/*
 * The Umferðarlög brand book page. Every colour, size and face comes from /tokens.css,
 * the same file other services link: the page is its first consumer.
 * Layout: a fixed contents rail on the left, one reading column on the right;
 * on phones the rail folds into a bar at the top.
 */

:root {
  --logo-ink: var(--ul-ink);
  --rail-w: 16.5rem;
  --column: 70rem;
  --gutter-x: clamp(1rem, 5vw, 4.5rem);
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --stage-line: rgb(24 32 36 / 10%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --logo-ink: var(--ul-road-line);
    --stage-line: rgb(241 244 244 / 16%);
  }
}

:root[data-theme="dark"] {
  --logo-ink: var(--ul-road-line);
  --stage-line: rgb(241 244 244 / 16%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
  scrollbar-color: var(--ul-text-muted) transparent;
  accent-color: var(--ul-brand);
}

body {
  margin: 0;
  background: var(--ul-bg);
  color: var(--ul-text);
  font: 400 1rem/1.55 var(--ul-font-text);
  -webkit-font-smoothing: antialiased;
  caret-color: var(--ul-brand);
}

::selection {
  background: var(--ul-action);
  color: var(--ul-on-brand);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  color: var(--ul-heading);
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

a {
  color: var(--ul-brand-strong);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ul-heading);
}

img {
  max-width: 100%;
  display: block;
}

code,
pre {
  font-family: var(--mono);
  font-size: 0.875em;
}

:focus-visible {
  outline: 3px solid var(--ul-brand);
  outline-offset: 3px;
  border-radius: 4px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0.5rem;
  z-index: 50;
  padding: 0.5rem 1rem;
  border-radius: var(--ul-radius-pill);
  background: var(--ul-action);
  color: var(--ul-on-brand);
}

.skip:focus {
  left: 0.5rem;
}

.skip:hover {
  color: var(--ul-on-brand);
}

.icon {
  width: 1.125em;
  height: 1.125em;
  flex: none;
}

.num,
.table td,
.facts dd {
  font-variant-numeric: tabular-nums;
}

/* --- frame --------------------------------------------------------------- */

.page {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
}

.rail {
  position: sticky;
  top: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.25rem 1.5rem max(1.25rem, env(safe-area-inset-left, 0px));
  border-right: 1px solid var(--ul-border);
}

.rail__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rail__home {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  color: var(--ul-heading);
  font-family: var(--ul-font-plate);
  font-weight: 700;
  text-decoration: none;
}

.rail__home img {
  height: 1.75rem;
  width: 1.75rem;
}

.rail__menu {
  display: none;
}

.rail__panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 2rem;
  margin-top: 2.5rem;
  min-height: 0;
}

.toc__title {
  margin-bottom: 0.75rem;
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
}

.toc ol {
  list-style: none;
  margin: 0 -0.75rem;
  padding: 0;
  display: grid;
  gap: 0.125rem;
}

.toc a {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  border-radius: var(--ul-radius-sm);
  color: var(--ul-text-soft);
  font-weight: 500;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background-color var(--ul-duration) var(--ul-ease), color var(--ul-duration) var(--ul-ease);
}

.toc__n {
  width: 1rem;
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: 0.9375rem;
  line-height: 1;
  color: var(--ul-text-muted);
  font-variant-numeric: tabular-nums;
}

.toc a:hover {
  background: var(--ul-surface-alt);
  color: var(--ul-heading);
}

.toc a[aria-current="true"] {
  background: var(--ul-surface);
  color: var(--ul-heading);
  box-shadow: 0 1px 3px rgb(24 32 36 / 8%);
}

.toc a[aria-current="true"] .toc__n {
  color: var(--ul-brand-strong);
}

.rail__controls {
  display: grid;
  gap: 0.75rem;
}

.segmented {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  padding: 0.25rem;
  border-radius: var(--ul-radius-pill);
  background: var(--ul-surface-alt);
}

.segmented button {
  display: grid;
  place-items: center;
  height: 2.25rem;
  border: 0;
  border-radius: var(--ul-radius-pill);
  background: transparent;
  color: var(--ul-text-muted);
  cursor: pointer;
}

.segmented button[aria-pressed="true"] {
  background: var(--ul-surface);
  color: var(--ul-heading);
  box-shadow: 0 1px 3px rgb(24 32 36 / 10%);
}

.lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  height: 2.75rem;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-pill);
  color: var(--ul-heading);
  font-weight: 500;
  text-decoration: none;
}

.lang:hover {
  border-color: var(--ul-heading);
  color: var(--ul-heading);
}

.main {
  min-width: 0;
  max-width: calc(var(--column) + 2 * var(--gutter-x));
  padding-inline: max(var(--gutter-x), env(safe-area-inset-left, 0px)) max(var(--gutter-x), env(safe-area-inset-right, 0px));
  padding-bottom: 4rem;
}

@media (max-width: 1023px) {
  .page {
    grid-template-columns: minmax(0, 1fr);
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto;
    height: env(safe-area-inset-top, 0px);
    z-index: 21;
    background: var(--ul-bg);
  }

  .rail {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 20;
    height: auto;
    padding: 0.625rem max(1rem, env(safe-area-inset-right, 0px)) 0.625rem max(1rem, env(safe-area-inset-left, 0px));
    border-right: 0;
    border-bottom: 1px solid var(--ul-border);
    background: color-mix(in srgb, var(--ul-bg) 88%, transparent);
    backdrop-filter: saturate(1.6) blur(14px);
  }

  .rail__menu {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 2.75rem;
    padding: 0 1rem;
    border: 1px solid var(--ul-border);
    border-radius: var(--ul-radius-pill);
    background: var(--ul-surface);
    color: var(--ul-heading);
    font: inherit;
    font-weight: 500;
    cursor: pointer;
  }

  .rail__panel {
    display: none;
    margin-top: 0.75rem;
    padding-bottom: 0.75rem;
    max-height: calc(100dvh - 5rem);
    overflow-y: auto;
  }

  .rail:has([data-menu][aria-expanded="true"]) .rail__panel {
    display: flex;
  }
}

/* --- cover --------------------------------------------------------------- */

.cover {
  padding-block: clamp(3rem, 9vw, 7.5rem) clamp(3rem, 6vw, 5rem);
  border-bottom: 1px solid var(--ul-border);
}

.cover__logo {
  margin: 0;
}

.logo-inline {
  display: block;
  width: 100%;
  height: auto;
}

.logo-inline .ink {
  fill: var(--logo-ink);
}

.logo-inline .ink-stroke {
  stroke: var(--logo-ink);
}

.cover__logo .logo-inline {
  max-width: 52rem;
}

.cover__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 1.5rem 3rem;
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
}

.cover__title {
  font: var(--ul-type-h2);
  color: var(--ul-heading);
  letter-spacing: -0.02em;
}

.cover__lead {
  font: var(--ul-type-lead);
  color: var(--ul-text-soft);
  max-width: 38rem;
}

.facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.5rem;
  margin: clamp(2.5rem, 5vw, 4rem) 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--ul-border);
}

.facts dt {
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
}

.facts dd {
  margin: 0.25rem 0 0;
  color: var(--ul-heading);
  font-weight: 500;
}

.facts__files {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.75rem;
}

@media (max-width: 767px) {
  .chapter__head .lead {
    grid-column: 1 / -1;
  }

  .cover__body {
    grid-template-columns: minmax(0, 1fr);
  }

  .facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* --- chapters ------------------------------------------------------------ */

.chapter {
  padding-top: clamp(5rem, 10vw, 8rem);
}

.chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: clamp(1rem, 3vw, 2rem);
  align-items: baseline;
}

.chapter__number {
  grid-row: span 2;
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: clamp(3.5rem, 8vw, 6.5rem);
  line-height: 0.82;
  color: var(--ul-brand);
  font-variant-numeric: tabular-nums;
}

.chapter__head h2 {
  font: var(--ul-type-h2);
  letter-spacing: -0.02em;
}

.lead {
  margin-top: 1rem;
  max-width: 40rem;
  font: var(--ul-type-lead);
  color: var(--ul-text-soft);
}

.block {
  margin-top: clamp(3.5rem, 7vw, 5rem);
}

.block h3 {
  font: var(--ul-type-h3);
  letter-spacing: -0.01em;
}

.block__text {
  margin-top: 0.5rem;
  max-width: 40rem;
  color: var(--ul-text-soft);
}

.block > :is(div, ul, dl, figure, table, img):first-of-type,
.block > .table-wrap {
  margin-top: 1.5rem;
}

