[CLAUDE] FE: content polish — typography + PageHeader + Button/Input/Table

Typography base (both apps):
- 14px base, line-height 1.55, letter-spacing -0.003em — Be Vietnam
  Pro render chắc hơn, dấu tiếng Việt rõ hơn
- h1/h2 tracking tighter (-0.018em), h1 weight 700, h2 weight 600
- Tabular numbers trong <table> (tự động align cột số)

PageHeader:
- Title text-[22px] thay vì text-xl — hierarchy mạnh hơn
- Border-bottom + pb-5 thay flat layout — content-area rõ vùng
- Description leading-relaxed + slate-500 — dễ đọc hơn

Button:
- shadow-sm + color-tinted shadow (brand/20, red/20) cho primary/
  danger — có chiều sâu
- active:translate-y-[0.5px] micro-press feedback
- Ring offset 2 (thay 1) + offset-white — focus ring tách rõ

Input/Select/Textarea:
- h-9 thay h-10 — phù hợp dense table layouts
- shadow-[inset_0_1px_0_...] — inset highlight tinh tế
- Focus: border-brand-500 + ring-brand-500/20 — 2 lớp chỉ báo
- Disabled: bg-slate-50 + opacity-70 — rõ disabled state

DataTable:
- rounded-xl + shadow-sm + border-200/80 — card feel nhẹ nhàng hơn
- Header: UPPERCASE text-[11px] tracking-wider — ERP enterprise look
- Row hover: bg-brand-50/40 (thay slate-50) — brand-tinted hover
- Padding tăng từ px-3 py-2 → px-4 py-2.5 — breathing room

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

fe-user/src/components/DataTable.tsx

@@ -35,15 +35,15 @@ export function DataTable<T>({
   onRowClick,
 }: Props<T>) {
   return (
-    <div className="overflow-auto rounded-md border border-slate-200 bg-white">
+    <div className="overflow-auto rounded-xl border border-slate-200/80 bg-white shadow-sm">
       <table className="w-full text-sm">
-        <thead className="bg-slate-50 text-slate-700">
-          <tr>
+        <thead className="bg-slate-50/60 text-slate-600">
+          <tr className="border-b border-slate-200/80">
             {columns.map(c => (
               <th
                 key={c.key}
                 className={cn(
-                  'px-3 py-2 font-medium',
+                  'px-4 py-2.5 text-[11px] font-semibold uppercase tracking-wider',
                   c.align === 'right' && 'text-right',
                   c.align === 'center' && 'text-center',
                   c.align !== 'right' && c.align !== 'center' && 'text-left',
@@ -70,7 +70,7 @@ export function DataTable<T>({
             Array.from({ length: 5 }).map((_, i) => (
               <tr key={`sk-${i}`} className="border-t border-slate-100">
                 {columns.map(c => (
-                  <td key={c.key} className="px-3 py-3">
+                  <td key={c.key} className="px-4 py-3">
                     <div className="h-3 animate-pulse rounded bg-slate-100" />
                   </td>
                 ))}
@@ -78,7 +78,7 @@ export function DataTable<T>({
             ))}
           {!isLoading && rows.length === 0 && (
             <tr>
-              <td colSpan={columns.length} className="px-3 py-10 text-center text-sm text-slate-400">
+              <td colSpan={columns.length} className="px-4 py-12 text-center text-sm text-slate-400">
                 {empty ?? 'Không có dữ liệu'}
               </td>
             </tr>
@@ -88,8 +88,8 @@ export function DataTable<T>({
               <tr
                 key={getRowKey(row)}
                 className={cn(
-                  'border-t border-slate-100 transition',
-                  onRowClick && 'cursor-pointer hover:bg-slate-50',
+                  'border-t border-slate-100 text-slate-700 transition-colors',
+                  onRowClick && 'cursor-pointer hover:bg-brand-50/40',
                 )}
                 onClick={() => onRowClick?.(row)}
               >
@@ -97,7 +97,7 @@ export function DataTable<T>({
                   <td
                     key={c.key}
                     className={cn(
-                      'px-3 py-2',
+                      'px-4 py-2.5',
                       c.align === 'right' && 'text-right',
                       c.align === 'center' && 'text-center',
                     )}