/* 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: #374151;
    background: #ffffff;
    min-height: 100vh;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header Section */
.header {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.profile-section {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    flex-wrap: wrap;
}

.profile-image {
    flex-shrink: 0;
}

.profile-image img {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid #e5e7eb;
    transition: transform 0.2s ease;
}

.profile-image img:hover {
    transform: scale(1.02);
}

.profile-info {
    flex: 1;
    min-width: 300px;
}

.name {
    font-size: 2rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.5rem;
}

.title {
    font-size: 1.25rem;
    font-weight: 500;
    color: #6b7280;
    margin-bottom: 1rem;
}

.bio {
    font-size: 1rem;
    color: #6b7280;
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

/* Social Media Links */
.social-links {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.social-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s ease;
    font-size: 0.9rem;
    border: 1px solid #e5e7eb;
    background: #ffffff;
    color: #374151;
    min-width: 100px;
    justify-content: center;
}

.social-link.linkedin {
    color: #0077b5;
    border-color: #0077b5;
}

.social-link.medium {
    color: #00ab6c;
    border-color: #00ab6c;
}

.social-link.github {
    color: #333;
    border-color: #333;
}

.social-link.twitter {
    color: #1da1f2;
    border-color: #1da1f2;
}

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

.social-link i {
    font-size: 1rem;
}

/* Articles Section */
.articles-section {
    background: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.articles-section h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 1.5rem;
}

.articles-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.article-card {
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 1.25rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: #d1d5db;
}

.article-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.article-tags {
    color: #6b7280;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.4;
}

.tag {
    background: #f3f4f6;
    color: #374151;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e5e7eb;
    transition: all 0.2s ease;
}

.tag:hover {
    background: #e5e7eb;
    border-color: #d1d5db;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: #9ca3af;
}

.article-date {
    font-weight: 500;
}

.article-source {
    background: #f3f4f6;
    color: #374151;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #e5e7eb;
}

.article-source.linkedin {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.article-source.medium {
    background: #00ab6c;
    color: white;
    border-color: #00ab6c;
}

/* Expand Button */
.expand-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: #ffffff;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    color: #374151;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    margin-top: 1rem;
    cursor: pointer;
}

.expand-button:hover {
    background: #f9fafb;
    border-color: #9ca3af;
    transform: translateY(-1px);
}

.expand-button i {
    transition: transform 0.2s ease;
}

.expand-button.expanded i {
    transform: rotate(180deg);
}

/* Hidden Articles */
.article-card.hidden {
    display: none;
}

/* No Articles State */
.no-articles {
    text-align: center;
    padding: 2rem;
    color: #6b7280;
    background: #f9fafb;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
}

.no-articles p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

/* Loading Animation */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: #6b7280;
    font-size: 0.95rem;
}

.loading::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid #e5e7eb;
    border-top: 2px solid #3b82f6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 0.75rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Footer */
.footer {
    text-align: center;
    padding: 2rem;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    .header {
        padding: 2rem;
    }
    
    .profile-section {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-image img {
        width: 150px;
        height: 150px;
    }
    
    .name {
        font-size: 1.75rem;
    }
    
    .title {
        font-size: 1.1rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .articles-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem;
    }
    
    .name {
        font-size: 1.5rem;
    }
    
    .title {
        font-size: 1rem;
    }
    
    .bio {
        font-size: 0.95rem;
    }
}

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