.note {
  margin-top: 1rem;
  max-width: 40rem;
  color: var(--ul-text-muted);
  font-size: 0.9375rem;
}

.note--warn {
  padding: 0.875rem 1.125rem;
  border-radius: var(--ul-radius-sm);
  background: var(--ul-brand-tint);
  color: var(--ul-text);
}

.footer {
  margin-top: clamp(5rem, 10vw, 8rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--ul-border);
  color: var(--ul-text-muted);
  font-size: 0.875rem;
  display: grid;
  gap: 0.25rem;
}

/* --- shared pieces ------------------------------------------------------- */

.copy {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  max-width: 100%;
  margin: -0.25rem -0.5rem;
  padding: 0.25rem 0.5rem;
  border: 0;
  border-radius: var(--ul-radius-route);
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.copy__value {
  min-width: 0;
  overflow-wrap: anywhere;
}

.copy__icon,
.copy__done {
  width: 0.9375rem;
  height: 0.9375rem;
  color: var(--ul-text-muted);
  opacity: 0;
  transition: opacity 0.15s ease;
}

.copy__done {
  display: none;
  color: var(--ul-ok-strong);
}

.copy:hover {
  background: var(--ul-surface-alt);
}

.copy:hover .copy__icon,
.copy:focus-visible .copy__icon {
  opacity: 1;
}

.copy.is-copied .copy__icon {
  display: none;
}

.copy.is-copied .copy__done {
  display: block;
  opacity: 1;
}

@media (hover: none) {
  .copy__icon {
    opacity: 0.6;
  }
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  min-height: 2rem;
  padding: 0 0.75rem;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-pill);
  background: var(--ul-surface);
  color: var(--ul-heading);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
}

.chip:hover {
  border-color: var(--ul-heading);
  color: var(--ul-heading);
}

.files {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.files .copy {
  margin: 0;
  min-height: 2rem;
  padding: 0 0.75rem;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-pill);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ul-heading);
}

.files .copy__icon {
  opacity: 1;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.table th,
.table td {
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid var(--ul-border);
  text-align: left;
  vertical-align: middle;
}

.table tr:last-child > * {
  border-bottom: 0;
}

.table thead th {
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--ul-surface-alt);
}

.table tbody th {
  color: var(--ul-heading);
  font-weight: 500;
}

.table .ok,
.table .no {
  white-space: nowrap;
}

.table .ok .icon {
  color: var(--ul-ok-strong);
  margin-right: 0.5rem;
  vertical-align: -0.2em;
}

.table .no {
  color: var(--ul-text-muted);
}

.table .no .icon {
  color: var(--ul-danger-strong);
  margin-right: 0.5rem;
  vertical-align: -0.2em;
}

.table .no s {
  text-decoration-color: var(--ul-danger-strong);
}

.table--files td {
  white-space: nowrap;
}

.table--files a {
  font-size: 0.875rem;
}

.chip-colour {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  flex: none;
  border-radius: 50%;
  box-shadow: inset 0 0 0 1px var(--stage-line);
}

/* Specimens sit on the ground they are made for, in either appearance. */
.ground-paper {
  background: var(--ul-paper);
  box-shadow: inset 0 0 0 1px var(--stage-line);
}

.ground-basalt {
  background: var(--ul-basalt);
  box-shadow: inset 0 0 0 1px var(--stage-line);
}

.ground-ink {
  background: var(--ul-ink);
  box-shadow: inset 0 0 0 1px var(--stage-line);
}

.ground-glacier {
  background: var(--ul-glacier);
}

.ground-asphalt {
  background: var(--ul-asphalt);
}

.specimen {
  margin: 0;
  min-width: 0;
}

.specimen__stage {
  --inset: 14%;
  position: relative;
  aspect-ratio: 3 / 2;
  border-radius: var(--ul-radius-md);
}

.specimen__stage img {
  position: absolute;
  top: var(--inset);
  left: var(--inset);
  width: calc(100% - 2 * var(--inset));
  height: calc(100% - 2 * var(--inset));
  object-fit: contain;
}

.specimen figcaption {
  display: grid;
  gap: 0.25rem;
  margin-top: 0.875rem;
}

.specimen figcaption strong {
  color: var(--ul-heading);
}

.specimen__text {
  color: var(--ul-text-soft);
  font-size: 0.9375rem;
}

.lockups,
.pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2.5rem 1.5rem;
}

