```javascript
// Initialize map centered on UWI St. Augustine
var map = L.map('map').setView([10.6411, -61.3995], 16);

L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  maxZoom: 21,
  attribution: '© OpenStreetMap contributors'
}).addTo(map);

// Variables to hold layers
var buildingsLayer, roadsLayer, walkwaysLayer, poisLayer;
var promises = [];

// Also load blocks from backend once
let blockMap = new Map(); // block_id -> block_name
promises.push(
  fetch('/blocks').then(r => r.json()).then(rows => {
    rows.forEach(b => blockMap.set(b.block_id, b.name));
  })
);

// Load Buildings
promises.push(
  fetch('data/st_augustine_buildings.geojson')
    .then(res => res.json())
    .then(data => {
      buildingsLayer = L.geoJSON(data, {
        style: { color: 'black', fillColor: 'lightgrey', weight: 1 },
        onEachFeature: function(feature, layer) {
          if (feature.properties && feature.properties.name) {
            layer.bindPopup("Building: " + feature.properties.name);
          }
        }
      }).addTo(map);
    })
);

// Load Roads
promises.push(
  fetch('data/drive_edges.geojson')
    .then(res => res.json())
    .then(data => {
      roadsLayer = L.geoJSON(data, {
        style: { color: 'blue', weight: 1 }
      }).addTo(map);
    })
);

// Load Walkways
promises.push(
  fetch('data/walk_edges.geojson')
    .then(res => res.json())
    .then(data => {
      walkwaysLayer = L.geoJSON(data, {
        style: { color: 'green', weight: 3, dashArray: '4' }
      }).addTo(map);
    })
);

// Load POIs
promises.push(
  fetch('data/pois.geojson')
    .then(res => res.json())
    .then(data => {
      poisLayer = L.geoJSON(data, {
        pointToLayer: (feature, latlng) => {
          var marker = L.circleMarker(latlng, {
            radius: 5,
            fillColor: 'red',
            color: 'lightgrey',
            weight: 0.5,
            fillOpacity: 0.5
          });
          if (feature.properties && feature.properties.name) {
            marker.bindPopup(feature.properties.name);
          }
          return marker;
        }
      }).addTo(map);
    })
);

// After all layers are loaded
Promise.all(promises).then(() => {
  var overlays = {
    "Buildings": buildingsLayer,
    "Roads": roadsLayer,
    "Walkways": walkwaysLayer,
    "POIs": poisLayer
  };
  L.control.layers(null, overlays).addTo(map);

  // Search functionality
  let highlightedLayers = { from: null, to: null };
  function clearHighlight(type) {
    if (highlightedLayers[type]) {
      buildingsLayer.resetStyle(highlightedLayers[type]);
      highlightedLayers[type] = null;
    }
  }

  function normalize(s) { return (s || '').toString().toLowerCase().trim(); }

  function findBuildingLayerByName(blockName) {
    if (!blockName) return null;
    let target = null;
    const targetNorm = normalize(blockName);
    buildingsLayer.eachLayer(function(layer) {
      const n = normalize(layer?.feature?.properties?.name);
      if (!n) return;
      if (n === targetNorm || n.includes(targetNorm) || targetNorm.includes(n)) {
        target = layer;
      }
    });
    return target;
  }

  function zoomToSelection(fromName, toName) {
    const fromLayer = findBuildingLayerByName(fromName);
    const toLayer = findBuildingLayerByName(toName);
    
    if (fromLayer && toLayer) {
      clearHighlight('from');
      clearHighlight('to');
      
      // Highlight from location
      highlightedLayers.from = fromLayer;
      fromLayer.setStyle({ color: '#ff7800', weight: 3, fillColor: '#ffd27f', fillOpacity: 0.6 });
      
      // Highlight to location
      highlightedLayers.to = toLayer;
      toLayer.setStyle({ color: '#4CAF50', weight: 3, fillColor: '#8BC34A', fillOpacity: 0.6 });
      
      // Fit both locations in view
      const bounds = L.latLngBounds([fromLayer.getBounds(), toLayer.getBounds()]);
      map.fitBounds(bounds, { padding: [50, 50] });
      
      // TODO: Add path finding logic here using walkwaysLayer
    } else {
      alert('Could not find one or both locations');
    }
  }

  // Handle search and suggestions
  let activeSearch = null;
  const sug = document.getElementById('suggestions');
  
  function renderSuggestions(items, inputId) {
    sug.innerHTML = '';
    if (!items.length) { sug.style.display = 'none'; return; }
    
    items.forEach(item => {
      const div = document.createElement('div');
      div.className = 'item';
      const blockName = (item.type === 'block') ? item.name : (blockMap.get(item.block_id) || '');
      const label = (item.type === 'block') ? item.name : `${item.room_name} — ${blockName}`;
      div.textContent = label;
      div.dataset.blockName = blockName;
      div.onclick = () => {
        sug.style.display = 'none';
        document.getElementById(inputId).value = label;
        const layer = findBuildingLayerByName(blockName);
        if (layer) {
          map.fitBounds(layer.getBounds(), { padding: [20, 20] });
        }
      };
      sug.appendChild(div);
    });
    sug.style.display = 'block';
  }

  // Event listeners for search inputs
  document.getElementById('fromSearch').addEventListener('input', function() {
    const q = this.value.trim();
    if (q.length < 1) { sug.style.display = 'none'; return; }
    activeSearch = 'fromSearch';
    fetch(`/search?q=${encodeURIComponent(q)}`)
      .then(res => res.json())
      .then(results => renderSuggestions(results, 'fromSearch'))
      .catch(() => { sug.style.display = 'none'; });
  });

  document.getElementById('toSearch').addEventListener('input', function() {
    const q = this.value.trim();
    if (q.length < 1) { sug.style.display = 'none'; return; }
    activeSearch = 'toSearch';
    fetch(`/search?q=${encodeURIComponent(q)}`)
      .then(res => res.json())
      .then(results => renderSuggestions(results, 'toSearch'))
      .catch(() => { sug.style.display = 'none'; });
  });

  // Find path button
  document.getElementById('findPathBtn').addEventListener('click', function() {
    const from = document.getElementById('fromSearch').value;
    const to = document.getElementById('toSearch').value;
    
    if (!from || !to) {
      alert('Please select both starting point and destination');
      return;
    }
    
    // Extract building names (removing room numbers if present)
    const fromBuilding = from.split('—')[0].trim();
    const toBuilding = to.split('—')[0].trim();
    
    zoomToSelection(fromBuilding, toBuilding);
  });

  // Hide suggestions when clicking outside
  document.addEventListener('click', (e) => {
    if (!document.getElementById('search-container').contains(e.target)) {
      sug.style.display = 'none';
    }
  });

  // Handle suggestion clicks
  sug.addEventListener('click', function(e) {
    if (e.target.classList.contains('item') && e.target.dataset.blockName && activeSearch) {
      document.getElementById(activeSearch).value = e.target.textContent;
      sug.style.display = 'none';
    }
  });
});
```

These changes will:
1. Replace the single search box with two search bars for "from" and "to" locations
2. Add labels and a "Find Path" button
3. Style the new elements to match the existing design
4. Update the JavaScript to handle both search inputs and path finding
5. Keep all the existing map functionality while adding the new features