/*
  Knowledge base: the two-column article shell, the section sidebar, the
  search box and its results, article furniture (breadcrumbs, applies-to
  chips, on-this-page list, pager), figures, and glossary term tooltips.
  Shares every token with site.css.
*/

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

.kb {
  display: grid;
  grid-template-columns: 264px minmax(0, 1fr);
  gap: 52px;
  align-items: start;
  padding-block: 36px 90px;
  position: relative;
  z-index: 2;
}

.kb__side {
  position: sticky;
  top: 80px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  scrollbar-width: thin;
  padding-right: 6px;
}

.kb__browse > summary {
  display: none;
}

.kb__main {
  min-width: 0;
}

/* ---------- sidebar navigation ---------- */

.kbnav {
  margin-top: 18px;
  font-size: 13.5px;
}

.kbnav__home {
  display: block;
  padding: 7px 10px;
  margin-bottom: 8px;
  border-radius: 8px;
  color: var(--ink-3);
  font-family: var(--display);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.kbnav__home:hover {
  background: rgba(107, 99, 148, 0.14);
  color: var(--gold-pale);
}

.kbnav__sec {
  border-top: 1px solid var(--line-soft);
}

.kbnav__sec > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  color: var(--ink-2);
  font-weight: 500;
}

.kbnav__sec > summary::-webkit-details-marker {
  display: none;
}

.kbnav__sec > summary::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 140ms ease;
  flex: none;
}

.kbnav__sec[open] > summary::after {
  transform: rotate(45deg);
}

.kbnav__sec > summary a {
  color: inherit;
}

.kbnav__sec > summary:hover a {
  color: var(--gold-pale);
}

.kbnav__sec ol {
  list-style: none;
  margin: 0 0 8px;
  padding: 0 0 0 6px;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.kbnav__sec ol a {
  display: block;
  padding: 5px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 6px 6px 0;
  color: var(--ink-4);
  font-size: 13px;
  line-height: 1.4;
}

.kbnav__sec ol a:hover {
  background: rgba(107, 99, 148, 0.14);
  color: var(--gold-pale);
}

.kbnav__sec ol a.is-current {
  border-left-color: var(--gold);
  background: rgba(212, 171, 58, 0.08);
  color: var(--gold-pale);
}

/* ---------- search ---------- */

.kbsearch {
  position: relative;
}

.kbsearch__field {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 0 10px 0 12px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: rgba(13, 11, 28, 0.8);
  color: var(--muted);
}

.kbsearch__field:focus-within {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 171, 58, 0.14);
  color: var(--gold-lit);
}

.kbsearch__field input {
  flex: 1;
  min-width: 0;
  padding: 10px 0;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 14px;
  outline: none;
}

.kbsearch__field input::-webkit-search-cancel-button {
  -webkit-appearance: none;
}

.kbsearch__field input::placeholder {
  color: var(--muted);
}

.kbsearch__field kbd {
  font-family: var(--mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 5px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: rgba(48, 40, 83, 0.4);
}

.kbsearch--large .kbsearch__field {
  padding-left: 16px;
  border-radius: 14px;
  background: var(--panel-lift);
  box-shadow: var(--shadow-drop);
}

.kbsearch--large .kbsearch__field input {
  padding: 16px 0;
  font-size: 17px;
}

.kbsearch__results {
  position: absolute;
  left: 0;
  right: 0;
  top: calc(100% + 8px);
  z-index: 45;
  max-height: min(70vh, 560px);
  overflow-y: auto;
  border-radius: 12px;
  border: 1px solid rgba(107, 99, 148, 0.35);
  background: var(--panel-lift);
  box-shadow: var(--shadow-drop);
  backdrop-filter: blur(14px);
  padding: 6px;
  animation: menu-in 140ms cubic-bezier(0.2, 0.9, 0.25, 1);
}

.kbsearch--large .kbsearch__results {
  text-align: left;
}

.kbsearch__results[hidden] {
  display: none;
}

.kbresult {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  color: var(--ink);
}

.kbresult:hover,
.kbresult.is-active {
  background: rgba(107, 99, 148, 0.2);
  color: var(--ink);
}

.kbresult__crumb {
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.kbresult__title {
  display: block;
  font-weight: 600;
  font-size: 14.5px;
  color: var(--ink-bright);
  margin-top: 2px;
}

.kbresult__title small {
  font-weight: 400;
  color: var(--ink-4);
}

.kbresult__snip {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-4);
}

.kbresult mark,
.kbsearch__empty mark {
  background: rgba(212, 171, 58, 0.22);
  color: var(--gold-pale);
  border-radius: 3px;
  padding: 0 1px;
}

.kbsearch__empty,
.kbsearch__hint {
  padding: 12px 14px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- article furniture ---------- */

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 18px;
}

.crumbs a {
  color: var(--ink-4);
}

.crumbs a:hover {
  color: var(--gold-pale);
}

.crumbs span[aria-current] {
  color: var(--ink-3);
}

.kbarticle__head {
  padding-bottom: 22px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line-soft);
}

