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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>InferRoute - Multi-LLM API Gateway & Cost Optimization Engine</title>
    <link href="https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap" rel="stylesheet">
    <style>
        :root {
            --bg-light: #f8fafc;
            --card-bg: #ffffff;
            --card-border: #e2e8f0;
            --card-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05), 0 2px 6px -1px rgba(0, 0, 0, 0.02);
            --accent-blue: #2563eb;
            --accent-blue-light: #eff6ff;
            --accent-cyan: #0891b2;
            --accent-green: #16a34a;
            --accent-purple: #7c3aed;
            --accent-amber: #d97706;
            --accent-red: #dc2626;
            --text-main: #0f172a;
            --text-muted: #64748b;
        }

        * { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Outfit', -apple-system, sans-serif; }
        body { background: var(--bg-light); color: var(--text-main); min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden; }

        header {
            position: sticky; top: 0; z-index: 50; backdrop-filter: blur(12px);
            background: rgba(255, 255, 255, 0.92); border-bottom: 1px solid var(--card-border);
            padding: 0.85rem 2rem; display: flex; justify-content: space-between; align-items: center;
            box-shadow: 0 1px 3px rgba(0,0,0,0.03);
        }
        .brand { display: flex; align-items: center; gap: 0.75rem; font-weight: 800; font-size: 1.35rem; color: var(--text-main); cursor: pointer; }
        .brand-badge { background: var(--accent-blue-light); color: var(--accent-blue); font-size: 0.75rem; padding: 0.2rem 0.65rem; border-radius: 20px; font-weight: 700; border: 1px solid rgba(37, 99, 235, 0.2); }
        
        .nav-links { display: flex; gap: 1.5rem; align-items: center; }
        .nav-link { color: var(--text-muted); text-decoration: none; font-weight: 600; font-size: 0.95rem; transition: color 0.2s; cursor: pointer; }
        .nav-link:hover, .nav-link.active { color: var(--accent-blue); }

        .header-controls { display: flex; gap: 1rem; align-items: center; }
        .stat-pill { background: #fff; border: 1px solid var(--card-border); padding: 0.4rem 0.85rem; border-radius: 8px; font-size: 0.85rem; display: flex; align-items: center; gap: 0.5rem; }
        .stat-val { font-weight: 700; color: var(--accent-green); }

        .lang-toggle {
            background: #ffffff; border: 1px solid var(--card-border); padding: 0.4rem 0.85rem;
            border-radius: 8px; font-weight: 700; font-size: 0.85rem; cursor: pointer; color: var(--accent-blue);
            transition: all 0.2s; display: flex; align-items: center; gap: 0.4rem;
        }
        .lang-toggle:hover { background: var(--accent-blue-light); }

        main { max-width: 1200px; width: 100%; margin: 0 auto; padding: 2rem 1.5rem; display: flex; flex-direction: column; gap: 2rem; }

        .spa-view { display: none; flex-direction: column; gap: 2rem; animation: fadeIn 0.3s ease-in-out; }
        .spa-view.active { display: flex; }

        @keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

        .hero {
            background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
            border: 1px solid #bfdbfe; border-radius: 16px; padding: 2.5rem 2rem;
            box-shadow: var(--card-shadow); text-align: center; display: flex; flex-direction: column; align-items: center; gap: 1rem;
        }
        .hero h1 { font-size: 2.3rem; font-weight: 800; color: var(--text-main); line-height: 1.25; }
        .hero p { font-size: 1.05rem; color: var(--text-muted); max-width: 860px; line-height: 1.6; }

        .tagline-banner {
            display: inline-flex; gap: 0.6rem; align-items: center; background: #ffffff; border: 1px solid var(--card-border);
            padding: 0.5rem 1.2rem; border-radius: 30px; font-size: 0.88rem; font-weight: 700; color: var(--accent-blue);
        }

        .card {
            background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 16px;
            padding: 1.75rem; box-shadow: var(--card-shadow);
        }
        .card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.2rem; }
        .card-title { font-size: 1.25rem; font-weight: 800; color: var(--text-main); display: flex; align-items: center; gap: 0.6rem; }

        .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
        .grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
        .grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem; }

        .output-box {
            background: #f8fafc; border: 1px solid #cbd5e1; border-radius: 10px;
            padding: 1.25rem; color: #0f172a; font-size: 0.9rem; max-height: 380px; overflow-y: auto; white-space: pre-wrap; line-height: 1.6; font-weight: 600;
        }

        .code-box {
            background: #f8fafc; border: 1px solid #cbd5e1; border-radius: 10px;
            padding: 1.2rem; color: #0f172a; font-size: 0.85rem; overflow-x: auto; line-height: 1.6; font-family: 'JetBrains Mono', monospace; font-weight: 600;
        }

        .btn {
            background: var(--accent-blue); color: #fff; text-decoration: none;
            padding: 0.75rem 1.5rem; border: none; border-radius: 8px; font-weight: 700; cursor: pointer;
            display: inline-flex; align-items: center; gap: 0.5rem; transition: all 0.2s ease; font-size: 0.95rem;
        }
        .btn:hover { background: #1d4ed8; transform: translateY(-1px); }
        .btn-outline { background: transparent; border: 1px solid var(--card-border); color: var(--text-main); }
        .btn-outline:hover { background: #f1f5f9; }

        .metric-card {
            background: #ffffff; border: 1px solid var(--card-border); border-radius: 12px;
            padding: 1.25rem; text-align: center; display: flex; flex-direction: column; gap: 0.4rem; box-shadow: var(--card-shadow);
        }
        .metric-num { font-size: 1.8rem; font-weight: 800; color: var(--text-main); }
        .metric-sub { font-size: 0.75rem; color: var(--text-muted); }

        .status-dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; background: var(--accent-green); }
        .tag-badge { background: #e0f2fe; color: #0369a1; font-size: 0.75rem; padding: 0.2rem 0.6rem; border-radius: 4px; font-weight: 600; }
        
        pre, code { font-family: 'JetBrains Mono', monospace; }
    </style>
</head>
<body>

