/* Noora Product Guide — visual language
   ------------------------------------------------------------------
   The platform's native vernacular is the coded record: S-10293,
   INV-2026-0034, JV-2026-0072, FAM-000123. So the guide is set like a
   school register — dark nav lifted from the product itself, ruled
   hairlines, monospaced record metadata, screenshots mounted as plates.
   Type: Constantia for headings (the bookish register), Segoe UI for
   body (what the product itself is set in), Consolas for codes.        */

:root {
  --crimson: #c4122f;
  --crimson-deep: #8e0d22;
  --plum: #45101d;
  --ink: #101114;
  --ink-soft: #1b1d22;
  --paper: #f4f5f7;
  --card: #ffffff;
  --graphite: #4a5058;
  --heading: #0b0c0e;
  --rule: #d8dbe0;
  --rule-soft: #e8eaee;

  --serif: Constantia, "Sitka Text", Cambria, Palatino Linotype, Palatino, Georgia, serif;
  --sans: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: Consolas, "Cascadia Mono", "SF Mono", Menlo, "DejaVu Sans Mono", monospace;

  --nav-w: 20.5rem;
  --measure: 62rem;
}

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

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--graphite);
  font: 400 1rem/1.65 var(--sans);
}

/* ---------------------------------------------------------------- nav */

.nav {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--nav-w);
  overflow-y: auto;
  background: var(--ink);
  color: #b7bcc4;
  padding: 2rem 0 3rem;
}

.nav__mark {
  display: block;
  margin: 0 1.75rem 0.35rem;
  font: 700 1.05rem/1 var(--sans);
  letter-spacing: 0.34em;
  color: #fff;
  text-decoration: none;
  text-transform: uppercase;
}

.nav__mark::before {
  content: "";
  display: inline-block;
  width: 0.62rem;
  height: 0.62rem;
  margin-right: 0.6rem;
  border-radius: 50%;
  background: var(--crimson);
  box-shadow: 0 0 0 0.22rem rgba(196, 18, 47, 0.24);
  vertical-align: baseline;
}

.nav__sub {
  margin: 0 1.75rem 2.25rem;
  padding-left: 1.22rem;
  font: 400 0.8rem/1.5 var(--serif);
  font-style: italic;
  color: #6e747e;
}

.nav__group {
  margin: 0 1.75rem 0.7rem;
  padding-top: 1.4rem;
  border-top: 1px solid #26282e;
  font: 600 0.68rem/1 var(--sans);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #7d838d;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.nav__group span { color: #4e535b; letter-spacing: 0.12em; }

.nav__list { margin: 0 0 1.9rem; padding: 0; list-style: none; }

.nav__link {
  display: grid;
  grid-template-columns: 2.1rem 1fr;
  gap: 0.55rem;
  padding: 0.4rem 1.75rem 0.4rem 1.6rem;
  border-left: 2px solid transparent;
  color: #b7bcc4;
  font-size: 0.895rem;
  text-decoration: none;
}

.nav__link i {
  font: 400 0.72rem/1.7 var(--mono);
  font-style: normal;
  color: #5b616a;
  letter-spacing: 0.04em;
}

.nav__link:hover { background: var(--ink-soft); color: #fff; }
.nav__link:hover i { color: #9aa0a9; }

.nav__link[aria-current="page"] {
  background: var(--ink-soft);
  border-left-color: var(--crimson);
  color: #fff;
  font-weight: 600;
}

.nav__link[aria-current="page"] i { color: var(--crimson); }

/* ------------------------------------------------------------- shell */

.page {
  margin-left: var(--nav-w);
  padding: 4.5rem 3.5rem 6rem;
  animation: rise 0.4s ease-out both;
}

.page > * { max-width: var(--measure); }

@keyframes rise {
  from { opacity: 0; transform: translateY(0.5rem); }
  to { opacity: 1; transform: none; }
}

.eyebrow {
  margin: 0 0 0.9rem;
  font: 600 0.7rem/1 var(--sans);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--crimson-deep);
}

.eyebrow b { color: #9aa1ab; font-weight: 600; }

h1 {
  margin: 0 0 0.75rem;
  font: 400 2.85rem/1.1 var(--serif);
  letter-spacing: -0.015em;
  color: var(--heading);
}

