/* --- Global Layout --- */
body {
    margin: 0;
    padding: 0;
    font-family: "Georgia", "Times New Roman", Times, serif;
    background-color: #ffffff;
    color: #333;
    line-height: 1.6;
}

.page-wrapper {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    min-height: 100vh;
    width: 100%; 
}

.sidebar {
    width: 150px;
    background-color: #f4f4f4;
    padding: 40px 20px;
    border-right: 1px solid #ddd;
    flex-shrink: 0;
}

.main-content {
    flex: 1;
    padding: 40px 60px;
    background-color: #fff;
    max-width: 950px; 
}

.menu-title {
    font-size: 19px;
    font-weight: bold;
    margin-bottom: 12px;
    padding-bottom: 2px;
    border-bottom: 1px solid #333;
    display: inline-block;
    width: 100%;
    color: #000;
}

.nav-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-links li {
    margin-bottom: 12px;
}

.nav-links a {
    text-decoration: none;
    font-size: 16px;
    color: #3b5998; 
    display: block;
}

.nav-links a:hover {
    text-decoration: underline;
}

.welcome-header {
    font-size: 34px;
    color: #3b5998;
    margin: 0;
    font-weight: normal;
}

.double-separator {
    height: 4px;
    border-top: 1px solid #3b5998; 
    border-bottom: 1px solid #3b5998;
    margin: 10px 0 30px 0;
    opacity: 0.5;
}

.header-container {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 30px;
    margin-bottom: 40px;
}

.profile-img {
    width: 150px;     
    height: 195px;     
    object-fit: cover;
    border: 1px solid #ccc;
    flex-shrink: 0;
}
.name-title {
    font-size: 26px;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 10px;
    color: #000;
}

h2 {
    color: #3b5998; 
    border-bottom: 1px solid #eee;
    padding-bottom: 5px;
    margin-top: 45px;
    font-size: 24px;
}

.pub-category h3 {
    color: #3b5998;
    font-size: 20px;
    margin-top: 25px;
}

.pub-list {
    padding-left: 25px;
}

.pub-list li {
    margin-bottom: 24px;
    font-size: 16px;
    color: #000;
}

.pub-title {
    font-weight: bold;
}

.pub-links a, .bibtex-details summary {
    color: #3b5998;
    font-size: 15px;
    text-decoration: none;
    margin-right: 14px;
    cursor: pointer;
}

.pub-links a:hover {
    text-decoration: underline;
}

.service-list {
    list-style-type: none;
    padding: 0;
}

.service-list li {
    margin-bottom: 12px;
    font-size: 17px;
    padding-left: 15px;
    border-left: 3px solid #3b5998;
}

.bibtex-details pre {
    background: #fdfdfd;
    border: 1px solid #ddd;
    color: #333;
    padding: 12px;
    font-size: 13px;
    margin-top: 10px;
    font-family: 'Courier New', Courier, monospace; 
}

@media (max-width: 768px) {
    .page-wrapper { flex-direction: column; }
    .sidebar { width: 100%; padding: 20px; border-right: none; border-bottom: 1px solid #ddd; min-height: auto; }
    .header-container { flex-direction: column; align-items: center; text-align: center; }
}