/* FREAK V3 documentation — dependency-free stylesheet */

:root {
  --bg: #ffffff;
  --bg-alt: #f7f7fa;
  --bg-code: #f5f4f8;
  --bg-elev: #ffffff;
  --fg: #1b1b22;
  --fg-dim: #5a5a68;
  --fg-faint: #83838f;
  --border: #e3e3ea;
  --border-strong: #cfcfda;
  --accent: #c2317a;
  --accent-2: #7b3fd4;
  --accent-soft: #fdeef6;
  --ok: #1a7f4b;
  --ok-soft: #e6f5ec;
  --bad: #b3261e;
  --bad-soft: #fbeceb;
  --warn: #8a5a00;
  --warn-soft: #fdf3e0;
  --v4: #4a4ad0;
  --v4-soft: #ececfb;
  --sel: #fbe3ef;

  --c-kw: #b3186d;
  --c-str: #1d7a4d;
  --c-num: #a04a00;
  --c-com: #7b7b8a;
  --c-type: #6a34c4;
  --c-fn: #1c5fbe;
  --c-op: #4a4a58;
  --c-attr: #a04a00;
  --c-interp: #b3186d;

  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Inter, Roboto, sans-serif;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131318;
    --bg-alt: #1a1a21;
    --bg-code: #1c1c24;
    --bg-elev: #1e1e27;
    --fg: #e6e6ee;
    --fg-dim: #a8a8b8;
    --fg-faint: #82828f;
    --border: #2c2c37;
    --border-strong: #3d3d4b;
    --accent: #ff6fb2;
    --accent-2: #b48cff;
    --accent-soft: #2a1c26;
    --ok: #5fd39a;
    --ok-soft: #14261d;
    --bad: #ff8a80;
    --bad-soft: #2a1917;
    --warn: #e8b45c;
    --warn-soft: #29210f;
    --v4: #9b9bff;
    --v4-soft: #1b1b2e;
    --sel: #3a2130;

    --c-kw: #ff79c6;
    --c-str: #7ee2a8;
    --c-num: #ffb86c;
    --c-com: #7a7a8c;
    --c-type: #c8a6ff;
    --c-fn: #79b8ff;
    --c-op: #b9b9c8;
    --c-attr: #ffb86c;
    --c-interp: #ff79c6;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-text-size-adjust: 100%;
}

::selection { background: var(--sel); }

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

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 8px; top: 8px; }

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

.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.menu-toggle {
  display: none;
  background: none; border: 1px solid var(--border-strong);
  color: var(--fg); border-radius: 8px;
  font-size: 16px; padding: 6px 10px; cursor: pointer;
}

.brand { display: flex; align-items: baseline; gap: 8px; flex: none; }
.brand:hover { text-decoration: none; }
.brand-mark {
  font-weight: 800; letter-spacing: 0.5px; font-size: 19px;
  background: linear-gradient(92deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.brand-sub { color: var(--fg-faint); font-size: 12px; letter-spacing: 0.6px; text-transform: uppercase; }

.compiler-tag {
  flex: none; font-family: var(--mono); font-size: 11.5px;
  color: var(--fg-dim); border: 1px solid var(--border);
  padding: 3px 9px; border-radius: 999px; background: var(--bg-alt);
  white-space: nowrap;
}

/* ---------------- search ---------------- */

.searchbox { position: relative; flex: 1; max-width: 560px; margin: 0 auto; }

#q {
  width: 100%; padding: 9px 14px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: var(--bg-alt); color: var(--fg);
  font-family: var(--sans); font-size: 14px; outline: none;
}
#q:focus { border-color: var(--accent); background: var(--bg); box-shadow: 0 0 0 3px var(--accent-soft); }

.results {
  position: absolute; top: calc(100% + 8px); left: 0; right: 0;
  max-height: min(70vh, 560px); overflow-y: auto;
  background: var(--bg-elev); border: 1px solid var(--border-strong);
  border-radius: var(--radius); box-shadow: 0 18px 44px rgba(0,0,0,0.22);
  padding: 6px; z-index: 60;
}
.results .hit { display: block; padding: 9px 12px; border-radius: 7px; color: var(--fg); }
.results .hit:hover, .results .hit.sel { background: var(--bg-alt); text-decoration: none; }
.results .hit.sel { outline: 2px solid var(--accent); outline-offset: -2px; }
.hit-top { display: flex; gap: 8px; align-items: baseline; }
.hit-page { font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; color: var(--accent); font-weight: 700; }
.hit-head { font-weight: 600; font-size: 14px; }
.hit-snip { font-size: 12.5px; color: var(--fg-dim); margin-top: 2px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.hit-snip mark, .hit-head mark { background: var(--sel); color: inherit; padding: 0 1px; border-radius: 2px; }
.results .empty { padding: 16px; color: var(--fg-dim); font-size: 14px; text-align: center; }
.results .foot { padding: 8px 12px; border-top: 1px solid var(--border); color: var(--fg-faint); font-size: 11.5px; }

