diff --git a/src/components/layout/ModernLayout.tsx b/src/components/layout/ModernLayout.tsx
index 5281493..ee17243 100644
--- a/src/components/layout/ModernLayout.tsx
+++ b/src/components/layout/ModernLayout.tsx
@@ -1,8 +1,9 @@
 
 import React, { useState } from 'react';
-import { Link } from 'react-router-dom';
+import { Link, useLocation } from 'react-router-dom';
 import { useIsMobile } from '@/hooks/use-mobile';
-import { ModernSidebar, SidebarBody, SidebarLink } from '@/components/ui/modern-sidebar';
+import { ModernSidebar, SidebarBody } from '@/components/ui/modern-sidebar';
+import { VerticalLimelightNav } from '@/components/ui/limelight-nav';
 import OnboardingTour from '@/components/onboarding/OnboardingTour';
 import HelpIcon from '@/components/help/HelpIcon';
 import { useOnboardingTour } from '@/hooks/useOnboardingTour';
@@ -63,6 +64,7 @@ const LogoIcon = () => {
 
 export default function ModernLayout({ children }: ModernLayoutProps) {
   const [open, setOpen] = useState(false);
+  const location = useLocation();
   const isMobile = useIsMobile();
   
   const {
@@ -73,65 +75,82 @@ export default function ModernLayout({ children }: ModernLayoutProps) {
     closeTour
   } = useOnboardingTour();
 
-  const links = [
+  const mainLinks = [
     {
+      id: "dashboard",
       label: "Dashboard",
       href: "/",
-      icon: <Home className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Home />,
     },
     {
+      id: "transacoes",
       label: "Transações",
       href: "/transacoes",
-      icon: <Receipt className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Receipt />,
     },
     {
+      id: "cartoes",
       label: "Cartões de Crédito",
       href: "/cartoes",
-      icon: <CreditCard className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <CreditCard />,
     },
     {
+      id: "categorias",
       label: "Categorias",
       href: "/categorias",
-      icon: <ListFilter className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <ListFilter />,
     },
     {
+      id: "metas",
       label: "Metas",
       href: "/metas",
-      icon: <Target className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Target />,
     },
     {
+      id: "calendario",
       label: "Calendário",
       href: "/calendario",
-      icon: <Calendar className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Calendar />,
     },
     {
+      id: "assinatura",
       label: "Assinatura",
       href: "/assinatura",
-      icon: <Crown className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Crown />,
     }
   ];
 
   const whatsappLinks = [
     {
+      id: "whatsapp",
       label: "Conectar WhatsApp",
       href: "/whatsapp",
-      icon: <MessageSquareText className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" data-tour="whatsapp-menu" />,
+      icon: <MessageSquareText data-tour="whatsapp-menu" />,
     },
     {
+      id: "grupos",
       label: "Grupos",
       href: "/grupos-whatsapp",
-      icon: <Users className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" data-tour="grupos-menu" />,
+      icon: <Users data-tour="grupos-menu" />,
     }
   ];
 
   const configLinks = [
     {
+      id: "configuracoes",
       label: "Configurações",
       href: "/configuracoes",
-      icon: <Settings className="h-5 w-5 shrink-0 text-neutral-700 dark:text-neutral-200" />,
+      icon: <Settings />,
     }
   ];
 
+  // Determine active index based on current route
+  const getActiveIndex = () => {
+    const allLinks = [...mainLinks, ...whatsappLinks, ...configLinks];
+    const activeIndex = allLinks.findIndex(link => link.href === location.pathname);
+    return activeIndex >= 0 ? activeIndex : 0;
+  };
+
   return (
     <div className="min-h-screen bg-background flex w-full">
       <ModernSidebar open={open} setOpen={setOpen}>
@@ -139,43 +158,53 @@ export default function ModernLayout({ children }: ModernLayoutProps) {
           <div className="flex flex-1 flex-col overflow-x-hidden overflow-y-auto h-full">
             {open ? <Logo /> : <LogoIcon />}
             
