// ============================================================================
//  Project   : localvm-research
//  File      : web/public/app.js
//  Purpose   : Client-side interactivity (chart hover tooltips)
//  Author    : Simon-Pierre Boucher
//  Contact   : contact@spboucher.ai
//  Created   : 2026-08-12
//  Modified  : 2026-08-12
//  Platform  : Web (deployed from macOS / Apple Silicon)
//  License   : All rights reserved (research code)
// ============================================================================
"use strict";

// mobile hamburger menu
(function () {
  const toggle = document.getElementById("nav-toggle");
  const nav = document.getElementById("site-nav");
  if (!toggle || !nav) return;
  toggle.addEventListener("click", () => {
    const open = nav.classList.toggle("open");
    toggle.classList.toggle("open", open);
    toggle.setAttribute("aria-expanded", String(open));
  });
  nav.addEventListener("click", (e) => {
    if (e.target.tagName === "A") {
      nav.classList.remove("open");
      toggle.classList.remove("open");
    }
  });
})();

// chart hover tooltips
(function () {
  const fig = document.querySelector(".chart-fig");
  if (!fig) return;
  const tip = fig.querySelector(".chart-tip");
  if (!tip) return;
  fig.querySelectorAll(".pt").forEach((pt) => {
    pt.addEventListener("mouseenter", () => {
      tip.textContent = pt.getAttribute("data-tip");
      tip.hidden = false;
    });
    pt.addEventListener("mousemove", (ev) => {
      const r = fig.getBoundingClientRect();
      tip.style.left = Math.min(ev.clientX - r.left + 14, r.width - tip.offsetWidth - 4) + "px";
      tip.style.top = ev.clientY - r.top - 34 + "px";
    });
    pt.addEventListener("mouseleave", () => { tip.hidden = true; });
  });
})();