:root {
    --primary: #0070f3;
    --text: #24292f;
    --text-muted: #57606a;
    --border: #d0d7de;
    --bg: #ffffff;
    --bg-subtle: #f6f8fa;
    --header-h: 56px;
    --sidebar-w: 260px;
}
*,
*::before,
*::after {
    box-sizing: border-box;
}
body {
    font-family:
        -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    line-height: 1.6;
    margin: 0;
    color: var(--text);
    background: var(--bg);
}

/* Header - fixed top */
.docs-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    z-index: 100;
}
.docs-header .logo {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text);
    text-decoration: none;
    margin-right: 2rem;
}
.docs-header nav {
    display: flex;
    gap: 1.5rem;
}
.docs-header nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
}
.docs-header nav a:hover {
    color: var(--primary);
}

/* Layout container */
.docs-container {
    display: flex;
    padding-top: var(--header-h);
    min-height: 100vh;
}

/* Sidebar - fixed */
.docs-sidebar {
    position: fixed;
    top: var(--header-h);
    left: 0;
    width: var(--sidebar-w);
    height: calc(100vh - var(--header-h));
    background: var(--bg-subtle);
    border-right: 1px solid var(--border);
    padding: 1.5rem 1rem;
    overflow-y: auto;
}
.sidebar-section {
    margin-bottom: 1.5rem;
}
.sidebar-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
    padding-left: 0.5rem;
}
.sidebar-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sidebar-links li {
    margin-bottom: 2px;
}
.sidebar-links a {
    display: block;
    padding: 0.35rem 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 4px;
    font-size: 0.875rem;
}
.sidebar-links a:hover {
    background: var(--border);
    color: var(--text);
}
.sidebar-links a.active {
    background: var(--primary);
    color: white;
}

/* Main content */
.docs-main {
    flex: 1;
    margin-left: var(--sidebar-w);
    padding: 2rem 3rem;
    max-width: 800px;
}
.docs-main h1 {
    font-size: 1.75rem;
    margin: 0 0 1.5rem 0;
    font-weight: 600;
}
.docs-main h2 {
    font-size: 1.35rem;
    margin: 2rem 0 1rem 0;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border);
}
.docs-main h3 {
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem 0;
}

/* Typography */
code {
    background: var(--bg-subtle);
    padding: 0.15rem 0.35rem;
    border-radius: 4px;
    font-size: 0.85em;
    font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}
pre {
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    border: 1px solid var(--border);
}
pre code {
    background: none;
    padding: 0;
}
a {
    color: var(--primary);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Info boxes */
.info-box {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin: 1rem 0;
    border-left: 3px solid;
    font-size: 0.9rem;
}
.info-box.note {
    background: #ddf4ff;
    border-color: #54aeff;
}
.info-box.warning {
    background: #fff8c5;
    border-color: #d4a72c;
}
.info-box.tip {
    background: #dafbe1;
    border-color: #4ac26b;
}

/* Section list */
ul.section-list {
    list-style: none;
    padding: 0;
}
ul.section-list li {
    margin-bottom: 0.5rem;
    padding: 0.6rem 0.75rem;
    background: var(--bg-subtle);
    border-radius: 6px;
    border: 1px solid var(--border);
}
ul.section-list li a {
    font-weight: 500;
}
nav.pagination {
    margin: 1.5rem 0;
}
nav.pagination .pagination-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    align-items: center;
}
nav.pagination a {
    display: inline-block;
    padding: 0.25rem 0.55rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    text-decoration: none;
}
nav.pagination a:hover {
    color: var(--primary);
    border-color: var(--primary);
}
.pagination-current span {
    display: inline-block;
    padding: 0.25rem 0.55rem;
    border-radius: 6px;
    border: 1px solid var(--primary);
    background: color-mix(in srgb, var(--primary) 12%, transparent);
}
.pagination-disabled span {
    display: inline-block;
    padding: 0.25rem 0.55rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    opacity: 0.6;
}

/* Footer */
.docs-footer {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 768px) {
    .docs-sidebar {
        display: none;
    }
    .docs-main {
        margin-left: 0;
        padding: 1.5rem 1rem;
    }
}