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  <title>Shingle Geek — Open Roofing Cost Data</title>
  <meta name="description" content="Open-source roofing cost transparency data for 400+ US cities. Independent pricing analysis by Shingle Geek.">
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    /* ── Stats ─────────────────────────────────────────── */
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      top: 50%;
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    }
  </style>
</head>
<body>

  <div class="hero">
    <div class="hero-content">
      <div class="hero-badge">🏠 Open Data Initiative</div>
      <h1>See What Your Roof <span>Actually Costs</span></h1>
      <p>Independent, city-level roofing cost data — so homeowners can compare fair contractor pricing against inflated sales quotes.</p>
      <div class="hero-links">
        <a href="https://www.shinglegeek.com" class="btn-primary" target="_blank">🌐 Visit Shingle Geek</a>
        <a href="https://huggingface.co/datasets/ShingleGeek/roofing-cost-index" class="btn-outline" target="_blank">📊 Download Dataset</a>
      </div>
    </div>
  </div>

  <div class="stats">
    <div class="stat"><div class="stat-value" id="city-count">505</div><div class="stat-label">US Cities Tracked</div></div>
    <div class="stat"><div class="stat-value" id="state-count">50</div><div class="stat-label">States Covered</div></div>
    <div class="stat"><div class="stat-value">$0</div><div class="stat-label">Hidden Fees</div></div>
    <div class="stat"><div class="stat-value">Weekly</div><div class="stat-label">Data Refresh</div></div>
  </div>

  <div class="section">
    <h2>Dataset <span>Explorer</span></h2>
    <p class="section-sub">Fair contractor estimate vs. sales company price. Use the interactive search below to look up any tracked city.</p>
    
    <div class="search-container">
      <span class="search-icon">🔍</span>
      <input type="text" id="city-search" class="search-input" placeholder="Loading interactive search..." disabled>
    </div>

    <table class="preview-table">
      <thead>
        <tr><th>City</th><th>State</th><th>Fair Estimate</th><th>Sales Price</th><th>Source</th></tr>
      </thead>
      <tbody>
        <tr><td>Houston</td><td>TX</td><td class="cost-fair">$11,900</td><td class="cost-markup">$15,470</td><td><a href="https://www.shinglegeek.com/cost/houston-tx" target="_blank">View →</a></td></tr>
        <tr><td>Nashville</td><td>TN</td><td class="cost-fair">$11,900</td><td class="cost-markup">$15,470</td><td><a href="https://www.shinglegeek.com/cost/nashville-tn" target="_blank">View →</a></td></tr>
        <tr><td>Beverly Hills</td><td>CA</td><td class="cost-fair">$12,100</td><td class="cost-markup">$15,730</td><td><a href="https://www.shinglegeek.com/cost/beverly-hills-ca" target="_blank">View →</a></td></tr>
        <tr><td>Kirkland</td><td>WA</td><td class="cost-fair">$10,750</td><td class="cost-markup">$13,975</td><td><a href="https://www.shinglegeek.com/cost/kirkland-wa" target="_blank">View →</a></td></tr>
        <tr><td>Naples</td><td>FL</td><td class="cost-fair">$11,900</td><td class="cost-markup">$15,470</td><td><a href="https://www.shinglegeek.com/cost/naples-fl" target="_blank">View →</a></td></tr>
      </tbody>
    </table>
  </div>

  <div class="footer">
    <p>© 2026 <a href="https://www.shinglegeek.com" target="_blank">Shingle Geek</a> · CC BY 4.0 · JSONL + CSV formats available</p>
  </div>

