diff --git a/app/page.tsx b/app/page.tsx
index 3c7303b..a8dd538 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -1,119 +1,12 @@
 import type { Metadata } from "next";
-import { promises as fs } from "node:fs";
-import path from "node:path";
+import { redirect } from "next/navigation";
 
 export const metadata: Metadata = {
-  title: "AdConsole",
-  description: "Amazon PPC teaching simulator",
+  title: "AdConsole - Amazon PPC Simulator",
+  description: "Amazon PPC teaching simulator - Migrating to React",
 };
 
-async function getLegacyStats() {
-  try {
-    const filePath = path.join(process.cwd(), "public", "adconsole.html");
-    const stat = await fs.stat(filePath);
-    return {
-      bytes: stat.size,
-      kb: Math.round(stat.size / 1024),
-      modified: stat.mtime.toLocaleString("sv-SE"),
-    };
-  } catch (e) {
-    if (process.env.NODE_ENV !== "production") {
-      console.warn("adconsole.html not found:", e);
-    }
-    return null;
-  }
-}
-
 export default async function Home() {
-  const stats = await getLegacyStats();
-
-  return (
-    <div className="min-h-screen bg-gradient-to-b from-zinc-50 to-white dark:from-black dark:to-zinc-950">
-      <main className="mx-auto flex min-h-screen w-full max-w-5xl flex-col items-stretch justify-center gap-10 px-6 py-16 sm:px-10">
-        <header className="flex flex-col gap-3">
-          <span className="inline-flex w-fit items-center gap-2 rounded-full border border-emerald-200 bg-emerald-50 px-3 py-1 text-xs font-medium text-emerald-700 dark:border-emerald-900/50 dark:bg-emerald-950/40 dark:text-emerald-300">
-            <span className="size-1.5 rounded-full bg-emerald-500" />
-            Next.js shell ready
-          </span>
-          <h1 className="text-4xl font-semibold tracking-tight text-zinc-900 dark:text-zinc-50 sm:text-5xl">
-            AdConsole
-          </h1>
-          <p className="max-w-2xl text-base leading-7 text-zinc-600 dark:text-zinc-400">
-            Amazon PPC teaching simulator. The legacy static page is preserved
-            at <code className="rounded bg-zinc-100 px-1.5 py-0.5 text-sm dark:bg-zinc-900">/adconsole.html</code>{" "}
-            while we port it into React components. Pick a path below to keep
-            moving.
-          </p>
-        </header>
-
-        <section className="grid gap-4 sm:grid-cols-2">
-          <a
-            href="/adconsole.html"
-            className="group flex flex-col gap-3 rounded-2xl border border-zinc-200 bg-white p-6 transition-all hover:border-zinc-300 hover:shadow-sm dark:border-zinc-800 dark:bg-zinc-950 dark:hover:border-zinc-700"
-          >
-            <div className="flex items-center justify-between">
-              <h2 className="text-lg font-semibold text-zinc-900 dark:text-zinc-50">
-                Open legacy page
-              </h2>
-              <span className="text-zinc-400 transition-transform group-hover:translate-x-0.5">
-                →
-              </span>
-            </div>
-            <p className="text-sm leading-6 text-zinc-600 dark:text-zinc-400">
-              Jump straight into the original AdConsole HTML — works exactly as
-              before, no rebuild required.
-            </p>
-            {stats && (
-              <dl className="mt-2 grid grid-cols-2 gap-3 border-t border-zinc-100 pt-3 text-xs text-zinc-500 dark:border-zinc-900">
-                <div>
-                  <dt className="font-medium text-zinc-400">Size</dt>
-                  <dd className="text-zinc-700 dark:text-zinc-300">
-                    {stats.kb} KB
-                  </dd>
-                </div>
-                <div>
-                  <dt className="font-medium text-zinc-400">Last modified</dt>
-                  <dd className="text-zinc-700 dark:text-zinc-300">
-                    {stats.modified}
-                  </dd>
-                </div>
-              </dl>
-            )}
-          </a>
-
-          <div className="flex flex-col gap-3 rounded-2xl border border-dashed border-zinc-300 bg-white/50 p-6 dark:border-zinc-800 dark:bg-zinc-950/40">
-            <h2 className="text-lg font-semibold text-zinc-900 dark:text-zinc-50">
-              Build the React port
-            </h2>
-            <p className="text-sm leading-6 text-zinc-600 dark:text-zinc-400">
-              Start migrating the simulator into <code className="rounded bg-zinc-100 px-1.5 py-0.5 text-sm dark:bg-zinc-900">app/</code>{" "}
-              route by route. The static HTML is the source of truth until the
-              port lands.
-            </p>
-            <ul className="mt-2 space-y-1.5 text-sm text-zinc-600 dark:text-zinc-400">
-              <li className="flex items-center gap-2">
-                <span className="size-1.5 rounded-full bg-zinc-300 dark:bg-zinc-700" />
-                <code>app/page.tsx</code> — landing shell
-              </li>
-              <li className="flex items-center gap-2">
-                <span className="size-1.5 rounded-full bg-zinc-300 dark:bg-zinc-700" />
-                <code>app/simulator/page.tsx</code> — main UI (TBD)
-              </li>
-              <li className="flex items-center gap-2">
-                <span className="size-1.5 rounded-full bg-zinc-300 dark:bg-zinc-700" />
-                <code>public/adconsole.html</code> — legacy reference
-              </li>
-            </ul>
-          </div>
-        </section>
-
-        <footer className="mt-4 flex flex-wrap items-center justify-between gap-3 border-t border-zinc-200 pt-6 text-xs text-zinc-500 dark:border-zinc-900">
-          <span>
-            Next.js · App Router · TypeScript · Tailwind v4
-          </span>
-          <span>Run <code className="rounded bg-zinc-100 px-1.5 py-0.5 dark:bg-zinc-900">npm run dev</code> to start</span>
-        </footer>
-      </main>
-    </div>
-  );
+  // Redirect directly to the legacy tool
+  redirect("/adconsole.html");
 }
diff --git a/eslint.config.mjs b/eslint.config.mjs
index 05e726d..f23fd1e 100644
--- a/eslint.config.mjs
+++ b/eslint.config.mjs
@@ -12,6 +12,8 @@ const eslintConfig = defineConfig([
     "out/**",
     "build/**",
     "next-env.d.ts",
+    // Project-specific ignores:
+    ".ijfw/**",
   ]),
 ]);
 
