/* ============================================
   Modern Academic Personal Website Design
   ============================================ */

/* CSS Variables - Modern Color Palette - Optimized for Clarity */
:root {
    /* Primary Colors - Professional Blue (Higher Contrast) */
    --primary: #1e40af;
    --primary-dark: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-lighter: #dbeafe;
    
    /* Accent Colors */
    --accent: #6366f1;
    --accent-light: #818cf8;
    
    /* Text Colors - Pure Black */
    --text-primary: #000000;
    --text-secondary: #333333;
    --text-muted: #666666;
    --text-light: #999999;
    
    /* Background Colors - Clean and Consistent */
    --bg-primary: #f8f9fa;
    --bg-secondary: #f1f3f5;
    --bg-tertiary: #e9ecef;
    --bg-card: #ffffff;
    
    /* Border & Divider - Subtle but Visible */
    --border: #cbd5e1;
    --border-light: #e2e8f0;
    --divider: #cbd5e1;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing - Compact */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    
    /* Typography - Simple Clean Font Stack */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', Monaco, Consolas, monospace;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-weight: 450;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.011em; /* Slightly tighter letter spacing for modern look */
}

/* Container */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    background: rgba(248, 249, 250, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition);
}

.navbar .container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.02em;
    transition: var(--transition);
}

.nav-brand:hover {
    color: var(--primary-dark);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.dropdown-arrow {
    font-size: 0.7rem;
    transition: var(--transition);
    margin-left: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-dark);
    transition: width var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-dark);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: var(--transition);
    border-radius: var(--radius-full);
}

/* Dropdown Menu */
.nav-dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    min-width: 220px;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    list-style: none;
    padding: var(--spacing-sm) 0;
    margin: var(--spacing-xs) 0 0 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    z-index: 1000;
}

.nav-dropdown:hover .dropdown-menu,
.nav-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    }

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown:focus-within .dropdown-arrow {
    transform: rotate(180deg);
    }

.dropdown-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
    margin-left: var(--spacing-xs);
}

.dropdown-link:hover,
.dropdown-link.active {
    background: var(--bg-secondary);
    color: var(--primary-dark);
    font-weight: 600;
    border-left-color: var(--primary-dark);
    margin-left: 0;
    padding-left: var(--spacing-md);
}

/* ============================================
   Main Content
   ============================================ */
main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl) 0 var(--spacing-2xl) 0;
    background: linear-gradient(to bottom, var(--bg-primary) 0%, var(--bg-secondary) 50%, var(--bg-primary) 100%);
    position: relative;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Home Content Block - Continuous Layout */
.home-content-block {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    overflow: hidden;
}

.home-content-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 8px;
    background: linear-gradient(to right, var(--primary), var(--accent));
}

/* Profile Header - Inline Version (for home page) */
.profile-header-inline {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-lg);
    margin-bottom: 0;
    padding-bottom: var(--spacing-xl);
}

/* Profile Header (for other pages) */
.profile-header {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
    position: relative;
    overflow: hidden;
}

.profile-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 50%, var(--accent) 100%);
}

.profile-image {
    position: relative;
}

.profile-image .profile-photo {
    width: 160px;
    height: 160px;
    border-radius: var(--radius-md);
    object-fit: cover;
    border: 3px solid var(--primary-lighter);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.profile-image:hover .profile-photo {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}

.chinese-name-image {
    display: flex;
    align-items: center;
    justify-content: center;
}

.chinese-name-image img {
    width: auto;
    height: auto;
    max-width: 200px;
    max-height: 200px;
    border-radius: var(--radius-md);
    object-fit: contain;
    border: 3px solid var(--primary-lighter);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background: var(--bg-secondary);
}

.chinese-name-image:hover img {
    transform: scale(1.02);
    box-shadow: var(--shadow-xl);
}


.profile-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.profile-info h1 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.profile-info .title {
    font-size: 1.25rem;
    color: var(--primary-dark);
    font-weight: 700;
    margin: 0;
}

