diff --git a/traceroute-analyzer.html b/traceroute-analyzer.html
index e69de29..3036f64 100644
--- a/traceroute-analyzer.html
+++ b/traceroute-analyzer.html
@@ -0,0 +1,851 @@
+<!DOCTYPE html>
+<html lang="vi">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>Traceroute ISP Analyzer</title>
+<link href="https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Syne:wght@400;600;800&display=swap" rel="stylesheet">
+<style>
+  :root {
+    --bg: #0a0e1a;
+    --surface: #0f1525;
+    --border: #1e2d4a;
+    --accent: #00d4ff;
+    --accent2: #ff6b35;
+    --green: #00ff9d;
+    --text: #c8d8f0;
+    --muted: #4a6080;
+    --row-even: #0d1420;
+    --row-hover: #141e35;
+  }
+
+  * { margin: 0; padding: 0; box-sizing: border-box; }
+
+  body {
+    background: var(--bg);
+    color: var(--text);
+    font-family: 'JetBrains Mono', monospace;
+    min-height: 100vh;
+    overflow-x: hidden;
+  }
+
+  /* Background grid */
+  body::before {
+    content: '';
+    position: fixed;
+    inset: 0;
+    background-image:
+      linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
+      linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
+    background-size: 40px 40px;
+    pointer-events: none;
+    z-index: 0;
+  }
+
+  .container {
+    max-width: 1100px;
+    margin: 0 auto;
+    padding: 40px 24px;
+    position: relative;
+    z-index: 1;
+  }
+
+  /* Header */
+  header {
+    margin-bottom: 40px;
+  }
+
+  .header-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    background: rgba(0,212,255,0.08);
+    border: 1px solid rgba(0,212,255,0.2);
+    border-radius: 4px;
+    padding: 4px 12px;
+    font-size: 11px;
+    color: var(--accent);
+    letter-spacing: 2px;
+    text-transform: uppercase;
+    margin-bottom: 16px;
+  }
+
+  .header-badge::before {
+    content: '';
+    width: 6px; height: 6px;
+    background: var(--accent);
+    border-radius: 50%;
+    animation: pulse 2s infinite;
+  }
+
+  @keyframes pulse {
+    0%, 100% { opacity: 1; transform: scale(1); }
+    50% { opacity: 0.4; transform: scale(0.8); }
+  }
+
+  h1 {
+    font-family: 'Syne', sans-serif;
+    font-size: clamp(28px, 5vw, 48px);
+    font-weight: 800;
+    line-height: 1.1;
+    color: #fff;
+    letter-spacing: -1px;
+  }
+
+  h1 span {
+    color: var(--accent);
+  }
+
+  .subtitle {
+    margin-top: 10px;
+    font-size: 13px;
+    color: var(--muted);
+    line-height: 1.6;
+  }
+
+  /* Input area */
+  .input-section {
+    background: var(--surface);
+    border: 1px solid var(--border);
+    border-radius: 8px;
+    overflow: hidden;
+    margin-bottom: 24px;
+    transition: border-color 0.2s;
+  }
+
+  .input-section:focus-within {
+    border-color: rgba(0,212,255,0.4);
+    box-shadow: 0 0 0 1px rgba(0,212,255,0.1), 0 4px 24px rgba(0,0,0,0.4);
+  }
+
+  .input-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    padding: 12px 16px;
+    border-bottom: 1px solid var(--border);
+    background: rgba(255,255,255,0.02);
+  }
+
+  .input-label {
+    font-size: 11px;
+    color: var(--muted);
+    letter-spacing: 1.5px;
+    text-transform: uppercase;
+  }
+
+  .dot-row {
+    display: flex;
+    gap: 6px;
+  }
+
+  .dot {
+    width: 10px; height: 10px;
+    border-radius: 50%;
+  }
+
+  .dot-r { background: #ff5f57; }
+  .dot-y { background: #febc2e; }
+  .dot-g { background: #28c840; }
+
+  textarea {
+    width: 100%;
+    min-height: 200px;
+    background: transparent;
+    border: none;
+    outline: none;
+    padding: 16px;
+    color: var(--text);
+    font-family: 'JetBrains Mono', monospace;
+    font-size: 12px;
+    line-height: 1.7;
+    resize: vertical;
+  }
+
+  textarea::placeholder {
+    color: var(--muted);
+    opacity: 0.6;
+  }
+
+  /* Buttons */
+  .actions {
+    display: flex;
+    gap: 12px;