.specimen--stacked .specimen__stage,
.specimen--mark .specimen__stage {
  --inset: 16%;
}

.ways {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 2.5rem 1.25rem;
}

.ways .specimen__stage {
  --inset: 16%;
  aspect-ratio: 4 / 3;
}

.grounds {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr));
  gap: 0.75rem;
}

.ground {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  margin: 0;
  padding: 14%;
  border-radius: var(--ul-radius-md);
  overflow: hidden;
}

.ground figcaption {
  position: absolute;
  left: 0.875rem;
  bottom: 0.75rem;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--ul-road-line);
}

.ground-paper figcaption,
.ground-basalt figcaption {
  color: var(--ul-slate);
}

@media (max-width: 767px) {
  .lockups,
  .pair {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --- logo: clear space, minimum, icons, misuse ---------------------------- */

.space {
  position: relative;
  padding: var(--pad);
  border-radius: var(--ul-radius-md);
  background:
    repeating-linear-gradient(-45deg, var(--ul-brand-tint) 0 6px, transparent 6px 12px),
    var(--ul-paper);
  box-shadow: inset 0 0 0 1px var(--stage-line);
  --logo-ink: var(--ul-ink);
}

.space__logo {
  background: var(--ul-paper);
  outline: 1px dashed var(--ul-brand);
}

.space__x {
  position: absolute;
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: clamp(0.75rem, 1.5vw, 0.9375rem);
  line-height: 1;
  color: var(--ul-glacier);
}

.space__x--top {
  top: calc(var(--pad) / 2);
  left: 50%;
  translate: -50% -50%;
}

.space__x--bottom {
  bottom: calc(var(--pad) / 2);
  left: 50%;
  translate: -50% 50%;
}

.space__x--left {
  left: calc(var(--pad) / 2);
  top: 50%;
  translate: -50% -50%;
}

.space__x--right {
  right: calc(var(--pad) / 2);
  top: 50%;
  translate: 50% -50%;
}

.minimum {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
  gap: 1.25rem;
}

.minimum figure {
  margin: 0;
}

.minimum__stage {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  height: 9rem;
  border-radius: var(--ul-radius-md);
}

.minimum__stage img {
  height: auto;
}

.minimum figcaption {
  display: grid;
  gap: 0.125rem;
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--ul-text-soft);
}

.minimum figcaption strong {
  color: var(--ul-heading);
}

.icons {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem 2rem;
}

.icon-tile {
  margin: 0;
  display: grid;
  justify-items: start;
  gap: 0.25rem;
}

.icon-tile > img {
  width: 7.5rem;
  height: 7.5rem;
  filter: drop-shadow(0 1px 2px rgb(24 32 36 / 14%));
}

.icon-tile--tab {
  align-content: start;
}

.tab {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  height: 2.5rem;
  margin: 2.5rem 0 0.75rem;
  padding: 0 1.125rem;
  border-radius: var(--ul-radius-sm) var(--ul-radius-sm) 0 0;
  background: var(--ul-surface);
  box-shadow: 0 -1px 0 var(--ul-border), 0 4px 16px rgb(24 32 36 / 8%);
  font-size: 0.8125rem;
  color: var(--ul-heading);
}

.misuse {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  gap: 2rem 1.25rem;
}

.misuse__item {
  margin: 0;
}

.misuse__stage {
  --logo-ink: var(--ul-ink);
  display: grid;
  place-items: center;
  aspect-ratio: 4 / 3;
  padding: 14%;
  border-radius: var(--ul-radius-md);
  background: var(--ul-paper);
  box-shadow: inset 0 0 0 1px var(--stage-line);
  overflow: hidden;
}

.misuse__item figcaption {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  color: var(--ul-text);
}

.misuse__item figcaption .icon {
  color: var(--ul-danger-strong);
}

.misuse--stretch svg {
  transform: scale(1.3, 0.72);
}

.misuse--recolour .ink-stroke {
  stroke: var(--ul-glacier);
}

.misuse--recolour .mask-dash {
  stroke: #ffffff;
}

.misuse--recolour .ink {
  fill: var(--ul-lava);
}

.misuse--rotate svg {
  transform: rotate(-14deg);
}

.misuse--effects svg {
  filter: drop-shadow(0.25rem 0.25rem 0 var(--ul-glacier));
}

