/* ===================================
   ABOUT US PAGE STYLES
   Clean, Professional, Minimal Design
=================================== */

/* SEO용 헤딩 태그 숨김 (검색엔진에는 보이지만 사용자에게는 숨김) */
.seo-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.about-container {
    min-height: 100vh;
    background: #ffffff;
    margin-top: 13.5rem;
}

/* Breadcrumb Navigation - 카테고리 페이지와 동일 */
.breadcrumb-container {
    background: #f8f9fa;
    padding: 15px 0;
    border-bottom: 1px solid #e9ecef;
}

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

.breadcrumb {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    font-size: 14px;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
}

.breadcrumb-item:not(:last-child)::after {
    content: '>';
    margin: 0 10px;
    color: #6c757d;
    font-weight: 600;
}

.breadcrumb-item a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.breadcrumb-item a:hover {
    color: #0056b3;
    text-decoration: underline;
}

.breadcrumb-item.active {
    color: #6c757d;
    font-weight: 600;
}

/* 반응형 - 카테고리 페이지와 동일 */
@media (max-width: 768px) {
    .breadcrumb-container {
        padding: 12px 0;
    }
    
    .breadcrumb-nav {
        padding: 0 15px;
    }
    
    .breadcrumb {
        font-size: 13px;
    }
    
    .breadcrumb-item:not(:last-child)::after {
        margin: 0 8px;
    }
}

@media (max-width: 480px) {
    .breadcrumb-container {
        padding: 10px 0;
    }
    
    .breadcrumb-nav {
        padding: 0 12px;
    }
    
    .breadcrumb {
        font-size: 12px;
    }
    
    .breadcrumb-item:not(:last-child)::after {
        margin: 0 6px;
    }
}

/* 페이지 헤더 */
.page-header {
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(51, 65, 85, 0.9) 100%), 
                url('../images/earth-background.jpg') center/cover no-repeat;
    color: white;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px),
        linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
    pointer-events: none;
}

.page-header .container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin: 24px 0;
    text-align: left;
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-size: 1.125rem;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.9);
    text-align: left;
    margin: 0 0 16px 0;
    font-weight: 500;
}

.container {
    margin: 0 auto;
    padding: 0 90px;
    max-width: 1200px;
}

/* 섹션 1: 메인 소개 */
.about-main-section {
    padding: 80px 0;
}

.about-content-wrapper {
    display: flex;
    gap: 80px;
    align-items: flex-start;
}

.about-image-section {
    flex: 0 0 45%;
    overflow: hidden;
    border-radius: 16px;
    height: 400px;
    max-height: 400px;
}

.about-image {
    width: 100%;
    height: 100%;
    min-height: 300px;
    max-height: 400px;
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    display: block;
}

.about-image:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.about-text-section {
    flex: 1;
}

.section-title {
    font-size: 1.875rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 32px 0;
    letter-spacing: -0.01em;
}

.content-text {
    font-size: 0.875rem;
    line-height: 1.7;
    color: #334155;
}

.content-text p {
    margin: 0 0 20px 0;
}

.content-text p:last-child {
    margin-bottom: 0;
}

.signature {
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid #e2e8f0;
}

.signature p {
    margin: 0 0 8px 0;
    font-size: 0.875rem;
    color: #64748b;
    text-align: right;
    margin-right: 1rem;
}

.signature-image-container {
    display: flex;
    justify-content: flex-end;
    margin: 12px 0 16px 0;
}

.signature-image {
    max-width: 200px;
    height: auto;
    opacity: 0.9;
    transition: opacity 0.3s ease;
    filter: grayscale(20%);
}

.signature-image:hover {
    opacity: 1;
    filter: grayscale(0%);
}

.team-name {
    font-weight: 600;
    color: #1e293b !important;
    font-size: 0.95rem !important;
}

/* 섹션 2: 3가지 특징 */
.about-features-section {
    padding: 80px 0;
    border-top: 1px solid #e2e8f0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    background: white;
    padding: 40px 32px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid #f1f5f9;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    margin-bottom: 24px;
    color: #3b82f6;
    text-align:center;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 0 20px 0;
    line-height: 1.3;
}

.feature-content {
    font-size: 0.8rem;
    line-height: 1.6;
    color: #475569;
}

.feature-content p {
    margin: 0 0 16px 0;
}

.feature-content p:last-child {
    margin-bottom: 0;
}

/* 반응형 디자인 */
@media (max-width: 1024px) {
    .about-content-wrapper {
        gap: 60px;
    }
    
    .about-image-section {
        flex: 0 0 40%;
    }
    
    .features-grid {
        gap: 30px;
    }
    
    .feature-card {
        padding: 32px 24px;
    }
}

@media (max-width: 768px) {
    .about-header {
        padding: 40px 0 30px;
    }
    
    .about-title {
        font-size: 2rem;
    }
    
    .about-main-section {
        padding: 60px 0;
    }
    
    .about-content-wrapper {
        flex-direction: column;
        gap: 40px;
    }
    
    .about-image-section {
        flex: none;
        position: static;
        overflow: hidden;
        border-radius: 16px;
        height: 300px;
        max-height: 300px;
    }
    
    .about-image {
        max-height: 300px;
        min-height: 200px;
    }
    
    .about-features-section {
        padding: 60px 0;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .feature-card {
        padding: 28px 20px;
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: 24px;
    }
        
    .about-container {
        margin-top: 7.5rem;
    }
    
    .signature-image {
        max-width: 150px;
    }
    .container {
        padding: 0 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .about-header {
        padding: 30px 0 20px;
    }
    
    .about-title {
        font-size: 1.75rem;
    }
    
    .about-main-section {
        padding: 40px 0;
    }
    
    .about-features-section {
        padding: 40px 0;
    }
    
    .feature-card {
        padding: 24px 16px;
    }
    
    .about-image-section {
        height: 250px;
        max-height: 250px;
    }
    
    .about-image {
        max-height: 250px;
        min-height: 180px;
    }
    .about-container {
        margin-top: 121px;
    }
    
    .signature-image {
        max-width: 120px;
    }
    
    .signature-image-container {
        margin: 8px 0 12px 0;
    }
    .page-title {
        font-size: 1.5rem;
    }
    
    .page-subtitle {
        font-size: 1rem;
    }
}