// RED SYSTEMS — shared site behavior

// FAQ accordion
document.addEventListener('DOMContentLoaded', function () {
  document.querySelectorAll('.faq-q').forEach(function (q) {
    q.addEventListener('click', function () {
      var a = q.nextElementSibling;
      var isOpen = q.classList.contains('open');
      q.classList.toggle('open', !isOpen);
      if (a) a.classList.toggle('open', !isOpen);
    });
  });

  // Mobile nav toggle
  var toggle = document.querySelector('.nav-toggle');
  var panel = document.querySelector('.nav-mobile-panel');
  if (toggle && panel) {
    toggle.addEventListener('click', function () {
      panel.style.display = panel.style.display === 'flex' ? 'none' : 'flex';
    });
  }

  // File upload preview (quote/contact form)
  var fileInput = document.getElementById('file-input');
  if (fileInput) {
    fileInput.addEventListener('change', function () {
      var list = document.getElementById('file-list');
      var files = Array.from(this.files || []);
      if (list && files.length) {
        list.innerHTML = files
          .map(function (f) {
            return (
              '<div style="padding:4px 0;border-bottom:1px solid #2a2a2a;color:#888">✓ ' +
              f.name +
              ' <span style="color:#555">(' +
              (f.size / 1024).toFixed(0) +
              ' KB)</span></div>'
            );
          })
          .join('');
      }
      var zone = document.getElementById('upload-zone');
      if (zone) zone.style.borderColor = '#C8201A';
    });
  }
});

// Quote/contact form submit handler.
// NOTE: Replace the placeholder action URL in the <form> tag with your real
// Formspree endpoint (https://formspree.io) to receive submissions by email — for free.