/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #111;
    background-color: #fff;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    padding-bottom: 4rem;
}

/* Navigation */
header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    height: 64px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    height: 64px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #000;
    text-decoration: none;
    transition: color 0.3s ease;
}

.logo:hover {
    color: #222;
}

.logo-img {
    height: 40px;
    width: auto;
    vertical-align: middle;
    display: inline-block;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #4b5563;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: #000;
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover,
.nav-links a.active {
    color: #000;
}

/* Main Content */
main {
    margin-top: 4rem;
    padding-bottom: 4rem;
}

/* Hero Section */
.hero {
    background-color: #fff !important;
    color: #000;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    text-align: center;
    padding: 150px 20px;
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-overlay {
    background: none !important;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 4em;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
    background: none;
    color: #000;
    -webkit-text-fill-color: #000;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    color: #000;
    font-size: 2rem;
    cursor: pointer;
    animation: bounce 2s infinite;
}

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

/* Main Content Layout */
.main-content-wrapper {
    display: flex;
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

.content-container {
    flex: 1;
    max-width: 900px;
}

/* News Sidebar */
.news-sidebar {
    width: 300px;
    position: sticky;
    top: 100px;
    height: fit-content;
    padding: 25px;
    background: #fafafa;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-top: 80px;
}

.news-content h2 {
    font-size: 1.5em;
    margin-bottom: 20px;
    color: #111;
    padding-bottom: 10px;
    border-bottom: 2px solid #e0e0e0;
}

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

.news-item {
    background: white;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.news-item:hover {
    transform: translateY(-3px);
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    border-bottom: 2px solid #e0e0e0;
}

.news-date {
    color: #666;
    font-size: 0.85em;
}

.news-tag {
    background: #e0e0e0;
    color: #000;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75em;
    font-weight: 500;
    text-transform: uppercase;
}

.news-item h3 {
    color: #111;
    font-size: 1.1em;
    margin-bottom: 5px;
    font-weight: 600;
}

.news-item p {
    color: #475569;
    font-size: 0.9em;
    margin: 0;
    line-height: 1.4;
}

.link-arrow {
    color: #000;
    text-decoration: none;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9em;
    transition: color 0.3s ease;
}

.link-arrow i {
    transition: transform 0.3s ease;
    color: #000;
}

.link-arrow:hover {
    color: #222;
}

.link-arrow:hover i {
    transform: translateX(5px);
}

/* About Section */
.about {
    padding: 80px 0;
    background: white;
}

.about-content {
    max-width: 100%;
    margin: 0 auto;
}

.intro-text {
    font-size: 1.2em;
    color: #475569;
    margin-bottom: 60px;
    padding: 30px;
    background: #f8fafc;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.research-focus,
.mission-section,
.approach-section {
    margin-bottom: 80px;
}

h2 {
    font-size: 2.5em;
    color: #111;
    margin-bottom: 30px;
    text-align: center;
}

.central-question {
    text-align: center;
    margin: 40px 0;
}

.highlight {
    font-size: 2em;
    color: #000;
    font-weight: 600;
    line-height: 1.4;
    max-width: 800px;
    margin: 0 auto;
}

.mission-box {
    background: #fafafa;
    color: #000;
    padding: 40px;
    border-radius: 12px;
    text-align: center;
    font-size: 1.5em;
    margin: 40px 0;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.approach-item {
    background: white;
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.approach-item:hover {
    transform: translateY(-5px);
}

.approach-item i {
    font-size: 2.5em;
    color: #000;
    margin-bottom: 15px;
}

.approach-item span {
    display: block;
    font-size: 1.2em;
    color: #111;
    font-weight: 500;
}

.approach-description {
    text-align: center;
    font-size: 1.2em;
    color: #444;
    max-width: 800px;
    margin: 40px auto 0;
}

/* Footer */
footer {
    background-color: #111;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    color: #60a5fa;
    font-size: 1.2em;
    margin-bottom: 20px;
}

.footer-section p {
    color: #cbd5e1;
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section ul li a {
    color: #eee;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #fff;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: #94a3b8;
    font-size: 0.9em;
}

.footer-logo {
    height: 48px;
    width: auto;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-logo-section {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .main-content-wrapper {
        flex-direction: column;
    }

