/*
 * helpers.js
 * Pure utility functions with no dependencies on other application modules.
 * Safe to call from any JS file.
 *
 * Provides: esc(), toast(), isDesktop()
 */

// ── Helpers ─────────────────────────────────────────────────────────────────
function esc(s) {
  return String(s ?? '').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;').replace(/"/g,'&quot;');
}

function toast(msg, dur = 2800) {
  const el = document.getElementById('toast');
  el.textContent = msg; el.classList.add('on');
  clearTimeout(toast._t);
  toast._t = setTimeout(() => el.classList.remove('on'), dur);
}

function isDesktop() { return window.innerWidth >= 768; }