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

body {
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Noto Sans KR', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1a237e; /* 남색 텍스트 */
    padding-top: 0;
}

/* 헤더 스타일 */
header {
    position: sticky;
    top: 0;
    width: 100%;
    background-color: transparent;
    color: #1a237e;
    padding: 1rem 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

header.has-scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    height: 50px;
    width: auto;
}

/* 데스크톱 네비게이션 */
.desktop-nav {
    display: block;
}

.menu-open {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1rem;
    background: transparent;
    color: #1a237e;
    border: 1px solid #1a237e;
    border-radius: 999px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

.menu-open .menu-icon {
    font-size: 1.1rem;
}

.menu-open:hover {
    background-color: #1a237e;
    color: #ffffff;
    border-color: #1a237e;
}

/* 햄버거 메뉴 버튼 */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: #1a237e;
    border-radius: 3px;
    transition: all 0.3s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* 모바일 메뉴 오버레이 */
.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mobile-menu-overlay.active {
    display: block;
    opacity: 1;
}

/* 모바일 사이드바 네비게이션 */
.mobile-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100%;
    background-color: #ffffff;
    z-index: 999;
    transition: right 0.3s ease;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
}

.mobile-nav.active {
    right: 0;
}

.mobile-nav ul {
    list-style: none;
    padding: 4rem 0 2rem 0;
    margin: 0;
}

.mobile-nav li {
    border-bottom: 1px solid #e0e0e0;
}

.mobile-nav a {
    display: block;
    padding: 1.5rem 2rem;
    color: #1a237e;
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: background-color 0.3s;
}

.mobile-nav a:hover {
    background-color: #f5f5f5;
}

/* 메인 콘텐츠 */
main {
    width: 100%;
}

.image-section {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.image-section img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

/* 데스크톱/모바일 이미지 전환 */
.pc-img {
    display: block;
}

.mob-img {
    display: none !important;
}

/* 데스크탑에서 mob 이미지 완전히 숨김 */
@media (min-width: 769px) {
    .pc-img {
        display: block !important;
    }
    
    .mob-img {
        display: none !important;
    }
}

/* 모바일에서 PC 이미지 완전히 숨김 */
@media (max-width: 768px) {
    .pc-img {
        display: none !important;
    }
    
    .mob-img {
        display: block !important;
        width: 100%;
        height: auto;
        max-width: 100%;
        object-fit: contain;
    }
    
    .image-section {
        width: 100%;
        max-width: 100%;
        overflow: visible;
        min-height: auto;
    }
    
    /* 첫 번째 섹션(h-1-m) 이미지가 잘리지 않도록 */
    #section-1 {
        overflow: visible;
        min-height: auto;
    }
    
    #section-1 .mob-img {
        width: 100%;
        height: auto;
        max-width: 100%;
        object-fit: contain;
        display: block !important;
    }
    
    /* mob 이미지가 없는 섹션(h-11, h-12) 및 h-10 섹션 숨김 */
    #section-10,
    #section-11,
    #section-12 {
        display: none;
    }
}

.hero-section {
    position: relative;
}

/* 문의폼 섹션 */
.contact-form-section {
    background-color: #f8f9fa;
    padding: 4rem 0;
}

.contact-form-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

.contact-form-container h2 {
    color: #1a237e;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
    font-weight: 700;
}

.inquiry-form {
    background-color: #ffffff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    color: #1a237e;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
    font-size: 1rem;
    color: #1a237e;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1a237e;
}

.form-group textarea {
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background-color: #1a237e;
    color: #ffffff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s;
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
}

.submit-btn:hover {
    background-color: #283593;
}

/* Top 버튼 */
.top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background-color: #1a237e;
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 999;
    transition: background-color 0.3s, transform 0.3s;
}

.top-btn:hover {
    background-color: #283593;
    transform: translateY(-3px);
}

.top-btn.show {
    display: flex;
}

/* 푸터 스타일 */
footer {
    background-color: #ffffff; /* 화이트 배경 */
    color: #1a237e; /* 남색 텍스트 */
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid #e0e0e0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* 반응형 디자인 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .logo {
        height: 40px;
    }

    .contact-form-container {
        padding: 0 1rem;
    }

    .inquiry-form {
        padding: 1.5rem;
    }

    .top-btn {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }

}