/* Developer pages, in the homepage system: IBM Plex Sans for prose and IBM Plex Mono for code (faces declared in
   /shared/site-nav.css), near-black on off-white, hairline rules, one red accent (the current page or section in
   the side navigation, link hover, and focus). Layout: a side navigation beside the document from 1024px up;
   below that the navigation sits under the page heading (on /developers/) or after the document (generated pages). */
:root {
  color-scheme: light;
  --bg: #f6f5f1;
  --paper: #f6f5f1;
  --soft: #ecebe5;
  --ink: #191918;
  --body: #3d3d38;
  --muted: #62625b;
  --link: #191918;
  --accent: #ae0808;
  --rule: #d5d4cd;
  --rule-strong: #84837b;
  --code-bg: #ecebe5;
  --code-ink: #191918;
  --on-ink: #f6f5f1;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #171918;
    --paper: #171918;
    --soft: #202321;
    --ink: #eeeee7;
    --body: #d6d6cf;
    --muted: #adaea5;
    --link: #eeeee7;
    --accent: #d87067;
    --rule: #3c403a;
    --rule-strong: #74786f;
    --code-bg: #202321;
    --code-ink: #eeeee7;
    --on-ink: #171918;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #171918;
  --paper: #171918;
  --soft: #202321;
  --ink: #eeeee7;
  --body: #d6d6cf;
  --muted: #adaea5;
  --link: #eeeee7;
  --accent: #d87067;
  --rule: #3c403a;
  --rule-strong: #74786f;
  --code-bg: #202321;
  --code-ink: #eeeee7;
  --on-ink: #171918;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

/* ---------------------------------------------------------------- layout */

/* The homepage's 1120px column (gutters from /shared/site-nav.css), so text lines up under the logo. */
.dev-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  width: min(100% - 2 * var(--unm-gutter, 16px), var(--unm-wrap, 1120px));
  margin: 0 auto;
  padding: clamp(32px, 6vw, 72px) 0 32px;
}

.doc {
  min-width: 0;
}

@media (min-width: 1024px) {
  .dev-layout {
    grid-template-columns: 200px minmax(0, 1fr);
    grid-template-areas: "nav head" "nav doc";
    grid-template-rows: auto 1fr;
    column-gap: 56px;
  }

  .dev-head {
    grid-area: head;
  }

  .doc {
    grid-area: doc;
  }

  .dev-nav {
    grid-area: nav;
    position: sticky;
    top: 88px;
    align-self: start;
    max-height: calc(100vh - 104px);
    overflow-y: auto;
  }
}

/* In-page targets clear the sticky 64px site bar. */
:where(.dev-layout) [id] {
  scroll-margin-top: 80px;
}

.doc > section + section {
  margin-top: clamp(48px, 6vw, 72px);
  padding-top: clamp(32px, 4vw, 44px);
  border-top: 1px solid var(--rule);
}

/* ---------------------------------------------------------------- side navigation */

.dev-nav {
  font-size: 0.875rem;
  line-height: 1.4;
}

.dev-nav-group + .dev-nav-group {
  margin-top: 20px;
}

.dev-nav-title {
  margin: 0 0 6px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.dev-layout .dev-nav ul {
  max-width: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dev-layout .dev-nav li + li {
  margin-top: 0;
}

.dev-layout .dev-nav a {
  display: block;
  padding: 5px 0 5px 12px;
  border-left: 2px solid var(--rule);
  color: var(--body);
  text-decoration: none;
}

.dev-layout .dev-nav a:hover {
  border-left-color: var(--rule-strong);
  color: var(--ink);
}

.dev-layout .dev-nav a.is-current,
.dev-layout .dev-nav a[aria-current="page"] {
  border-left-color: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

@media (max-width: 1023px) {
  .dev-nav {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px 24px;
    margin: 0 0 40px;
    padding: 20px 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
  }

  .dev-nav-group + .dev-nav-group {
    margin-top: 0;
  }

  .dev-layout .dev-nav a {
    padding-block: 7px;
  }

  /* generated pages put the navigation after the document */
  .doc + .dev-nav {
    margin: 56px 0 0;
  }
}