+    margin-bottom: 32px;
+    flex-wrap: wrap;
+  }
+
+  .btn {
+    display: inline-flex;
+    align-items: center;
+    gap: 8px;
+    padding: 11px 24px;
+    border-radius: 6px;
+    font-family: 'JetBrains Mono', monospace;
+    font-size: 12px;
+    font-weight: 600;
+    letter-spacing: 0.5px;
+    cursor: pointer;
+    border: none;
+    transition: all 0.15s;
+  }
+
+  .btn-primary {
+    background: var(--accent);
+    color: #000;
+  }
+
+  .btn-primary:hover {
+    background: #33ddff;
+    transform: translateY(-1px);
+    box-shadow: 0 4px 16px rgba(0,212,255,0.3);
+  }
+
+  .btn-primary:active { transform: translateY(0); }
+
+  .btn-secondary {
+    background: transparent;
+    color: var(--muted);
+    border: 1px solid var(--border);
+  }
+
+  .btn-secondary:hover {
+    border-color: var(--muted);
+    color: var(--text);
+  }
+
+  /* Status bar */
+  .status-bar {
+    display: none;
+    align-items: center;
+    gap: 10px;
+    padding: 10px 16px;
+    background: rgba(0,212,255,0.05);
+    border: 1px solid rgba(0,212,255,0.15);
+    border-radius: 6px;
+    margin-bottom: 24px;
+    font-size: 12px;
+    color: var(--accent);
+  }
+
+  .status-bar.visible { display: flex; }
+
+  .spinner {
+    width: 14px; height: 14px;
+    border: 2px solid rgba(0,212,255,0.2);
+    border-top-color: var(--accent);
+    border-radius: 50%;
+    animation: spin 0.7s linear infinite;
+    flex-shrink: 0;
+  }
+
+  @keyframes spin { to { transform: rotate(360deg); } }
+
+  /* Error */
+  .error-bar {
+    display: none;
+    align-items: center;
+    gap: 10px;
+    padding: 10px 16px;
+    background: rgba(255,107,53,0.07);
+    border: 1px solid rgba(255,107,53,0.25);
+    border-radius: 6px;
+    margin-bottom: 24px;
+    font-size: 12px;
+    color: var(--accent2);
+  }
+
+  .error-bar.visible { display: flex; }
+
+  /* Results */
+  #results { display: none; }
+  #results.visible { display: block; }
+
+  .results-header {
+    display: flex;
+    align-items: center;
+    justify-content: space-between;
+    margin-bottom: 16px;
+    flex-wrap: gap;
+    gap: 12px;
+  }
+
+  .results-title {
+    font-family: 'Syne', sans-serif;
+    font-size: 14px;
+    font-weight: 600;
+    color: var(--green);
+    letter-spacing: 1px;
+    text-transform: uppercase;
+    display: flex;
+    align-items: center;
+    gap: 8px;
+  }
+
+  .results-title::before {
+    content: '';
+    width: 8px; height: 8px;
+    background: var(--green);
+    border-radius: 50%;
+    box-shadow: 0 0 8px var(--green);
+  }
+
+  .hop-count {
+    font-size: 11px;
+    color: var(--muted);
+    background: rgba(255,255,255,0.04);
+    padding: 4px 10px;
+    border-radius: 4px;
+    border: 1px solid var(--border);
+  }
+
+  /* Table */
+  .table-wrap {
+    overflow-x: auto;
+    border: 1px solid var(--border);
+    border-radius: 8px;
+  }
+
+  table {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 12px;
+  }
+
+  thead tr {
+    background: rgba(0,212,255,0.05);
+    border-bottom: 1px solid var(--border);
+  }
+
+  th {
+    padding: 10px 14px;
+    text-align: left;
+    font-size: 10px;
+    letter-spacing: 1.5px;
+    text-transform: uppercase;
+    color: var(--muted);
+    font-weight: 600;
+    white-space: nowrap;
+  }
+
+  tbody tr {
+    border-bottom: 1px solid rgba(30,45,74,0.6);
+    transition: background 0.1s;
+    animation: rowIn 0.3s ease forwards;
+    opacity: 0;
+    transform: translateY(4px);
+  }
+
+  @keyframes rowIn {
+    to { opacity: 1; transform: translateY(0); }
+  }
+
+  tbody tr:nth-child(even) { background: var(--row-even); }
+  tbody tr:hover { background: var(--row-hover); }
+
+  td {
+    padding: 10px 14px;
+    vertical-align: middle;
+    white-space: nowrap;
+  }
+
+  .hop-num {
+    color: var(--muted);
