body {
  font-family: Arial, sans-serif;
  margin: 0;
  padding: 0;
}

header {
  background: #222;
  color: #fff;
  padding: 15px;
  text-align: center;
}

.grid, .product-grid {
  display: grid;
  gap: 15px;
  padding: 20px;
}

.grid {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.product-grid {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 15px;
  text-align: center;
  background: #fff;
  transition: 0.2s;
}

.card:hover {
  transform: scale(1.03);
  cursor: pointer;
}

.price-old {
  text-decoration: line-through;
  color: #888;
  margin-right: 10px;
}

.price-new {
  color: red;
  font-weight: bold;
}

/* MODAL */
.modal {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden { display: none; }

.modal-content {
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  width: 400px;
  position: relative;
}

.close {
  position: absolute;
  top: 10px; right: 15px;
  font-size: 22px;
  cursor: pointer;
}