/* ========================================
   About Page - Section 1
======================================== */

.about_section1 {
    position: relative;
    width: 100%;
    min-height: 550px;
    background-image: url('../images/about/main_bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding: 100px 0;
}

.about_section1_container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0;
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    height: 100%;
}

.about_section1_content {
    text-align: left;
    color: #FFFFFF;
    padding-bottom: 30px;
}

.about_section1_text1 {
    font-family: 'Paperozi', sans-serif;
    font-size: 52px;
    font-weight: 700;
    color: #FFFFFF;
    margin: 0;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.about_section1_text2 {
    font-family: 'Paperozi', sans-serif;
    font-size: 52px;
    font-weight: 700;
    color: #FFFFFF;
    margin: 0;
    line-height: 1.2;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

/* 모바일 줄바꿈 숨김 (데스크탑) */
.about_section1_text1 .mobile_br,
.about_section1_text2 .mobile_br {
    display: none;
}

/* 태블릿 (768px ~ 1199px) */
@media (max-width: 1199px) and (min-width: 768px) {
    .about_section1 {
        min-height: 500px;
        padding: 80px 0;
    }
    
    .about_section1_container {
        padding: 0 30px;
    }
    
    .about_section1_content {
        padding-bottom: 50px;
    }
    
    .about_section1_text1 {
        font-family: 'Paperozi', sans-serif;
        font-size: 42px;
        font-weight: 700;
    }
    
    .about_section1_text2 {
        font-family: 'Paperozi', sans-serif;
        font-size: 42px;
        font-weight: 700;
    }
}

/* 모바일 (480px ~ 767px) */
@media (max-width: 767px) and (min-width: 480px) {
    .about_section1 {
        min-height: 400px;
        padding: 60px 0 20px 0;
    }
    
    .about_section1_container {
        padding: 0 20px;
    }
    
    .about_section1_content {
        padding-bottom: 40px;
        margin-top: auto;
    }
    
    .about_section1_text1 {
        font-family: 'Paperozi', sans-serif;
        font-size: 38px;
        font-weight: 700;
        margin-bottom: 0;
    }
    
    .about_section1_text1 .mobile_br,
    .about_section1_text2 .mobile_br {
        display: block;
    }
    
    .about_section1_text2 {
        font-family: 'Paperozi', sans-serif;
        font-size: 38px;
        font-weight: 700;
    }
}

/* 작은 모바일 (480px 이하) */
@media (max-width: 479px) {
    .about_section1 {
        min-height: 360px;
        padding: 50px 0 15px 0;
    }
    
    .about_section1_container {
        padding: 0 15px;
    }
    
    .about_section1_content {
        padding-bottom: 30px;
        margin-top: auto;
    }
    
    .about_section1_text1 {
        font-family: 'Paperozi', sans-serif;
        font-size: 38px;
        font-weight: 700;
        margin-bottom: 0;
    }
    
    .about_section1_text1 .mobile_br,
    .about_section1_text2 .mobile_br {
        display: block;
    }
    
    .about_section1_text2 {
        font-family: 'Paperozi', sans-serif;
        font-size: 38px;
        font-weight: 700;
    }
}

/* ========================================
   About Page - Section 2 (YouTube Videos)
======================================== */

.about_section2 {
    width: 100%;
    padding: 100px 0;
    background-color: #FFFFFF;
    overflow: visible;
}

.about_section2_container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 60px;
    position: relative;
    overflow: visible;
}

.about_section2_main_title {
    font-family: 'Paperozi', sans-serif;
    font-size: 40px;
    font-weight: 400;
    color: #333333;
    text-align: center;
    margin-bottom: 50px;
    line-height: 1.2;
}

.about_section2_title {
    font-size: 28px;
    font-weight: 700;
    color: #333;
    text-align: left;
    margin-bottom: 20px;
    font-family: 'Noto Sans KR', sans-serif;
}

.about_section2_slider_wrapper {
    position: relative;
    width: 100%;
}

.about_section2_swiper {
    position: relative;
    padding: 0;
    overflow: visible;
    width: 100%;
}

.youtube_video_card {
    display: block;
    text-decoration: none;
    color: inherit;
}

.youtube_video_thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 비율 */
    overflow: hidden;
    border-radius: 8px;
    background-color: #000;
    margin-bottom: 10px;
}

.youtube_video_thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.youtube_play_icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.youtube_video_info {
    padding: 0 10px;
}

.youtube_video_title {
    font-size: 18px;
    font-weight: normal;
    color: #333;
    line-height: 1.5;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Swiper 네비게이션 버튼 */
.about_section2_slider_wrapper .about_section2_next,
.about_section2_slider_wrapper .about_section2_prev {
    width: 44px;
    height: 44px;
    background-color: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 50%;
    box-shadow: none;
    transition: all 0.3s ease;
    margin-top: 0;
    z-index: 10;
    display: flex !important;
    align-items: center;
    justify-content: center;
    opacity: 1 !important;
    visibility: visible !important;
    cursor: pointer;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
}

.about_section2_slider_wrapper .about_section2_next {
    right: -50px;
}

.about_section2_slider_wrapper .about_section2_prev {
    left: -50px;
}

.about_section2_slider_wrapper .about_section2_next:hover,
.about_section2_slider_wrapper .about_section2_prev:hover {
    background-color: #fff;
    box-shadow: none;
}

.about_section2_slider_wrapper .about_section2_next::after,
.about_section2_slider_wrapper .about_section2_prev::after {
    font-size: 18px;
    font-weight: 700;
    color: #333;
    display: block;
}

.about_section2_slider_wrapper .about_section2_next.swiper-button-disabled,
.about_section2_slider_wrapper .about_section2_prev.swiper-button-disabled {
    opacity: 0.5 !important;
    cursor: not-allowed;
}

