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<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />
    <title>SmartNotes PDF OCR</title>
    <link rel="stylesheet" href="/static/styles.css" />
  </head>
  <body>
    <main class="app-shell">
      <section class="workspace">
        <div class="panel upload-panel">
          <div class="brand-row">
            <span class="brand-mark">SN</span>
            <div>
              <h1>SmartNotes AI</h1>
              <p>Advanced RAG-Powered PDF Intelligence Platform</p>
              <span class="brand-subline">Hybrid Retrieval / Reranking / Citations / Evaluation</span>
            </div>
          </div>

          <form id="uploadForm" class="drop-zone">
            <input id="pdfInput" type="file" name="file" accept="application/pdf" />
            <div class="drop-content">
              <strong id="fileName">Choose or drop a PDF</strong>
              <span>Direct text first, OCR only when needed</span>
            </div>
            <button type="submit">Upload PDF</button>
          </form>

          <div id="fileCard" class="file-card is-hidden">
            <div class="file-icon">PDF</div>
            <div>
              <strong id="uploadedFileName">notes.pdf</strong>
              <span id="uploadedFileMeta">0 Pages / 0 MB</span>
              <em>Uploaded Successfully</em>
            </div>
          </div>

          <div id="pdfPreviewCard" class="pdf-preview-card is-hidden">
            <div class="section-head">
              <h2>PDF Preview</h2>
              <span>First page</span>
            </div>
            <iframe id="pdfPreview" title="PDF first page preview"></iframe>
          </div>

          <div class="status-grid">
            <div>
              <span>Route</span>
              <strong id="routeValue">Waiting</strong>
            </div>
            <div>
              <span>Pages</span>
              <strong id="pageCount">0</strong>
            </div>
            <div>
              <span>Direct Text</span>
              <strong id="directText">-</strong>
            </div>
          </div>
          <div id="uploadMessage" class="upload-message">Upload a PDF to begin.</div>
        </div>

        <div class="panel query-panel">
          <div class="result-toolbar">
            <h2>Ask PDF</h2>
            <span id="activeDocument">No document indexed</span>
          </div>
          <form id="queryForm" class="query-form">
            <input id="queryInput" type="text" placeholder="Ask your question here" />
            <button type="submit">Ask</button>
          </form>
          <div class="answer-card">
            <span>Answer</span>
            <div id="confidenceBadge" class="confidence-badge neutral">Confidence pending</div>
            <div id="answerBox" class="answer-box">Upload a PDF first. Answer will appear here.</div>
            <div id="citations" class="citation-list"></div>
          </div>
        </div>

        <div class="panel dashboard-panel">
          <div class="result-toolbar">
            <h2>Retrieval Analytics</h2>
            <span id="dashboardStatus">Waiting for PDF</span>
          </div>
          <details class="advanced-dashboard" open>
            <summary>RAG Analytics Dashboard</summary>
            <div class="dashboard-grid">
              <section class="metric-section">
                <div class="section-head">
                  <h2>Indexing Timeline</h2>
                  <span id="docStatus">Waiting</span>
                </div>
                <div id="indexSteps" class="timeline-list"></div>
              </section>

              <section class="metric-section">
                <div class="section-head">
                  <h2>Chunking Comparison</h2>
                  <span id="bestChunking" class="winner-badge">Evaluation Pending</span>
                </div>
                <div id="chunkComparison" class="comparison-table"></div>
              </section>

              <section class="metric-section">
                <h2>Retrieval Metrics</h2>
                <div id="hybridStats" class="stat-grid">
                  <div><span>Vector</span><strong>-</strong></div>
                  <div><span>BM25</span><strong>-</strong></div>
                  <div><span>Merged</span><strong>-</strong></div>
                  <div><span>Reranked</span><strong>-</strong></div>
                </div>
              </section>

              <section class="metric-section">
                <h2>Evaluation Dashboard</h2>
                <div id="evaluationCards" class="stat-grid">
                  <div><span>Precision</span><strong>-</strong></div>
                  <div><span>Recall</span><strong>-</strong></div>
                  <div><span>Faithfulness</span><strong>-</strong></div>
                  <div><span>Relevancy</span><strong>-</strong></div>
                </div>
              </section>

              <section class="metric-section">
                <h2>CRAG Retrieval Quality</h2>
                <div id="cragStatus" class="crag-box neutral">
                  <strong>Waiting</strong>
                  <span>Run a query to grade retrieval quality.</span>
                </div>
              </section>

              <section class="metric-section">
                <h2>Retrieval Pipeline</h2>
                <div id="pipelineViz" class="pipeline-viz"></div>
              </section>

              <section class="metric-section">
                <h2>Hallucination Status</h2>
                <div id="hallucinationCard" class="hallucination-card neutral">
                  <span>Answer Source Coverage</span>
                  <strong>-</strong>
                  <span>Faithfulness</span>
                  <strong>-</strong>
                  <em>Waiting for answer</em>
                </div>
              </section>
            </div>

            <section class="metric-section retrieval-section">
              <div class="section-head">
                <h2>Top Retrieved Chunks</h2>
                <span>🧠 Parent-Child Retrieval</span>
              </div>
              <div id="retrievedChunks" class="retrieved-chunks"></div>
            </section>

            <section class="metric-section recommendation-section">
              <h2>Best Chunking Recommendation</h2>
              <div id="bestRecommendation" class="recommendation-box">Index a PDF to compare chunking strategies.</div>
            </section>
          </details>
        </div>

        <div class="panel history-panel">
          <div class="result-toolbar">
            <h2>Recent Questions</h2>
            <span id="historyCount">0 saved</span>
          </div>
          <div id="queryHistory" class="query-history">
            <span>No questions yet.</span>
          </div>
        </div>

        <div class="panel details-panel">
          <div class="result-toolbar">
            <h2>Extracted Text</h2>
            <button id="copyButton" type="button">Copy Text</button>
          </div>
          <details>
            <summary>Show extracted text and page OCR details</summary>
            <div id="pageDetails" class="page-details"></div>
            <pre id="resultText">Upload a PDF to see extracted text here.</pre>
          </details>
          <form id="feedbackForm" class="feedback-form">
            <select id="feedbackRating">
              <option value="5">5</option>
              <option value="4">4</option>
              <option value="3">3</option>
              <option value="2">2</option>
              <option value="1">1</option>
            </select>
            <input id="feedbackComment" type="text" placeholder="Feedback" />
            <button type="submit">Save Feedback</button>
          </form>
        </div>
      </section>
    </main>

    <script src="/static/app.js?v=20260625-safe-json-errors"></script>
  </body>
</html>