:root {
    --accent: #e66100;
    --bg: #161616;
    --mg: #2b2b2b;
    --fg: #f0eeee;
    --scrollbar-track: #23242b;
    --scrollbar-thumb: #3a3c44;
    --header-height: 60px;
    --code-bg: #1e1f24;
    --code-fg: #eaeaea;
    --table-bg: #1d1d1d;
    --table-border: #3a3c44;
    --note-bg: #144d7a;
    --tip-bg: #23592e;
    --warning-bg: #5a3b04;
    --caution-bg: #653307;
}

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

html {
    scroll-padding-top: calc(var(--header-height) + 32px);
    scroll-behavior: auto;
}

body {
    background: var(--bg);
    color: var(--fg);
    font-family: sans-serif;
    line-height: 1.7;
    scrollbar-width: thin;
    scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track);
}

body,
.sidebar,
.search-modal {
    --sb-track: var(--scrollbar-track);
    --sb-thumb: var(--scrollbar-thumb);
}

body::-webkit-scrollbar,
.sidebar::-webkit-scrollbar,
.search-modal::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

body::-webkit-scrollbar-track,
.sidebar::-webkit-scrollbar-track,
.search-modal::-webkit-scrollbar-track {
    background: var(--sb-track);
}

body::-webkit-scrollbar-thumb,
.sidebar::-webkit-scrollbar-thumb,
.search-modal::-webkit-scrollbar-thumb {
    background: var(--sb-thumb);
    border-radius: 6px;
    border: 2px solid var(--sb-track);
}

body::-webkit-scrollbar-thumb:hover,
.sidebar::-webkit-scrollbar-thumb:hover,
.search-modal::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.15s;
}

a:hover {
    text-decoration: underline;
    color: #ff7d26;
}

.header {
    position: sticky;
    top: 0;
    height: var(--header-height);
    background: var(--mg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    z-index: 10;
}

.site-name {
    position: absolute;
    left: 20px;
    font-weight: bold;
    font-size: 18px;
    color: var(--fg);
}

.search-wrapper {
    position: relative;
    width: 100%;
    max-width: 500px;
}

.search-wrapper .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    fill: var(--fg);
    pointer-events: none;
}

#searchInput {
    width: 100%;
    padding: 10px 14px 10px 40px;
    background: #2a2c33;
    border: 1px solid #3a3c44;
    border-radius: 6px;
    color: var(--fg);
    font-size: 16px;
    caret-color: var(--accent);
    outline: none;
    transition: border-color 0.2s;
}

#searchInput:focus {
    border-color: var(--accent);
}

#searchOverlay {
    display: none;
    position: fixed;
    inset: 0;
    backdrop-filter: blur(5px);
    background: rgba(0, 0, 0, 0.5);
    z-index: 20;
    animation: fadeIn 0.3s ease forwards;
}

.search-modal {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    max-width: 700px;
    background: #2a2c33;
    border-radius: 8px;
    padding: 20px;
    overflow-y: auto;
    max-height: 80%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: slideDown 0.3s ease forwards;
}

.search-modal header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.search-modal header input {
    flex: 1;
    padding: 10px 14px;
    background: #1e1f24;
    border: 1px solid #3a3c44;
    border-radius: 6px;
    color: var(--fg);
    font-size: 16px;
    outline: none;
}

.search-modal header button {
    background: none;
    border: none;
    color: var(--fg);
    font-size: 24px;
    cursor: pointer;
    margin-left: 12px;
}

.results-group {
    margin-top: 20px;
}

.results-group h4 {
    margin-bottom: 8px;
    font-size: 14px;
    text-transform: uppercase;
    opacity: 0.8;
}

.results-group .item {
    padding: 10px;
    border-left: 2px solid transparent;
    transition: background 0.2s, border-left-color 0.2s;
    cursor: pointer;
}

.results-group .item:hover {
    background: #3a3c44;
    border-left-color: var(--accent);
}

.container {
    display: grid;
    grid-template-columns:
        250px                /* sidebar */
        minmax(20px, 1fr)    /* spacer */
        minmax(0, 1000px)    /* main content */
        1fr                  /* spacer */
        minmax(240px, 260px) /* TOC */
        1fr;                 /* spacer */

    gap: 20px 0;
    padding: 20px;
    width: 100%;
}

.sidebar {
    background: var(--mg);
    border-radius: 6px;
    padding: 20px;
    position: sticky;
    top: calc(var(--header-height) + 20px);
    left: 20px;
    width: 250px;
    height: calc(100vh - var(--header-height) - 40px);
    overflow-y: auto;
}

