/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=EB+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600;700&display=swap');

/* Import monospace font */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

:root {
    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Light theme variables */
    --bg-primary: #FFFFFF;
    --bg-secondary: #FAFAFA;
    --bg-elevated: #FFFFFF;
    --text-primary: #0F172A;
    --text-secondary: #475569;
    --text-muted: #64748B;
    --accent-color: #2563EB;
    --accent-light: #3B82F6;
    --accent-dark: #1D4ED8;
    --border-color: #E2E8F0;
    --border-light: #F1F5F9;
    --nav-bg: #FFFFFF;
    --sidebar-bg: #FAFAFA;
    --code-bg: #F1F5F9;
    --citation-bg: #F8FAFC;
    --link-color: #2563EB;
    --link-hover: #1D4ED8;
    --success-color: #059669;
    --warning-color: #D97706;
    --error-color: #DC2626;
}

[data-theme="dark"] {
    /* Dark theme variables */
    --bg-primary: #0A0A0A;
    --bg-secondary: #111111;
    --bg-elevated: rgba(255, 255, 255, 0.05);
    --text-primary: #F8FAFC;
    --text-secondary: #CBD5E1;
    --text-muted: #94A3B8;
    --accent-color: #60A5FA;
    --accent-light: #93C5FD;
    --accent-dark: #3B82F6;
    --border-color: rgba(255, 255, 255, 0.1);
    --border-light: rgba(255, 255, 255, 0.05);
    --nav-bg: #0A0A0A;
    --sidebar-bg: rgba(255, 255, 255, 0.03);
    --code-bg: #1E293B;
    --citation-bg: rgba(255, 255, 255, 0.05);
    --link-color: #60A5FA;
    --link-hover: #93C5FD;
    --success-color: #10B981;
    --warning-color: #F59E0B;
    --error-color: #EF4444;
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    margin: 0;
    padding: 0;
    background: var(--bg-primary);
    color: var(--text-primary);
    max-width: none;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.01em;
}

/* Typography Enhancement */
h1, h2, h3, h4, h5, h6 {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2.25rem; margin-bottom: var(--space-lg); }
h2 { font-size: 1.75rem; margin-bottom: var(--space-md); margin-top: var(--space-xl); }
h3 { font-size: 1.375rem; margin-bottom: var(--space-sm); margin-top: var(--space-lg); }
h4 { font-size: 1.125rem; margin-bottom: var(--space-sm); margin-top: var(--space-md); }

/* Technical elements use monospace */
code, pre, .nav-title, .theme-toggle {
    font-family: 'JetBrains Mono', monospace;
}

/* Body text enhancement */
p {
    margin-bottom: var(--space-md);
    line-height: 1.7;
    color: var(--text-secondary);
}

/* Links enhancement */
a {
    color: var(--link-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--link-hover);
}

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.reading-progress.visible {
    opacity: 1;
}

.reading-progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    width: 0%;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(37, 99, 235, 0.3);
}

[data-theme="dark"] .reading-progress-bar {
    background: linear-gradient(90deg, var(--accent-color), var(--accent-light));
    box-shadow: 0 0 10px rgba(96, 165, 250, 0.3);
}

/* Table of Contents */
.table-of-contents {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-lg);
    margin: var(--space-xl) 0;
    max-width: 100%;
}

.table-of-contents h3 {
    margin: 0 0 var(--space-md) 0;
    font-size: 1.1rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-light);
    padding-bottom: var(--space-sm);
}

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

.toc-item {
    margin-bottom: var(--space-xs);
}

.toc-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-xs) 0;
    font-size: 0.9rem;
    line-height: 1.4;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
    padding-left: var(--space-sm);
}

.toc-link:hover {
    color: var(--accent-color);
    border-left-color: var(--accent-color);
    padding-left: var(--space-md);
}

/* TOC Hierarchy */
.toc-h1 .toc-link {
    font-weight: 600;
    font-size: 1rem;
}

