/* ===== CSS Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --navy: #002b5c;
    --navy-dark: #001d3d;
    --white: #ffffff;
    --light-gray: #f9fafb;
    --muted-blue: #7da6cc;
    --muted-blue-light: #a3c4e0;
    --dark-text: #333333;
    --dark-text-alt: #1f2937;
    --gray-text: #6b7280;
    --gray-text-light: #9ca3af;
    --border: #e5e7eb;
    --border-dark: #d1d5db;
    --font-heading: 'Noto Serif', serif;
    --font-body: 'Noto Sans KR', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--dark-text);
    line-height: 1.7;
    background-color: var(--white);
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Top Utility Bar ===== */
.top-bar {
    background-color: var(--navy);
    color: var(--muted-blue-light);
    font-size: 13px;
    padding: 6px 0;
    letter-spacing: 0.02em;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar-left span {
    color: var(--muted-blue-light);
}

/* ===== Navigation ===== */
.navbar {
    background: var(--white);
    border-bottom: 3px solid var(--navy);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: box-shadow 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 2px 12px rgba(0, 43, 92, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--navy);
}

.logo-crest {
    width: 44px;
    height: 44px;
    background-color: var(--navy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    letter-spacing: 1px;
    flex-shrink: 0;
}

.logo-hyu {
    height: 60px;
    width: auto;
    flex-shrink: 0;
}

.logo-text-wrapper {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.logo-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 30px;
    color: var(--navy);
    letter-spacing: 2px;
}

.logo-sub {
    font-size: 18px;
    color: var(--gray-text);
    letter-spacing: 0.5px;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav-menu > li {
    position: relative;
}

.nav-menu > li > a {
    display: block;
    padding: 24px 18px;
    font-size: 20px;
    font-weight: 500;
    color: var(--dark-text);
    transition: color 0.2s;
    letter-spacing: 0.01em;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--navy);
}

.nav-menu > li > a.active {
    border-bottom: 3px solid var(--navy);
    margin-bottom: -3px;
}

/* Dropdown */
.nav-dropdown .dropdown-toggle {
    cursor: pointer;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 2px solid var(--navy);
    min-width: 200px;
    z-index: 100;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.nav-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li a {
    display: block;
    padding: 10px 18px;
    font-size: 20px;
    color: var(--dark-text);
    transition: background 0.15s, color 0.15s;
}

.dropdown-menu li a:hover {
    background-color: var(--light-gray);
    color: var(--navy);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

.hamburger .bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--navy);
    transition: all 0.3s ease;
}

.hamburger.active .bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active .bar:nth-child(2) {
    opacity: 0;
}

.hamburger.active .bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Breadcrumbs ===== */
.breadcrumb {
    background-color: var(--light-gray);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
    font-size: 16px;
    color: var(--gray-text);
}

.breadcrumb a {
    color: var(--gray-text);
    transition: color 0.15s;
}

.breadcrumb a:hover {
    color: var(--navy);
}

.breadcrumb span {
    margin: 0 6px;
    color: var(--gray-text-light);
}

.breadcrumb .current {
    color: var(--dark-text);
    font-weight: 500;
}

/* ===== Page Header ===== */
.page-header {
    background-color: var(--navy);
    color: var(--white);
    padding: 48px 0 44px;
    text-align: center;
}

.page-header h1 {
    font-family: var(--font-heading);
    font-size: 46px;
    font-weight: 700;
    letter-spacing: 1px;
}

.page-header p {
    margin-top: 8px;
    color: var(--muted-blue-light);
    font-size: 15px;
}

/* ===== Section Base ===== */
.section {
    padding: 64px 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--navy);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    background-color: var(--navy);
    margin: 12px auto 0;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--navy);
    color: var(--muted-blue);
    padding: 40px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 40px;
    align-items: start;
    padding-bottom: 32px;
    border-bottom: 1px solid rgba(125, 166, 204, 0.2);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.footer-hyu {
    height: 50px;
    width: auto;
    opacity: 0.85;
}

.footer-logo .logo-text {
    font-family: var(--font-heading);
    font-size: 40px;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 2px;
}

.footer-logo .logo-sub {
    font-size: 20px;
    color: var(--muted-blue);
    width: 100%;
    margin-top: 4px;
}

