/* Silvector docs · Carbon Signal: carbon ground, uppercase condensed display, signal-blue kickers, hairline rules. */

@font-face {
  font-family: "Barlow Condensed";
  font-style: normal;
  font-weight: 500;
  font-display: optional;
  src: url("/fonts/barlow-condensed-latin-500-normal.woff2") format("woff2");
}
@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: optional;
  src: url("/fonts/IBMPlexMono-Regular.woff2") format("woff2");
}

:root {
  color-scheme: dark;
  --bg: #0b0c0e;
  --bg-raised: #131518;
  --bg-sunk: #07080a;
  --line: #262a30;
  --line-strong: #3a3f47;
  --ink: #eceef1;
  --ink-2: #b9bfc7;
  --muted: #959ca6;
  --signal: #6cb4ff;
  --signal-ink: #0b0c0e;
  --allow: #4cc38a;
  --step: #f0b429;
  --deny: #ff7a7a;
  --unknown: #a3a9b1;
  --gold: #d9b64a;
  --focus: #9ccfff;
  --display: "Barlow Condensed", "Arial Narrow", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --body: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --header: 56px;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f7f7f5;
  --bg-raised: #ffffff;
  --bg-sunk: #eeefec;
  --line: #d8dbde;
  --line-strong: #b9bec4;
  --ink: #0d0f12;
  --ink-2: #353b43;
  --muted: #565d66;
  --signal: #0a58b8;
  --signal-ink: #ffffff;
  --allow: #146c3f;
  --step: #7f5200;
  --deny: #b42318;
  --unknown: #565d66;
  --gold: #7a6000;
  --focus: #0a58b8;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--header) + 16px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 var(--body);
  text-rendering: optimizeLegibility;
}
a { color: var(--signal); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; border-radius: 2px; }
img { max-width: 100%; height: auto; }
code, pre, kbd, samp { font-family: var(--mono); font-size: 0.9em; }
:not(pre) > code {
  background: var(--bg-raised);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0.05em 0.35em;
  overflow-wrap: anywhere;
}

.skip {
  position: absolute; left: 12px; top: -48px; z-index: 50;
  background: var(--signal); color: var(--signal-ink); padding: 8px 12px; font-weight: 700;
}
.skip:focus { top: 12px; }

/* Header */
.top {
  position: sticky; top: 0; z-index: 20;
  height: var(--header);
  display: flex; align-items: center; gap: 20px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: 10px; color: var(--ink); text-decoration: none; }
.brand-word { font-family: var(--display); font-weight: 500; font-size: 22px; letter-spacing: 0.12em; text-transform: uppercase; }
.brand-sub { font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--signal); }
.top-nav { display: flex; gap: 18px; margin-left: 8px; }
.top-nav a { color: var(--ink-2); text-decoration: none; font-size: 14px; }
.top-nav a:hover, .top-nav a[aria-current="page"] { color: var(--ink); }
.top-tools { margin-left: auto; display: flex; gap: 8px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  min-height: 36px; padding: 0 12px;
  background: var(--bg-raised); color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: 4px;
  font: inherit; font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--ink-2); }
.btn-primary { background: var(--signal); color: var(--signal-ink); border-color: var(--signal); font-weight: 700; }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--signal); }
.btn kbd { font-size: 11px; color: var(--muted); border: 1px solid var(--line); border-radius: 3px; padding: 0 4px; }

/* Layout */
.shell {
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr) 220px;
  max-width: 1440px; margin: 0 auto;
}
.side {
  position: sticky; top: var(--header); align-self: start;
  height: calc(100vh - var(--header)); overflow-y: auto;
  padding: 24px 16px 48px 20px;
  border-right: 1px solid var(--line);
}
.menu-btn, .side .side-close { display: none; }
.side h2 {
  margin: 22px 0 6px; font: 500 12px/1.4 var(--body);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted);
}
.side h2:first-child { margin-top: 0; }
.side ul { list-style: none; margin: 0; padding: 0; }
.side a {
  display: block; padding: 4px 10px; margin-left: -10px;
  color: var(--ink-2); text-decoration: none; font-size: 14px; line-height: 1.45;
  border-left: 2px solid transparent;
}
.side a:hover { color: var(--ink); }
.side a[aria-current="page"] { color: var(--ink); border-left-color: var(--signal); background: var(--bg-raised); }