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

.layout {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr) 220px;
  gap: 36px;
  max-width: 1400px; margin: 0 auto; padding: 0 24px;
  align-items: start;
}

.sidebar {
  position: sticky; top: 62px;
  max-height: calc(100vh - 70px); overflow-y: auto;
  padding: 26px 0 40px;
}
.nav-group { margin-bottom: 22px; }
.nav-group-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.9px; color: var(--fg-faint); margin-bottom: 8px; padding-left: 10px;
}
.sidebar-nav ul { list-style: none; margin: 0; padding: 0; }
.sidebar-nav a {
  display: block; padding: 5px 10px; border-radius: 7px;
  color: var(--fg-dim); font-size: 14px; border-left: 2px solid transparent;
}
.sidebar-nav a:hover { background: var(--bg-alt); color: var(--fg); text-decoration: none; }
.sidebar-nav a.active {
  color: var(--accent); font-weight: 600;
  background: var(--accent-soft); border-left-color: var(--accent);
}

main { min-width: 0; padding: 26px 0 72px; }

.toc {
  position: sticky; top: 62px;
  max-height: calc(100vh - 70px); overflow-y: auto;
  padding: 30px 0 40px; font-size: 13px;
}
.toc-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.9px; color: var(--fg-faint); margin-bottom: 8px;
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc a { display: block; padding: 3px 0 3px 10px; color: var(--fg-dim); border-left: 2px solid var(--border); }
.toc a:hover { color: var(--accent); border-left-color: var(--accent); text-decoration: none; }

/* ---------------- prose ---------------- */

.prose { max-width: 78ch; }
.prose h1 { font-size: 2.1rem; line-height: 1.2; margin: 0 0 12px; letter-spacing: -0.02em; }
.prose h2 {
  font-size: 1.42rem; margin: 46px 0 12px; padding-bottom: 7px;
  border-bottom: 1px solid var(--border); letter-spacing: -0.01em;
}
.prose h3 { font-size: 1.13rem; margin: 30px 0 8px; }
.prose h4 { font-size: 1rem; margin: 22px 0 6px; color: var(--fg-dim); }
.prose p { margin: 12px 0; }
.prose ul, .prose ol { margin: 12px 0; padding-left: 24px; }
.prose li { margin: 5px 0; }
.prose > p:first-of-type { font-size: 1.06rem; color: var(--fg-dim); }

.anchor {
  opacity: 0; margin-left: 8px; color: var(--fg-faint);
  font-weight: 400; text-decoration: none; font-size: 0.8em;
}
h1:hover .anchor, h2:hover .anchor, h3:hover .anchor { opacity: 1; }

code {
  font-family: var(--mono); font-size: 0.875em;
  background: var(--bg-code); border: 1px solid var(--border);
  padding: 1px 5px; border-radius: 5px; word-break: break-word;
}

pre.code, pre.stdout {
  font-family: var(--mono); font-size: 13.2px; line-height: 1.62;
  background: var(--bg-code); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px;
  overflow-x: auto; margin: 0;
}
pre code { background: none; border: none; padding: 0; font-size: inherit; }

.codeblock { position: relative; margin: 16px 0; }
.code-lang {
  position: absolute; top: 8px; right: 12px;
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.6px;
  text-transform: uppercase; color: var(--fg-faint); pointer-events: none;
}

/* syntax colors */
.c-kw { color: var(--c-kw); font-weight: 600; }
.c-str { color: var(--c-str); }
.c-num { color: var(--c-num); }
.c-com { color: var(--c-com); font-style: italic; }
.c-type { color: var(--c-type); }
.c-fn { color: var(--c-fn); }
.c-op { color: var(--c-op); }
.c-attr { color: var(--c-attr); }
.c-interp { color: var(--c-interp); font-weight: 600; }