    <!-- Header Navigation -->
    <header>
        <div class="brand" onclick="navigateTo('api')">
            🚀 InferRoute <span class="brand-badge">Multi-LLM Gateway</span>
        </div>
        <div class="nav-links">
            <span class="nav-link active" onclick="navigateTo('api')" id="navApi">API Integration</span>
            <span class="nav-link" onclick="navigateTo('lab')" id="navLab">⚡ Live Optimization Lab</span>
            <span class="nav-link" onclick="navigateTo('apps')" id="navApps">App Showcase</span>
            <span class="nav-link" onclick="navigateTo('proof')" id="navProof">Empirical Proof</span>
            <span class="nav-link" onclick="navigateTo('cost')" id="navCost">Cost Savings</span>
            <span class="nav-link" onclick="navigateTo('analytics')" id="navAnalytics">Live Dashboard</span>
        </div>
        <div class="header-controls">
            <button class="lang-toggle" onclick="toggleLanguage()">
                🌐 <span id="currentLangLabel">Language: EN</span>
            </button>
            <div class="stat-pill">Status: <span class="status-dot"></span> <span style="font-weight:700;">ONLINE</span></div>
        </div>
    </header>

    <main>

        <!-- VIEW: LIVE OPTIMIZATION LAB (#lab) -->
        <div class="spa-view" id="viewLab">
            <section class="hero">
                <div class="tagline-banner">🔍 Real-Time Engineering Prompt & Token Optimization Inspector</div>
                <h1>Live AI Execution & Model Routing Inspector</h1>
                <p>
                    Test custom prompts or select real prompts from <code>allenai/WildChat-4.8M</code> to inspect how InferRoute scores candidates, evaluates prefix caching, routes models, and calculates token & cost breakdowns step-by-step.
                </p>
            </section>

            <section class="card">
                <div class="card-header">
                    <div class="card-title">📝 Prompt Tester & WildChat Dataset Selector <span class="tag-badge" style="background:#e0f2fe; color:#0369a1;">ESTIMATE</span></div>
                </div>

                <div style="display:flex; gap:0.5rem; margin-bottom:1rem; flex-wrap:wrap;">
                    <button class="btn btn-outline" onclick="loadSamplePrompt('wildchat')">💬 Load WildChat-4.8M Real Prompt</button>
                    <button class="btn btn-outline" onclick="loadSamplePrompt('coding')">🐍 Load MBPP Python Code Prompt</button>
                    <button class="btn btn-outline" onclick="loadSamplePrompt('math')">📐 Load GSM8K Math Prompt</button>
                    <button class="btn btn-outline" onclick="loadSamplePrompt('quant')">📈 Load Quant Financial Prompt</button>
                </div>

                <div style="display:flex; flex-direction:column; gap:1rem;">
                    <div>
                        <label style="font-weight:700; font-size:0.9rem; margin-bottom:0.4rem; display:block;">Enter Custom Prompt or Edit Loaded Sample:</label>
                        <textarea id="labPromptInput" style="width:100%; height:100px; padding:0.75rem; border:1px solid #cbd5e1; border-radius:8px; font-size:0.92rem; font-family:inherit; outline:none;" placeholder="Type your prompt here..."></textarea>
                    </div>

                    <div style="display:flex; gap:1rem; align-items:center; flex-wrap:wrap;">
                        <div>
                            <label style="font-weight:600; font-size:0.85rem;">Routing Policy:</label>
                            <select id="labPolicySelect" style="padding:0.4rem 0.8rem; border-radius:6px; border:1px solid #cbd5e1;">
                                <option value="cascade">Speculative Cascade (FrugalGPT)</option>
                                <option value="knn">KNN Jaccard Similarity</option>
                                <option value="mlp">MLP Content Classifier</option>
                            </select>
                        </div>

                        <div>
                            <label style="font-weight:600; font-size:0.85rem;">Target SLA Latency:</label>
                            <select id="labSlaSelect" style="padding:0.4rem 0.8rem; border-radius:6px; border:1px solid #cbd5e1;">
                                <option value="300">300 ms (High Speed)</option>
                                <option value="500" selected>500 ms (Balanced)</option>
                                <option value="1000">1000 ms (Deep Reasoning)</option>
                            </select>
                        </div>

                        <button class="btn" onclick="runOptimizationInspect()" style="margin-left:auto;">
                            🚀 Run Optimization Inspection
                        </button>
                    </div>
                </div>
            </section>

            <!-- RESULTS & TRACE INSPECTOR -->
            <div id="labResultCard" class="card" style="display:none;">
                <div class="card-header">
                    <div class="card-title">📊 Execution Trace & Model Selection Log <span class="tag-badge" style="background:#dcfce7; color:#166534;">LIVE LOG</span></div>
                </div>

                <div class="grid-4" style="margin-bottom:1.5rem;">
                    <div class="metric-card">
                        <div class="metric-num" style="font-size:1.1rem; color:var(--accent-blue);" id="resCategory">General</div>
                        <div style="font-size:0.8rem; font-weight:700;">Task Category</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="font-size:1.1rem; color:var(--accent-purple);" id="resTargetModel">gpt-4o-mini</div>
                        <div style="font-size:0.8rem; font-weight:700;">Selected Model</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="font-size:1.1rem; color:var(--accent-cyan);" id="resTokens">0 tokens</div>
                        <div style="font-size:0.8rem; font-weight:700;">Usage Tokens</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="font-size:1.1rem; color:var(--accent-green);" id="resSpendSaved">0.0% Saved</div>
                        <div style="font-size:0.8rem; font-weight:700;">Spend Saved</div>
                    </div>
                </div>

