body { font-family: Arial; background: #f8f9fa; margin: 0; padding: 20px; }
.container { max-width: 600px; margin: auto; background: white; padding: 20px; border-radius: 12px; box-shadow: 0 2px 10px rgba(0,0,0,0.1); }
h1 { text-align: center; color: #25D366; }
.categories { display: flex; gap: 10px; margin: 20px 0; flex-wrap: wrap; }
.cat-btn { padding: 10px 20px; border: none; background: #eee; border-radius: 20px; cursor: pointer; }
.cat-btn.active { background: #25D366; color: white; }
.product-card { border: 1px solid #ddd; margin: 15px 0; padding: 15px; border-radius: 8px; }
.add-btn { background: #25D366; color: white; border: none; padding: 8px 16px; border-radius: 5px; cursor: pointer; margin: 3px; }
#cart-icon { position: fixed; top: 20px; right: 20px; background: #25D366; color: white; padding: 10px; border-radius: 50px; cursor: pointer; font-size: 18px; }