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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>Payment Credit Dashboard</title>
    <style>
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: Arial, sans-serif;
            background: linear-gradient(135deg, #0f172a, #1e293b);
            color: #fff; min-height: 100vh; padding: 20px;
        }
        .container { max-width: 1400px; margin: 0 auto; }
        .title { text-align: center; margin-bottom: 24px; }
        .title h1 { color: #38bdf8; margin-bottom: 8px; }
        .subtitle { color: #cbd5e1; }
        .dashboard { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 20px; }
        .card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 14px; padding: 20px;
            backdrop-filter: blur(8px); margin-bottom: 20px;
        }
        .card h2 { color: #38bdf8; margin-bottom: 16px; font-size: 1.05rem; }
        .state-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
        .state-box, .mini-box, .list-box {
            background: rgba(255, 255, 255, 0.05);
            border-radius: 10px; padding: 12px;
        }
        .label { font-size: 0.75rem; color: #94a3b8; text-transform: uppercase; margin-bottom: 6px; }
        .value { font-size: 1rem; font-weight: 700; }
        .hero-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 16px; }
        .pill { display: inline-block; padding: 6px 10px; border-radius: 999px; font-size: 0.8rem; font-weight: 700; }
        .low { background: rgba(34, 197, 94, 0.2); color: #86efac; }
        .medium { background: rgba(250, 204, 21, 0.18); color: #fde68a; }
        .high { background: rgba(239, 68, 68, 0.18); color: #fca5a5; }
        .btn-row { display: flex; flex-wrap: wrap; gap: 10px; }
        button {
            border: none; border-radius: 10px; padding: 12px 16px;
            font-weight: 700; cursor: pointer; transition: 0.2s ease;
        }
        button:hover { transform: translateY(-1px); }
        .primary { background: #38bdf8; color: #082f49; }
        .secondary { background: #1e293b; color: #e2e8f0; border: 1px solid rgba(255, 255, 255, 0.15); }
        .action-btn { background: #334155; color: #fff; }
        .action-btn:hover { background: #475569; }
        ul { list-style: none; padding-left: 0; }
        li { padding: 8px 0; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
        li:last-child { border-bottom: none; }
        .good { color: #86efac; font-weight: 700; }
        .bad { color: #fca5a5; font-weight: 700; }
        .reward { font-size: 2rem; font-weight: 800; color: #f8fafc; }
        .muted { color: #cbd5e1; font-size: 0.95rem; }
        .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
        .history-item {
            padding: 12px; border-radius: 10px;
            background: rgba(255, 255, 255, 0.05); margin-bottom: 10px;
        }
        .history-top {
            display: flex; justify-content: space-between; gap: 10px;
            font-weight: 700; margin-bottom: 4px; text-transform: capitalize;
        }
        .right-col { position: sticky; top: 20px; align-self: start; }
        @media (max-width: 980px) {
            .dashboard { grid-template-columns: 1fr; }
            .hero-row, .state-grid { grid-template-columns: 1fr; }
            .right-col { position: static; }
        }
    </style>
</head>
<body>
    <div class="container">
        <div class="title">
            <h1>Payment Credit Dashboard</h1>
            <div class="subtitle">Evaluate multiple actions on the same transaction until you reset.</div>
        </div>
        <div class="dashboard">
            <div>
                <div class="card">
                    <h2>Current Transaction</h2>
                    <div class="hero-row">
                        <div class="mini-box">
                            <div class="label">Transaction ID</div>
                            <div class="value mono" id="transaction_id">-</div>
                        </div>
                        <div class="mini-box">
                            <div class="label">Risk Band</div>
                            <div id="risk_band_wrap"><span class="pill" id="risk_band">-</span></div>
                        </div>
                        <div class="mini-box">
                            <div class="label">Recommended Action</div>
                            <div class="value" id="recommended_action">-</div>
                        </div>
                    </div>
                    <div class="state-grid">
                        <div class="state-box"><div class="label">Amount</div><div class="value" id="amount">-</div></div>
                        <div class="state-box"><div class="label">Credit Score</div><div class="value" id="credit_score">-</div></div>
                        <div class="state-box"><div class="label">Available Credit</div><div class="value" id="available_credit">-</div></div>
                        <div class="state-box"><div class="label">Monthly Spend</div><div class="value" id="monthly_spend">-</div></div>
                        <div class="state-box"><div class="label">Debt To Income</div><div class="value" id="debt_to_income">-</div></div>
                        <div class="state-box"><div class="label">Payment History</div><div class="value" id="payment_history">-</div></div>
                        <div class="state-box"><div class="label">Credit Utilization</div><div class="value" id="credit_utilization">-</div></div>
                        <div class="state-box"><div class="label">Last Payment Date</div><div class="value" id="last_payment_date">-</div></div>
                        <div class="state-box"><div class="label">Account Age</div><div class="value" id="account_age_months">-</div></div>
                    </div>
                </div>
                <div class="card">
                    <h2>Actions</h2>
                    <div class="btn-row" style="margin-bottom: 12px;">
                        <button class="primary" onclick="resetEnvironment()">Reset Environment</button>
                    </div>
                    <div class="btn-row">
                        <button class="action-btn" onclick="takeAction('approve_card_1')">Approve Card 1</button>
                        <button class="action-btn" onclick="takeAction('approve_card_2')">Approve Card 2</button>
                        <button class="action-btn" onclick="takeAction('route_to_debit')">Route to Debit</button>
                        <button class="action-btn" onclick="takeAction('convert_to_emi')">Convert to EMI</button>
