/* Developer-specific structure layered over the copied docs template. */

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--dev-bg-primary);
}

body {
  min-width: 320px;
  color: var(--dev-text-primary);
  font-family: var(--dev-font-body);
  line-height: 1.6;
}

body.page-dev-layout :is(h1, h2, h3, h4, h5, h6, .dev-sidebar-heading) {
  font-family: var(--dev-font-display);
  font-weight: 400;
  -webkit-font-smoothing: subpixel-antialiased;
  -moz-osx-font-smoothing: auto;
}

.developer-site :focus-visible {
  outline: 3px solid var(--dev-focus);
  outline-offset: 3px;
}

.developer-site ::selection {
  color: var(--dev-text-primary);
  background: var(--dev-bg-quaternary);
}

.developer-brand-row {
  width: min(100%, 80rem);
  min-height: 4rem;
  justify-content: space-between;
  gap: 0.5rem;
  margin: 0 auto;
  padding: 0 0.25rem;
}

.developer-brand {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 0.25rem;
}

.developer-wordmark {
  display: inline-flex;
  align-items: center;
}

.developer-logo {
  display: block;
  width: 280px;
  max-height: 3.8rem;
  object-fit: contain;
}

.developer-mobile-menu {
  display: none;
}

.developer-mobile-menu > summary {
  min-height: 2.75rem;
  padding: 0.65rem;
  color: var(--dev-text-primary);
  cursor: pointer;
  list-style: none;
}

.developer-mobile-menu > summary::-webkit-details-marker { display: none; }

.developer-search-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  min-width: 18rem;
  min-height: 2.5rem;
  padding: 0.4rem 0.65rem;
  border: 1px solid var(--dev-border-color);
  border-radius: 0.5rem;
  color: var(--dev-text-secondary);
  background: var(--dev-bg-tertiary);
  font: inherit;
  line-height: 1.2;
  text-align: left;
  cursor: pointer;
}

.developer-search-trigger:hover {
  color: var(--dev-text-primary);
  background: var(--dev-bg-quaternary);
}

.developer-search-trigger:focus-visible {
  outline: 3px solid var(--dev-focus);
  outline-offset: 3px;
}

.developer-search-icon {
  flex: 0 0 auto;
  width: 1rem;
  height: 1rem;
}

.developer-search-trigger kbd {
  margin-left: auto;
  padding: 0.12rem 0.35rem;
  border: 1px solid var(--dev-border-color);
  border-radius: 0.25rem;
  color: var(--dev-text-secondary);
  font: inherit;
  font-size: 0.72rem;
  white-space: nowrap;
}

.developer-header-links {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 1rem;
}

.developer-header-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.developer-header-links img {
  width: 1em;
  height: 1em;
  object-fit: contain;
}

.developer-header-links a,
.developer-main-nav-links a {
  color: var(--dev-text-primary);
  text-decoration: none;
}

.developer-header-links a:hover,
.developer-header-links a:focus-visible {
  color: var(--dev-text-hover);
}

.developer-main-nav-inner {
  width: min(100%, 80rem);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.developer-main-nav-links {
  min-width: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.developer-main-nav-links::-webkit-scrollbar {
  display: none;
}

.developer-main-nav-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 4rem;
  padding: 0.5rem 0.25rem;
  color: #EFEFE8;
  font-family: "Helvetica LT Std Bold", sans-serif;
  font-size: 0.875rem;
  font-weight: 700;
  font-stretch: 79%;
  line-height: 1.25rem;
  letter-spacing: -0.03em;
  border-radius: 0.25rem;
  transition: color 160ms ease, background-color 160ms ease;
}

@media (min-width: 1024px) {
  .developer-main-nav-links a {
    font-size: 1rem;
    line-height: 1.5rem;
  }
}

.developer-main-nav-links img,
.developer-sidebar-link img,
.developer-mobile-popup img { display: none; }

.developer-docs-layout,
.developer-content-frame {
  min-width: 0;
}

.developer-sidebar-group + .developer-sidebar-group {
  padding-top: 1rem;
  border-top: 1px solid var(--dev-border-sidebar);
}

.developer-sidebar .dev-sidebar-heading {
  color: var(--dev-text-secondary);
  font-size: 0.75rem;
}

.developer-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  border-radius: 0.35rem;
  color: var(--dev-text-primary);
  text-decoration: none;
}

