/* ========================================
   Global Styles & Variables
   ======================================== */
:root {
    /* Color Palette - 연구소 로고 컬러 (밝고 선명하게 조정) */
    --primary-orange: #FF9500;
    --primary-blue: #2B5FA5;
    --dark-blue: #1a3d6d;
    --light-orange: #FFA726;
    --light-blue: #5B8DD8;
    
    /* Neutral Colors */
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --gray: #6C757D;
    --dark-gray: #343A40;
    --black: #000000;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-orange) 0%, var(--light-orange) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--primary-blue) 0%, var(--light-blue) 100%);
    --gradient-mixed: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-orange) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --section-padding: 100px 0;
    --container-max-width: 1200px;
}

/* ========================================
   Reset & Base Styles
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Noto Sans KR', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 30px;
}

.section {
    padding: var(--section-padding);
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--dark-gray);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 10px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 4px;
    background: var(--gradient-mixed);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    margin-top: 20px;
}

.section-note {
    font-size: 0.9rem;
    color: var(--gray);
    margin-top: 10px;
    font-style: italic;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

/* ========================================
   Navigation (Apple-style)
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo img {
    height: 70px;
    transition: transform var(--transition-normal);
    background: transparent;
    mix-blend-mode: multiply;
}

.logo img:hover {
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 35px;
    align-items: center;
}

.nav-item-dropdown {
    position: relative;
}

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

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: 10px;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    min-width: 120px;
    padding: 5px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
    z-index: 100;
    list-style: none;
}

.dropdown-link {
    display: block;
    padding: 8px 16px;
    color: #1d1d1f;
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 400;
    transition: all 0.2s ease;
}

.dropdown-link:hover {
    color: var(--primary-orange);
    background: rgba(255, 149, 0, 0.08);
}

.nav-link {
    text-decoration: none;
    color: #1d1d1f;
    font-weight: 400;
    font-size: 0.875rem;
    position: relative;
    transition: color 0.2s ease;
    letter-spacing: -0.01em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary-orange);
    transition: width 0.3s cubic-bezier(0.28, 0.11, 0.32, 1);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-orange);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark-gray);
    transition: all var(--transition-fast);
}

/* ========================================
   Page Header (for sub-pages)
   ======================================== */
.page-header {
    padding: 150px 0 80px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    text-align: center;
    color: var(--white);
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 15px;
}

.page-header p {
    font-size: 1.3rem;
    opacity: 0.9;
    font-weight: 300;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    height: 100vh;
    min-height: 600px;
    background: linear-gradient(135deg, #0a1f44 0%, #1e3a5f 50%, #2B5FA5 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 149, 0, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(43, 95, 165, 0.15) 0%, transparent 50%);
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.2);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 20px;
    letter-spacing: -0.03em;
    line-height: 1.1;
    color: var(--white);
}

.university-name {
    color: #0066CC;
    font-weight: 700;
}

.highlight {
    background: linear-gradient(135deg, #FF9500 0%, #FFA726 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 15px;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-indicator i {
    font-size: 2rem;
    color: var(--white);
    opacity: 0.7;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, #FF9500 0%, #FFA726 100%);
    color: var(--white);
    box-shadow: 0 4px 12px rgba(255, 149, 0, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 6px 20px rgba(255, 149, 0, 0.4);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px) scale(1.02);
}

.btn-learn-more {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    padding: 16px 40px;
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 20px;
}

.btn-learn-more:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.7);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.btn-learn-more i {
    transition: transform 0.3s ease;
    margin-left: 4px;
}

.btn-learn-more:hover i {
    transform: translateX(5px);
}

/* ========================================
   Overview Section (Home Page)
   ======================================== */
.overview-section {
    background: var(--white);
    padding: 80px 0;
}

.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.overview-card {
    background: var(--white);
    padding: 50px 35px;
    border-radius: 24px;
    text-decoration: none;
    color: inherit;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.overview-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.05) 0%, rgba(43, 95, 165, 0.05) 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.overview-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-orange);
}

.overview-card:hover::before {
    opacity: 1;
}

.overview-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--light-orange) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    color: var(--white);
    margin-bottom: 25px;
    transition: all 0.4s ease;
}

.overview-card:hover .overview-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 10px 30px rgba(255, 149, 0, 0.4);
}

.overview-card h3 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #1d1d1f;
    position: relative;
    z-index: 1;
}

