/* JBrowser Source Docs: three-column layout (navigation, page, "On this page"), in the spirit of
   Firefox Source Docs, plus the version switcher and search. */

:root { --docs-top: 60px; --side-w: 290px; --toc-w: 230px; }

body.docs { background: var(--bg); }
.docs-top {
  position: sticky; top: 0; z-index: 60; display: flex; align-items: center; gap: 14px; height: var(--docs-top);
  padding: 0 18px; background: var(--topbar-bg); border-bottom: 1px solid var(--border);
  backdrop-filter: saturate(1.6) blur(16px); -webkit-backdrop-filter: saturate(1.6) blur(16px);
}
.docs-top .brand { font-size: 17px; white-space: nowrap; }
.menu-toggle { display: none; }
.docs-links { display: flex; gap: 2px; margin-left: auto; }
.docs-links a { color: var(--text-2); padding: 6px 10px; border-radius: 8px; font-size: 14px; }
.docs-links a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }

/* ---------------------------------------------------------------- version switcher */
.version-switch { position: relative; }
.version-btn {
  display: inline-flex; align-items: center; gap: 4px; height: 32px; padding: 0 8px 0 12px; border-radius: 999px;
  border: 1px solid var(--border-2); background: var(--surface); color: var(--text); font: 600 13px var(--font); cursor: pointer;
}
.version-btn:hover { border-color: var(--accent); }
.version-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.version-btn .v-label::before { content: "v"; color: var(--text-3); font-weight: 500; }
body[data-version="main"] .version-btn .v-label::before { content: ""; }
.version-menu {
  position: absolute; top: calc(100% + 8px); left: 0; width: 290px; padding: 8px; z-index: 70;
  background: var(--surface); border: 1px solid var(--border-2); border-radius: 14px; box-shadow: var(--shadow-big);
}
.vm-title { margin: 6px 10px 8px; font-size: 12px; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .06em; }
.vm-list { list-style: none; margin: 0; padding: 0; }
.vm-list a {
  display: flex; align-items: center; gap: 8px; padding: 8px 10px; border-radius: 9px; color: var(--text); font-size: 14px;
}
.vm-list a:hover, .vm-list a:focus-visible { background: var(--surface-2); text-decoration: none; }
.vm-list a[aria-current="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.vm-list .vm-date { margin-left: auto; color: var(--text-3); font-size: 12px; }
.vm-list .vm-tag { font-size: 11px; font-weight: 700; padding: 1px 7px; border-radius: 999px; background: var(--accent-soft); color: var(--accent); }
.vm-list .vm-tag.dev { background: rgba(255, 159, 67, .16); color: var(--warn); }
.vm-list .vm-missing { color: var(--text-3); font-size: 12px; }
.vm-all { display: block; margin: 6px 4px 2px; padding: 8px 6px 4px; border-top: 1px solid var(--border); font-size: 13px; }

/* ---------------------------------------------------------------- search */
.search { position: relative; display: flex; align-items: center; flex: 0 1 360px; margin-left: 8px; }
.search > svg { position: absolute; left: 11px; width: 17px; height: 17px; fill: none; stroke: var(--text-3); stroke-width: 1.8; stroke-linecap: round; pointer-events: none; }
.search input {
  width: 100%; height: 36px; padding: 0 34px 0 36px; border-radius: 10px; border: 1px solid var(--border-2);
  background: var(--surface); color: var(--text); font: 14px var(--font);
}
.search input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.search input::-webkit-search-cancel-button { display: none; }
.search-key { position: absolute; right: 8px; }
.search-results {
  position: absolute; top: calc(100% + 8px); left: 0; width: min(560px, 92vw); max-height: 70vh; overflow: auto; padding: 6px;
  background: var(--surface); border: 1px solid var(--border-2); border-radius: 14px; box-shadow: var(--shadow-big); z-index: 70;
}
.search-results a { display: block; padding: 9px 12px; border-radius: 9px; color: var(--text); }
.search-results a:hover, .search-results a.on { background: var(--accent-soft); text-decoration: none; }
.search-results .r-title { font-weight: 600; }
.search-results .r-section { color: var(--text-3); font-size: 12px; margin-left: 6px; }
.search-results .r-text { display: block; color: var(--text-2); font-size: 13px; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.search-results mark { background: rgba(255, 200, 0, .3); color: inherit; border-radius: 3px; padding: 0 1px; }
.search-results .r-empty { padding: 14px; color: var(--text-3); }

