body {
    line-height: 1.65;
}

body.nav-ready #menu-toggle {
    transition: left 0.2s ease;
}

body.nav-ready #sidebar {
    transition: transform 0.2s ease;
}

body.nav-ready main {
    transition: margin-left 0.2s ease;
}

#menu-toggle {
    display: block;
    position: fixed;
    top: 1.5rem;
    left: 14rem;
    z-index: 30;
    font-size: 1.6rem;
    padding: 0.1rem 1.5rem 0.25rem 1.5rem;
}

body.nav-closed #menu-toggle {
    left: 1rem;
}

#sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 18rem;
    overflow-y: auto;
    padding: 1.5rem 1rem 4rem 1.5rem;
    border-right: 1px solid #222;
    background: #050505;
    z-index: 20;
}

body.nav-closed #sidebar {
    transform: translateX(-100%);
}

.side-title {
    display: block;
    font-size: 1.2rem;
    font-weight: 550;
    margin-bottom: 0.25rem;
}

.side-sub {
    color: #666;
    font-size: 0.8rem;
    margin: 0 0 1.75rem 0;
}

.side-group {
    color: #666;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 1.5rem 0 0.5rem 0;
}

.side-link {
    display: block;
    padding: 0.3rem 0.5rem;
    color: #ccc;
    transition: all 0.15s ease;
}

.side-link:hover {
    background: #151515;
}

.side-link.current {
    background: #151515;
}

.side-num {
    color: #555;
    margin-right: 0.5rem;
}

main {
    margin-left: 21rem;
    padding: 4.5rem 1.25rem 4rem 1.25rem;
}

body.nav-closed main {
    margin-left: 0;
}

article {
    max-width: 52rem;
    margin: 0 auto;
}

#sidebar .back-link {
    color: #3b82f6;
    display: block;
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
}

.back-link:hover {
    color: white;
}

.crumb {
    color: #666;
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0;
}

h1 {
    font-size: 2rem;
    font-weight: 550;
    margin: 0.25rem 0 1.5rem 0;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid #222;
}

h2 {
    font-size: 1.4rem;
    font-weight: 550;
    margin: 3rem 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #1a1a1a;
}

h3 {
    font-size: 1.1rem;
    font-weight: 550;
    margin: 2rem 0 0.75rem 0;
    color: #ddd;
}

p {
    margin: 1rem 0;
}

ul {
    padding-left: 1.5rem;
}

li {
    margin: 0.5rem 0;
}

.lead {
    color: #bbb;
}

.muted {
    color: #888;
}

pre {
    background: #0b0b0b;
    border: 1px solid #222;
    padding: 1rem;
    overflow-x: auto;
    margin: 0;
}

pre code {
    background: none;
    padding: 0;
    color: #d8d8d8;
    white-space: pre;
}

.note {
    background: #151515;
    padding: 0.75rem 1rem;
    margin: 1.5rem 0;
}

.note p {
    margin: 0.35rem 0;
}

.note .note-label {
    color: #e1ff00;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.note.danger .note-label {
    color: rgb(253, 78, 78);
}

#page-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    max-width: 52rem;
    margin: 4rem auto 0 auto;
    padding-top: 2rem;
    border-top: 1px solid #222;
}

#page-nav a {
    max-width: 45%;
}

#page-nav .nav-dir {
    display: block;
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.6;
}

#toc-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(17rem, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.toc-card {
    text-align: left;
    padding: 1rem !important;
}

.toc-card h3 {
    margin: 0 0 0.25rem 0;
    color: inherit;
}

.toc-card p {
    margin: 0;
    font-size: 0.85rem;
    opacity: 0.7;
}