/* AllArkive public landing page — system fonts only, no external assets */

:root {
    --bg:          #d4bcc8;
    --bg-surface:  #c8aebb;
    --text:        #17191d;
    --text-muted:  #4a4d54;
    --accent:      #17191d;
    --border:      #17191d;
    --code-bg:     #c8aebb;
    --radius:      4px;
    --font-mono:   ui-monospace, 'SFMono-Regular', 'Cascadia Code', Menlo, Consolas, monospace;
    --font-body:   var(--font-mono);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    max-width: 760px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

a {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

a:hover { text-decoration: none; }

code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--code-bg);
    padding: 0.1em 0.35em;
    border-radius: var(--radius);
}

pre {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.9rem 1rem;
    overflow-x: auto;
    margin: 0.75rem 0;
}

pre code {
    background: transparent;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1.55;
}

pre.ascii code {
    font-size: 0.78rem;
    white-space: pre;
}

/* ── Header ───────────────────────────────────────────────────────────────── */
header {
    padding: 2rem 0 1.25rem;
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}

.header-top {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.wordmark {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-shrink: 0;
}

.wordmark-name {
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.wordmark-version {
    font-family: var(--font-mono);
    font-size: 0.78rem;
    color: var(--text-muted);
}

.section-nav {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.section-nav a {
    font-size: 0.85rem;
    text-decoration: none;
    padding: 0.3rem 0.7rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    background: var(--bg);
    white-space: nowrap;
    transition: border-color 0.1s, background 0.1s;
}

.section-nav a:hover {
    background: var(--bg-surface);
    border-color: var(--accent);
}

.tagline {
    font-size: 1.05rem;
    color: var(--text);
    line-height: 1.55;
    max-width: 60ch;
}

/* ── Sections ─────────────────────────────────────────────────────────────── */
section {
    margin-bottom: 2.75rem;
}

h2 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    letter-spacing: -0.005em;
}

h3 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

p {
    margin-bottom: 0.75rem;
    max-width: 65ch;
}

ul, ol {
    padding-left: 1.4rem;
    margin-bottom: 0.75rem;
    max-width: 65ch;
}

li {
    margin-bottom: 0.35rem;
}

.numbered {
    list-style: decimal;
}

.doc-list {
    list-style: none;
    padding-left: 0;
}

.doc-list li {
    padding: 0.15rem 0;
}

.muted {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0 2.25rem;
    margin-top: 1.5rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.7;
}

footer p { max-width: none; }

.footer-meta { margin-top: 0.35rem; }

/* ── Narrow screens ───────────────────────────────────────────────────────── */
@media (max-width: 520px) {
    body { padding: 0 1rem; }
    .wordmark-name { font-size: 1.25rem; }
    .tagline { font-size: 1rem; }
    h2 { font-size: 1.05rem; }
}

/* ── Doc pages (three-column layout) ──────────────────────────────────────── */
body.doc-page {
    max-width: none;
    padding: 0;
}

.doc-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr) 220px;
    gap: 2.5rem;
    max-width: 1280px;
    margin: 0 auto;
    padding: 1.75rem 1.5rem 3rem;
    align-items: start;
}

.doc-sidebar {
    position: sticky;
    top: 1.5rem;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
    border-right: 1px solid var(--border);
    padding-right: 1.25rem;
    font-size: 0.85rem;
    line-height: 1.5;
}

.sidebar-home {
    display: flex;
    align-items: baseline;
    gap: 0.4rem;
    text-decoration: none;
    color: var(--text);
    padding-bottom: 0.85rem;
    margin-bottom: 0.85rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-home-name {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.sidebar-home-tag {
    font-size: 0.72rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.doc-sidebar ul {
    list-style: none;
    padding-left: 0;
    margin: 0 0 1rem;
    max-width: none;
}

.doc-sidebar li { margin: 0; }

.doc-sidebar a {
    display: block;
    padding: 0.25rem 0.5rem;
    margin: 0 -0.5rem;
    color: var(--text);
    text-decoration: none;
    border-radius: var(--radius);
}

.doc-sidebar a:hover {
    background: var(--bg-surface);
}

.doc-sidebar a[aria-current="page"] {
    background: var(--accent);
    color: var(--bg);
    font-weight: 600;
}

