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<!DOCTYPE html>
<html lang="en" data-theme="dark">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Sentinel Arbitrage Engine</title>
    
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@picocss/pico@2/css/pico.min.css">
    <script src="https://cdn.socket.io/4.7.5/socket.io.min.js"></script>

    <style>
        :root {
            --pico-font-family: 'SF Mono', 'Consolas', 'Menlo', monospace;
            --pico-font-size: 14px;
            --pico-color-green-400: #34D399;
            --pico-color-red-400: #F87171;
            --pico-color-amber-400: #FBBF24;
        }

        body {
            background-color: #111927;
            color: #E5E7EB;
        }

        .container {
            max-width: 1280px;
            margin: 1.5rem auto;
            padding: 0 1rem;
        }

        header {
            text-align: center;
            margin-bottom: 1.5rem;
        }

        h1 {
            color: #38BDF8;
            margin-bottom: 0;
            font-weight: 600;
        }

        table {
            width: 100%;
            border-collapse: collapse;
        }

        th {
            background-color: #374151;
            text-align: left;
            position: sticky;
            top: 0;
            z-index: 10;
        }

        td, th {
            padding: 0.75rem 1rem;
            border-bottom: 1px solid #374151;
            vertical-align: middle;
        }

        tbody tr {
            animation: fadeIn 0.7s ease-out forwards;
        }

        .buy { color: var(--pico-color-green-400); }
        .sell { color: var(--pico-color-red-400); }
        
        .risk-low { color: var(--pico-color-green-400); }
        .risk-medium { color: var(--pico-color-amber-400); }
        .risk-high { color: var(--pico-color-red-400); }

        .status-bar {
            font-size: 12px;
            color: #9CA3AF;
            text-align: right;
            margin-bottom: 1rem;
        }
        .status-online { color: #34D399; }
        .status-offline { color: #F87171; }
        
        /* --- NEW STYLES FOR THE FIX --- */
        .asset-cell {
            display: grid;
            grid-template-columns: auto 1fr;
            gap: 12px;
            align-items: center;
        }
        .asset-logo {
            width: 24px;
            height: 24px;
        }
        .asset-cell a {
            color: inherit;
            text-decoration: none;
            font-weight: bold;
        }
        .asset-cell a:hover {
            text-decoration: underline;
        }
        /* --- END NEW STYLES --- */

        @keyframes fadeIn {
            from { background-color: rgba(52, 211, 153, 0.2); opacity: 0; }
            to { background-color: transparent; opacity: 1; }
        }
    </style>
</head>
<body>
    <main class="container">
        <header>
            <h1>Sentinel Arbitrage Engine</h1>
        </header>

        <div class="status-bar">
            Engine Status: <span id="status-light" class="status-offline">OFFLINE</span> | Last Signal: <span id="last-update-time">--:--:--</span>
        </div>

        <article>
            <table>
                <thead>
                    <tr>
                        <th>Pair</th>
                        <th>Oracle 1 (Pyth)</th>
                        <th>Oracle 2 (Agg.)</th>
                        <th>Discrepancy</th>
                        <th>AI Risk</th>
                        <th>AI Strategy</th>
                    </tr>
                </thead>
                <tbody id="opportunities-table">
                    <tr id="placeholder-row"><td colspan="6" style="text-align:center; padding: 2rem;">Connecting to engine...</td></tr>
                </tbody>
            </table>
        </article>
    </main>

    <script>
        const ASSET_CONFIG = {
            'BTC': { 
                logo: 'https://s2.coinmarketcap.com/static/img/coins/64x64/1.png',
                link: 'https://www.coingecko.com/en/coins/bitcoin'
            },
            'ETH': {
                logo: 'https://s2.coinmarketcap.com/static/img/coins/64x64/1027.png',
                link: 'https://www.coingecko.com/en/coins/ethereum'
            },
            'SOL': {
                logo: 'https://s2.coinmarketcap.com/static/img/coins/64x64/5426.png',
                link: 'https://www.coingecko.com/en/coins/solana'
            }
        };

        const socket = io();
        const statusLight = document.getElementById('status-light');
        const opportunitiesTable = document.getElementById('opportunities-table');
        const lastUpdateTime = document.getElementById('last-update-time');

        socket.on('connect', () => {
            console.log('✅ Connected to Sentinel Engine.');
            statusLight.textContent = 'ONLINE';
            statusLight.className = 'status-online';
            document.getElementById('placeholder-row').cells[0].textContent = 'Monitoring for oracle dislocations...';
        });

        socket.on('disconnect', () => {
            console.log('🔥 Disconnected from Sentinel Engine.');
            statusLight.textContent = 'OFFLINE';
            statusLight.className = 'status-offline';
        });

        socket.on('new_signal', (signal) => {
            console.log('⚡️ New Signal Received:', signal);
            document.getElementById('placeholder-row')?.remove();

            const isPythCheaper = signal.pyth_price < signal.chainlink_price;
            const newRow = opportunitiesTable.insertRow(0);

            const assetInfo = ASSET_CONFIG[signal.asset] || { logo: '', link: '#' };

            // --- THE CRITICAL FIX IS HERE ---
            newRow.innerHTML = `
                <td>
                    <div class="asset-cell">
                        <img src="${assetInfo.logo}" class="asset-logo" alt="${signal.asset} logo">
                        <a href="${assetInfo.link}" target="_blank">${signal.asset}/USD</a>
                    </div>
                </td>
                <td><span class="${isPythCheaper ? 'buy' : 'sell'}">${signal.pyth_price.toLocaleString('en-US', { style: 'currency', currency: 'USD' })}</span></td>
                <td><span class="${!isPythCheaper ? 'buy' : 'sell'}">${signal.chainlink_price.toLocaleString('en-US', { style: 'currency', currency: 'USD' })}</span></td>
                <td><strong>${signal.spread_pct.toFixed(3)}%</strong></td>
                <td><span class="risk-${signal.risk.toLowerCase()}">${signal.risk}</span></td>
                <td>${signal.strategy}</td>
            `;
            
            lastUpdateTime.textContent = new Date(signal.timestamp).toLocaleTimeString('en-US');
        });
    </script>
</body>
</html>