Fix/25 fix header and union section

package.json

@@ -4,7 +4,7 @@
   "version": "0.0.0",
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "vite --host",
     "type-check": "tsc --noEmit",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
@@ -15,6 +15,7 @@
     "axios": "^1.7.9",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",
+    "react-icons": "^5.4.0",
     "react-responsive": "^10.0.0",
     "react-router": "^7.1.5",
     "react-slick": "^0.30.3",

src/pages/Main/FarmSyetemNav/FarmSystemNav.styled.ts

@@ -7,12 +7,14 @@ interface FixedNavProps {
 
 export const FixedNavWrapper = styled.div<FixedNavProps>`
   position: fixed;
-  top: ${({ isVisible }) => (isVisible ? "10px" : "-50px")};
-  right: 20px;
+  top: ${({ isVisible, $isMobile }) =>
+    !$isMobile ? (isVisible ? "30px" : "-50px") :(isVisible ? "20px" : "-150px")};
+  right: ${({ $isMobile }) => ($isMobile ? "20px" : "50px")};
   transition: top 0.3s ease-in-out;
   z-index: 1000;
 `;
 
+
 export const Navbar = styled.nav<{ $isMobile: boolean }>`
   background-color: #216D35;
   padding: 10px 20px;

src/pages/Main/FarmSyetemNav/FarmSystemNav.tsx

@@ -1,21 +1,43 @@
 import * as S from './FarmSystemNav.styled';
 import { useState, useEffect } from 'react';
 import useMediaQueries from '@/hooks/useMediaQueries';
+import MobileNav from './MobileNav';
+
+const sectionIds = ["about", "tracks", "achievements", "eligibility"];
 
 export default function FarmSystemNav() {
   const [isVisible, setIsVisible] = useState(false);
   const { isMobile } = useMediaQueries();
+  const [currentSection, setCurrentSection] = useState("about");
 
   useEffect(() => {
     const handleScroll = () => {
-      if (window.scrollY > 200) {
+      const scrollPosition = window.scrollY;
+
+      if (scrollPosition > 200) {
         setIsVisible(true);
       } else {
         setIsVisible(false);
+      }      
+
+      // 현재 섹션 확인
+      for (const section of sectionIds) {
+        const element = document.getElementById(section);
+        if (element) {
+          const offsetTop = element.offsetTop;
+          const offsetBottom = offsetTop + element.offsetHeight;
+
+          if (scrollPosition >= offsetTop - 100 && scrollPosition < offsetBottom - 100) {
+            setCurrentSection(section);
+          }
+        }
       }
     };
 
+
     window.addEventListener("scroll", handleScroll);
+    handleScroll();
+
     return () => {
       window.removeEventListener("scroll", handleScroll);
     };
@@ -29,25 +51,33 @@ export default function FarmSystemNav() {
         top: targetElement.getBoundingClientRect().top + window.scrollY,
         behavior: "smooth",
       });
+      setCurrentSection(targetId);
     }
   };
 
   return (
     <S.FixedNavWrapper isVisible={isVisible} $isMobile={isMobile}>
-      <S.Navbar $isMobile={isMobile}>
-        <S.NavItem $isMobile={isMobile} href="#about" onClick={(e) => handleSmoothScroll(e, "#about")}>
-          <S.Circle $isMobile={isMobile} /> Farm System이란?
-        </S.NavItem>
-        <S.NavItem $isMobile={isMobile} href="#tracks" onClick={(e) => handleSmoothScroll(e, "#tracks")}>
-          <S.Circle $isMobile={isMobile} /> 트랙 및 커리큘럼
-        </S.NavItem>
-        <S.NavItem $isMobile={isMobile} href="#achievements" onClick={(e) => handleSmoothScroll(e, "#achievements")}>
-          <S.Circle $isMobile={isMobile} /> 활동 및 성과
-        </S.NavItem>
-        <S.NavItem $isMobile={isMobile} href="#eligibility" onClick={(e) => handleSmoothScroll(e, "#eligibility")}>
-          <S.Circle $isMobile={isMobile} /> 지원 요건
-        </S.NavItem>
-      </S.Navbar>
+      {isMobile ? (
+        <MobileNav 
+          currentSection={currentSection}
+          handleSmoothScroll={handleSmoothScroll}
+        />
+      ) : (
+        <S.Navbar $isMobile={isMobile}>
+          <S.NavItem $isMobile={isMobile} href="#about" onClick={(e) => handleSmoothScroll(e, "#about")}>
+            <S.Circle $isMobile={isMobile} /> Farm System이란?
+          </S.NavItem>
+          <S.NavItem $isMobile={isMobile} href="#tracks" onClick={(e) => handleSmoothScroll(e, "#tracks")}>
+            <S.Circle $isMobile={isMobile} /> 트랙 및 커리큘럼
+          </S.NavItem>
+          <S.NavItem $isMobile={isMobile} href="#achievements" onClick={(e) => handleSmoothScroll(e, "#achievements")}>
+            <S.Circle $isMobile={isMobile} /> 활동 및 성과
+          </S.NavItem>
+          <S.NavItem $isMobile={isMobile} href="#eligibility" onClick={(e) => handleSmoothScroll(e, "#eligibility")}>
+            <S.Circle $isMobile={isMobile} /> 지원 요건
+          </S.NavItem>
+        </S.Navbar>
+      )}
     </S.FixedNavWrapper>
   );
 }