/* 태블릿 (768px ~ 1199px) */
@media (max-width: 1199px) and (min-width: 768px) {
    .about_section2 {
        padding: 60px 0;
    }
    
    .about_section2_container {
        padding: 0 50px;
    }
    
    .about_section2_main_title {
        font-size: 35px;
    }
    
    .about_section2_slider_wrapper .about_section2_next {
        right: -40px;
    }
    
    .about_section2_slider_wrapper .about_section2_prev {
        left: -40px;
    }
    
    .about_section2_title {
        font-size: 28px;
        margin-bottom: 20px;
    }
    
    .about_section2_swiper {
        padding: 0;
    }
    
    .youtube_video_title {
        font-size: 16px;
    }
}

/* 모바일 (480px ~ 767px) */
@media (max-width: 767px) and (min-width: 480px) {
    .about_section2 {
        padding: 80px 0;
    }
    
    .about_section2_container {
        padding: 0 20px;
    }
    
    .about_section2_main_title {
        font-size: 30px;
    }
    
    .about_section2_title {
        font-size: 24px;
        margin-bottom: 15px;
    }
    
    .about_section2_swiper {
        padding: 0 50px;
    }
    
    .youtube_video_title {
        font-size: 15px;
    }
    
    .about_section2_slider_wrapper .about_section2_next,
    .about_section2_slider_wrapper .about_section2_prev {
        width: 36px;
        height: 36px;
    }
    
    .about_section2_slider_wrapper .about_section2_next::after,
    .about_section2_slider_wrapper .about_section2_prev::after {
        font-size: 14px;
    }
    
    .about_section2_slider_wrapper .about_section2_next {
        right: 0;
    }
    
    .about_section2_slider_wrapper .about_section2_prev {
        left: 0;
    }
}

/* 작은 모바일 (480px 이하) */
@media (max-width: 479px) {
    .about_section2 {
        padding: 60px 0;
    }
    
    .about_section2_container {
        padding: 0 15px;
    }
    
    .about_section2_main_title {
        font-size: 30px;
        margin-bottom: 30px;
    }
    
    .about_section2_title {
        font-size: 21px;
        font-weight: 700;
        margin-bottom: 15px;
    }
    
    .about_section2_swiper {
        padding: 0 45px;
    }
    
    .youtube_video_title {
        font-size: 13px;
    }
    
    .about_section2_slider_wrapper .about_section2_next,
    .about_section2_slider_wrapper .about_section2_prev {
        width: 32px;
        height: 32px;
    }
    
    .about_section2_slider_wrapper .about_section2_next::after,
    .about_section2_slider_wrapper .about_section2_prev::after {
        font-size: 12px;
    }
    
    .about_section2_slider_wrapper .about_section2_next {
        right: 0;
    }
    
    .about_section2_slider_wrapper .about_section2_prev {
        left: 0;
    }
}

/* ========================================
   About Page - Section 2 Organization
======================================== */

.about_section2_organization {
    width: 100%;
    margin-top: 80px;
    padding: 0;
}

.about_section2_organization_container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.organization_department {
    border-top: none;
    padding-top: 0;
}

.department_title {
    font-size: 28px;
    font-weight: 700;
    color: #B8860B;
    margin: 0 0 20px 0;
    font-family: 'Noto Sans KR', sans-serif;
}

.department_description {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin: 0 0 20px 0;
    font-family: 'Noto Sans KR', sans-serif;
}

.department_members {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 60px 30px;
}

.member_item {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
    border-top: 1px solid #121212;
    padding-top: 10px;
    padding-bottom: 15px;
    margin-top: 10px;
    margin-bottom: 0;
}

.member_name {
    font-size: 28px;
    font-weight: 700;
    color: #333;
    font-family: 'Noto Sans KR', sans-serif;
    white-space: nowrap;
}

.member_position {
    font-size: 22px;
    font-weight: 400;
    color: #333;
    font-family: 'Noto Sans KR', sans-serif;
    white-space: nowrap;
}

/* 태블릿 (768px ~ 1199px) */
@media (max-width: 1199px) and (min-width: 768px) {
    .about_section2_organization {
        margin-top: 60px;
    }
    
    .about_section2_organization_container {
        gap: 30px;
        padding: 0 20px;
    }
    
    .department_title {
        font-size: 26px;
        font-weight: 700;
        margin-bottom: 18px;
    }
    
    .department_members {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px 18px;
    }
    
    .member_name {
        font-size: 25px;
        font-weight: 700;
    }
    
    .member_position {
        font-size: 22px;
    }
}

/* 모바일 (480px ~ 767px) */
@media (max-width: 767px) and (min-width: 480px) {
    .about_section2_organization {
        margin-top: 50px;
    }
    
    .about_section2_organization_container {
        gap: 25px;
        padding: 0 15px;
    }
    
    .department_title {
        font-size: 25px;
        font-weight: 700;
        margin-bottom: 15px;
    }
    
    .department_members {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px 15px;
    }
    
    .member_name {
        font-size: 23px;
        font-weight: 700;
    }
    
    .member_position {
        font-size: 19px;
    }
}

/* 작은 모바일 (480px 이하) - Organization */
@media (max-width: 479px) {
    .about_section2_organization {
        margin-top: 40px;
    }
    
    .about_section2_organization_container {
        gap: 20px;
        padding: 0 15px;
    }
    
    .department_title {
        font-size: 24px;
        font-weight: 700;
        margin-bottom: 12px;
    }
    
    .department_members {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px 12px;
    }
    
    .member_name {
        font-size: 21px;
        font-weight: 700;
    }
    
    .member_position {
        font-size: 16px;
    }
}