                        <button class="action-btn" onclick="takeAction('delay_purchase')">Delay Purchase</button>
                        <button class="action-btn" onclick="takeAction('decline')">Decline</button>
                    </div>
                </div>
                <div class="card">
                    <h2>Reasons</h2>
                    <ul id="reasons_list"><li class="muted">No evaluation yet.</li></ul>
                </div>
                <div class="card">
                    <h2>Action Leaderboard</h2>
                    <ul id="leaderboard_list"><li class="muted">No evaluation yet.</li></ul>
                </div>
                <div class="card">
                    <h2>Policy Checks</h2>
                    <ul id="policy_checks_list"><li class="muted">No evaluation yet.</li></ul>
                </div>
            </div>
            <div class="right-col">
                <div class="card">
                    <h2>Last Reward</h2>
                    <div class="reward" id="last_reward">-</div>
                    <div class="muted" id="last_action">Action tested: -</div>
                </div>
                <div class="card">
                    <h2>Action History</h2>
                    <div id="audit_log"><div class="muted">No actions taken yet.</div></div>
                </div>
            </div>
        </div>
    </div>
    <script>
        const API = "http://127.0.0.1:8000";
        const money = (n) => typeof n === "number" ? new Intl.NumberFormat("en-IN", { style: "currency", currency: "INR", maximumFractionDigits: 2 }).format(n) : "-";
        function setText(id, value) { const el = document.getElementById(id); if (el) el.textContent = value ? value : "-"; }
        function setRiskBand(band) {
            const el = document.getElementById("risk_band");
            el.textContent = band || "-";
            el.className = "pill " + (band || "");
        }
        function renderState(state) {
            if (!state) return;
            setText("transaction_id", state.transaction_id);
            setText("amount", money(state.amount));
            setText("credit_score", state.credit_score);
            setText("available_credit", money(state.available_credit));
            setText("monthly_spend", money(state.monthly_spend));
            setText("debt_to_income", state.debt_to_income + "%");
            setText("payment_history", state.payment_history + "%");
            setText("credit_utilization", state.credit_utilization + "%");
            setText("last_payment_date", state.last_payment_date);
            setText("account_age_months", state.account_age_months + " months");
        }
        function renderReasons(reasons) {
            reasons = reasons || [];
            const box = document.getElementById("reasons_list");
            if (!reasons.length) { box.innerHTML = "<li class=\"muted\">No evaluation yet.</li>"; return; }
            box.innerHTML = reasons.map(r => "<li>" + r + "</li>").join("");
        }
        function renderLeaderboard(items) {
            items = items || [];
            const box = document.getElementById("leaderboard_list");
            if (!items.length) { box.innerHTML = "<li class=\"muted\">No evaluation yet.</li>"; return; }
            box.innerHTML = items.map((x, i) => "<li><strong>#" + (i + 1) + " " + x.action.replaceAll("_", " ") + "</strong><span style=\"float:right\">" + x.reward.toFixed(4) + "</span></li>").join("");
        }
        function renderPolicyChecks(items) {
            items = items || [];
            const box = document.getElementById("policy_checks_list");
            if (!items.length) { box.innerHTML = "<li class=\"muted\">No evaluation yet.</li>"; return; }
            box.innerHTML = items.map(x => "<li><div><strong>" + x.name + "</strong> - <span class=\"" + (x.passed ? "good" : "bad") + "\">" + (x.passed ? "PASS" : "FAIL") + "</span></div><div class=\"muted\">" + x.detail + "</div></li>").join("");
        }
        async function loadAuditLog() {
            const res = await fetch(API + "/audit-log");
            const data = await res.json();
            const box = document.getElementById("audit_log");
            if (!data.length) { box.innerHTML = "<div class=\"muted\">No actions taken yet.</div>"; return; }
            box.innerHTML = data.slice().reverse().map(item => "<div class=\"history-item\"><div class=\"history-top\"><span>" + item.action.replaceAll("_", " ") + "</span><span>" + item.reward.toFixed(4) + "</span></div><div class=\"muted\">" + item.timestamp + " - " + item.transaction_id + "</div><div class=\"muted\">Risk: " + item.risk_band + " - Recommended: " + item.recommended_action.replaceAll("_", " ") + "</div></div>").join("");
        }
        async function loadState() {
            const res = await fetch(API + "/state");
            const state = await res.json();
            renderState(state);
            setRiskBand("");
            setText("recommended_action", "-");
            renderReasons([]);
            renderLeaderboard([]);
            renderPolicyChecks([]);
            setText("last_reward", "-");
            setText("last_action", "Action tested: -");
            await loadAuditLog();
        }
        async function resetEnvironment() {
            const res = await fetch(API + "/reset", { method: "POST" });
            const state = await res.json();
            renderState(state);
            setRiskBand("");
            setText("recommended_action", "-");
            renderReasons([]);
            renderLeaderboard([]);
            renderPolicyChecks([]);
            setText("last_reward", "-");
            setText("last_action", "Action tested: -");
            await loadAuditLog();
        }
        async function takeAction(action) {
            const res = await fetch(API + "/step", {
                method: "POST",
                headers: { "Content-Type": "application/json" },
                body: JSON.stringify({ action: action })
            });
            const data = await res.json();
            renderState(data.state);
            setRiskBand(data.risk_band);
            setText("recommended_action", data.recommended_action.replaceAll("_", " "));
            renderReasons(data.reasons || []);
            renderLeaderboard(data.leaderboard || []);
            renderPolicyChecks(data.policy_checks || []);
            setText("last_reward", Number(data.reward).toFixed(4));
            setText("last_action", "Action tested: " + data.action.replaceAll("_", " "));
            await loadAuditLog();
        }
        loadState();
    </script>
</body>
</html>