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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    max-width: 700px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Typography */
h1, h2, h3 {
    font-weight: 600;
    line-height: 1.25;
}

h1 {
    font-size: 2.5em;
    margin: 10px 0;
}

h2 {
    font-size: 1.5em;
    margin-top: 40px;
    margin-bottom: 25px;
    padding-bottom: 8px;
    border-bottom: 1px solid #eaecef;
}

h3 {
    font-size: 1.25em;
    margin-bottom: 8px;
}

p {
    margin-bottom: 16px;
}

a {
    color: #0366d6;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Header section */
header {
    text-align: center;
    margin-bottom: 50px;
}

.profile-img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 25px;
    display: block;
}

.tagline {
    font-size: 1.2em;
    color: #555;
    margin-bottom: 15px;
}

.social-links {
    margin-top: 15px;
}

.social-links a {
    margin: 0 10px;
    font-size: 1.5em;
    color: #333;
    display: inline-block;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: #0366d6;
    text-decoration: none;
}

.social-links i {
    width: 24px;
    text-align: center;
}

/* Featured talks section */
#talks {
    margin-bottom: 40px;
}

.talks-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.talk-card {
    border-radius: 6px;
    overflow: hidden;
    background: #fff;
    border: 1px solid #e1e4e8;
    transition: all 0.3s ease;
    position: relative;
}

.talk-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border-color: #0366d6;
}

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

.talk-link:hover {
    text-decoration: none;
}

.talk-image {
    width: 100%;
    height: 140px;
    position: relative;
    overflow: hidden;
}

.talk-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    transition: transform 0.3s ease;
    background-color: #f8f9fa;
    padding: 8px;
}

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

.talk-info {
    padding: 12px;
}

.talk-info h3 {
    font-size: 0.9em;
    margin: 0 0 6px 0;
    line-height: 1.3;
    color: #333;
    font-weight: 600;
}

.talk-venue {
    color: #666;
    font-style: italic;
    margin: 0;
    font-size: 0.8em;
}

/* Publications section */
#publications {
    margin-bottom: 40px;
}

.publications-list {
    list-style: disc;
    padding-left: 20px;
    margin-top: 15px;
}

.publications-list li {
    margin-bottom: 15px;
    line-height: 1.5;
}

.publications-list em {
    font-style: italic;
}

.publications-list a {
    color: #0366d6;
    margin-left: 3px;
}

.subsection-title {
    font-size: 1.2em;
    font-weight: 600;
    color: #333;
    margin: 30px 0 15px 0;
}

.scholar-link {
    margin-top: 20px;
    color: #666;
    font-style: italic;
}

.scholar-link a {
    color: #0366d6;
    font-weight: 500;
}

/* Footer */
footer {
    margin-top: 60px;
    padding-top: 20px;
    border-top: 1px solid #eaecef;
    text-align: center;
    color: #666;
    font-size: 0.9em;
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .container {
        padding: 20px 16px;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .profile-img {
        width: 150px;
        height: 150px;
    }
    
    .social-links a {
        margin: 0 8px;
        font-size: 1.3em;
    }
    
    .talks-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .talk-image {
        height: 100px;
    }
    
    .talk-info {
        padding: 10px;
    }
    
    .talk-info h3 {
        font-size: 0.85em;
    }
    
    .talk-venue {
        font-size: 0.75em;
    }
}