-            <div className="mt-8 flex flex-col gap-2">
-              {links.map((link, idx) => (
-                <SidebarLink key={idx} link={link} />
-              ))}
-            </div>
-
-            <div className="mt-8">
-              {open && (
-                <motion.h2 
-                  initial={{ opacity: 0 }}
-                  animate={{ opacity: 1 }}
-                  className="mb-2 px-2 text-sm font-semibold tracking-tight text-gray-600"
-                >
-                  WhatsApp
-                </motion.h2>
-              )}
-              <div className="flex flex-col gap-2">
-                {whatsappLinks.map((link, idx) => (
-                  <SidebarLink key={`whatsapp-${idx}`} link={link} />
-                ))}
+            <div className="mt-8 flex flex-col gap-6 flex-1 pb-4">
+              {/* Main Navigation */}
+              <div>
+                <VerticalLimelightNav
+                  items={mainLinks}
+                  defaultActiveIndex={getActiveIndex() < mainLinks.length ? getActiveIndex() : 0}
+                  showLabels={open}
+                  className="space-y-1"
+                />
               </div>
-            </div>
 
-            <div className="mt-auto">
-              {open && (
-                <motion.h2 
-                  initial={{ opacity: 0 }}
-                  animate={{ opacity: 1 }}
-                  className="mb-2 px-2 text-sm font-semibold tracking-tight text-gray-600"
-                >
-                  Configurações
-                </motion.h2>
-              )}
-              <div className="flex flex-col gap-2 pb-4">
-                {configLinks.map((link, idx) => (
-                  <SidebarLink key={`config-${idx}`} link={link} />
-                ))}
+              {/* WhatsApp Section */}
+              <div className="flex-1">
+                {open && (
+                  <motion.h2 
+                    initial={{ opacity: 0 }}
+                    animate={{ opacity: 1 }}
+                    className="mb-3 px-3 text-xs font-semibold tracking-tight text-gray-500 uppercase"
+                  >
+                    WhatsApp
+                  </motion.h2>
+                )}
+                <VerticalLimelightNav
+                  items={whatsappLinks}
+                  defaultActiveIndex={getActiveIndex() >= mainLinks.length && getActiveIndex() < mainLinks.length + whatsappLinks.length ? getActiveIndex() - mainLinks.length : -1}
+                  showLabels={open}
+                  className="space-y-1"
+                />
+              </div>
+
+              {/* Config Section */}
+              <div className="mt-auto">
+                {open && (
+                  <motion.h2 
+                    initial={{ opacity: 0 }}
+                    animate={{ opacity: 1 }}
+                    className="mb-3 px-3 text-xs font-semibold tracking-tight text-gray-500 uppercase"
+                  >
+                    Configurações
+                  </motion.h2>
+                )}
+                <VerticalLimelightNav
+                  items={configLinks}
+                  defaultActiveIndex={getActiveIndex() >= mainLinks.length + whatsappLinks.length ? getActiveIndex() - mainLinks.length - whatsappLinks.length : -1}
+                  showLabels={open}
+                  className="space-y-1"
+                />
               </div>
             </div>
           </div>
diff --git a/src/components/ui/limelight-nav.tsx b/src/components/ui/limelight-nav.tsx
new file mode 100644
index 0000000..b7c8dcd
--- /dev/null
+++ b/src/components/ui/limelight-nav.tsx
@@ -0,0 +1,145 @@
+
+import React, { useState, useRef, useLayoutEffect, cloneElement } from 'react';
+
+// --- Internal Types and Defaults ---
+
+const DefaultHomeIcon = (props: React.SVGProps<SVGSVGElement>) => <svg {...props} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z" /></svg>;
+const DefaultCompassIcon = (props: React.SVGProps<SVGSVGElement>) => <svg {...props} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><circle cx="12" cy="12" r="10" /><path d="m16.24 7.76-2.12 6.36-6.36 2.12 2.12-6.36 6.36-2.12z" /></svg>;
+const DefaultBellIcon = (props: React.SVGProps<SVGSVGElement>) => <svg {...props} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M6 8a6 6 0 0 1 12 0c0 7 3 9 3 9H3s3-2 3-9" /><path d="M10.3 21a1.94 1.94 0 0 0 3.4 0" /></svg>;
+
+export type NavItem = {