.lede {
  margin: 0 0 2rem;
  max-width: 46rem;
  font-size: 1.115rem;
  line-height: 1.6;
  color: #3c424a;
}

/* The record strip: a register line for the screen being documented. */

.record {
  display: flex;
  flex-wrap: wrap;
  gap: 0 2.5rem;
  margin: 0 0 2.75rem;
  padding: 0.85rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--crimson);
}

.record div { display: flex; flex-direction: column; gap: 0.15rem; }

.record dt {
  font: 600 0.62rem/1 var(--sans);
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: #9aa1ab;
}

.record dd {
  margin: 0;
  font: 400 0.855rem/1.4 var(--mono);
  color: #24272c;
}

h2 {
  margin: 3.25rem 0 1.1rem;
  padding-left: 0.95rem;
  border-left: 2px solid var(--crimson);
  font: 400 1.62rem/1.25 var(--serif);
  color: var(--heading);
}

h3 {
  margin: 2.1rem 0 0.6rem;
  font: 600 1rem/1.4 var(--sans);
  color: var(--heading);
}

p { margin: 0 0 1.05rem; }

a { color: var(--crimson-deep); text-decoration-thickness: 1px; text-underline-offset: 0.16em; }
a:hover { color: var(--crimson); }

code {
  padding: 0.08em 0.34em;
  background: #eceef1;
  border-radius: 2px;
  font: 400 0.875em/1.4 var(--mono);
  color: #24272c;
}

strong { color: var(--heading); }

/* -------------------------------------------------------- do-list */

.does { margin: 0 0 1.2rem; padding: 0; list-style: none; }

.does li {
  padding: 0.62rem 0 0.62rem 1.65rem;
  border-bottom: 1px solid var(--rule-soft);
  position: relative;
}

.does li::before {
  content: "";
  position: absolute;
  top: 1.19rem;
  left: 0.1rem;
  width: 0.42rem;
  height: 1px;
  background: var(--crimson);
}

.does li:last-child { border-bottom: 0; }

/* ---------------------------------------------------------- plates */

figure {
  margin: 1.6rem 0 2.4rem;
  max-width: none;
}

figure img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--card);
  border: 1px solid var(--rule);
}

figcaption {
  display: grid;
  grid-template-columns: 4.6rem 1fr;
  gap: 0.9rem;
  margin-top: 0.7rem;
  padding-top: 0.55rem;
  border-top: 1px solid var(--rule);
  font-size: 0.855rem;
  color: #6b7280;
}

/* Slot for a plate whose screenshot has not been saved yet. */
.plate-pending {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-items: center;
  justify-content: center;
  min-height: 13rem;
  padding: 2rem 1.5rem;
  background: repeating-linear-gradient(-45deg, #fff, #fff 12px, #f6f7f8 12px, #f6f7f8 24px);
  border: 1px dashed var(--rule);
  text-align: center;
  font-size: 0.875rem;
  color: #7c838d;
}

.plate-pending b {
  font: 600 0.68rem/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--crimson-deep);
}

.plate-pending code { background: #eceef1; font-size: 0.85rem; }
.plate-pending span { max-width: 34rem; font-style: italic; }

figcaption b {
  font: 400 0.7rem/1.75 var(--mono);
  letter-spacing: 0.06em;
  color: var(--crimson-deep);
  text-transform: uppercase;
}

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

.fields {
  width: 100%;
  margin: 1.2rem 0 2rem;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.fields th, .fields td {
  padding: 0.62rem 0.9rem 0.62rem 0;
  border-bottom: 1px solid var(--rule-soft);
  text-align: left;
  vertical-align: top;
}

.fields th {
  border-bottom: 1px solid var(--rule);
  font: 600 0.66rem/1.4 var(--sans);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #9aa1ab;
  white-space: nowrap;
}

.fields td:first-child {
  width: 15rem;
  font-family: var(--mono);
  font-size: 0.845rem;
  color: #24272c;
}

/* ------------------------------------------------------------ notes */

.note {
  margin: 1.5rem 0 2rem;
  padding: 1.05rem 1.25rem;
  background: #fbf3f4;
  border: 1px solid #f0d8dc;
  border-left: 3px solid var(--crimson);
  font-size: 0.945rem;
}

.note p:last-child { margin-bottom: 0; }

.note b {
  display: block;
  margin-bottom: 0.3rem;
  font: 600 0.68rem/1 var(--sans);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--crimson-deep);
}

