index.html

<script>
const WHATSAPP_NUMBER = "919876543210"; // 🔴 your real number

function buy(product) {
    document.getElementById("product").value = product;
    document.getElementById("popup").style.display = "block";
}

function closePopup() {
    document.getElementById("popup").style.display = "none";
}

function placeOrder() {
    const product = document.getElementById("product").value.trim();
    const name = document.getElementById("name").value.trim();
    const phone = document.getElementById("phone").value.trim();
    const room = document.getElementById("room").value.trim();
    const address = document.getElementById("address").value.trim();

    if (!product || !name || !phone || !room || !address) {
        alert("Please fill all details");
        return;
    }

    const message =
`🛒 New Order

Product: ${product}
Name: ${name}
Phone: ${phone}
Room No: ${room}
Address: ${address}`;

    const encodedMessage = encodeURIComponent(message);
    const url = "https://wa.me/" + WHATSAPP_NUMBER + "?text=" + encodedMessage;

    // 🔥 This avoids 404
    window.location.href = url;
}
</script>