body { font-family: Arial, sans-serif; margin: 20px; background: #f9f9f9; }
h1 { text-align: center; }

.catalogo { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 20px; }
.card { background: #fff; padding: 15px; border-radius: 10px; box-shadow: 0 2px 5px rgba(0,0,0,0.1); text-align: center; }

.carrito-btn {
  position: fixed; bottom: 20px; right: 20px; 
  background: #ff6600; color: #fff; border: none; 
  border-radius: 50%; width: 60px; height: 60px;
  font-size: 20px; cursor: pointer;
}

.carrito-panel {
  position: fixed; top: 0; right: -300px; width: 300px; height: 100%;
  background: #fff; box-shadow: -2px 0 5px rgba(0,0,0,0.2);
  padding: 20px; transition: right 0.3s;
}

.carrito-panel.open { right: 0; }