.toc-h2 .toc-link {
    padding-left: var(--space-md);
    font-weight: 500;
}

.toc-h3 .toc-link {
    padding-left: var(--space-lg);
    font-size: 0.85rem;
}

.toc-h4 .toc-link,
.toc-h5 .toc-link,
.toc-h6 .toc-link {
    padding-left: var(--space-xl);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Active TOC state (when scrolled to section) */
.toc-link.active {
    color: var(--accent-color);
    border-left-color: var(--accent-color);
    background: rgba(37, 99, 235, 0.05);
    font-weight: 600;
}

[data-theme="dark"] .toc-link.active {
    background: rgba(96, 165, 250, 0.1);
}

/* Responsive TOC */
@media (max-width: 768px) {
    .table-of-contents {
        margin: var(--space-lg) 0;
        padding: var(--space-md);
    }
    
    .toc-h2 .toc-link,
    .toc-h3 .toc-link,
    .toc-h4 .toc-link,
    .toc-h5 .toc-link,
    .toc-h6 .toc-link {
        padding-left: var(--space-sm);
    }
}

/* Related Posts Section */
.related-posts {
    margin-top: var(--space-4xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
}

.related-posts h2 {
    margin-bottom: var(--space-xl);
    color: var(--text-primary);
    font-size: 1.5rem;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.related-post-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-lg);
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
    display: block;
}

.related-post-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.related-post-card h3 {
    margin: 0 0 var(--space-sm) 0;
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.3;
}

.related-post-card p {
    margin: 0 0 var(--space-md) 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.related-post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.related-post-categories {
    display: flex;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
}

.related-category-tag {
    background: var(--accent-color);
    color: white;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 500;
}

.related-posts-empty {
    text-align: center;
    color: var(--text-muted);
    font-style: italic;
    padding: var(--space-xl);
}

/* Dark theme adjustments */
[data-theme="dark"] .related-post-card {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

[data-theme="dark"] .related-post-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

/* Responsive related posts */
@media (max-width: 768px) {
    .related-posts-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .related-post-card {
        padding: var(--space-md);
    }
}

/* Social Share Section */
.social-share {
    margin: var(--space-2xl) 0;
    padding: var(--space-xl);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    text-align: center;
}

.social-share h3 {
    margin: 0 0 var(--space-lg) 0;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.share-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--space-sm);
    max-width: 600px;
    margin: 0 auto;
}

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
    cursor: pointer;
    position: relative;
}

.share-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.share-button i {
    font-size: 1.1rem;
}

/* Platform-specific colors */
.share-button[data-platform="twitter"]:hover {
    background: #1DA1F2;
    color: white;
    border-color: #1DA1F2;
}

.share-button[data-platform="linkedin"]:hover {
    background: #0077B5;
    color: white;
    border-color: #0077B5;
}

.share-button[data-platform="facebook"]:hover {
    background: #1877F2;
    color: white;
    border-color: #1877F2;
}

.share-button[data-platform="reddit"]:hover {
    background: #FF4500;
    color: white;
    border-color: #FF4500;
}

.share-button[data-platform="email"]:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.share-button[data-platform="copy"]:hover {
    background: var(--success-color);
    color: white;
    border-color: var(--success-color);
}

/* Copy confirmation */
.share-button.copied::after {
    content: "Copied!";
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--success-color);
    color: white;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    animation: fadeInOut 2s ease-in-out;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0; transform: translateX(-50%) translateY(5px); }
    20%, 80% { opacity: 1; transform: translateX(-50%) translateY(0); }
}

/* Dark theme adjustments */
[data-theme="dark"] .social-share {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

[data-theme="dark"] .share-button {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

/* Comments Section */
.comments-section {
    margin: var(--space-2xl) 0;
    padding: var(--space-lg);
    text-align: center;
}

.comments-section h2 {
    margin: 0 0 var(--space-sm) 0;
    color: var(--text-primary);
    font-size: 1.3rem;
}

.comments-info {
    margin: 0 0 var(--space-lg) 0;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.comments-actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
}

.comments-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.comments-btn.primary {
    background: var(--accent-color);
    color: white;
}

.comments-btn.primary:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
}

.comments-btn.secondary {
    background: transparent;
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.comments-btn.secondary:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-1px);
}


