/* CSS Variables for Theme Support */
:root {
    /* Light Theme Colors */
    --primary-color: #2D5A27;
    --secondary-color: #1E40AF;
    --accent-color: #059669;
    --background-color: #FFFFFF;
    --surface-color: #F8FAFC;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border-color: #E5E7EB;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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);
    --gradient-primary: linear-gradient(135deg, #2D5A27 0%, #059669 100%);
    --gradient-secondary: linear-gradient(135deg, #1E40AF 0%, #3B82F6 100%);
}

/* Dark Theme Colors */
[data-theme="dark"] {
    --primary-color: #4ADE80;
    --secondary-color: #60A5FA;
    --accent-color: #10B981;
    --background-color: #0F172A;
    --surface-color: #1E293B;
    --text-primary: #F1F5F9;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --border-color: #334155;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --gradient-primary: linear-gradient(135deg, #4ADE80 0%, #10B981 100%);
    --gradient-secondary: linear-gradient(135deg, #60A5FA 0%, #3B82F6 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(248, 250, 252, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: all 0.3s ease;
}

[data-theme="dark"] .navbar {
    background: rgba(30, 41, 59, 0.95);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}
/* Add this to your CSS file */
.hero .container {
    max-width: 1400px; /* You can adjust this value, e.g., 1600px or 90vw */
}
/* Modify this existing rule in your CSS */
.container {
    max-width: 1400px; /* Changed from 1200px */
    margin: 0 auto;
    padding: 0 2rem;
}
.nav-link:hover {
    color: var(--primary-color);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

.theme-toggle {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.theme-toggle:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.1);
}

/* Hero Section - Full Screen */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    color: white;
    position: relative;
    overflow: hidden;
    padding-top: 100px; /* <--- 在这里添加这一行 */
    box-sizing: border-box; /* <--- 建议也添加这行，确保内边距不会增加总高度 */
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #2D5A27 0%, #059669 25%, #1E40AF 75%, #3B82F6 100%);
    z-index: -2;
}

.gradient-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.1);
    z-index: -1;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 20s infinite linear;
}

.shape-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: -5s;
}

.shape-3 {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: -10s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 30%;
    right: 30%;
    animation-delay: -15s;
}

@keyframes float {
    0% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.7;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 1;
    }
    100% {
        transform: translateY(0px) rotate(360deg);
        opacity: 0.7;
    }
}

/* Three Column Layout */
.three-column-layout {
    display: grid;
    grid-template-columns: 250px 2fr 450px; /* Increased the right column to 420px */
    gap: 2.5rem;
    align-items: start;
    position: relative;
    z-index: 1;
    min-height: calc(100vh - 140px);
}

.left-column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    animation: slideInLeft 1s ease-out;
}

.center-column {
    display: flex;
    flex-direction: column;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.3s both;
    min-width: 0; /* Allow text to wrap properly */
}

.right-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: slideInRight 1s ease-out;
}

.profile-image {
    position: relative;
}

.profile-frame {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto;
}

.profile-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    border: 6px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.profile-glow {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border-radius: 50%;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.2), rgba(255, 255, 255, 0.05));
    animation: pulse 2s infinite;
    z-index: 1;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.05);
        opacity: 1;
    }
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(45deg, #FFFFFF, #E0F2FE);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 2rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out 0.6s both;
}

/* Right Section Styles */
.section-subtitle {
    font-size: 1.3rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1rem;
    text-align: center;
}

.research-section {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 0.1rem;
    animation: fadeInUp 1s ease-out 0.8s both;
    height: fit-content;
}

.education-section {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 0.1rem;
    animation: fadeInUp 1s ease-out 1s both;
    height: fit-content;
}

/* Research Tags */
.research-tags {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    justify-content: center;
}

.research-tag {
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    cursor: default;
}

.research-tag:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Hero Buttons */
.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 1s both;
}

.btn {
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: white;
    backdrop-filter: blur(10px);
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: white;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

/* Education Section on Homepage */
.education-section {
    margin-top: 3rem;
    animation: fadeInUp 1s ease-out 1.2s both;
}

.education-title {
    font-size: 1.8rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: rgba(255, 255, 255, 0.7);
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -4px;
    width: 10px;
    height: 10px;
    border-right: 2px solid rgba(255, 255, 255, 0.7);
    border-bottom: 2px solid rgba(255, 255, 255, 0.7);
    transform: rotate(45deg);
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* Animation Keyframes */
@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.social-links {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
    justify-content: center;
    max-width: 200px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.social-link img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

/* Sections */
.section {
    padding: 80px 0;
}

.section:nth-child(even) {
    background: var(--surface-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Education Timeline - Homepage Version */
.education-timeline {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
}

.education-timeline::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.8), rgba(255, 255, 255, 0.3));
}

