// Fixed credentials
const FIXED_USERNAME = "people";
const FIXED_PASSWORD = "home";

// Protect app.html
if (window.location.pathname.includes("app.html")) {
  if (!sessionStorage.getItem("isLoggedIn")) {
    window.location.href = "index.html";
  }
}

// Login function
function login() {
  const user = document.getElementById("username").value;
  const pass = document.getElementById("password").value;
  const message = document.getElementById("message");

  if (user === FIXED_USERNAME && pass === FIXED_PASSWORD) {
    sessionStorage.setItem("isLoggedIn", "true");
    window.location.href = "app.html";
  } else {
    message.innerText = "❌ Invalid username or password";
  }
}

// Logout
function logout() {
  sessionStorage.removeItem("isLoggedIn");
  window.location.href = "index.html";
}

// Disable signup (optional safety)
function signup() {
  alert("Signup is disabled. Use the provided demo credentials.");
}