:root {
    --bg-color: #1a1a1a;
    --sidebar-bg: #141414;
    --text-color: #e0e0e0;
    --muted-text: #808080;
    --border-color: #333;
    --code-bg: #0d0d0d;
    --accent-color: #4a9eff;
    --sidebar-width: 280px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    position: fixed;
    top: 0;
    left: 0;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
}

.sidebar-content {
    padding: 2rem 1.5rem;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.nav-main {
    list-style: none;
}

/* Brand */
.nav-brand {
    margin-bottom: 2rem;
    padding-left: 1.2rem;
    position: relative;
}

.nav-brand::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

.nav-brand a {
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-color);
    text-decoration: none;
}

/* Nav Sections */
.nav-section {
    margin-bottom: 0.3rem;
}

.nav-section-title {
    display: block;
    padding: 0.5rem 0 0.5rem 1.2rem;
    position: relative;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
    text-decoration: none;
}

.nav-section-title::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--muted-text);
}

.nav-section-title:hover {
    color: var(--accent-color);
}

/* Subsections */
.nav-subsections {
    list-style: none;
    margin: 0 0 0.5rem 1.2rem;
    padding-left: 1rem;
    border-left: 1px solid var(--border-color);
}

.nav-subsections a {
    display: block;
    padding: 0.3rem 0;
    font-size: 0.85rem;
    color: var(--muted-text);
    text-decoration: none;
}

.nav-subsections a:hover,
.nav-subsections a.active {
    color: var(--accent-color);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 0 0 3rem 0;
}

.content-wrapper {
    padding: 0 3rem;
}

/* Top Nav */
.top-nav {
    padding: 0 2rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.logo-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Typography */

.logo-version {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-logo {
    max-width: 120px;
    height: auto;
}

.version-dropdown {
    position: relative;
}

.version-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.75rem;
    color: var(--muted-text);
    padding: 0.2rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: transparent;
    cursor: pointer;
    font-family: inherit;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.version-btn:hover {
    color: var(--text-color);
    border-color: var(--muted-text);
}

.dropdown-arrow {
    transition: transform 0.2s ease;
}

.version-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.version-menu {
    position: absolute;
    top: calc(100% + 0.3rem);
    left: 0;
    min-width: 140px;
    background: var(--sidebar-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    list-style: none;
    margin: 0;
    padding: 0.3rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    z-index: 100;
}

.version-dropdown.open .version-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.version-menu li {
    margin: 0;
}

.version-menu a {
    display: block;
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
    color: var(--muted-text);
    text-decoration: none;
    transition: background 0.15s ease, color 0.15s ease;
}

.version-menu a:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.version-menu a.active {
    color: var(--accent-color);
}

.github-link {
    color: var(--muted-text);
    transition: color 0.2s ease, transform 0.2s ease;
    display: flex;
    align-items: center;
}

.github-link svg {
    width: 36px;
    height: 36px;
}

.github-link:hover {
    color: var(--text-color);
    transform: scale(1.1);
}

h1 { 
    font-size: 2.5rem; 
    margin-bottom: 1rem; 
    color: var(--text-color);
    font-weight: 700;
}

h2 { 
    font-size: 1.8rem; 
    margin: 3rem 0 1rem 0; 
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-color);
}

h3 { 
    font-size: 1.3rem; 
    margin: 2rem 0 0.8rem 0; 
    color: var(--text-color);
}

p { 
    margin-bottom: 1rem; 
    color: var(--muted-text);
    font-size: 1rem;
    line-height: 1.7;
}

.lead {
    font-size: 1.1rem;
    color: var(--text-color);
}

strong { 
    color: var(--text-color);
}

/* Code */
code {
    background: var(--code-bg);
    color: var(--text-color);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', monospace;
    font-size: 0.85em;
}

pre {
    background: #f5f5f5;
    color: var(--text-color);
    padding: 1.5rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    border: 1px solid var(--border-color);
    position: relative;
}

/* Prism.js overrides */
pre[class*="language-"],
code[class*="language-"] {
    background: #f5f5f5;
    font-family: 'Fira Code', monospace;
}

.token.comment { color: #6a737d; }
.token.keyword { color: #ff7b72; }
.token.string { color: #a5d6ff; }
.token.function { color: #d2a8ff; }
.token.number { color: #79c0ff; }
.token.operator { color: #ff7b72; }
.token.class-name { color: #ffa657; }
.token.builtin { color: #79c0ff; }
.token.boolean { color: #79c0ff; }
.token.decorator { color: #ffa657; }

pre code {
    background: transparent;
    padding: 0;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    padding: 0.4rem;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--muted-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-btn:hover {
    background: var(--border-color);
    color: var(--text-color);
}

.copy-btn.copied {
    color: #4ade80;
}

/* Lists */
ul, ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
    color: var(--muted-text);
}

li {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.95rem;
}

th, td {
    padding: 0.8rem 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

th {
    background: var(--sidebar-bg);
    color: var(--text-color);
    font-weight: 600;
    font-size: 0.85rem;
}

td {
    color: var(--muted-text);
}

/* Sections */
section {
    margin-bottom: 3rem;
    scroll-margin-top: 2rem;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

/* Responsive */
@media (max-width: 900px) {
    .sidebar { display: none; }
    .main-content { margin-left: 0; padding: 2rem 1rem; }
    .content-wrapper { padding: 0; }
    h1 { font-size: 2rem; }
}