:root {
    --color-bg: #ffffff;
    --color-fg: #222222;
    --color-accent: #2f8f3a;
    --color-muted: #f7f7f7;
    --color-border: #e2e2e2;
    --color-sidebar-bg: #fafafa;
    --color-sidebar-border: #dcdcdc;
    --color-code-bg: #f4f6f8;
    --color-heading: #0f172a;

    --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.04);

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2.5rem;
    --space-2xl: 3.5rem;

    --font-body: "Open Sans", system-ui, -apple-system, sans-serif;
    --font-heading: "Open Sans", system-ui, -apple-system, sans-serif;
    --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-fg);
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

p {
    margin: 0 0 var(--space-lg);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.25;
    color: var(--color-heading);
    margin: var(--space-xl) 0 var(--space-sm);
}

h1 {
    font-size: 2.3rem;
}

h2 {
    font-size: 1.8rem;
}

h3 {
    font-size: 1.45rem;
}

h4 {
    font-size: 1.2rem;
}

h1 + p,
h2 + p,
h3 + p,
h4 + p {
    margin-top: var(--space-sm);
}

a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    text-decoration: underline;
    text-decoration-thickness: 2px;
}

a:visited {
    color: var(--color-accent);
}

.skip-link {
    position: absolute;
    left: -999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 1000;
    background: var(--color-bg);
    padding: var(--space-sm) var(--space-md);
    border: 2px solid var(--color-accent);
    border-radius: 8px;
}

.skip-link:focus {
    left: var(--space-md);
    top: var(--space-md);
    width: auto;
    height: auto;
}

img {
    max-width: 100%;
    height: auto;
}

.site-width {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(var(--space-md), 3vw, var(--space-lg));
}

.site-header .site-width {
    max-width: none;
    width: 100%;
    margin: 0;
    padding-inline: clamp(var(--space-sm), 3vw, var(--space-md));
}

.main-nav .site-width {
    max-width: 100%;
    padding-left: var(--space-md);
    padding-right: var(--space-lg);
}

.header-container {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) 0;
    border-bottom: 1px solid var(--color-border);
}

.site-home-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: inherit;
    text-decoration: none;
    font-weight: inherit;
    cursor: default;
}

.site-home-link:hover,
.site-home-link:focus {
    color: inherit;
    text-decoration: none;
}

.site-home-link:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 4px;
    border-radius: 10px;
}

.site-logo {
    height: 40px;
    width: auto;
}

.site-title {
    margin: 0;
    font-size: 1.35rem;
    font-weight: 600;
}

.main-nav {
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
    padding: calc(var(--space-xs) / 2) 0;
}

.nav-toggle {
    display: none;
    background: none;
    border: 1px solid var(--color-border);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 6px;
    font-weight: 600;
    color: var(--color-fg);
    cursor: pointer;
}

.nav-links {
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin: 0;
    padding: 0;
    flex: 1;
    flex-wrap: wrap;
}

.nav-item {
    position: relative;
    margin: 0;
}

.nav-links a,
.nav-parent {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-sm);
    letter-spacing: 0.03em;
    text-transform: uppercase;
    font-size: 0.92rem;
    font-weight: 600;
    border-bottom: 2px solid transparent;
    background: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--color-accent);
}

.nav-links a {
    cursor: pointer;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-parent:hover,
.nav-parent:focus-visible {
    border-bottom-color: var(--color-accent);
    text-decoration: none;
}

.nav-links a[aria-current="page"] {
    border-bottom-color: var(--color-accent);
    background: color-mix(in srgb, var(--color-accent) 12%, transparent);
    border-radius: 8px;
    padding-inline: var(--space-sm);
}

.nav-parent {
    border: 1px solid transparent;
}

.nav-caret {
    font-size: 0.75em;
    transition: transform 0.2s ease;
}

.has-children.is-open .nav-caret {
    transform: rotate(180deg);
}

.has-children.is-active > .nav-parent {
    border-bottom-color: var(--color-accent);
    background: color-mix(in srgb, var(--color-accent) 12%, transparent);
    color: var(--color-accent);
}

.nav-submenu {
    list-style: none;
    margin: 0;
    padding: var(--space-sm) 0;
    position: absolute;
    left: 0;
    top: calc(100% + 6px);
    min-width: 220px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 10px;
    box-shadow: var(--shadow-soft);
    display: none;
    z-index: 50;
}

