[CLAUDE] FE-User: redesign foundation "nâng màu giữ brand" — gradient/accent/badge bắt mắt hơn

Anh: giao diện đơn điệu, muốn đẹp + bắt mắt, font/màu đẹp hơn. Hướng anh chốt
"nâng màu, giữ nền xanh brand" (eoffice trước). Foundation lan tỏa toàn app, KHÔNG
đụng 65 trang lẻ.
- index.css: +accent palette teal/amberx/violet/greenx (đặt tên né trùng Tailwind)
  + utilities .app-gradient-brand / .card-accent / .icon-chip / .stat-value;
  heading 600->700 đậm hơn; .label-eyebrow brand-600. Brand #1F7DC1 + Be Vietnam Pro GIỮ.
- primitives: Button primary/danger gradient nổi bật; Input/Select/Textarea focus-glow
  mạnh hơn; Label brand-600; Dialog title-bar gradient. variant/size keys STABLE.
- shell: Layout stripe dày hơn + logo cap; PageHeader title lớn/đậm + accent bar cao;
  TopBar gradient hairline; DataTable thead gradient brand chữ trắng.
- Dashboard: KPI cards accent + icon chips.
- color maps (contract/PE phase + PE display status): -700->-800 đậm chữ, phase nháp tint brand.

Visual-only — props/handler/signature nguyên. Build PASS (tsc -b 0 error). a11y:
contrast AA + prefers-reduced-motion. fe-admin mirror đợt sau.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

fe-user/src/components/TopBar.tsx

@@ -68,12 +68,15 @@ function UserMenu() {
 
 export function TopBar({ title }: { title?: string }) {
   return (
-    <header className="flex h-14 items-center justify-between border-b border-slate-200 bg-white px-6">
-      <div className="text-sm font-semibold text-slate-700">{title}</div>
+    // 2026-06-16: thin brand gradient hairline under the bar (border-b-2 với
+    // border-image) + bolder title — đậm nhận diện nhẹ. Signature unchanged.
+    <header className="relative flex h-14 items-center justify-between border-b border-slate-200 bg-white px-6">
+      <div className="text-sm font-bold text-slate-800">{title}</div>
       <div className="flex items-center gap-2">
         <NotificationBell />
         <UserMenu />
       </div>
+      <span aria-hidden className="absolute inset-x-0 bottom-0 h-px bg-gradient-to-r from-brand-500/60 via-brand-300/30 to-transparent" />
     </header>
   )
 }