/* Responsive comments */
@media (max-width: 768px) {
    .comments-section {
        padding: var(--space-md);
        margin: var(--space-lg) 0;
    }
    
    .comments-actions {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .comments-btn {
        text-align: center;
        justify-content: center;
    }
}

/* Courses Page Styles */
.courses-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-2xl);
}

.courses-section h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    text-align: center;
}

.courses-intro {
    font-size: 1.1rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-2xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.courses-area {
    margin-bottom: var(--space-2xl);
}

.courses-area h2 {
    font-size: 1.8rem;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: var(--space-sm);
}

/* Course List (Horizontal Layout) */
.course-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.course-card.horizontal {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0;
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: row;
    min-height: 200px;
}

.course-card.horizontal .course-image {
    width: 300px;
    min-width: 300px;
    height: auto;
    overflow: hidden;
    position: relative;
}

.course-card.horizontal .course-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.course-card.horizontal:hover .course-img {
    transform: scale(1.05);
}

.course-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: var(--space-xl);
}

.course-header {
    margin-bottom: var(--space-md);
}

.course-details {
    flex: 1;
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.course-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin: 0;
    flex: 1;
}

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

.course-header h3 a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.course-description {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

.course-info {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.course-level,
.course-semester {
    background: var(--bg-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.course-topics {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.topic-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.topic-tag:hover {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--text-muted);
}

/* Past Courses */
.past-courses {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.past-course-item {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-lg);
}

.past-course-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-sm);
}

.past-course-header h4 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.past-course-semester {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

.past-course-description {
    margin: 0;
    color: var(--text-secondary);
}


/* Resources Section */
.resources-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.resource-category {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--space-lg);
}

.resource-category h3 {
    margin: 0 0 var(--space-md) 0;
    color: var(--text-primary);
    font-size: 1.2rem;
}

.resource-category p {
    margin: var(--space-sm) 0;
    color: var(--text-secondary);
}

.resource-category ul {
    margin: 0;
    padding-left: var(--space-lg);
    color: var(--text-secondary);
}

.resource-category li {
    margin-bottom: var(--space-xs);
}

/* Responsive Design for Courses */
@media (max-width: 768px) {
    .courses-container {
        padding: var(--space-lg);
    }
    
    .course-card.horizontal {
        flex-direction: column;
        min-height: auto;
    }
    
    .course-card.horizontal .course-image {
        width: 100%;
        min-width: 100%;
        height: 150px;
    }
    
    .course-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .course-code {
        margin: var(--space-sm) 0 0 0;
    }
    
    .resources-section {
        grid-template-columns: 1fr;
    }
    
    .past-course-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Course Page Navigation */
.course-navigation {
    margin-top: var(--space-2xl);
    padding: var(--space-lg);
    border-top: 1px solid var(--border-color);
}

.back-to-courses {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-to-courses:hover {
    color: var(--accent-dark);
    transform: translateX(-4px);
}

.back-to-courses i {
    font-size: 0.9rem;
}

/* Under Construction Page */
.under-construction {
    text-align: center;
    padding: var(--space-4xl) var(--space-xl);
    max-width: 600px;
    margin: 0 auto;
}

.construction-icon {
    font-size: 4rem;
    color: var(--accent-color);
    margin-bottom: var(--space-xl);
}

.under-construction h1 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-sm);
}

.under-construction h2 {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    font-weight: 400;
}

.construction-message {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.construction-note {
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
    line-height: 1.5;
}

.construction-status {
    padding: var(--space-md);
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: inline-block;
}

.status-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Responsive construction page */
@media (max-width: 768px) {
    .under-construction {
        padding: var(--space-2xl) var(--space-md);
    }
    
    .construction-icon {
        font-size: 3rem;
    }
    
    .under-construction h1 {
        font-size: 2rem;
    }
    
    .under-construction h2 {
        font-size: 1.3rem;
    }
}

/* Loading States */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    animation: spin 1s ease-in-out infinite;
}

.loading-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-xl);
    color: var(--text-muted);
}

