/* RapTor — Field Manual. Token source of truth: DESIGN.md */

@font-face {
  font-family: "Hanken Grotesk";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/hanken-grotesk-var.woff2") format("woff2");
}
@font-face {
  font-family: "Hanken Grotesk";
  font-style: italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/hanken-grotesk-italic-var.woff2") format("woff2");
}

:root {
  --bg: oklch(0.965 0.012 85);
  --surface: oklch(0.925 0.028 80);
  --note-bg: oklch(0.945 0.02 70);
  --band: oklch(0.24 0.015 65);
  --text: oklch(0.27 0.015 65);
  --text-muted: oklch(0.45 0.02 65);
  --on-band: oklch(0.95 0.012 85);
  --on-band-muted: oklch(0.78 0.02 75);
  --primary: oklch(0.50 0.14 50);
  --primary-hover: oklch(0.42 0.13 50);
  --on-primary: oklch(0.95 0.012 85);
  --accent: oklch(0.62 0.17 55);
  --accent-on-band: oklch(0.70 0.16 55);
  --border: oklch(0.83 0.015 75);
  --border-band: oklch(0.38 0.02 65);
  --paper-bright: oklch(0.985 0.008 90);

  --font-text: "Hanken Grotesk", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Menlo, Consolas, monospace;

  --step-h1: clamp(2rem, 1.45rem + 2.6vw, 3.1rem);
  --step-h2: clamp(1.4rem, 1.18rem + 1.1vw, 1.85rem);
  --step-h3: clamp(1.12rem, 1.04rem + 0.4vw, 1.28rem);
  --step-body: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --step-small: 0.8125rem;
  --step-stamp: 0.75rem;

  --measure: 68ch;
  --shell: 72rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-text);
  font-size: var(--step-body);
  line-height: 1.65;
}

::selection { background: var(--accent); color: var(--band); }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
header :focus-visible, footer :focus-visible { outline-color: var(--accent-on-band); }

/* ---------- skip link ---------- */

.skip-link {
  position: absolute;
  top: var(--space-2);
  left: var(--space-4);
  z-index: 10;
  transform: translateY(-300%);
  background: var(--primary);
  color: var(--on-primary);
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-3) var(--space-4);
}
.skip-link:focus-visible { transform: none; }

/* ---------- header band ---------- */

header {
  background: var(--band);
  color: var(--on-band);
  padding: var(--space-2) max(var(--space-4), calc((100% - var(--shell)) / 2));
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  column-gap: var(--space-8);
  border-bottom: 3px solid var(--accent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  color: var(--on-band);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  text-decoration: none;
  padding: var(--space-2) 0;
}
.brand img {
  display: block;
  width: 1.6em;
  height: 1.6em;
  object-fit: contain;
}
.brand:hover { color: var(--accent-on-band); }

nav[aria-label="Primary"] { flex: 1 1 auto; }
nav[aria-label="Primary"] ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}
nav[aria-label="Primary"] > ul {
  justify-content: flex-end;
  column-gap: var(--space-4);
}
nav[aria-label="Primary"] a {
  color: var(--on-band);
  text-decoration: none;
  display: inline-block;
  padding: var(--space-3) var(--space-2);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.3;
}
nav[aria-label="Primary"] a:hover {
  color: var(--accent-on-band);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
}
nav[aria-label="Primary"] a:active { color: var(--accent); }
nav[aria-label="Primary"] a[aria-current="page"] {
  color: var(--accent-on-band);
  box-shadow: inset 0 -2px 0 var(--accent-on-band);
}

/* Top-level links and group disclosures share the manual's mono stamp, so the
   header is one short row of labels instead of every page on the site. */
nav[aria-label="Primary"] > a,
nav[aria-label="Primary"] > ul > li > a,
nav[aria-label="Primary"] summary {
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