.kbarticle__head h1 {
  font-size: clamp(28px, 3.6vw, 40px);
  line-height: 1.1;
  background: var(--gold-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-wrap: balance;
}

.kbarticle__lede {
  font-family: var(--serif);
  font-size: 17.5px !important;
  line-height: 1.55 !important;
  color: var(--ink-3);
  margin: 14px 0 0 !important;
}

.applies {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 14px;
}

.applies__chip {
  font-size: 11px;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-3);
  background: rgba(48, 40, 83, 0.4);
}

.applies__chip--desktop {
  border-color: rgba(212, 171, 58, 0.4);
  color: var(--gold-pale);
}

.applies__chip--android {
  border-color: rgba(120, 200, 140, 0.4);
  color: #bfe6c8;
}

.applies__chip--server {
  border-color: rgba(224, 112, 58, 0.4);
  color: #f0b899;
}

.kbtoc {
  margin: 22px 0 8px;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--line-soft);
  background: var(--panel-flat);
}

.kbtoc .eyebrow {
  font-size: 10px;
  margin-bottom: 8px;
}

.kbtoc ol {
  margin: 0;
  padding-left: 18px;
  columns: 2;
  column-gap: 28px;
  font-size: 14px;
  line-height: 1.5;
}

.kbtoc li {
  margin: 3px 0;
  break-inside: avoid;
}

.kbtoc a {
  color: var(--ink-3);
}

.kbtoc a:hover {
  color: var(--gold-pale);
}

.kbarticle > section,
.kbarticle > h2 {
  scroll-margin-top: 92px;
}

.kbarticle h2 {
  margin-top: 40px;
  font-size: 24px;
  padding-top: 8px;
}

.kbarticle h3 {
  margin-top: 26px;
}

.kbarticle h4 {
  font-family: var(--sans);
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-bright);
  margin: 22px 0 6px;
}

.kbarticle table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 14px;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
}

.kbarticle th,
.kbarticle td {
  padding: 9px 12px;
  text-align: left;
  vertical-align: top;
  border-top: 1px solid var(--line-soft);
  line-height: 1.5;
}

.kbarticle thead th {
  border-top: 0;
  background: rgba(13, 11, 28, 0.6);
  font-family: var(--display);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-lit);
}

.kbarticle td code,
.kbarticle th code {
  white-space: nowrap;
}

.kbarticle .steps {
  margin: 18px 0;
}

.kbarticle .step p {
  margin: 5px 0 0;
}

.kbarticle__foot {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.kbarticle__foot p {
  margin: 0;
}

/* Screenshots inside articles */

.kbfig {
  margin: 22px 0;
  padding: 8px;
  border-radius: 12px;
  border: 1px solid rgba(212, 171, 58, 0.22);
  background: linear-gradient(180deg, rgba(48, 40, 83, 0.45), rgba(13, 11, 28, 0.75));
  box-shadow: 0 16px 40px rgba(4, 2, 12, 0.5);
}

.kbfig img {
  display: block;
  width: 100%;
  border-radius: 7px;
  border: 1px solid var(--line);
}

.kbfig figcaption {
  padding: 10px 6px 2px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--muted);
}

.kbfig--phone {
  max-width: 300px;
}

.kbfig--pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  gap: 8px;
  align-items: start;
}

.kbfig--pair figcaption {
  grid-column: 1 / -1;
}

.kbfig--row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.kbfig--row img {
  flex: 1 1 200px;
  width: auto;
  max-width: 260px;
}

.kbfig--row figcaption {
  flex-basis: 100%;
}

/* Pager */

.kbpager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 28px;
}

.kbpager a {
  display: block;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel-flat);
  color: var(--ink-2);
  font-weight: 500;
  font-size: 14.5px;
  line-height: 1.35;
}

.kbpager a:hover {
  border-color: rgba(212, 171, 58, 0.45);
  color: var(--gold-pale);
}

.kbpager a small {
  display: block;
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 4px;
}

.kbpager__next {
  text-align: right;
}

/* Section hub list */

.kbindex {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.kbindex__item {
  margin: 0;
  padding: 16px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--panel-flat);
}

.kbindex__item:hover {
  border-color: rgba(212, 171, 58, 0.4);
}

.kbindex__item > a {
  display: block;
  color: var(--ink-2);
}

.kbindex__item b {
  display: block;
  color: var(--ink-bright);
  font-size: 16px;
}

.kbindex__item span {
  display: block;
  margin-top: 4px;
  font-size: 14px;
  color: var(--ink-4);
  line-height: 1.5;
}

.kbindex__item .applies {
  margin-top: 10px;
}

/* ---------- home page ---------- */

/* Above the sections that follow, which are stacking contexts of their own. */
.pagehead[data-kb-home] .pagehead__inner {
  z-index: 3;
}