/* ---------------- example cards ---------------- */

.example {
  margin: 20px 0; border: 1px solid var(--border-strong);
  border-radius: var(--radius); overflow: hidden; background: var(--bg-elev);
}
.example figcaption {
  display: flex; justify-content: space-between; align-items: center;
  gap: 12px; flex-wrap: wrap;
  padding: 8px 14px; background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.ex-name { font-family: var(--mono); font-size: 12px; color: var(--fg-dim); }
.ex-badges { display: flex; gap: 6px; }
.example pre.code { border: none; border-radius: 0; background: var(--bg-code); }

.badge {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.5px;
  text-transform: uppercase; padding: 2px 8px; border-radius: 999px;
  border: 1px solid transparent; white-space: nowrap;
}
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 30%, transparent); }
.badge.bad { background: var(--bad-soft); color: var(--bad); border-color: color-mix(in srgb, var(--bad) 30%, transparent); }

.ex-out { border-top: 1px solid var(--border); }
.ex-out-head {
  font-size: 10.5px; font-weight: 700; letter-spacing: 0.7px; text-transform: uppercase;
  color: var(--fg-faint); padding: 7px 14px 0;
}
pre.stdout {
  border: none; border-radius: 0; background: transparent;
  color: var(--fg-dim); padding: 6px 14px 14px;
}
pre.stdout.err { color: var(--bad); }

/* ---------------- callouts ---------------- */

.callout {
  margin: 18px 0; padding: 12px 16px;
  border-left: 3px solid var(--border-strong);
  border-radius: 0 var(--radius) var(--radius) 0; background: var(--bg-alt);
}
.callout p { margin: 0; }
.callout-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.7px; margin-bottom: 4px;
}
.callout.note { border-left-color: var(--accent-2); background: var(--v4-soft); }
.callout.note .callout-title { color: var(--accent-2); }
.callout.tip { border-left-color: var(--ok); background: var(--ok-soft); }
.callout.tip .callout-title { color: var(--ok); }
.callout.warn { border-left-color: var(--warn); background: var(--warn-soft); }
.callout.warn .callout-title { color: var(--warn); }
.callout.v4 { border-left-color: var(--v4); background: var(--v4-soft); }
.callout.v4 .callout-title { color: var(--v4); }

/* ---------------- summary card ---------------- */

.summary-card {
  display: flex; align-items: center; gap: 20px;
  margin: 22px 0; padding: 18px 22px;
  border: 1px solid var(--border-strong); border-radius: var(--radius);
  background: linear-gradient(100deg, var(--accent-soft), var(--bg-alt));
}
.sc-num {
  font-size: 2rem; font-weight: 800; line-height: 1; white-space: nowrap;
  background: linear-gradient(92deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.sc-body { display: flex; flex-direction: column; gap: 3px; font-size: 13.5px; }
.sc-body span { color: var(--fg-dim); }

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

.tablewrap { overflow-x: auto; margin: 18px 0; border: 1px solid var(--border); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 13.6px; }
th, td { text-align: left; padding: 9px 13px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { background: var(--bg-alt); font-weight: 700; font-size: 12.5px; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
td code, th code { white-space: nowrap; }

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

.pagefoot {
  margin-top: 56px; padding-top: 18px; border-top: 1px solid var(--border);
  color: var(--fg-faint); font-size: 12.5px; max-width: 78ch;
}

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

@media (max-width: 1180px) {
  .layout { grid-template-columns: 236px minmax(0, 1fr); }
  .toc { display: none; }
}

@media (max-width: 860px) {
  .layout { grid-template-columns: minmax(0, 1fr); padding: 0 16px; }
  .menu-toggle { display: block; }
  .compiler-tag { display: none; }
  .sidebar {
    display: none; position: static; max-height: none;
    padding: 14px 0; border-bottom: 1px solid var(--border);
  }
  .sidebar.open { display: block; }
  .topbar { gap: 10px; padding: 10px 14px; }
  .brand-sub { display: none; }
  .prose h1 { font-size: 1.7rem; }
}

/* Terminal-style output block, used when an example emits ANSI colour.
   Painted on a dark ground in both themes so the escapes read as a terminal. */
pre.stdout.term {
  background: #16161d;
  color: #d7d7e0;
  border-top: 1px solid var(--border);
  padding: 12px 14px;
}
:root:not([data-theme="dark"]) pre.stdout.term { color: #d7d7e0; }