+    font-size: 11px;
+    text-align: center;
+    width: 40px;
+  }
+
+  .ip-cell {
+    font-weight: 600;
+    color: #fff;
+    font-size: 13px;
+  }
+
+  .ip-private {
+    color: var(--muted);
+    font-size: 11px;
+  }
+
+  .ip-star {
+    color: var(--muted);
+    font-size: 18px;
+    line-height: 1;
+  }
+
+  .hostname-cell {
+    color: var(--muted);
+    font-size: 11px;
+    max-width: 220px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .isp-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 6px;
+    padding: 3px 10px;
+    border-radius: 4px;
+    font-size: 11px;
+    font-weight: 600;
+    white-space: nowrap;
+    max-width: 220px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+
+  .asn-cell {
+    font-size: 11px;
+    color: var(--accent);
+    opacity: 0.7;
+  }
+
+  .country-cell {
+    font-size: 12px;
+  }
+
+  .latency-cell {
+    font-size: 11px;
+    color: var(--green);
+    text-align: right;
+  }
+
+  .latency-na { color: var(--muted); }
+
+  /* ISP color variants */
+  .isp-0  { background: rgba(0,212,255,0.1);  color: #00d4ff; border: 1px solid rgba(0,212,255,0.2); }
+  .isp-1  { background: rgba(255,107,53,0.1); color: #ff6b35; border: 1px solid rgba(255,107,53,0.2); }
+  .isp-2  { background: rgba(0,255,157,0.1);  color: #00ff9d; border: 1px solid rgba(0,255,157,0.2); }
+  .isp-3  { background: rgba(190,100,255,0.1);color: #be64ff; border: 1px solid rgba(190,100,255,0.2); }
+  .isp-4  { background: rgba(255,220,50,0.1); color: #ffdc32; border: 1px solid rgba(255,220,50,0.2); }
+  .isp-5  { background: rgba(255,80,120,0.1); color: #ff5078; border: 1px solid rgba(255,80,120,0.2); }
+  .isp-6  { background: rgba(80,200,255,0.1); color: #50c8ff; border: 1px solid rgba(80,200,255,0.2); }
+  .isp-7  { background: rgba(255,160,50,0.1); color: #ffa032; border: 1px solid rgba(255,160,50,0.2); }
+
+  .isp-private { background: rgba(74,96,128,0.12); color: var(--muted); border: 1px solid rgba(74,96,128,0.2); }
+  .isp-unknown { background: rgba(74,96,128,0.08); color: #3a5070; border: 1px solid rgba(74,96,128,0.15); }
+
+  /* Sample button */
+  .sample-link {
+    font-size: 11px;
+    color: var(--muted);
+    cursor: pointer;
+    text-decoration: underline;
+    text-underline-offset: 3px;
+    background: none;
+    border: none;
+    font-family: inherit;
+    transition: color 0.15s;
+  }
+  .sample-link:hover { color: var(--accent); }
+
+  /* Footer */
+  footer {
+    margin-top: 48px;
+    padding-top: 24px;
+    border-top: 1px solid var(--border);
+    font-size: 11px;
+    color: var(--muted);
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+    flex-wrap: wrap;
+    gap: 8px;
+  }
+
+  footer a { color: var(--accent); text-decoration: none; opacity: 0.7; }
+  footer a:hover { opacity: 1; }
+
+  /* Scrollbar */
+  ::-webkit-scrollbar { width: 6px; height: 6px; }
+  ::-webkit-scrollbar-track { background: var(--bg); }
+  ::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
+  ::-webkit-scrollbar-thumb:hover { background: var(--muted); }
+</style>
+</head>
+<body>
+<div class="container">
+
+  <header>
+    <div class="header-badge">Network Analyzer</div>
+    <h1>Traceroute<br><span>ISP Analyzer</span></h1>
+    <p class="subtitle">Paste traceroute output → phân tích từng hop thuộc ISP nào.<br>Hỗ trợ Windows <code>tracert</code> và Linux/macOS <code>traceroute</code>.</p>
+  </header>
+
+  <div class="input-section">
+    <div class="input-header">
+      <span class="input-label">Traceroute Output</span>
+      <div class="dot-row">
+        <div class="dot dot-r"></div>
+        <div class="dot dot-y"></div>
+        <div class="dot dot-g"></div>
+      </div>
+    </div>
+    <textarea id="traceInput" placeholder="Paste traceroute hoặc tracert output vào đây...
