body {
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    background: #f1f1f1;
}
header {
    background: #263238;
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}
nav a {
    color: white;
    text-decoration: none;
    margin: 0 1rem;
}
.hero {
    background: linear-gradient(135deg, #00695c, #004d40);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}
.products {
    padding: 2rem;
    background: white;
}
.grid {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}
.product {
    background: #fafafa;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    width: 200px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.product img {
    height: 80px;
}
button {
    margin-top: 1rem;
    padding: 0.6rem 1.2rem;
    background: #00796b;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}
.checkout {
    padding: 2rem;
    background: #e0f2f1;
    text-align: center;
}
#cart-items {
    list-style: none;
    padding: 0;
}
#whatsapp-link {
    display: inline-block;
    margin-top: 1rem;
    background: #25D366;
    color: white;
    padding: 0.8rem 1.4rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
}
footer {
    text-align: center;
    background: #263238;
    color: white;
    padding: 1rem;
}
.product-page {
    padding: 2rem;
    text-align: center;
    background: white;
}
.product-page img {
    margin-bottom: 1rem;
    height: 120px;
}
.whatsapp-btn {
    display: inline-block;
    margin-top: 1rem;
    padding: 0.8rem 1.2rem;
    background: #25D366;
    color: white;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
}