.developer-sidebar-link:hover,
.developer-sidebar-link:focus-visible {
  color: var(--dev-text-hover);
}

.developer-sidebar-link.active,
.developer-sidebar-link[aria-current="page"] {
  color: var(--dev-accent);
  background: var(--dev-nav-active-surface);
}

.developer-toc h2 {
  color: var(--dev-text-secondary);
  font-size: 0.75rem;
}

.developer-toc a {
  border-radius: 0.25rem;
  color: var(--dev-text-primary);
  text-decoration: none;
}

.developer-toc a:hover,
.developer-toc a:focus-visible {
  color: var(--dev-text-hover);
}

.developer-toc a.active,
.developer-toc a[aria-current="location"] {
  color: var(--dev-link);
  background: var(--dev-bg-tertiary);
  font-weight: 700;
}

.developer-main {
  min-width: 0;
  --dev-page-title-size: clamp(2.5rem, 4vw, 4rem);
  --dev-title-description-gap: 0.25rem;
  --dev-category-title-gap: 0.5rem;
  --dev-title-content-gap: 1rem;
  --dev-section-gap: 3.5rem;
  --dev-copy-line-height: 1.45;
  --dev-main-gap-1: 0.5rem;
  --dev-main-gap-2: 1rem;
  --dev-main-gap-3: 1.5rem;
  --dev-main-gap-4: 2rem;
}

.article {
  width: min(100%, 64rem);
  margin: 0 auto;
}

.article-heading {
  margin-bottom: var(--dev-section-gap);
}

.article h1 {
  margin: 0;
  color: var(--dev-text-primary);
  font-size: var(--dev-page-title-size);
  line-height: 1.05;
}

.article-summary {
  max-width: 56rem;
  margin: var(--dev-title-description-gap) 0 0;
  color: var(--dev-text-secondary);
  font-size: 1.05rem;
  line-height: var(--dev-copy-line-height);
}

.developer-home-hero {
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: var(--dev-main-gap-4) 0 0;
  overflow: hidden;
  border-radius: var(--dev-radius-card);
}

.developer-home-hero img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (prefers-reduced-motion: reduce) {
  .developer-home-hero {
    display: none;
  }
}

.principles-intro {
  padding: 0;
}

.article-content .principles-intro > h2 {
  max-width: none;
  margin: 0;
  line-height: 1.05;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--dev-text-accent);
  font-size: clamp(2.75rem, 3.25vw, 3.9rem);
  font-weight: 700;
  letter-spacing: 0.015em;
  line-height: 1;
  margin: 0 0 var(--dev-main-gap-1);
  text-transform: uppercase;
}

.eyebrow img {
  width: clamp(3.5rem, 4.17vw, 5rem);
  height: clamp(3.5rem, 4.17vw, 5rem);
  object-fit: contain;
}

.principles-intro > h2 + p,
.section-heading > h2 + p,
.domain-ladder h3 + p,
.article-content h3 + p,
.path-card h3 + p {
  margin-top: var(--dev-title-description-gap);
}

.principles-intro > p:not(.eyebrow) + .inline-link {
  display: inline-block;
  margin-top: var(--dev-title-content-gap);
}

.domain-ladder {
  display: grid;
  gap: 0;
  margin: var(--dev-main-gap-3) 0;
  padding: 0;
  list-style: none;
}

.domain-ladder li {
  display: grid;
  grid-template-columns: minmax(2.25rem, max-content) minmax(0, 1fr);
  gap: 0.25rem;
  align-items: stretch;
  padding: var(--dev-main-gap-3) 0;
  background: transparent;
}

.domain-ladder .domain-level {
  display: flex;
  align-items: center;
  color: var(--dev-text-accent);
  font-family: "Helvetica LT Std Bold", sans-serif;
  font-size: var(--domain-number-height, 3.5rem);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1;
}

.domain-ladder h3 {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.35;
}

.hub-entry-list {
  display: grid;
  gap: var(--dev-main-gap-2);
  margin: var(--dev-main-gap-3) 0;
  padding: 0;
  list-style: none;
}

.hub-entry-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--dev-main-gap-1) var(--dev-main-gap-2);
}

.hub-entry-list li > span {
  color: var(--dev-text-secondary);
}

.domain-ladder p,
.domain-spec-list dd,
.principle-list dd,
.element-catalog dd {
  margin: 0;
  color: var(--dev-text-secondary);
}

