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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Enhanced DOCX to PDF Converter</title>
    <style>
        body {
            font-family: Arial, sans-serif;
            max-width: 800px;
            margin: 0 auto;
            padding: 20px;
            background-color: #f5f5f5;
        }
        .container {
            background-color: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        h1 {
            color: #333;
            text-align: center;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            margin-bottom: 5px;
            font-weight: bold;
        }
        input[type="file"] {
            width: 100%;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
        }
        button {
            background-color: #007bff;
            color: white;
            padding: 12px 24px;
            border: none;
            border-radius: 5px;
            cursor: pointer;
            font-size: 16px;
            width: 100%;
        }
        button:hover {
            background-color: #0056b3;
        }
        button:disabled {
            background-color: #ccc;
            cursor: not-allowed;
        }
        .result {
            margin-top: 20px;
            padding: 15px;
            border-radius: 5px;
            display: none;
        }
        .success {
            background-color: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }
        .error {
            background-color: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }
        .loading {
            text-align: center;
            display: none;
        }
        .spinner {
            border: 4px solid #f3f3f3;
            border-top: 4px solid #3498db;
            border-radius: 50%;
            width: 30px;
            height: 30px;
            animation: spin 1s linear infinite;
            margin: 0 auto 10px;
        }
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
    </style>
</head>
<body>
    <div class="container">
        <h1>Enhanced DOCX to PDF Converter</h1>
        <form id="convertForm">
            <div class="form-group">
                <label for="docxFile">Select DOCX File:</label>
                <input type="file" id="docxFile" accept=".docx" required>
            </div>
            <button type="submit" id="convertBtn">Convert to PDF</button>
        </form>
        
        <div class="loading" id="loading">
            <div class="spinner"></div>
            <p>Converting your document...</p>
        </div>
        
        <div class="result success" id="successResult">
            <h3>Conversion Successful!</h3>
            <p>Your PDF has been generated successfully.</p>
            <a id="downloadLink" href="#" target="_blank">Download PDF</a>
        </div>
        
        <div class="result error" id="errorResult">
            <h3>Conversion Failed</h3>
            <p id="errorMessage"></p>
        </div>
    </div>

    <script>
        document.getElementById('convertForm').addEventListener('submit', async function(e) {
            e.preventDefault();
            
            const fileInput = document.getElementById('docxFile');
            const convertBtn = document.getElementById('convertBtn');
            const loading = document.getElementById('loading');
            const successResult = document.getElementById('successResult');
            const errorResult = document.getElementById('errorResult');
            const errorMessage = document.getElementById('errorMessage');
            const downloadLink = document.getElementById('downloadLink');
            
            // Reset UI
            successResult.style.display = 'none';
            errorResult.style.display = 'none';
            
            if (!fileInput.files.length) {
                showError('Please select a file');
                return;
            }
            
            const file = fileInput.files[0];
            if (!file.name.endsWith('.docx')) {
                showError('Please select a DOCX file');
                return;
            }
            
            // Show loading
            convertBtn.disabled = true;
            loading.style.display = 'block';
            
            try {
                const formData = new FormData();
                formData.append('file', file);
                
                const response = await fetch('http://localhost:8000/convert', {
                    method: 'POST',
                    body: formData
                });
                
                const result = await response.json();
                
                if (result.success) {
                    // Show success
                    loading.style.display = 'none';
                    successResult.style.display = 'block';
                    downloadLink.href = 'http://localhost:8000' + result.pdf_url;
                } else {
                    throw new Error(result.error || 'Conversion failed');
                }
            } catch (error) {
                showError(error.message || 'An error occurred during conversion');
            } finally {
                convertBtn.disabled = false;
                loading.style.display = 'none';
            }
        });
        
        function showError(message) {
            document.getElementById('loading').style.display = 'none';
            document.getElementById('errorResult').style.display = 'block';
            document.getElementById('errorMessage').textContent = message;
        }
    </script>
</body>
</html>