+
+Ví dụ (Linux):
+traceroute to google.com (142.250.66.46)
+ 1  192.168.1.1 (192.168.1.1)  1.234 ms
+ 2  10.0.0.1 (10.0.0.1)  5.678 ms
+ 3  203.113.0.1  12.345 ms
+ ...
+
+Ví dụ (Windows):
+  1    <1 ms    <1 ms    <1 ms  192.168.1.1
+  2     5 ms     4 ms     5 ms  10.0.0.1
+  3    12 ms    11 ms    13 ms  203.113.0.1"></textarea>
+  </div>
+
+  <div class="actions">
+    <button class="btn btn-primary" onclick="analyze()">
+      <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2.5"><circle cx="11" cy="11" r="8"/><path d="m21 21-4.35-4.35"/></svg>
+      Analyze Hops
+    </button>
+    <button class="btn btn-secondary" onclick="loadSample()">Load Sample</button>
+    <button class="btn btn-secondary" onclick="clearAll()">Clear</button>
+  </div>
+
+  <div class="status-bar" id="statusBar">
+    <div class="spinner"></div>
+    <span id="statusText">Đang query ISP data...</span>
+  </div>
+
+  <div class="error-bar" id="errorBar">
+    <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2"><circle cx="12" cy="12" r="10"/><line x1="12" y1="8" x2="12" y2="12"/><line x1="12" y1="16" x2="12.01" y2="16"/></svg>
+    <span id="errorText"></span>
+  </div>
+
+  <div id="results">
+    <div class="results-header">
+      <div class="results-title">Analysis Complete</div>
+      <span class="hop-count" id="hopCount"></span>
+    </div>
+    <div class="table-wrap">
+      <table>
+        <thead>
+          <tr>
+            <th style="text-align:center">#</th>
+            <th>IP Address</th>
+            <th>Hostname</th>
+            <th>ISP / Organization</th>
+            <th>ASN</th>
+            <th>Country</th>
+            <th style="text-align:right">Latency</th>
+          </tr>
+        </thead>
+        <tbody id="tableBody"></tbody>
+      </table>
+    </div>
+  </div>
+
+  <footer>
+    <span>ISP data via <a href="https://ipinfo.io" target="_blank">ipinfo.io</a> — IPv4 &amp; IPv6, free tier</span>
+    <span>Chỉ dùng local · không gửi data lên server</span>
+  </footer>
+
+</div>
+
+<script>
+// ─── ISP color map ───────────────────────────────────────────────────────────
+const ispColorMap = {};
+let ispColorIndex = 0;
+
+function getIspClass(isp) {
+  if (!isp) return 'isp-unknown';
+  const key = isp.toLowerCase().replace(/\s+as\d+/i, '').trim();
+  if (!(key in ispColorMap)) {
+    ispColorMap[key] = `isp-${ispColorIndex % 8}`;
+    ispColorIndex++;
+  }
+  return ispColorMap[key];
+}
+
+// ─── IP detection helpers ────────────────────────────────────────────────────
+const IPV4_RE = /\b(\d{1,3}(?:\.\d{1,3}){3})\b/;
+// Match full IPv6 address — must come before any whitespace or closing paren
+// Handles: full, compressed (::), and mixed forms
+const IPV6_FULL_RE = /([0-9a-fA-F]{0,4}(?::[0-9a-fA-F]{0,4}){2,7})/;
+
+function extractIP(str) {
+  if (!str) return null;
+  str = str.trim();
+  const v4 = str.match(IPV4_RE);
+  if (v4) return v4[1];
+  const v6 = str.match(IPV6_FULL_RE);
+  if (v6 && v6[1].includes(':')) return v6[1].toLowerCase();
+  return null;
+}
+
+function isIPv6(ip) {
+  return ip && ip.includes(':');
+}
+
+// ─── Parse traceroute ────────────────────────────────────────────────────────
+function parseTraceroute(text) {
+  const lines = text.trim().split('\n');
+  const hops = [];
+
+  for (const line of lines) {
+    if (/^traceroute|^Tracing|^over a maximum|^\s*$/.test(line)) continue;
+
+    // Pattern A: hop# hostname (IP) latency...