.misuse--ground {
  background: var(--ul-night-cluster);
  box-shadow: none;
}

.retype {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.35rem, 2.5vw, 1.85rem);
  font-style: italic;
  color: var(--ul-ink);
  white-space: nowrap;
}

/* --- brand: voice, tagline, contacts -------------------------------------- */

.taglines {
  display: grid;
  gap: 0.75rem;
}

.tagline {
  margin: 0;
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.6vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ul-heading);
}

.tagline--ru {
  color: var(--ul-brand-strong);
}

.traits {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
  gap: 1.5rem;
}

.traits li {
  display: grid;
  gap: 0.375rem;
  padding-top: 1rem;
  border-top: 2px solid var(--ul-heading);
}

.traits strong {
  color: var(--ul-heading);
}

.traits span {
  color: var(--ul-text-soft);
  font-size: 0.9375rem;
}

.says {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.say {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
  overflow: hidden;
}

.say p {
  display: grid;
  gap: 0.5rem;
  padding: 1.25rem 1.5rem;
  font-size: 1.0625rem;
}

.say__dont {
  border-left: 1px solid var(--ul-border);
  color: var(--ul-text-muted);
}

.say__label {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
}

.say__do .say__label {
  color: var(--ul-ok-strong);
}

.say__dont .say__label {
  color: var(--ul-danger-strong);
}

.contacts {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.25rem 2rem;
  margin: 0;
}

.contacts dt {
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
}

.contacts dd {
  margin: 0.375rem 0 0;
  color: var(--ul-heading);
  font-weight: 500;
}

@media (max-width: 767px) {
  .say {
    grid-template-columns: minmax(0, 1fr);
  }

  .say__dont {
    border-left: 0;
    border-top: 1px solid var(--ul-border);
  }
}

/* --- colour --------------------------------------------------------------- */

.share {
  display: flex;
  height: 5rem;
  border-radius: var(--ul-radius-md);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px var(--stage-line);
}

.share__legend {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  font-size: 0.9375rem;
}

.share__legend li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.share__legend .chip-colour {
  width: 1rem;
  height: 1rem;
}

.share__legend .num {
  color: var(--ul-text-muted);
}

.swatches {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: 1.25rem;
}

.swatch {
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
  overflow: hidden;
}

.swatch__face {
  display: flex;
  align-items: flex-end;
  height: 11rem;
  padding: 1rem 1.25rem;
  color: var(--ul-road-line);
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: 1.125rem;
}

.swatch__face--light {
  color: var(--ul-ink);
  box-shadow: inset 0 -1px 0 var(--ul-border);
}

.swatch__body {
  padding: 1rem 1.25rem 1.25rem;
}

.swatch__role {
  margin-bottom: 1rem;
  color: var(--ul-text-soft);
  font-size: 0.9375rem;
}

.codes {
  display: grid;
  gap: 0.375rem;
  margin: 0;
  font-size: 0.875rem;
}

.codes div {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  align-items: center;
}

.codes dt {
  color: var(--ul-text-muted);
  font-size: 0.75rem;
  font-weight: 500;
}

.codes dd {
  margin: 0;
  font-family: var(--mono);
  color: var(--ul-heading);
}

.colour-rows {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
}

.colour-row {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 7rem 13rem;
  align-items: center;
  gap: 1rem;
  padding: 0.875rem 1.125rem;
  border-bottom: 1px solid var(--ul-border);
}

.colour-row:last-child {
  border-bottom: 0;
}

.colour-row .chip-colour {
  width: 2.5rem;
  height: 2.5rem;
}

.colour-row__name {
  color: var(--ul-heading);
  font-weight: 500;
}

.colour-row__name .swatch__role {
  margin: 0.125rem 0 0;
  font-weight: 400;
  font-size: 0.875rem;
}

.colour-row .copy {
  font-family: var(--mono);
  font-size: 0.875rem;
}

.role-cell {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
}

.pair-sample {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2rem;
  margin-right: 0.875rem;
  border-radius: var(--ul-radius-route);
  font-weight: 700;
  box-shadow: inset 0 0 0 1px var(--stage-line);
  vertical-align: middle;
}

.grade {
  display: inline-block;
  padding: 0.125rem 0.625rem;
  border-radius: var(--ul-radius-pill);
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--ul-surface-alt);
  color: var(--ul-text-soft);
}