.footer-info p {
    font-size: 20px;
    color: var(--muted-blue);
    line-height: 1.8;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.footer-links a {
    font-size: 18px;
    color: var(--muted-blue);
    transition: color 0.15s;
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    padding: 16px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--muted-blue);
    opacity: 0.7;
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 10px 28px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-family: var(--font-body);
}

.btn-primary {
    background-color: var(--navy);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--navy-dark);
}

.btn-outline {
    background: transparent;
    color: var(--navy);
    border: 1px solid var(--navy);
}

.btn-outline:hover {
    background-color: var(--navy);
    color: var(--white);
}

/* ===== Cards ===== */
.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 24px;
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 16px rgba(0, 43, 92, 0.08);
}

/* ===== Badge ===== */
.badge {
    display: inline-block;
    padding: 3px 10px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 3px;
}

.badge-ongoing {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.badge-completed {
    background-color: #e3f2fd;
    color: #1565c0;
}

/* ===== Scroll Fade-in ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}


/* ==========================================================
   INDEX PAGE (Homepage)
   ========================================================== */

/* Hero */
.hero {
    position: relative;
    background-color: var(--navy);
    color: var(--white);
    padding: 100px 0 80px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 60%, #003d7a 100%);
    opacity: 0.95;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    font-size: 18px;
    color: var(--muted-blue-light);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 400;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 56px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 8px;
    color: var(--white);
}

.hero-korean {
    font-size: 26px;
    color: var(--muted-blue-light);
    margin-bottom: 20px;
    font-weight: 300;
}

.hero-line {
    width: 48px;
    height: 3px;
    background-color: var(--muted-blue);
    margin-bottom: 20px;
}

.hero-description {
    font-size: 22px;
    color: var(--muted-blue-light);
    line-height: 1.8;
    max-width: 740px;
}

/* About Section */
.about-section {
    background-color: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 48px;
    align-items: start;
}

.about-text h2 {
    font-family: var(--font-heading);
    font-size: 34px;
    color: var(--navy);
    margin-bottom: 20px;
}

.about-text p {
    font-size: 20px;
    color: var(--gray-text);
    margin-bottom: 16px;
    line-height: 1.8;
}

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 24px;
    text-align: center;
}

.stat-card .stat-icon {
    font-size: 32px;
    color: var(--navy);
    margin-bottom: 8px;
}

.stat-card .stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 40px;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.2;
}

.stat-card .stat-label {
    display: block;
    font-size: 18px;
    color: var(--gray-text);
    margin-top: 4px;
}

/* Research Highlights */
.research-highlights {
    background-color: var(--light-gray);
}

.research-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.research-cards.research-cards-3x3 {
    grid-template-columns: repeat(3, 1fr);
}

.research-highlight-card {
    display: block;
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 3px solid var(--navy);
    border-radius: 4px;
    padding: 28px 20px;
    text-align: center;
    transition: box-shadow 0.2s, transform 0.2s;
}

.research-highlight-card:hover {
    box-shadow: 0 6px 20px rgba(0, 43, 92, 0.1);
    transform: translateY(-2px);
}

.research-highlight-card .card-icon {
    font-size: 36px;
    color: var(--navy);
    margin-bottom: 16px;
}

.research-highlight-card h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 10px;
    line-height: 1.4;
}

.research-highlight-card p {
    font-size: 16px;
    color: var(--gray-text);
    line-height: 1.6;
}


/* ==========================================================
   PROFESSOR PAGE
   ========================================================== */

.professor-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    align-items: start;
}

.professor-main {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.professor-photo {
    width: 200px;
    flex-shrink: 0;
}

.professor-photo img {
    width: 100%;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.professor-header h2 {
    font-family: var(--font-heading);
    font-size: 32px;
    color: var(--navy);
    margin-bottom: 8px;
}

.professor-dept {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 2px;
}

.professor-univ {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 2px;
}

.professor-affiliation {
    font-size: 16px;
    color: var(--navy);
    font-weight: 500;
    margin-top: 8px;
    margin-bottom: 16px;
}

.professor-contact {
    margin-top: 12px;
}

.contact-row {
    display: flex;
    gap: 8px;
    font-size: 16px;
    margin-bottom: 4px;
}

.contact-row .label {
    font-weight: 600;
    color: var(--dark-text);
    min-width: 52px;
}