@media (min-width: 600px) and (max-width: 1023px) {
  .dev-nav {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

:where(.dev-layout) h1,
:where(.dev-layout) h2,
:where(.dev-layout) h3,
:where(.dev-layout) h4 {
  color: var(--ink);
  font-family: var(--sans);
  font-weight: 400;
  text-wrap: balance;
}

:where(.dev-layout) h1 {
  max-width: 820px;
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

:where(.dev-layout) h2 {
  margin: 2.6rem 0 1rem;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  letter-spacing: -0.005em;
  line-height: 1.2;
}

:where(.dev-layout) section > h2:first-child {
  margin-top: 0;
}

:where(.dev-layout) h3 {
  margin: 2.2rem 0 0.7rem;
  font-size: 1.25rem;
  line-height: 1.3;
}

:where(.dev-layout) h4 {
  margin: 1.6rem 0 0.5rem;
  font-size: 1.05rem;
  font-weight: 600;
}

:where(.dev-layout) p,
:where(.dev-layout) li,
:where(.dev-layout) dd {
  color: var(--body);
  overflow-wrap: break-word;
}

:where(.dev-layout) p {
  max-width: 70ch;
  margin: 0 0 1rem;
}

.lede {
  max-width: 64ch;
  margin-bottom: 2rem;
  font-size: clamp(1.02rem, 1.4vw, 1.15rem);
}

.muted,
.generated-note {
  color: var(--muted);
  font-size: 0.9rem;
}

:where(.dev-layout) a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

:where(.dev-layout) a:hover {
  color: var(--accent);
}

:where(.dev-layout) a:focus-visible,
:where(.dev-layout) button:focus-visible,
:where(.dev-layout) summary:focus-visible,
:where(.dev-layout) select:focus-visible,
:where(.dev-layout) input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

:where(.dev-layout) ul,
:where(.dev-layout) ol {
  max-width: 74ch;
  margin: 0 0 1rem;
  padding-left: 1.4rem;
}

:where(.dev-layout) li + li {
  margin-top: 0.35rem;
}

:where(.dev-layout) strong {
  color: var(--ink);
  font-weight: 600;
}

.crumbs {
  margin: 0 0 1.2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

/* "On this page" lists of the generated pages */
.toc {
  margin: 1.8rem 0 2.4rem;
  padding: 16px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.dev-layout .toc ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 24px;
  max-width: none;
  margin: 0;
  padding: 0;
  list-style: none;
}

.dev-layout .toc li + li {
  margin-top: 0;
}

.toc-title {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

/* ---------------------------------------------------------------- overview diagram */

.flow {
  margin: 0 0 1rem;
}

.flow-caption {
  margin: 0 0 12px;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.flow-grid {
  display: grid;
  gap: 28px;
}

.flow-col {
  position: relative;
  padding: 14px 16px 6px;
  border: 1px solid var(--rule-strong);
  background: var(--paper);
}

.flow-col + .flow-col::before {
  position: absolute;
  top: -26px;
  left: 50%;
  color: var(--muted);
  font-size: 1rem;
  content: "↓";
  transform: translateX(-50%);
}

@media (min-width: 760px) {
  .flow-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .flow-col + .flow-col::before {
    top: 50%;
    left: -21px;
    content: "→";
    transform: translateY(-50%);
  }
}

.flow-head {
  margin: 0 0 6px;
  color: var(--ink);
  font-weight: 600;
}

.dev-layout .flow-col ul {
  margin: 0 0 8px;
  padding: 0;
  list-style: none;
}

.dev-layout .flow-col li {
  margin: 0;
  font-size: 0.92rem;
}

.flow-note {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

.dev-layout .flow-base {
  max-width: none;
  margin: 12px 0 0;
  padding: 10px 16px;
  border: 1px dashed var(--rule-strong);
  font-size: 0.92rem;
}

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

:where(.dev-layout) code {
  padding: 0.08em 0.32em;
  background: var(--soft);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.86em;
  overflow-wrap: anywhere;
}

:where(.dev-layout) pre {
  margin: 0 0 1.2rem;
  padding: 16px 18px;
  overflow-x: auto;
  border: 1px solid var(--rule);
  background: var(--code-bg);
  color: var(--code-ink);
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  tab-size: 2;
}