/* Group disclosures: click-to-open dropdowns that need no script. */
nav[aria-label="Primary"] details { position: relative; }
nav[aria-label="Primary"] summary {
  display: inline-block;
  padding: var(--space-3) var(--space-2);
  color: var(--on-band);
  line-height: 1.3;
  cursor: pointer;
  list-style: none;
}
nav[aria-label="Primary"] summary::-webkit-details-marker { display: none; }
nav[aria-label="Primary"] summary::after {
  content: "▸";
  margin-left: 0.4em;
  color: var(--accent-on-band);
}
nav[aria-label="Primary"] summary:hover,
nav[aria-label="Primary"] details[open] > summary { color: var(--accent-on-band); }
nav[aria-label="Primary"] details[open] > summary::after { content: "▾"; }
nav[aria-label="Primary"] details > ul {
  position: absolute;
  top: 100%;
  right: 0;
  z-index: 5;
  min-width: 12rem;
  flex-direction: column;
  flex-wrap: nowrap;
  align-items: stretch;
  background: var(--band);
  border: 1px solid var(--border-band);
  padding: var(--space-2) 0;
}
nav[aria-label="Primary"] details > ul a {
  display: block;
  padding: var(--space-2) var(--space-4);
}
nav[aria-label="Primary"] details > ul a[aria-current="page"] {
  box-shadow: inset 3px 0 0 var(--accent-on-band);
}

/* ---------- document control strip (breadcrumb + dateline) ---------- */

main { padding: 0 max(var(--space-4), calc((100% - var(--shell)) / 2)) var(--space-16); }

.content-grid { display: grid; grid-template-columns: minmax(0, 1fr); row-gap: var(--space-8); }
.content-grid > .doc-head,
.content-grid > .toc,
.content-grid > article { min-width: 0; }

.doc-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-2) var(--space-6);
  border-bottom: 2px solid var(--text);
  padding: var(--space-3) 0 var(--space-2);
}
.layout-hub .doc-head { justify-content: flex-end; }
.doc-head:empty { display: none; }

nav[aria-label="Breadcrumb"] ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
nav[aria-label="Breadcrumb"] li + li::before {
  content: "›";
  margin-right: var(--space-2);
  color: var(--accent);
}
nav[aria-label="Breadcrumb"] a { color: var(--text-muted); text-decoration: none; }
nav[aria-label="Breadcrumb"] a:hover { color: var(--primary); text-decoration: underline; }
nav[aria-label="Breadcrumb"] li[aria-current="page"] { color: var(--text); }

.dateline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  border: 1px dashed var(--primary);
  padding: var(--space-1) var(--space-2);
}
.dateline time { color: var(--text); }
.dateline:not(:has(time)) { display: none; }

.byline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.byline a { color: var(--primary); }

/* ---------- in-page navigation ---------- */

.toc {
  border: 1px solid var(--border);
  padding: var(--space-4);
  align-self: start;
}
.toc:empty { display: none; }
nav[aria-label="On this page"]::before {
  content: "Contents";
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-2);
  margin-bottom: var(--space-2);
}
nav[aria-label="On this page"] ol {
  margin: 0;
  padding-left: 1.6em;
  font-size: 0.9rem;
  line-height: 1.45;
}
nav[aria-label="On this page"] li { margin-block: var(--space-1); }
nav[aria-label="On this page"] li::marker {
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 700;
}
nav[aria-label="On this page"] a { color: var(--text); text-decoration: none; }
nav[aria-label="On this page"] a:hover { color: var(--primary); text-decoration: underline; }

/* ---------- article typography ---------- */

article { max-inline-size: var(--measure); }

article h1 {
  font-size: var(--step-h1);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: var(--space-8) 0 var(--space-6);
  text-wrap: balance;
}
article h2 {
  font-size: var(--step-h2);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-4);
  text-wrap: balance;
}
article h3 {
  font-size: var(--step-h3);
  font-weight: 700;
  line-height: 1.25;
  margin: var(--space-8) 0 var(--space-3);
  text-wrap: balance;
}
article p, article li { text-wrap: pretty; }
article p { margin: var(--space-4) 0; }
article section { margin-block-start: var(--space-12); }
article section > p:first-of-type { margin-top: 0; }

