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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>4gCAPTCHA</title>
+    <style>
+        body { font-family: sans-serif; display: flex; flex-direction: column; align-items: center; margin-top: 50px; background: #f4f4f4;}
+        #captcha-container { position: relative; width: 400px; height: 427px; border: 1px solid #ccc; margin-bottom: 20px; background: #fff; box-shadow: 0 4px 6px rgba(0,0,0,0.1); }
+        #captcha-image { width: 100%; height: 100%; pointer-events: none; }
+        #grid { position: absolute; top: 27px; left: 0; width: 400px; height: 400px; display: grid; grid-template-columns: repeat(4, 100px); grid-template-rows: repeat(4, 100px); }
+        .cell { width: 100px; height: 100px; box-sizing: border-box; cursor: pointer; border: 2px solid transparent; transition: all 0.1s; }
+        .cell:hover { border: 2px solid rgba(255, 255, 255, 0.5); }
+        .cell.selected { border: 3px solid #00ff00; background: rgba(0, 255, 0, 0.25); }
+        #controls { display: flex; gap: 10px; }
+        button { padding: 10px 20px; cursor: pointer; font-size: 16px; border: none; border-radius: 4px; background: #007bff; color: white; }
+        button:hover { background: #0056b3; }
+        #result { margin-top: 20px; font-weight: bold; font-size: 18px; }
+        p { max-width: 600px; text-align: center; line-height: 1.5; color: #444; margin-bottom: 25px; }
+        a { color: #007bff; text-decoration: none; }
+        a:hover { text-decoration: underline; }
+    </style>
+</head>
+<body>
+    <h2>4gCAPTCHA</h2>
+    <p>4gcaptcha is a captcha server based on the one used in <a href="https://git.lolcat.ca/lolcat/4get">4get</a><br/>
+        The module below demonstrates what a captcha could look like.
+        <br/>Please refer to the <a href="https://git.moekyun.me/4captcha/about">README on the repo for more info</a>
+    </p>
+    <div id="captcha-container">
+        <img id="captcha-image" src="" alt="Loading captcha..." />
+        <div id="grid"></div>
+    </div>
+    <div id="controls">
+        <button onclick="loadCaptcha()" style="background: #6c757d;">Reload</button>
+        <button onclick="verifyCaptcha()">Verify</button>
+    </div>
+    <div id="result"></div>
+    <script>
+        let currentToken = '';
+        let selectedCells = new Set();
+        const grid = document.getElementById('grid');
+        for (let i = 0; i < 16; i++) {
+            const cell = document.createElement('div');
+            cell.className = 'cell';
+            cell.dataset.index = i;
+            cell.onclick = () => toggleCell(cell, i);
+            grid.appendChild(cell);
+        }
+        function toggleCell(cell, index) {
+            if (selectedCells.has(index)) {
+                selectedCells.delete(index);
+                cell.classList.remove('selected');
+            } else {
+                selectedCells.add(index);
+                cell.classList.add('selected');
+            }
+        }
+        async function loadCaptcha() {
+            selectedCells.clear();
+            document.querySelectorAll('.cell').forEach(c => c.classList.remove('selected'));
+            document.getElementById('result').innerText = 'Loading...';
+            document.getElementById('result').style.color = '#333';
+            try {
+                const res = await fetch('/generate');
+                const data = await res.json();
+                if (data.error) throw new Error(data.error);
+                currentToken = data.token;
+                document.getElementById('captcha-image').src = data.image;
+                document.getElementById('result').innerText = '';
+            } catch (err) {
+                document.getElementById('result').innerText = 'Error: ' + err.message;
+                document.getElementById('result').style.color = 'red';
+            }
+        }
+        async function verifyCaptcha() {
+            if (!currentToken) return;
+            try {
+                const res = await fetch('/verify', {
+                    method: 'POST',
+                    headers: { 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ token: currentToken, answers: Array.from(selectedCells) })
+                });
+                const data = await res.json();
+                if (data.success) {
+                    document.getElementById('result').style.color = 'green';
+                    document.getElementById('result').innerText = 'Success! You passed the captcha.';
+                } else {
+                    document.getElementById('result').style.color = 'red';
+                    document.getElementById('result').innerText = 'Failed: ' + (data.error || 'Incorrect answers') + '. Reloading...';
+                    setTimeout(loadCaptcha, 1500);
+                }
+            } catch (err) {
+                document.getElementById('result').innerText = 'Error: ' + err.message;
+                document.getElementById('result').style.color = 'red';
+            }
+        }
+        loadCaptcha();
+    </script>
+</body>
+</html>