.profile-info .name-chinese {
    font-size: 1.5rem;
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}

.profile-info .affiliation {
    font-size: 1rem;
    color: var(--text-primary);
    font-weight: 500;
    margin: 0;
}

/* Contact Links - Unified Style */
.contact-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.contact-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.95rem;
}

.contact-link:hover {
    text-decoration: underline;
}

.contact-separator {
    color: var(--text-muted);
    margin: 0 var(--spacing-xs);
}

/* ============================================
   Content Sections
   ============================================ */
.content-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* Removed ::before pseudo-element for cleaner look */

/* Removed hover effects for cleaner look */

.content-section h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-sm) 0;
    padding-bottom: var(--spacing-xs);
    border-bottom: 3px solid var(--primary-dark);
    display: inline-block;
    letter-spacing: -0.02em;
}

.content-section h2:has(+ .publication-list) {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    padding-bottom: var(--spacing-xs);
}

.content-section h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.content-section p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--text-primary);
    font-size: 1rem;
}

.content-section ul:not(.awards-list):not(.services-list) {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
}

.content-section ul:not(.awards-list):not(.services-list) li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    color: var(--text-primary);
    padding-left: var(--spacing-xs);
}

.content-section a {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    border-bottom: 2px solid transparent;
    padding-bottom: 1px;
}

.content-section a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* About Section Special Styling */
.about-section {
    padding: var(--spacing-xl);
}

/* Content Divider */
.content-divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--border), transparent);
    margin: var(--spacing-xl) 0;
}

/* Statistics iframe */
.statistics-iframe {
    margin-top: var(--spacing-lg);
    width: 860px;
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
    min-height: 460px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.statistics-iframe iframe {
    width: 100%;
    height: 460px;
    border: none;
    display: block;
}

@media (max-width: 768px) {
    .statistics-iframe {
        width: 95%;
        min-height: 400px;
    }
    
    .statistics-iframe iframe {
        height: 400px;
    }
}

/* Video container */
.video-container {
    position: relative;
    width: 80%;
    padding-bottom: 45%; /* 16:9 aspect ratio adjusted for 80% width */
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin-top: var(--spacing-md);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

@media (max-width: 768px) {
    .video-container {
        padding-bottom: 56.25%;
    }
}

.intro-quote {
    margin-bottom: var(--spacing-md);
}
    opacity: 0.5;
}

.quote-text {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.7;
    margin: 0;
}

.intro-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.intro-content p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin: 0;
}

.personal-note {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    font-style: italic;
    color: var(--text-secondary);
}

/* ============================================
   Lists
   ============================================ */
.project-list,
.news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.project-list li,
.news-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.project-list li:last-child,
.news-list li:last-child {
    border-bottom: none;
}

.project-list li:hover,
.news-list li:hover {
    padding-left: var(--spacing-sm);
}

.news-list li {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.news-date {
    font-weight: 700;
    color: var(--primary-dark);
    min-width: 80px;
    flex-shrink: 0;
}

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

.services-list li {
    padding: var(--spacing-xs) 0;
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Timeline */
.timeline {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

.timeline li {
    position: relative;
    padding: var(--spacing-sm) 0 var(--spacing-sm) var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
    color: var(--text-primary);
}

.timeline li::before {
    content: '';
    position: absolute;
    left: -6px;
    top: var(--spacing-md);
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-dark);
    border: 3px solid var(--bg-card);
    box-shadow: var(--shadow);
}

.timeline .date {
    font-weight: 700;
    color: var(--primary-dark);
    display: inline-block;
    min-width: 180px;
    margin-right: var(--spacing-sm);
}

/* Awards List */
.awards-list {
    list-style: none;
    padding: 0;
    margin: 0;
    margin-left: 0 !important;
    padding-left: 0 !important;
}

.awards-list li {
    padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-lg);
    position: relative;
    color: var(--text-primary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-lg) !important;
}