  <script>
    let allCities = [];
    const defaultCities = [
      { city: 'Houston', state: 'TX', fairEstimate: 11900, salesEstimate: 15470, slug: 'houston-tx' },
      { city: 'Nashville', state: 'TN', fairEstimate: 11900, salesEstimate: 15470, slug: 'nashville-tn' },
      { city: 'Beverly Hills', state: 'CA', fairEstimate: 12100, salesEstimate: 15730, slug: 'beverly-hills-ca' },
      { city: 'Kirkland', state: 'WA', fairEstimate: 10750, salesEstimate: 13975, slug: 'kirkland-wa' },
      { city: 'Naples', state: 'FL', fairEstimate: 11900, salesEstimate: 15470, slug: 'naples-fl' }
    ];

    async function initDynamicData() {
      const searchInput = document.getElementById('city-search');
      const cityCountEl = document.getElementById('city-count');
      const stateCountEl = document.getElementById('state-count');

      try {
        const csvUrl = 'https://huggingface.co/datasets/ShingleGeek/roofing-cost-index/resolve/main/roofing_cost_index_2026.csv';
        const response = await fetch(csvUrl);
        if (!response.ok) throw new Error('Failed to fetch dataset');
        const csvText = await response.text();

        const lines = csvText.split('\n');
        const parsedData = [];
        const uniqueStates = new Set();

        for (let i = 1; i < lines.length; i++) {
          const line = lines[i].trim();
          if (!line) continue;
          const parts = line.split(',');
          if (parts.length >= 5) {
            const city = parts[0].replace(/"/g, '').trim();
            const state = parts[1].replace(/"/g, '').trim();
            const fairEstimate = parseInt(parts[2].trim(), 10);
            const salesEstimate = parseInt(parts[3].trim(), 10);
            const sourceUrl = parts.slice(4).join(',').replace(/"/g, '').trim();
            const slug = sourceUrl.split('/').pop();

            if (city && state && !isNaN(fairEstimate)) {
              parsedData.push({ city, state, fairEstimate, salesEstimate, slug });
              uniqueStates.add(state);
            }
          }
        }

        if (parsedData.length > 0) {
          allCities = parsedData;
          cityCountEl.textContent = allCities.length;
          stateCountEl.textContent = uniqueStates.size;
          
          searchInput.placeholder = `🔍 Search ${allCities.length} cities...`;
          searchInput.disabled = false;
        }
      } catch (error) {
        console.warn('Falling back to static defaults:', error);
        searchInput.placeholder = '🔍 Search 500+ cities...';
        searchInput.disabled = false; // keep search enabled but we will search locally compiled defaults or show warning
      }
    }

    function handleSearch(e) {
      const query = e.target.value.toLowerCase().trim();
      const dataset = allCities.length > 0 ? allCities : defaultCities;
      
      if (!query) {
        renderRows(defaultCities);
        return;
      }

      const filtered = dataset.filter(c => 
        c.city.toLowerCase().includes(query) || 
        c.state.toLowerCase() === query
      );

      renderRows(filtered.slice(0, 10), query, filtered.length);
    }

    function renderRows(items, query = '', totalCount = 0) {
      const tableBody = document.querySelector('.preview-table tbody');
      if (items.length === 0) {
        tableBody.innerHTML = `<tr><td colspan="5" style="text-align: center; color: var(--text-2); padding: 32px 16px;">No cities found matching "${query}"</td></tr>`;
        return;
      }

      let html = '';
      items.forEach(item => {
        html += `<tr>
          <td>${item.city}</td>
          <td>${item.state}</td>
          <td class="cost-fair">$${item.fairEstimate.toLocaleString()}</td>
          <td class="cost-markup">$${item.salesEstimate.toLocaleString()}</td>
          <td><a href="https://www.shinglegeek.com/cost/${item.slug}" target="_blank">View →</a></td>
        </tr>`;
      });

      if (totalCount > 10) {
        html += `<tr><td colspan="5" style="text-align: center; color: var(--text-2); font-size: 12px; padding: 12px; border-top: 1px solid var(--line);">Showing top 10 of ${totalCount} matching cities.</td></tr>`;
      }
      
      tableBody.innerHTML = html;
    }

    document.getElementById('city-search').addEventListener('input', handleSearch);
    window.addEventListener('DOMContentLoaded', initDynamicData);
  </script>
</body>
</html>