Add header credits display with reload functionality

Introduced a dynamic credits system displaying available credits in the header and allowing users to reload them via prompt-based input. Updated `Header.js` to include the credits badge and reload button. Adjusted `App.js` to manage credits state with localStorage synchronization. Enhanced styles for new header elements.

src/App.js

@@ -1,4 +1,4 @@
-import React, { useState } from 'react';
+import React, { useEffect, useState } from 'react';
 import './styles/globals.css';
 import { Sidebar, Header } from './components/Layout';
 import { DashboardCards } from './components/Dashboard';
@@ -11,7 +11,27 @@ import SettingsPage from './components/Settings/SettingsPage';
 
 function App() {
   const [isMobileMenuOpen, setIsMobileMenuOpen] = useState(false);
-  const [activeView, setActiveView] = useState('dashboard'); // 'dashboard' | 'scheduled' | 'create'
+  const [activeView, setActiveView] = useState('dashboard'); // 'dashboard' | 'scheduled' | 'create' | 'history' | 'settings'
+  const [credits, setCredits] = useState(() => {
+    try {
+      const raw = localStorage.getItem('credits');
+      const n = raw != null ? parseInt(raw, 10) : 0;
+      return Number.isNaN(n) ? 0 : n;
+    } catch {
+      return 0;
+    }
+  });
+
+  useEffect(() => {
+    const onStorage = (e) => {
+      if (e.key === 'credits') {
+        const n = parseInt(e.newValue, 10);
+        if (!Number.isNaN(n)) setCredits(n);
+      }
+    };
+    window.addEventListener('storage', onStorage);
+    return () => window.removeEventListener('storage', onStorage);
+  }, []);
 
   const handleToggleMobileMenu = () => setIsMobileMenuOpen(!isMobileMenuOpen);
   const handleNavigate = (key) => {
@@ -19,6 +39,19 @@ function App() {
     setIsMobileMenuOpen(false);
   };
 
+  const handleReloadCredits = () => {
+    const input = window.prompt('¿Cuántos créditos desea recargar?');
+    if (input == null) return;
+    const add = parseInt(input, 10);
+    if (Number.isNaN(add) || add <= 0) {
+      alert('Ingrese un número válido mayor a 0.');
+      return;
+    }
+    const next = credits + add;
+    setCredits(next);
+    try { localStorage.setItem('credits', String(next)); } catch {}
+  };
+
   const headerTitle = activeView === 'scheduled'
     ? 'Solicitudes Programadas'
     : activeView === 'create'
@@ -38,7 +71,7 @@ function App() {
         onNavigate={handleNavigate}
       />
       <main className="main-content">
-        <Header title={headerTitle} />
+        <Header title={headerTitle} credits={credits} onReloadCredits={handleReloadCredits} />
         {activeView === 'scheduled' ? (
           <ScheduledPage />
         ) : activeView === 'create' ? (

src/components/Layout/Header.js

@@ -1,7 +1,7 @@
 import React from 'react';
 import '../../styles/components.css';
 
-const Header = ({ title = 'Dashboard' }) => {
+const Header = ({ title = 'Dashboard', credits = 0, onReloadCredits }) => {
   const handleLogout = () => {
     try {
       localStorage.setItem('auth', 'false');
@@ -23,6 +23,19 @@ const Header = ({ title = 'Dashboard' }) => {
           <i className="fas fa-search"></i>
           <input type="text" placeholder="Buscar solicitudes..." />
         </div>
+        <div className="header-credits">
+          <span className="credits-badge" title="Créditos disponibles">
+            <i className="fas fa-coins"></i>
+            Créditos: {credits}
+          </span>
+          <button
+            className="btn btn-sm btn-outline"
+            onClick={() => onReloadCredits && onReloadCredits()}
+            title="Recargar créditos"
+          >
+            <i className="fas fa-sync-alt"></i> Recargar
+          </button>
+        </div>
         <button className="btn btn-primary">
           <i className="fas fa-plus"></i> Nueva Solicitud
         </button>

src/styles/components.css

@@ -148,11 +148,16 @@
 }
 
 .header {
+  position: sticky;
+  top: 0;
+  z-index: 100;
+  background: white;
   display: flex;
   justify-content: space-between;
   align-items: center;
   margin-bottom: 30px;
   padding: 20px 0;
+  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
 }
 
 .page-title {
@@ -181,6 +186,29 @@
   gap: 16px;
 }
 
+/* Header credits */
+.header-credits {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+}
+
+.credits-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  background: rgba(16, 185, 129, 0.1);
+  color: var(--secondary);
+  border: 1px solid rgba(16, 185, 129, 0.25);
+  padding: 8px 12px;
+  border-radius: 999px;
+  font-weight: 600;
+}
+
+.credits-badge i {
+  color: var(--success);
+}
+
 .search-box {
   position: relative;
   background: white;