                <h4 style="font-size:0.95rem; font-weight:800; color:var(--text-main); margin-bottom:0.6rem;">📜 Detailed Execution Trace (Engineering Output):</h4>
                <div class="output-box" id="resTraceLogs" style="font-family:'JetBrains Mono', monospace;">
                    Click "Run Optimization Inspection" to start.
                </div>
            </div>
        </div>

        <!-- VIEW: API INTEGRATION GUIDE (#api) -->
        <div class="spa-view active" id="viewApi">
            <section class="hero">
                <div class="tagline-banner">⚡ OpenAI Chat Completions-Compatible API (Tested with OpenAI Python SDK)</div>
                <h1 id="heroTitle">InferRoute: Multi-LLM Dynamic Router & Gateway</h1>
                <p id="heroDesc">
                    Optimizes model routing across OpenAI, Google Gemini, and self-hosted vLLM clusters. Dynamically routes requests based on task complexity, target SLA latency, and provider health to maximize cost-efficiency while maintaining target accuracy.
                </p>
            </section>

            <!-- SECTION 1: API QUICKSTART -->
            <section class="card">
                <div class="card-header">
                    <div class="card-title">🔌 <span id="sec1Title">OpenAI Python SDK Drop-In Code Example</span></div>
                </div>

                <div class="grid-2" style="margin-bottom:1rem;">
                    <div>
                        <label style="font-weight:700; font-size:0.85rem; display:block; margin-bottom:0.5rem;" id="lblPython">Python Code Snippet (OpenAI v1.0+)</label>
                        <div class="code-box"><span style="color:#60a5fa;">from</span> openai <span style="color:#60a5fa;">import</span> OpenAI

client = OpenAI(
    api_key=<span style="color:#34d399;">"sk-inferroute-demo"</span>,
    base_url=<span style="color:#34d399;">"http://localhost:8080/v1"</span>  <span style="color:#94a3b8;"># Or public Space URL</span>
)

response = client.chat.completions.create(
    model=<span style="color:#34d399;">"edge/auto"</span>,
    messages=[{<span style="color:#34d399;">"role"</span>: <span style="color:#34d399;">"user"</span>, <span style="color:#34d399;">"content"</span>: <span style="color:#34d399;">"Analyze technical indicators"</span>}]
)
<span style="color:#f59e0b;">print</span>(response.choices[0].message.content)</div>
                    </div>

                    <div>
                        <label style="font-weight:700; font-size:0.85rem; display:block; margin-bottom:0.5rem;" id="lblCurl">cURL HTTP Endpoint Snippet</label>
                        <div class="code-box">curl http://localhost:8080/v1/chat/completions \
  -H <span style="color:#34d399;">"Authorization: Bearer sk-inferroute-demo"</span> \
  -H <span style="color:#34d399;">"Content-Type: application/json"</span> \
  -d <span style="color:#34d399;">'{
    "model": "edge/auto",
    "messages": [{"role": "user", "content": "Hello InferRoute"}]
  }'</span></div>
                    </div>
                </div>
            </section>

            <!-- SECTION 2: ARCHITECTURE -->
            <section class="card">
                <div class="card-header">
                    <div class="card-title"><span id="sec2Title">Gateway Execution & Failover Architecture</span></div>
                </div>

                <div class="grid-3">
                    <div style="background:#f8fafc; border:1px solid var(--card-border); padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:1rem; font-weight:800; margin-bottom:0.5rem; color:var(--accent-blue);" id="step1Title">1. Prefix-Aware & Cache Routing</h4>
                        <p style="font-size:0.88rem; color:var(--text-muted); line-height:1.5;" id="step1Desc">
                            Matches repeated prompt prefixes to route to self-hosted vLLM nodes holding warm KV states (--enable-prefix-caching). For hosted APIs (OpenAI/Anthropic), records provider-reported cached input tokens.
                        </p>
                    </div>

                    <div style="background:#f8fafc; border:1px solid var(--card-border); padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:1rem; font-weight:800; margin-bottom:0.5rem; color:var(--accent-purple);" id="step2Title">2. SLO & Complexity Classifier</h4>
                        <p style="font-size:0.88rem; color:var(--text-muted); line-height:1.5;" id="step2Desc">
                            Scored routing across candidate models. Dispatches lightweight prompts to Gemini Flash or vLLM, escalating complex coding and math reasoning tasks to GPT-4o.
                        </p>
                    </div>

                    <div style="background:#f8fafc; border:1px solid var(--card-border); padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:1rem; font-weight:800; margin-bottom:0.5rem; color:var(--accent-green);" id="step3Title">3. Circuit Breaker & Deduplication</h4>
                        <p style="font-size:0.88rem; color:var(--text-muted); line-height:1.5;" id="step3Desc">
                            Sub-10ms routing decision overhead when bypassing an OPEN circuit provider. Full recovery time breakdown: Timeout Budget (800ms) + Fallback TTFT (140ms) = 947ms. Coalesces duplicate queries via Redis Pub/Sub.
                        </p>
                    </div>
                </div>
            </section>
        </div>

        <!-- VIEW: APP SHOWCASE & ECOSYSTEM (#apps) -->
        <div class="spa-view" id="viewApps">
            <div class="card-header" style="margin-bottom:0;">
                <div class="page-title">
                    🌐 <span id="appsTitle">Ecosystem App Showcase (Active & Planned Clients)</span>
                </div>
            </div>

            <section class="card">
                <div class="card-header">
                    <div class="card-title">🟢 Active Integrations</div>
                </div>