+    // Handles both IPv4 and IPv6 inside parens
+    // e.g.: " 3  static.vnpt.vn (2001:ee0:37f:fff3::182)  0.798 ms ..."
+    let m = line.match(/^\s*(\d+)\s+(\S+)\s+\(([^)]+)\)\s+(.*)/);
+    if (m) {
+      const ip = extractIP(m[3]);
+      // m[2] could be the same as IP (some traceroute formats repeat it)
+      const hostname = (ip && m[2] === ip) ? null : m[2];
+      hops.push({ hop: parseInt(m[1]), hostname, ip, latencyRaw: m[4] });
+      continue;
+    }
+
+    // Pattern B: hop# bare_IP latency...  (no hostname, no parens)
+    // Strategy: take everything from after hop# up to the first digit-ms or * pattern
+    // e.g.: " 7  2405:4802:f500::c1  5.459 ms  5.855 ms  5.858 ms"
+    // Split on 2+ spaces or transition from IP chars to space+digit
+    m = line.match(/^\s*(\d+)\s+(\S+)\s+((?:<?\d+(?:\.\d+)?\s*ms|\*)\s*.*)/);
+    if (m) {
+      const ip = extractIP(m[2]);
+      if (ip) {
+        hops.push({ hop: parseInt(m[1]), hostname: null, ip, latencyRaw: m[3] });
+        continue;
+      }
+    }
+
+    // Pattern C: Windows tracert
+    // e.g.: "  1    <1 ms    <1 ms    <1 ms  192.168.1.1"
+    m = line.match(/^\s*(\d+)\s+(<?\d+\s*ms|\*)\s+(<?\d+\s*ms|\*)\s+(<?\d+\s*ms|\*)\s+(\S+)/);
+    if (m) {
+      const raw = m[5];
+      const ip = extractIP(raw);
+      hops.push({
+        hop: parseInt(m[1]),
+        hostname: (ip && raw !== ip) ? raw : null,
+        ip: ip || null,
+        latencyRaw: [m[2], m[3], m[4]].join(' '),
+      });
+      continue;
+    }
+
+    // Pattern D: star-only hop
+    m = line.match(/^\s*(\d+)\s+[\*\s]+$/);
+    if (m) {
+      hops.push({ hop: parseInt(m[1]), hostname: null, ip: null, latencyRaw: '* * *' });
+    }
+  }
+
+  return hops;
+}
+
+// ─── Parse latency ───────────────────────────────────────────────────────────
+function parseLatency(raw) {
+  if (!raw) return null;
+  const nums = raw.match(/[\d.]+(?=\s*ms)/g);
+  if (!nums || nums.length === 0) return null;
+  const avg = nums.reduce((a, b) => a + parseFloat(b), 0) / nums.length;
+  return avg.toFixed(1);
+}
+
+// ─── Private IP check ────────────────────────────────────────────────────────
+function isPrivateIP(ip) {
+  if (!ip) return false;
+  // IPv6 loopback / link-local / unique-local
+  if (isIPv6(ip)) {
+    return ip === '::1' ||
+      /^fe80:/i.test(ip) ||
+      /^fc00:/i.test(ip) ||
+      /^fd/i.test(ip);
+  }
+  // IPv4
+  return /^10\./.test(ip) ||
+    /^192\.168\./.test(ip) ||
+    /^172\.(1[6-9]|2\d|3[01])\./.test(ip) ||
+    /^127\./.test(ip) ||
+    /^169\.254\./.test(ip);
+}
+
+// ─── Query ipinfo.io (supports IPv4 + IPv6) ──────────────────────────────────
+async function queryISPs(ips) {
+  if (ips.length === 0) return {};
+
+  // ipinfo.io doesn't have a batch endpoint (free tier), query in parallel
+  const results = await Promise.allSettled(
+    ips.map(ip =>
+      fetch(`https://ipinfo.io/${ip}/json`)
+        .then(r => r.ok ? r.json() : null)
+        .catch(() => null)
+    )
+  );
+
+  const map = {};
