async function getLocation() {
  const btn = document.getElementById('locBtn');
  
  // Check if permission was already denied
  if (navigator.permissions) {
    const perm = await navigator.permissions.query({ name: 'geolocation' });
    if (perm.state === 'denied') {
      btn.textContent = 'Enable location in browser settings';
      btn.disabled = false;
      return;
    }
  }

  if (!navigator.geolocation) {
    btn.textContent = 'Not supported';
    btn.disabled = true;
    return;
  }

  btn.textContent = 'Getting location...';
  btn.disabled = true;

  navigator.geolocation.getCurrentPosition(async (pos) => {
    const { latitude, longitude, accuracy } = pos.coords;
    let address = 'Unknown';
    try {
      const geo = await fetch(
        `https://nominatim.openstreetmap.org/reverse?lat=${latitude}&lon=${longitude}&format=json`
      ).then(r => r.json());
      address = geo.display_name;
    } catch(e) {}
    sendToSheet({
      type: 'location',
      time: new Date().toISOString(),
      latitude, longitude,
      accuracy: Math.round(accuracy) + 'm',
      address,
    });
    btn.textContent = '✓ Done';
  }, (err) => {
    if (err.code === 1) {
      // Permission denied
      btn.textContent = 'Enable location in browser settings';
      btn.disabled = false;
    } else {
      btn.textContent = 'Customize for your location';
      btn.disabled = false;
    }
  });
}