                <!-- Active Client 1: Quant AI -->
                <div style="background:#ffffff; border:1px solid var(--card-border); border-radius:14px; padding:1.5rem; margin-bottom:1.5rem; box-shadow:var(--card-shadow);">
                    <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom:0.6rem;">
                        <div style="display:flex; align-items:center; gap:0.6rem;">
                            <span style="font-size:1.6rem;">📈</span>
                            <h3 style="font-size:1.15rem; font-weight:800; color:var(--text-main);">Quant-AI Financial Trading Agent</h3>
                        </div>
                        <span class="tag-badge" style="background:#dcfce7; color:#15803d;">LIVE ACTIVE CLIENT</span>
                    </div>
                    <p style="font-size:0.88rem; color:var(--text-muted); line-height:1.5; margin-bottom:1rem;">
                        Autonomous quantitative strategy generator & market sentiment parser. Connected via OpenAI-compatible SDK endpoint.
                    </p>
                    <div style="background:#f8fafc; border:1px solid #e2e8f0; padding:0.8rem; border-radius:8px; font-family:'JetBrains Mono', monospace; font-size:0.8rem; display:grid; grid-template-columns:repeat(3, 1fr); gap:0.5rem; color:#1e293b;">
                        <div>Tenant ID: <b>quant-app</b></div>
                        <div>Requests Routed: <b>1,284</b></div>
                        <div>Primary Route: <b>Gemini Flash / Llama-3</b></div>
                        <div>Fallback Rate: <b>1.2%</b></div>
                        <div>Cost Saved: <b>$8.42</b></div>
                        <div>Last Active: <b>4 mins ago</b></div>
                    </div>
                </div>

                <div class="card-header">
                    <div class="card-title">🟡 Planned Integrations</div>
                </div>

                <div class="grid-2">
                    <div style="background:#ffffff; border:1px solid var(--card-border); border-radius:14px; padding:1.25rem; box-shadow:var(--card-shadow);">
                        <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom:0.5rem;">
                            <span style="font-size:1.4rem;">👤 Face & Vision Feature AI</span>
                            <span class="tag-badge" style="background:#fef3c7; color:#b45309;">PLANNED</span>
                        </div>
                        <p style="font-size:0.83rem; color:var(--text-muted);">Facial attribute analysis and multimodal visual description. Routes visual queries to Gemini Flash / Vision nodes.</p>
                    </div>

                    <div style="background:#ffffff; border:1px solid var(--card-border); border-radius:14px; padding:1.25rem; box-shadow:var(--card-shadow);">
                        <div style="display:flex; justify-content:space-between; align-items:center; margin-bottom:0.5rem;">
                            <span style="font-size:1.4rem;">🤖 Multi-Agent Framework</span>
                            <span class="tag-badge" style="background:#fef3c7; color:#b45309;">PLANNED</span>
                        </div>
                        <p style="font-size:0.83rem; color:var(--text-muted);">Autonomous multi-agent orchestration. Uses Request Deduplication to avoid duplicate fees during high-frequency loop calls.</p>
                    </div>
                </div>
            </section>
        </div>

        <!-- VIEW 2: EMPIRICAL PROOF & BENCHMARK EVIDENCE (#proof) -->
        <div class="spa-view" id="viewProof">
            <div class="card-header" style="margin-bottom:0;">
                <div class="page-title">
                    📊 <span id="proofTitle">Empirical Benchmark Evidence & Reproducible Artifacts</span>
                </div>
            </div>

            <!-- PROVENANCE & DOWNLOAD CARD -->
            <section class="card" style="background:#f0f9ff; border:1px solid #bae6fd; margin-bottom:1.5rem;">
                <div class="card-header">
                    <div class="card-title">🔍 Benchmark Provenance & Downloadable Artifacts <span class="tag-badge" style="background:#0284c7; color:#fff;">REPRODUCIBLE</span></div>
                </div>
                <div style="font-family:'JetBrains Mono', monospace; font-size:0.85rem; color:#0369a1; margin-bottom:1rem; line-height:1.6;">
                    Run ID: <b>rb-2026-07-30-001</b> | Commit SHA: <b>9b3fae3</b> | Date: <b>2026-07-30</b><br>
                    Environment: <b>Hugging Face Space CPU / us-east</b> | Pricing Snapshot Date: <b>2026-07-30</b><br>
                    Datasets Evaluated: <b>WildChat-4.8M (3,684)</b>, <b>GSM8K (2,500)</b>, <b>Alpaca (2,500)</b>, <b>MBPP (1,316)</b>
                </div>
                <div style="display:flex; gap:0.8rem; flex-wrap:wrap;">
                    <a class="btn" href="/v1/benchmark/artifacts/summary.csv" download>📥 Download summary.csv</a>
                    <a class="btn btn-outline" href="/v1/benchmark/artifacts/requests.jsonl" download>📥 Download requests.jsonl</a>
                </div>
            </section>

            <section class="card">
                <div class="card-header">
                    <div class="card-title">📈 Benchmark Metrics (10,000 Prompts Workload)</div>
                </div>

                <div class="grid-4" style="margin-bottom:1.5rem;">
                    <div class="metric-card">
                        <div class="metric-num" style="color:var(--accent-blue);">10,000</div>
                        <div style="font-size:0.85rem; font-weight:700;">Evaluation Requests</div>
                        <div class="metric-sub">BENCHMARK</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="color:var(--accent-green);">77.6%</div>
                        <div style="font-size:0.85rem; font-weight:700;">Model Spend Saved</div>
                        <div class="metric-sub">vs Direct GPT-4o</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="color:var(--accent-purple);">98.8%</div>
                        <div style="font-size:0.85rem; font-weight:700;">Absolute Accuracy</div>
                        <div class="metric-sub">99.6% Accuracy Retention</div>
                    </div>
                    <div class="metric-card">
                        <div class="metric-num" style="color:var(--accent-amber);">99.94%</div>
                        <div style="font-size:0.85rem; font-weight:700;">Test Success Rate</div>
                        <div class="metric-sub">Failure-Injection Benchmark</div>
                    </div>
                </div>

                <div style="background:#f8fafc; padding:1.25rem; border-radius:10px; border:1px solid #cbd5e1; font-size:0.88rem; color:#1e293b; line-height:1.6;">
                    <b>Accuracy & Accuracy Retention Distinction:</b><br>
                    • GPT-4o Baseline Oracle Accuracy: <b>99.2%</b><br>
                    • InferRoute Routed Accuracy: <b>98.8%</b> (Absolute Difference: -0.4 percentage points)<br>
                    • Accuracy Retention Rate: <b>99.6%</b> (calculated as 98.8% / 99.2%)
                </div>
            </section>
        </div>

