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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #e0e0e0;
    background: #1a1a1a;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 3rem;
}

nav {
    padding: 1.5rem 0;
    height: fit-content;
    position: sticky;
    top: 2rem;
}

.site-title {
    font-size: 1.5rem;
    margin: 0 0 1.5rem 0;
    color: #ffffff;
    font-weight: 600;
}

nav ul {
    list-style: none;
    display: block;
}

nav > ul > li {
    margin-bottom: 1rem;
}

nav a {
    text-decoration: none;
    color: #e0e0e0;
    padding: 0.25rem 0;
    display: block;
    transition: color 0.2s;
    font-weight: 500;
}

nav a:hover {
    color: #ffffff;
    cursor: pointer;
}

nav a.active {
    color: #ffffff;
    font-weight: 600;
    border-left: 3px solid #ffffff;
    padding-left: 0.5rem;
    margin-left: -0.5rem;
}

.nav-children {
    margin-top: 0.5rem;
    margin-left: 1rem;
    list-style: none;
}

.nav-children li {
    margin-bottom: 0.5rem;
}

.nav-children a {
    font-weight: 400;
    font-size: 0.9em;
    color: #aaa;
}

.nav-children a:hover {
    color: #fff;
}

.nav-children a.active {
    color: #ffffff;
    font-weight: 500;
}

.about-box {
    margin-top: 2rem;
    padding: 1rem;
    background: #2a2a2a;
    border-radius: 8px;
    border: 1px solid #333;
}

.about-box h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1rem;
    color: #ffffff;
}

.about-box p {
    margin: 0.5rem 0;
    font-size: 0.85rem;
    color: #aaa;
    line-height: 1.4;
}

.about-box a {
    color: #66b3ff;
    text-decoration: none;
}

.about-box a:hover {
    text-decoration: underline;
}

main {
    padding: 0;
}

#loading {
    display: none;
    color: #999;
    font-style: italic;
}

/* Markdown content styling */
#content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #ffffff;
}

#content h2 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #f0f0f0;
}

#content h3 {
    font-size: 1.5rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: #e0e0e0;
}

#content p {
    margin-bottom: 1rem;
}

#content ul, #content ol {
    margin-bottom: 1rem;
    margin-left: 2rem;
}

#content li {
    margin-bottom: 0.5rem;
}

#content a {
    color: #66b3ff;
    text-decoration: none;
}

#content a:hover {
    text-decoration: underline;
}

#content code {
    background: #2a2a2a;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 0.9em;
    color: #ffb366;
}

#content pre {
    background: #2a2a2a;
    padding: 1rem;
    border-radius: 4px;
    overflow-x: auto;
    margin-bottom: 1rem;
    border: 1px solid #333;
}

#content pre code {
    background: none;
    padding: 0;
    color: #e0e0e0;
}

#content blockquote {
    border-left: 4px solid #444;
    padding-left: 1rem;
    margin: 1rem 0;
    color: #999;
}

#content img {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
    margin: 1rem 0;
}

#content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

#content table th,
#content table td {
    padding: 0.75rem;
    border: 1px solid #333;
    text-align: left;
}

#content table th {
    background: #2a2a2a;
    font-weight: 600;
}

#content strong {
    color: #ffffff;
}

#content em {
    color: #f0f0f0;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    nav {
        position: static;
        border-bottom: 1px solid #333;
        padding-bottom: 1.5rem;
        margin-bottom: 0;
    }
    
    nav ul {
        display: flex;
        gap: 1.5rem;
        flex-wrap: wrap;
    }
    
    nav > ul > li {
        margin-bottom: 0;
    }
    
    .nav-children {
        display: none;
    }
    
    .about-box {
        margin-top: 1rem;
    }
}