}
input, textarea {
  margin-bottom: 10px; padding: 10px;
  border: 1px solid #ccc; border-radius: 5px;
}
footer {
  background: #004aad; color: white; text-align: center;
  padding: 15px; margin-top: 30px;
}