/* section numbering — the manual's section numerals, article layout only */
body.layout-article article { counter-reset: sec; }
body.layout-article article section > h2 { counter-increment: sec; }
body.layout-article article section > h2::before {
  content: counter(sec, decimal-leading-zero) " — ";
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--primary);
}

article a {
  color: var(--primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}
article a:hover { color: var(--primary-hover); text-decoration-thickness: 2px; }
article a:active { color: var(--primary-hover); }

strong, b { font-weight: 700; }

small { font-size: var(--step-small); }
article p > small:only-child { color: var(--text-muted); display: block; }

/* citation markers — visible as links, quiet in the paragraph */
sup { line-height: 0; font-size: 0.72em; }
sup a {
  font-family: var(--font-mono);
  color: var(--primary);
  text-decoration: none;
  padding: 0 0.1em;
}
sup a:hover { text-decoration: underline; color: var(--primary-hover); }

/* ---------- tables (ledgers) ---------- */

table {
  width: 100%;
  border-collapse: collapse;
  font-variant-numeric: tabular-nums;
  font-size: 0.9375rem;
  line-height: 1.5;
  margin-block: var(--space-6);
}
caption {
  caption-side: top;
  text-align: left;
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: var(--space-2);
}
thead th {
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-align: left;
  border-bottom: 2px solid var(--text);
  padding: var(--space-2) var(--space-3) var(--space-2) 0;
}
tbody th, tbody td {
  text-align: left;
  vertical-align: top;
  padding: var(--space-3) var(--space-3) var(--space-3) 0;
  border-bottom: 1px solid var(--border);
  overflow-wrap: break-word;
}
tbody th[scope="row"] { font-weight: 650; }
tbody tr:hover { background: var(--note-bg); }
tbody tr:last-child th, tbody tr:last-child td { border-bottom: 2px solid var(--text); }

/* ---------- takeaway aside: the index card ---------- */

article > aside:has(> h2) {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px dashed var(--border);
  padding: var(--space-6);
  margin-block: var(--space-12);
}
article > aside:has(> h2) h2 {
  font-size: var(--step-h3);
  margin-top: 0;
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--accent);
}
article > aside:has(> h2) ul { margin: var(--space-4) 0 0; padding-left: 1.4em; }
article > aside:has(> h2) li { margin-block: var(--space-2); }
article > aside:has(> h2) li::marker { color: var(--accent); }
article > aside:has(> h2) ul { list-style: square; }

/* ---------- role="note" aside: the caution plate ---------- */

aside[role="note"] {
  background: var(--note-bg);
  border-left: 4px solid var(--accent);
  padding: var(--space-4) var(--space-6);
  margin-block: var(--space-8);
}
aside[role="note"]::before {
  content: "Note";
  display: block;
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: var(--space-1);
}
aside[role="note"] p { margin: var(--space-2) 0; }

/* ---------- numbered procedures ---------- */

section > ol {
  padding-left: 1.5em;
  margin-block: var(--space-6);
}
section > ol > li {
  padding-left: var(--space-2);
  padding-block: var(--space-3);
}
section > ol > li + li { border-top: 1px solid var(--border); }
section > ol > li::marker {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05em;
  color: var(--primary);
}

/* unordered lists in prose stay plain; markers in ink */
section > ul, article > ul { padding-left: 1.4em; }
section > ul > li, article > ul > li { margin-block: var(--space-2); }

/* ---------- definition lists ---------- */

dl { margin-block: var(--space-6); }
dt {
  font-weight: 700;
  margin-top: var(--space-4);
  position: relative;
  padding-left: var(--space-4);
}
dt::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 0.45em;
  height: 0.45em;
  background: var(--accent);
}
dd {
  margin: var(--space-1) 0 0 var(--space-4);
  padding-left: var(--space-4);
  border-left: 1px solid var(--border);
}

/* ---------- figures, photographs, inline SVG ---------- */

figure { margin: var(--space-8) 0; }
figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--paper-bright);
  border: 1px solid var(--border);
  padding: 4px;
}
figure svg {
  display: block;
  max-width: 100%;
  height: auto;
  background: var(--paper-bright);
  border: 1px solid var(--border);
  padding: var(--space-2);
}
/* A market's own logo mark: identification, not a full-width photograph — sized
   to its own dimensions instead of stretched to fill the reading column. */
figure.market-mark img {
  width: auto;
  height: auto;
  max-width: 220px;
  max-height: 140px;
}
figcaption {
  margin-top: var(--space-2);
  font-size: var(--step-small);
  font-weight: 500;
  line-height: 1.45;
  color: var(--text-muted);
  padding-left: var(--space-4);
  position: relative;
}
figcaption::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.42em;
  width: 0.45em;
  height: 0.45em;
  background: var(--accent);
}

