/* Archivo, SIL Open Font License 1.1: fonts/OFL.txt. */
@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --red: #c8102e;
  --red-deep: #a00c24;
  --paper: #f7f6f2;
  --sheet: #fdfdfb;
  --ink: #16181b;
  --ink-soft: #4a4e54;
  --rule: #cfcdc5;
  --code: #ecebe5;
  --checker: #e3e1da;
  --sans: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gap: 1.5rem;
  color-scheme: light;
  scrollbar-color: var(--ink-soft) var(--paper);
}

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.5 var(--sans);
  font-variant-numeric: tabular-nums;
  caret-color: var(--red);
}

::selection {
  background: var(--red);
  color: #fff;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

code,
pre,
input[type="text"],
input[type="number"] {
  font-family: var(--mono);
}

canvas {
  image-rendering: pixelated;
  display: block;
}

:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 2px;
}

[hidden] {
  display: none !important;
}

/* Part-number band */

.band {
  background: var(--red);
  color: #fff;
}

.band ::selection {
  background: #fff;
  color: var(--red);
}

.band :focus-visible {
  outline-color: #fff;
}

.band-inner {
  max-width: 82rem;
  margin: 0 auto;
  padding: 1.25rem var(--gap) 1.1rem;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  column-gap: 2rem;
  row-gap: 0.25rem;
}

.band-title {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.band h1 {
  margin: 0;
  font-size: 2.75rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.version {
  margin: 0;
  font: 700 1rem/1 var(--mono);
}

.tagline {
  margin: 0;
  font-size: 1.125rem;
}

.links {
  display: flex;
  gap: 1.25rem;
  font-weight: 700;
}

/* Page */

main {
  max-width: 82rem;
  margin: 0 auto;
  padding: 1.5rem var(--gap) 3rem;
}

.status {
  margin: 0 0 0.75rem;
  color: var(--ink-soft);
  font-size: 0.875rem;
}

.status.is-error {
  color: var(--red);
  font-weight: 700;
  font-size: 1rem;
}

.seed-row {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  border-top: 2px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  background: var(--sheet);
}

.seed-label {
  padding: 0 1.25rem;
  font-weight: 700;
  font-size: 1.125rem;
  align-self: stretch;
  display: flex;
  align-items: center;
  border-right: 1px solid var(--rule);
}

.seed {
  width: 100%;
  min-width: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 1.75rem;
  padding: 0.6rem 1.25rem;
}

.seed:focus-visible {
  outline-offset: -2px;
}

.work {
  margin-top: 1.75rem;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(22rem, 1fr);
  gap: 2.5rem;
  align-items: start;
}

/* Parts table */

.group + .group {
  margin-top: 1.5rem;
}

.group-title,
.detail-name,
.install h2 {
  margin: 0;
  padding: 0.45rem 0;
  border-top: 2px solid var(--ink);
  font-size: 1rem;
  font-weight: 700;
}

.tiles {
  display: grid;
  grid-template-columns: repeat(var(--columns), minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
}

#tiles-users {
  --columns: 4;
}

#tiles-groups {
  --columns: 5;
}

.tile {
  appearance: none;
  border: 0;
  margin: 0;
  padding: 0;
  background: var(--sheet);
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  min-width: 0;
  outline: 1px solid var(--rule);
}

.tile:hover {
  background: #fff;
}

.tile:focus-visible {
  outline-offset: -2px;
  position: relative;
  z-index: 1;
}

.tile-frame {
  height: 7.5rem;
  display: grid;
  place-items: center;
  padding: 0.5rem;
}

.tile-plate {
  display: flex;
  flex-direction: column;
  padding: 0.4rem 0.6rem 0.5rem;
  border-top: 1px solid var(--rule);
}

.tile-name {
  font-weight: 700;
  font-size: 0.9375rem;
  overflow-wrap: anywhere;
}

.tile-kind {
  font-weight: 400;
}

.tile-meta {
  font-size: 0.8125rem;
  color: var(--ink-soft);
}

.tile[aria-pressed="true"] {
  box-shadow: inset 0 0 0 2px var(--red);
}

.tile[aria-pressed="true"] .tile-plate {
  background: var(--red);
  border-top-color: var(--red);
  color: #fff;
}

.tile[aria-pressed="true"] .tile-meta {
  color: #fff;
}

.render-error {
  margin: 0;
  color: var(--red);
  font-size: 0.8125rem;
  font-weight: 700;
}

/* Detail */

.detail {
  scroll-margin-top: 1rem;
}

.detail-name code {
  font-size: 1.5rem;
}

.detail-kind {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 1.5rem;
}

.ballmap {
  --plate: 0px;
  --cell: 16px;
  --margin: 8px;
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1.5rem var(--plate);
  grid-template-rows: 1.25rem var(--plate);
  font: 400 min(0.6875rem, calc(var(--cell) - 2px))/1 var(--mono);
  color: var(--ink-soft);
}

