:root {
    --primary-color: #1a1a1a;
    --text-color: #333;
    --light-gray: #666;
    --lighter-gray: #999;
    --border-color: #e0e0e0;
    --link-color: #0066cc;
    --link-hover: #004499;
    --bg-color: #ffffff;
    --secondary-bg: #f8f9fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-color);
    background: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.site-header {
    padding: 40px 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 60px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.main-nav {
    display: flex;
    gap: 30px;
}

.main-nav a {
    font-size: 16px;
    color: var(--light-gray);
    text-decoration: none;
    transition: color 0.2s ease;
    font-weight: 400;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    margin-bottom: 80px;
}

.profile-image {
    float: right;
    margin: 0 0 30px 40px;
    width: 280px;
    animation: fadeIn 0.8s ease;
}

.profile-image img {
    width: 100%;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.intro {
    font-size: 17px;
    line-height: 1.8;
    margin-bottom: 30px;
    animation: fadeIn 0.8s ease 0.2s both;
}

.intro p {
    margin-bottom: 20px;
}

.social-links {
    font-size: 15px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    animation: fadeIn 0.8s ease 0.4s both;
}

.social-links a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.social-links a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Updates Section */
.updates {
    margin-bottom: 80px;
    clear: both;
    animation: fadeIn 0.8s ease 0.6s both;
}

.updates h2 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--primary-color);
}

.update-item {
    margin-bottom: 15px;
    line-height: 1.7;
    font-size: 16px;
}

.update-item strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* Spotlight Research Section */
.spotlight {
    margin-bottom: 80px;
    animation: fadeIn 0.8s ease 0.8s both;
}

.spotlight h2 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 40px;
    color: var(--primary-color);
}

.research-grid {
    display: grid;
    gap: 50px;
}

.research-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 30px;
    padding-bottom: 50px;
    border-bottom: 1px solid var(--border-color);
    transition: transform 0.3s ease;
}

.research-card:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.research-card:hover {
    transform: translateY(-2px);
}

.research-image {
    width: 100%;
    overflow: hidden;
    border-radius: 4px;
    background: var(--secondary-bg);
}

.research-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.3s ease;
}

.research-card:hover .research-image img {
    transform: scale(1.03);
}

.research-content h3 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 22px;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.research-content h3 a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.research-content h3 a:hover {
    color: var(--link-color);
}

.authors {
    font-size: 15px;
    margin-bottom: 8px;
    color: var(--light-gray);
}

.authors strong {
    color: var(--text-color);
    font-weight: 600;
}

.venue {
    font-size: 15px;
    font-style: italic;
    color: var(--lighter-gray);
    margin-bottom: 15px;
}

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

.research-links a {
    color: var(--link-color);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 16px;
    border: 1px solid var(--link-color);
    border-radius: 3px;
    transition: all 0.2s ease;
}

.research-links a:hover {
    background: var(--link-color);
    color: white;
}

/* Footer */
.site-footer {
    margin-top: 100px;
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.footer-logo {
    width: 120px;
    flex-shrink: 0;
}

.footer-logo img {
    width: 100%;
    height: auto;
}

.footer-info {
    flex: 1;
}

.footer-info h3 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.footer-info p {
    font-size: 15px;
    color: var(--light-gray);
    margin-bottom: 8px;
}

.footer-info a {
    color: var(--link-color);
    text-decoration: none;
}

.footer-info a:hover {
    text-decoration: underline;
}

.footer-social {
    margin: 20px 0;
}

.footer-social a {
    margin-right: 15px;
    color: var(--link-color);
    text-decoration: none;
    font-size: 14px;
}

.footer-social a:hover {
    text-decoration: underline;
}

.copyright {
    margin-top: 20px;
    font-size: 13px;
    color: var(--lighter-gray);
}

.last-updated {
    font-size: 13px;
    color: var(--lighter-gray);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }
    
    .profile-image {
        float: none;
        width: 100%;
        max-width: 300px;
        margin: 0 auto 30px;
        display: block;
    }
    
    .research-card {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .site-footer {
        flex-direction: column;
    }
    
    .footer-logo {
        width: 100px;
    }
}

@media (max-width: 480px) {
    .main-nav {
        gap: 15px;
        flex-wrap: wrap;
    }
    
    .updates h2,
    .spotlight h2 {
        font-size: 28px;
    }
    
    .research-content h3 {
        font-size: 20px;
    }
}