.grade--aaa,
.grade--aa {
  background: color-mix(in srgb, var(--ul-ok) 14%, transparent);
  color: var(--ul-ok-strong);
}

.grade--fail {
  background: color-mix(in srgb, var(--ul-danger) 12%, transparent);
  color: var(--ul-danger-strong);
}

@media (max-width: 767px) {
  .colour-row {
    grid-template-columns: 2.5rem minmax(0, 1fr);
    row-gap: 0.25rem;
  }

  .colour-row .copy {
    grid-column: 2;
    justify-self: start;
    margin: 0;
  }
}

/* --- type ----------------------------------------------------------------- */

.faces {
  display: grid;
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.face {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
}

.face__hero {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: end;
  gap: 1rem 2.5rem;
}

.face__aa {
  font-family: var(--ul-font-plate);
  font-size: clamp(4.5rem, 11vw, 8.5rem);
  font-weight: 700;
  line-height: 0.85;
  letter-spacing: -0.03em;
  color: var(--ul-heading);
}

.face__aa--display {
  font-family: var(--ul-font-cluster);
  font-weight: 700;
  letter-spacing: 0;
  color: var(--ul-brand);
}

.face__name {
  font-family: var(--ul-font-plate);
  font-size: 1.5rem;
}

.face__hero p {
  margin-top: 0.25rem;
  color: var(--ul-text-soft);
}

.face__hero .face__credit {
  color: var(--ul-text-muted);
  font-size: 0.875rem;
}

.face__stack {
  display: block;
  margin-top: 0.75rem;
  color: var(--ul-text-muted);
  font-size: 0.75rem;
  overflow-wrap: anywhere;
}

.face__glyphs {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ul-border);
  font-family: var(--ul-font-plate);
  font-size: clamp(1.125rem, 2.2vw, 1.5rem);
  line-height: 1.5;
  color: var(--ul-heading);
  overflow-wrap: anywhere;
}

.face__glyphs--display {
  font-family: var(--ul-font-cluster);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: 0.02em;
}

.weights {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
}

.weight {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  align-items: baseline;
  gap: 1rem;
  padding-block: 1rem;
  border-top: 1px solid var(--ul-border);
}

.weight__meta {
  display: grid;
  font-family: var(--ul-font-text);
  font-weight: 400;
  font-size: 0.875rem;
  color: var(--ul-text-soft);
}

.weight__meta strong {
  font-weight: 700;
  color: var(--ul-heading);
}

.weight__meta em {
  font-style: normal;
  color: var(--ul-text-muted);
}

.weight__sample {
  font-size: clamp(1.25rem, 2.6vw, 1.875rem);
  line-height: 1.2;
  color: var(--ul-heading);
}

.scale {
  border-top: 1px solid var(--ul-border);
}

.scale__head {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  padding: 0.75rem 0;
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
  border-bottom: 1px solid var(--ul-border);
}

.scale__row {
  display: grid;
  grid-template-columns: 9rem minmax(0, 1fr);
  align-items: baseline;
  gap: 1rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--ul-border);
}

.scale__meta {
  display: grid;
  font-size: 0.8125rem;
  color: var(--ul-text-muted);
  font-variant-numeric: tabular-nums;
}

.scale__meta strong {
  color: var(--ul-heading);
  font-size: 0.9375rem;
}

.scale__sample {
  color: var(--ul-heading);
  overflow-wrap: anywhere;
}

.scale__sample.is-upper {
  text-transform: uppercase;
}

.rules {
  margin: 0;
  padding-left: 1.25rem;
  display: grid;
  gap: 0.5rem;
  max-width: 40rem;
}

.rules li::marker {
  color: var(--ul-brand);
}

.glyph-test {
  font-family: var(--ul-font-plate);
  font-size: clamp(1.5rem, 3.8vw, 2.375rem);
  font-weight: 700;
  color: var(--ul-heading);
}

@media (max-width: 767px) {
  .face__hero {
    grid-template-columns: minmax(0, 1fr);
  }

  .weight,
  .scale__row,
  .scale__head {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.375rem;
  }

  .scale__head span:last-child {
    display: none;
  }
}

/* --- form ----------------------------------------------------------------- */

.radii {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(7rem, 1fr));
  gap: 1.5rem 1rem;
}

