diff --git a/frontend/src/Components/DashBoard/LeetCode.jsx b/frontend/src/Components/DashBoard/LeetCode.jsx
index 88911e2..a12b12e 100644
--- a/frontend/src/Components/DashBoard/LeetCode.jsx
+++ b/frontend/src/Components/DashBoard/LeetCode.jsx
@@ -18,7 +18,7 @@ import BackButton from "../ui/backbutton";
 
 ChartJS.register(CategoryScale, LinearScale, PointElement, LineElement, Title, Tooltip, Legend);
 
-export default function LeetCode({ platforms = {} }) {
+export default function LeetCode() {
   const [stats, setStats] = useState(null);
   const { leetUser } = useParams();
 
diff --git a/frontend/src/Components/Dashboard.jsx b/frontend/src/Components/Dashboard.jsx
index 310bf6a..4f32b1c 100644
--- a/frontend/src/Components/Dashboard.jsx
+++ b/frontend/src/Components/Dashboard.jsx
@@ -101,7 +101,6 @@ export default function Dashboard() {
   const {
     socialLinks = [],
     streak = 0,
-    githubUsername = null,
     timeSpent = "0 minutes",
     activity = [],
     notes = []
diff --git a/frontend/src/Components/Hero.jsx b/frontend/src/Components/Hero.jsx
index d39cda8..a8fd435 100644
--- a/frontend/src/Components/Hero.jsx
+++ b/frontend/src/Components/Hero.jsx
@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useRef } from "react";
+import React, { useState, useRef } from "react";
 import { motion } from "framer-motion";
 
 import { ArrowRightIcon } from "lucide-react";
diff --git a/frontend/src/Components/auth/ForgotPassword.jsx b/frontend/src/Components/auth/ForgotPassword.jsx
index a025f38..d94a387 100644
--- a/frontend/src/Components/auth/ForgotPassword.jsx
+++ b/frontend/src/Components/auth/ForgotPassword.jsx
@@ -26,7 +26,7 @@ const ForgotPassword = () => {
       } else {
         setStatus({ type: "error", message: data.message || "Something went wrong" });
       }
-    } catch (error) {
+    } catch {
       setStatus({ type: "error", message: "Server error. Try again later." });
     } finally {
       setLoading(false);
diff --git a/frontend/src/Components/auth/Login.jsx b/frontend/src/Components/auth/Login.jsx
index 6d1182b..ede8dca 100644
--- a/frontend/src/Components/auth/Login.jsx
+++ b/frontend/src/Components/auth/Login.jsx
@@ -45,7 +45,7 @@ const Login = () => {
       let data;
       try {
         data = await response.json();
-      } catch (jsonError) {
+      } catch {
         throw new Error("Invalid server response");
       }
 
@@ -69,7 +69,7 @@ const Login = () => {
     }
   };
 
-  const handleVerificationSuccess = (user) => {
+  const handleVerificationSuccess = () => {
     navigate("/dashboard");
   };
 
diff --git a/frontend/src/Components/auth/Register.jsx b/frontend/src/Components/auth/Register.jsx
index 936d937..5134caf 100644
--- a/frontend/src/Components/auth/Register.jsx
+++ b/frontend/src/Components/auth/Register.jsx
@@ -115,16 +115,11 @@ const Register = () => {
     }
   };
 
-  const handleVerificationSuccess = (user) => {
+  const handleVerificationSuccess = () => {
     // Redirect to dashboard
     window.location.href = "/dashboard";
   };
 
-  const handleGoogleRegister = () => {
-    // Use backend OAuth route at /auth (not protected /api)
-    window.location.href = `${import.meta.env.VITE_API_URL}/auth/google`;
-  };
-
   if (showVerification) {
     return (
       <EmailVerification
diff --git a/frontend/src/Components/contact.jsx b/frontend/src/Components/contact.jsx
index aa0046a..2c66ae8 100644
--- a/frontend/src/Components/contact.jsx
+++ b/frontend/src/Components/contact.jsx
@@ -45,7 +45,7 @@ const Contact = () => {
           message: "Something went wrong. Please try again.",
         });
       }
-    } catch (error) {
+    } catch {
       setStatus("error");
       setError("root", { message: "Something went wrong. Please try again." });
     }
diff --git a/frontend/src/Components/ui/Card.jsx b/frontend/src/Components/ui/Card.jsx
index 3689ea8..efc1fd8 100644
--- a/frontend/src/Components/ui/Card.jsx
+++ b/frontend/src/Components/ui/Card.jsx
@@ -1,4 +1,6 @@
 // src/Components/ui/Card.jsx
+import React from "react";
+
 export function Card({ children, className = "" }) {
   return (
     <div className={`rounded-xl border bg-white shadow p-4 ${className}`}>
@@ -9,12 +11,16 @@ export function Card({ children, className = "" }) {
 