main { min-width: 0; padding: 28px 48px 96px; }
.toc { position: sticky; top: var(--header); align-self: start; padding: 28px 20px; max-height: calc(100vh - var(--header)); overflow-y: auto; }
.toc h2 { margin: 0 0 8px; font: 500 12px/1.4 var(--body); letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.toc ul { list-style: none; margin: 0; padding: 0; border-left: 1px solid var(--line); }
.toc a { display: block; padding: 3px 0 3px 12px; font-size: 13px; color: var(--ink-2); text-decoration: none; }
.toc a:hover { color: var(--ink); }

.prose { max-width: 760px; }
.meta {
  display: flex; flex-wrap: wrap; gap: 6px 18px;
  padding-bottom: 10px; margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
  font: 12px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted);
}
.kicker {
  margin: 0 0 8px; font-size: 12px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--signal);
}
h1, h2, h3 { line-height: 1.15; }
h1 {
  margin: 0 0 14px;
  font-family: var(--display); font-weight: 500; font-size: clamp(34px, 4.4vw, 52px);
  letter-spacing: 0.02em; text-transform: uppercase;
}
h2 {
  margin: 48px 0 12px; padding-top: 18px; border-top: 1px solid var(--line);
  font-family: var(--display); font-weight: 500; font-size: 28px; letter-spacing: 0.03em; text-transform: uppercase;
}
h3 { margin: 28px 0 8px; font-size: 18px; }
.lede { font-size: 19px; line-height: 1.55; color: var(--ink-2); margin: 0 0 24px; max-width: 680px; }
p, ul, ol { margin: 0 0 16px; }
li { margin: 4px 0; }
hr { border: 0; border-top: 1px solid var(--line); margin: 32px 0; }
.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Cards and grids */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); margin: 16px 0 24px; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); }
.card {
  display: block; position: relative;
  padding: 16px 18px; background: var(--bg-raised);
  border: 1px solid var(--line); border-radius: 6px;
  color: var(--ink); text-decoration: none;
}
a.card:hover { border-color: var(--line-strong); }
a.card:hover .card-title { text-decoration: underline; text-underline-offset: 0.18em; }
.card-kicker { font-size: 11px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--signal); }
.card-title { display: block; margin: 4px 0 6px; font-weight: 700; font-size: 16px; line-height: 1.3; }
.card p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.5; }

.hero { padding: 18px 0 8px; }
.hero h1 { font-size: clamp(40px, 6vw, 72px); line-height: 1.0; margin-bottom: 16px; }
.hero .tagline { font-family: var(--display); font-size: 22px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--signal); margin: 0 0 12px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 8px; }

/* Code */
.code { position: relative; margin: 14px 0 22px; }
.code-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 10px 6px 14px; background: var(--bg-raised);
  border: 1px solid var(--line); border-bottom: 0; border-radius: 6px 6px 0 0;
  font: 12px/1.4 var(--mono); color: var(--muted);
}
.code-head .btn { min-height: 28px; padding: 0 10px; font-size: 12px; }
pre {
  margin: 0; padding: 14px 16px; overflow-x: auto;
  background: var(--bg-sunk); border: 1px solid var(--line); border-radius: 0 0 6px 6px;
  font-size: 13.5px; line-height: 1.6; tab-size: 2;
}
pre.bare { border-radius: 6px; }
pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.tok-c { color: var(--muted); font-style: italic; }

/* Tables */
.table-wrap { overflow-x: auto; margin: 14px 0 22px; border: 1px solid var(--line); border-radius: 6px; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; vertical-align: top; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 700; background: var(--bg-raised); }
tr:last-child td { border-bottom: 0; }

/* Callouts */
.callout { margin: 18px 0; padding: 12px 16px; border: 1px solid var(--line); border-left: 3px solid var(--signal); border-radius: 0 6px 6px 0; background: var(--bg-raised); }
.callout p:last-child, .callout ul:last-child { margin-bottom: 0; }
.callout-title { display: block; font-size: 12px; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; color: var(--signal); margin-bottom: 4px; }
.callout.caution { border-left-color: var(--step); }
.callout.caution .callout-title { color: var(--step); }