.radii figure {
  margin: 0;
}

.radii__box {
  aspect-ratio: 1;
  border: 2px solid var(--ul-heading);
  background: var(--ul-surface);
}

.radii figcaption,
.shadows figcaption {
  display: grid;
  margin-top: 0.625rem;
  font-size: 0.875rem;
  color: var(--ul-text-soft);
}

.radii strong,
.shadows strong {
  color: var(--ul-heading);
}

.spacing {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.spacing li {
  display: grid;
  grid-template-columns: 8.5rem 5rem auto;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--ul-text-soft);
}

.spacing__bar {
  height: 0.75rem;
  border-radius: 2px;
  background: var(--ul-brand);
}

.shadows {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12rem, 1fr));
  gap: 2rem 1.5rem;
  padding: 2rem;
  border-radius: var(--ul-radius-card);
  background: var(--ul-surface-alt);
}

.shadows__card {
  margin: 0;
  padding: 1.25rem;
  min-height: 7rem;
  display: flex;
  align-items: flex-end;
  border-radius: var(--ul-radius-card);
  background: var(--ul-surface);
}

.shadows__card code {
  font-size: 0.75rem;
  color: var(--ul-text-muted);
}

.example-label {
  color: var(--ul-text-muted);
  font-size: 0.8125rem;
}

.block > .example-label {
  margin-top: 1.5rem;
}

.components {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  gap: 1.5rem;
  margin-top: 0.75rem;
  padding: clamp(1.25rem, 3vw, 2.5rem);
  border-radius: var(--ul-radius-card);
  background: var(--ul-surface-alt);
}

.components__buttons {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ul-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 1.75rem;
  border: 1px solid transparent;
  border-radius: var(--ul-radius-pill);
  font: var(--ul-type-button);
  color: var(--ul-on-brand);
  cursor: pointer;
  transition: transform var(--ul-press-duration) var(--ul-ease), background-color var(--ul-duration) var(--ul-ease);
}

.ul-button:active {
  transform: scale(0.97);
}

.ul-button--primary {
  background: var(--ul-action);
}

.ul-button--ghost {
  background: var(--ul-surface);
  border-color: var(--ul-border);
  color: var(--ul-text);
}

.ul-button--ghost:hover {
  border-color: var(--ul-heading);
  color: var(--ul-heading);
}

.ul-button--danger {
  background: var(--ul-danger);
}

.ul-button--light {
  background: var(--ul-paper);
  color: var(--ul-ink);
}

.ul-button:disabled {
  background: var(--ul-surface);
  color: var(--ul-text-muted);
  cursor: not-allowed;
  transform: none;
}

.game-card {
  display: grid;
  align-content: start;
  gap: 0.375rem;
  padding: 1.75rem;
  border-radius: var(--ul-radius-card);
  background: var(--ul-moss);
  color: var(--ul-paper);
  box-shadow: var(--ul-shadow-raise);
}

.game-card__date {
  font-weight: 500;
  font-size: 0.875rem;
  opacity: 0.92;
}

.game-card__title {
  font-family: var(--ul-font-plate);
  font-weight: 700;
  font-size: clamp(1.875rem, 3.5vw, 2.375rem);
  line-height: 1.05;
  color: var(--ul-paper);
  font-variant-numeric: tabular-nums;
}

.game-card__price {
  margin-bottom: 1rem;
  font-weight: 600;
}

.game-card .ul-button {
  justify-self: start;
}

.ul-field {
  display: grid;
  align-content: start;
  gap: 0.5rem;
}

.ul-field label {
  font: var(--ul-type-label);
  color: var(--ul-heading);
}

.ul-field input {
  min-height: 3.25rem;
  padding: 0.875rem 1.125rem;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
  color: var(--ul-text);
  font: inherit;
}

.ul-field input::placeholder {
  color: var(--ul-text-muted);
}

.ul-field input:focus-visible {
  border-color: var(--ul-brand);
  outline-width: 2px;
  outline-offset: 1px;
}

.ul-field__hint {
  font: var(--ul-type-caption);
  color: var(--ul-text-muted);
}

@media (max-width: 767px) {
  .components {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* --- pictures (road signs & instrument cluster) --------------------------- */

.mosaic {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 0.875rem;
  margin-top: 2.5rem;
}

.sign-tile {
  margin: 0;
  padding: 1.25rem 1rem 0.875rem;
  display: grid;
  place-items: center;
  gap: 0.75rem;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
}