+  id: string | number;
+  icon: React.ReactElement;
+  label?: string;
+  onClick?: () => void;
+  href?: string;
+};
+
+const defaultNavItems: NavItem[] = [
+  { id: 'default-home', icon: <DefaultHomeIcon />, label: 'Home' },
+  { id: 'default-explore', icon: <DefaultCompassIcon />, label: 'Explore' },
+  { id: 'default-notifications', icon: <DefaultBellIcon />, label: 'Notifications' },
+];
+
+type VerticalLimelightNavProps = {
+  items?: NavItem[];
+  defaultActiveIndex?: number;
+  onTabChange?: (index: number) => void;
+  className?: string;
+  limelightClassName?: string;
+  iconContainerClassName?: string;
+  iconClassName?: string;
+  showLabels?: boolean;
+};
+
+/**
+ * A vertical navigation bar with a "limelight" effect that highlights the active item.
+ */
+export const VerticalLimelightNav = ({
+  items = defaultNavItems,
+  defaultActiveIndex = 0,
+  onTabChange,
+  className,
+  limelightClassName,
+  iconContainerClassName,
+  iconClassName,
+  showLabels = true,
+}: VerticalLimelightNavProps) => {
+  const [activeIndex, setActiveIndex] = useState(defaultActiveIndex);
+  const [isReady, setIsReady] = useState(false);
+  const navItemRefs = useRef<(HTMLAnchorElement | null)[]>([]);
+  const limelightRef = useRef<HTMLDivElement | null>(null);
+
+  useLayoutEffect(() => {
+    if (items.length === 0) return;
+
+    const limelight = limelightRef.current;
+    const activeItem = navItemRefs.current[activeIndex];
+    
+    if (limelight && activeItem) {
+      const newTop = activeItem.offsetTop + activeItem.offsetHeight / 2 - limelight.offsetHeight / 2;
+      limelight.style.top = `${newTop}px`;
+
+      if (!isReady) {
+        setTimeout(() => setIsReady(true), 50);
+      }
+    }
+  }, [activeIndex, isReady, items]);
+
+  if (items.length === 0) {
+    return null; 
+  }
+
+  const handleItemClick = (index: number, item: NavItem) => {
+    setActiveIndex(index);
+    onTabChange?.(index);
+    item.onClick?.();
+  };
+
+  return (
+    <nav className={`relative flex flex-col gap-1 py-2 ${className}`}>
+      {items.map((item, index) => {
+        const { id, icon, label, href } = item;
+        const isActive = activeIndex === index;
+        
+        const content = (
+          <>
+            {cloneElement(icon, {
+              className: `w-5 h-5 shrink-0 transition-all duration-200 ${
+                isActive ? 'text-blue-700' : 'text-neutral-700 dark:text-neutral-200'
+              } ${icon.props.className || ''} ${iconClassName || ''}`,
+            })}
+            {showLabels && label && (
+              <span className={`text-sm font-medium transition-all duration-200 whitespace-nowrap ${
+                isActive ? 'text-blue-700' : 'text-neutral-700 dark:text-neutral-200'
+              }`}>
+                {label}
+              </span>
+            )}
+          </>
+        );
+
+        const baseClasses = `relative z-20 flex items-center gap-3 px-3 py-3 rounded-lg cursor-pointer transition-all duration-200 hover:bg-gradient-to-r hover:from-blue-50 hover:to-indigo-50 hover:text-blue-700 ${iconContainerClassName}`;
+
+        if (href) {
+          return (
+            <a
+              key={id}
+              ref={el => (navItemRefs.current[index] = el)}
+              href={href}
+              className={baseClasses}
+              onClick={() => handleItemClick(index, item)}
+              aria-label={label}
+            >
+              {content}
+            </a>
+          );
+        }
+
+        return (
+          <div
+            key={id}
+            ref={el => (navItemRefs.current[index] = el)}
+            className={baseClasses}
+            onClick={() => handleItemClick(index, item)}
+            aria-label={label}
+          >
+            {content}
+          </div>
+        );
+      })}
+
+      <div 
+        ref={limelightRef}
+        className={`absolute left-0 z-10 w-1 h-8 rounded-full bg-blue-600 shadow-[5px_0_15px_rgba(29,78,216,0.3)] ${
+          isReady ? 'transition-[top] duration-400 ease-in-out' : ''
+        } ${limelightClassName}`}
+        style={{ top: '-999px' }}
+      >
+        <div className="absolute left-[4px] top-[-30%] w-12 h-[160%] [clip-path:polygon(0_5%,100%_25%,100%_75%,0_95%)] bg-gradient-to-r from-blue-600/20 to-transparent pointer-events-none" />
+      </div>
+    </nav>
+  );
+};
+
+export { VerticalLimelightNav as LimelightNav };