.loading-large {
    width: 40px;
    height: 40px;
    border-width: 3px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Error States */
.error-container {
    background: rgba(220, 38, 38, 0.1);
    border: 1px solid rgba(220, 38, 38, 0.2);
    border-radius: 8px;
    padding: var(--space-lg);
    margin: var(--space-md) 0;
    text-align: center;
}

.error-title {
    color: var(--error-color);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.error-message {
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.error-retry {
    background: var(--error-color);
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.2s ease;
}

.error-retry:hover {
    background: #b91c1c;
}

/* Content fade-in animation */
.fade-in {
    animation: fadeIn 0.5s ease-out;
}

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

/* Skeleton loading for blog posts */
.skeleton {
    background: linear-gradient(90deg, var(--bg-elevated) 25%, var(--border-light) 50%, var(--bg-elevated) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
}

.skeleton-post {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border-color);
}

.skeleton-title {
    height: 1.5rem;
    width: 70%;
    margin-bottom: var(--space-md);
    border-radius: 4px;
}

.skeleton-description {
    height: 1rem;
    width: 100%;
    margin-bottom: var(--space-sm);
    border-radius: 4px;
}

.skeleton-description:last-child {
    width: 80%;
}

@keyframes loading {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

/* Accessibility Improvements */
:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Main Container */
.wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Navigation Styles */
.nav-container {
    padding: var(--space-md) 0;
    margin-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-title {
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.nav-title a {
    text-decoration: none;
    color: var(--text-primary);
}

.nav-title a:hover {
    opacity: 0.7;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.contact-links {
    display: flex;
    gap: var(--space-xs);
    margin-left: var(--space-xs);
}

.nav-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-button {
    color: var(--text-primary);
    text-decoration: none;
    padding: var(--space-xs) 0;
    font-size: 0.9rem;
    letter-spacing: 0.01em;
}

.nav-button:hover {
    opacity: 0.7;
}

.nav-button.active {
    border-bottom: 1px solid var(--text-primary);
}

.nav-spacer {
    width: var(--space-sm);
}

.theme-toggle {
    margin-left: var(--space-sm);
}

/* Two-Column Layout */
.main-container {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding-top: var(--space-3xl);
    gap: var(--space-xl);
    position: relative;
}

/* Blog Container */
.blog-container {
    display: flex;
    gap: var(--space-2xl);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-xl);
}

/* Sidebar */
.sidebar {
    width: 250px;
    flex-shrink: 0;
    position: sticky;
    top: var(--space-xl);
    height: fit-content;
    padding-right: var(--space-xl);
    border-right: 1px solid var(--border-color);
}

/* Search functionality */
.search-section {
    margin-bottom: var(--space-xl);
}

.search-container {
    position: relative;
    margin-bottom: var(--space-md);
}

.search-input {
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    padding-left: var(--space-2xl);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

.search-icon {
    position: absolute;
    left: var(--space-sm);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

/* Search results highlight */
.search-highlight {
    background: rgba(37, 99, 235, 0.2);
    color: var(--accent-dark);
    padding: 0.1em 0.2em;
    border-radius: 3px;
}

[data-theme="dark"] .search-highlight {
    background: rgba(96, 165, 250, 0.3);
    color: var(--accent-light);
}

/* Search Filters */
.search-filters {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border-light);
}

.filter-group {
    margin-bottom: var(--space-md);
}

.filter-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.filter-select {
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    transition: border-color 0.2s ease;
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.clear-filters-btn {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    width: 100%;
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.clear-filters-btn:hover {
    background: var(--error-color);
    color: white;
    border-color: var(--error-color);
}

.clear-filters-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Active filters indicator */
.filter-active {
    position: relative;
}

.filter-active::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 8px;
    width: 6px;
    height: 6px;
    background: var(--accent-color);
    border-radius: 50%;
    transform: translateY(-50%);
}

/* Search suggestions */
.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 4px 4px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.search-suggestion {
    padding: var(--space-sm);
    cursor: pointer;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.85rem;
    transition: background 0.2s ease;
}

