diff --git a/src/App.css b/src/App.css
index 7d5209f2..f326baa1 100644
--- a/src/App.css
+++ b/src/App.css
@@ -1,7 +1,7 @@
 body {
   background-color: #e2e8f0;
   margin: 0;
-  font-family: "Noto Sans KR", sans-serif;
+  font-family: "Pretendard", "Noto Sans KR", sans-serif;
 }
 
 .App {
@@ -10,7 +10,7 @@ body {
 }
 
 .page-title {
-  font-size: 24px;
+  font-size: 30px;
   font-weight: bold;
   color: #8c02e2;
   margin-bottom: 20px;
@@ -24,14 +24,15 @@ body {
 }
 
 .movie-card {
-  width: 120px;
-  background-color: #308cca;
+  height: auto;
+  width: 150px;
+  background-color: #9c47e7;
   color: white;
-  border-radius: 6px;
+  border-radius: 10px;
   display: flex;
   flex-direction: column;
   align-items: center;
-  padding-bottom: 10px;
+  padding-bottom: 15px;
   transition: transform 0.2s ease;
 }
 
@@ -39,16 +40,6 @@ body {
   transform: scale(1.05);
 }
 
-.poster-box {
-  width: 100%;
-  height: 160px;
-  background-color: #1b6ca8;
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  overflow: hidden;
-}
-
 .poster-box img {
   width: 100%;
   height: 100%;
diff --git a/src/App.jsx b/src/App.jsx
index cd8df10b..36fb532d 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -1,14 +1,18 @@
 import "./App.css";
 import React, { useState } from "react";
 import MovieCard from "./component/MovieCard";
-import { Link } from "react-router-dom";
+import { Link, useSearchParams } from "react-router-dom";
 import { useEffect } from "react";
 
 function App() {
   const [movies, setMovies] = useState([]);
+  const [loading, setLoading] = useState(false);
+  const [searchParams] = useSearchParams();
+  const query = searchParams.get("query");
 
   useEffect(() => {
     const fetchMovies = async () => {
+      setLoading(true);
       try {
         const options = {
           method: "GET",
@@ -18,44 +22,62 @@ function App() {
           },
         };
 
-        const response = await fetch(
-          "https://api.themoviedb.org/3/discover/movie?include_adult=false&include_video=false&language=en-US&page=1&sort_by=popularity.desc",
-          options
-        );
+        let url = "";
+
+        if (query && query.trim() !== "") {
+          url = `https://api.themoviedb.org/3/search/movie?query=${encodeURIComponent(
+            query
+          )}&include_adult=false&language=en-US&page=1`;
+        } else {
+          url =
+            "https://api.themoviedb.org/3/discover/movie?include_adult=false&include_video=false&language=en-US&page=1&sort_by=popularity.desc";
+        }
+
+        const response = await fetch(url, options);
 
         const data = await response.json();
 
-        const filteredMovies = data.results.filter(
-          (movie) => movie.adult === false
-        );
+        const filteredMovies = data.results
+          ? data.results.filter((movie) => movie.adult === false)
+          : [];
 
         setMovies(filteredMovies);
       } catch (error) {
         console.error("데이터 불러오는 중 오류가 발생했습니다", error);
+      } finally {
+        setLoading(false);
       }
     };
     fetchMovies();
-  }, []);
+  }, [query]);
 
   return (
     <>
       <div className="App">
         <h1 className="page-title">MovieCard</h1>
-        <div className="movie-list">
-          {movies.map((movie) => (
-            <Link
-              to={`/details/${movie.id}`}
-              key={movie.id}
-              className="movie-link"
-            >
-              <MovieCard
-                title={movie.title}
-                posterPath={movie.poster_path}
-                voteAverage={movie.vote_average}
-              />
-            </Link>
-          ))}
-        </div>
+        {loading ? (
+          <p>로딩중</p>
+        ) : (
+          <div className="movie-list">
+            {movies.length > 0 ? (
+              movies.map((movie) => (
+                <Link
+                  to={`/details/${movie.id}`}
+                  key={movie.id}
+                  className="movie-link"
+                >
+                  <MovieCard
+                    title={movie.title}
+                    posterPath={movie.poster_path}
+                    voteAverage={movie.vote_average}
+                  />
+                </Link>
+              ))
+            ) : (
+              <p>검색 결과가 없습니다.</p>
+            )}
+          </div>
+        )}
       </div>
     </>
   );
diff --git a/src/component/MovieDetail.css b/src/component/MovieDetail.css
index 99754f5d..25dccefe 100644
--- a/src/component/MovieDetail.css
+++ b/src/component/MovieDetail.css
@@ -37,19 +37,20 @@
 /* 상세 내용 영역 */
 .detail-content {
   display: flex;
-  align-items: flex-start;
+  align-items: center;
   justify-content: center;
-  gap: 40px;
-  padding: 40px;
   background-color: #111;
-  flex-wrap: wrap; /* ✅ 반응형 정렬 */
+  flex-wrap: wrap;
 }
 