.overview-card p {
    font-size: 1.05rem;
    color: #86868b;
    line-height: 1.6;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.overview-card .arrow {
    color: var(--primary-orange);
    font-size: 1.3rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
}

.overview-card:hover .arrow {
    opacity: 1;
    transform: translateX(0);
}

/* ========================================
   Vision Section
   ======================================== */
.vision-section {
    background: var(--light-gray);
}

.vision-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.vision-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.vision-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-mixed);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.vision-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.vision-card:hover::before {
    transform: scaleX(1);
}

.vision-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--gradient-mixed);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    transition: all var(--transition-normal);
}

.vision-card:hover .vision-icon {
    transform: rotateY(360deg);
}

.vision-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--dark-gray);
}

.vision-card p {
    color: var(--gray);
    line-height: 1.7;
}

.vision-statement {
    margin-top: 50px;
    text-align: center;
}

.vision-statement p {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--dark-blue);
    line-height: 1.8;
    padding: 30px 40px;
    background: linear-gradient(135deg, rgba(255, 149, 0, 0.05) 0%, rgba(43, 95, 165, 0.05) 100%);
    border-radius: 15px;
    border-left: 5px solid var(--primary-orange);
    box-shadow: var(--shadow-sm);
    position: relative;
    font-style: normal;
    max-width: 900px;
    margin: 0 auto;
}

/* ========================================
   Organization Section
   ======================================== */
.organization-section {
    background: var(--white);
}

.org-chart {
    max-width: 900px;
    margin: 0 auto;
}

.org-level {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin: 30px 0;
}

.org-box {
    background: var(--white);
    border: 2px solid var(--primary-blue);
    border-radius: 15px;
    padding: 25px 30px;
    min-width: 180px;
    text-align: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.org-box.director {
    background: var(--gradient-secondary);
    color: var(--white);
    border: none;
    transform: scale(1.1);
}

.org-box:not(.director):hover {
    background: var(--light-gray);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-orange);
}

.org-box h4 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.org-box.director h4 {
    color: var(--white);
}

.org-box p {
    font-size: 0.9rem;
    color: var(--gray);
}

.org-box.director p {
    color: rgba(255, 255, 255, 0.9);
}

.org-connector {
    width: 2px;
    height: 40px;
    background: var(--primary-blue);
    margin: 0 auto;
    position: relative;
}

.org-connector::before,
.org-connector::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 2px;
    background: var(--primary-blue);
    top: 50%;
}

.org-connector::before {
    left: -100px;
}

.org-connector::after {
    right: -100px;
}

.org-connector-vertical {
    width: 2px;
    height: 40px;
    background: var(--primary-blue);
    margin: 0 auto;
    position: relative;
}

.org-connector-vertical::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 2px;
    background: var(--primary-blue);
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

/* ========================================
   Advisors Section
   ======================================== */
.advisors-section {
    background: var(--light-gray);
}

.advisors-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.advisor-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    flex-direction: column;
}

.advisor-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.advisor-photo {
    width: 100%;
    aspect-ratio: 3 / 4; /* 증명사진 비율 (3:4) */
    background: var(--gradient-mixed);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--white);
    overflow: hidden;
}

.advisor-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 증명사진처럼 꽉 채우기 */
    object-position: center top; /* 상단 중앙 정렬로 얼굴 강조 */
}

.advisor-info {
    padding: 30px;
    text-align: center;
}

.advisor-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 8px;
}

.advisor-title {
    font-size: 1.1rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 10px;
}

.advisor-affiliation {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.advisor-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 25px;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.advisor-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.advisor-link i {
    font-size: 0.9rem;
}

/* ========================================
   Members Section
   ======================================== */
.members-section {
    background: var(--light-gray);
}

.alumni-section {
    background: var(--white);
}

.members-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.members-top-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    max-width: 600px;
    margin: 0 auto;
}

.members-bottom-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
}

.alumni-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.alumni-top-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
    max-width: 1200px;
    margin: 0 auto;
}

.alumni-bottom-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    max-width: 600px;
    margin: 0 auto;
}

.member-card {
    background: var(--white);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.member-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.member-photo {
    width: 100%;
    height: 280px; /* 360px에서 280px로 축소 (4:3 비율 유지) */
    background: var(--gradient-mixed);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem; /* 4rem에서 3.5rem로 축소 */
    color: var(--white);
    overflow: hidden; /* 배경이 보이지 않도록 */
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* 이미지가 영역을 완전히 덮도록 */
    object-position: center; /* 중앙 정렬 */
    transform: scale(1.1); /* 10% 확대하여 배경 라인 제거 */
}