 export function CardHeader({ children, className = "" }) {
   return (
-    <div className={`font-bold text-lg mb-2 ${className}`}>{children}</div>
+    <div className={`font-bold text-lg mb-2 ${className}`}>
+      {children}
+    </div>
   );
 }
 
 export function CardTitle({ children, className = "" }) {
-  return <h3 className={`text-xl font-semibold ${className}`}>{children}</h3>;
+  return (
+    <h3 className={`text-xl font-semibold ${className}`}>{children}</h3>
+  );
 }
 
 export function CardContent({ children, className = "" }) {
@@ -24,3 +30,4 @@ export function CardContent({ children, className = "" }) {
 export function CardFooter({ children, className = "" }) {
   return <div className={`mt-2 border-t pt-2 ${className}`}>{children}</div>;
 }
+
diff --git a/frontend/src/Components/ui/DarkModeToggle.jsx b/frontend/src/Components/ui/DarkModeToggle.jsx
index 87cd174..fa96c08 100644
--- a/frontend/src/Components/ui/DarkModeToggle.jsx
+++ b/frontend/src/Components/ui/DarkModeToggle.jsx
@@ -12,7 +12,7 @@ export default function DarkModeToggle() {
       aria-label="Toggle dark mode"
       className={`flex items-center justify-center w-12 h-12 rounded-full transition-all duration-300 cursor-pointer hover:scale-110   ${
         isDark
-          ? "bg-[ --background]"
+          ? "bg-[--background]"
           : "bg-[--foreground]"
       }`}
     >
diff --git a/frontend/src/Components/ui/Loader.tsx b/frontend/src/Components/ui/Loader.tsx
index d26160b..6a8f0b1 100644
--- a/frontend/src/Components/ui/Loader.tsx
+++ b/frontend/src/Components/ui/Loader.tsx
@@ -1,5 +1,5 @@
 import React from "react";
-import { cn } from "@/lib/utils"; // if you have shadcn's `cn`, else remove
+// import { cn } from "@/lib/utils"; // if you have shadcn's `cn`, else remove
 
 interface LoaderProps {
   className?: string;
diff --git a/frontend/src/Components/ui/ScrollRevealWrapper.jsx b/frontend/src/Components/ui/ScrollRevealWrapper.jsx
index 6983a0d..53e6826 100644
--- a/frontend/src/Components/ui/ScrollRevealWrapper.jsx
+++ b/frontend/src/Components/ui/ScrollRevealWrapper.jsx
@@ -1,15 +1,39 @@
 // src/components/ScrollRevealWrapper.jsx
+import React, { useRef } from "react";
 import { motion } from "framer-motion";
 import { useInView } from "react-intersection-observer";
 
-export default function ScrollRevealWrapper({ children, delay = 0, className = "" }) {
-  const { ref, inView } = useInView({ triggerOnce: true, threshold: 0.1 });
+interface ScrollRevealWrapperProps {
+  children: React.ReactNode;
+  delay?: number;
+  className?: string;
+}
+
+export default function ScrollRevealWrapper({
+  children,
+  delay = 0,
+  className = "",
+}: ScrollRevealWrapperProps) {
+  const ref = useRef<HTMLDivElement>(null);
+
+  // Track if element is in view
+  const { inView } = useInView({
+    triggerOnce: true,
+    threshold: 0.1,
+  });
+
+  // Animation variants
+  const variants = {
+    hidden: { opacity: 0, y: 40 },
+    visible: { opacity: 1, y: 0 },
+  };
 
   return (
     <motion.div
       ref={ref}
-      initial={{ opacity: 0, y: 40 }}
-      animate={inView ? { opacity: 1, y: 0 } : {}}
+      variants={variants}
+      initial="hidden"
+      animate={inView ? "visible" : "hidden"}
       transition={{ duration: 0.6, delay }}
       className={className}
     >
@@ -17,3 +41,4 @@ export default function ScrollRevealWrapper({ children, delay = 0, className = "
     </motion.div>
   );
 }
+
diff --git a/frontend/src/Components/ui/button.jsx b/frontend/src/Components/ui/button.jsx
index 69ad71f..1e7e278 100644
--- a/frontend/src/Components/ui/button.jsx
+++ b/frontend/src/Components/ui/button.jsx
@@ -1,39 +1,8 @@
 import * as React from "react"
 import { Slot } from "@radix-ui/react-slot"
-import { cva } from "class-variance-authority";
 