:where(.dev-layout) pre code {
  padding: 0;
  background: none;
  color: inherit;
  font-size: inherit;
  overflow-wrap: normal;
}

.code {
  margin: 0 0 1.4rem;
  border: 1px solid var(--rule);
  background: var(--code-bg);
}

.code-head {
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  min-height: 38px;
  padding: 4px 6px 4px 14px;
  border-bottom: 1px solid var(--rule);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.75rem;
}

.dev-layout .code pre {
  margin: 0;
  border: 0;
}

.dev-layout .code-tall pre {
  max-height: 440px;
  overflow: auto;
}

/* long JSON strings (card detail) wrap instead of scrolling sideways */
.dev-layout .code-wrap pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.code-caption {
  margin: 1.4rem 0 0.5rem;
}

.copy {
  flex: none;
  min-height: 30px;
  padding: 2px 10px;
  border: 1px solid var(--rule-strong);
  background: var(--bg);
  color: var(--ink);
  font: 600 0.75rem var(--sans);
  cursor: pointer;
}

.copy:hover {
  border-color: var(--ink);
  text-decoration: underline;
}

details.code-details {
  margin: 0 0 1.4rem;
}

details.code-details > summary,
.vectors-detail > summary,
.try-json > summary {
  padding: 10px 0;
  color: var(--link);
  font-weight: 600;
  cursor: pointer;
}

details.code-details > summary {
  font-weight: 400;
}

details.code-details[open] > summary {
  margin-bottom: 0.4rem;
}

/* ---------------------------------------------------------------- tables and definition lists */

.table-wrap {
  max-width: 100%;
  margin: 0 0 1.4rem;
  overflow-x: auto;
  border-top: 1px solid var(--rule-strong);
  border-bottom: 1px solid var(--rule);
}

:where(.dev-layout) table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  line-height: 1.45;
}

:where(.dev-layout) th,
:where(.dev-layout) td {
  padding: 9px 12px 9px 0;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}

:where(.dev-layout) th + th,
:where(.dev-layout) td + td {
  padding-left: 12px;
}

:where(.dev-layout) th {
  color: var(--ink);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

:where(.dev-layout) tbody tr:last-child td {
  border-bottom: 0;
}

:where(.dev-layout) td {
  color: var(--body);
}

table.fields td:first-child {
  white-space: nowrap;
}

table.compact {
  width: auto;
  min-width: 280px;
}

/* the models guide's feature tables keep their columns readable and scroll sideways inside .table-wrap */
:where(.dev-layout) table.features {
  min-width: 980px;
  font-size: 0.84rem;
}

table.features td:first-child code {
  white-space: nowrap;
  overflow-wrap: normal;
}

table.features td:nth-child(6) {
  min-width: 9rem;
}

table.features td:nth-child(5) {
  min-width: 260px;
}

table.features td:last-child {
  font-family: var(--mono);
  font-size: 0.82rem;
  text-align: right;
  white-space: nowrap;
}

.code-system {
  color: var(--muted);
  font-weight: 400;
}

.codes {
  font-family: var(--mono);
  font-size: 0.8rem;
}

.more-codes summary {
  color: var(--link);
  font-size: 0.8rem;
  cursor: pointer;
}

.facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  max-width: 820px;
  margin: 0 0 1.4rem;
  border-top: 1px solid var(--rule);
  font-size: 0.92rem;
}

.facts dt {
  padding: 9px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.facts dd {
  margin: 0;
  padding: 2px 0 9px;
  border-bottom: 1px solid var(--rule);
}

@media (min-width: 600px) {
  .facts {
    grid-template-columns: 9.5rem minmax(0, 1fr);
  }

  .facts dt {
    padding: 9px 16px 9px 0;
    border-bottom: 1px solid var(--rule);
  }

  .facts dd {
    padding: 9px 0;
  }
}

.hash {
  font-size: 0.78em;
}

.model-entry + .model-entry {
  margin-top: 2rem;
}

.model-entry h3 {
  margin-top: 1.6rem;
}

.model-id {
  margin-left: 6px;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.vectors-detail {
  margin: 0.4rem 0 1.4rem;
  border-bottom: 1px solid var(--rule);
}

