/* 기본 리셋 및 변수 */
:root {
    --primary-color: #4e73df;
    --primary-dark: #3a5bc7;
    --primary-color-rgb: 78, 115, 223;
    --secondary-color: #f8a100;
    --secondary-color-rgb: 248, 161, 0;
    --accent-color: #36b9cc;
    --accent-color-rgb: 54, 185, 204;
    --text-color: #333;
    --text-light: #666;
    --bg-light: #f8f9fa;
    --bg-dark: #212529;
    --border-color: #e3e6f0;
    --box-shadow: 0 0.15rem 1.75rem 0 rgba(58, 59, 69, 0.15);
    --transition: all 0.3s ease;
    --border-radius: 0.5rem;
}

/* 폰트 임포트 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+KR:wght@300;400;500;700&family=Poppins:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', 'Poppins', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: #fff;
    overflow-x: hidden;
}

/* 언어 전환 관련 스타일 */
[data-lang-en] {
    display: none;
}

body.en [data-lang-ko] {
    display: none;
}

body.en [data-lang-en] {
    display: inline-block;
}

body.en span[data-lang-en], 
body.en p[data-lang-en], 
body.en h1[data-lang-en], 
body.en h2[data-lang-en], 
body.en h3[data-lang-en] {
    display: block;
}

/* 기본 컨테이너 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* 기본 요소 스타일 */
img {
    max-width: 100%;
    height: auto;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

ul {
    list-style: none;
}

/* 버튼 스타일 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: white;
}

/* 언어 선택기 스타일 */
.language-selector {
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 100;
    display: flex;
}

.language-selector button {
    background: transparent;
    border: 1px solid var(--border-color);
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    transition: var(--transition);
}

.language-selector button:first-child {
    border-radius: var(--border-radius) 0 0 var(--border-radius);
}

.language-selector button:last-child {
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.language-selector button.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 헤더 스타일 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 1rem 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: block;
}

.nav-menu {
    display: flex;
}

.nav-menu > li {
    position: relative;
    margin-left: 1.5rem;
}

.nav-menu > li > a {
    color: var(--text-color);
    font-weight: 500;
    padding: 0.5rem 0;
    display: block;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--primary-color);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
    width: 200px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 20;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    padding: 0.5rem 1rem;
    display: block;
    color: var(--text-color);
}

.dropdown-menu li a:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
}

/* 페이지 배너 */
.page-banner {
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    color: white;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

.page-banner h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.breadcrumb {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a:hover {
    color: white;
}

.separator {
    margin: 0 0.5rem;
    color: rgba(255, 255, 255, 0.6);
}

/* FAQ 페이지 스타일 */
.faq {
    padding: 3rem 0 5rem;
}

.faq-search {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2.5rem;
    margin-bottom: 3.5rem;
    text-align: center;
}

.faq-search h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.faq-search p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.search-form {
    max-width: 600px;
    margin: 1.5rem auto 0;
    position: relative;
}

.search-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.search-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(var(--primary-color-rgb), 0.2);
    outline: none;
}

.search-btn {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 0 1.5rem;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    cursor: pointer;
    transition: var(--transition);
}

.search-btn:hover {
    background-color: var(--primary-dark);
}

.faq-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.faq-category {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.faq-category:hover, 
.faq-category.active {
    transform: translateY(-10px);
    border-color: var(--primary-color);
}

.faq-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background-color: var(--primary-color);
    opacity: 0;
    transition: var(--transition);
}

.faq-category:hover::before,
.faq-category.active::before {
    opacity: 1;
}

.faq-category i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1.25rem;
    transition: var(--transition);
}

.faq-category:hover i,
.faq-category.active i {
    transform: scale(1.1);
}

.faq-category h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    transition: var(--transition);
}

.faq-category p {
    font-size: 0.875rem;
    color: var(--text-light);
    line-height: 1.5;
}

.faq-items {
    max-width: 800px;
    margin: 0 auto 4rem;
}

.faq-item {
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    margin-bottom: 1.25rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    box-shadow: 0 0.3rem 2rem 0 rgba(58, 59, 69, 0.2);
}

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    font-size: 1.125rem;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

.faq-question i {
    color: var(--primary-color);
    transition: var(--transition);
}

.faq-item.active .faq-question {
    background-color: var(--primary-color);
    color: white;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: white;
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 1000px; /* 충분히 큰 값으로 설정 */
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
}

.more-questions {
    text-align: center;
    background-color: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    margin-top: 3rem;
}

.more-questions h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.more-questions p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* 메뉴 열린 상태일 때 body 스타일 */
body.menu-open {
    overflow: hidden;
}

/* 푸터 스타일 */
footer {
    background-color: var(--bg-dark);
    color: white;
    padding: 5rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-logo img {
    margin-bottom: 1rem;
}

.footer-logo p {
    opacity: 0.7;
}

.footer-links-column h3 {
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links-column h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-links-column ul li {
    margin-bottom: 0.75rem;
}

.footer-links-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: white;
    padding-left: 0.5rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* 애니메이션 효과 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.faq-search,
.faq-category,
.faq-item {
    animation: fadeIn 0.6s ease forwards;
}

.faq-category:nth-child(1) {
    animation-delay: 0.1s;
}

.faq-category:nth-child(2) {
    animation-delay: 0.2s;
}

.faq-category:nth-child(3) {
    animation-delay: 0.3s;
}

.faq-category:nth-child(4) {
    animation-delay: 0.4s;
}

/* 반응형 스타일 */
@media (max-width: 1200px) {
    html {
        font-size: 15px;
    }
}

@media (max-width: 992px) {
    html {
        font-size: 14px;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-logo {
        grid-column: 1 / -1;
        text-align: center;
    }
}

@media (max-width: 768px) {
    .faq-search h2 {
        font-size: 1.75rem;
    }
    
    .faq-categories {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .faq-question {
        font-size: 1rem;
        padding: 1.25rem;
    }
    
    .page-banner h1 {
        font-size: 2rem;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background-color: white;
        flex-direction: column;
        padding: 2rem;
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        z-index: 100;
        overflow-y: auto;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-menu > li {
        margin-left: 0;
        margin-bottom: 1rem;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1rem;
    }
    
    .nav-menu > li:last-child {
        border-bottom: none;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        width: 100%;
        display: none;
        padding-left: 1rem;
    }
    
    .dropdown.active .dropdown-menu {
        display: block;
    }
    
    .dropdown-menu li a {
        padding-left: 1rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    html {
        font-size: 13px;
    }
    
    .faq-categories {
        grid-template-columns: 1fr;
    }
    
    .faq-search {
        padding: 1.5rem;
    }
    
    .more-questions {
        padding: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}