/* Scholar Stats Card */
.scholar-stats-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-top: 3px solid var(--navy);
    border-radius: 4px;
    padding: 28px;
    box-shadow: 0 2px 12px rgba(0, 43, 92, 0.08);
}

.scholar-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 16px;
    font-size: 26px;
}

.scholar-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
}

.scholar-stat-item {
    text-align: center;
    flex: 1;
    background: var(--light-gray);
    border-radius: 6px;
    padding: 14px 10px;
}

.scholar-stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 34px;
    font-weight: 700;
    color: var(--navy);
}

.scholar-stat-label {
    font-size: 20px;
    color: var(--gray-text);
}

.scholar-last-updated {
    font-size: 16px;
    color: var(--gray-text-light);
    margin-bottom: 12px;
}

.scholar-link {
    display: inline-block;
    font-size: 16px;
    color: var(--navy);
    font-weight: 500;
    transition: color 0.15s;
}

.scholar-link:hover {
    color: var(--navy-dark);
}

/* Professor Detail Sections */
.professor-detail-section {
    margin-top: 48px;
    border-top: 1px solid var(--border);
    padding-top: 32px;
}

.professor-detail-section h3 {
    font-family: var(--font-heading);
    font-size: 30px;
    color: var(--navy);
    margin-bottom: 20px;
}

.detail-content p {
    font-size: 18px;
    color: var(--dark-text);
    line-height: 1.8;
    margin-bottom: 12px;
}

/* Timeline */
.timeline-list li {
    position: relative;
    padding: 10px 0 10px 20px;
    font-size: 18px;
    line-height: 1.6;
    border-left: 2px solid var(--border);
}

.timeline-list li::before {
    content: '';
    position: absolute;
    left: -5px;
    top: 24px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--navy);
}

.timeline-list .year {
    display: inline-block;
    font-size: 22px;
    font-weight: 600;
    color: var(--navy);
    min-width: 140px;
    margin-right: 8px;
}

/* Activities Grid */
.activities-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.activity-group h4 {
    font-size: 24px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 10px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.activity-group ul {
    list-style: none;
}

.activity-group ul li {
    font-size: 18px;
    color: var(--dark-text);
    padding: 4px 0;
    padding-left: 14px;
    position: relative;
}

.activity-group ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 11px;
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--muted-blue);
}

/* Awards */
.awards-list li {
    padding: 8px 0;
    font-size: 18px;
    border-bottom: 1px solid var(--border);
}

.awards-list li:last-child {
    border-bottom: none;
}

.award-year {
    display: inline-block;
    font-size: 22px;
    font-weight: 600;
    color: var(--navy);
    min-width: 120px;
    margin-right: 8px;
}


/* ==========================================================
   MEMBERS PAGE
   ========================================================== */

.members-section {
    padding: 48px 0;
}

.members-section.alt-bg {
    background-color: var(--light-gray);
}

.member-category-title {
    font-family: var(--font-heading);
    font-size: 30px;
    color: var(--navy);
    margin-bottom: 28px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--navy);
    display: inline-block;
}

.members-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.member-card {
    display: flex;
    gap: 24px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 32px 24px;
    align-items: flex-start;
    transition: box-shadow 0.2s;
}

.members-section.alt-bg .member-card {
    background: var(--white);
}

.member-card:hover {
    box-shadow: 0 2px 12px rgba(0, 43, 92, 0.06);
}

.member-photo {
    width: 220px;
    flex-shrink: 0;
}

.member-photo img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.member-info h4 {
    font-family: var(--font-heading);
    font-size: 29px;
    color: var(--navy);
    margin-bottom: 16px;
}

.member-info p {
    font-size: 20px;
    color: var(--gray-text);
    margin-bottom: 4px;
}

.member-info p:first-of-type {
    margin-bottom: 12px;
}

.member-info p strong {
    color: var(--dark-text);
}

.member-info p:has(strong) {
    font-size: 20px;
    margin-top: 14px;
    padding-left: 156px;
    text-indent: -156px;
}

.member-email {
    margin-top: 14px;
    font-size: 14px;
    color: var(--navy);
}

/* Simple member card (no photo) */
.member-card.simple {
    padding: 16px 24px;
}

.member-card.simple .member-info h4 {
    font-size: 24px;
    margin-bottom: 4px;
}

