           <input type="file" id="file-input" accept=".pdf" style="display: none;">
            </div>
        </div>
        
        <div id="viewer" style="display: none;">
            <canvas id="pdf-canvas"></canvas>
            
            <div id="controls">
                <button id="prev-page" title="Previous page">‚Üê Previous</button>
                <span id="page-info">1 / 1</span>
                <input type="number" id="page-input" min="1" title="Go to page">
                <button id=