.search-suggestion:hover,
.search-suggestion.highlighted {
    background: var(--bg-elevated);
}

.search-suggestion:last-child {
    border-bottom: none;
}

.suggestion-match {
    font-weight: 600;
    color: var(--accent-color);
}

/* Categories section spacing */
.categories-section {
    margin-top: var(--space-lg);
}

/* Search results styling */
.search-results-header {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-light);
}

.search-results-count {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
    font-style: italic;
}

.search-no-results {
    text-align: center;
    padding: var(--space-2xl);
    color: var(--text-muted);
}

.search-no-results p:first-child {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.search-suggestion {
    font-size: 0.9rem;
    margin: 0;
}

.sidebar-title {
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

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

.sidebar-list li {
    margin-bottom: 0.8rem;
}

.sidebar-list a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
}

.sidebar-list a:hover {
    opacity: 0.7;
}

/* Blog List Container */
.blog-list-container {
    flex: 1;
    max-width: 800px;
}

/* Blog Post */
.blog-post {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.blog-post:last-child {
    border-bottom: none;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: var(--space-sm) 0 var(--space-md) 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    flex-wrap: wrap;
}

.post-date {
    color: var(--text-secondary);
    font-weight: 500;
}

.reading-time {
    color: var(--text-muted);
    font-style: italic;
}

.reading-time::before {
    content: "•";
    margin-right: var(--space-xs);
    color: var(--text-muted);
}

.blog-post h2 {
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}

.blog-post h2 a {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
}

.blog-post h2 a:hover {
    opacity: 0.7;
}

.blog-post p {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 0;
    line-height: 1.4;
}

/* Remove blog post categories styling */
.blog-post .categories-list {
    display: none;
}

/* Blog Post Categories */
.blog-post .categories-list {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.category-tag {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.category-tag:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

/* Categories */
.categories-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.categories-list li {
    margin-bottom: 0.5rem;
}

.categories-list a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
}

.categories-list a:hover {
    color: var(--text-primary);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 3rem;
    font-family: 'Inter', system-ui, sans-serif;
}

.pagination-button {
    color: var(--text-primary);
    background: none;
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    font-size: 1rem;
    cursor: pointer;
    font-family: inherit;
}

.pagination-button:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.pagination-button.active {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Academic Features */
.citation {
    background: var(--citation-bg);
    border-left: 3px solid var(--accent-color);
    padding: 1rem;
    margin: 1.5rem 0;
    font-size: 0.95rem;
    border-radius: 0.25rem;
}

.bibliography {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.bibliography h2 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.reference-entry {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
    text-indent: -2rem;
    line-height: 1.4;
}

.reference-authors {
    color: var(--text-primary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.reference-title {
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.reference-details {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.reference-details em {
    font-style: italic;
}

.research-links {
    display: flex;
    gap: 1rem;
    margin: 1.5rem 0;
}

.research-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--link-color);
    text-decoration: none;
    font-size: 0.95rem;
}

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

.research-link i {
    font-size: 1.1rem;
}

/* Comments Section */
.comments-section {
    margin-top: 4rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

/* Post Content */
.post-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 6rem 2rem 4rem;
    background: var(--bg-primary);
    min-height: 100vh;
}

article {
    font-family: 'Inter', system-ui, sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    letter-spacing: -0.01em;
}

article h1 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

article h2 {
    font-size: 1.25rem;
    margin: 2rem 0 1rem;
}

article h3 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem;
}

article p {
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.5;
}

article ul, article ol {
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

article li {
    margin-bottom: 0.5rem;
}

/* Math and Code */
.math-block {
    margin: 1.5rem 0;
    font-size: 0.95rem;
    padding: 0.75rem 0;
}

code {
    font-size: 0.85rem;
    padding: 0.15rem 0.3rem;
}

/* Homepage */
.home-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-xl);
}

/* Intro section */
.intro-section {
    margin-bottom: 4rem;
}

.intro-section h1 {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.intro-text {
    font-size: 1.4rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.intro-content {
    max-width: 800px;
}

