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

:root {
    /* Color palette matching personal branding site */
    --primary-blue: #2563eb;
    --blue-light: #3b82f6;
    --blue-dark: #1d4ed8;
    --purple-accent: #a78bfa;
    --purple-light: #e9d5ff;
    --dark-bg: #1e293b;
    --darker-bg: #0f172a;
    --light-bg: #eff6ff;
    --warm-bg: #dbeafe;
    --text-dark: #1e293b;
    --text-light: #475569;
    --border-color: #bfdbfe;
    --border-neutral: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(to bottom right, #fafaf9, var(--warm-bg));
    min-height: 100vh;
}

/* Navigation */
nav {
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 60px;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-dark);
}

.nav-links a.active {
    color: var(--primary-blue);
    border-bottom: 2px solid var(--primary-blue);
}

/* Accessibility - Focus Indicators */
*:focus-visible {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid #2563eb;
    outline-offset: 2px;
}

/* Skip to main content link for keyboard users */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #2563eb;
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Featured Post */
.featured-post {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 3rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-neutral);
}

.featured-badge {
    background: var(--dark-bg);
    color: var(--blue-light);
    padding: 0.5rem 1rem;
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.featured-content {
    padding: 2rem;
}

.featured-post h2 {
    font-size: 2rem;
    color: var(--text-dark);
    margin: 1rem 0;
    line-height: 1.3;
}

.featured-post .meta {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.featured-post .excerpt {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.read-more {
    display: inline-block;
    background: var(--dark-bg);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}

.read-more:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    background: var(--text-dark);
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-neutral);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.blog-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    border-color: var(--border-neutral);
}

.blog-card-content {
    padding: 1.5rem;
}

.category-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.category-research {
    background: rgba(37, 99, 235, 0.05);
    color: var(--text-light);
}

.category-tech {
    background: rgba(37, 99, 235, 0.08);
    color: var(--text-light);
}

.category-entrepreneurship {
    background: rgba(167, 139, 250, 0.08);
    color: var(--text-light);
}

.blog-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    line-height: 1.4;
}

.blog-card .meta {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.blog-card .excerpt {
    color: var(--text-light);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.blog-card a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.blog-card a:hover {
    color: var(--primary-blue);
}

/* Post Content */
.post-content {
    background: white;
    border-radius: 12px;
    padding: 3rem;
    margin-bottom: 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-neutral);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.post-content h1 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.post-content h2 {
    font-size: 1.875rem;
    color: var(--text-dark);
    margin: 2rem 0 1rem;
}

.post-content h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin: 1.5rem 0 0.75rem;
}

.post-content p {
    margin-bottom: 1.25rem;
    line-height: 1.8;
}

.post-content ul, .post-content ol {
    margin-bottom: 1.25rem;
    padding-left: 2rem;
}

.post-content li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
}

.post-content code {
    background: var(--warm-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-family: 'Monaco', 'Courier New', monospace;
}

.post-content pre {
    background: var(--dark-bg);
    color: white;
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 1.25rem;
}

.post-content pre code {
    background: transparent;
    padding: 0;
    color: white;
}

.post-content blockquote {
    border-left: 4px solid var(--primary-blue);
    padding-left: 1.5rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--text-light);
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
}

/* Sidebar */
.content-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    margin-top: 2rem;
}

.sidebar {
    position: sticky;
    top: 80px;
    height: fit-content;
}

.sidebar-section {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-neutral);
}

.sidebar-section h3 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.category-list {
    list-style: none;
}

.category-list li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-neutral);
}

.category-list li:last-child {
    border-bottom: none;
}

.category-list a {
    color: var(--text-dark);
    text-decoration: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.3s ease;
}

.category-list a:hover {
    color: var(--text-dark);
}

.category-count {
    background: var(--warm-bg);
    color: var(--text-light);
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
}

/* Social Share Buttons */
.social-share {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-neutral);
    margin-top: 2rem;
}

.social-share-label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.875rem;
}

.social-share-buttons {
    display: flex;
    gap: 0.5rem;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    text-decoration: none;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.8;
}

.share-btn:hover {
    transform: translateY(-2px);
    opacity: 1;
}

.share-btn svg {
    width: 20px;
    height: 20px;
}

.share-btn-twitter {
    background: #1DA1F2;
    color: white;
}

.share-btn-facebook {
    background: #1877F2;
    color: white;
}

.share-btn-linkedin {
    background: #0A66C2;
    color: white;
}

.share-btn-reddit {
    background: #FF4500;
    color: white;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
    padding: 2rem 0;
}

.pagination a,
.pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 0.75rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.pagination a {
    background: white;
    color: var(--text-dark);
    border: 1px solid var(--border-neutral);
}

.pagination a:hover {
    background: var(--warm-bg);
    border-color: var(--border-color);
}

.pagination .active {
    background: var(--dark-bg);
    color: white;
    border: 1px solid var(--dark-bg);
}

.pagination .dots {
    color: var(--text-light);
    border: none;
    background: transparent;
}

/* Footer */
footer {
    background: var(--darker-bg);
    color: white;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

footer p {
    opacity: 0.8;
    font-size: 0.9375rem;
}

/* Responsive Design */
@media (max-width: 968px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: static;
    }

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

@media (max-width: 640px) {
    .nav-links {
        gap: 1rem;
        font-size: 0.875rem;
    }

    .featured-post h2 {
        font-size: 1.5rem;
    }
    
    .post-content {
        padding: 2rem 1.5rem;
    }
    
    .post-content h1 {
        font-size: 2rem;
    }
}