/* Labels and badges */
.reality, .outcome, .avail {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 2px 8px; border-radius: 3px;
  font: 700 11px/1.6 var(--body); letter-spacing: 0.14em; text-transform: uppercase;
  white-space: nowrap; border: 1px solid currentColor;
}
.reality-LIVE { color: var(--signal); }
.reality-LIVE::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.reality-REPLAY { color: var(--ink-2); }
.reality-REPLAY::before { content: "↺"; letter-spacing: 0; }
.reality-SIMULATED { color: var(--ink-2); border-style: dashed; }
.outcome-allow { color: var(--allow); }
.outcome-step_up { color: var(--step); }
.outcome-deny { color: var(--deny); }
.outcome-price { color: var(--gold); }
.outcome-unknown, .outcome-meter, .outcome-edit, .outcome-throttle, .outcome-tarpit, .outcome-decoy { color: var(--unknown); }
.avail { color: var(--ink-2); letter-spacing: 0.08em; }
.avail-shipped { color: var(--allow); }
.avail-planned, .avail-not-built { color: var(--unknown); border-style: dashed; }

/* Evidence grade */
.grade {
  margin: 18px 0 24px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg-raised);
}
.grade-head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 12px 16px; border-bottom: 1px solid var(--line); }
.grade-kicker { margin: 0; }
.grade-rung { font-family: var(--display); font-size: 22px; letter-spacing: 0.06em; text-transform: uppercase; }
.grade-ladder { display: inline-flex; gap: 3px; margin-left: auto; }
.grade-ladder span { width: 18px; height: 6px; background: var(--line-strong); border-radius: 1px; }
.grade-ladder span.on { background: var(--signal); }
.grade dl { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 6px 14px; margin: 0; padding: 12px 16px 14px; font-size: 14px; }
.grade dt { color: var(--muted); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; padding-top: 2px; }
.grade dd { margin: 0; color: var(--ink-2); }
.grade dd ul { margin: 0; padding-left: 18px; }

/* Continuum ladder */
.ladder { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 6px; margin: 18px 0 28px; }
.ladder a { display: block; padding: 12px 10px 14px; border: 1px solid var(--line); border-top: 3px solid var(--line-strong); border-radius: 0 0 6px 6px; color: var(--ink); text-decoration: none; background: var(--bg-raised); }
.ladder a:hover { border-top-color: var(--signal); }
.ladder a[aria-current="page"] { border-top-color: var(--signal); }
.ladder .n { font-family: var(--display); font-size: 30px; line-height: 1; color: var(--signal); }
.ladder .t { display: block; margin-top: 6px; font-size: 13px; font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; }
.ladder .q { display: block; margin-top: 4px; font-size: 12.5px; color: var(--ink-2); line-height: 1.4; }

.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 12px 0 24px; }
.two-col > div { padding: 14px 16px; border: 1px solid var(--line); border-radius: 6px; background: var(--bg-raised); }
.two-col h3 { margin-top: 0; font-size: 13px; letter-spacing: 0.12em; text-transform: uppercase; }
.two-col ul { margin: 0; padding-left: 18px; font-size: 14.5px; }
.can h3 { color: var(--allow); }
.cannot h3 { color: var(--ink); }

.frame { display: grid; grid-template-columns: 190px minmax(0, 1fr); margin: 12px 0 24px; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.frame dt, .frame dd { margin: 0; padding: 9px 14px; border-bottom: 1px solid var(--line); font-size: 14.5px; }
.frame dt { background: var(--bg-raised); color: var(--muted); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; padding-top: 11px; }
.frame dt:last-of-type, .frame dd:last-of-type { border-bottom: 0; }

ol.steps { list-style: none; counter-reset: step; padding: 0; }
ol.steps > li { counter-increment: step; position: relative; padding-left: 44px; margin: 0 0 22px; }
ol.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: 0;
  width: 28px; height: 28px; display: grid; place-items: center;
  border: 1px solid var(--line-strong); border-radius: 50%;
  font: 500 15px/1 var(--display); color: var(--signal);
}
ol.steps h3 { margin: 2px 0 6px; }

