/* JSON-RPC.NET documentation site. Plain CSS, no framework; light and dark follow the system. */

:root {
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --fg: #1f2328;
  --fg-muted: #59636e;
  --line: #d1d9e0;
  --accent: #0969da;
  --accent-soft: #ddf4ff;
  --code-bg: #f6f8fa;
  --mark: #fff8c5;
  --max: 78ch;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --bg-soft: #161b22;
    --fg: #e6edf3;
    --fg-muted: #9198a1;
    --line: #30363d;
    --accent: #4493f8;
    --accent-soft: #121d2f;
    --code-bg: #161b22;
    --mark: #3a2f00;
  }
}

* { box-sizing: border-box; }

html { scroll-padding-top: 4.5rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.6 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.skip {
  position: absolute; left: -999px; top: 0; padding: .5rem 1rem;
  background: var(--accent); color: #fff; z-index: 10;
}
.skip:focus { left: 1rem; }

/* Top bar */
.top {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 1.5rem;
  padding: 0 1.25rem; height: 3.25rem;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
}
.top .brand { font-weight: 600; color: var(--fg); font-size: 1.05rem; }
.top nav { display: flex; gap: 1.25rem; margin-left: auto; }
.top nav a { color: var(--fg-muted); }
.top nav a:hover { color: var(--fg); text-decoration: none; }

/* Three columns on wide screens: page list, content, on-page contents */
.layout {
  display: grid;
  grid-template-columns: 15rem minmax(0, var(--max)) 16rem;
  justify-content: center;
  gap: 3rem;
  padding: 2rem 1.25rem 4rem;
}

nav.pages, nav.toc {
  position: sticky; top: 4.25rem;
  align-self: start;
  max-height: calc(100vh - 5rem);
  overflow: auto;
  font-size: .9rem;
}
nav.pages a, nav.toc a { display: block; padding: .25rem .5rem; color: var(--fg-muted); border-left: 2px solid transparent; }
nav.pages a:hover, nav.toc a:hover { color: var(--fg); text-decoration: none; }
nav.pages a.current { color: var(--accent); border-left-color: var(--accent); background: var(--accent-soft); }
nav.pages .group { margin: 1rem 0 .25rem .5rem; font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--fg-muted); }
nav.toc .toc-title { margin: 0 0 .25rem .5rem; font-size: .75rem; text-transform: uppercase; letter-spacing: .04em; color: var(--fg-muted); }
nav.toc a.l3 { padding-left: 1.25rem; font-size: .85rem; }
nav.toc a.active { color: var(--accent); border-left-color: var(--accent); }

@media (max-width: 1180px) {
  .layout { grid-template-columns: 14rem minmax(0, 1fr); }
  nav.toc { display: none; }
}
@media (max-width: 800px) {
  .layout { display: block; padding: 1.25rem 1rem 3rem; }
  nav.pages { position: static; max-height: none; display: flex; flex-wrap: wrap; gap: .25rem; margin-bottom: 1.5rem; }
  nav.pages a { border: 1px solid var(--line); border-radius: 999px; padding: .2rem .7rem; }
  nav.pages a.current { border-color: var(--accent); }
  nav.pages .group { display: none; }
  .top { gap: 1rem; padding: 0 1rem; }
  .top nav { gap: .9rem; font-size: .9rem; }
}

/* Content */
main { min-width: 0; }
main > :first-child { margin-top: 0; }

h1, h2, h3, h4, h5, h6 { line-height: 1.25; font-weight: 600; scroll-margin-top: 4.5rem; }
h1 { font-size: 2rem; margin: 0 0 1rem; padding-bottom: .3em; border-bottom: 1px solid var(--line); }
h2 { font-size: 1.5rem; margin: 2.25rem 0 1rem; padding-bottom: .3em; border-bottom: 1px solid var(--line); }
h3 { font-size: 1.2rem; margin: 1.75rem 0 .75rem; }
h4 { font-size: 1rem; margin: 1.5rem 0 .5rem; }
h5, h6 { font-size: .9rem; margin: 1.25rem 0 .5rem; color: var(--fg-muted); }
.anchor { margin-left: .4em; color: var(--line); font-weight: 400; opacity: 0; }
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor, h4:hover .anchor, h5:hover .anchor, h6:hover .anchor { opacity: 1; }
.anchor:hover { color: var(--accent); text-decoration: none; }

p, ul, ol, table, pre, blockquote, picture { margin: 0 0 1rem; }
li { margin: .2rem 0; }
li > p { margin-bottom: .4rem; }
blockquote { border-left: 3px solid var(--line); color: var(--fg-muted); padding: 0 1rem; }
hr { border: 0; border-top: 1px solid var(--line); margin: 2rem 0; }
img { max-width: 100%; height: auto; }
picture { display: block; }

code, pre {
  font: .875em/1.5 ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}
code { background: var(--code-bg); border-radius: 4px; padding: .15em .35em; }
pre {
  background: var(--code-bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .9rem 1rem;
  overflow: auto;
  line-height: 1.45;
}
pre code { background: none; padding: 0; font-size: .875rem; }

table { border-collapse: collapse; width: 100%; display: block; overflow: auto; font-size: .95rem; }
th, td { border: 1px solid var(--line); padding: .4rem .75rem; text-align: left; vertical-align: top; }
th { background: var(--bg-soft); font-weight: 600; }
tr:nth-child(even) td { background: color-mix(in srgb, var(--bg-soft) 50%, var(--bg)); }
td code, th code { white-space: nowrap; }

mark { background: var(--mark); color: inherit; }

footer {
  border-top: 1px solid var(--line);
  color: var(--fg-muted);
  font-size: .85rem;
  padding: 1.5rem 1.25rem 2.5rem;
  text-align: center;
}