/* 김태형 사진 위치 조정 (머리가 잘리지 않도록 위로) */
.member-card[data-member-name="김태형"] .member-photo img {
    object-position: center 20%; /* 세로 위치를 20%로 조정 (위로) */
    transform: scale(1.0); /* 확대 비율 줄임 */
}

/* 박민영 사진 위치 조정 (머리가 잘리지 않도록 위로) */
.member-card[data-member-name="박민영"] .member-photo img {
    object-position: center 20%; /* 세로 위치를 20%로 조정 (위로) */
    transform: scale(1.0); /* 확대 비율 줄임 */
}

/* 서예준 사진 위치 조정 (머리가 잘리지 않도록 위로) */
.member-card[data-member-name="서예준"] .member-photo img {
    object-position: center 20%; /* 세로 위치를 20%로 조정 (위로) */
    transform: scale(1.0); /* 확대 비율 줄임 */
}

.member-info {
    padding: 20px; /* 25px에서 20px로 축소 */
}

.member-name {
    font-size: 1.3rem; /* 1.4rem에서 1.3rem로 축소 */
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 8px;
}

.member-position {
    font-size: 1rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 5px;
}

.member-team {
    font-size: 0.9rem;
    color: var(--gray);
    font-weight: 400;
    font-style: normal;
    margin-bottom: 5px;
}

.member-department {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 15px;
}

.member-contact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--gray);
}

.member-contact i {
    color: var(--primary-orange);
    margin-right: 8px;
    width: 16px;
}

.cv-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    padding: 10px 20px;
    background: var(--gradient-primary);
    color: var(--white);
    border-radius: 25px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.cv-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.cv-download-btn i {
    font-size: 0.85rem;
}

/* 멤버 액션 버튼 컨테이너 */
.member-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    flex-wrap: wrap;
}

/* 통일된 멤버 액션 버튼 스타일 */
.member-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-blue) 100%);
    color: var(--white);
    border-radius: 25px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    flex: 1;
    min-width: 130px;
    justify-content: center;
}

.member-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, var(--light-orange) 0%, var(--light-blue) 100%);
}

.member-action-btn i {
    font-size: 0.85rem;
}

.alumni-card {
    opacity: 1;
}

.alumni-card:hover {
    opacity: 1;
}

.alumni-card .member-photo {
    background: linear-gradient(135deg, #6C757D 0%, #495057 100%);
}

.alumni-card .member-photo img {
    object-fit: cover;
    transform: scale(1.1);
}

/* 프로필 사진이 있는 동문 - 흰 배경으로 로고 표시 */
.alumni-card[data-alumni-name="박태경"] .member-photo,
.alumni-card[data-alumni-name="김시내"] .member-photo,
.alumni-card[data-alumni-name="김민석"] .member-photo,
.alumni-card[data-alumni-name="김나연"] .member-photo,
.alumni-card[data-alumni-name="박지현"] .member-photo,
.alumni-card[data-alumni-name="곽호석"] .member-photo {
    background: white;
}

.alumni-card[data-alumni-name="박태경"] .member-photo img,
.alumni-card[data-alumni-name="김시내"] .member-photo img {
    object-fit: contain;
    transform: scale(0.95);
    padding: 30px;
    background: transparent;
}

/* 김민석 - Temple 로고 */
.alumni-card[data-alumni-name="김민석"] .member-photo img {
    object-fit: contain;
    transform: scale(0.6);
    padding: 30px;
    background: transparent;
}

/* 김나연 - 연세대 로고 (더 크게) */
.alumni-card[data-alumni-name="김나연"] .member-photo img {
    object-fit: contain;
    transform: scale(0.85);
    padding: 30px;
    background: transparent;
}

/* 박지현, 곽호석 - 연세대 로고 */
.alumni-card[data-alumni-name="박지현"] .member-photo img,
.alumni-card[data-alumni-name="곽호석"] .member-photo img {
    object-fit: contain;
    transform: scale(0.75);
    padding: 30px;
    background: transparent;
}

/* ========================================
   Research Section
   ======================================== */
.research-section {
    background: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}

.stat-card {
    background: var(--white);
    padding: 35px;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 25px;
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-orange);
}