diff --git a/next.config.ts b/next.config.ts
index e9ffa30..1655fec 100644
--- a/next.config.ts
+++ b/next.config.ts
@@ -1,7 +1,40 @@
 import type { NextConfig } from "next";
 
 const nextConfig: NextConfig = {
-  /* config options here */
+  async headers() {
+    return [
+      {
+        source: "/(.*)",
+        headers: [
+          {
+            key: "Content-Security-Policy",
+            value: [
+              "default-src 'self'",
+              "script-src 'self' 'unsafe-inline' 'unsafe-eval' https://cdn.jsdelivr.net",
+              "style-src 'self' 'unsafe-inline' https://cdn.jsdelivr.net https://fonts.googleapis.com",
+              "font-src 'self' https://cdn.jsdelivr.net https://fonts.gstatic.com",
+              "img-src 'self' data: https:",
+              "connect-src 'self'",
+              "frame-ancestors 'none'",
+              "form-action 'self'",
+            ].join("; "),
+          },
+          {
+            key: "X-Content-Type-Options",
+            value: "nosniff",
+          },
+          {
+            key: "X-Frame-Options",
+            value: "DENY",
+          },
+          {
+            key: "Referrer-Policy",
+            value: "strict-origin-when-cross-origin",
+          },
+        ],
+      },
+    ];
+  },
 };
 