.awards-list li::before {
    content: '🏆';
    position: absolute;
    left: 0;
    font-size: 1.1em;
    line-height: 1;
}

/* Services List */
.services-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.services-list li {
    padding: var(--spacing-xs) 0 var(--spacing-xs) var(--spacing-lg);
    position: relative;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.services-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: bold;
    font-size: 1.1rem;
}

/* Research Topics */
.research-topics {
    counter-reset: topic-counter;
    list-style: none;
    padding: 0;
    margin: 0;
}

.research-topics > li {
    counter-increment: topic-counter;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary);
    position: relative;
}

.research-topics > li::before {
    content: counter(topic-counter);
    position: absolute;
    left: -20px;
    top: var(--spacing-lg);
    width: 40px;
    height: 40px;
    background: var(--primary-dark);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    box-shadow: var(--shadow-md);
}

.research-topics ol {
    margin-top: var(--spacing-md);
    padding-left: var(--spacing-xl);
}

.research-topics ol li {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

/* ============================================
   Project Cards
   ============================================ */
.project-card {
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-top: 2px solid var(--primary);
    transition: var(--transition);
}

.project-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-top-color: var(--primary-dark);
}

.project-card h3 {
    color: var(--primary);
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.project-card p {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    line-height: 1.7;
}

.project-card ul {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.project-card ul li {
    margin-bottom: var(--spacing-sm);
}

/* ============================================
   Page Headers
   ============================================ */
h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--primary-dark);
    letter-spacing: -0.03em;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    padding: var(--spacing-md) 0;
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 60px;
        flex-direction: column;
        background: var(--bg-card);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-md) 0;
        gap: 0;
        border-bottom: 1px solid var(--border);
        max-height: calc(100vh - 60px);
        overflow-y: auto;
        align-items: center;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-dropdown {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .nav-dropdown .nav-link {
        justify-content: center;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--border-light);
        margin: 0;
        padding: 0;
        background: var(--bg-secondary);
        display: none;
        min-width: 100%;
    }

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

    .dropdown-link {
        padding: var(--spacing-sm) var(--spacing-lg);
        text-align: center;
    }

    .nav-toggle {
        display: flex;
    }

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

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

        .profile-header,
        .profile-header-inline {
            grid-template-columns: 1fr;
        text-align: center;
            gap: var(--spacing-lg);
        }
        
        .home-content-block {
            padding: var(--spacing-lg);
    }

        .profile-image {
            display: flex;
            justify-content: center;
        }

        .profile-image .profile-photo {
            width: 140px;
            height: 140px;
    }

        .profile-header,
        .profile-header-inline {
            grid-template-columns: 1fr;
        text-align: center;
            gap: var(--spacing-lg);
    }

        .home-content-block {
            padding: var(--spacing-lg);
        }

    .chinese-name-image {
        display: flex;
        justify-content: center;
    }

    .chinese-name-image img {
        width: auto;
        height: auto;
        max-width: 180px;
        max-height: 180px;
    }

    .profile-info h1 {
        font-size: 1.4rem;
    }

    .contact-links {
        justify-content: center;
    }

    .about-section {
        padding: var(--spacing-lg);
    }

    .intro-quote {
        margin-bottom: var(--spacing-sm);
    }

    .quote-text {
        font-size: 0.95rem;
    }

    .intro-content p {
        font-size: 0.95rem;
        line-height: 1.7;
    }

    .contact-row {
        justify-content: center;
        width: 100%;
    }

    h1 {
        font-size: 2rem;
    }

    .content-section h2 {
        font-size: 1.5rem;
    }

    .timeline .date {
        display: block;
        margin-bottom: var(--spacing-xs);
    }

    .news-list li {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .news-date {
        min-width: auto;
}

    .container {
        padding: 0 var(--spacing-sm);
    }
    }

@media (max-width: 480px) {
    .profile-info h1 {
        font-size: 1.25rem;
    }