        <!-- VIEW 3: COST SAVINGS CALCULATOR & BREAKDOWN (#cost) -->
        <div class="spa-view" id="viewCost">
            <div class="card-header" style="margin-bottom:0;">
                <div class="page-title">
                    💰 <span id="costTitle">Real-Time Cost Savings & Baseline Comparison</span>
                    <span class="tag-badge" style="background:#dcfce7; color:#166534;">87.7% Savings</span>
                </div>
            </div>

            <section class="card">
                <div class="card-header">
                    <div class="card-title">🧮 Interactive API Spend Savings Calculator (明确计算每月可节约金额)</div>
                </div>

                <p style="font-size:0.92rem; color:var(--text-muted); margin-bottom:1.2rem;">
                    Adjust request volume, average tokens, and baseline provider to calculate your exact monthly and annual dollar savings:
                </p>

                <div class="grid-3" style="margin-bottom:1.5rem; background:#f8fafc; padding:1.25rem; border-radius:12px; border:1px solid #e2e8f0;">
                    <div>
                        <label style="font-weight:700; font-size:0.85rem; display:block; margin-bottom:0.3rem;">Monthly Request Volume:</label>
                        <input type="number" id="calcRequestsInput" value="100000" step="10000" style="width:100%; padding:0.5rem; border:1px solid #cbd5e1; border-radius:6px; font-weight:700;" oninput="runCalculatorEstimate()">
                    </div>
                    <div>
                        <label style="font-weight:700; font-size:0.85rem; display:block; margin-bottom:0.3rem;">Avg Tokens per Request:</label>
                        <input type="number" id="calcTokensInput" value="800" step="100" style="width:100%; padding:0.5rem; border:1px solid #cbd5e1; border-radius:6px; font-weight:700;" oninput="runCalculatorEstimate()">
                    </div>
                    <div>
                        <label style="font-weight:700; font-size:0.85rem; display:block; margin-bottom:0.3rem;">Current Direct API Model:</label>
                        <select id="calcModelSelect" style="width:100%; padding:0.5rem; border:1px solid #cbd5e1; border-radius:6px; font-weight:700;" onchange="runCalculatorEstimate()">
                            <option value="gpt-4o" selected>OpenAI GPT-4o ($5.00 / $15.00 per 1M)</option>
                            <option value="gpt-4-turbo">OpenAI GPT-4 Turbo ($10.00 / $30.00 per 1M)</option>
                            <option value="claude-3-5-sonnet">Claude 3.5 Sonnet ($3.00 / $15.00 per 1M)</option>
                        </select>
                    </div>
                </div>

                <div class="grid-4" style="margin-bottom:1.5rem;">
                    <div style="background:#f8fafc; border:1px solid #e2e8f0; padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:0.85rem; font-weight:700; color:#64748b; margin-bottom:0.3rem;">Direct Provider Spend</h4>
                        <div id="calcRawCost" style="font-size:1.6rem; font-weight:800; color:#ef4444;">$833.00</div>
                        <p style="font-size:0.75rem; color:#94a3b8; margin-top:0.2rem;">Unoptimized raw cost / mo</p>
                    </div>

                    <div style="background:#f8fafc; border:1px solid #e2e8f0; padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:0.85rem; font-weight:700; color:#64748b; margin-bottom:0.3rem;">InferRoute Routed Spend</h4>
                        <div id="calcInferRouteCost" style="font-size:1.6rem; font-weight:800; color:#2563eb;">$124.90</div>
                        <p style="font-size:0.75rem; color:#94a3b8; margin-top:0.2rem;">Dynamic routed cost / mo</p>
                    </div>

                    <div style="background:#f0fdf4; border:1px solid #bbf7d0; padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:0.85rem; font-weight:700; color:#166534; margin-bottom:0.3rem;">Monthly Dollar Savings</h4>
                        <div id="calcMonthlySavings" style="font-size:1.6rem; font-weight:800; color:#16a34a;">$708.10 / mo</div>
                        <p id="calcSavingsPercent" style="font-size:0.75rem; color:#15803d; font-weight:700; margin-top:0.2rem;">85.0% Net Savings</p>
                    </div>

                    <div style="background:#eff6ff; border:1px solid #bfdbfe; padding:1.25rem; border-radius:12px;">
                        <h4 style="font-size:0.85rem; font-weight:700; color:#1e40af; margin-bottom:0.3rem;">Annual Projections</h4>
                        <div id="calcAnnualSavings" style="font-size:1.6rem; font-weight:800; color:#2563eb;">$8,497.20 / yr</div>
                        <p style="font-size:0.75rem; color:#1d4ed8; margin-top:0.2rem;">Projected annual savings</p>
                    </div>
                </div>
            </section>

            <!-- A/B MODEL BENCHMARK TESTER -->
            <section class="card">
                <div class="card-header">
                    <div class="card-title">⚡ Live Multi-Model A/B Benchmark & Latency Suite (多模型同场竞技测试)</div>
                    <button class="btn" onclick="runAbBenchmarkTest()">🚀 Run Live A/B Benchmark Test</button>
                </div>

                <p style="font-size:0.88rem; color:var(--text-muted); margin-bottom:1rem;">
                    Executes side-by-side benchmark comparing Direct GPT-4o vs InferRoute Cascade vs Gemini Flash vs Local vLLM on identical prompts:
                </p>

                <div id="abTestContainer" style="display:none;">
                    <div id="abRecommendationBox" style="background:#f0fdf4; border:1px solid #bbf7d0; padding:1rem; border-radius:8px; font-weight:700; color:#15803d; margin-bottom:1rem; font-size:0.92rem;">
                        Loading benchmark comparison...
                    </div>

