feat: refactor TopLoader to use a hook for active state management and improve CSS for fixed positioning

distribution_fe/app/(dashboard)/layout.tsx

@@ -2,6 +2,7 @@ import { SidebarInset, SidebarProvider, SidebarTrigger } from '@/components/ui/s
 import { AppSidebar } from '@/components/layout/app-sidebar'
 import { BottomNav } from '@/components/layout/bottom-nav'
 import { ThemeToggle } from '@/components/layout/theme-toggle'
+import { TopLoader } from '@/components/shared/top-loader'
 
 export default function DashboardLayout({
   children,
@@ -10,6 +11,7 @@ export default function DashboardLayout({
 }) {
   return (
     <SidebarProvider>
+      <TopLoader />
       <AppSidebar />
       <SidebarInset>
         <header className="flex h-14 shrink-0 items-center gap-2 border-b border-border px-4">

distribution_fe/app/(dashboard)/suppliers/[id]/payments/_components/supplier-payments-client.tsx

@@ -30,7 +30,7 @@ import { Input } from '@/components/ui/input'
 import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select'
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from '@/components/ui/table'
 import { toast } from '@/components/ui/toast'
-import { TopLoader } from '@/components/shared/top-loader'
+import { useTopLoader } from '@/components/shared/top-loader'
 import { EmptyState } from '@/components/shared/empty-state'
 import { ReceiptDollarIcon } from '@hugeicons/core-free-icons'
 
@@ -70,11 +70,12 @@ export function SupplierPaymentsClient({ supplierId }: { supplierId: string }) {
 
   useEffect(() => { loadPayments() }, [loadPayments])
 
+  useTopLoader(loading)
+
   const pageCount = Math.max(1, Math.ceil(total / pageSize))
 
   return (
-    <div className="relative">
-      <TopLoader active={loading} />
+    <div>
       <div className="flex items-center justify-between">
         <div>
           <h1 className="text-2xl font-semibold text-foreground">Supplier Payments</h1>

distribution_fe/app/globals.css

@@ -135,42 +135,44 @@
   border-bottom-color: var(--muted-foreground);
 }
 
-/* Top loading strip: thin bar sliding across with a neon-red leading dot. */
+/* Top loading strip: fixed-at-top-of-viewport bar sliding across with a
+   neon-red leading dot. Fixed positioning so no scroll container can clip it. */
 .top-loader {
   pointer-events: none;
-  position: absolute;
+  position: fixed;
   left: 0;
   right: 0;
   top: 0;
   height: 2px;
   overflow: visible;
-  z-index: 50;
+  z-index: 100;
 }
 .top-loader__bar {
   position: absolute;
   inset: 0;
   background: linear-gradient(
     90deg,
-    transparent 0%,
-    rgba(255, 60, 90, 0.35) 55%,
-    rgba(255, 90, 120, 0.9) 90%,
+    rgba(255, 46, 99, 0.0) 0%,
+    rgba(255, 46, 99, 0.85) 40%,
+    rgba(255, 90, 120, 1) 80%,
     #ff2e63 100%
   );
   transform: translateX(-100%);
-  animation: top-loader-slide 1.2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
+  animation: top-loader-slide 1.1s cubic-bezier(0.4, 0, 0.2, 1) infinite;
+  box-shadow: 0 0 8px rgba(255, 46, 99, 0.45);
 }
 .top-loader__head {
   position: absolute;
-  right: -4px;
+  right: -2px;
   top: -2px;
   height: 6px;
   width: 10px;
   border-radius: 9999px;
-  background: #ff6b8a;
+  background: #ffd1dc;
   box-shadow:
     0 0 6px 1px #ff2e63,
-    0 0 14px 2px rgba(255, 46, 99, 0.75),
-    0 0 24px 4px rgba(255, 46, 99, 0.35);
+    0 0 14px 3px rgba(255, 46, 99, 0.85),
+    0 0 28px 6px rgba(255, 46, 99, 0.45);
 }
 @keyframes top-loader-slide {
   0%   { transform: translateX(-100%); }

distribution_fe/components/shared/top-loader.tsx

@@ -1,26 +1,44 @@
 'use client'
 
-import { useEffect, useState } from 'react'
+import { useEffect, useState, useSyncExternalStore } from 'react'
 
-/**
- * Thin top strip shown while `active` is true. Stays visible for at least
- * `minDurationMs` so quick fetches don't produce an invisible flicker.
- */
-export function TopLoader({ active, minDurationMs = 350 }: { active: boolean; minDurationMs?: number }) {
-  const [visible, setVisible] = useState(active)
+// Global ref-count store. Any page can call useTopLoader(active) and the
+// shared <TopLoader /> (mounted once in the dashboard layout) will reflect it.
+
+let activeCount = 0
+const listeners = new Set<() => void>()
+function emit() { listeners.forEach(l => l()) }
+function subscribe(cb: () => void) { listeners.add(cb); return () => { listeners.delete(cb) } }
+function getSnapshot() { return activeCount }
+
+export function useTopLoader(active: boolean) {
+  useEffect(() => {
+    if (!active) return
+    activeCount += 1
+    emit()
+    return () => {
+      activeCount = Math.max(0, activeCount - 1)
+      emit()
+    }
+  }, [active])
+}
+
+// Short tail so a sub-100ms fetch still shows the strip briefly.
+const TAIL_MS = 350
+
+export function TopLoader() {
+  const count = useSyncExternalStore(subscribe, getSnapshot, () => 0)
+  const [tailing, setTailing] = useState(false)
 
   useEffect(() => {
-    if (active) {
-      setVisible(true)
-      return
-    }
-    const t = setTimeout(() => setVisible(false), minDurationMs)
+    if (count > 0) { setTailing(true); return }
+    const t = setTimeout(() => setTailing(false), TAIL_MS)
     return () => clearTimeout(t)
-  }, [active, minDurationMs])
+  }, [count])
 
-  if (!visible) return null
+  if (count === 0 && !tailing) return null
   return (
-    <div className="top-loader">
+    <div className="top-loader" aria-hidden="true">
       <div className="top-loader__bar">
         <span className="top-loader__head" />
       </div>