+  for (let i = 0; i < ips.length; i++) {
+    const val = results[i].status === 'fulfilled' ? results[i].value : null;
+    if (val) map[ips[i]] = val;
+  }
+  return map;
+}
+
+// ─── Render table ────────────────────────────────────────────────────────────
+function renderTable(hops, ispData) {
+  const tbody = document.getElementById('tableBody');
+  tbody.innerHTML = '';
+
+  for (let i = 0; i < hops.length; i++) {
+    const h = hops[i];
+    const tr = document.createElement('tr');
+    tr.style.animationDelay = `${i * 40}ms`;
+
+    const latency = parseLatency(h.latencyRaw);
+    const isPriv = isPrivateIP(h.ip);
+    const info = h.ip && !isPriv ? ispData[h.ip] : null;
+
+    // Hop #
+    let hopTd = `<td class="hop-num">${h.hop}</td>`;
+
+    // IP
+    let ipTd;
+    if (!h.ip) {
+      ipTd = `<td><span class="ip-star">* * *</span></td>`;
+    } else if (isPriv) {
+      ipTd = `<td><span class="ip-cell">${h.ip}</span><br><span class="ip-private">private</span></td>`;
+    } else {
+      ipTd = `<td><span class="ip-cell">${h.ip}</span></td>`;
+    }
+
+    // Hostname
+    const hostnameDisplay = h.hostname || (info && info.hostname) || '—';
+    let hostTd = `<td class="hostname-cell" title="${hostnameDisplay}">${hostnameDisplay}</td>`;
+
+    // ISP — ipinfo.io returns: { org: "AS7552 Viettel", country: "VN", hostname: "..." }
+    let ispTd;
+    if (!h.ip) {
+      ispTd = `<td><span class="isp-badge isp-unknown">timeout</span></td>`;
+    } else if (isPriv) {
+      ispTd = `<td><span class="isp-badge isp-private">Private / LAN</span></td>`;
+    } else if (info && info.org) {
+      // Strip leading ASN from org name for display, keep full in title
+      const label = info.org.replace(/^AS\d+\s*/i, '') || info.org;
+      const cls = getIspClass(label);
+      ispTd = `<td><span class="isp-badge ${cls}" title="${info.org}">${label}</span></td>`;
+    } else {
+      ispTd = `<td><span class="isp-badge isp-unknown">—</span></td>`;
+    }
+
+    // ASN
+    let asnTd;
+    if (info && info.org) {
+      const asnMatch = info.org.match(/^(AS\d+)/i);
+      asnTd = `<td class="asn-cell">${asnMatch ? asnMatch[1] : '—'}</td>`;
+    } else {
+      asnTd = `<td class="asn-cell" style="color:var(--muted)">—</td>`;
+    }
+
+    // Country
+    let countryTd;
+    if (info && info.country) {
+      const code = info.country.toUpperCase();
+      const flag = String.fromCodePoint(...[...code].map(c => 0x1F1E6 - 65 + c.charCodeAt(0)));
+      countryTd = `<td class="country-cell">${flag} ${info.country}</td>`;
+    } else {
+      countryTd = `<td class="country-cell" style="color:var(--muted)">—</td>`;
+    }
+
+    // Latency
+    let latTd;
+    if (latency) {
+      const ms = parseFloat(latency);
+      const color = ms < 20 ? 'var(--green)' : ms < 80 ? '#ffdc32' : 'var(--accent2)';
+      latTd = `<td class="latency-cell" style="color:${color}">${latency} ms</td>`;
+    } else {
+      latTd = `<td class="latency-cell latency-na">—</td>`;