 export default nextConfig;
diff --git a/public/adconsole.html b/public/adconsole.html
index 4c2de51..1bbac37 100644
--- a/public/adconsole.html
+++ b/public/adconsole.html
@@ -45,6 +45,7 @@
 .tb-left{display:flex;align-items:center;gap:12px;min-width:0}
 .tb-icon{width:38px;height:38px;border-radius:6px;display:grid;place-items:center;color:#D5D9D9;border:1px solid transparent;transition:.15s;position:relative;flex:none}
 .tb-icon:hover{border-color:#485769;color:#fff;background:rgba(255,255,255,.05)}
+.tb-icon:focus-visible{outline:2px solid #FF9900;outline-offset:2px}
 .logo{display:flex;align-items:center;gap:2px;padding:6px 8px;border-radius:6px;border:1px solid transparent;cursor:pointer;transition:.15s;text-decoration:none;flex:none}
 .logo:hover{border-color:#485769}
 .logo-t{color:#fff;font-family:Archivo;font-weight:700;font-size:19px;letter-spacing:-.3px;line-height:1;white-space:nowrap}
@@ -75,6 +76,7 @@
 .nv-sec{font-family:Archivo;font-size:10.5px;font-weight:600;letter-spacing:1.1px;color:var(--faint);text-transform:uppercase;padding:14px 18px 6px}
 .nv{display:flex;align-items:center;gap:11px;width:calc(100% - 14px);margin:1px 7px;padding:9.5px 11px;border-radius:6px;color:#3B4149;font-size:13.5px;font-weight:400;position:relative;transition:.13s;text-align:left;border-left:3px solid transparent}
 .nv:hover{background:#F2F4F4;color:var(--ink)}
+.nv:focus-visible{outline:2px solid #FF9900;outline-offset:-2px}
 .nv.on{background:#FEF3E7;border-left-color:var(--orange);font-weight:700;color:var(--ink)}
 .nv svg{flex:none;color:#5B6570}
 .nv.on svg{color:var(--orange-d)}
@@ -118,6 +120,7 @@
 /* ---------- BUTTONS ---------- */
 .btn{display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 14px;border-radius:7px;border:1px solid var(--border);background:#fff;color:var(--ink);font-size:13px;font-weight:700;font-family:Archivo;transition:.15s;white-space:nowrap}
 .btn:hover{background:#F7FAFA;box-shadow:0 1px 3px rgba(15,17,17,.12)}
+.btn:focus-visible{outline:2px solid #FF9900;outline-offset:2px}
 .btn:active{transform:translateY(1px)}
 .btn-p{background:linear-gradient(180deg,#FFAD33,var(--orange));border-color:#E47911;color:var(--navy);position:relative;overflow:hidden}
 .btn-p:hover{background:linear-gradient(180deg,#FFB84D,var(--orange-h))}
@@ -130,8 +133,8 @@
 
 /* ---------- FORMS ---------- */
 .inp,.sel,.tarea{height:34px;border:1px solid #8A939B;border-radius:7px;padding:0 10px;background:#fff;outline:none;transition:.13s;width:100%;min-width:0}
+.inp:focus,.sel:focus,.tarea:focus,.rsel:focus{outline:2px solid #FF9900;outline-offset:1px;border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,153,0,.28)}
 .tarea{height:auto;padding:8px 10px;resize:vertical}
-.inp:focus,.sel:focus,.tarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,153,0,.28)}
 .sel{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23565959' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:28px}
 label.fld{display:block;font-family:Archivo;font-size:12px;font-weight:600;color:#3B4149;margin:0 0 5px}
 .fhint{font-size:11.5px;color:var(--faint);margin-top:4px}
@@ -546,6 +549,11 @@
 </head>
 <body>
 