.sidebar-section {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin: 1.1rem 0 0.4rem;
    max-width: none;
}

.sidebar-section:first-of-type { margin-top: 0; }

/* ── Sticky on-this-page TOC ──────────────────────────────────────────────── */
.doc-toc {
    position: sticky;
    top: 1.5rem;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
    border-left: 1px solid var(--border);
    padding-left: 1.25rem;
    font-size: 0.82rem;
    line-height: 1.5;
}

.doc-toc-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
    max-width: none;
}

.doc-toc ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
    max-width: none;
}

.doc-toc li { margin: 0.15rem 0; }

.doc-toc a {
    color: var(--text);
    text-decoration: none;
    display: block;
    padding: 0.1rem 0;
    border-left: 2px solid transparent;
    padding-left: 0.55rem;
    margin-left: -0.55rem;
}

.doc-toc a:hover {
    border-left-color: var(--accent);
}

.doc-toc .toc-h3 { padding-left: 1.4rem; font-size: 0.78rem; color: var(--text-muted); }
.doc-toc .toc-h3 a { color: var(--text-muted); }

.doc-toc a.is-active {
    border-left-color: var(--accent);
    color: var(--text);
    font-weight: 600;
}

.doc-toc .toc-h3 a.is-active {
    color: var(--text);
    font-weight: 600;
}

/* ── Main content column ──────────────────────────────────────────────────── */
.doc-main {
    min-width: 0;
}

.doc-breadcrumb {
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 1.25rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.doc-breadcrumb a {
    color: var(--text-muted);
    text-decoration: none;
}

.doc-breadcrumb a:hover { color: var(--accent); }

.doc-content {
    max-width: 70ch;
}

.doc-content h1 {
    font-size: 1.6rem;
    font-weight: 600;
    line-height: 1.25;
    margin-bottom: 1.25rem;
    letter-spacing: -0.01em;
}

.doc-content h2 {
    font-size: 1.15rem;
    margin-top: 2rem;
    margin-bottom: 0.6rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.doc-content h2:first-of-type { border-top: none; padding-top: 0; }

.doc-content h3 {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    text-transform: none;
    letter-spacing: 0;
    margin-top: 1.5rem;
    margin-bottom: 0.4rem;
}

.doc-content h4, .doc-content h5, .doc-content h6 {
    font-size: 0.88rem;
    font-weight: 600;
    margin-top: 1.1rem;
    margin-bottom: 0.35rem;
}

.doc-content p,
.doc-content ul,
.doc-content ol,
.doc-content blockquote {
    margin-bottom: 0.8rem;
    max-width: 70ch;
}

.doc-content ul, .doc-content ol {
    padding-left: 1.4rem;
}

.doc-content li { margin-bottom: 0.3rem; }
.doc-content li > p { margin-bottom: 0.3rem; }

.doc-content blockquote {
    border-left: 3px solid var(--accent);
    padding: 0.1rem 0 0.1rem 0.9rem;
    color: var(--text-muted);
}

.doc-content pre {
    margin: 0.85rem 0 1rem;
}

.doc-content table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    margin: 0.75rem 0 1rem;
}

.doc-content th,
.doc-content td {
    text-align: left;
    padding: 0.45rem 0.7rem;
    border-bottom: 1px solid var(--border);
    vertical-align: top;
}

.doc-content th {
    background: var(--bg-surface);
    font-weight: 600;
}

.doc-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.75rem 0;
}

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

.doc-footer {
    margin-top: 3rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.7;
}

.doc-footer code {
    font-size: 0.78rem;
}

/* ── Sidebar toggle (mobile) ──────────────────────────────────────────────── */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 0.75rem;
    left: 0.75rem;
    z-index: 30;
    font: inherit;
    font-size: 0.82rem;
    padding: 0.4rem 0.85rem;
    background: var(--accent);
    color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
}

/* ── Doc page responsive ──────────────────────────────────────────────────── */
@media (max-width: 1080px) {
    .doc-layout {
        grid-template-columns: 220px minmax(0, 1fr);
        gap: 2rem;
    }
    .doc-toc { display: none; }
}