/* Interest blocks */
.interest-block {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.interest-block:hover {
    transform: translateX(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.interest-block h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.interest-block h3 i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.interest-block p {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin: 0;
}

.interest-block .text-link {
    color: var(--accent-color);
    font-weight: 500;
    text-decoration: none;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.interest-block .text-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -2px;
    left: 0;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.interest-block .text-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Dark mode adjustments */
[data-theme="dark"] .interest-block {
    background: rgba(255, 255, 255, 0.05);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .intro-section h1 {
        font-size: 2.5rem;
        margin-bottom: 1.5rem;
    }

    .intro-text {
        font-size: 1.2rem;
        margin-bottom: 2rem;
    }

    .interest-block {
        padding: 1.25rem;
        margin-bottom: 1.5rem;
    }

    .interest-block h3 {
        font-size: 1.2rem;
    }

    .interest-block p {
        font-size: 1rem;
    }
}

/* Main links */
.main-links {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.text-link {
    font-size: 1.2rem;
    color: var(--accent-color);
    text-decoration: none;
    position: relative;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.text-link::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--accent-color);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.text-link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.link-arrow {
    transition: transform 0.3s ease;
}

.text-link:hover .link-arrow {
    transform: translateX(5px);
}

/* Recent section */
.recent-section {
    margin-top: var(--space-4xl);
    position: relative;
}

.recent-section h2 {
    font-size: 2rem;
    margin-bottom: var(--space-2xl);
    color: var(--text-primary);
    position: relative;
    display: inline-block;
}

.recent-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
}

.recent-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
}

.recent-card {
    text-decoration: none;
    color: var(--text-primary);
    background: var(--bg-primary);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    position: relative;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.recent-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    z-index: -1;
}

.recent-card:hover {
    transform: translateY(-10px);
}

.recent-card:hover::after {
    opacity: 1;
}

.card-gif-container {
    position: relative;
    overflow: hidden;
    padding-top: 66.67%; /* 3:2 aspect ratio */
}

.card-gif {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.recent-card:hover .card-gif {
    transform: scale(1.1);
}

.card-content {
    padding: 1.5rem;
    background: var(--bg-primary);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.recent-card h3 {
    font-size: 1.1rem;
    line-height: 1.4;
    margin: 0;
    font-weight: 500;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.card-meta {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-meta i {
    font-size: 0.9rem;
}

.read-more-arrow {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    font-size: 1.2rem;
    opacity: 0;
    transform: translateX(-10px);
    transition: all 0.3s ease;
    color: var(--accent-color);
}

.recent-card:hover .read-more-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Dark mode adjustments */
[data-theme="dark"] .recent-card {
    background: rgba(255, 255, 255, 0.03);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .card-content {
    background: rgba(255, 255, 255, 0.03);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .recent-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .recent-section {
        margin-top: 4rem;
    }

    .recent-section h2 {
        font-size: 1.75rem;
        margin-bottom: 2rem;
    }

    .recent-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .card-gif-container {
        padding-top: 56.25%; /* 16:9 aspect ratio for mobile */
    }

    .card-content {
        padding: 1.25rem;
    }
}

/* Images with Alt Text */
.post-image {
    max-width: 100%;
    height: auto;
    margin: 2rem 0;
    border-radius: 0.5rem;
}

.image-caption {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .blog-container {
        flex-direction: column;
        padding: 1rem;
    }

    .sidebar {
        width: 100%;
        position: static;
        padding-right: 0;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 2rem;
        margin-bottom: 2rem;
    }

    .blog-list-container {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 14px;
        padding: 0 15px;
    }

    .post-container, .blog-container {
        padding: 1rem;
    }

    .research-links {
        flex-direction: column;
    }

    article h1 {
        font-size: 1.8rem;
    }

    article h2 {
        font-size: 1.4rem;
    }

    .pagination {
        flex-wrap: wrap;
    }

    .nav-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-left, .nav-right {
        width: 100%;
        justify-content: space-between;
    }