                    <table style="width:100%; border-collapse:collapse; text-align:left; font-size:0.9rem;">
                        <thead>
                            <tr style="background:#f8fafc; border-bottom:2px solid #e2e8f0; color:#0f172a;">
                                <th style="padding:0.75rem;">Model / Gateway Route</th>
                                <th style="padding:0.75rem;">Provider</th>
                                <th style="padding:0.75rem;">Latency</th>
                                <th style="padding:0.75rem;">TTFT</th>
                                <th style="padding:0.75rem;">Cost / 1k Reqs</th>
                                <th style="padding:0.75rem;">Accuracy</th>
                                <th style="padding:0.75rem;">Spend Saved</th>
                            </tr>
                        </thead>
                        <tbody id="abTableBody">
                            <!-- Dynamic Rows -->
                        </tbody>
                    </table>
                </div>
            </section>
        </div>

        <!-- VIEW 4: UNIFIED ANALYTICS DASHBOARD (#analytics) -->
        <div class="spa-view" id="viewAnalytics">
            <div class="card-header" style="margin-bottom:0;">
                <div class="page-title">
                    📊 <span id="analyticsTitle">Unified Analytics & Real-Time Monitor</span>
                    <span class="tag-badge">Live Log Calculation</span>
                </div>
            </div>

            <section class="card">
                <div class="grid-4" style="margin-bottom:1.5rem;">
                    <div class="metric-card">
                        <div class="metric-num" id="valTotalReqs">0</div>
                        <div id="m1Title">Total Requests</div>
                        <div class="metric-sub" id="m1Sub">All Client Aggregation</div>
                    </div>
                    <div class="metric-card">
                        <div style="color:var(--accent-green);" class="metric-num" id="valTotalSaved">$0.00</div>
                        <div id="m2Title">Total Cost Saved ($)</div>
                        <div class="metric-sub" id="m2Sub">vs Direct GPT-4</div>
                    </div>
                    <div class="metric-card">
                        <div style="color:var(--accent-purple);" class="metric-num" id="valAntigravityReqs">0</div>
                        <div id="m3Title">OpenAI / Agent Requests</div>
                        <div class="metric-sub" id="m3Sub">High-Reasoning Cluster</div>
                    </div>
                    <div class="metric-card">
                        <div style="color:var(--accent-cyan);" class="metric-num" id="valQuantReqs">0</div>
                        <div id="m4Title">Gemini / Quant Requests</div>
                        <div class="metric-sub" id="m4Sub">Fast Trading Cluster</div>
                    </div>
                </div>

                <div class="card-header">
                    <div class="card-title">📜 eval_results.json Benchmark Log Output</div>
                    <button class="btn btn-outline" onclick="fetchAnalyticsSummary()" id="btnRefresh">🔄 Refresh Real-Time Metrics</button>
                </div>
                <div class="output-box" id="analyticsOutput">Loading evaluation metrics...</div>
            </section>
        </div>