/* Playground */
.pg { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 20px; margin: 16px 0 24px; }
.pg form, .pg-out { border: 1px solid var(--line); border-radius: 6px; background: var(--bg-raised); padding: 16px; }
.pg-out { min-height: 360px; }
.receipt-display { display: contents; }
.field { display: block; margin: 0 0 14px; }
.field > span { display: block; margin-bottom: 4px; font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
input[type="text"], select, textarea {
  width: 100%; min-height: 38px; padding: 6px 10px;
  background: var(--bg); color: var(--ink);
  border: 1px solid var(--line-strong); border-radius: 4px; font: inherit; font-size: 14px;
}
.check { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; margin: 0 0 14px; }
.check input { margin-top: 4px; }
fieldset { border: 0; padding: 0; margin: 0 0 14px; }
legend { padding: 0; margin-bottom: 4px; font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.result-row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 12px; }
.result-row strong { font-family: var(--mono); font-weight: 400; font-size: 14px; }
.status-table { table-layout: fixed; min-width: 560px; }
.status-table .c-service { width: 34%; }
.status-table .c-state { width: 120px; }
.status-table td { height: 4.6em; vertical-align: top; }
.status-line { font-size: 14px; color: var(--ink-2); margin: 0 0 12px; }
.verify-ok { color: var(--allow); font-weight: 700; }
.verify-bad { color: var(--ink); font-weight: 700; }
.pg-out .frame { grid-template-columns: 124px minmax(0, 1fr); }
.pg-out .frame dd { overflow-wrap: anywhere; }
.pg-out .frame dd .btn { margin-top: 6px; }
.theme-icon { width: 16px; height: 16px; }

/* Search */
dialog.search {
  width: min(640px, calc(100vw - 32px)); max-height: min(560px, calc(100vh - 64px));
  margin-top: 10vh; padding: 0; border: 1px solid var(--line-strong); border-radius: 8px;
  background: var(--bg-raised); color: var(--ink);
}
dialog.search::backdrop { background: rgb(0 0 0 / 0.55); }
.search-box { display: flex; align-items: center; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.search-box input { border: 0; background: transparent; font-size: 16px; min-height: 32px; }
.search-box input:focus-visible { outline: none; }
.search-results { list-style: none; margin: 0; padding: 6px; overflow-y: auto; max-height: 440px; }
.search-results a { display: block; padding: 8px 10px; border-radius: 4px; color: var(--ink); text-decoration: none; }
.search-results a:hover, .search-results a:focus, .search-results a[aria-selected="true"] { background: var(--bg-sunk); outline: none; }
.search-results .sr-sec { display: block; font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--signal); }
.search-results .sr-ex { display: block; font-size: 13px; color: var(--ink-2); }
.search-empty { padding: 16px; color: var(--muted); font-size: 14px; }

.foot { border-top: 1px solid var(--line); margin-top: 64px; padding: 24px 0 0; font-size: 13px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 8px 24px; }
.foot .tag { font-family: var(--display); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); font-size: 15px; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

@media (max-width: 1180px) {
  .shell { grid-template-columns: 248px minmax(0, 1fr); }
  .toc { display: none; }
}
@media (max-width: 860px) {
  .shell { display: block; }
  .top-nav { display: none; }
  .menu-btn { display: inline-flex; }
  .side { display: none; }
  .side:target, .side.open {
    display: block; position: fixed; inset: var(--header) 0 0 0; z-index: 15;
    align-self: stretch; height: auto; border-right: 0; background: var(--bg); padding: 16px 20px 64px;
  }
  .side .side-close { display: inline-flex; margin-bottom: 8px; }
  main { padding: 20px 18px 72px; }
  .pg, .two-col { grid-template-columns: 1fr; }
  .ladder { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .frame { grid-template-columns: 1fr; }
  .frame dt { border-bottom: 0; padding-bottom: 0; }
  .grade dl { grid-template-columns: 1fr; }
  .grade dt { padding-top: 6px; }
  .btn-label { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}