/* IET Framework docs — sharp-cornered editorial design.
   Light and dark themes share one palette; every corner is square. */

:root {
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
    "Liberation Mono", monospace;

  --iet-indigo: #40389b;
  --iet-indigo-bright: #5148c9;
  --iet-orange: #f6a51f;

  --bg: #f7f6f3;
  --surface: #ffffff;
  --surface-2: #f0efeb;
  --text: #1b1a22;
  --muted: #5d5b68;
  --border: #e1e0da;
  --border-strong: #c9c8c0;
  --code-bg: #1e1d28;
  --code-text: #e8e7f2;

  --ok: #0f766e;
  --warn: #b45309;
  --danger: #b91c1c;
}

html[data-theme="dark"] {
  --bg: #14141b;
  --surface: #1c1c26;
  --surface-2: #23232f;
  --text: #eceaf2;
  --muted: #a5a3b6;
  --border: #2c2b39;
  --border-strong: #3d3c4c;
  --iet-indigo: #8b84e8;
  --iet-indigo-bright: #a49ef2;
  --ok: #2dd4bf;
  --warn: #fbbf24;
  --danger: #f87171;
}

* {
  box-sizing: border-box;
}

html {
  height: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--iet-indigo);
  text-decoration: none;
}

html[data-theme="dark"] a {
  color: var(--iet-indigo-bright);
}

a:hover {
  text-decoration: underline;
}

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

/* ------------------------------- navbar ---------------------------------- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1.4rem;
  padding: 0.7rem 1.4rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.01em;
  color: var(--text);
}

.brand:hover {
  text-decoration: none;
  color: var(--iet-indigo);
}

.nav-links {
  display: flex;
  gap: 0.35rem;
}

.nav-link {
  padding: 0.3rem 0.65rem;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
  border: 1px solid transparent;
}

.nav-link:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-link.active {
  color: var(--iet-indigo);
  border-color: var(--iet-indigo);
}

html[data-theme="dark"] .nav-link.active {
  color: var(--iet-indigo-bright);
  border-color: var(--iet-indigo-bright);
}

.nav-search {
  position: relative;
  width: min(340px, 34vw);
}

.nav-search input {
  width: 100%;
  padding: 0.42rem 0.7rem;
  font-family: var(--font-sans);
  font-size: 0.84rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
}

.nav-search input:focus {
  outline: none;
  border-color: var(--iet-indigo);
}

.suggest:empty {
  display: none;
}

.suggest {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.18);
}

.suggest-list {
  margin: 0;
  padding: 0;
  list-style: none;
  max-height: 60vh;
  overflow: auto;
}

.suggest-list a {
  display: block;
  padding: 0.5rem 0.7rem;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.suggest-list li:last-child a {
  border-bottom: 0;
}

.suggest-list a:hover {
  background: var(--surface-2);
  text-decoration: none;
}

.suggest-list strong {
  display: block;
  font-size: 0.84rem;
}

.suggest-list span {
  display: block;
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.theme-toggle {
  margin-left: auto;
  padding: 0.32rem 0.55rem;
  font-size: 0.95rem;
  line-height: 1;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
  cursor: pointer;
}

.theme-toggle:hover {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
}

/* ------------------------------- accounts --------------------------------- */

.auth-nav {
  display: flex;
  align-items: center;
}

.nav-account {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
}

.nav-account:hover {
  color: var(--iet-indigo);
  text-decoration: none;
}

.account-menu {
  position: relative;
}

.account-menu summary {
  list-style: none;
}

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

.account-avatar {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid transparent;
  border-radius: 999px;
  background: var(--iet-indigo);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  user-select: none;
}

.account-avatar:hover,
.account-menu[open] .account-avatar {
  background: var(--iet-indigo-bright);
  border-color: var(--iet-indigo);
}

.account-menu-panel {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  min-width: 12rem;
  padding: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: 0 12px 30px rgb(0 0 0 / 0.12);
}

.account-menu-name {
  margin-bottom: 0.2rem;
  padding: 0.35rem 0.6rem 0.45rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
}

.account-menu-link,
.account-menu-signout {
  display: block;
  width: 100%;
  padding: 0.42rem 0.6rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  text-align: left;
  color: var(--text);
  background: none;
  border: 0;
  cursor: pointer;
}