/* ---------------------------------------------------------------- layout */
.docs-layout {
  display: grid; grid-template-columns: var(--side-w) minmax(0, 1fr) var(--toc-w);
  max-width: 1500px; margin: 0 auto; align-items: start;
}
.sidebar {
  position: sticky; top: var(--docs-top); height: calc(100vh - var(--docs-top)); overflow-y: auto;
  padding: 22px 14px 40px 22px; border-right: 1px solid var(--border); scrollbar-width: thin;
}
.nav-section { margin-bottom: 18px; }
.nav-title { margin: 0 0 6px 10px; font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); }
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar a {
  display: block; padding: 5px 10px; border-radius: 8px; color: var(--text-2); font-size: 14.5px; line-height: 1.4;
}
.sidebar a:hover { background: var(--surface-2); color: var(--text); text-decoration: none; }
.sidebar a.active { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.api-tree { margin: 4px 0 6px 10px !important; padding-left: 8px !important; border-left: 1px solid var(--border); }
.api-tree .pkg > span { display: block; margin: 8px 0 2px 10px; font: 600 12px var(--mono); color: var(--text-3); }
.api-tree a { font-family: var(--mono); font-size: 13px; padding: 3px 10px; }

.docs-main { min-width: 0; padding: 26px 56px 60px; }
.page-toc {
  position: sticky; top: var(--docs-top); max-height: calc(100vh - var(--docs-top)); overflow-y: auto;
  padding: 30px 18px 40px 8px; font-size: 13.5px;
}
.page-toc > p { margin: 0 0 8px; font-weight: 700; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--text-3); }
.page-toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--border); }
.page-toc ul ul { border: 0; padding-left: 12px; }
.page-toc a { display: block; padding: 3px 0 3px 12px; margin-left: -1px; border-left: 2px solid transparent; color: var(--text-3); line-height: 1.4; }
.page-toc a:hover { color: var(--text); text-decoration: none; }
.page-toc a.on { color: var(--accent); border-left-color: var(--accent); }
.page-toc:not(:has(li)) { visibility: hidden; }

.crumbs { font-size: 13px; color: var(--text-3); margin-bottom: 6px; }
.crumbs a { color: var(--text-3); }
.version-banner {
  display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; margin: 0 0 20px; padding: 12px 16px; border-radius: 12px;
  font-size: 14px; border: 1px solid var(--border);
}
.version-banner.old { background: rgba(255, 159, 67, .1); border-color: rgba(255, 159, 67, .35); }
.version-banner.dev { background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 35%, transparent); }
.version-banner > span { flex: 1 1 320px; }
.version-banner a { font-weight: 600; margin-left: auto; }
.generated-note {
  display: inline-flex; gap: 6px; align-items: center; margin: -6px 0 18px; padding: 3px 10px; border-radius: 999px;
  background: var(--surface-2); color: var(--text-3); font-size: 12.5px;
}

/* ---------------------------------------------------------------- prose */
.prose { max-width: 820px; font-size: 16px; line-height: 1.7; }
.prose h1 { font-size: 38px; margin: 6px 0 20px; letter-spacing: -.02em; }
.prose h2 { font-size: 25px; margin: 44px 0 12px; padding-top: 6px; }
.prose h3 { font-size: 19px; margin: 30px 0 8px; }
.prose h4 { font-size: 16px; margin: 22px 0 6px; }
.prose h2, .prose h3, .prose h4 { position: relative; scroll-margin-top: calc(var(--docs-top) + 18px); }
.prose .anchor { margin-left: 8px; color: var(--text-3); opacity: 0; font-weight: 400; text-decoration: none; }
.prose :is(h2, h3, h4):hover .anchor { opacity: 1; }
.prose p, .prose ul, .prose ol, .prose dl { margin: 0 0 14px; }
.prose ul, .prose ol { padding-left: 24px; }
.prose li { margin: 4px 0; }
.prose li > p { margin: 0 0 6px; }
.prose strong { color: var(--text); }
.prose hr { border: 0; border-top: 1px solid var(--border); margin: 36px 0; }
.prose blockquote { margin: 0 0 16px; padding: 4px 18px; border-left: 3px solid var(--accent); color: var(--text-2); }
.prose img { border-radius: 10px; }
.prose dt { font-weight: 600; }
.prose dd { margin: 0 0 10px 20px; color: var(--text-2); }

.prose pre, .prose .highlight pre {
  margin: 0 0 16px; padding: 14px 16px; overflow-x: auto; border-radius: 11px; line-height: 1.55;
  background: var(--code-bg); border: 1px solid var(--border); font-size: 13.5px;
}
.prose .highlight { position: relative; background: none !important; }
.prose pre code { background: none; padding: 0; font-size: inherit; color: var(--code-text); }
.code-copy-btn {
  position: absolute; top: 8px; right: 8px; opacity: 0; border: 1px solid var(--border-2); background: var(--surface);
  color: var(--text-2); border-radius: 7px; font: 600 12px var(--font); padding: 4px 9px; cursor: pointer; transition: opacity .15s;
}
.prose .highlight:hover .code-copy-btn, .code-copy-btn:focus-visible { opacity: 1; }
.code-copy-btn.done { color: var(--good); opacity: 1; }