 import { cn } from "@/lib/utils"
-
-const buttonVariants = cva(
-  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
-  {
-    variants: {
-      variant: {
-        default:
-          "bg-primary text-primary-foreground shadow-xs hover:bg-primary/90",
-        destructive:
-          "bg-destructive text-white shadow-xs hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
-        outline:
-          "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50",
-        secondary:
-          "bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80",
-        ghost:
-          "hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50",
-        link: "text-primary underline-offset-4 hover:underline",
-      },
-      size: {
-        default: "h-9 px-4 py-2 has-[>svg]:px-3",
-        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
-        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
-        icon: "size-9",
-      },
-    },
-    defaultVariants: {
-      variant: "default",
-      size: "default",
-    },
-  }
-)
+import { buttonVariants } from "@/lib/buttonVariants"
 
 function Button({
   className,
diff --git a/frontend/src/Components/ui/input.jsx b/frontend/src/Components/ui/input.jsx
index e267074..6b21d1f 100644
--- a/frontend/src/Components/ui/input.jsx
+++ b/frontend/src/Components/ui/input.jsx
@@ -1,22 +1,6 @@
 import * as React from "react"
-import { cva } from "class-variance-authority"
 import { cn } from "@/lib/utils"
-
-const inputVariants = cva(
-  "flex w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 transition-all",
-  {
-    variants: {
-      size: {
-        default: "h-10",
-        sm: "h-9",
-        lg: "h-11",
-      },
-    },
-    defaultVariants: {
-      size: "default",
-    },
-  }
-)
+import { inputVariants } from "@/lib/inputVariants"
 
 const Input = React.forwardRef(({ className, type, size, ...props }, ref) => {
   return (
diff --git a/frontend/src/context/TimerContext.jsx b/frontend/src/context/TimerContext.jsx
index 79e2d26..8c4dc74 100644
--- a/frontend/src/context/TimerContext.jsx
+++ b/frontend/src/context/TimerContext.jsx
@@ -1,4 +1,5 @@
-import { createContext, useContext, useState, useEffect } from "react";
+import { createContext, useContext, useState, useEffect, useCallback } from "react";
+import { SESSIONS_BEFORE_LONG_BREAK } from "../lib/timerConstants";
 
 const TimerContext = createContext();
 
@@ -6,8 +7,6 @@ export function useTimer() {
   return useContext(TimerContext);
 }
 
-const SESSIONS_BEFORE_LONG_BREAK = 4;
-
 export function TimerProvider({ children }) {
   const [workTime, setWorkTime] = useState(25 * 60);
   const [shortBreak, setShortBreak] = useState(5 * 60);
@@ -27,6 +26,27 @@ export function TimerProvider({ children }) {
     return saved ? Number(saved) : workTime;
   });
 
+  const handleSessionEnd = useCallback(() => {
+    const nextSession = isWork ? sessions + 1 : sessions;
+    setSessions(nextSession);
+    const nextTime = isWork
+      ? nextSession % SESSIONS_BEFORE_LONG_BREAK === 0
+        ? longBreak
+        : shortBreak
+      : workTime;
+
+    setIsWork(prev => !prev);
+    setTimeLeft(nextTime);
+    setEndTimestamp(Date.now() + nextTime * 1000);
+    setIsRunning(true);
+
+    if ("Notification" in window && Notification.permission === "granted") {
+      new Notification(
+        isWork ? "Work session complete! Time for a break 🎉" : "Break over! Back to work 💻"
+      );
+    }
+  }, [sessions, isWork, longBreak, shortBreak, workTime]);
+
   // Timer tick using requestAnimationFrame
   useEffect(() => {
     let raf;
@@ -50,7 +70,7 @@ export function TimerProvider({ children }) {
     }
 
     return () => cancelAnimationFrame(raf);
-  }, [isRunning, endTimestamp]);
+  }, [isRunning, endTimestamp, handleSessionEnd]);
 
   // Persist timer info
   useEffect(() => localStorage.setItem("pomodoroTimeLeft", timeLeft), [timeLeft]);
@@ -59,27 +79,6 @@ export function TimerProvider({ children }) {
     if (endTimestamp) localStorage.setItem("pomodoroEndTimestamp", endTimestamp);
   }, [endTimestamp]);
 