    .blog-container {
        flex-direction: column;
        padding: 0 1rem;
    }

    .sidebar {
        width: 100%;
        margin-bottom: 2rem;
    }
}

/* Animations for Markdown content */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes popIn {
    0% { transform: scale(0.8); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.animate-fade-in {
    animation: fadeIn 1s ease-in;
}

.animate-slide-in {
    animation: slideIn 0.5s ease-out;
}

.animate-pop-in {
    animation: popIn 0.5s cubic-bezier(0.26, 0.53, 0.74, 1.48);
}

.animate-hover {
    transition: transform 0.3s ease;
}

.animate-hover:hover {
    transform: scale(1.05);
}

/* Special containers */
.info-box {
    padding: 1rem;
    margin: 1rem 0;
    border-left: 4px solid var(--accent-color);
    background: var(--sidebar-bg);
    border-radius: 0.5rem;
    transition: transform 0.3s ease;
}

.info-box:hover {
    transform: translateX(10px);
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.markdown-card {
    padding: 1rem;
    background: var(--sidebar-bg);
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.markdown-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
}

/* Homepage Styles */
.hero-section {
    text-align: center;
    padding: 2rem 0 4rem;
    position: relative;
}

.profile-image {
    width: 100%;
    max-width: 800px;
    margin: 0 auto 2rem;
    position: relative;
    overflow: hidden;
    border-radius: 1rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.hero-image {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.profile-image:hover .hero-image {
    transform: scale(1.05);
}

.home-title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(120deg, var(--accent-color), var(--link-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation-delay: 0.3s;
}

.home-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--text-secondary);
    animation-delay: 0.5s;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
    animation-delay: 0.7s;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 2rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-button.primary {
    background: var(--text-primary);
    color: var(--bg-primary);
}

.cta-button.secondary {
    background: var(--citation-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.cta-button.primary:hover {
    background: var(--text-secondary);
}

.featured-section {
    padding: 4rem 0;
    margin-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.section-title {
    text-align: center;
    font-family: 'EB Garamond', Georgia, serif;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.read-more {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.3s ease;
}

.read-more:hover {
    transform: translateX(5px);
}

/* Animation Delays */
.animate-slide-in {
    animation-fill-mode: both;
}

.animate-pop-in {
    animation-fill-mode: both;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .home-title {
        font-size: 2.5rem;
    }

    .home-subtitle {
        font-size: 1.2rem;
    }

    .cta-buttons {
        flex-direction: column;
        padding: 0 1rem;
    }

    .profile-image {
        margin: 1rem;
    }
}

/* Split Layout Homepage */
.split-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    max-width: 1200px;
    padding: 6rem 2rem;
    margin: 0 auto;
    min-height: calc(100vh - 4rem);
    align-items: start;
}

.profile-section {
    position: sticky;
    top: 6rem;
}

.profile-image {
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.profile-pic {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.social-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem 1rem;
    border-radius: 0.5rem;
    background: var(--bg-primary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.social-link:hover {
    background: var(--text-primary);
    color: var(--bg-primary);
    border-color: var(--text-primary);
}

.social-link i {
    font-size: 1.2rem;
    width: 1.5rem;
    text-align: center;
}

.bio-section {
    padding: 2rem 0;
}

.bio-section .home-title {
    font-size: 3rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
    text-align: left;
}

.bio-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.bio-text {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin: 0;
}

.interest-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.interest-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.interest-list li::before {
    content: "→";
    color: var(--accent-color);
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .split-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .profile-section {
        position: static;
        max-width: 400px;
        margin: 0 auto;
    }

    .social-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .social-link {
        min-width: 200px;
    }

    .bio-section {
        text-align: center;
    }

    .bio-section .home-title {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .split-layout {
        padding: 4rem 1rem;
    }

    .social-link {
        min-width: 100%;
    }

    .interest-list {
        grid-template-columns: 1fr;
    }
}

/* Links */
a {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

a:hover {
    opacity: 0.7;
}

/* Homepage Styles */
.about-section {
    margin-bottom: 4rem;
}

.about-section h1 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-section p {
    font-size: 1rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

.about-section a {
    color: var(--text-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.about-section a:hover {
    opacity: 0.7;
}