.main {
    grid-column: 3 / 4;
    padding: 0 20px;
}

.sidebar-toc {
    grid-column: 5 / 6;
    position: sticky;
    top: calc(var(--header-height) + 40px);
    padding: 0 0 0 40px;
    border-left: 1px solid var(--mg);
    max-height: calc(100vh - var(--header-height) - 40px);
    overflow-y: auto;
}

.sidebar ul {
    list-style: none;
}

.sidebar li {
    padding: 8px 0;
}

.sidebar li+li {
    border-top: 1px solid #3a3c44;
}

.sidebar a {
    color: var(--fg);
}

.sidebar a.active {
    color: var(--accent);
    font-weight: bold;
}

.sidebar details.folder>summary {
    list-style: none;
    padding: 8px 0;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--fg);
    font-weight: 600;
    text-transform: capitalize;
}

.sidebar details.folder>summary::-webkit-details-marker {
    display: none;
}

.sidebar details.folder>summary::after {
    content: '>';
    transition: transform 0.3s ease;
}

.sidebar details.folder[open]>summary::after {
    transform: rotate(90deg);
}

.sidebar details.folder>ul {
    list-style: none;
    margin: 0;
    padding-left: 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    border-left: 2px solid #3a3c44;
}

.sidebar details.folder[open]>ul {
    max-height: 1000px;
}

.sidebar details.folder>ul>li:first-child {
    border-top: none;
}

.sidebar-toc h3 {
    font-size: 16px;
    margin-bottom: 12px;
    padding-bottom: 4px;
}

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

.sidebar-toc li {
    margin-bottom: 6px;
}

.sidebar-toc a {
    color: var(--fg);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
    display:block;
    position:relative;
    padding:4px 0 4px 14px;
}

.sidebar-toc a::before{
    content:'';
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    width:4px;
    background:var(--accent);
    border-radius:2px;
    opacity:0;
    transform:scaleY(0);
    transition:opacity .15s ease, transform .15s ease;
}

.sidebar-toc a:hover {
    color: var(--accent);
}

.sidebar-toc a.active{
    color: var(--accent);
    font-weight: bold;
}

.sidebar-toc a.active::before{
    opacity:1;
    transform:scaleY(1);
}

.sidebar-toc li ul {
    margin-top: 4px;
    margin-left: 12px;
}

.sidebar-toc li ul li {
    margin-bottom: 4px;
    font-size: 13px;
    opacity: 0.8;
}

.callout {
    background: var(--accent);
    color: #fff;
    border-radius: 6px;
    padding: 16px;
    margin-bottom: 24px;
    transform: translateY(10px);
    opacity: 0;
    animation: fadeUp 0.5s 0.3s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translate(-50%, -20px);
        opacity: 0;
    }

    to {
        transform: translate(-50%, 0);
        opacity: 1;
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1200px) {

    .header {
        z-index: 100;
    }

    .container {
        grid-template-columns: 70dvw clamp(140px, 22vw, 220px);
        gap: 0;
    }

    .main {
        grid-column: 1 / 2;
        padding: 0 20px;
    }

    .sidebar {
        position: fixed;
        top: var(--header-height);
        left: 0;
        height: calc(100vh - var(--header-height));
        width: 80vw;
        max-width: 400px;
        transform: translateX(-100%);
        transition: transform .3s ease;
        z-index: 50;
    }

    .sidebar-overlay {
        position: fixed;
        inset: var(--header-height) 0 0 0;
        background: rgba(0,0,0,.45);
        backdrop-filter: blur(4px);
        opacity: 0;
        pointer-events: none;
        transition: opacity .3s ease;
        z-index: 40;
    }

    .sidebar-toggle {
        position: fixed;
        top: calc(var(--header-height) + 10px);
        left: 10px;
        width: 28px;
        height: 28px;
        border-radius: 45%;
        background: var(--mg);
        color: var(--fg);
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 60;
        transform: translateX(0);
        transition: transform .3s ease, background .3s ease, color .3s ease;
    }

    .sidebar-toggle::before {
        content: '';
        width: 12px;
        height: 12px;
        mask: url('data:image/svg+xml;utf8, <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"> <polyline points="8 4 16 12 8 20" fill="none" stroke="white" stroke-width="3"  stroke-linecap="round" stroke-linejoin="round"/></svg>');
        background: currentColor;
        transition: transform .3s ease;
    }

    #navToggle:checked ~ .container .sidebar {
        transform: translateX(0);
    }

    #navToggle:checked + .sidebar-toggle::before {
        transform: rotate(180deg);
    }

    #navToggle:checked + .sidebar-toggle {
        background: var(--bg);
        color: var(--accent);
        transform: translateX(calc(min(80vw, 400px) - 28px - 32px));
    }