+<div id="migration-banner" style="background: linear-gradient(90deg, #232F3E 0%, #131921 100%); color: #fff; padding: 12px 20px; text-align: center; font-size: 14px; position: relative; z-index: 100;">
+  <strong>Migration in Progress:</strong> This simulator is being migrated to React. 
+  <a href="https://github.com/projectamazonph/Amazon-ad-console" target="_blank" rel="noopener noreferrer" style="color: #FF9900; text-decoration: underline; margin-left: 8px;">View the new React version on GitHub &rarr;</a>
+</div>
+
 <header id="topbar">
   <div class="tb-left">
     <button class="tb-icon" data-act="burger" aria-label="Toggle navigation">
@@ -577,7 +585,7 @@
 </header>
 
 <div id="shell">
-  <aside id="sidenav">
+  <aside id="sidenav" role="navigation" aria-label="Main navigation">
     <div class="nv-sec">Advertising</div>
     <button class="nv" data-act="nav" data-view="dashboard"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><rect x="1" y="1" width="6" height="6" rx="1" stroke="currentColor" stroke-width="1.6"/><rect x="9" y="1" width="6" height="6" rx="1" stroke="currentColor" stroke-width="1.6"/><rect x="1" y="9" width="6" height="6" rx="1" stroke="currentColor" stroke-width="1.6"/><rect x="9" y="9" width="6" height="6" rx="1" stroke="currentColor" stroke-width="1.6"/></svg><span class="nv-l">Dashboard</span></button>
     <button class="nv" data-act="nav" data-view="campaigns"><svg width="16" height="16" viewBox="0 0 16 16" fill="none"><path d="M2 6v4l8 3V3L2 6Z" stroke="currentColor" stroke-width="1.6" stroke-linejoin="round"/><path d="M12.5 5.5a2.5 2.5 0 0 1 0 5M4 10.5V13h2v-2" stroke="currentColor" stroke-width="1.6" stroke-linecap="round"/></svg><span class="nv-l">Campaigns</span><span class="nv-badge" id="nvCampN">0</span></button>
@@ -1081,10 +1089,20 @@ <h3 style="font-size:19px;margin:8px 0 6px">All ${LESSONS.length} missions compl
 function perfChart(id,campId){
  const cv=document.getElementById(id);if(!cv)return;
  const b=rangeBounds();const s=seriesFor(campId,b);
+ // Helper: create segment colorizer for day-over-day comparison
+ const segColor = (ctx, colorUp, colorDown) => {
+   const p0 = ctx.p0.parsed.y;
+   const p1 = ctx.p1.parsed.y;
+   if (p0 == null || p1 == null) return colorUp;
+   return p1 >= p0 ? colorUp : colorDown;
+ };
  const ds=[
-  {label:'Sales',data:s.sal,borderColor:'#067D62',backgroundColor:'rgba(6,125,98,.10)',yAxisID:'y',fill:true},
-  {label:'Spend',data:s.sp,borderColor:'#E47911',backgroundColor:'rgba(228,121,17,.08)',yAxisID:'y'},
-  {label:'ACOS %',data:s.acos,borderColor:'#007185',borderDash:[5,4],yAxisID:'y1',pointStyle:'line'},
+  {label:'Sales',data:s.sal,borderColor:'#067D62',backgroundColor:'rgba(6,125,98,.10)',yAxisID:'y',fill:true,
+   segment:{borderColor:ctx=>segColor(ctx,'#067D62','#B12704')}},
+  {label:'Spend',data:s.sp,borderColor:'#E47911',backgroundColor:'rgba(228,121,17,.08)',yAxisID:'y',
+   segment:{borderColor:ctx=>segColor(ctx,'#E47911','#B12704')}},
+  {label:'ACOS %',data:s.acos,borderColor:'#007185',borderDash:[5,4],yAxisID:'y1',pointStyle:'line',
+   segment:{borderColor:ctx=>segColor(ctx,'#007185','#B12704')}},
  ];
  charts[id]=new Chart(cv,{type:'line',data:{labels:s.labels,datasets:ds.map(d=>({...d,borderWidth:2,pointRadius:0,pointHitRadius:8,tension:.35,spanGaps:true}))},
  options:{responsive:true,maintainAspectRatio:false,animation:{duration:250},interaction:{mode:'index',intersect:false},