-  const handleSessionEnd = () => {
-    const nextSession = isWork ? sessions + 1 : sessions;
-    setSessions(nextSession);
-    const nextTime = isWork
-      ? nextSession % SESSIONS_BEFORE_LONG_BREAK === 0
-        ? longBreak
-        : shortBreak
-      : workTime;
-
-    setIsWork(prev => !prev);
-    setTimeLeft(nextTime);
-    setEndTimestamp(Date.now() + nextTime * 1000);
-    setIsRunning(true);
-
-    if ("Notification" in window && Notification.permission === "granted") {
-      new Notification(
-        isWork ? "Work session complete! Time for a break 🎉" : "Break over! Back to work 💻"
-      );
-    }
-  };
-
   const startTimer = () => {
     if (!endTimestamp) setEndTimestamp(Date.now() + timeLeft * 1000);
     setIsRunning(true);
diff --git a/frontend/src/lib/buttonVariants.js b/frontend/src/lib/buttonVariants.js
new file mode 100644
index 0000000..327aff1
--- /dev/null
+++ b/frontend/src/lib/buttonVariants.js
@@ -0,0 +1,32 @@
+import { cva } from "class-variance-authority";
+
+export const buttonVariants = cva(
+  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-all disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg:not([class*='size-'])]:size-4 shrink-0 [&_svg]:shrink-0 outline-none focus-visible:border-ring focus-visible:ring-ring/50 focus-visible:ring-[3px] aria-invalid:ring-destructive/20 dark:aria-invalid:ring-destructive/40 aria-invalid:border-destructive",
+  {
+    variants: {
+      variant: {
+        default:
+          "bg-primary text-primary-foreground shadow-xs hover:bg-primary/90",
+        destructive:
+          "bg-destructive text-white shadow-xs hover:bg-destructive/90 focus-visible:ring-destructive/20 dark:focus-visible:ring-destructive/40 dark:bg-destructive/60",
+        outline:
+          "border bg-background shadow-xs hover:bg-accent hover:text-accent-foreground dark:bg-input/30 dark:border-input dark:hover:bg-input/50",
+        secondary:
+          "bg-secondary text-secondary-foreground shadow-xs hover:bg-secondary/80",
+        ghost:
+          "hover:bg-accent hover:text-accent-foreground dark:hover:bg-accent/50",
+        link: "text-primary underline-offset-4 hover:underline",
+      },
+      size: {
+        default: "h-9 px-4 py-2 has-[>svg]:px-3",
+        sm: "h-8 rounded-md gap-1.5 px-3 has-[>svg]:px-2.5",
+        lg: "h-10 rounded-md px-6 has-[>svg]:px-4",
+        icon: "size-9",
+      },
+    },
+    defaultVariants: {
+      variant: "default",
+      size: "default",
+    },
+  }
+);
diff --git a/frontend/src/lib/inputVariants.js b/frontend/src/lib/inputVariants.js
new file mode 100644
index 0000000..342ab89
--- /dev/null
+++ b/frontend/src/lib/inputVariants.js
@@ -0,0 +1,17 @@
+import { cva } from "class-variance-authority";
+
+export const inputVariants = cva(
+  "flex w-full rounded-md border border-input bg-background px-3 py-2 text-sm ring-offset-background file:border-0 file:bg-transparent file:text-sm file:font-medium placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 transition-all",
+  {
+    variants: {
+      size: {
+        default: "h-10",
+        sm: "h-9",
+        lg: "h-11",
+      },
+    },
+    defaultVariants: {
+      size: "default",
+    },
+  }
+);
diff --git a/frontend/src/lib/timerConstants.js b/frontend/src/lib/timerConstants.js
new file mode 100644
index 0000000..25404c7
--- /dev/null
+++ b/frontend/src/lib/timerConstants.js
@@ -0,0 +1 @@
+export const SESSIONS_BEFORE_LONG_BREAK = 4;
diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index ea412a0..59ebf1f 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -1,8 +1,11 @@
 import path from "path";
+import { fileURLToPath } from "url";
 import tailwindcss from "@tailwindcss/vite";
 import react from "@vitejs/plugin-react";
 import { defineConfig } from "vite";
 
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+
 // https://vite.dev/config/
 export default defineConfig({
   plugins: [react(), tailwindcss()],