@media (max-width: 640px) {
  .domain-ladder li {
    grid-template-columns: minmax(2rem, max-content) minmax(0, 1fr);
    gap: 0.25rem;
  }
}

.principle-list,
.domain-spec-list,
.element-catalog {
  display: grid;
  gap: 0;
  margin: 1.25rem 0;
}

.principle-list > div,
.domain-spec-list > div,
.element-catalog > div {
  padding: 1rem 0;
}

.principle-list > div + div,
.domain-spec-list > div + div,
.element-catalog > div + div {
  border-top: 0;
}

.principle-list dt,
.domain-spec-list dt,
.element-catalog dt {
  margin-bottom: var(--dev-title-description-gap, 2px);
  color: var(--dev-text-primary);
  font-family: var(--dev-font-display);
  font-size: 1.25rem;
}

.domain-spec-list .domain-spec-meta {
  margin-top: 0.5rem;
  color: var(--dev-text-muted);
  font-size: 0.85rem;
}

.article-content {
  min-width: 0;
}

.article-content h2 {
  margin: 0;
  color: var(--dev-text-primary);
  font-size: calc(var(--dev-page-title-size) / 2);
  line-height: 1.2;
}

.article-content h3 {
  margin: 0;
  color: var(--dev-text-primary);
  font-size: 1.25rem;
  line-height: 1.3;
}

.article-content p,
.article-content dd {
  color: var(--dev-text-secondary);
  line-height: var(--dev-copy-line-height);
}

.content-section {
  margin: calc(var(--dev-section-gap) - 1rem) 0 0;
  padding: calc(1rem - 1px) 0 0;
  border-top: 1px solid var(--dev-border-color);
  scroll-margin-top: 9rem;
}

.article-content > .content-section:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.section-heading {
  margin-bottom: var(--dev-title-content-gap);
}

.section-heading p {
  max-width: 62rem;
  margin: var(--dev-title-description-gap) 0 0;
}

@media (max-width: 640px) {
  .domain-ladder li {
    padding: 0.9rem 0;
  }
}

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

.external-resource-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2rem;
  margin-top: var(--dev-title-content-gap);
}

.external-resource-card {
  display: flex;
  min-width: 0;
  min-height: 10rem;
  flex-direction: column;
  align-items: flex-start;
  padding: 1.5rem;
  border-radius: var(--dev-radius-card);
  color: var(--dev-text-primary);
  background: var(--dev-bg-tertiary);
  text-decoration: none;
  transition: background-color 160ms ease;
}

.external-resource-card:hover,
.external-resource-card:focus-visible {
  color: var(--dev-text-primary);
  background: var(--dev-bg-quaternary);
}

.external-resource-card h3 {
  margin: 0;
  font-size: 1.25rem;
}

.external-resource-card p {
  margin: var(--dev-title-description-gap) 0 1rem;
  color: var(--dev-text-secondary);
}

.external-resource-card .text-link {
  margin-top: auto;
}

.path-card {
  display: flex;
  min-width: 0;
  min-height: 13rem;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.65rem;
  color: var(--dev-text-primary);
  text-decoration: none;
}

.path-card:hover {
  color: var(--dev-text-primary);
}

.path-card p {
  flex: 1 1 auto;
}

.path-icon,
.node-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
}

.path-icon img,
.node-icon img {
  width: 1.5rem;
  height: 1.5rem;
  object-fit: contain;
}

.inline-link,
.text-link,
.question-list a,
.related-pages a {
  color: var(--dev-text-accent);
  font-weight: 700;
  text-decoration: none;
}

.inline-link:hover,
.text-link:hover,
.question-list a:hover,
.related-pages a:hover {
  color: var(--dev-text-hover);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.callout {
  margin-top: var(--dev-title-content-gap);
  padding: var(--dev-main-gap-2) var(--dev-main-gap-3);
  border-radius: 0.5rem;
  background: var(--dev-bg-tertiary);
  color: var(--dev-text-secondary);
}

.action-row,
.home-build-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--dev-main-gap-1);
}

.docs-btn img {
  width: 1rem;
  height: 1rem;
  margin-right: 0.5rem;
  object-fit: contain;
}

.small-note {
  margin-top: 1rem;
  color: var(--dev-text-secondary);
  font-size: 0.875rem;
}

.status-list {
  display: grid;
  gap: var(--dev-main-gap-3);
  margin: var(--dev-main-gap-2) 0 0;
}

