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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>System Status | Live Monitor</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    
    <link rel="preconnect" href="https://fonts.googleapis.com">
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
    <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&family=JetBrains+Mono:wght@400;700&display=swap" rel="stylesheet">
    
    <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.2/dist/css/bootstrap.min.css" rel="stylesheet">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap-icons@1.11.1/font/bootstrap-icons.css">

    <style>
        :root {
            --bg-color: #0b0f19;
            --card-bg: rgba(23, 32, 51, 0.7);
            --border-color: rgba(255, 255, 255, 0.1);
            --accent-green: #10b981;
            --accent-red: #ef4444;
            --text-muted: #94a3b8;
        }

        body {
            background-color: var(--bg-color);
            background-image: 
                radial-gradient(at 0% 0%, rgba(16, 185, 129, 0.1) 0px, transparent 50%),
                radial-gradient(at 100% 100%, rgba(59, 130, 246, 0.1) 0px, transparent 50%);
            color: #fff;
            font-family: 'Inter', sans-serif;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        /* --- Header Stats --- */
        .stats-bar {
            background: rgba(255,255,255,0.03);
            border-bottom: 1px solid var(--border-color);
            padding: 15px 0;
            margin-bottom: 40px;
            backdrop-filter: blur(10px);
        }

        .stat-item {
            border-right: 1px solid var(--border-color);
        }
        .stat-item:last-child { border-right: none; }
        .stat-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 1px; }
        .stat-value { font-family: 'JetBrains Mono', monospace; font-size: 1.2rem; font-weight: 700; }

        /* --- Cards --- */
        .monitor-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(12px);
        }

        .monitor-card:hover {
            transform: translateY(-5px);
            border-color: rgba(255, 255, 255, 0.2);
            box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
        }

        /* --- Typography & Elements --- */
        h5 { font-weight: 600; font-size: 1.1rem; margin: 0; }
        .mono-text { font-family: 'JetBrains Mono', monospace; font-size: 0.85rem; color: var(--text-muted); }
        
        /* --- Status Indicators --- */
        .status-dot {
            height: 10px;
            width: 10px;
            border-radius: 50%;
            display: inline-block;
            margin-right: 8px;
        }

        .status-online {
            background-color: var(--accent-green);
            box-shadow: 0 0 10px var(--accent-green);
            animation: pulse-green 2s infinite;
        }

        .status-offline {
            background-color: var(--accent-red);
            box-shadow: 0 0 10px var(--accent-red);
            animation: pulse-red 2s infinite;
        }

        @keyframes pulse-green {
            0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(16, 185, 129, 0); }
            100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
        }
        @keyframes pulse-red {
            0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
            70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
            100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
        }

        /* --- Progress Bar --- */
        .reliability-track {
            height: 6px;
            background: rgba(255,255,255,0.1);
            border-radius: 3px;
            margin-top: 15px;
            margin-bottom: 8px;
            overflow: hidden;
        }
        .reliability-bar {
            height: 100%;
            border-radius: 3px;
            transition: width 0.5s ease;
        }

        /* --- Loading Skeleton --- */
        .skeleton {
            background: linear-gradient(90deg, #1f2937 25%, #374151 50%, #1f2937 75%);
            background-size: 200% 100%;
            animation: loading 1.5s infinite;
            border-radius: 4px;
            color: transparent !important;
        }
        @keyframes loading {
            0% { background-position: 200% 0; }
            100% { background-position: -200% 0; }
        }
    </style>
</head>
<body>

<div class="stats-bar sticky-top">
    <div class="container">
        <div class="row align-items-center">
            <div class="col-md-4 mb-2 mb-md-0">
                <div class="d-flex align-items-center gap-2">
                    <i class="bi bi-activity text-primary fs-4"></i>
                    <h4 class="m-0 fw-bold">Uptime<span class="text-primary">Monitor</span></h4>
                </div>
            </div>
            <div class="col-md-8">
                <div class="row text-center text-md-end">
                    <div class="col-4 stat-item">
                        <div class="stat-label">System Uptime</div>
                        <div class="stat-value text-white" id="server-uptime">--:--:--</div>
                    </div>
                    <div class="col-4 stat-item">
                        <div class="stat-label">Active Monitors</div>
                        <div class="stat-value text-info" id="monitor-count">-</div>
                    </div>
                    <div class="col-4 stat-item">
                        <div class="stat-label">Server Time</div>
                        <div class="stat-value text-warning" id="server-time">--:--</div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