.table-wrap { overflow-x: auto; margin: 0 0 18px; border: 1px solid var(--border); border-radius: 11px; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; line-height: 1.5; }
.prose th { text-align: left; font-weight: 600; background: var(--surface-2); }
.prose th, .prose td { padding: 9px 13px; border-bottom: 1px solid var(--border); vertical-align: top; }
.prose tr:last-child td { border-bottom: 0; }
.prose td code { white-space: nowrap; }
.prose td:first-child { white-space: nowrap; }

/* admonitions (!!! note, !!! warning, !!! tip, !!! danger) */
.admonition { margin: 0 0 18px; padding: 12px 16px 4px; border-radius: 11px; border: 1px solid var(--border); border-left: 4px solid var(--accent); background: var(--surface); }
.admonition-title { margin: 0 0 6px !important; font-weight: 700; }
.admonition.tip, .admonition.hint { border-left-color: var(--good); }
.admonition.warning, .admonition.caution, .admonition.important { border-left-color: var(--warn); }
.admonition.danger, .admonition.error { border-left-color: var(--bad); }

/* cards on the docs home page */
.card-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin: 18px 0 26px; }
.card-grid a {
  display: block; padding: 16px 18px; border-radius: 13px; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); box-shadow: var(--shadow); transition: transform .2s var(--ease), border-color .2s;
}
.card-grid a:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--accent); }
.card-grid strong { display: block; margin-bottom: 2px; }
.card-grid span { color: var(--text-2); font-size: 14px; line-height: 1.5; }

/* the Python API pages */
.api-meta { color: var(--text-3); font-size: 14px; margin-top: -8px !important; }
.prose pre.sig {
  display: flex; align-items: baseline; gap: 12px; padding: 10px 14px; background: var(--surface-2);
  border-left: 3px solid var(--accent); font-size: 13.5px; white-space: pre-wrap;
}
.prose pre.sig code { flex: 1; }
.prose pre.sig b { color: var(--accent); }
.prose pre.sig .k { color: var(--text-3); font-style: italic; }
.prose pre.sig .src { font-family: var(--font); font-size: 12px; white-space: nowrap; }
.prose pre.sig.ctor { border-left-color: var(--border-2); }
.api-label { font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-3); margin-top: 18px !important; }
.api-overrides { color: var(--text-3); font-size: 14px; }

/* ---------------------------------------------------------------- page footer */
.page-foot { max-width: 820px; margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--border); }
.page-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--text-3); }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 22px; }
.pager a {
  display: flex; flex-direction: column; gap: 2px; padding: 14px 16px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); font-weight: 600;
}
.pager a:hover { border-color: var(--accent); text-decoration: none; }
.pager a span { font-size: 12px; font-weight: 500; color: var(--text-3); }
.pager .next { grid-column: 2; text-align: right; }

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1260px) {
  .docs-layout { grid-template-columns: var(--side-w) minmax(0, 1fr); }
  .page-toc { display: none; }
  .docs-links { display: none; }
  .docs-top .theme-toggle { margin-left: auto; }
}
@media (max-width: 900px) {
  :root { --side-w: 300px; }
  .docs-layout { grid-template-columns: minmax(0, 1fr); }
  .menu-toggle { display: inline-grid; }
  .sidebar {
    position: fixed; left: 0; top: var(--docs-top); z-index: 55; width: min(var(--side-w), 86vw); background: var(--bg);
    transform: translateX(-102%); transition: transform .25s var(--ease); box-shadow: var(--shadow-big);
  }
  body.nav-open .sidebar { transform: none; }
  .sidebar-scrim { position: fixed; inset: var(--docs-top) 0 0; z-index: 54; background: rgba(0, 0, 0, .35); }
  .docs-main { padding: 20px 20px 48px; }
  .docs-top .brand em { display: none; }
  .search { flex: 1; }
  .search-key { display: none; }
  .card-grid { grid-template-columns: 1fr; }
  .prose h1 { font-size: 30px; }
}
@media (max-width: 560px) {
  .docs-top { gap: 8px; padding: 0 10px; }
  .docs-top .brand span { display: none; }
  .pager { grid-template-columns: 1fr; }
  .pager .next { grid-column: 1; }
}