/* Markdown Content Styling */
:root {
    --markdown-text: #ffffff;
    --markdown-bg: #141b2d;
    --markdown-code-bg: #1e1e1e;
    --markdown-border: rgba(0, 255, 221, 0.1);
    --markdown-accent: #00FFDD;
}

/* Main content area */
#main-content {
    max-width: none;
    padding: 2rem;
    line-height: 1.7;
    color: var(--markdown-text);
}

/* Typography */
#main-content h1 {
    font-size: 2.5rem;
    margin: 2rem 0 1.5rem 0;
    background: linear-gradient(135deg, #00c2ff 0%, #00ff7f 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

#main-content h2 {
    font-size: 2rem;
    margin: 2rem 0 1rem 0;
    color: var(--markdown-accent);
    border-bottom: 2px solid var(--markdown-border);
    padding-bottom: 0.5rem;
}

#main-content h3 {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem 0;
    color: #87ceeb;
}

#main-content h4, #main-content h5, #main-content h6 {
    margin: 1rem 0 0.5rem 0;
    color: #b0c4de;
}

/* Paragraphs and text */
#main-content p {
    margin: 1rem 0;
    font-size: 1.1rem;
}

#main-content strong {
    color: var(--markdown-accent);
    font-weight: 600;
}

#main-content em {
    color: #87ceeb;
    font-style: italic;
}

/* Lists */
#main-content ul, #main-content ol {
    margin: 1rem 0;
    padding-left: 2rem;
}

#main-content li {
    margin: 0.5rem 0;
    font-size: 1.05rem;
}

#main-content li::marker {
    color: var(--markdown-accent);
}

/* Code blocks */
#main-content pre {
    background: var(--markdown-code-bg);
    border: 1px solid var(--markdown-border);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow-x: auto;
    position: relative;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

#main-content code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.95rem;
}

#main-content p code {
    background: rgba(0, 255, 221, 0.1);
    color: var(--markdown-accent);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

/* Copy button for code blocks */
.copy-code-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: var(--markdown-accent);
    color: #0a0f1a;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.2s ease;
}

.copy-code-btn:hover {
    background: #00e5c8;
    transform: translateY(-1px);
}

/* Blockquotes */
#main-content blockquote {
    border-left: 4px solid var(--markdown-accent);
    background: rgba(0, 255, 221, 0.05);
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    border-radius: 0 8px 8px 0;
}

#main-content blockquote p {
    margin: 0;
    font-style: italic;
    color: #b0c4de;
}

/* Tables */
#main-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--markdown-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

#main-content th, #main-content td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--markdown-border);
}

#main-content th {
    background: rgba(0, 255, 221, 0.1);
    color: var(--markdown-accent);
    font-weight: 600;
}

#main-content tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Links */
#main-content a {
    color: var(--markdown-accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

#main-content a:hover {
    border-bottom-color: var(--markdown-accent);
    color: #00e5c8;
}

/* Images */
#main-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

/* Horizontal rules */
#main-content hr {
    border: none;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--markdown-accent), transparent);
    margin: 2rem 0;
}

/* Navigation Subsections */
.nav-subsections {
    list-style: none;
    padding: 0;
    margin: 0.5rem 0 0.5rem 0;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 6px;
    padding: 0.5rem 0;
}

.nav-subsections li {
    margin: 0;
}

.nav-subsections a {
    color: #87ceeb;
    text-decoration: none;
    padding: 0.5rem 1.2rem;
    display: block;
    font-size: 0.85rem;
    transition: all 0.2s ease;
    border-left: 2px solid transparent;
    position: relative;
}

.nav-subsections a::before {
    content: "→";
    position: absolute;
    left: 0.5rem;
    opacity: 0;
    transition: all 0.2s ease;
}

.nav-subsections a:hover {
    color: var(--markdown-accent);
    background: rgba(0, 255, 221, 0.05);
    border-left-color: var(--markdown-accent);
}

.nav-subsections a:hover::before {
    opacity: 1;
    left: 0.7rem;
}

.nav-category-title {
    cursor: default;
    user-select: none;
}

/* Content Navigation */
.content-navigation {
    background: transparent;
    padding: 0;
}

.nav-section {
    margin-bottom: 2.5rem;
}

.nav-section h3 {
    color: var(--markdown-accent);
    margin: 0 0 1rem 0;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
    padding: 0.5rem 0.8rem;
    background: rgba(0, 255, 221, 0.05);
    border-radius: 6px;
    border-left: 3px solid var(--markdown-accent);
}

.nav-section ul {
    list-style: none;
    padding: 0;
    margin: 0.8rem 0 0 0;
}

.nav-section > ul > li {
    margin: 0.2rem 0;
}

.nav-section > ul > li > a {
    color: #e1e6f2;
    text-decoration: none;
    padding: 0.7rem 0.8rem;
    display: block;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-size: 0.95rem;
    font-weight: 500;
    border-left: 3px solid transparent;
}

.nav-section > ul > li > a:hover {
    background: rgba(0, 255, 221, 0.08);
    color: #ffffff;
    border-left-color: rgba(0, 255, 221, 0.3);
    padding-left: 1rem;
}

.nav-section > ul > li > a.active {
    background: rgba(0, 255, 221, 0.15);
    color: var(--markdown-accent);
    font-weight: 600;
    border-left-color: var(--markdown-accent);
    box-shadow: 0 2px 8px rgba(0, 255, 221, 0.1);
}

/* Responsive design */
@media (max-width: 768px) {
    #main-content {
        padding: 1rem;
    }
    
    #main-content h1 {
        font-size: 2rem;
    }
    
    #main-content h2 {
        font-size: 1.5rem;
    }
    
    #table-of-contents {
        position: static;
    }
}