+    }
+
+    tr.innerHTML = hopTd + ipTd + hostTd + ispTd + asnTd + countryTd + latTd;
+    tbody.appendChild(tr);
+  }
+}
+
+// ─── Main analyze ────────────────────────────────────────────────────────────
+async function analyze() {
+  const input = document.getElementById('traceInput').value.trim();
+  hideError();
+  hideResults();
+
+  if (!input) {
+    showError('Vui lòng paste traceroute output vào ô trên.');
+    return;
+  }
+
+  const hops = parseTraceroute(input);
+  if (hops.length === 0) {
+    showError('Không parse được hop nào. Kiểm tra lại format của traceroute output.');
+    return;
+  }
+
+  const publicIPs = hops.filter(h => h.ip && !isPrivateIP(h.ip)).map(h => h.ip);
+  const uniqueIPs = [...new Set(publicIPs)];
+
+  showStatus(`Đang query ${uniqueIPs.length} địa chỉ IP từ ipinfo.io...`);
+
+  try {
+    const ispData = await queryISPs(uniqueIPs);
+    hideStatus();
+    renderTable(hops, ispData);
+    document.getElementById('hopCount').textContent = `${hops.length} hops · ${uniqueIPs.length} public IPs`;
+    showResults();
+  } catch (err) {
+    hideStatus();
+    showError(`Lỗi khi gọi API: ${err.message}. Kiểm tra kết nối mạng và thử lại.`);
+  }
+}
+
+// ─── UI helpers ──────────────────────────────────────────────────────────────
+function showStatus(msg) {
+  document.getElementById('statusText').textContent = msg;
+  document.getElementById('statusBar').classList.add('visible');
+}
+function hideStatus() {
+  document.getElementById('statusBar').classList.remove('visible');
+}
+function showError(msg) {
+  document.getElementById('errorText').textContent = msg;
+  document.getElementById('errorBar').classList.add('visible');
+}
+function hideError() {
+  document.getElementById('errorBar').classList.remove('visible');
+}
+function showResults() {
+  document.getElementById('results').classList.add('visible');
+}
+function hideResults() {
+  document.getElementById('results').classList.remove('visible');
+}
+function clearAll() {
+  document.getElementById('traceInput').value = '';
+  hideError();
+  hideResults();
+  ispColorIndex = 0;
+  Object.keys(ispColorMap).forEach(k => delete ispColorMap[k]);
+}
+
+function loadSample() {
+  document.getElementById('traceInput').value = `traceroute to google.com (2404:6800:4005:81e::200e), 30 hops max
+ 1  192.168.1.1 (192.168.1.1)  1.123 ms  1.045 ms  0.987 ms
+ 2  10.0.0.1 (10.0.0.1)  4.567 ms  4.321 ms  4.890 ms
+ 3  static.vnpt.vn (2001:ee0:37f:fff3::182)  0.798 ms  0.788 ms  0.785 ms
+ 4  static.vnpt.vn (2001:ee0:37f:ff00::49)  0.809 ms  0.828 ms  0.906 ms
+ 5  * * *
+ 6  2402:800:6360:b::2 (2402:800:6360:b::2)  4.271 ms  4.269 ms  4.291 ms
+ 7  2405:4800:0:4:0:510b:4589:9001  6.563 ms  7.922 ms  7.957 ms
+ 8  2404:6800:4005:81e::200e  22.456 ms  21.987 ms  22.234 ms`;
+}
+
+// Enter shortcut (Ctrl+Enter)
+document.getElementById('traceInput').addEventListener('keydown', e => {
+  if (e.ctrlKey && e.key === 'Enter') analyze();
+});
+</script>
+</body>
+</html>