 .poster-box img {
-  width: 300px;
-  height: auto;
+  width: 150px;
+  height: 250px;
   border-radius: 10px;
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
+  margin: 10px;
+  justify-self: start;
+  align-items: flex-start;
 }
 
 .info-box {
diff --git a/src/component/NavBar.css b/src/component/NavBar.css
index 916c8bb1..1d777149 100644
--- a/src/component/NavBar.css
+++ b/src/component/NavBar.css
@@ -49,3 +49,12 @@
   display: flex;
   align-items: center;
 }
+
+.logo-link {
+  text-decoration: none;
+  color: inherit;
+}
+
+.logo-link:hover {
+  opacity: 0.8;
+}
diff --git a/src/component/NavBar.jsx b/src/component/NavBar.jsx
index 1deaee6c..ec2a4bb3 100644
--- a/src/component/NavBar.jsx
+++ b/src/component/NavBar.jsx
@@ -1,11 +1,33 @@
-import { Link } from "react-router-dom";
+import { Link, useSearchParams } from "react-router-dom";
 import "./NavBar.css";
+import { useState } from "react";
+import useDebounce from "../hooks/useDebounce";
+import { useEffect } from "react";
 
 function NavBar() {
+  const [input, setInput] = useState("");
+  const [searchParams, setSearchParams] = useSearchParams();
+  const debouncedInput = useDebounce(input, 500);
+
+  useEffect(() => {
+    const q = searchParams.get("query") || "";
+    setInput(q);
+  }, []);
+
+  useEffect(() => {
+    if (debouncedInput && debouncedInput.trim() !== "") {
+      setSearchParams({ query: debouncedInput.trim() });
+    } else {
+      setSearchParams({});
+    }
+  }, [debouncedInput, setSearchParams]);
+
   return (
     <nav className="navbar">
       <div className="navbar-left">
-        <h1 className="logo">OZ무비</h1>
+        <Link to="/" className="logo-link">
+          <h1 className="logo">🎬 OZ무비</h1>
+        </Link>
       </div>
 
       <div className="navbar-center">
@@ -13,6 +35,8 @@ function NavBar() {
           type="text"
           placeholder="영화를 검색해보세요"
           className="search-bar"
+          value={input}
+          onChange={(e) => setInput(e.target.value)}
         />
       </div>
 
diff --git a/src/hooks/useDebounce.js b/src/hooks/useDebounce.js
new file mode 100644
index 00000000..6dbd59dc
--- /dev/null
+++ b/src/hooks/useDebounce.js
@@ -0,0 +1,12 @@
+import { useEffect, useState } from "react";
+
+export default function useDebounce(value, delay = 500) {
+  const [debouncedValue, setDebouncedValue] = useState(value);
+
+  useEffect(() => {
+    const timer = setTimeout(() => setDebouncedValue(value), delay);
+    return () => clearTimeout(timer);
+  }, [value, delay]);
+
+  return debouncedValue;
+}
diff --git a/src/media.css b/src/media.css
new file mode 100644
index 00000000..4d737a76
--- /dev/null
+++ b/src/media.css
@@ -0,0 +1,35 @@
+@media (max-width: 600px) {
+  .movie-list {
+    grid-template-columns: repeat(2, 1fr);
+  }
+
+  .page-title {
+    font-size: 1.5rem;
+  }
+}
+
+@media (min-width: 601px) and (max-width: 1024px) {
+  .movie-list {
+    grid-template-columns: repeat(3, 1fr);
+  }
+}
+
+@media (min-width: 1025px) {
+  .movie-list {
+    grid-template-columns: repeat(5, 1fr);
+  }
+}
+
+.navbar {
+  display: flex;
+  justify-content: space-between;
+  padding: 10px 20px;
+  background: #1e293b;
+}
+
+@media (max-width: 600px) {
+  .navbar-right {
+    display: flex;
+    gap: 10px;
+  }
+}