/* ---------------------------------------------------------------- buttons and forms */

.actions {
  margin: 0.4rem 0 1.4rem;
}

.button {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 16px;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--on-ink);
  font: 600 0.88rem var(--sans);
  text-decoration: none;
  cursor: pointer;
}

.button:hover {
  color: var(--on-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.field {
  display: block;
  min-width: 0;
}

.field > span {
  display: block;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.8rem;
}

:where(.dev-layout) select,
:where(.dev-layout) input[type="date"] {
  width: 100%;
  min-height: 44px;
  padding: 6px 10px;
  border: 1px solid var(--rule-strong);
  border-radius: 0;
  background: var(--bg);
  color: var(--ink);
  font: inherit;
  font-size: 0.95rem;
}

/* ---------------------------------------------------------------- try the scorer */

.try {
  margin: 1.2rem 0 0;
  padding: 16px 0;
  border-top: 1px solid var(--rule-strong);
}

.try-fields {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px 16px;
}

@media (min-width: 600px) {
  .try-fields {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr) minmax(0, 1fr);
  }
}

.try-unavailable {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
  margin: 14px 0 0;
  padding: 0;
  border: 0;
}

.try-unavailable legend {
  width: 100%;
  margin-bottom: 4px;
  padding: 0;
  color: var(--muted);
  font-size: 0.8rem;
}

.check {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  min-height: 32px;
  font-size: 0.9rem;
}

.check input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--ink);
}

.try-out {
  border-top: 1px solid var(--rule);
}

.try-out:empty {
  border-top: 0;
}

.try-scenario {
  margin: 14px 0 4px;
  color: var(--muted);
  font-size: 0.9rem;
}

.try-result {
  margin: 0 0 6px;
  color: var(--ink);
  font-size: 1.1rem;
}

.try-check {
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

.try-check.is-different {
  color: var(--accent);
}

.try-out table td:nth-child(3) {
  font-family: var(--mono);
  font-size: 0.82rem;
  text-align: right;
  white-space: nowrap;
}

.try-out .table-wrap {
  margin-bottom: 0.6rem;
}

.dev-layout .try-json pre {
  max-height: 420px;
  overflow: auto;
}

/* ---------------------------------------------------------------- live CDS request */

.live {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 16px;
  align-items: end;
  margin: 0.8rem 0 0.6rem;
}

.live .field {
  flex: 1 1 260px;
  max-width: 360px;
}

.live-status {
  font-size: 0.9rem;
}

.live-status:empty {
  display: none;
}

@media (max-width: 700px) {
  :where(.dev-layout) th,
  :where(.dev-layout) td {
    padding-top: 8px;
    padding-bottom: 8px;
  }
}

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

@media print {
  .dev-nav,
  .copy,
  .try,
  .try-out,
  .live {
    display: none;
  }

  body {
    background: #fff;
  }
}

/* code system URIs stay on one line; the table scrolls on narrow screens instead */
:where(.dev-layout) table.systems td:nth-child(2) code {
  white-space: nowrap;
}

.try-evidence span {
  display: block;
  white-space: nowrap;
}

.try-note {
  margin: 0 0 1rem;
  color: var(--muted);
  font-size: 0.86rem;
}

.dev-layout table.systems td:first-child {
  white-space: nowrap;
}

/* Field tables become one block per field on phones: the name, then its description */
@media (max-width: 599px) {
  .dev-layout table.fields thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
  }

  .dev-layout table.fields,
  .dev-layout table.fields tbody,
  .dev-layout table.fields tr,
  .dev-layout table.fields td {
    display: block;
    width: 100%;
  }

  .dev-layout table.fields tr {
    padding: 9px 0;
    border-bottom: 1px solid var(--rule);
  }

  .dev-layout table.fields tbody tr:last-child {
    border-bottom: 0;
  }

  .dev-layout table.fields td,
  .dev-layout table.fields td + td {
    padding: 2px 0;
    border: 0;
    white-space: normal;
  }

  .dev-layout table.fields td[data-label]::before {
    color: var(--muted);
    content: attr(data-label) ": ";
  }
}