/* 메인 페이지 스타일 */

/* ===== [스크롤 시 배경/로고 전환 효과 - 사용 중지, 주석처리] =====
#header-wrap .fixed { background-color: #fff; top: 0; }
#header-wrap .fixed .logo a { background: url(../img/top_logo.png) no-repeat; background-size: contain; }
#header-wrap .fixed #mobile-menu-btn span { background-color: #1a1a1a; }
#header-wrap .fixed #sitemap span { background-color: #1a1a1a; }
#header-wrap .fixed #pc-nav > ul > li > a { color: #1a1a1a; font-weight: 600; }
================================================================= */

/* 헤더 스타일 */
#header-wrap {
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    /* 항상 흰 배경 고정 */
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* ===== [기존 스크롤 시 배경 변경 - 사용 중지, 주석처리] =====
#header-wrap.scrolled { position: fixed; top: 0; left: 0; width: 100%; background-color: #fff; box-shadow: 0 2px 5px rgba(0,0,0,0.1); z-index: 1000; }
================================================================= */

#header { margin: 0 auto; padding: 0 40px; display: flex; justify-content: space-between; align-items: center; height: 90px; }

/* 로고 스타일 */
.logo { flex-shrink: 0; }
.logo a {
    display: inline-block;
    padding: 10px 0;
    text-decoration: none;
    /* 검정 로고(top_logo)로 고정 */
    background: url(../img/top_logo.png) no-repeat;
    background-size: contain;
    width: 150px;
    height: 40px;
}

/* 헤더 우측 영역 스타일 */
.header-right { display: flex; align-items: center; }

/* PC 네비게이션 스타일 */
#pc-nav { margin-right: 20px; }
#pc-nav > ul { display: flex; list-style-type: none; margin: 0; padding: 0; }
#pc-nav > ul > li { position: relative; margin-right: 50px; }
#pc-nav > ul > li:last-child { margin-right: 0; }
#pc-nav > ul > li > a {
    display: block;
    padding: 10px 0;
    text-decoration: none;
    /* 항상 어두운 글자색 고정 (흰 배경 위에 보이도록) */
    color: #333;
    font-weight: 500;
    font-size: 18px;
    cursor: pointer;
    opacity: 0.8;
}
#pc-nav > ul > li > a:hover { opacity: 1; color: #333; }

/* PC 네비게이션 서브메뉴 스타일 */
#pc-nav > ul > li > ul { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); background-color: #000; padding: 25px 0; min-width: 220px; z-index: 1000; visibility: hidden; opacity: 0; border-radius: 10px; transition: visibility 0s, opacity 0.3s linear; }
#pc-nav > ul > li:hover > ul { visibility: visible; opacity: 1; }
#pc-nav > ul > li > ul > li { position: relative; padding: 5px 10px; opacity: 0; transform: translateX(-20px); }
#pc-nav > ul > li > ul > li.show { animation: slideInRight 0.3s ease forwards; }
#pc-nav > ul > li > ul > li > a { display: block; padding: 8px 20px; color: #fff; opacity: 0.8; text-decoration: none; font-size: 17px; transition: background-color 0.3s ease; }
#pc-nav > ul > li > ul > li > a:hover { background-color: transparent; opacity: 1; }

/* 드롭다운 폭 - 가장 긴 텍스트에 맞춰 자동 확장, 줄바꿈 방지 */
#pc-nav > ul > li > ul {
    width: max-content;
    min-width: 220px;
}
#pc-nav > ul > li > ul > li > a {
    white-space: nowrap;
}

/* 3단 메뉴 스타일 - 항상 펼쳐진 상태로 노출 */
#pc-nav > ul > li > ul > li > ul.third-level { display: block; position: static; background-color: #333; box-shadow: none; padding: 10px 0; line-height: 2.1; }
#pc-nav > ul > li > ul > li > ul.third-level > li { opacity: 1; transform: none; }
#pc-nav > ul > li > ul > li > ul.third-level > li.show { animation: none; }
#pc-nav > ul > li > ul > li > ul.third-level > li > a { padding: 8px 30px; font-size: 16px; color: #fff; opacity: 0.8; transition: background-color 0.3s ease; }
#pc-nav > ul > li > ul > li > ul.third-level > li > a:hover { background-color: transparent; color: #fff; opacity: 1; }

