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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f500;
}

.container {
    display: flex;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    background-color: white;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

/* Sidebar Styles */
.sidebar {
    width: 300px;
    background-color: grey;
    color: white;
    padding: 2rem;
    overflow-y: auto;
}

.sidebar-header h1 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: white;
}

.tagline {
    font-size: 1.0rem;
    color: white;
    margin-bottom: 2rem;
    font-weight: bold;
}

.article-index h2 {
    font-size: 1.0rem;
    margin-bottom: 1rem;
    color: #ecf0f1;
    border-bottom: 2px solid #34495e;
    padding-bottom: 0.5rem;
}

.article-index ul {
    list-style: none;
}

.article-index li {
    margin-bottom: 0.7rem;
}

.article-index a {
    color: black;
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    padding: 0.3rem 0;
}

.article-index a:hover {
    color: darkblue;
}

.article-index a.active {
    color: black;
    font-weight: bolder;
}

/* Main Content Styles */
.main-content {
    flex: 1;
    padding: 3rem;
    overflow-y: auto;
}

article h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.article-meta {
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #ecf0f1;
}

article h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #34495e;
}

article h3 {
    font-size: 1.4rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    color: #34495e;
}

article p {
    margin-bottom: 1.2rem;
    text-align: justify;
}

article ul, article ol {
    margin-bottom: 1.2rem;
    margin-left: 2rem;
}

article li {
    margin-bottom: 0.5rem;
}

article code {
    background-color: #f8f8f8;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
}

article pre {
    background-color: #f8f8f8;
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1.2rem;
}

article pre code {
    padding: 0;
    background: none;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
    font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        padding: 1.5rem;
    }
    
    .main-content {
        padding: 1.5rem;
    }
    
    article h1 {
        font-size: 2rem;
    }
}