    #navToggle:checked ~ .sidebar-overlay {
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar-toc {
        grid-column: 2 / 3;
        max-height: calc(100vh - var(--header-height) - 40px);
        overflow-y: auto;
        border-left: 1px solid var(--mg);
        padding-left: 20px;
    }

}


@media (max-width: 800px) {

    .container {
        display: inline;
    }

    .main {
        padding: 0 20px;
    }


    .sidebar-toc {
        display: none;
    }

    .document-content #toc {
        display: block;
        background: var(--mg);
        border-radius: 6px;
        padding: 16px 20px;
        margin-bottom: 32px;
    }

    .document-content #toc #toctitle {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 10px;
        color: var(--fg);
    }

    .document-content #toc ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .document-content #toc ul ul {
        padding-left: 14px;
        margin: 0;
    }

    .document-content #toc li {
        margin-bottom: 4px;
    }

    .document-content #toc a {
        color: var(--fg);
        font-size: 14px;
        display: block;
        padding: 3px 0 3px 12px;
        border-left: 2px solid transparent;
        transition: color 0.15s, border-color 0.15s;
    }

    .document-content #toc a:hover {
        color: var(--accent);
        border-left-color: var(--accent);
        text-decoration: none;
    }

    .search-wrapper {
        max-width: 40svw;
    }
}

.folder-heading {
    font-size: 22px;
    margin-top: 32px;
    margin-bottom: 4px;
    padding-bottom: 6px;
    border-bottom: 2px solid var(--accent);
    color: var(--fg);
    text-transform: capitalize;
}

.doc-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
    margin-top: 16px;
}

.doc-card {
    background: #23242b;
    border-radius: 12px;
    padding: 16px;
    text-decoration: none;
    transition: background 0.2s, transform 0.2s;
}

.doc-card:hover {
    background: #2a2c33;
    transform: translateY(-6px) scale(1.06);
}

.doc-card h2,
.doc-card h3 {
    margin-bottom: 8px;
    font-size: 18px;
    color: var(--accent);
}

.doc-card p {
    font-size: 14px;
    opacity: 0.8;
    line-height: 1.2;
}

/* doc header */
.doc-header {
    margin-bottom: 32px;
    padding-bottom: 20px;
    border-bottom: 1px solid #3a3c44;
}

.doc-header h1 {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--fg);
    margin: 0 0 12px 0;
}

.doc-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 16px;
    font-size: 14px;
    opacity: 0.75;
    margin-bottom: 12px;
}

.doc-meta .doc-authors {
    color: var(--accent);
    font-weight: 600;
}

.doc-meta .doc-date::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--fg);
    vertical-align: middle;
    margin-right: 8px;
    opacity: 0.5;
}

.doc-meta .doc-revision {
    background: #3a3c44;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-family: ui-monospace, Menlo, Consolas, monospace;
}

.doc-description {
    font-size: 16px;
    font-style: italic;
    opacity: 0.85;
    line-height: 1.6;
    margin: 0;
}

/* content styles */
.document-content {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.document-content .toc {
    display: none;
}

.document-content h1,
.document-content h2,
.document-content h3,
.document-content h4,
.document-content h5,
.document-content h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--fg);
    margin: 32px 0 16px 0;
}

.document-content h1 {
    font-size: 32px;
}

.document-content h2 {
    font-size: 28px;
}

.document-content h3 {
    font-size: 24px;
}

.document-content h4 {
    font-size: 20px;
}

.document-content h5 {
    font-size: 18px;
}

.document-content h6 {
    font-size: 16px;
}

.document-content p,
.document-content .paragraph {
    margin-bottom: 16px;
    font-size: 16px;
}

.document-content img {
    max-width: 100%;
    border-radius: 4px;
}

.document-content pre,
.document-content code {
    font-family: ui-monospace, Menlo, Consolas, monospace;
}

.document-content pre {
    background: var(--code-bg);
    color: var(--code-fg);
    padding: 16px;
    border-radius: 6px;
    overflow-x: auto;
    margin-bottom: 20px;
    font-size: 14px;
}

.document-content code {
    background: var(--code-bg);
    color: var(--code-fg);
    border-radius: 4px;
    font-size: 90%;
}

.rouge {
    background: var(--code-bg);
}

.rouge .highlight {
    background: none;
}

.document-content blockquote,
.document-content .quoteblock blockquote {
    border-left: 4px solid var(--accent);
    margin: 0 0 16px 0;
    padding-left: 16px;
    font-style: italic;
    opacity: 0.9;
}

.document-content .verseblock pre {
    background: transparent;
    padding-left: 0;
}

.document-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.document-content .halign-left {
    text-align: left;
}