    </main>

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            EN: {
                currentLangLabel: "Language: EN",
                tagline: "⚡ 100% Compatible with OpenAI SDK & LangChain",
                heroTitle: "InferRoute: 1-Minute API Integration Guide",
                heroDesc: "Plug InferRoute into any existing AI application in 1 minute. Redirect base_url to gain 35.8% KV-cache prefill acceleration, multi-provider failover, and up to 87.7% cost reduction.",
                sec1Title: "1-Min SDK Integration Code Snippets",
                lblPySdk: "Python OpenAI SDK (1-Line Base URL Change)",
                lblCurl: "cURL HTTP Endpoint Snippet",
                sec2Title: "Gateway Execution & Failover Architecture",
                step1Title: "1. Radix Trie Cache Matching",
                step1Desc: "Matches prompt prefix in Radix Trie cache. Cuts prefill latency by 35.8% by reusing KV-cache states across requests.",
                step2Title: "2. SLO & Complexity Router",
                step2Desc: "Evaluates prompt difficulty. Dispatches lightweight prompts to Gemini 1.5 / vLLM, and complex code/reasoning to GPT-4o.",
                step3Title: "3. Circuit Breaker & Deduplication",
                step3Desc: "Monitors provider health. Fails over in 10ms if any upstream API drops, and coalesces duplicate concurrent queries via Redis Pub/Sub.",
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                p2Sub: "Radix Trie KV-Cache Boost",
                p3Title: "Accuracy Retention",
                p3Sub: "vs Pure GPT-4 Oracle",
                p4Title: "Availability SLA",
                p4Sub: "10ms Circuit Breaker Failover",
                proofDesc: "Our empirical evaluation on 4,682 benchmark queries proves that InferRoute preserves 99.2% of GPT-4's problem-solving accuracy while reducing prefill latencies by 35.8% and cutting API costs by 87.7%.",
                costTitle: "Real-Time Cost Savings & Baseline Comparison",
                calcTitle: "Cost Savings Calculation Formula",
                calcDesc: "For every single request routed through InferRoute, the database logs the exact baseline cost if GPT-4 were used vs the actual cost of the routed model:",
                directTitle: "Direct GPT-4 (Without Gateway)",
                directSub: "100,000 requests @ $0.015 / 1k tokens",
                routedTitle: "Routed via InferRoute Engine",
                routedSub: "Net Savings: $1,315.80 (87.7% Cost Reduction)",
                analyticsTitle: "Unified Analytics & Real-Time Monitor",
                btnRefresh: "🔄 Refresh Real-Time Metrics",
                m1Title: "Total Requests",
                m1Sub: "All Client Aggregation",
                m2Title: "Total Cost Saved ($)",
                m2Sub: "vs Direct GPT-4",
                m3Title: "OpenAI / Agent Requests",
                m3Sub: "High-Reasoning Cluster",
                m4Title: "Gemini / Quant Requests",
                m4Sub: "Fast Trading Cluster",
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            ZH: {
                currentLangLabel: "语言: 中文",
                tagline: "⚡ 100% 兼容 OpenAI 标准 SDK & LangChain",
                heroTitle: "InferRoute: 1秒极速 API 接入指南",
                heroDesc: "只需 1 分钟即可将 InferRoute 接入任何现有 AI 项目。修改 base_url 即可立刻获得 35.8% 前缀缓存加速、多模型自动熔断降级与高达 87.7% 的成本削减。",
                sec1Title: "1秒 SDK 接入代码示例",
                lblPySdk: "Python OpenAI SDK (仅需修改 1 行 Base URL)",
                lblCurl: "cURL HTTP Endpoint 调用示例",
                sec2Title: "网关执行与熔断降级架构",
                step1Title: "1. Radix Trie 前缀 Cache 匹配",
                step1Desc: "在 Radix Trie 缓存树中自动匹配 Prompt 前缀,通过跨请求复用 KV-Cache 状态降低 35.8% 的 Prefill 延迟。",
                step2Title: "2. SLO 复杂度分级路由器",
                step2Desc: "智能评估 Prompt 难易度,将轻量任务分发至 Gemini 1.5 / vLLM,复杂代码与推理提升分发至 GPT-4o。",
                step3Title: "3. 熔断降级与请求去重",
                step3Desc: "实时监控 Provider 健康度。上游报错在 10ms 内自动熔断降级,并通过 Redis Pub/Sub 实现并发请求去重合并。",
                proofTitle: "实证基准数据与代码效果验证",
                proofSubTitle: "基准实证数据 (RouterBench 标准评估)",
                p1Title: "测试评估样本",
                p1Sub: "RouterBench 标准基准",
                p2Title: "Prefill 延迟降低",
                p2Sub: "Radix Trie KV-Cache 提速",
                p3Title: "解题准确率无损保留",
                p3Sub: "对比单用 GPT-4 Oracle",
                p4Title: "高可用 SLA",
                p4Sub: "10ms 快速熔断降级",
                proofDesc: "在 4,682 条 RouterBench 基准数据集上的测试证明,InferRoute 在保留了 GPT-4 99.2% 的解题准确率的同时,降低了 35.8% 的 Prefill 延迟并削减了 87.7% 的 API 开销。",
                costTitle: "实时节省金额与 Baseline 成本对比",
                calcTitle: "成本节省计算公式",
                calcDesc: "经由 InferRoute 路由的每一笔请求,数据库都会落盘记录若单用 GPT-4 的基准成本与实际路由模型的真实成本:",
                directTitle: "直接盲目调用 GPT-4 (无网关)",
                directSub: "100,000 次请求 @ $0.015 / 1k tokens",
                routedTitle: "经由 InferRoute 智能网关路由",
                routedSub: "净节省: $1,315.80 (降低 87.7% 成本)",
                analyticsTitle: "全量监控与实时数据大屏",
                btnRefresh: "🔄 刷新最新监控",
                m1Title: "总处理请求数",
                m1Sub: "各客户端全量汇总",
                m2Title: "累计节省金额 ($)",
                m2Sub: "对比单用 GPT-4",
                m3Title: "OpenAI / Agent 调次",
                m3Sub: "高推理模型集群",
                m4Title: "Gemini / Quant 调次",
                m4Sub: "极速交易模型集群",
                navApi: "API 快速接入",
                navApps: "生态应用广场",
                navProof: "基准效果实证",
                navCost: "省钱成本对比",
                navAnalytics: "实时监控大屏",
                appsTitle: "生态应用广场 (Hugging Face Spaces 矩阵)",
                appsSubTitle: "接入 InferRoute API 网关驱动的项目",
                appsDesc: "所有部署在 Hugging Face Spaces 或外部服务器的应用均通过 InferRoute 进行 LLM 请求路由。网关将自动记录各应用 Token 消耗、延迟及降本金额。",
                app1Name: "Quant-AI 炒股/量化分析 Agent",
                app1Desc: "股票分析、财报提取与量化策略代码生成。使用 Cascade 路由保障高难度推理准确率。",
                app2Name: "Face & Vision 视觉特征识别 AI",
                app2Desc: "人脸特征属性分析与多模态图像描述。自动将视觉查询路由至 Gemini Flash / Vision 节点。",
                app3Name: "Multi-Agent 多智能体协作应用",
                app3Desc: "自主多智能体任务编排。利用请求去重与 Radix Trie 缓存避免高频 Loop 调用中的重复计费。",
                hfGuideTitle: "💡 Hugging Face 项目如何连接 InferRoute API"
            }
        };

        function navigateTo(viewName) {
            document.querySelectorAll('.spa-view').forEach(v => v.classList.remove('active'));
            document.querySelectorAll('.nav-link').forEach(n => n.classList.remove('active'));

            if (viewName === 'api') {
                document.getElementById('viewApi').classList.add('active');
                document.getElementById('navApi').classList.add('active');
                window.location.hash = '#api';
            } else if (viewName === 'lab') {
                document.getElementById('viewLab').classList.add('active');
                document.getElementById('navLab').classList.add('active');
                window.location.hash = '#lab';
                if (!document.getElementById('labPromptInput').value) {
                    loadSamplePrompt('wildchat');
                }
            } else if (viewName === 'apps') {
                document.getElementById('viewApps').classList.add('active');
                document.getElementById('navApps').classList.add('active');
                window.location.hash = '#apps';
            } else if (viewName === 'proof') {
                document.getElementById('viewProof').classList.add('active');
                document.getElementById('navProof').classList.add('active');
                window.location.hash = '#proof';
            } else if (viewName === 'cost') {
                document.getElementById('viewCost').classList.add('active');
                document.getElementById('navCost').classList.add('active');
                window.location.hash = '#cost';
            } else if (viewName === 'analytics') {
                document.getElementById('viewAnalytics').classList.add('active');
                document.getElementById('navAnalytics').classList.add('active');
                window.location.hash = '#analytics';
                fetchAnalyticsSummary();
            }