/* 서브메뉴 애니메이션 스타일 */
@keyframes slideInRight { 0% { opacity: 0; transform: translateX(-20px); } 100% { opacity: 1; transform: translateX(0); } }

/* 로그인 및 사이트맵 컨테이너 스타일 */
.login-sitemap-container { display: flex; align-items: center; }
.login-sitemap-container .sitemap-button { color: #0A0A0A}
#login-box { display: flex; align-items: center; margin-right: 15px; }
#login-box a { margin-left: 15px; text-decoration: none; color: #fff; padding: 14px 26px; background-color: #242424; border-radius: 50px; text-align: center; }

/* 사이트맵 버튼 스타일 */
#sitemap-container { position: relative; width: 30px; height: 30px; display: flex; align-items: center; }
.sitemap-button { width: 30px; height: 30px; background: none; border: none; cursor: pointer; padding: 0; z-index: 1001; position: relative; color: #333; }
#sitemap span, #sitemap_close span {
    display: block;
    width: 100%;
    height: 2px;
    /* 항상 어두운 색 고정 (흰 배경 위에 보이도록) */
    background-color: #333;
    margin: 6px 0;
    transition: all 0.3s ease-in-out;
}
#sitemap-container #sitemap_close span { display: block; width: 100%; height: 2px; background-color: #000; margin: 6px 0; transition: all 0.3s ease-in-out; }
#sitemap_close { display: none; }
#sitemap_close span:first-child { transform: rotate(45deg); position: absolute; top: 50%; }
#sitemap_close span:last-child { transform: rotate(-45deg); position: absolute; top: 50%; }

/* ===== [기존 스크롤 시 사이트맵 버튼 색상 변경 - 사용 중지, 주석처리] =====
#header-wrap.scrolled #sitemap span,
#header-wrap.scrolled #sitemap_close span { background-color: #333; }
================================================================= */

/* 모바일 네비게이션 스타일 */
#mobile-menu-btn { display: none;  top: 20px; right: 20px; z-index: 1003; background: none; border: none; cursor: pointer; width: 30px; height: 30px; }
#mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 3px;
    /* 항상 어두운 색 고정 */
    background-color: #333;
    margin: 5px 0;
    transition: all 0.3s ease;
}
#mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
#mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
#mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
#mobile-nav { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.9); z-index: 1002; overflow-y: auto; padding-top: 60px; }
#mobile-nav.active { display: block; }
#mobile-nav ul { list-style-type: none; padding: 0 30px; }
#mobile-nav ul ul { display: none; padding: 10px 0 10px 15px; }
#mobile-nav ul ul li > a { padding: 15px 0; color: #fff; opacity: 0.8; }
#mobile-nav ul li > a > .third-level { background-color: #333; }
#mobile-nav ul li { position: relative; }
#mobile-nav ul li > a { display: block; padding: 18px 0; color: #fff; text-decoration: none; font-size: 18px; position: relative; }
#mobile-nav > ul > li > ul > li > ul.third-level { display: block; position: static; background-color: #333; box-shadow: none; padding: 10px 0; line-height: 2.1; }
#mobile-nav > ul > li > ul > li > ul.third-level > li > a { padding: 8px 20px 8px 30px; font-size: 16px; color: #f2f2f2; opacity: 1; }

/* 3단계 메뉴 - 항상 노출 */
#mobile-nav ul.third-level-m {
    display: block;
    background-color: #373737;
    padding-left: 20px;
    margin: 0;
    list-style-type: none;
}

#mobile-nav ul.third-level-m a {
    display: block;
    padding: 13px 15px;
    font-size: 16px;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

/* 모바일 네비게이션 닫기 버튼 스타일 */
#mobile-nav-close { position: fixed; top: 20px; right: 20px; color: #fff; font-size: 30px; cursor: pointer; background: none; border: none; z-index: 1005; display: none; }
#mobile-nav.active #mobile-nav-close { display: block; }