<div class="container pb-5">
    <div class="d-flex justify-content-between align-items-end mb-4">
        <div>
            <h2 class="fw-bold mb-1">Service Status</h2>
            <p class="text-muted m-0">Real-time performance metrics</p>
        </div>
        <div class="text-end">
            <span class="badge bg-dark border border-secondary text-secondary" id="last-updated">
                <i class="bi bi-arrow-repeat spin"></i> Connecting...
            </span>
        </div>
    </div>

    <div class="row g-4" id="cards-container">
        <div class="col-md-6 col-lg-4"><div class="monitor-card skeleton" style="height: 200px"></div></div>
        <div class="col-md-6 col-lg-4"><div class="monitor-card skeleton" style="height: 200px"></div></div>
        <div class="col-md-6 col-lg-4"><div class="monitor-card skeleton" style="height: 200px"></div></div>
    </div>
</div>

<script>
    // Helper to format seconds into H:M:S
    function formatDuration(seconds) {
        const h = Math.floor(seconds / 3600);
        const m = Math.floor((seconds % 3600) / 60);
        const s = Math.floor(seconds % 60);
        return `${h}h ${m}m ${s}s`;
    }

    // Helper to calculate percentage
    function calcPercentage(success, fail) {
        const total = success + fail;
        if (total === 0) return 100;
        return ((success / total) * 100).toFixed(1);
    }

    async function loadStatus() {
        try {
            const res = await fetch("/status");
            const data = await res.json();

            // 1. Update Header Stats
            document.getElementById("server-uptime").innerText = formatDuration(data.uptimeSeconds);
            document.getElementById("server-time").innerText = data.serverTime;
            document.getElementById("monitor-count").innerText = Object.keys(data.targets).length;
            
            const now = new Date();
            document.getElementById("last-updated").innerHTML = 
                `<i class="bi bi-check-circle-fill text-success"></i> Updated: ${now.toLocaleTimeString()}`;

            // 2. Build Cards
            const container = document.getElementById("cards-container");
            let html = "";

            Object.values(data.targets).forEach(t => {
                const isOnline = t.lastStatus === "online";
                const statusClass = isOnline ? "status-online" : "status-offline";
                const statusText = isOnline ? "Operational" : "Downtime Detected";
                const badgeColor = isOnline ? "text-success" : "text-danger";
                
                // Calculate reliability
                const percent = calcPercentage(t.success, t.fail);
                const barColor = percent > 90 ? 'bg-success' : (percent > 50 ? 'bg-warning' : 'bg-danger');

                html += `
                <div class="col-md-6 col-lg-4">
                    <div class="monitor-card">
                        <div class="d-flex justify-content-between align-items-start mb-3">
                            <div class="d-flex align-items-center">
                                <span class="status-dot ${statusClass}"></span>
                                <div>
                                    <h5 class="text-truncate" style="max-width: 200px;" title="${t.url}">${t.url}</h5>
                                    <small class="${badgeColor} fw-bold" style="font-size: 0.75rem;">${statusText}</small>
                                </div>
                            </div>
                            <span class="badge bg-dark border border-secondary text-muted font-monospace">
                                HTTP/2
                            </span>
                        </div>
                        
                        <div class="d-flex justify-content-between align-items-end">
                            <span class="text-muted" style="font-size: 0.8rem">Reliability</span>
                            <span class="fw-bold ${badgeColor}">${percent}%</span>
                        </div>
                        <div class="reliability-track">
                            <div class="reliability-bar ${barColor}" style="width: ${percent}%"></div>
                        </div>

                        <hr class="border-secondary opacity-25 my-3">

                        <div class="row text-center">
                            <div class="col-4 border-end border-secondary border-opacity-25">
                                <div class="d-block text-muted" style="font-size: 0.7rem">SUCCESS</div>
                                <div class="fw-bold text-white">${t.success}</div>
                            </div>
                            <div class="col-4 border-end border-secondary border-opacity-25">
                                <div class="d-block text-muted" style="font-size: 0.7rem">FAILED</div>
                                <div class="fw-bold text-danger">${t.fail}</div>
                            </div>
                            <div class="col-4">
                                <div class="d-block text-muted" style="font-size: 0.7rem">LAST PING</div>
                                <div class="mono-text text-white">${t.lastPing ? t.lastPing.split(' ')[1] : 'N/A'}</div>
                            </div>
                        </div>
                    </div>
                </div>
                `;
            });

            container.innerHTML = html;

        } catch (error) {
            console.error("Fetch error:", error);
            document.getElementById("last-updated").innerHTML = 
                `<i class="bi bi-exclamation-triangle-fill text-danger"></i> Connection Lost`;
        }
    }

    // Initial load
    loadStatus();
    // Poll every 5 seconds
    setInterval(loadStatus, 5000);

</script>
</body>
</html>