.nav-submenu li {
    width: 100%;
}

.nav-submenu a {
    width: 100%;
    border-bottom: none;
    padding: var(--space-xs) var(--space-md);
    text-transform: none;
    letter-spacing: normal;
    justify-content: space-between;
}

.has-children.is-open > .nav-submenu {
    display: block;
}

@media (min-width: 769px) {
    .has-children:hover > .nav-submenu,
    .has-children:focus-within > .nav-submenu {
        display: block;
    }
}

.content-wrapper {
    display: grid;
    grid-template-columns: minmax(220px, 260px) minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: start;
    width: 100%;
    padding: var(--space-md) clamp(var(--space-sm), 3vw, var(--space-md)) var(--space-xl);
}

.page-content {
    max-width: 76ch;
    width: 100%;
}

.page-content h1:first-of-type {
    margin-top: 0;
}

.page-content > * + * {
    margin-top: var(--space-lg);
}

.page-content section + section,
.page-content h2 + *,
.page-content h3 + * {
    margin-top: var(--space-md);
}

.page-content ul,
.page-content ol {
    padding-left: 1.2em;
    margin: 0 0 var(--space-md);
}

.toc-sidebar {
    background: var(--color-sidebar-bg);
    border: 1px solid var(--color-sidebar-border);
    border-radius: 12px;
    padding: var(--space-md);
    position: sticky;
    top: var(--space-lg);
    max-height: 80vh;
    overflow: hidden;
    font-size: 0.95rem;
    box-shadow: var(--shadow-soft);
    display: grid;
    grid-template-rows: auto 1fr;
    gap: var(--space-sm);
}

.toc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-sm);
}

.toc-header h2 {
    margin: 0;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.sidebar-toggle {
    display: none;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--space-xs) var(--space-sm);
    cursor: pointer;
    font-weight: 700;
}

.sidebar-reveal {
    display: none;
    margin-bottom: var(--space-sm);
    background: color-mix(in srgb, var(--color-accent) 12%, var(--color-bg));
    border: 1px solid color-mix(in srgb, var(--color-accent) 45%, var(--color-border));
    border-radius: 10px;
    padding: var(--space-sm) var(--space-md);
    font-weight: 700;
    cursor: pointer;
    color: var(--color-accent);
    letter-spacing: 0.02em;
    box-shadow: var(--shadow-soft);
    white-space: nowrap;
}

.sidebar-reveal:hover,
.sidebar-reveal:focus-visible {
    background: color-mix(in srgb, var(--color-accent) 20%, var(--color-bg));
    border-color: var(--color-accent);
    outline: 2px solid transparent;
    outline-offset: 2px;
}

.toc-body {
    overflow-y: auto;
    padding-right: var(--space-xs);
    scroll-padding-top: var(--space-lg);
    height: 100%;
}

.toc-sidebar nav ul {
    list-style: none;
    list-style-type: none;
    padding: 0;
    margin: 0;
}

.toc-sidebar nav > ul > li + li {
    border-top: 1px solid var(--color-sidebar-border);
    padding-top: var(--space-xs);
    margin-top: var(--space-xs);
}

.toc-sidebar nav ul li {
    margin: 0 0 var(--space-xs);
    position: relative;
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    column-gap: var(--space-xs);
}

.toc-sidebar nav ul li a {
    color: var(--color-fg);
    font-weight: 600;
    padding: var(--space-xs) var(--space-sm) var(--space-xs) 0;
    display: block;
    border-radius: 8px;
    transition: background 0.2s ease, color 0.2s ease;
    flex: 1 1 auto;
    min-width: 0;
}

.toc-sidebar nav li::marker {
    content: '';
}

.toc-sidebar nav ul li a:hover,
.toc-sidebar nav ul li a:focus {
    color: var(--color-accent);
    background: color-mix(in srgb, var(--color-accent) 10%, transparent);
    outline: none;
}

.toc-sidebar nav ul ul li a {
    padding-left: var(--space-md);
    font-size: 0.92rem;
}

.toc-sidebar nav ul li.active > a {
    color: var(--color-accent);
    font-weight: 700;
    background: color-mix(in srgb, var(--color-accent) 16%, transparent);
    /* box-shadow: inset 3px 0 0 var(--color-accent);  remove this */
}

.toc-toggle {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--color-fg);
    margin-right: 0;
    font-size: 1em;
    line-height: 1;
    width: 1.1em;
    height: 1.1em;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
}