.stat-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-mixed);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
    flex-shrink: 0;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark-gray);
    margin-bottom: 5px;
}

.stat-content p {
    color: var(--gray);
    font-size: 1rem;
}

/* Research Publications */
.research-publications {
    background: var(--light-gray);
    padding: 50px;
    border-radius: 20px;
}

.publications-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 20px;
}

.publications-header h3 {
    font-size: 1.8rem;
    color: var(--dark-gray);
}

.filter-buttons {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    background: var(--white);
    color: var(--gray);
    border: 2px solid transparent;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
}

.filter-btn.active {
    background: var(--gradient-mixed);
    color: var(--white);
    border-color: transparent;
}

.publications-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.publication-item {
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-blue);
}

.publication-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-md);
    border-left-color: var(--primary-orange);
}

.publication-type {
    display: inline-block;
    padding: 5px 15px;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.publication-item.conference .publication-type {
    background: var(--primary-orange);
}

.publication-item.project .publication-type {
    background: var(--gradient-mixed);
}

.publication-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.publication-title-link {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.publication-title-link:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.publication-authors {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.publication-details {
    color: var(--gray);
    font-size: 0.9rem;
    font-style: italic;
}

/* ========================================
   Journal Publications Section
   ======================================== */
.journal-section {
    background: var(--white);
}

.journal-list {
    max-width: 900px;
    margin: 0 auto;
}

.journal-item {
    display: flex;
    gap: 30px;
    background: var(--light-gray);
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 5px solid var(--primary-blue);
}

.journal-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-orange);
}

.journal-year {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: var(--gradient-mixed);
    color: var(--white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
}

.journal-content {
    flex: 1;
}

.journal-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
    line-height: 1.4;
}

.journal-title-link {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.journal-title-link:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.journal-authors {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.journal-name {
    color: var(--gray);
    font-style: italic;
    display: flex;
    align-items: center;
    gap: 8px;
}

.journal-name i {
    color: var(--primary-orange);
}

.journal-description {
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 8px;
    font-style: italic;
}

/* ========================================
   Research Projects Section
   ======================================== */
.projects-section {
    background: var(--light-gray);
}

.projects-list {
    max-width: 900px;
    margin: 0 auto;
}

.project-item {
    display: flex;
    gap: 30px;
    background: var(--light-gray);
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 5px solid var(--primary-orange);
}

.project-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-blue);
}

.project-year {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    color: var(--white);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
    text-align: center;
    padding: 5px;
    overflow: hidden;
}

.project-year-logo {
    background: var(--white);
    padding: 10px;
}

.project-year-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.project-content {
    flex: 1;
}

.project-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
    line-height: 1.4;
}

.project-title-link {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.project-title-link:hover {
    color: var(--primary-orange);
    text-decoration: underline;
}

.project-authors {
    color: var(--primary-orange);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.project-description {
    color: var(--gray);
    line-height: 1.6;
}

/* ========================================
   Conference Presentations Section
   ======================================== */
.conferences-section {
    background: var(--light-gray);
}

.conferences-list {
    max-width: 900px;
    margin: 0 auto;
}

.conference-item {
    display: flex;
    gap: 30px;
    background: var(--white);
    padding: 30px;
    margin-bottom: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border-left: 5px solid var(--primary-blue);
}

.conference-item:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
    border-left-color: var(--primary-orange);
}

.conference-year {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: white;
    border: 2px solid var(--primary-blue);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.conference-logo {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: white;
    border: 2px solid var(--primary-blue);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.conference-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.conference-content {
    flex: 1;
}

.conference-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
    line-height: 1.4;
}

.conference-title-link {
    color: var(--dark-gray);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.conference-title-link:hover {
    color: var(--primary-blue);
    text-decoration: underline;
}

.conference-authors {
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 1.05rem;
}

.conference-name {
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 8px;
}

.conference-name i {
    color: var(--primary-orange);
}

.conference-image {
    margin-top: 15px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.conference-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-normal);
}

.conference-image img:hover {
    transform: scale(1.02);
}

/* Year divider for conferences */
.conference-year-divider {
    position: relative;
    margin: 50px 0;
    text-align: center;
}

.conference-year-divider::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--primary-blue), transparent);
    transform: translateY(-50%);
}