/* 프로필 랩 스타일 */
#profileWrap { display: none; position: fixed; top: 0; left: -100%; z-index: 100; width: 100%; height: 100%; background-color: rgba(0,0,0,.6); backdrop-filter: blur(10px); }
#profileWrap .background_wrap { position: absolute; z-index: 1; width: 30%; margin: 0 auto; }
#profileWrap .background { position: absolute; left: 0; top: 0; width: 0; height: 100vh; margin-left: 0; background: url(../img/bg.jpg) left no-repeat; background-size: cover; }

/* 카테고리 스타일 */
.category { position: absolute; right: 0; top: 0; width: 0; height: 100%; background-color: #fff; }
.category > ul { position: absolute; top: 50%; transform: translateY(-50%); width: 100%; padding: 0 10%; }
.category > ul > li { opacity: 0; margin-left: 100px; padding-bottom: 20px; border-bottom: 1px solid rgba(0,0,0,.1); }
.category > ul > li + li { margin-top: 20px; }
.category > ul > li > a { display: block; width: max-content; margin-bottom: 20px; font-size: 24px; color: #333; text-decoration: none; }
.category > ul > li ul { display: flex; flex-wrap: wrap; }
.category > ul > li ul li + li { margin-left: 25px; }
.category > ul > li ul a { opacity: 0.8; font-size: 17px; color: #222; text-decoration: none; transition: all .2s; }
.category > ul > li ul a:hover { opacity: 0.7; }

/* 3단 메뉴 스타일 */
.category > ul > li ul .third-level { display: flex; flex-direction: row; margin-top: 10px; padding-left: 0; border-left: none; background-color: rgba(0,0,0,0.05); border-radius: 4px; padding: 5px;  justify-content: center; } 
.category > ul > li ul .third-level li { margin-left: 0; margin-top: 0; margin-right: 15px; } 
.category > ul > li ul .third-level li:last-child { margin-right: 0; } 
.category > ul > li ul .third-level a { font-size: 14px; opacity: 0.8; white-space: nowrap; } 
.category > ul > li ul .third-level a:hover { opacity: 1; }

/* 애니메이션 */
@keyframes fadeInUp { from { opacity: 0; transform: translate3d(0, 40px, 0); } to { opacity: 1; transform: translate3d(0, 0, 0); } }
.category > ul > li { animation: fadeInUp 0.5s ease-out forwards; }
.category > ul > li:nth-child(1) { animation-delay: .4s; }
.category > ul > li:nth-child(2) { animation-delay: .5s; }
.category > ul > li:nth-child(3) { animation-delay: .6s; }
.category > ul > li:nth-child(4) { animation-delay: .7s; }
.category > ul > li:nth-child(5) { animation-delay: .8s; }
.category > ul > li:nth-child(6) { animation-delay: .9s; }

/* 반응형 스타일 */
@media screen and (min-width: 769px) {
    #mobile-menu-btn, #mobile-nav-close { 
        display: none} 
}

@media screen and (max-width: 1300px) { 
    #pc-nav > ul > li { margin-right: 20px; } 
    #pc-nav > ul > li > a { font-size: 14px; }
}

@media screen and (max-width: 1020px) { 
    #pc-nav { display: none; }
    .header-right { display: none; } 
    #mobile-menu-btn { display: block !important} 
    #profileWrap .category_wrap { width: 100%; } 
    .category > ul { padding: 0 10%; } 
    .category > ul > li > a { font-size: 20px; } 
    .category > ul > li ul a { font-size: 14px; } 
    #header { padding: 0 20px; }
    .logo a { width: 150px; height: 40px; }
    #sitemap-container { right: 60px; }
    #mobile-nav-close { display: none  !important}
}

/* 프린트 스타일 */
@media print { 
    #header-wrap, #mobile-nav, #profileWrap { display: none !important; } 
    body { font-size: 12pt; } 
    a[href]:after { content: " (" attr(href) ")"; } 
}

/* 포커스 가시성 향상 */
a:focus-visible, button:focus-visible { outline: 2px solid #007bff; outline-offset: 2px; }