@media (max-width: 760px) {
    .doc-layout {
        grid-template-columns: minmax(0, 1fr);
        gap: 1rem;
        padding: 3.5rem 1rem 2rem;
    }
    .sidebar-toggle { display: inline-block; }
    .doc-sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 78%;
        max-width: 320px;
        height: 100vh;
        max-height: none;
        background: var(--bg);
        border-right: 1px solid var(--border);
        padding: 3.25rem 1rem 1.5rem;
        transform: translateX(-100%);
        transition: transform 0.18s ease-out;
        z-index: 20;
    }
    .doc-sidebar.is-open { transform: translateX(0); }
    .doc-content h1 { font-size: 1.35rem; }
}

/* ── Code blocks + copy button ────────────────────────────────────────────── */
.doc-content div.sourceCode {
    margin: 0.85rem 0 1rem;
}

.doc-content pre,
.doc-content div.sourceCode pre {
    position: relative;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0.9rem 1rem;
    overflow-x: auto;
    margin: 0;
}

.doc-content pre code {
    background: transparent;
    padding: 0;
    font-size: 0.85rem;
    line-height: 1.55;
}

.doc-content pre.has-copy,
.doc-content div.sourceCode.has-copy {
    position: relative;
}

.copy-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.85rem;
    height: 1.85rem;
    padding: 0;
    margin: 0;
    background: var(--bg);
    color: var(--text-muted);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    line-height: 0;
    opacity: 0.55;
    transition: opacity 0.12s ease-out, color 0.12s, background 0.12s, border-color 0.12s, transform 0.08s;
    z-index: 2;
}

.copy-btn svg {
    display: block;
    pointer-events: none;
}

.doc-content pre:hover .copy-btn,
.doc-content div.sourceCode:hover .copy-btn,
.copy-btn:focus-visible {
    opacity: 1;
}

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

.copy-btn:active {
    transform: scale(0.94);
}

.copy-btn.is-copied {
    opacity: 1;
    color: var(--bg);
    background: var(--accent);
    border-color: var(--accent);
}

.copy-btn.is-error {
    opacity: 1;
    color: #b44;
    border-color: #b44;
}

/* Hide pandoc's per-line empty anchors (used for optional line numbering) */
.doc-content div.sourceCode pre code > span > a:first-child[aria-hidden="true"] {
    display: none;
}

/* ── Pandoc / skylighting syntax highlighting ─────────────────────────────── */
/* Class names follow pandoc's "sourceCode" emitter. */
.doc-content code span.co,   /* comment */
.doc-content code span.cn,   /* constant value */
.doc-content code span.do {  /* documentation */
    color: var(--text-muted);
    font-style: italic;
}

.doc-content code span.kw,   /* keyword */
.doc-content code span.cf {  /* control flow */
    color: var(--accent);
    font-weight: 600;
}

.doc-content code span.dt,   /* data type */
.doc-content code span.bu,   /* built-in */
.doc-content code span.im {  /* import */
    color: var(--accent);
    font-weight: 600;
}

.doc-content code span.st,   /* string */
.doc-content code span.ch,   /* char */
.doc-content code span.vs,   /* verbatim string */
.doc-content code span.ss {  /* special string */
    color: #6c2a4a;
}

.doc-content code span.dv,   /* decimal value */
.doc-content code span.bn,   /* base-n */
.doc-content code span.fl,   /* float */
.doc-content code span.sc {  /* special char */
    color: #6c2a4a;
}

.doc-content code span.fu,   /* function */
.doc-content code span.ex,   /* shell executable */
.doc-content code span.va {  /* variable */
    color: var(--text);
    font-weight: 600;
}

.doc-content code span.op,   /* operator */
.doc-content code span.at {  /* attribute */
    color: var(--text);
}

.doc-content code span.pp,   /* preprocessor */
.doc-content code span.ot {  /* other */
    color: var(--accent);
}

.doc-content code span.al,   /* alert */
.doc-content code span.er {  /* error */
    color: #b44;
    font-weight: 600;
}

.doc-content code span.wa { color: #8a5a00; }      /* warning */
.doc-content code span.an,                          /* annotation */
.doc-content code span.cv,                          /* comment var */
.doc-content code span.in { color: var(--text-muted); }  /* information */