.status-list > div {
  padding: 0;
}

.status-list dt {
  margin-bottom: var(--dev-main-gap-1);
}

.status-list dd {
  margin: 0;
}

.state-label {
  display: inline;
  color: var(--dev-text-primary);
  background: transparent;
  font-size: 1rem;
  font-weight: 700;
}

.graph-track + .graph-track {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--dev-border-color);
}

.graph-track > h2 {
  margin-bottom: var(--dev-title-content-gap, 8px);
  color: var(--dev-text-primary);
  font-size: 1.25rem;
}

.graph-flow {
  display: flex;
  align-items: stretch;
  gap: 0.75rem;
  overflow-x: auto;
  padding: 0.25rem 0.25rem 1rem;
  list-style: none;
  scrollbar-color: var(--dev-bg-quaternary) var(--dev-bg-secondary);
  scrollbar-width: thin;
}

.graph-node-item {
  flex: 0 0 min(14rem, 72vw);
}

.graph-node {
  display: grid;
  grid-template-columns: 2rem minmax(0, 1fr);
  align-content: start;
  align-items: center;
  gap: var(--dev-title-description-gap, 2px) 0.65rem;
  height: 100%;
  min-height: 8.5rem;
  padding: 1rem;
  border-radius: var(--dev-radius-card);
  color: var(--dev-text-primary);
  background: var(--dev-bg-card);
  text-decoration: none;
  transition: background-color 160ms ease;
}

.graph-node:hover,
.graph-node:focus-visible {
  color: var(--dev-text-primary);
  background: var(--dev-bg-quaternary);
}

.graph-node strong {
  min-width: 0;
  font-size: 0.95rem;
  line-height: 1.3;
}

.graph-node .node-description {
  grid-column: 2;
  color: var(--dev-text-secondary);
  font-size: 0.82rem;
  line-height: 1.45;
}

.graph-edge-item {
  display: flex;
  flex: 0 0 6rem;
  align-items: center;
  justify-content: center;
}

.graph-edge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  color: var(--dev-text-secondary);
  text-align: center;
}

.graph-relation {
  font-size: 0.7rem;
  line-height: 1.25;
}

.graph-arrow {
  color: var(--dev-text-accent);
  font-size: 1.25rem;
  line-height: 1;
}

.system-map figcaption {
  margin-top: 0.75rem;
  color: var(--dev-text-secondary);
  font-size: 0.85rem;
}

.home-build {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.home-build > div:first-child {
  flex: 1 1 20rem;
}

.home-build p {
  margin-top: 0.5rem;
}

.question-list {
  display: grid;
  gap: 0.5rem;
}

.question-list a {
  display: block;
  padding: 0.75rem 1rem;
  border-radius: 0.35rem;
  background: var(--dev-bg-tertiary);
}

.related-pages {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--dev-border-color);
}

.related-pages h2 {
  margin-bottom: 0.75rem;
  font-size: 1.35rem;
}

.related-pages ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: 0.75rem;
}

.related-pages a {
  display: block;
  padding: 0.85rem 1rem;
  border-radius: 0.5rem;
  background: var(--dev-bg-tertiary);
}

.developer-mobile-menu {
  display: none;
  position: relative;
}

.developer-mobile-menu summary {
  display: grid;
  width: 2.75rem;
  height: 2.75rem;
  place-items: center;
  border: 1px solid var(--dev-border-color);
  border-radius: 0.5rem;
  cursor: pointer;
  list-style: none;
}

.developer-mobile-menu summary::-webkit-details-marker {
  display: none;
}

.developer-mobile-menu summary img {
  width: 1.25rem;
  height: 1.25rem;
}

.developer-mobile-popup {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  z-index: 80;
  width: min(22rem, calc(100vw - 2rem));
  max-height: calc(100vh - 6rem);
  overflow: auto;
  padding: 1rem;
  border: 1px solid var(--dev-border-mobile-popup);
  border-radius: 0.5rem;
  background: var(--dev-bg-mobile-popup);
}

.developer-mobile-popup section + section {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--dev-border-sidebar);
}

.developer-mobile-popup h2 {
  margin-bottom: 0.4rem;
  color: var(--dev-text-secondary);
  font-family: var(--dev-font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.developer-mobile-popup a {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.5rem;
  border-radius: 0.3rem;
  color: var(--dev-text-primary);
  text-decoration: none;
}

