diff --git a/components/Arena.tsx b/components/Arena.tsx
index 1ab7920..469ecfb 100644
--- a/components/Arena.tsx
+++ b/components/Arena.tsx
@@ -282,7 +282,7 @@ export default function Arena({
             value={email}
             onChange={(e) => setEmail(e.target.value)}
             placeholder={t.emailPh}
-            className="w-full rounded-xl border border-[var(--line-d)] bg-[#0f1217] px-4 py-3.5 text-[16px] text-white outline-none focus:border-[var(--green)]"
+            className="w-full rounded-xl border border-[var(--share)] bg-[#0f1217] px-4 py-3.5 text-[16px] text-white shadow-[0_0_0_2px_rgba(166,94,255,0.12)] outline-none focus:shadow-[0_0_0_2px_rgba(166,94,255,0.3)]"
           />
           <label className="mt-2.5 flex items-start gap-2 text-[13px] leading-snug text-[var(--ink-muted)]">
             <input