/* ---------- code and the dark plates ---------- */

code {
  font-family: var(--font-mono);
  font-size: 0.92em;
  background: var(--note-bg);
  padding: 0.1em 0.3em;
  overflow-wrap: anywhere;
}
pre {
  background: var(--band);
  color: var(--on-band);
  border: 1px solid var(--border-band);
  border-top: 2px dashed var(--border-band);
  padding: var(--space-4) var(--space-6);
  margin-block: var(--space-6);
  overflow-x: auto;
}
pre code {
  background: none;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

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

footer {
  background: var(--band);
  color: var(--on-band);
  padding: var(--space-12) max(var(--space-4), calc((100% - var(--shell)) / 2)) var(--space-8);
  border-top: 3px solid var(--accent);
}
footer nav[aria-label="Footer"] {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: var(--space-8) var(--space-6);
}
footer h2 {
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-band-muted);
  margin: 0 0 var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--border-band);
}
footer ul { list-style: none; margin: 0; padding: 0; }
footer nav a {
  color: var(--on-band);
  text-decoration: none;
  display: inline-block;
  padding: var(--space-2) 0;
  font-size: 0.9rem;
  line-height: 1.4;
}
footer nav a:hover { color: var(--accent-on-band); text-decoration: underline; text-underline-offset: 4px; }
footer nav a:active { color: var(--accent); }
.colophon {
  border-top: 1px solid var(--border-band);
  margin: var(--space-8) 0 0;
  padding-top: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--step-stamp);
  letter-spacing: 0.06em;
  color: var(--on-band-muted);
}

/* ---------- 404 ---------- */

.error-card {
  max-inline-size: var(--measure);
  margin: var(--space-16) auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 2px dashed var(--border);
  padding: var(--space-8);
}
.error-stamp {
  font-family: var(--font-mono);
  font-size: clamp(3rem, 2rem + 5vw, 5rem);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin: 0;
  line-height: 1;
}
.error-card h1 { font-size: var(--step-h2); margin: var(--space-4) 0; }
.error-card a { color: var(--primary); font-weight: 650; }

/* ---------- breakpoints ---------- */

/* Narrow viewports: fixed layout + anywhere-wrapping keeps every column on
   screen — no hidden columns, no horizontal scroll region. */
@media (max-width: 720px) {
  table { table-layout: fixed; }
  thead th, tbody th, tbody td { overflow-wrap: anywhere; }

  /* keep brand and the three nav stamps on one row as long as they fit */
  header { column-gap: var(--space-4); }
  .brand { font-size: 1.2rem; }
  nav[aria-label="Primary"] summary,
  nav[aria-label="Primary"] > a,
  nav[aria-label="Primary"] > ul > li > a { letter-spacing: 0.1em; }
}
@media (max-width: 560px) {
  table { font-size: var(--step-small); }
  thead th, tbody th, tbody td { padding-right: var(--space-2); }
}

@media (min-width: 1080px) {
  .content-grid {
    grid-template-columns: minmax(0, 13rem) minmax(0, var(--measure));
    column-gap: var(--space-12);
    justify-content: center;
  }
  .content-grid:has(> .toc:empty) { grid-template-columns: minmax(0, var(--measure)); }
  .doc-head { grid-column: 1 / -1; }
  .toc {
    position: sticky;
    top: var(--space-4);
    border: none;
    border-top: 2px solid var(--text);
    padding: var(--space-3) 0 0;
  }
}

/* ---------- motion: everything inside the guard ---------- */

@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }

  html { scroll-behavior: smooth; }

  a {
    transition: color 120ms ease, text-decoration-thickness 120ms ease;
  }
  .brand, nav[aria-label="Primary"] a, nav[aria-label="Primary"] summary, footer nav a {
    transition: color 120ms ease;
  }
  tbody tr { transition: background-color 120ms ease; }
}