/* 키보드 네비게이션을 위한 포커스 스타일 */
#pc-nav > ul > li > a:focus + ul { visibility: visible; opacity: 1; }
/*#pc-nav > ul > li > ul > li > a:focus + ul.third-level { display: block; }*/

/* 애니메이션 리셋을 위한 스타일 */
#pc-nav > ul > li > ul.reset-animation > li { animation: none; opacity: 1; transform: translateY(0); transition: none; }

/* 스크롤바 스타일 (웹킷 기반 브라우저) */
#mobile-nav::-webkit-scrollbar { width: 5px; }
#mobile-nav::-webkit-scrollbar-track { background: #f1f1f1; }
#mobile-nav::-webkit-scrollbar-thumb { background: #888; }
#mobile-nav::-webkit-scrollbar-thumb:hover { background: #555; }

/* ===== [기존 스크롤 시 헤더 스타일 변경 전체 - 사용 중지, 주석처리] =====
#header-wrap.scrolled #pc-nav > ul > li > a { color: #333; }
#header-wrap.scrolled .logo a { background-image: url(../img/top_logo.png); }
#header-wrap.scrolled #login-box a { color: #fff; background-color: #333; }
================================================================= */

/* 로딩 인디케이터 스타일 */
#loading { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(255, 255, 255, 0.8); z-index: 9999; display: flex; justify-content: center; align-items: center; }
#loading::after { content: ""; width: 50px; height: 50px; border: 5px solid #f3f3f3; border-top: 5px solid #3498db; border-radius: 50%; animation: spin 1s linear infinite; }

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 추가적인 접근성 개선 스타일 */
.visually-hidden { position: absolute !important; height: 1px; width: 1px; overflow: hidden; clip: rect(1px 1px 1px 1px); clip: rect(1px, 1px, 1px, 1px); white-space: nowrap; }

/* 고대비 모드 지원 */
@media (forced-colors: active) {
    #header-wrap, #mobile-nav, #profileWrap { border: 1px solid currentColor; }
    .sitemap-button span, #mobile-menu-btn span { background-color: currentColor; }
}

.ib_page_title { max-width: 1200px; margin: 0 auto; padding: 0 20px; text-align: center; margin-bottom:50px;}
.ib_page_title .ib_pt_kor { font-size: 30px; font-weight: 700; color: #16213e; margin-bottom: 16px; }
.ib_page_title .ib_pt_line { width: 40px; height: 3px; background: #2f6fed; margin: 0 auto; }

.sub-inner { padding-top: 110px; }
.ib_img { width: 100%; height: 280px; overflow: hidden; margin-bottom: 40px; }
.ib_img img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* 텍스트+버튼만 한 줄로 정렬하는 wrapper (소메뉴 목록 ul.third-level은 영향 안 받고 아래로 그대로 펼쳐짐) */
.ib_menu_row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    width: 100%;
}

.ib_menu_row a {
    flex: 1;
    white-space: nowrap;
    line-height: 1.4;
    display: block;
    text-decoration: none;
}

/* PC 드롭다운 - 일반 항목(특허&인증서 등)과 좌우 여백 맞춤 */
#pc-nav .ib_menu_row { padding: 8px 20px; }
#pc-nav .ib_menu_row a { color: #fff; opacity: 0.8; font-size: 17px; padding: 0; }
#pc-nav .ib_menu_row a:hover { opacity: 1; }

/* 모바일 메뉴 - 좌우 여백 맞춤 */
#mobile-nav .ib_menu_row { padding: 0; }
#mobile-nav .ib_menu_row a { color: #fff; font-size: 18px; padding: 18px 0; }

/* + / − 버튼 스타일 - 브라우저 기본 버튼 스타일 제거 */
.ib_submenu_btn {
    flex-shrink: 0;
    background: none;
    border: none;
    color: #ddd;
    font-size: 20px;
    font-weight: 600;
    line-height: 1;
    cursor: pointer;
    padding: 0;
    margin: 0;
    width: 20px;
    text-align: center;
}
.ib_submenu_btn:hover { color: #fff; }