.member-card.simple .member-info p {
    font-size: 16px;
}

.member-company {
    font-size: 16px;
    color: var(--gray-text);
}

/* Alumni Table */
.alumni-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 18px;
}

.alumni-table thead {
    background-color: var(--navy);
    color: var(--white);
}

.alumni-table th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 22px;
}

.alumni-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--dark-text);
    font-size: 18px;
}

.alumni-table tbody tr:hover {
    background-color: var(--light-gray);
}

.alumni-table tbody tr:nth-child(even) {
    background-color: #fafbfc;
}


/* ==========================================================
   RESEARCH PAGE
   ========================================================== */

.research-section {
    padding: 64px 0;
    border-bottom: 1px solid var(--border);
}

.research-section:last-of-type {
    border-bottom: none;
}

.research-section:nth-child(even) {
    background-color: var(--light-gray);
}

.research-header {
    display: flex;
    align-items: baseline;
    gap: 16px;
    margin-bottom: 28px;
}

.research-number {
    font-family: var(--font-heading);
    font-size: 54px;
    font-weight: 700;
    color: var(--navy);
    opacity: 0.15;
    line-height: 1;
    flex-shrink: 0;
}

.research-area-title {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--navy);
    line-height: 1.4;
}

.research-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: stretch;
}

.research-section:nth-child(even) .research-inner {
    direction: rtl;
}

.research-section:nth-child(even) .research-inner > * {
    direction: ltr;
}

.research-description p {
    font-size: 18px;
    color: var(--dark-text);
    line-height: 1.8;
    margin-bottom: 12px;
}

.research-topics-list {
    margin-top: 8px;
    padding-left: 0;
}

.research-topics-list li {
    font-size: 16px;
    color: var(--dark-text);
    line-height: 1.7;
    padding: 3px 0 3px 20px;
    position: relative;
}

.research-topics-list li::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 14px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--navy);
    opacity: 0.4;
}

.research-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.keyword-tag {
    display: inline-block;
    padding: 4px 14px;
    font-size: 16px;
    background-color: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--navy);
    font-weight: 500;
}

.research-images {
    margin-top: 0;
    display: flex;
    flex-direction: column;
}

/* Research Image Slider */
.research-slider {
    position: relative;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.research-slider .slides {
    position: relative;
    width: 100%;
    flex: 1;
}

.research-slider .slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.research-slider .slide.active {
    opacity: 1;
}

.research-slider .slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--light-gray);
}

.research-slider .slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 6px 12px;
    background: rgba(0, 43, 92, 0.75);
    color: var(--white);
    font-size: 12px;
    text-align: center;
}

.slider-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    padding: 10px;
}

.slider-indicators .indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-dark);
    cursor: pointer;
    transition: background 0.2s;
}

.slider-indicators .indicator.active {
    background: var(--navy);
}


/* ==========================================================
   PROJECTS PAGE
   ========================================================== */

.projects-subtitle {
    text-align: center;
    font-size: 15px;
    color: var(--gray-text);
    margin-bottom: 36px;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.project-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 28px;
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.15s;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    box-shadow: 0 6px 20px rgba(0, 43, 92, 0.1);
    transform: translateY(-2px);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.project-number {
    font-family: var(--font-heading);
    font-size: 40px;
    font-weight: 700;
    color: var(--navy);
    opacity: 0.3;
}

.project-status {
    padding: 3px 12px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 3px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.project-status.ongoing {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.project-status.completed {
    background-color: #e3f2fd;
    color: #1565c0;
}

.project-funder {
    font-size: 22px;
    color: var(--gray-text);
    margin-bottom: 8px;
    display: block;
}

.project-title-card {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 600;
    color: var(--dark-text);
    line-height: 1.5;
    margin-bottom: 16px;
    flex-grow: 1;
}

.project-meta {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 16px;
}

.project-meta i {
    margin-right: 4px;
    color: var(--muted-blue);
}

.project-view-detail {
    font-size: 18px;
    color: var(--navy);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
}

.project-view-detail i {
    transition: transform 0.2s;
}

.project-card:hover .project-view-detail i {
    transform: translateX(4px);
}

/* Project Modal */
.project-modal-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    justify-content: center;
    align-items: flex-start;
    padding: 40px 24px;
    overflow-y: auto;
}