.toc-sidebar nav ul li > ul {
    flex-basis: 100%;
}

.toc-collapsed > ul {
    display: none;
}

.toc-collapsed > .toc-toggle::after,
.toc-expandable > .toc-toggle::after {
    content: '';
}

code {
    background: var(--color-code-bg);
    color: #0f172a;
    padding: 4px 8px;
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 92%;
    border: 1px solid var(--color-border);
}

pre {
    background: var(--color-code-bg);
    color: var(--color-fg);
    padding: var(--space-lg);
    border-radius: 12px;
    border: 1px solid var(--color-border);
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.97rem;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.6), var(--shadow-soft);
}

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

.table-spacing {
    width: 100%;
    border-collapse: collapse;
    margin: var(--space-md) 0;
    font-size: 0.95rem;
}

.callout {
    border: 1px solid var(--color-callout-border);
    border-left-width: 6px;
    border-radius: 12px;
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    background: #fff;
}

.callout > strong {
    display: inline-block;
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.callout.note {
    border-color: #4690e6;
    background: var(--color-callout-note);
}

.callout.info {
    border-color: #38a169;
    background: var(--color-callout-info);
}

.callout.warning {
    border-color: #f59e0b;
    background: var(--color-callout-warn);
}

.table-spacing th,
.table-spacing td {
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
}

.api-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin: var(--space-lg) 0;
}

.api-table th,
.api-table td {
    border: 1px solid var(--color-border);
    padding: var(--space-sm) var(--space-md);
    text-align: left;
}

.api-table th {
    background: var(--color-muted);
    font-weight: 700;
}

.command-block,
.code-example-group {
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--space-md);
    margin: var(--space-lg) 0;
    background: #fff;
    box-shadow: var(--shadow-soft);
}

.code-example-group pre {
    margin-top: var(--space-sm);
}

.table-spacing th {
    background: var(--color-muted);
    color: var(--color-fg);
    text-align: left;
    font-weight: 700;
}

.table-spacing tr:hover {
    background: #f0f0f0;
}

footer {
    border-top: 1px solid var(--color-border);
    margin-top: var(--space-xl);
    padding: var(--space-lg) var(--space-lg) var(--space-xl);
    font-size: 0.95rem;
    text-align: center;
    color: #555555;
}

.heading-anchor {
    margin-left: var(--space-xs);
    opacity: 0;
    transition: opacity 0.2s ease;
    color: var(--color-accent);
    font-size: 0.9rem;
}

h1:hover .heading-anchor,
h2:hover .heading-anchor,
h3:hover .heading-anchor,
h4:hover .heading-anchor {
    opacity: 1;
}

@media (max-width: 1024px) {
    .content-wrapper {
        grid-template-columns: 1fr;
    }

    .sidebar-reveal {
        display: inline-flex;
        align-items: center;
        gap: var(--space-xs);
    }

    .toc-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: min(80%, 320px);
        height: 100vh;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 900;
        border-radius: 0;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
    }

    .toc-sidebar.is-open {
        transform: translateX(0);
    }

    .sidebar-toggle {
        display: inline-flex;
    }
}

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }

    .site-width {
        padding: 0 var(--space-md);
    }

    .header-container {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
        padding: var(--space-xs) 0;
    }

    .site-title {
        font-size: 1.4rem;
    }

    .nav-inner {
        flex-wrap: wrap;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .nav-links {
        width: 100%;
        display: none;
        flex-direction: column;
        align-items: flex-start;
        padding: 0 0 var(--space-sm);
    }

    .nav-links.is-open {
        display: flex;
    }

    .nav-links a {
        padding: var(--space-xs) 0;
    }

    .nav-submenu {
        position: static;
        width: 100%;
        padding-left: var(--space-sm);
        box-shadow: none;
        border: 1px solid var(--color-border);
        border-radius: 8px;
        margin-bottom: var(--space-xs);
    }

    .content-wrapper {
        padding: var(--space-md) var(--space-md);
    }

    .toc-sidebar {
        top: 0;
    }
}

@media (max-width: 480px) {
    .header-container {
        align-items: center;
        text-align: center;
        padding: var(--space-xs) 0;
    }

    .site-width {
        padding: 0 var(--space-sm);
    }

    .content-wrapper {
        padding: var(--space-md) var(--space-sm);
    }
}