Add dark mode support and theme provider

src/App.tsx

@@ -12,7 +12,7 @@ import { NuevoIngreso } from '@/sections/NuevoIngreso';
 import { EditIngreso } from '@/sections/EditIngreso';
 import { Spinner } from '@/components/ui/spinner';
 import { Button } from '@/components/ui/button';
-import { ThemeProvider } from '@/contexts/ThemeContext';
+import { ThemeProvider } from "@/components/theme-provider";
 import { Toaster } from '@/components/ui/sonner';
 
 function AppContent() {
@@ -185,7 +185,7 @@ function AppContent() {
             getAreaName={(areaId) => store.areas.find(a => a.id === areaId)?.nombre || ''}
           />
         );
-      
+
       case 'editaringreso': {
         const internacion = store.getInternacionById(store.currentInternacionId || '');
         const paciente = internacion ? store.getPacienteById(internacion.pacienteId) : undefined;
@@ -225,8 +225,7 @@ function AppContent() {
 
 function App() {
   return (
-    // @ts-expect-error - next-themes types mismatch
+    <ThemeProvider defaultTheme="dark" storageKey="vite-ui-theme">
-    <ThemeProvider attribute="class" defaultTheme="system" enableSystem>
       <AppContent />
       <Toaster position="top-right" />
     </ThemeProvider>

src/components/theme-provider.tsx

@@ -0,0 +1,73 @@
+import { createContext, useContext, useEffect, useState } from "react"
+
+type Theme = "dark" | "light" | "system"
+
+type ThemeProviderProps = {
+    children: React.ReactNode
+    defaultTheme?: Theme
+    storageKey?: string
+}
+
+type ThemeProviderState = {
+    theme: Theme
+    setTheme: (theme: Theme) => void
+}
+
+const initialState: ThemeProviderState = {
+    theme: "system",
+    setTheme: () => null,
+}
+
+const ThemeProviderContext = createContext<ThemeProviderState>(initialState)
+
+export function ThemeProvider({
+    children,
+    defaultTheme = "light",
+    storageKey = "vite-ui-theme",
+    ...props
+}: ThemeProviderProps) {
+    const [theme, setTheme] = useState<Theme>(
+        () => (localStorage.getItem(storageKey) as Theme) || defaultTheme
+    )
+
+    useEffect(() => {
+        const root = window.document.documentElement
+
+        root.classList.remove("light", "dark")
+
+        if (theme === "system") {
+            const systemTheme = window.matchMedia("(prefers-color-scheme: dark)")
+                .matches
+                ? "dark"
+                : "light"
+
+            root.classList.add(systemTheme)
+            return
+        }
+
+        root.classList.add(theme)
+    }, [theme])
+
+    const value = {
+        theme,
+        setTheme: (theme: Theme) => {
+            localStorage.setItem(storageKey, theme)
+            setTheme(theme)
+        },
+    }
+
+    return (
+        <ThemeProviderContext.Provider {...props} value={value}>
+            {children}
+        </ThemeProviderContext.Provider>
+    )
+}
+
+export const useTheme = () => {
+    const context = useContext(ThemeProviderContext)
+
+    if (context === undefined)
+        throw new Error("useTheme must be used within a ThemeProvider")
+
+    return context
+}

src/contexts/ThemeContext.tsx

@@ -1,19 +0,0 @@
-import { ThemeProvider as NextThemesProvider, useTheme as useNextTheme } from 'next-themes';
-import type { ReactNode } from 'react';
-
-export function ThemeProvider({ children }: { children: ReactNode }) {
-  return (
-    <NextThemesProvider attribute="class" defaultTheme="system" enableSystem>
-      {children}
-    </NextThemesProvider>
-  );
-}
-
-export function useTheme() {
-  const { theme, setTheme } = useNextTheme();
-  const isDarkMode = theme === 'dark';
-  const toggleDarkMode = () => setTheme(theme === 'dark' ? 'light' : 'dark');
-  return { isDarkMode, toggleDarkMode, theme, setTheme };
-}
-
-export { NextThemesProvider };