.project-modal-overlay.active {
    display: flex;
}

.project-modal {
    background: var(--white);
    border-radius: 4px;
    max-width: 800px;
    width: 100%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
}

.project-modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--gray-text);
    padding: 4px 8px;
    z-index: 1;
    transition: color 0.15s;
}

.project-modal-close:hover {
    color: var(--dark-text);
}

.project-modal-content {
    padding: 36px;
}

.project-modal-funder {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 8px;
    display: block;
}

.project-modal-title {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    line-height: 1.4;
}

.project-modal-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.project-modal-meta i {
    margin-right: 4px;
    color: var(--muted-blue);
}

.project-modal-description h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--navy);
    margin: 20px 0 10px;
}

.project-modal-description p {
    font-size: 18px;
    color: var(--dark-text);
    line-height: 1.8;
    margin-bottom: 12px;
}

.project-modal-description ul {
    list-style: disc;
    padding-left: 20px;
    margin-bottom: 12px;
}

.project-modal-description ul li {
    font-size: 18px;
    color: var(--dark-text);
    line-height: 1.7;
    margin-bottom: 4px;
}

.project-modal-images {
    margin-top: 24px;
    position: relative;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.project-modal-slides {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
}

.project-modal-slides .pm-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.project-modal-slides .pm-slide.active {
    opacity: 1;
}

.project-modal-slides .pm-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--light-gray);
}

.project-modal-slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 43, 92, 0.6);
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 2;
}

.project-modal-slider-nav:hover {
    background: rgba(0, 43, 92, 0.85);
}

.project-modal-slider-nav.prev {
    left: 12px;
}

.project-modal-slider-nav.next {
    right: 12px;
}

.project-modal-indicators {
    display: flex;
    justify-content: center;
    gap: 6px;
    padding: 10px 0;
}

.project-modal-indicators .pm-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border);
    cursor: pointer;
    transition: background 0.2s;
}

.project-modal-indicators .pm-indicator.active {
    background: var(--navy);
}

.project-modal-no-images {
    text-align: center;
    color: var(--gray-text-light);
    font-size: 14px;
    padding: 20px;
}


/* ==========================================================
   PUBLICATIONS PAGE
   ========================================================== */

.pub-filters {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 8px 20px;
    font-size: 18px;
    font-weight: 500;
    border: 1px solid var(--border-dark);
    background: var(--white);
    color: var(--dark-text);
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s;
    font-family: var(--font-body);
}

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

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

/* Year Filter */
.year-filter-container {
    margin-bottom: 24px;
}

.year-filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.year-filter-btn {
    padding: 4px 12px;
    font-size: 18px;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--gray-text);
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.15s;
    font-family: var(--font-body);
}

.year-filter-btn:hover {
    border-color: var(--navy);
    color: var(--navy);
}

.year-filter-btn.active {
    background-color: var(--navy);
    border-color: var(--navy);
    color: var(--white);
}

.year-count {
    font-size: 15px;
    opacity: 0.7;
}

/* Publication Category */
.pub-category {
    margin-top: 16px;
}

/* Publication List */
.pub-year-section {
    margin-bottom: 32px;
}

.pub-year-title {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--navy);
    display: inline-block;
}

.pub-item {
    display: flex;
    gap: 20px;
    padding: 14px 0;
    border-bottom: 1px solid var(--border);
    align-items: flex-start;
}

.pub-item:last-child {
    border-bottom: none;
}

.pub-number {
    font-family: var(--font-heading);
    font-size: 24px;
    font-weight: 700;
    color: var(--navy);
    min-width: 32px;
    text-align: right;
    line-height: 27px;
}

.pub-type {
    padding: 2px 8px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 3px;
    flex-shrink: 0;
    line-height: 27px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.pub-type.journal {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.pub-type.korean {
    background-color: #fff3e0;
    color: #e65100;
}

.pub-type.conference {
    background-color: #e3f2fd;
    color: #1565c0;
}

.pub-content h4 {
    font-size: 18px;
    font-weight: 500;
    color: var(--dark-text);
    line-height: 27px;
    margin-bottom: 4px;
}

.pub-authors {
    font-size: 16px;
    color: var(--gray-text);
    margin-bottom: 2px;
}

.pub-venue {
    font-size: 16px;
    color: var(--muted-blue);
    font-style: italic;
}