/* Dark mode adjustments for about section */
[data-theme="dark"] .about-section {
    background: rgba(0, 0, 0, 0.2);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .home-container {
        padding: 1rem;
    }

    .about-section {
        padding: 1.5rem;
        margin-top: 1.5rem;
    }

    .about-section h1 {
        font-size: 2rem;
    }
}

/* Research Page Styles */
.research-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.research-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.research-section h1 {
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 1rem;
}

.research-area {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.research-area:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.research-area h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Add icons to section headers */
.research-area h2::before {
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    font-size: 1rem;
}

.research-area:nth-child(1) h2::before {
    content: "\f5da";  /* Microscope icon for Research Focus */
}

.research-area:nth-child(2) h2::before {
    content: "\f500";  /* User icon for Researchers */
}

.research-area:nth-child(3) h2::before {
    content: "\f02d";  /* Book icon for Readings */
}

.research-area:nth-child(4) h2::before {
    content: "\f0ae";  /* Tasks icon for Projects */
}

.research-area p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

/* Researchers Grid */
.researchers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.researcher-card {
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    transition: transform 0.2s ease;
}

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

.researcher-card h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.researcher-card p {
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.researcher-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    color: var(--link-color);
    text-decoration: none;
    margin-top: 0.5rem;
}

/* Paper List */
.paper-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.paper-card {
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1rem;
    transition: transform 0.2s ease;
}

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

.paper-card h3 {
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    line-height: 1.4;
}

.paper-card p {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

.paper-card a {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.85rem;
    color: var(--link-color);
    text-decoration: none;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .research-container {
        padding: 1rem;
    }
    
    .research-section {
        gap: 1.5rem;
    }
    
    .research-area {
        padding: 1rem;
    }
    
    .researchers-grid,
    .paper-list {
        grid-template-columns: 1fr;
    }
    
    .research-area h2 {
        font-size: 1.1rem;
    }
}

/* Add smooth transitions */
.research-area,
.researcher-card,
.paper-card {
    transition: all 0.2s ease-in-out;
}

/* Add focus styles for accessibility */
.researcher-link:focus,
.paper-card a:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Enhanced Research Page Styles */
.research-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.highlight-item {
    background: var(--bg-elevated);
    padding: var(--space-lg);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.highlight-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.highlight-item h4 {
    color: var(--accent-color);
    margin-bottom: var(--space-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
}

.highlight-item p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
}

/* Project Grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-lg);
}

.project-card {
    background: var(--bg-elevated);
    padding: var(--space-xl);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-color);
}

.project-card h3 {
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    font-size: 1.25rem;
}

.project-card p {
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.tech-tag {
    background: var(--accent-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

.project-links {
    display: flex;
    gap: var(--space-md);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.project-link:hover {
    color: var(--accent-dark);
}

/* Academic Info */
.academic-info {
    margin-top: var(--space-lg);
}

.degree-item {
    background: var(--bg-elevated);
    padding: var(--space-lg);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.degree-item h4 {
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.institution {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--space-xs);
}

.duration {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--space-md);
    font-style: italic;
}

.description {
    margin: 0;
    line-height: 1.6;
}

/* Interests Grid */
.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.interest-item {
    text-align: center;
    padding: var(--space-lg);
    background: var(--bg-elevated);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease;
}

.interest-item:hover {
    transform: translateY(-2px);
}

.interest-item i {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: var(--space-md);
}

.interest-item h4 {
    margin-bottom: var(--space-sm);
    font-size: 1rem;
}

.interest-item p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-muted);
}

/* Skills Section */
.skills-section {
    margin-top: var(--space-lg);
}

.skill-category {
    margin-bottom: var(--space-xl);
}

.skill-category h4 {
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-size: 1.1rem;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.skill-tag {
    background: var(--bg-elevated);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.skill-tag:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

/* Dark theme adjustments for research page */
[data-theme="dark"] .highlight-item,
[data-theme="dark"] .project-card,
[data-theme="dark"] .degree-item,
[data-theme="dark"] .interest-item {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

[data-theme="dark"] .project-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .skill-tag {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}