* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f6f8;
  color: #222;
}

header {
  background: #111827;
  color: white;
  text-align: center;
  padding: 30px 15px;
}

header h1 {
  margin: 0 0 10px;
  font-size: 32px;
}

header p {
  margin: 0;
  opacity: 0.85;
}

main {
  max-width: 1000px;
  margin: auto;
  padding: 25px 15px;
}

.products {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.product {
  background: white;
  border-radius: 18px;
  padding: 20px;
  text-align: center;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.product-image {
  height: 150px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f3f5;
  border-radius: 14px;
  font-size: 70px;
}

.product h2 {
  margin-bottom: 8px;
}

.product p {
  color: #666;
}

.product strong {
  display: block;
  font-size: 22px;
  margin: 15px;
}

button {
  border: 0;
  border-radius: 12px;
  padding: 13px 20px;
  background: #111827;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.cart {
  margin-top: 30px;
  background: white;
  padding: 25px;
  border-radius: 18px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.cart h2 {
  margin-top: 0;
}

#cartItems div {
  padding: 10px;
  border-bottom: 1px solid #eee;
}

.order-button {
  width: 100%;
  margin-top: 15px;
  background: #16a34a;
}

footer {
  text-align: center;
  padding: 30px;
  color: #777;
}

@media (max-width: 500px) {
  header h1 {
    font-size: 27px;
  }

  .products {
    grid-template-columns: 1fr;
  }
}