.conference-year-divider span {
    position: relative;
    display: inline-block;
    background: var(--light-gray);
    padding: 10px 30px;
    color: var(--primary-blue);
    font-weight: 700;
    font-size: 1.3rem;
    border-radius: 30px;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

/* ========================================
   Achievements Section
   ======================================== */
.achievements-section {
    background: var(--white);
}

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

.achievements-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--gradient-mixed);
    transform: translateX(-50%);
}

.achievement-item {
    margin-bottom: 50px;
    position: relative;
}

.achievement-item:nth-child(odd) .achievement-content {
    margin-left: auto;
    text-align: left;
}

.achievement-item:nth-child(even) .achievement-content {
    margin-right: auto;
    text-align: right;
}

.achievement-content {
    width: calc(50% - 40px);
    background: var(--white);
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
}

.achievement-content:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg);
}

.achievement-date {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-mixed);
    color: var(--white);
    border-radius: 20px;
    font-weight: 600;
    margin-bottom: 15px;
}

.achievement-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.achievement-description {
    color: var(--gray);
    line-height: 1.7;
}

.achievement-icon {
    position: absolute;
    left: 50%;
    top: 30px;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--white);
    box-shadow: var(--shadow-md);
    z-index: 2;
}

/* ========================================
   Gallery Section
   ======================================== */
.gallery-section {
    background: var(--white);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.gallery-item {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-xl);
}

.gallery-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-slow);
}

.gallery-item:hover .gallery-image {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    opacity: 0;
    transition: opacity var(--transition-normal);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 25px;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-title {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.gallery-description {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 10px;
}

.lightbox-close {
    position: absolute;
    top: 30px;
    right: 40px;
    font-size: 3rem;
    color: var(--white);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.lightbox-close:hover {
    color: var(--primary-orange);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: var(--primary-orange);
}

.lightbox-prev {
    left: 30px;
}

.lightbox-next {
    right: 30px;
}

.lightbox-caption {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    font-size: 1.1rem;
    text-align: center;
    max-width: 80%;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    background: var(--light-gray);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 50px;
    align-items: start;
}

.contact-info {
    background: var(--gradient-secondary);
    padding: 50px;
    border-radius: 20px;
    color: var(--white);
}

.contact-info h3 {
    font-size: 2rem;
    color: var(--white);
    margin-bottom: 30px;
}

.info-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--primary-orange);
    flex-shrink: 0;
    width: 30px;
}

.info-item h4 {
    font-size: 1.1rem;
    color: var(--white);
    margin-bottom: 5px;
}

.info-item p {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 40px;
}

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-orange);
    transform: translateY(-3px);
}

/* Contact Form */
.contact-form {
    background: var(--white);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.contact-form h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: var(--dark-gray);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.required {
    color: var(--primary-orange);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #E0E0E0;
    border-radius: 10px;
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(43, 95, 165, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    display: none;
    animation: slideDown 0.3s ease;
}

.form-message.success {
    display: block;
    background: #D4EDDA;
    color: #155724;
    border: 1px solid #C3E6CB;
}

.form-message.error {
    display: block;
    background: #F8D7DA;
    color: #721C24;
    border: 1px solid #F5C6CB;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   CTA Section
   ======================================== */
.cta-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    padding: 100px 0;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    color: var(--white);
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--white);
    margin-bottom: 20px;
}

.cta-content p {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--dark-gray);
    color: var(--white);
    padding: 50px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-logo img {
    height: 60px;
    margin-bottom: 15px;
    filter: brightness(0) invert(1);
}

.footer-logo p {
    font-size: 1.1rem;
    opacity: 0.9;
}

.footer-info p {
    opacity: 0.8;
    margin-bottom: 5px;
}

/* ========================================
   Utilities
   ======================================== */
.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray);
}

.loading i {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 20px;
}

.loading p {
    font-size: 1.1rem;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-mixed);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 90px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 90px);
        background: var(--white);
        flex-direction: column;
        padding: 50px 0;
        box-shadow: var(--shadow-lg);
        transition: left var(--transition-normal);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(7px, 7px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
    }
    
    .achievements-timeline::before {
        left: 30px;
    }
    
    .achievement-content {
        width: calc(100% - 80px);
        margin-left: 80px !important;
        text-align: left !important;
    }
    
    .achievement-icon {
        left: 30px;
        transform: translateX(0);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Director Page Styles
   ======================================== */
.director-profile-section {
    background: var(--white);
}

.director-profile {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 50px;
    align-items: start;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
}

