/* 기본 스타일 리셋 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans KR', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.section-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    color: #1a3c6e;
    position: relative;
    padding-bottom: 15px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: #e74c3c;
}

section {
    padding: 80px 0;
}

/* 버튼 스타일 */
.btn {
    display: inline-block;
    background-color: #e74c3c;
    color: white;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 헤더 스타일 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

/* 기존 코드 수정 */
.logo {
    display: flex;
    align-items: center;
}

/* 텍스트 로고를 사용하지 않을 경우 아래 스타일은 주석 처리하거나 삭제 */
/* 
.logo h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #1a3c6e;
}

.logo span {
    color: #e74c3c;
}

.logo p {
    font-size: 0.9rem;
    color: #666;
    margin-top: -5px;
}
*/
nav ul {
    display: flex;
}

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: #e74c3c;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://images.unsplash.com/photo-1541888946425-d81bb19240f5?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1470&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 150px 0;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* 회사 소개 섹션 */
.about {
    background-color: white;
}

.vision-box {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 40px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.vision-statement {
    font-size: 1.5rem;
    font-weight: 700;
    color: #e74c3c;
    margin: 15px 0;
    text-align: center;
}

.vision-box ul {
    padding-left: 20px;
}

.vision-box ul li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 20px;
}

.vision-box ul li::before {
    content: '✓';
    color: #e74c3c;
    position: absolute;
    left: 0;
}

.core-values h3, .esh-policy h3 {
    margin-bottom: 25px;
    text-align: center;
    color: #1a3c6e;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.value-item {
    text-align: center;
    padding: 25px 15px;
    background-color: #f8f9fa;
    border-radius: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.value-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.value-item h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
    color: #1a3c6e;
}

.policy-items {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.policy-item {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.policy-item h4 {
    color: #1a3c6e;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* 서비스 섹션 */
.services {
    background-color: #f8f9fa;
}

.service-category {
    margin-bottom: 50px;
}

.service-category h3 {
    text-align: center;
    margin-bottom: 30px;
    color: #1a3c6e;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.service-item {
    background-color: white;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.service-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.service-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.service-item h4 {
    font-size: 1.1rem;
    color: #1a3c6e;
}

.education-system {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.edu-item {
    background-color: white;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.edu-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.edu-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.edu-item h4 {
    font-size: 1.1rem;
    color: #1a3c6e;
    margin-bottom: 10px;
}

.patents {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.patent-item {
    background-color: white;
    padding: 30px 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.patent-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
}

.patent-item i {
    font-size: 2.5rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.patent-item h4 {
    font-size: 1.1rem;
    color: #1a3c6e;
}

/* 연혁 섹션 */
.history {
    background-color: white;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 4px;
    background-color: #e74c3c;
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -2px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
    margin-bottom: 30px;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-item::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: white;
    border: 4px solid #e74c3c;
    border-radius: 50%;
    top: 15px;
    z-index: 1;
}

.timeline-item:nth-child(odd)::after {
    right: -12px;
}

.timeline-item:nth-child(even)::after {
    left: -12px;
}

.timeline-content {
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.timeline-content h3 {
    color: #1a3c6e;
    margin-bottom: 15px;
}

.timeline-content ul li {
    margin-bottom: 8px;
}

/* 고객사 섹션 */
.clients {
    background-color: #f8f9fa;
}

.client-category {
    margin-bottom: 40px;
}

.client-category h3 {
    text-align: center;
    margin-bottom: 20px;
    color: #1a3c6e;
}

.client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}

.client-item {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.client-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.company-status {
    margin-top: 60px;
    background-color: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.company-status h3 {
    text-align: center;
    margin-bottom: 30px;
    color: #1a3c6e;
}

.status-info {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.status-item .count {
    font-size: 2.5rem;
    font-weight: 700;
    color: #e74c3c;
    text-align: center;
    margin: 20px 0;
}

.status-details h4 {
    color: #1a3c6e;
    margin-bottom: 15px;
}

.status-details ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.status-details ul li::before {
    content: '•';
    color: #e74c3c;
    position: absolute;
    left: 0;
    font-size: 1.2rem;
}

.credit-rating {
    text-align: center;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.credit-rating strong {
    color: #e74c3c;
    font-size: 1.2rem;
}

/* 연락처 섹션 */
.contact {
    background-color: white;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 50px;
}

.office {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.office h3 {
    color: #1a3c6e;
    margin-bottom: 20px;
}

.office p {
    margin-bottom: 10px;
}

.office i {
    color: #e74c3c;
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

.contact-form {
    background-color: #f8f9fa;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.contact-form h3 {
    color: #1a3c6e;
    margin-bottom: 20px;
    text-align: center;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
    font-size: 1rem;
}

.form-group textarea {
    height: 150px;
    resize: vertical;
}

.contact-form .btn {
    width: 100%;
}

/* 푸터 */
footer {
    background-color: #1a3c6e;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 30px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.footer-logo span {
    color: #e74c3c;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a:hover {
    color: #e74c3c;
}

.footer-contact p {
    margin-bottom: 10px;
}

.footer-contact i {
    margin-right: 10px;
    color: #e74c3c;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
}

/* 반응형 스타일 */
@media (max-width: 992px) {
    .values-grid,
    .policy-items,
    .services-grid,
    .education-system {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .status-info {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }
    
    .timeline-item:nth-child(even) {
        left: 0;
    }
    
    .timeline::after {
        left: 31px;
    }
    
    .timeline-item::after {
        left: 20px;
    }
    
    .timeline-item:nth-child(odd)::after {
        right: auto;
        left: 20px;
    }
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .values-grid,
    .policy-items,
    .services-grid,
    .education-system,
    .patents,
    .contact-info,
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero h2 {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .client-grid {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: 100px 0;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
}
/* 로고 이미지 스타일 */
.logo-image {
    max-height: 60px; /* 로고 높이 조절 */
    width: auto;
    display: block;
}