.sign-tile img {
  width: 5.5rem;
  height: 5.5rem;
  object-fit: contain;
  filter: drop-shadow(var(--ul-shadow-sign-drop));
}

.sign-tile figcaption {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--ul-text-muted);
}

.dodont {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem 3rem;
  margin-top: 2.5rem;
}

.dodont__title {
  font-size: 1.125rem;
}

.checklist {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.checklist li {
  display: flex;
  gap: 0.625rem;
  align-items: baseline;
}

.checklist .icon {
  translate: 0 0.2em;
}

.checklist--check .icon {
  color: var(--ul-ok-strong);
}

.checklist--x .icon {
  color: var(--ul-danger-strong);
}

.hall {
  position: relative;
  display: grid;
  align-content: center;
  aspect-ratio: 16 / 9;
  padding: 6%;
  border-radius: var(--ul-radius-card);
  background:
    radial-gradient(circle at 20% 25%, rgb(140 203 234 / 14%), transparent 55%),
    var(--ul-night-cluster);
  border: 1px solid var(--ul-night-stone);
  overflow: hidden;
  color: var(--ul-road-line);
}

.hall__mark {
  position: absolute;
  right: 4%;
  top: 50%;
  translate: 0 -50%;
  height: 74%;
  width: auto;
  opacity: 0.12;
}

.hall__round {
  font-family: var(--ul-font-plate);
  font-weight: 600;
  font-size: clamp(1rem, 2.2vw, 1.5rem);
  letter-spacing: 0.02em;
  color: var(--ul-glacier-sky);
}

.hall__title {
  margin-top: 0.5rem;
  font-family: var(--ul-font-cluster);
  font-weight: 700;
  font-size: clamp(3.5rem, 12vw, 8.5rem);
  line-height: 0.92;
  font-variant-numeric: tabular-nums;
}

.social-card {
  width: 100%;
  height: auto;
  border-radius: var(--ul-radius-md);
  border: 1px solid var(--ul-border);
}

@media (max-width: 767px) {
  .dodont {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

.chapter > .table-wrap {
  margin-top: 2.5rem;
}

.table--api th {
  width: 15rem;
  font-family: var(--mono);
  font-size: 0.875rem;
}

.table--api td {
  color: var(--ul-text-soft);
}

@media (max-width: 767px) {
  .table--api thead {
    display: none;
  }

  .table--api tr {
    display: grid;
    border-bottom: 1px solid var(--ul-border);
  }

  .table--api tr:last-child {
    border-bottom: 0;
  }

  .table--api th,
  .table--api td {
    width: auto;
    border-bottom: 0;
  }

  .table--api td {
    padding-top: 0;
  }
}

.snippets {
  display: grid;
  gap: 1.25rem;
}

.snippet {
  margin: 0;
  border: 1px solid var(--ul-border);
  border-radius: var(--ul-radius-md);
  background: var(--ul-surface);
  overflow: hidden;
}

.snippet figcaption {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.125rem;
  border-bottom: 1px solid var(--ul-border);
  background: var(--ul-surface-alt);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ul-heading);
}

.snippet figcaption .copy {
  margin: 0;
  font-weight: 400;
  color: var(--ul-text-muted);
}

.snippet figcaption .copy__icon {
  opacity: 1;
}

.snippet pre {
  margin: 0;
  padding: 1.125rem;
  overflow-x: auto;
  line-height: 1.6;
  color: var(--ul-text);
}

.pattern {
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  border-radius: var(--ul-radius-md);
  background: var(--ul-ink);
  color: var(--ul-road-line);
  overflow-x: auto;
}

.pattern code {
  font-size: clamp(0.8125rem, 1.6vw, 1.0625rem);
  white-space: nowrap;
}

.pattern em {
  font-style: normal;
  color: var(--ul-glacier-sky);
}

.pattern__parts {
  display: grid;
  gap: 0.5rem;
  margin: 1rem 0 0;
}

.pattern__parts div {
  display: grid;
  grid-template-columns: 7rem minmax(0, 1fr);
  font-size: 0.9375rem;
}

.pattern__parts dt {
  font-family: var(--mono);
  color: var(--ul-brand-strong);
}

.pattern__parts dd {
  margin: 0;
  color: var(--ul-text-soft);
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .ul-button:active {
    transform: none;
  }
}