/* --------------------------------------------------------- related */

.related {
  margin: 3.5rem 0 0;
  padding-top: 1.3rem;
  border-top: 1px solid var(--rule);
}

.related h2 {
  margin: 0 0 0.9rem;
  padding: 0;
  border: 0;
  font: 600 0.68rem/1 var(--sans);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #9aa1ab;
}

.related ul { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 0; padding: 0; list-style: none; }

.related a {
  display: inline-block;
  padding: 0.42rem 0.85rem;
  background: var(--card);
  border: 1px solid var(--rule);
  color: #24272c;
  font-size: 0.885rem;
  text-decoration: none;
}

.related a:hover { border-color: var(--crimson); color: var(--crimson-deep); }

.related a i {
  font: 400 0.72rem/1 var(--mono);
  font-style: normal;
  color: #9aa1ab;
  margin-right: 0.5rem;
}

/* ------------------------------------------------------------- index */

.hero { margin-bottom: 3.5rem; }

.hero h1 { font-size: 3.6rem; max-width: 34rem; }

.hero .lede { font-size: 1.22rem; max-width: 42rem; }

.surfaces {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0 1rem;
  max-width: var(--measure);
}

.surface {
  padding: 1.6rem 1.6rem 1.75rem;
  color: #d7dae0;
  background: var(--ink);
  border-top: 3px solid var(--crimson);
}

.surface--portal { background: var(--plum); }

.surface h2 {
  margin: 0 0 0.5rem;
  padding: 0;
  border: 0;
  color: #fff;
  font-size: 1.45rem;
}

.surface p { font-size: 0.945rem; }

.surface dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.3rem 1rem;
  margin: 1.1rem 0 0;
  font: 400 0.8rem/1.5 var(--mono);
}

.surface dt { color: #8a919b; }
.surface dd { margin: 0; color: #e6e8ec; }

.surface img {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 1.35rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.contents { margin: 0; padding: 0; list-style: none; max-width: var(--measure); }

.contents li {
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding: 0.72rem 0;
  border-bottom: 1px solid var(--rule-soft);
}

.contents i {
  font: 400 0.75rem/1.7 var(--mono);
  font-style: normal;
  color: #9aa1ab;
}

.contents a { font-size: 1.02rem; text-decoration: none; color: var(--heading); }
.contents a:hover { color: var(--crimson); text-decoration: underline; }
.contents em { font-style: normal; font-size: 0.855rem; color: #7c838d; }
.contents code { background: none; padding: 0; color: #8a919b; font-size: 0.8rem; }

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

@media (max-width: 60rem) {
  :root { --nav-w: 0; }

  .nav {
    position: static;
    width: auto;
    padding: 1.5rem 0 2rem;
  }

  /* 20 items won't sit in a rail on a phone, so they become wrapped chips.
     The index numbers are dropped — they misalign once items wrap, and the
     nav order carries the same information. */
  .nav__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin: 0 1.35rem 1.4rem;
  }

  .nav__link {
    display: block;
    padding: 0.32rem 0.72rem;
    border: 1px solid #2b2e35;
    border-left: 1px solid #2b2e35;
    border-radius: 999px;
    font-size: 0.85rem;
  }

  .nav__link i { display: none; }

  .nav__link[aria-current="page"] {
    background: var(--crimson);
    border-color: var(--crimson);
    color: #fff;
  }

  .nav__mark, .nav__sub, .nav__group { margin-left: 1.35rem; margin-right: 1.35rem; }
  .nav__sub { margin-bottom: 1.5rem; }
  .nav__group { padding-top: 1.1rem; margin-bottom: 0.85rem; }

  .page { margin-left: 0; padding: 2.5rem 1.35rem 4rem; }
  h1 { font-size: 2.1rem; }
  .hero h1 { font-size: 2.4rem; }
  .record { gap: 0 1.5rem; }
  figcaption { grid-template-columns: 1fr; gap: 0.2rem; }
  .fields td:first-child { width: auto; }
  .contents li { grid-template-columns: 2.3rem 1fr; }
  .contents em { grid-column: 2; }
}

@media (prefers-reduced-motion: reduce) {
  .page { animation: none; }
}

@media print {
  .nav { display: none; }
  .page { margin: 0; padding: 0; }
}