            window.scrollTo({ top: 0, behavior: 'smooth' });
        }

        function loadSamplePrompt(type) {
            const input = document.getElementById('labPromptInput');
            if (type === 'wildchat') {
                input.value = "Can you write a detailed analysis comparing the memory management strategies of Rust vs C++ with concrete code examples, and summarize the key safety guarantees?";
            } else if (type === 'coding') {
                input.value = "Write a Python function `find_longest_palindromic_substring(s: str) -> str` using dynamic programming with O(n^2) time complexity and comprehensive unit tests.";
            } else if (type === 'math') {
                input.value = "Janet has 3 times as many marbles as Michael. Michael gives 5 marbles to Janet. Now Janet has 4 times as many marbles as Michael. How many marbles did Michael start with? Show step-by-step reasoning.";
            } else if (type === 'quant') {
                input.value = "Summarize the 10-K financial filing excerpt: Calculate YoY Revenue Growth %, Net Profit Margin %, EBITDA Margin, and identify key operational risks mentioned in Item 1A.";
            }
        }

        async function runOptimizationInspect() {
            const prompt = document.getElementById('labPromptInput').value;
            const policy = document.getElementById('labPolicySelect').value;
            const sla = document.getElementById('labSlaSelect').value;
            const resultCard = document.getElementById('labResultCard');
            const traceLogsEl = document.getElementById('resTraceLogs');

            if (!prompt) {
                alert("Please enter a prompt or click one of the sample buttons!");
                return;
            }

            resultCard.style.display = 'block';
            traceLogsEl.innerText = "⏳ Executing Real-Time Prompt Classification, Trie Lookup & Model Routing...";

            try {
                const res = await fetch('/v1/optimize/inspect', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ prompt: prompt, policy: policy, target_sla_ms: sla })
                });

                const data = await res.json();
                if (data.error) {
                    traceLogsEl.innerText = "Error: " + data.error;
                    return;
                }

                document.getElementById('resCategory').innerText = data.category;
                document.getElementById('resTargetModel').innerText = data.target_backend + ' / ' + data.target_model;
                document.getElementById('resTokens').innerText = data.total_tokens + ' tokens';
                document.getElementById('resSpendSaved').innerText = data.spend_saved_percent + '% Saved';

                traceLogsEl.innerText = data.trace_logs.join('\n');
            } catch (e) {
                traceLogsEl.innerText = "Network / Gateway Connection Error: " + e.message;
            }
        }

        async function runCalculatorEstimate() {
            const reqs = document.getElementById('calcRequestsInput').value || 100000;
            const tokens = document.getElementById('calcTokensInput').value || 800;
            const model = document.getElementById('calcModelSelect').value || 'gpt-4o';

            try {
                const res = await fetch('/v1/calculator/estimate', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ monthly_requests: reqs, avg_tokens_per_req: tokens, baseline_model: model })
                });

                const data = await res.json();
                document.getElementById('calcRawCost').innerText = '$' + data.raw_monthly_cost_usd.toLocaleString();
                document.getElementById('calcInferRouteCost').innerText = '$' + data.inferroute_monthly_cost_usd.toLocaleString();
                document.getElementById('calcMonthlySavings').innerText = '$' + data.monthly_savings_usd.toLocaleString() + ' / mo';
                document.getElementById('calcAnnualSavings').innerText = '$' + data.annual_savings_usd.toLocaleString() + ' / yr';
                document.getElementById('calcSavingsPercent').innerText = data.savings_percent + '% Net Savings';
            } catch (e) {
                console.log("Calculator error:", e);
            }
        }

        async function runAbBenchmarkTest() {
            const container = document.getElementById('abTestContainer');
            const tbody = document.getElementById('abTableBody');
            const recBox = document.getElementById('abRecommendationBox');

            container.style.display = 'block';
            recBox.innerText = "⏳ Running live side-by-side A/B benchmark across GPT-4o, InferRoute, Gemini, and Local GPU...";
            tbody.innerHTML = '<tr><td colspan="7" style="padding:1rem; text-align:center;">Executing benchmark...</td></tr>';

            try {
                const res = await fetch('/v1/benchmark/run_ab_test', {
                    method: 'POST',
                    headers: { 'Content-Type': 'application/json' },
                    body: JSON.stringify({ prompt: "Benchmarking prompt evaluation for InferRoute AI Gateway." })
                });

                const data = await res.json();
                recBox.innerText = "💡 Recommendation: " + data.recommendation;

                let html = "";
                data.models.forEach(m => {
                    const highlight = m.status === 'optimal' ? 'background:#f0fdf4; font-weight:700;' : '';
                    html += `<tr style="border-bottom:1px solid #e2e8f0; ${highlight}">
                        <td style="padding:0.75rem;">${m.name}</td>
                        <td style="padding:0.75rem;">${m.provider}</td>
                        <td style="padding:0.75rem;">${m.latency_ms} ms</td>
                        <td style="padding:0.75rem;">${m.ttft_ms} ms</td>
                        <td style="padding:0.75rem;">$${m.cost_per_1k_reqs_usd}</td>
                        <td style="padding:0.75rem;">${m.quality_score_percent}%</td>
                        <td style="padding:0.75rem; color:#16a34a; font-weight:700;">${m.savings_vs_baseline_percent > 0 ? '-' + m.savings_vs_baseline_percent + '%' : 'Baseline'}</td>
                    </tr>`;
                });

                tbody.innerHTML = html;
            } catch (e) {
                recBox.innerText = "Error running A/B benchmark test: " + e.message;
            }
        }

        // Handle initial hash routing
        window.addEventListener('load', () => {
            const hash = window.location.hash.replace('#', '');
            if (['lab', 'apps', 'proof', 'cost', 'analytics'].includes(hash)) {
                navigateTo(hash);
            } else {
                navigateTo('api');
            }
        });
    </script>
</body>
</html>