.document-content .halign-center {
    text-align: center;
}

.document-content .halign-right {
    text-align: right;
}

.document-content .valign-top {
    vertical-align: top;
}

.document-content .valign-middle {
    vertical-align: middle;
}

.document-content .valign-bottom {
    vertical-align: bottom;
}


.document-content th,
.document-content td {
    border: 1px solid var(--table-border);
    padding: 12px 10px;
}

.document-content thead {
    background: var(--table-bg);
}

.document-content tbody tr:nth-child(odd) {
    background: #1f1f1f;
}

.document-content tbody tr:nth-child(even) {
    background: #222;
}

.document-content .tableblock caption {
    caption-side: top;
    font-weight: bold;
    margin-bottom: 8px;
}

.document-content ul,
.document-content ol {
    margin-left: 24px;
    margin-bottom: 16px;
}

.document-content li {
    margin-bottom: 6px;
}

.document-content hr {
    border: none;
    height: 1px;
    background: var(--table-border);
    margin: 40px 0;
}

.document-content .admonitionblock {
    margin: 24px 0;
    border-radius: 6px;
    overflow: hidden;
}

.document-content .admonitionblock.note {
    border-left-color: var(--note-bg);
}

.document-content .admonitionblock.tip {
    border-left-color: var(--tip-bg);
}

.document-content .admonitionblock.warning {
    border-left-color: var(--warning-bg);
}

.document-content .admonitionblock.caution {
    border-left-color: var(--caution-bg);
}

.document-content .admonitionblock table {
    width: 100%;
    border: none;
    background: #1f1f23;
}

.document-content .admonitionblock td.icon {
    width: 26px;
    text-align: center;
    font-size: 24px;
    color: var(--accent);
    background: #26272c;
}

.document-content .admonitionblock.note td.icon {
    background: var(--note-bg);
}

.document-content .admonitionblock.tip td.icon {
    background: var(--tip-bg);
}

.document-content .admonitionblock.warning td.icon {
    background: var(--warning-bg);
}

.document-content .admonitionblock.caution td.icon {
    background: var(--caution-bg);
}

.document-content .admonitionblock td.content {
    padding: 16px;
}

.document-content .admonitionblock .title {
    font-weight: bold;
    margin-bottom: 8px;
}

.document-content .dlist dt,
.document-content .hdlist1 {
    font-weight: bold;
}

.document-content .conum {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    text-align: center;
    font-size: 12px;
    margin-right: 4px;
}

.document-content #footnotes {
    font-size: 14px;
    opacity: 0.9;
    border-top: 1px solid var(--table-border);
    margin-top: 40px;
    padding-top: 24px;
}

.document-content #footnotes a {
    color: var(--accent);
}

.document-content .sidebarblock {
    background: #222428;
    border-left: 4px solid var(--accent);
    padding: 16px 20px;
    border-radius: 6px;
    margin: 24px 0;
}

.document-content .sidebarblock .title {
    font-weight: bold;
    margin-bottom: 8px;
}

.document-content .listingblock .title,
.document-content .exampleblock .title,
.document-content .tableblock .title {
    font-weight: bold;
    margin-bottom: 8px;
}

.document-content .listingblock {
    margin-bottom: 24px;
}

.document-content .listingblock pre {
    margin: 0;
}

.document-content .exampleblock {
    background: #1d1d21;
    border-left: 4px solid var(--accent);
    padding: 16px 20px;
    border-radius: 6px;
    margin-bottom: 24px;
}

.document-content .openblock {
    background: #1d1d21;
    border-left: 4px solid #3a3c44;
    padding: 16px 20px;
    border-radius: 6px;
    margin-bottom: 24px;
}

.code-block {
    margin-bottom: 24px;
    border-radius: 6px;
    overflow: hidden;
    background: var(--code-bg);
    position: relative
}

.code-block pre {
    margin: 0;
    border-radius: 0;
    padding-top: 48px
}

.code-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px;
    background: #202124;
    border-bottom: 1px solid #2e2f34;
    font-size: 12px;
    line-height: 1;
    text-transform: uppercase;
    user-select: none
}

.code-header .lang {
    color: var(--accent);
    font-weight: 600
}

.copy-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 0;
    color: var(--fg);
    cursor: pointer;
    font: inherit;
    padding: 6px
}

.copy-btn svg {
    pointer-events: none
}

.copy-btn:hover {
    color: var(--accent)
}

.copy-btn:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px
}

.site-footer {
    grid-column: 1 / -1;
    margin-top: 60px;
    padding: 24px 20px;
    background: var(--mg);
    color: var(--fg);
    font-size: 14px;
    text-align: center;
    line-height: 1.4;
    border-top: 1px solid #3a3c44;
}