.developer-mobile-popup a:hover,
.developer-mobile-popup a:focus-visible {
  color: var(--dev-text-hover);
}

.developer-mobile-popup a[aria-current="page"] {
  color: var(--dev-accent);
  background: var(--dev-nav-active-surface);
}

.developer-mobile-popup img {
  width: 1rem;
  height: 1rem;
  object-fit: contain;
}

.search-dialog {
  width: min(44rem, calc(100vw - 2rem));
  max-height: min(80vh, 42rem);
  margin: auto;
  padding: 1.25rem;
  border: 1px solid var(--dev-border-color);
  border-radius: 0.75rem;
  color: var(--dev-text-primary);
  background: var(--dev-bg-secondary);
}

.search-dialog::backdrop {
  background: rgb(0 0 0 / 65%);
}

.search-dialog-form {
  display: grid;
  gap: 1rem;
}

.search-dialog-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 700;
}

.search-close {
  display: grid;
  width: 2.5rem;
  height: 2.5rem;
  place-items: center;
  border-radius: 0.4rem;
  color: var(--dev-text-primary);
  background: var(--dev-bg-tertiary);
}

.search-close:hover {
  background: var(--dev-bg-quaternary);
}

.search-close img {
  width: 1rem;
  height: 1rem;
}

.search-dialog input {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--dev-border-color);
  border-radius: 0.45rem;
  outline: 0;
  color: var(--dev-text-primary);
  background: var(--dev-bg-input);
  font: inherit;
}

.search-dialog input:focus-visible {
  outline: 2px solid var(--dev-focus);
  outline-offset: 2px;
}

.search-dialog input::placeholder {
  color: var(--dev-text-secondary);
}

.search-results {
  max-height: 52vh;
  overflow: auto;
  padding: 6px;
  scroll-padding: 6px;
}

.search-results ul {
  display: grid;
  gap: 0.5rem;
}

.search-results a {
  display: grid;
  gap: 0.25rem;
  padding: 0.75rem;
  border-radius: 0;
  color: var(--dev-text-primary);
  background: var(--dev-bg-tertiary);
  text-decoration: none;
  scroll-margin-block: 6px;
}

.search-results a:hover,
.search-results a:focus-visible {
  color: var(--dev-text-hover);
}

.search-result-title {
  font-weight: 700;
}

.search-result-summary,
.search-empty {
  color: var(--dev-text-secondary);
  font-size: 0.85rem;
}

.not-found {
  padding: 2rem 0;
}

.not-found h1 {
  margin-bottom: 0.75rem;
  font-size: 2.25rem;
}

@media (max-width: 1240px) and (min-width: 1025px) {
  .developer-header-links {
    display: none;
  }

  .developer-search-trigger {
    min-width: 14rem;
  }
}

@media (max-width: 1024px) {
  body.page-dev-layout {
    padding-top: 8rem;
  }

  .developer-mobile-menu {
    display: block;
  }

  .developer-header-links {
    display: none;
  }

  .developer-brand-row {
    min-height: 4rem;
    gap: 0.375rem;
    padding: 0 0.25rem;
  }

  .developer-logo {
    width: 240px;
  }

  .developer-search-trigger {
    min-width: 0;
    width: 2.75rem;
    justify-content: center;
    padding: 0.5rem;
  }

  .developer-search-trigger > span,
  .developer-search-trigger kbd {
    display: none;
  }

  .developer-main-nav-inner {
    padding: 0 1rem;
  }

  .developer-main-nav-links {
    gap: 1rem;
  }

  .developer-main-nav-links a {
    font-size: 0.875rem;
    line-height: 1.25rem;
  }

  .developer-main-nav-links img { display: none; }

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

  .external-resource-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .developer-toc {
    display: none;
  }
}

@media (max-width: 520px) {
  .developer-logo {
    width: 200px;
  }

  .developer-brand {
    gap: 0.2rem;
  }

  .developer-main-nav-inner {
    padding-inline: 0.75rem;
  }

  .developer-main-nav-links {
    gap: 0.75rem;
  }

  .developer-main-nav-links a {
    gap: 0.3rem;
  }

  .graph-node-item {
    flex-basis: min(12rem, 78vw);
  }

  .graph-edge-item {
    flex-basis: 4rem;
  }

  .action-row > a,
  .home-build-links > a {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}