src/sections/HistoriaClinica.tsx

@@ -266,8 +266,8 @@ export function HistoriaClinica({
       <Card>
         <CardContent className="p-4">
           <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-4">
-            <div><h2 className="font-bold text-lg text-gray-900 flex items-center gap-2">
+            <div><h2 className="text-2xl font-bold text-gray-900 dark:text-white flex items-center gap-2">
-              <User className="h-4 w-4" />
+              <User className="h-6 w-6 text-blue-600" />
               {paciente.apellido}, {paciente.nombre}
             </h2>
             </div>
@@ -284,7 +284,7 @@ export function HistoriaClinica({
                 {paciente.fechaNacimiento ? calcularEdad(paciente.fechaNacimiento) + ' años' : ''}
               </Badge>
 
-              <Badge variant="outline" className="text-sm px-3 py-1 bg-blue-50 text-blue-700 border-blue-200">
+              <Badge variant="outline" className="text-sm px-3 py-1 bg-blue-50 text-blue-700 border-blue-200 dark:bg-blue-950 dark:text-blue-300">
                 DNI: {paciente.dni}
               </Badge>
 
@@ -1364,7 +1364,7 @@ function SeccionEvoluciones({ evos, internacionId, add, update, del }: {
               <div><Label>Fecha *</Label><Input type="date" value={fecha} onChange={e => setFecha(e.target.value)} /></div>
               <div><Label>Hora *</Label><Input type="time" value={hora} onChange={e => setHora(e.target.value)} /></div>
             </div>
-            <div className="bg-blue-50 p-3 rounded-lg border border-blue-200">
+            <div className="bg-blue-50 dark:bg-blue-950/50 p-3 rounded-lg border border-blue-200 dark:border-blue-700">
               <p className="text-sm font-bold text-blue-800 mb-3 flex items-center gap-2"><Activity className="h-4 w-4" />Signos Vitales</p>
               <div className="grid grid-cols-2 sm:grid-cols-3 gap-4">
                 <div><Label className="flex items-center gap-1"><Heart className="h-4 w-4" />TAS</Label><Input type="number" value={presionSistolica} onChange={e => setPresionSistolica(e.target.value)} placeholder="120" /></div>
@@ -1387,9 +1387,9 @@ function SeccionEvoluciones({ evos, internacionId, add, update, del }: {
                 <div><Label>SOMA</Label><Input value={soma} onChange={e => setSoma(e.target.value)} placeholder="Estado SOMA" /></div>
               </div>
             </div>
-            <div><Label>Novedades</Label><textarea className="w-full p-2 border rounded-md text-sm min-h-[80px]" value={novedades} onChange={e => setNovedades(e.target.value)} placeholder="Novedades..." /></div>
+            <div><Label>Novedades</Label><textarea value={novedades} onChange={e => setNovedades(e.target.value)} placeholder="Novedades..." /></div>
-            <div><Label>Comentario</Label><textarea className="w-full p-2 border rounded-md text-sm min-h-[80px]" value={comentario} onChange={e => setComentario(e.target.value)} placeholder="Comentarios adicionales..." /></div>
+            <div><Label>Comentario</Label><textarea value={comentario} onChange={e => setComentario(e.target.value)} placeholder="Comentarios adicionales..." /></div>
-            <div><Label>Pendientes</Label><textarea className="w-full p-2 border rounded-md text-sm min-h-[80px]" value={pendientes} onChange={e => setPendientes(e.target.value)} placeholder="Pendientes..." /></div>
+            <div><Label>Pendientes</Label><textarea value={pendientes} onChange={e => setPendientes(e.target.value)} placeholder="Pendientes..." /></div>
             <div><Label>Médico *</Label><Input value={medico} onChange={e => setMedico(e.target.value)} placeholder="Nombre del médico" /></div>
           </div>
           <div className="flex justify-end gap-2 mt-4"><Button variant="outline" onClick={() => { reset(); setDialog(false); }}><X className="h-4 w-4 mr-2" />Cancelar</Button><Button onClick={handle} disabled={!medico}><Save className="h-4 w-4 mr-2" />Guardar Evolución</Button></div>