    .contact-row {
        flex-direction: column;
        width: 100%;
    }

    .content-section {
        padding: var(--spacing-md);
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .navbar,
    .footer {
        display: none;
    }

    .content-section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border);
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.internal-link {
    color: var(--primary-dark);
    font-weight: 600;
    text-decoration: underline;
}

.internal-link:hover {
    color: var(--primary);
    text-decoration: none;
}

.text-muted {
    color: var(--text-muted);
}

.text-secondary {
    color: var(--text-secondary);
}

/* ============================================
   Blog Styles
   ============================================ */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.blog-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-light);
    padding: var(--spacing-xl);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

/* Removed blog-card hover effects for cleaner look */

.blog-card-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
}

.blog-card-header h2 {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
}

.blog-card-header h2 a {
    color: var(--text-primary);
    text-decoration: none;
    transition: var(--transition);
}

.blog-card-header h2 a:hover {
    color: var(--primary-dark);
}

.blog-date {
    display: inline-block;
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.blog-card-content {
    margin-bottom: var(--spacing-md);
}

.blog-card-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    font-size: 1rem;
    margin: 0;
}

.blog-card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
}

.blog-read-more {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    }

.blog-read-more:hover {
    color: var(--primary);
    gap: var(--spacing-sm);
}

/* Blog Single Post */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
}

.blog-post-header {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--border-light);
}

.blog-post-header h1 {
    margin-bottom: var(--spacing-md);
    font-size: 2.5rem;
    line-height: 1.2;
    border-bottom: none;
    padding-bottom: 0;
}

.blog-post-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.95rem;
}

.blog-post-meta .lang-switch {
    color: var(--primary);
    text-decoration: none;
    padding: 2px 8px;
    border: 1px solid var(--primary);
    border-radius: 4px;
    font-size: 0.85rem;
    transition: all 0.2s ease;
}

.blog-post-meta .lang-switch:hover {
    background: var(--primary);
    color: white;
}

.blog-post-content {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-primary);
    padding: 0;
    background: transparent;
    box-shadow: none;
    border: none;
}

.blog-post-content::before {
    display: none;
}

.blog-post-content h2 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-xl) 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border);
}

.blog-post-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
}

.blog-post-content h4 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.blog-post-content p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.blog-post-content ul,
.blog-post-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    line-height: 1.7;
}

.blog-post-content ul li,
.blog-post-content ol li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.blog-post-content strong {
    color: var(--text-primary);
    font-weight: 550;
}

.blog-post-content blockquote {
    border-left: 3px solid var(--primary);
    padding-left: var(--spacing-md);
    margin: var(--spacing-md) 0;
    color: var(--text-secondary);
    font-style: normal;
    background: var(--bg-secondary);
    padding: var(--spacing-md);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.blog-post-content blockquote strong {
    color: var(--text-primary);
}

.blog-post-content hr {
    border: none;
    border-top: 1px solid var(--border-light);
    margin: var(--spacing-lg) 0;
}

.blog-post-content a {
    color: var(--primary-dark);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    padding-bottom: 1px;
    transition: var(--transition);
}

.blog-post-content a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Responsive Blog Styles */
@media (max-width: 768px) {
    .blog-card {
        padding: var(--spacing-lg);
    }

    .blog-card-header h2 {
        font-size: 1.3rem;
    }

    .blog-post-header h1 {
        font-size: 2rem;
    }

    .blog-post-content {
        font-size: 0.95rem;
    }

    .blog-post-content h2 {
        font-size: 1.2rem;
    }

    .blog-post-content h3 {
        font-size: 1.05rem;
    }

    .blog-post-content h4 {
        font-size: 1rem;
    }
}

/* Publications Section (within home-content-block) */
.publications-section {
    padding-top: var(--spacing-md);
    }

.publications-section h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-xs);
    border-bottom: 3px solid var(--primary-dark);
    display: inline-block;
}

