/* RedisNearCache documentation site.
   Three columns: fixed navigation, prose, dark code rail.
   Light by default, dark when the viewer asks for it. The code rail is always dark. */

:root {
  color-scheme: light;

  --nav-col: 264px;
  --code-col: 480px;
  --rail-gap: 48px;
  --main-pad: 40px;
  --topbar-h: 56px;

  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --ink: #1b2431;
  --ink-strong: #0d1421;
  --muted: #5b6b7f;
  --faint: #7c8899;
  --rule: #e2e7ee;
  --rule-strong: #d3d9e1;
  --panel: #ffffff;
  --accent: #0f6f63;
  --accent-soft: #e6f2f0;
  --inline-code-bg: #eef1f5;
  --inline-code-ink: #1f3d55;

  /* diagram palette, shared with docs/how-it-works.html */
  --crimson: #c0392b;
  --teal: #1f7a6d;
  --slate: #3e5470;

  /* always dark */
  --rail-bg: #1a1f36;
  --rail-rule: #2b3150;
  --code-bg: #12162b;
  --code-ink: #d7dcec;
  --code-muted: #8792a8;
  --code-head: #1e2440;

  --tok-comment: #7d879c;
  --tok-string: #8fd6a9;
  --tok-keyword: #86b4ff;
  --tok-type: #6fd3c2;
  --tok-number: #f2b880;
  --tok-punct: #aab3cc;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #11151c;
    --bg-soft: #171c25;
    --ink: #e6e9ee;
    --ink-strong: #f2f5f9;
    --muted: #9aa7b6;
    --faint: #7f8c9d;
    --rule: #262e3a;
    --rule-strong: #2f3945;
    --panel: #1a2029;
    --accent: #4fb8a6;
    --accent-soft: #1c2c2e;
    --inline-code-bg: #222a35;
    --inline-code-ink: #cfe3df;

    --crimson: #e2604f;
    --teal: #4fb8a6;
    --slate: #8fa6c2;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Inter", "Source Sans 3", "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
a:focus-visible,
button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

code, pre, kbd { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.prose code {
  background: var(--inline-code-bg);
  color: var(--inline-code-ink);
  font-size: 0.84em;
  padding: 1px 5px;
  border-radius: 3px;
}

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--bg);
  color: var(--ink);
  padding: 10px 16px;
  z-index: 60;
}
.skip:focus { left: 8px; top: 8px; border: 1px solid var(--rule-strong); border-radius: 4px; }

/* ---------- top bar ---------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  gap: 12px;
  height: var(--topbar-h);
  padding: 0 20px;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}
.topbar img { width: 26px; height: 26px; display: block; }
.topbar .title { font-weight: 600; color: var(--ink-strong); letter-spacing: -0.01em; }
.topbar .sub {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-left: 1px solid var(--rule-strong);
  padding-left: 12px;
}
.topbar .spacer { flex: 1; }
.topbar .toplink { color: var(--muted); font-size: 13px; }

/* ---------- layout ---------- */

.layout {
  display: grid;
  grid-template-columns: var(--nav-col) minmax(0, 1fr);
  align-items: start;
}

.codeband {
  position: fixed;
  top: var(--topbar-h);
  right: 0;
  bottom: 0;
  width: calc(var(--code-col) + var(--main-pad));
  background: var(--rail-bg);
  border-left: 1px solid var(--rail-rule);
  z-index: 0;
  pointer-events: none;
}

/* ---------- navigation ---------- */

.sidebar {
  position: sticky;
  top: var(--topbar-h);
  max-height: calc(100vh - var(--topbar-h));
  overflow-y: auto;
  padding: 26px 16px 80px 20px;
  border-right: 1px solid var(--rule);
  background: var(--bg);
  z-index: 10;
}
.nav-group { margin-bottom: 22px; }
.nav-label {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
  margin: 0 0 8px 10px;
}
.sidebar ul { list-style: none; margin: 0; padding: 0; }
.sidebar li { margin: 0; }
.sidebar a {
  display: block;
  padding: 5px 10px;
  border-radius: 5px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.35;
}
.sidebar a:hover { background: var(--bg-soft); color: var(--ink); text-decoration: none; }
.sidebar a.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}
.sidebar .sub-nav { margin: 2px 0 6px 10px; border-left: 1px solid var(--rule); }
.sidebar .sub-nav a { font-size: 13px; padding-left: 12px; }

/* ---------- main ---------- */

.main {
  position: relative;
  z-index: 1;
  padding: 0 var(--main-pad) 140px;
  min-width: 0;
}

.section { scroll-margin-top: calc(var(--topbar-h) + 8px); }
.section > .row:first-child > .prose { padding-top: 44px; }
.section + .section > .row:first-child > .prose { border-top: 1px solid var(--rule); margin-top: 44px; }

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--code-col);
  gap: var(--rail-gap);
  align-items: start;
}

.prose { min-width: 0; padding: 0 8px 20px 0; max-width: 72ch; }
.rail { min-width: 0; padding: 0 0 20px; }
.rail:empty { padding: 0; }

h1, h2, h3, h4 { color: var(--ink-strong); line-height: 1.25; text-wrap: balance; }
h1 { font-size: 30px; font-weight: 650; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 22px; font-weight: 650; letter-spacing: -0.015em; margin: 0 0 10px; }
h3 { font-size: 16px; font-weight: 650; margin: 26px 0 8px; scroll-margin-top: calc(var(--topbar-h) + 8px); }
h4 { font-size: 14px; font-weight: 650; margin: 20px 0 6px; }
.section h2 { scroll-margin-top: calc(var(--topbar-h) + 8px); }