.pub-note {
    margin-top: 32px;
    text-align: center;
    font-size: 14px;
    color: var(--gray-text);
}

.pub-note a {
    color: var(--navy);
    font-weight: 500;
    text-decoration: underline;
}

.no-publications {
    text-align: center;
    padding: 40px;
    color: var(--gray-text-light);
    font-size: 15px;
}


/* ==========================================================
   CONTACT PAGE
   ========================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
}

.contact-info-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 32px;
}

.contact-info-card h3 {
    font-family: var(--font-heading);
    font-size: 32px;
    color: var(--navy);
    margin-bottom: 24px;
}

.contact-detail {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
    align-items: flex-start;
}

.contact-icon {
    width: 60px;
    height: 60px;
    background: var(--light-gray);
    border: 1px solid var(--border);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--navy);
    flex-shrink: 0;
    font-size: 24px;
}

.contact-text h4 {
    font-size: 24px;
    font-weight: 600;
    color: var(--dark-text);
    margin-bottom: 2px;
}

.contact-text p {
    font-size: 18px;
    color: var(--gray-text);
    line-height: 1.7;
}

/* Map */
.contact-map-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 32px;
}

.contact-map-card h3 {
    font-family: var(--font-heading);
    font-size: 32px;
    color: var(--navy);
    margin-bottom: 16px;
}

.map-container {
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 20px;
}

.map-container iframe {
    display: block;
    width: 100%;
    height: 280px;
    border: 1px solid var(--border);
}

.directions h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 10px;
}

.directions p {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 6px;
    line-height: 1.7;
}

/* Join Section */
.join-section {
    background-color: var(--light-gray);
    padding: 64px 0;
}

.join-content p {
    font-size: 18px;
    color: var(--dark-text);
    line-height: 1.8;
    margin-bottom: 16px;
}

.join-positions {
    margin: 24px 0;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.position-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 24px;
}

.position-item h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 10px;
}

.position-item h4 i {
    margin-right: 6px;
}

.position-item p {
    font-size: 14px;
    color: var(--gray-text);
    line-height: 1.7;
}

.join-contact {
    text-align: center;
    font-size: 18px;
    color: var(--dark-text);
    margin-top: 24px;
}

.join-contact strong {
    color: var(--navy);
}


/* ==========================================================
   RESPONSIVE
   ========================================================== */

@media (max-width: 1024px) {
    .research-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    .research-cards.research-cards-3x3 {
        grid-template-columns: repeat(3, 1fr);
    }

    .activities-grid {
        grid-template-columns: 1fr;
    }

    .professor-layout {
        grid-template-columns: 1fr;
    }

    .research-inner {
        grid-template-columns: 1fr;
    }

    .research-section:nth-child(even) .research-inner {
        direction: ltr;
    }

    .join-positions {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .top-bar {
        font-size: 11px;
    }

    .nav-container {
        height: 60px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        border-bottom: 3px solid var(--navy);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu > li > a {
        padding: 14px 24px;
        border-bottom: 1px solid var(--border);
    }

    .nav-menu > li > a.active {
        border-bottom: 1px solid var(--border);
        margin-bottom: 0;
    }

    .nav-dropdown:hover .dropdown-menu {
        display: none;
    }

    .nav-dropdown.mobile-open .dropdown-menu {
        display: block;
        position: static;
        border: none;
        border-top: none;
        box-shadow: none;
        background: var(--light-gray);
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 32px;
    }

    .about-grid {
        grid-template-columns: 1fr;
    }

    .research-cards {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    .professor-main {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .professor-photo {
        width: 160px;
    }

    .professor-contact {
        display: inline-block;
        text-align: left;
    }

    .member-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .member-photo {
        width: 120px;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .page-header {
        padding: 32px 0;
    }

    .page-header h1 {
        font-size: 26px;
    }

    .section {
        padding: 48px 0;
    }

    .project-modal-content {
        padding: 24px;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .alumni-table {
        font-size: 13px;
    }

    .alumni-table th,
    .alumni-table td {
        padding: 8px 10px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 26px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .project-meta {
        flex-direction: column;
        gap: 6px;
    }

    .scholar-stats {
        flex-direction: column;
        gap: 12px;
    }

    .pub-filters {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-btn {
        text-align: center;
    }
}