    .news-sidebar {
        width: 100%;
        position: static;
        margin-top: 0;
        margin-bottom: 40px;
        padding: 20px;
    }

    .news-list {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 15px;
    }

    .content-container {
        order: 2;
    }

    .news-sidebar {
        order: 1;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        padding: 1rem;
        flex-direction: column;
        gap: 1rem;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }

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

    .hero-content h1 {
        font-size: 2.5em;
    }

    .highlight {
        font-size: 1.5em;
    }

    .mission-box {
        font-size: 1.2em;
        padding: 30px;
    }

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

    .container {
        padding: 0 1rem;
    }

    .main-content-wrapper {
        padding: 0 1rem;
    }
}

/* Team Section */
.team-member {
    background: white;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.2s ease-in-out;
}

.team-member:hover {
    transform: translateY(-5px);
}

.team-member-image {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    border: 3px solid #f0f0f0;
}

.team-member h3 {
    margin: 0 0 10px;
    color: #333;
}

.team-member .role {
    color: #666;
    font-weight: 500;
    margin-bottom: 5px;
}

.team-member .title,
.team-member .department,
.team-member .affiliation {
    color: #666;
    margin: 5px 0;
    font-size: 0.9em;
}

.team-member .research {
    color: #444;
    margin-top: 10px;
    font-style: italic;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.alumni-list {
    margin-top: 2rem;
}

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

.alumni-list li {
    padding: 0.75rem 0;
    border-bottom: 1px solid #e5e7eb;
    color: #4b5563;
}

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

/* Update existing styles */
.people {
    padding: 4rem 0;
    background-color: #f8fafc;
}

.people h2 {
    margin-bottom: 2rem;
    color: #1e293b;
    font-size: 2rem;
}

/* Publications Section */
.publications {
    padding: 80px 0;
    background-color: #f8fafc;
}

.publications h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: #1e293b;
    position: relative;
}

.publications h2::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: #2563eb;
    margin: 20px auto;
    border-radius: 2px;
}

.publication-section {
    max-width: 1000px;
    margin: 0 auto 60px;
    padding: 0 20px;
}

.publication-section h3 {
    color: #1e293b;
    font-size: 1.8em;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid #e2e8f0;
}

.publication-list {
    list-style: none;
    padding: 0;
}

.publication-item {
    background: white;
    border-radius: 12px;
    padding: 25px 30px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.publication-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: #2563eb;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.publication-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.publication-item:hover::before {
    opacity: 1;
}

.publication-item h4 {
    color: #1e293b;
    font-size: 1.2em;
    margin-bottom: 10px;
    line-height: 1.4;
}

.publication-item p {
    color: #475569;
    margin: 5px 0;
    line-height: 1.6;
}

.publication-item .authors {
    font-weight: 500;
    color: #334155;
}

.publication-item .journal {
    font-style: italic;
    color: #64748b;
}

.publication-item .year {
    color: #2563eb;
    font-weight: 500;
}

.publication-item .doi {
    color: #64748b;
    font-size: 0.9em;
    margin-top: 10px;
    display: block;
}

.publication-item .doi a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

.publication-item .doi a:hover {
    color: #1d4ed8;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .publication-item {
        padding: 20px;
    }
}

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

.pi-section h3 {
    color: #333;
    margin-bottom: 30px;
    font-size: 1.8em;
}

.team-member.pi {
    max-width: 600px;
    margin: 0 auto;
    padding: 30px;
}

.team-member.pi .team-member-image {
    width: 250px;
    height: 250px;
}

.phd-section {
    margin-top: 40px;
}

.phd-section h3 {
    color: #333;
    margin-bottom: 30px;
    font-size: 1.8em;
    text-align: center;
}

.grid {
    display: grid;
    gap: 2.5rem;
}

.col-8 {
    grid-column: 1 / span 2;
}

.col-4 {
    grid-column: 3 / span 1;
}

.section .h1, .section .h2 {
    margin-top: 3.5rem;
    margin-bottom: 2.5rem;
}

.card {
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    border-radius: 1rem;
    background: #fff;
    padding: 2.5rem 2rem;
    margin-bottom: 2.5rem;
}