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 6px;
}
.lede { font-size: 17px; color: var(--muted); }

p { margin: 0 0 14px; }
ul, ol { margin: 0 0 14px; padding-left: 20px; }
li { margin: 0 0 6px; }
strong { font-weight: 650; color: var(--ink-strong); }

.anchor {
  color: var(--faint);
  opacity: 0;
  margin-left: 8px;
  font-weight: 400;
  font-size: 0.8em;
  text-decoration: none;
}
h2:hover .anchor, h3:hover .anchor, h4:hover .anchor, .anchor:focus { opacity: 1; }

.note {
  border-left: 3px solid var(--accent);
  background: var(--bg-soft);
  padding: 12px 16px;
  border-radius: 0 5px 5px 0;
  margin: 0 0 16px;
}
.note p:last-child { margin-bottom: 0; }

/* ---------- tables ---------- */

.table-wrap { overflow-x: auto; margin: 0 0 18px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 9px 12px 9px 0; border-bottom: 1px solid var(--rule); vertical-align: top; }
th {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 500;
  border-bottom: 1px solid var(--rule-strong);
  white-space: nowrap;
}
td.num { text-align: right; font-variant-numeric: tabular-nums; }
th.num { text-align: right; }
tbody tr:last-child td { border-bottom: none; }

/* ---------- API entries ---------- */

.member { margin-top: 30px; }
.member h3 { margin-top: 0; }
.member .sig-inline {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 12.5px;
  color: var(--muted);
  margin: 0 0 10px;
  word-break: break-word;
}
.pill {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faint);
  border: 1px solid var(--rule-strong);
  border-radius: 3px;
  padding: 1px 6px;
  vertical-align: middle;
  margin-left: 8px;
}
.returns {
  font-size: 14px;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  padding-top: 10px;
}
.returns strong { color: var(--ink-strong); }

/* ---------- figures ---------- */

figure { margin: 0 0 22px; }
.diagram {
  background: var(--panel);
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  padding: 16px;
  overflow-x: auto;
}
.diagram svg { max-width: 100%; height: auto; display: block; color: var(--ink); }
pre.mermaid { background: transparent; margin: 0; font-size: 13px; line-height: 1.4; color: var(--muted); }
figcaption { font-size: 13.5px; color: var(--muted); margin-top: 10px; }
.key { display: flex; gap: 20px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin: 8px 0 0; }
.key span::before { content: ""; display: inline-block; width: 20px; height: 3px; margin-right: 8px; vertical-align: middle; }
.key .k-inv::before { background: var(--crimson); }
.key .k-hit::before { background: var(--teal); }
.key .k-plain::before { background: var(--ink); opacity: 0.7; }

/* ---------- code rail ---------- */

.codeblock {
  background: var(--code-bg);
  border: 1px solid var(--rail-rule);
  border-radius: 7px;
  margin: 0 0 16px;
  overflow: hidden;
}
.codeblock .cb-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px 7px 12px;
  background: var(--code-head);
  border-bottom: 1px solid var(--rail-rule);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--code-muted);
}
.cb-head .cb-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cb-head .cb-lang { opacity: 0.75; }
.copy {
  font-family: inherit;
  font-size: 10.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--code-muted);
  background: transparent;
  border: 1px solid var(--rail-rule);
  border-radius: 4px;
  padding: 2px 8px;
  cursor: pointer;
}
.copy:hover { color: #ffffff; border-color: #4a5480; }
.codeblock pre {
  margin: 0;
  padding: 13px 14px;
  overflow-x: auto;
  color: var(--code-ink);
  font-size: 12.5px;
  line-height: 1.62;
  tab-size: 2;
}
.codeblock pre code { background: none; padding: 0; color: inherit; white-space: pre; }

.tok-comment { color: var(--tok-comment); font-style: italic; }
.tok-string { color: var(--tok-string); }
.tok-keyword { color: var(--tok-keyword); }
.tok-type { color: var(--tok-type); }
.tok-number { color: var(--tok-number); }
.tok-punct { color: var(--tok-punct); }

.rail-note {
  color: var(--code-muted);
  font-size: 12.5px;
  line-height: 1.6;
  margin: -6px 0 16px;
  padding: 0 2px;
}
.rail-note code { color: var(--code-ink); font-size: 0.92em; }

/* ---------- footer ---------- */

.site-foot {
  border-top: 1px solid var(--rule);
  margin-top: 48px;
  padding-top: 20px;
  color: var(--muted);
  font-size: 13.5px;
  max-width: 72ch;
}

/* ---------- responsive ---------- */

@media (max-width: 1400px) {
  :root { --code-col: 420px; --rail-gap: 36px; }
}

@media (max-width: 1180px) {
  :root { --nav-col: 224px; --code-col: 350px; --rail-gap: 28px; --main-pad: 28px; }
  .codeblock pre { font-size: 12px; }
}

@media (max-width: 900px) {
  :root { --nav-col: 0px; --code-col: 0px; }
  .codeband { display: none; }
  .layout { display: block; }
  .sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    border-right: none;
    border-bottom: 1px solid var(--rule);
    padding: 18px 20px 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 0 28px;
  }
  .nav-group { margin-bottom: 12px; }
  .sidebar .sub-nav { display: none; }
  .main { padding: 0 20px 80px; }
  .row { display: block; }
  .prose { max-width: none; padding-right: 0; }
  .rail { padding-bottom: 4px; }
  .section > .row:first-child > .prose { padding-top: 30px; }
  .section + .section > .row:first-child > .prose { margin-top: 30px; }
  body { font-size: 15.5px; }
}

@media print {
  .sidebar, .codeband, .topbar, .copy { display: none; }
  .row { display: block; }
}