.ruler {
  display: flex;
}

.ruler span {
  flex: 0 0 var(--cell);
  display: grid;
  place-items: center;
  white-space: nowrap;
}

.ruler-cols {
  grid-area: 1 / 2;
  padding-left: var(--margin);
  border-bottom: 1px solid var(--ink);
}

.ruler-rows {
  grid-area: 2 / 1;
  flex-direction: column;
  padding-top: var(--margin);
  border-right: 1px solid var(--ink);
}

.ballmap.is-dense .ruler span,
.ballmap.is-sparse .ruler-cols span:nth-child(even) {
  visibility: hidden;
}

.plate {
  grid-area: 2 / 2;
  outline: 1px solid var(--ink);
}

.ballmap.is-transparent .plate {
  /* The transparency checker: tells transparent pixels from paper-coloured ones. */
  background: conic-gradient(var(--checker) 25%, var(--sheet) 0 50%, var(--checker) 0 75%, var(--sheet) 0) 0 0 / 16px 16px;
}

.equation {
  margin: 0.75rem 0 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.25rem 1rem;
  font-family: var(--mono);
  font-size: 0.875rem;
}

.size {
  font-weight: 700;
}

.conditions {
  margin-top: 1.5rem;
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 0.9375rem;
}

.conditions caption {
  text-align: left;
  font-weight: 700;
  padding: 0.45rem 0;
  border-top: 2px solid var(--ink);
}

.conditions th,
.conditions td {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: middle;
}

.conditions th:first-child,
.conditions td:first-child {
  padding-left: 0;
}

.conditions thead th:first-child {
  width: 6.5rem;
}

.conditions thead th {
  font-size: 0.8125rem;
  color: var(--ink-soft);
  font-weight: 700;
  border-bottom-color: var(--ink);
}

.conditions .num {
  text-align: right;
  width: 2.5rem;
  font-family: var(--mono);
}

.value {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

input[type="range"] {
  flex: 1;
  min-width: 4rem;
  accent-color: var(--red);
}

.field {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--ink-soft);
  background: var(--sheet);
}

.field:focus-within {
  outline: 2px solid var(--red);
  outline-offset: 1px;
}

.field input {
  width: 3.25rem;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 0.9375rem;
  padding: 0.25rem 0.4rem;
  text-align: right;
}

.field input:focus-visible {
  outline: none;
}

.field input[aria-invalid="true"] {
  color: var(--red);
  text-decoration: underline wavy;
}

.unit {
  padding-right: 0.45rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 0.8125rem;
}

.check {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

.check input {
  width: 1.05rem;
  height: 1.05rem;
  margin: 0;
  accent-color: var(--red);
}

/* Code */

.code-block {
  margin-top: 1.25rem;
  background: var(--code);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.code-head {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  border-bottom: 1px solid var(--rule);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--ink-soft);
}

.code-head span {
  padding: 0.4rem 1rem;
}

.code-block pre {
  margin: 0;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

button.copy,
button.primary {
  appearance: none;
  font: 700 0.875rem/1 var(--sans);
  cursor: pointer;
  border-radius: 0;
}

button.copy {
  min-width: 6.5rem;
  border: 0;
  border-left: 1px solid var(--rule);
  background: transparent;
  color: var(--red);
  padding: 0.4rem 1rem;
}

button.copy:hover {
  background: var(--sheet);
}

button.copy:focus-visible {
  outline-offset: -2px;
}

button.primary {
  margin-top: 1.25rem;
  width: 100%;
  border: 0;
  background: var(--red);
  color: #fff;
  padding: 0.9rem 1rem;
  font-size: 1rem;
}

button.primary:hover {
  background: var(--red-deep);
}

button.primary:focus-visible {
  outline-color: var(--ink);
}

/* Install */

.install {
  margin-top: 3.5rem;
}

.install .code-block {
  margin-top: 0;
}

.install pre {
  font-size: 1rem;
  padding: 1rem;
}

/* Footer */

.colophon {
  max-width: 82rem;
  margin: 0 auto;
  padding: 0 var(--gap) 2rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.5rem 1.5rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.colophon::before {
  content: "";
  flex: 0 0 100%;
  border-top: 2px solid var(--ink);
  margin-bottom: 0.25rem;
}

.colophon p {
  margin: 0;
}

.colophon a {
  color: var(--ink);
  font-weight: 700;
}

@media (max-width: 66rem) {
  .band-inner {
    grid-template-columns: 1fr;
  }

  .links {
    margin-top: 0.5rem;
  }

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

@media (max-width: 30rem) {
  :root {
    --gap: 1rem;
  }

  .band h1 {
    font-size: 2.25rem;
  }

  .seed {
    font-size: 1.375rem;
  }

  #tiles-users,
  #tiles-groups {
    --columns: 3;
  }

  .tile-frame {
    padding: 0.25rem;
  }

  .tile-kind,
  .tile-meta {
    white-space: nowrap;
  }
}