.director-photo-large {
    width: 100%;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.director-photo-large img {
    width: 100%;
    height: auto;
    display: block;
}

.director-info-large {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.director-name {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dark-gray);
    margin-bottom: 5px;
}

.director-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-orange);
    margin-bottom: 5px;
}

.director-department {
    font-size: 1.1rem;
    color: var(--gray);
    margin-bottom: 20px;
}

.director-contact-large {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.director-contact-large .contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px 20px;
    background: white;
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.director-contact-large .contact-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.director-contact-large .contact-item i {
    color: var(--primary-orange);
    font-size: 1.3rem;
    width: 25px;
    text-align: center;
}

.director-contact-large .contact-item span {
    color: var(--dark-gray);
    font-size: 1rem;
}

.director-section {
    padding: 80px 0;
}

/* Timeline Styles */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding-left: 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--primary-orange), var(--primary-blue));
}

.timeline-item {
    position: relative;
    margin-bottom: 40px;
    padding-left: 40px;
}

.timeline-icon {
    position: absolute;
    left: 0;
    top: 0;
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: var(--shadow-md);
    z-index: 1;
}

.timeline-content {
    background: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.timeline-content h4 {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.timeline-institution {
    font-size: 1rem;
    color: var(--primary-blue);
    font-weight: 600;
    margin-bottom: 5px;
}

.timeline-date {
    font-size: 0.9rem;
    color: var(--gray);
}

/* Publications List */
.publications-list {
    max-width: 1000px;
    margin: 0 auto;
}

.director-publication-item {
    display: block;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-orange);
}

.director-publication-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.publication-year {
    display: none;
}

.publication-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.publication-title {
    font-size: 1.2rem;
    color: var(--dark-gray);
    font-weight: 700;
    line-height: 1.4;
}

.publication-link {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.publication-link:hover {
    color: var(--primary-orange);
}

.publication-authors {
    font-size: 0.95rem;
    color: var(--gray);
}

.publication-journal {
    font-size: 0.9rem;
    color: var(--primary-blue);
    font-weight: 600;
}

.publication-journal i {
    margin-right: 8px;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.director-project-card {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    border-left: 4px solid var(--primary-orange);
}

.director-project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.project-header i {
    font-size: 2rem;
    color: var(--primary-orange);
}

.project-year-badge {
    background: var(--gradient-primary);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-year-badge-ongoing {
    background: linear-gradient(135deg, var(--primary-orange) 0%, var(--primary-blue) 100%);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    animation: pulse 2s ease-in-out infinite;
}

.project-year-badge-pre {
    background: var(--gradient-primary);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 149, 0, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(255, 149, 0, 0);
    }
}

.project-title {
    font-size: 1.2rem;
    color: var(--dark-gray);
    font-weight: 700;
    margin-bottom: 15px;
    line-height: 1.4;
}

.project-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.project-title a:hover {
    color: var(--primary-orange);
}

.project-authors {
    font-size: 0.9rem;
    color: var(--gray);
    margin-bottom: 10px;
}

.project-description {
    font-size: 0.95rem;
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

/* Books Grid */
.books-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.book-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    display: flex;
    gap: 25px;
    align-items: flex-start;
}

.book-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.book-cover {
    flex-shrink: 0;
    width: 140px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.book-cover img {
    width: 100%;
    height: auto;
    display: block;
}

.book-icon {
    flex-shrink: 0;
}

.book-icon i {
    font-size: 3rem;
    color: var(--primary-blue);
}

.book-content {
    flex: 1;
    min-width: 0;
    overflow: hidden;
}

.book-content h4 {
    font-size: 1.25rem;
    color: var(--dark-gray);
    margin-bottom: 5px;
    font-weight: 700;
    line-height: 1.3;
}

.book-subtitle {
    font-size: 0.9rem;
    color: var(--primary-blue);
    font-style: italic;
    margin-bottom: 12px;
    font-weight: 500;
    line-height: 1.4;
}

.book-authors {
    font-size: 0.95rem;
    color: var(--dark-gray);
    margin-bottom: 6px;
    line-height: 1.5;
}

.book-authors strong {
    color: var(--primary-orange);
}

.book-info {
    font-size: 0.85rem;
    color: var(--gray);
    margin-bottom: 6px;
    line-height: 1.4;
}

.book-publisher {
    font-size: 0.85rem;
    color: var(--primary-orange);
    font-weight: 600;
    margin-bottom: 0;
    line-height: 1.4;
}