src/pages/Main/FarmSyetemNav/MobileNav.styled.ts

@@ -0,0 +1,52 @@
+import styled from 'styled-components';
+
+export const MobileNavbar = styled.div<{ isNavOpen: boolean }>`
+  max-height: ${({ isNavOpen }) => (isNavOpen ? "300px" : "80px")};
+  overflow: hidden;
+  transition: max-height 0.1s ease-in-out;
+
+  display: inline-flex;
+  height: auto;
+  padding: 10px 10px;
+  flex-direction: column;
+  justify-content: center;
+  align-items: center;
+
+  width: 150px;
+
+  border-radius: 20px 0px 20px 20px;
+  border: 1px solid var(--FarmSystem_White, #FCFCFC);
+  background: var(--FarmSystem_Green01, #28723F);
+`;
+
+export const MobileNavItem = styled.a`
+  display: flex;
+  padding: 5px 0px;
+  align-items: center;
+  gap: 3px;
+  flex: 1 0 0;
+`;
+
+export const MobileNavText = styled.p`
+  color: var(--FarmSystem_White, #FCFCFC);
+  text-align: center;
+  font-size: 14px;
+  font-style: normal;
+  font-weight: 500;
+  line-height: 16px;
+  letter-spacing: -0.24px;
+`;
+
+/* 확장/축소 버튼 스타일 */
+export const ExpandButton = styled.button`
+  color: var(--FarmSystem_White, #FCFCFC);
+  font-size: 24px;
+  cursor: pointer;
+  width: 80%;
+  background-color: rgba(0, 0, 0, 0.5);
+  border-radius: 15px; 
+
+  display: flex;
+  justify-content: center;
+  align-items: center;
+`;

src/pages/Main/FarmSyetemNav/MobileNav.tsx

@@ -0,0 +1,74 @@
+import { useState } from 'react';
+import * as S from './MobileNav.styled';
+import { IoMdArrowDropdown, IoMdArrowDropup } from "react-icons/io";
+
+interface MobileNavProps {
+  currentSection: string;
+  handleSmoothScroll: (
+    event: React.MouseEvent<HTMLAnchorElement, MouseEvent>,
+    targetId: string
+  ) => void;
+}
+
+const navItems = [
+  { id: "about", text: "Farm System이란?" },
+  { id: "tracks", text: "트랙 및 커리큘럼" },
+  { id: "achievements", text: "활동 및 성과" },
+  { id: "eligibility", text: "지원 요건" },
+];
+
+export default function MobileNav({ currentSection, handleSmoothScroll }: MobileNavProps) {
+  const [isNavOpen, setIsNavOpen] = useState(false);
+  const currentNavItem = navItems.find(item => item.id === currentSection) ?? navItems[0];
+
+  return (
+    <S.MobileNavbar isNavOpen={isNavOpen}>
+      {/* 
+        isNavOpen이 false면 첫 번째 메뉴만 보이게, 
+        true면 모든 메뉴가 보이게 설정 
+      */}
+      {!isNavOpen && (
+        <S.MobileNavItem
+          href={"#" + currentNavItem.id}
+          onClick={(e) => handleSmoothScroll(e, currentNavItem.id)}
+        >
+          <S.MobileNavText>{currentNavItem.text}</S.MobileNavText>
+        </S.MobileNavItem>
+      )}
+
+      {isNavOpen && (
+        <>
+          <S.MobileNavItem
+            href="#about"
+            onClick={(e) => handleSmoothScroll(e, "#about")}
+          >
+            <S.MobileNavText>Farm System이란?</S.MobileNavText>
+          </S.MobileNavItem>
+          <S.MobileNavItem
+            href="#tracks"
+            onClick={(e) => handleSmoothScroll(e, "#tracks")}
+          >
+            <S.MobileNavText>트랙 및 커리큘럼</S.MobileNavText>
+          </S.MobileNavItem>
+          <S.MobileNavItem
+            href="#achievements"
+            onClick={(e) => handleSmoothScroll(e, "#achievements")}
+          >
+            <S.MobileNavText>활동 및 성과</S.MobileNavText>
+          </S.MobileNavItem>
+          <S.MobileNavItem
+            href="#eligibility"
+            onClick={(e) => handleSmoothScroll(e, "#eligibility")}
+          >
+            <S.MobileNavText>지원 요건</S.MobileNavText>
+          </S.MobileNavItem>
+        </>
+      )}
+
+      {/* 확장/축소 버튼 */}
+      <S.ExpandButton onClick={() => setIsNavOpen((prev) => !prev)}>
+        {isNavOpen ? <IoMdArrowDropup /> : <IoMdArrowDropdown />}
+      </S.ExpandButton>
+    </S.MobileNavbar>
+  );
+}