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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fafafa;
    height: 100vh;
    overflow: hidden;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    border-bottom: 1px solid #e5e5e5;
}

.header h1 {
    font-size: 1.8rem;
    font-weight: 300;
    color: #222;
}

.header p {
    color: #666;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    justify-content: center;
    padding: 0 2rem;
    margin-top: 1.5rem;
    gap: 0.5rem;
}

.tab-button {
    background: none;
    border: none;
    padding: 0.75rem 1.5rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-family: inherit;
}

.tab-button:hover {
    background: #f0f0f0;
    color: #333;
}

.tab-button.active {
    background: #333;
    color: white;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.loading {
    text-align: center;
    color: #666;
    padding: 2rem;
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

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

/* About Section */
.about-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    line-height: 1.8;
}

.about-content p {
    margin-bottom: 1.5rem;
    color: #555;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    margin-top: 2rem;
}

.skill-tag {
    background: #f0f0f0;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    color: #555;
}

/* Blog Section */
.blog-list {
    max-width: 700px;
    margin: 0 auto;
}

.blog-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid #eee;
}

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

.blog-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.5rem;
}

.blog-meta {
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 0.75rem;
}

.blog-description {
    color: #666;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.blog-read-more {
    color: #007acc;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.blog-read-more:hover {
    color: #005a99;
}

/* Individual Blog Post Styles */
.blog-post {
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.8;
}

.blog-post-nav {
    margin-bottom: 2rem;
}

.back-to-blog {
    color: #007acc;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s ease;
}

.back-to-blog:hover {
    color: #005a99;
}

.blog-post h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #222;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.blog-post .post-meta {
    color: #999;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.blog-post p {
    margin-bottom: 1.5rem;
    color: #444;
    font-size: 1rem;
}

.blog-post h2 {
    font-size: 1.4rem;
    font-weight: 600;
    color: #333;
    margin: 2rem 0 1rem 0;
}

.blog-post h3 {
    font-size: 1.2rem;
    font-weight: 500;
    color: #333;
    margin: 1.5rem 0 0.75rem 0;
}

.blog-post img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 2rem 0;
    display: block;
    margin-left: auto;
    margin-right: auto;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.blog-post .image-caption {
    text-align: center;
    font-size: 0.85rem;
    color: #666;
    margin-top: -1rem;
    margin-bottom: 2rem;
    font-style: italic;
}

.blog-post code {
    background: #f5f5f5;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    color: #d63384;
}

.blog-post pre {
    background: #f8f8f8;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.5rem 0;
    border-left: 4px solid #007acc;
}

.blog-post blockquote {
    border-left: 4px solid #e5e5e5;
    padding-left: 1rem;
    margin: 1.5rem 0;
    color: #666;
    font-style: italic;
}

.blog-post ul, .blog-post ol {
    margin: 1rem 0 1.5rem 1.5rem;
}

.blog-post li {
    margin-bottom: 0.5rem;
    color: #444;
}

/* Papers Section */
.papers-list {
    max-width: 700px;
    margin: 0 auto;
}

.paper-item {
    padding: 1.5rem 0;
    border-bottom: 1px solid #eee;
}

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

.paper-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.5rem;
}

.paper-authors {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.paper-venue {
    font-size: 0.85rem;
    color: #999;
    margin-bottom: 0.75rem;
    font-style: italic;
}

.paper-links {
    display: flex;
    gap: 1rem;
}

.paper-link {
    font-size: 0.85rem;
    color: #007acc;
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border: 1px solid #007acc;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.paper-link:hover {
    background: #007acc;
    color: white;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    max-width: 700px;
    margin: 0 auto;
}

.project-card {
    background: white;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 1.5rem;
    transition: all 0.2s ease;
}

.project-card:hover {
    border-color: #ccc;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.project-title {
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
    margin-bottom: 0.75rem;
}

.project-description {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

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

.tech-tag {
    background: #f8f8f8;
    color: #666;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* Contact Section */
.contact-content {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
}

.contact-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    color: #666;
    transition: color 0.2s ease;
}

.contact-link:hover {
    color: #333;
}

.contact-icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.contact-label {
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        height: 100vh;
    }

    .header {
        padding: 1.5rem 1rem 1rem;
    }

    .nav-tabs {
        padding: 0 1rem;
        flex-wrap: wrap;
    }

    .tab-button {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

    .content-area {
        padding: 1.5rem 1rem;
    }

    .contact-links {
        gap: 1.5rem;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }
}