.book-description {
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.6;
}

/* Conference Presentations Timeline */
.conferences-timeline {
    max-width: 900px;
    margin: 0 auto;
}

.conference-item {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 15px;
    transition: all var(--transition-normal);
    align-items: flex-start;
}

.conference-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.conference-year-badge {
    flex-shrink: 0;
    background: var(--gradient-secondary);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    min-width: 60px;
    text-align: center;
}

.conference-content {
    flex: 1;
}

.conference-content h4 {
    font-size: 1.05rem;
    color: var(--dark-gray);
    margin-bottom: 8px;
    font-weight: 600;
    line-height: 1.4;
}

.conference-location {
    font-size: 0.9rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 6px;
}

.conference-location i {
    color: var(--primary-orange);
    font-size: 0.85rem;
}

/* Domestic Conferences */
.domestic-conferences {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 20px;
}

.domestic-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background: white;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    align-items: flex-start;
}

.domestic-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.domestic-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
}

.domestic-content {
    flex: 1;
}

.domestic-content h4 {
    font-size: 1.1rem;
    color: var(--dark-gray);
    margin-bottom: 10px;
    font-weight: 700;
}

.domestic-content p {
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.7;
}

/* Conferences List */
.conferences-list {
    max-width: 1000px;
    margin: 0 auto;
}

.director-conference-item {
    display: grid;
    grid-template-columns: 100px 1fr;
    gap: 30px;
    padding: 25px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
    transition: all var(--transition-normal);
}

.director-conference-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.conference-year {
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary-blue);
    text-align: center;
    padding: 15px;
    background: var(--light-gray);
    border-radius: 10px;
}

.conference-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.conference-title {
    font-size: 1.2rem;
    color: var(--dark-gray);
    font-weight: 700;
    line-height: 1.4;
}

.conference-title a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.conference-title a:hover {
    color: var(--primary-orange);
}

.conference-authors {
    font-size: 0.95rem;
    color: var(--gray);
}

.conference-name {
    font-size: 0.9rem;
    color: var(--primary-blue);
    font-weight: 600;
}

.conference-name i {
    margin-right: 8px;
}

/* Activities Grid */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.activity-item {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.activity-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.activity-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.activity-icon i {
    font-size: 1.8rem;
    color: white;
}

.activity-content h4 {
    font-size: 1.3rem;
    color: var(--dark-gray);
    margin-bottom: 15px;
    font-weight: 700;
}

.activity-content ul {
    list-style: none;
    padding: 0;
}

.activity-content ul li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
    color: var(--gray);
    line-height: 1.6;
    font-size: 0.9rem;
}

.activity-content ul li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-blue);
    font-weight: bold;
}
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .members-top-grid,
    .members-bottom-grid,
    .alumni-top-row,
    .alumni-bottom-row {
        grid-template-columns: 1fr !important;
        max-width: 100% !important;
    }
    
    .org-level {
        flex-direction: column;
        align-items: center;
    }
    
    .org-connector::before,
    .org-connector::after {
        display: none;
    }
    
    .advisors-grid {
        grid-template-columns: 1fr;
    }
    
    .member-actions {
        flex-direction: column;
    }
    
    .member-action-btn {
        width: 100%;
        min-width: auto;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .vision-statement p {
        font-size: 1.1rem;
        padding: 25px 20px;
    }
    
    .contact-info,
    .contact-form {
        padding: 30px;
    }
    
    .book-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 25px;
    }
    
    .book-cover {
        width: 120px;
    }
    
    .book-content h4 {
        font-size: 1.1rem;
    }
    
    .book-subtitle,
    .book-authors,
    .book-info {
        font-size: 0.85rem;
    }
    
    .conference-item {
        flex-direction: column;
        gap: 12px;
    }
    
    .conference-year-badge {
        align-self: flex-start;
    }
    
    .conference-content h4 {
        font-size: 0.95rem;
    }
    
    .domestic-item {
        flex-direction: column;
        gap: 15px;
        align-items: center;
        text-align: center;
    }
    
    .activities-grid {
        grid-template-columns: 1fr;
    }
    
    .activity-item {
        padding: 25px;
    }
    
    .activity-content ul li {
        font-size: 0.85rem;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .btn {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
    
    .publications-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .research-publications {
        padding: 30px 20px;
    }
}