.timeline-item {
    position: relative;
    margin-bottom: 1.2rem;
    padding-left: 45px;
    opacity: 0;
    transform: translateX(-30px);
    animation: slideInTimeline 0.8s ease-out forwards;
}

.timeline-item:nth-child(1) {
    animation-delay: 0.2s;
}

.timeline-item:nth-child(2) {
    animation-delay: 0.4s;
}

@keyframes slideInTimeline {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.timeline-marker {
    position: absolute;
    left: 10px;
    top: 6px;
    width: 16px;
    height: 16px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
    animation: pulse 2s infinite;
}

.timeline-content h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 0.3rem;
    line-height: 1.4;
}

.degree {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.2rem;
    line-height: 1.4;
}

.period {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.3rem;
    font-size: 0.85rem;
}

.status {
    display: inline-block;
    padding: 0.2rem 0.8rem;
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 15px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    backdrop-filter: blur(10px);
}

/* Research Grid */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.research-card {
    background: var(--background-color);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.research-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.research-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.research-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* News Section */
.news-container {
    max-width: 800px;
    margin: 0 auto;
}

.news-item {
    background: var(--background-color);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.news-item:hover {
    border-color: var(--primary-color);
    transform: translateX(5px);
}

.news-type {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.8rem;
}

.news-tag {
    background: var(--gradient-primary);
    color: white;
}

.blog-tag {
    background: var(--gradient-secondary);
    color: white;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.news-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Publications & Projects */
.subsection {
    margin-bottom: 4rem;
}

.subsection-title {
    font-size: 2rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 2rem;
    text-align: center;
}

.pub-project-grid {
    display: grid;
    gap: 2rem;
}

.pub-item, .project-item {
    background: var(--background-color);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.pub-item:hover, .project-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.pub-thumbnail, .project-thumbnail {
    height: 200px;
    overflow: hidden;
}

.pub-thumbnail img, .project-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.pub-item:hover .pub-thumbnail img,
.project-item:hover .project-thumbnail img {
    transform: scale(1.05);
}

.pub-content, .project-content {
    padding: 1.5rem;
}

.pub-title, .project-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.pub-authors {
    color: var(--text-secondary);
    margin-bottom: 0.3rem;
}

.pub-venue {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 0.8rem;
}

.pub-abstract, .project-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.pub-links, .project-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.pub-link, .project-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.pub-link:hover, .project-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.link-icon {
    width: 16px;
    height: 16px;
}

.project-tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.tech-tag {
    padding: 0.3rem 0.8rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Gallery */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: var(--surface-color);
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    aspect-ratio: 1;
}

.gallery-item.featured {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item.placeholder {
    background: linear-gradient(45deg, 
        var(--surface-color) 25%, 
        rgba(255,255,255,0.05) 25%, 
        rgba(255,255,255,0.05) 50%, 
        var(--surface-color) 50%, 
        var(--surface-color) 75%, 
        rgba(255,255,255,0.05) 75%);
    background-size: 20px 20px;
    opacity: 0.3;
}

.gallery-item:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: var(--shadow-lg);
    z-index: 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 15px;
    }
    
    .gallery-item.featured {
        grid-column: span 2;
        grid-row: span 2;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 10px;
    }
    
    .gallery-item.featured {
        grid-column: span 1;
        grid-row: span 1;
    }
}

/* Footer */
.footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
    
    .three-column-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .left-column {
        order: 2;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 2rem;
    }
    
    .center-column {
        order: 1;
    }
    
    .right-column {
        order: 3;
        gap: 1.5rem;
    }
    
    .profile-frame {
        width: 150px;
        height: 150px;
    }
    
    .social-links {
        max-width: none;
        flex-wrap: wrap;
    }
    
    .research-section, .education-section {
        padding: 1rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .research-tags {
        justify-content: center;
    }
    
    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .education-timeline {
        max-width: 100%;
    }
    
    .education-timeline::before {
        left: 12px;
    }
    
    .timeline-item {
        padding-left: 35px;
        margin-bottom: 0.8rem;
    }
    
    .timeline-marker {
        left: 6px;
        width: 12px;
        height: 12px;
    }
    
    .timeline-content h4 {
        font-size: 0.85rem;
        line-height: 1.2;
    }
    
    .degree {
        font-size: 0.75rem;
        line-height: 1.2;
    }
    
    .period {
        font-size: 0.7rem;
    }
    
    .research-section, .education-section {
        padding: 0.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }
    
    .research-tag {
        padding: 0.3rem 0.6rem;
        font-size: 0.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .education-timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-marker {
        left: 10px;
    }
    
    .research-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .profile-info h1 {
        font-size: 1.8rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .news-item, .pub-content, .project-content {
        padding: 1rem;
    }
    
    .pub-links, .project-links {
        flex-direction: column;
    }
    
    .pub-link, .project-link {
        justify-content: center;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading animation for images */
img {
    opacity: 0;
    animation: fadeIn 0.5s ease-in-out forwards;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--surface-color);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}