.kbhome {
  padding-block: 40px 20px;
  position: relative;
  z-index: 2;
}

.kbhome__search {
  max-width: 720px;
  margin: 28px auto 0;
}

.kbhome__paths {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 30px;
}

.kbpath {
  display: block;
  padding: 18px 20px;
  border-radius: 14px;
  border: 1px solid rgba(212, 171, 58, 0.3);
  background: var(--panel);
  color: var(--ink-2);
  box-shadow: var(--shadow-card);
}

.kbpath:hover {
  border-color: rgba(212, 171, 58, 0.55);
  color: var(--ink-2);
}

.kbpath b {
  display: block;
  font-family: var(--display);
  font-size: 15px;
  color: var(--gold-pale);
  margin-bottom: 4px;
}

.kbpath span {
  font-size: 13.5px;
  color: var(--ink-4);
  line-height: 1.5;
}

.kbcards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.kbcard {
  padding: 24px 24px 18px;
  border-radius: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
}

.kbcard__aud {
  font-family: var(--display);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 8px;
}

.kbcard h3 {
  font-size: 19px;
  margin-bottom: 8px;
}

.kbcard h3 a {
  color: var(--ink-bright);
}

.kbcard h3 a:hover {
  color: var(--gold-pale);
}

.kbcard p {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-4);
  margin: 0 0 12px;
}

.kbcard ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.kbcard li a {
  display: block;
  padding: 7px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--ink-3);
}

.kbcard li a:hover {
  color: var(--gold-pale);
}

.kbcard__more a {
  color: var(--gold) !important;
  font-size: 12.5px !important;
}

/* ---------- glossary ---------- */

.term {
  cursor: help;
  border-bottom: 1px dotted rgba(212, 171, 58, 0.7);
  text-decoration: none;
  color: inherit;
}

.term:hover,
.term:focus-visible,
.term[aria-expanded="true"] {
  color: var(--gold-pale);
  border-bottom-style: solid;
}

.termtip {
  position: absolute;
  z-index: 60;
  max-width: 320px;
  padding: 12px 14px 10px;
  border-radius: 10px;
  border: 1px solid rgba(212, 171, 58, 0.4);
  background: var(--panel-lift);
  box-shadow: var(--shadow-drop);
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  animation: menu-in 120ms ease-out;
}

.termtip[hidden] {
  display: none;
}

.termtip b {
  display: block;
  font-family: var(--display);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-lit);
  margin-bottom: 4px;
}

.termtip a {
  display: inline-block;
  margin-top: 6px;
  font-size: 12px;
}

.glossary__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 18px 0 8px;
}

.glossary__jump a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  padding: 4px 8px;
  border-radius: 7px;
  border: 1px solid var(--line);
  font-family: var(--display);
  font-size: 12px;
  color: var(--ink-3);
}

.glossary__jump a:hover {
  border-color: var(--gold);
  color: var(--gold-pale);
}

.glossary {
  margin: 12px 0 0;
}

.glossary__entry {
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 92px;
}

.glossary__entry:target {
  background: rgba(212, 171, 58, 0.06);
  box-shadow: -14px 0 0 rgba(212, 171, 58, 0.06);
}

.glossary dt {
  font-weight: 600;
  color: var(--ink-bright);
  font-size: 15.5px;
}

.glossary dt small {
  display: block;
  font-weight: 400;
  font-size: 12px;
  color: var(--muted);
}

.glossary dd {
  margin: 5px 0 0;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--ink-3);
}

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

@media (max-width: 1040px) {
  .kb {
    grid-template-columns: minmax(0, 1fr);
    gap: 22px;
  }

  .kb__side {
    position: static;
    max-height: none;
    overflow: visible;
    padding-right: 0;
  }

  .kb__browse {
    margin-top: 12px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--panel-flat);
  }

  .kb__browse > summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 11px 14px;
    cursor: pointer;
    list-style: none;
    font-weight: 500;
    color: var(--ink-2);
  }

  .kb__browse > summary::-webkit-details-marker {
    display: none;
  }

  .kb__browse > summary::after {
    content: "+";
    color: var(--gold);
    font-size: 18px;
  }

  .kb__browse[open] > summary::after {
    content: "\2212";
  }

  .kbnav {
    margin: 0;
    padding: 0 10px 8px;
  }

  .kbhome__paths,
  .kbcards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .kbhome__paths,
  .kbcards {
    grid-template-columns: 1fr;
  }

  .kbtoc ol {
    columns: 1;
  }

  .kbpager {
    grid-template-columns: 1fr;
  }

  .kbpager__next {
    text-align: left;
  }

  .kbfig--pair {
    grid-template-columns: 1fr;
  }

  .kbfig--pair .kbfig__phone {
    max-width: 220px;
  }

  .kbarticle table {
    display: block;
    overflow-x: auto;
  }

  .termtip {
    max-width: calc(100vw - 32px);
  }

  .kbsearch__field kbd {
    display: none;
  }
}