* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', sans-serif;
  margin: 0;
  background: #f4f4f4;
  color: #333;
}

header {
  background: #222;
  color: white;
  padding: 1.5rem;
  text-align: center;
}

main {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  padding: 2rem;
  gap: 2rem;
}

.products, .cart {
  flex: 1 1 300px;
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.product {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 1rem;
}

.product h3 {
  margin: 0;
}

button {
  padding: 0.5rem 1rem;
  background: #007acc;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 4px;
}

button:hover {
  background: #005fa3;
}

#cartItems {
  list-style: none;
  padding-left: 0;
}

#cartItems li {
  margin-bottom: 0.5rem;
}