/* Publications Section (within home-content-block) */
.publications-section {
    padding-top: var(--spacing-md);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.publications-section h2 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 var(--spacing-md) 0;
    padding-bottom: var(--spacing-xs);
    border-bottom: 3px solid var(--primary-dark);
    display: inline-block;
}

/* ============================================
        Featured Publications
        ============================================ */
.publication-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.publication-item {
    display: flex;
    flex-wrap: nowrap;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
}

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

.publication-item:hover {
    padding-left: var(--spacing-xs);
}

.publication-title {
    font-size: 0.9rem;
    line-height: 1.4;
    flex-shrink: 1;
    min-width: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.publication-title a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.publication-title a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.publication-meta {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--spacing-xs);
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.8rem;
    flex-shrink: 0;
    white-space: nowrap;
}

.publication-authors,
.publication-venue,
.publication-year,
.publication-citations {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.publication-venue {
    font-style: italic;
}

.publication-year {
    font-weight: 500;
}

.publication-citations {
    color: var(--primary-dark);
    font-weight: 600;
}

.publication-link-inline {
    color: var(--primary-dark);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    padding: 4px var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    transition: var(--transition);
    white-space: nowrap;
    flex-shrink: 0;
    display: inline-block;
    min-width: fit-content;
}

.publication-link-inline:hover {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}

.publication-links {
    margin-top: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.publication-links a {
    color: var(--primary-dark);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    transition: var(--transition);
}

.publication-links a:hover {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}

.publication-footer {
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
    text-align: left;
}

.publication-footer p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.publication-footer a {
    color: var(--primary-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.publication-footer a:hover {
    color: var(--primary);
    text-decoration: underline;
}

/* ============================================
   Clean Homepage Styles
   ============================================ */
.home-content {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
}

.profile-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.profile-section .profile-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.chinese-art-section {
    text-align: center;
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.chinese-art-section .chinese-art {
    width: 360px;
    height: auto;
    object-fit: contain;
}

.chinese-art-section .chinese-art-caption {
    margin-top: var(--spacing-sm);
    color: #8B7355;
    font-size: 0.9rem;
    font-style: italic;
}

.profile-section .profile-info {
    flex: 1;
}

.profile-section .profile-info h1 {
    font-size: 1.5rem;
    font-weight: 500;
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-primary);
    border-bottom: none;
    padding-bottom: var(--spacing-xs);
    position: relative;
    display: inline-block;
}

.profile-section .profile-info h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 160px;
    height: 3px;
    background: var(--primary-dark);
}

.profile-section .contact-links {
    font-size: 0.95rem;
    color: var(--text-primary);
    margin: 0;
}

.profile-section .contact-links a {
    color: #1e40af;
    text-decoration: none;
}

.profile-section .contact-links a:hover {
    text-decoration: underline;
}


.about-section {
    margin-bottom: var(--spacing-xl);
    max-width: 760px;
    margin-left: auto;
    margin-right: auto;
}

.about-section p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.about-section p:last-child {
    margin-bottom: 0;
}

.photo-section {
    margin-bottom: var(--spacing-xl);
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.photo-section img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
}

.photo-section .photo-caption {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    font-style: italic;
    color: #8B7355;
}

.publications-section h2 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

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

.publication-list li {
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    line-height: 1.5;
}

.publication-list li > a {
    color: #1e40af;
    text-decoration: none;
}

.publication-list li > a:hover {
    text-decoration: underline;
}

.publication-list li a {
    color: #1e40af;
    text-decoration: none;
}

.publication-list li a:hover {
    text-decoration: underline;
}

.pub-footer {
    margin-top: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.pub-footer a {
    color: #1e40af;
    text-decoration: none;
}

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

/* Responsive */
@media (max-width: 768px) {
    .profile-section {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .profile-section .chinese-art {
        order: -1;
    }
    
    .photo-section img {
        max-width: 90%;
    }
}