src/sections/Layout.tsx

@@ -1,11 +1,11 @@
-import { 
+import {
-  LayoutDashboard, 
+  LayoutDashboard,
-  Bed, 
+  Bed,
-  Users, 
+  Users,
-  ClipboardList, 
+  ClipboardList,
-  FileText, 
+  FileText,
-  FlaskConical, 
+
-  Activity, 
+  Activity,
   Microscope,
   Menu,
   Sun,
@@ -13,9 +13,17 @@ import {
 } from 'lucide-react';
 import { Button } from '@/components/ui/button';
 import { Sheet, SheetContent, SheetTrigger } from '@/components/ui/sheet';
-import { useTheme } from '@/contexts/ThemeContext';
+
 import type { Vista } from '@/types';
 
+import {
+  DropdownMenu,
+  DropdownMenuContent,
+  DropdownMenuItem,
+  DropdownMenuTrigger,
+} from "@/components/ui/dropdown-menu"
+import { useTheme } from "@/components/theme-provider"
+
 interface LayoutProps {
   children: React.ReactNode;
   vistaActual: Vista;
@@ -34,7 +42,9 @@ const menuItems: { vista: Vista; label: string; icon: React.ElementType }[] = [
 ];
 
 export function Layout({ children, vistaActual, onCambiarVista }: LayoutProps) {
-  const { isDarkMode, toggleDarkMode } = useTheme();
+  const { theme, setTheme } = useTheme()
+
+  const toggleDarkMode = () => setTheme(theme === "dark" ? "light" : "dark")
 
   const NavContent = () => (
     <nav className="flex flex-col gap-2">
@@ -76,15 +86,26 @@ export function Layout({ children, vistaActual, onCambiarVista }: LayoutProps) {
         </div>
         <div className="p-4 border-t border-gray-200 dark:border-gray-700">
           <div className="flex items-center justify-center gap-2">
-            <Button
+            <DropdownMenu>
-              variant="ghost"
+              <DropdownMenuTrigger asChild>
-              size="sm"
+                <Button variant="outline" size="icon">
-              onClick={toggleDarkMode}
+                  <Sun className="h-[1.2rem] w-[1.2rem] rotate-0 scale-100 transition-all dark:-rotate-90 dark:scale-0" />
-              className="flex items-center gap-2"
+                  <Moon className="absolute h-[1.2rem] w-[1.2rem] rotate-90 scale-0 transition-all dark:rotate-0 dark:scale-100" />
-            >
+                  <span className="sr-only">Toggle theme</span>
-              {isDarkMode ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
+                </Button>
-              <span className="text-xs">{isDarkMode ? 'Modo Claro' : 'Modo Oscuro'}</span>
+              </DropdownMenuTrigger>
-            </Button>
+              <DropdownMenuContent align="end">
+                <DropdownMenuItem onClick={() => setTheme("light")}>
+                  Light
+                </DropdownMenuItem>
+                <DropdownMenuItem onClick={() => setTheme("dark")}>
+                  Dark
+                </DropdownMenuItem>
+                <DropdownMenuItem onClick={() => setTheme("system")}>
+                  System
+                </DropdownMenuItem>
+              </DropdownMenuContent>
+            </DropdownMenu>
           </div>
           <div className="text-xs text-gray-400 dark:text-gray-500 text-center mt-2">
             v2.0
@@ -122,8 +143,8 @@ export function Layout({ children, vistaActual, onCambiarVista }: LayoutProps) {
                 onClick={toggleDarkMode}
                 className="w-full flex items-center justify-center gap-2 dark:text-white"
               >
-                {isDarkMode ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
+                {theme === "dark" ? <Sun className="h-4 w-4" /> : <Moon className="h-4 w-4" />}
-                <span className="text-sm">{isDarkMode ? 'Modo Claro' : 'Modo Oscuro'}</span>
+                <span className="text-sm">{theme === "dark" ? 'Modo Claro' : 'Modo Oscuro'}</span>
               </Button>
             </div>
           </SheetContent>