.account-menu-link:hover,
.account-menu-signout:hover {
  color: var(--iet-indigo);
  background: var(--surface-2);
  text-decoration: none;
}

html[data-theme="dark"] .account-menu-link:hover,
html[data-theme="dark"] .account-menu-signout:hover {
  color: var(--iet-indigo-bright);
}

.auth-page {
  min-height: 100vh;
  background: var(--bg);
}

.auth-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  max-width: 72rem;
  margin: 0 auto;
  padding: 1rem 1.4rem;
  border-bottom: 1px solid var(--border);
}

.auth-links {
  display: flex;
  gap: 1rem;
}

.auth-links a {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--muted);
}

.auth-links a:hover {
  color: var(--iet-indigo);
  text-decoration: none;
}

.auth-main {
  display: flex;
  justify-content: center;
  padding: 3rem 1.4rem 4rem;
}

.auth-card {
  width: min(26rem, 100%);
  align-self: flex-start;
  padding: 1.8rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.auth-card h1 {
  margin: 0.3rem 0 0.6rem;
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

.auth-lead {
  margin: 0 0 1.1rem;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.auth-error {
  margin: 0 0 1rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--danger);
  border-left-width: 3px;
  color: var(--danger);
  font-size: 0.82rem;
}

.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.auth-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.auth-field span {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.auth-field input {
  padding: 0.55rem 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
}

.auth-field input:focus {
  outline: none;
  border-color: var(--iet-indigo);
}

.auth-submit {
  margin-top: 0.3rem;
}

.auth-foot {
  margin: 1.1rem 0 0;
  padding-top: 0.9rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.74rem;
}

.auth-alt {
  margin: 0.9rem 0 0;
  font-size: 0.82rem;
}

.auth-facts {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.35rem 0.9rem;
  margin: 0 0 1.3rem;
}

.auth-facts dt {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.auth-facts dd {
  margin: 0;
  font-size: 0.84rem;
}

.auth-facts dd.auth-mono {
  font-family: var(--font-mono);
  font-size: 0.72rem;
}

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

.layout {
  display: grid;
  grid-template-columns: 285px minmax(0, 1fr) 250px;
  gap: 2.2rem;
  max-width: 1480px;
  margin: 0 auto;
  padding: 1.6rem 1.4rem 3rem;
}

.sidebar {
  position: sticky;
  top: 4.2rem;
  align-self: start;
  max-height: calc(100vh - 5.4rem);
  overflow: auto;
  padding-right: 0.4rem;
  border-right: 1px solid var(--border);
}

.toc {
  position: sticky;
  top: 4.2rem;
  align-self: start;
  max-height: calc(100vh - 5.4rem);
  overflow: auto;
  font-size: 0.8rem;
}

/* ---------------------------- sidebar nav -------------------------------- */

.nav-plain {
  margin: 0 0 0.9rem;
  padding: 0;
  list-style: none;
}

.nav-group {
  border-bottom: 1px solid var(--border);
}

.nav-group summary {
  padding: 0.55rem 0.2rem;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
  cursor: pointer;
  list-style: none;
}

.nav-group summary::-webkit-details-marker {
  display: none;
}

.nav-group summary::before {
  content: "+";
  display: inline-block;
  width: 1rem;
  color: var(--iet-orange);
  font-weight: 700;
}

.nav-group[open] summary::before {
  content: "–";
}

.nav-group ul,
.nav-plain {
  margin: 0;
  padding: 0 0 0.5rem;
  list-style: none;
}

.nav-entry {
  display: block;
  padding: 0.28rem 0.5rem 0.28rem 1.15rem;
  font-size: 0.84rem;
  line-height: 1.35;
  color: var(--muted);
  border-left: 2px solid transparent;
}

.nav-entry:hover {
  color: var(--text);
  text-decoration: none;
  border-left-color: var(--border-strong);
}

.nav-entry.active {
  color: var(--iet-indigo);
  font-weight: 600;
  border-left-color: var(--iet-indigo);
  background: color-mix(in srgb, var(--iet-indigo) 7%, transparent);
}

html[data-theme="dark"] .nav-entry.active {
  color: var(--iet-indigo-bright);
  border-left-color: var(--iet-indigo-bright);
}

/* ------------------------------ content ---------------------------------- */

.content {
  min-width: 0;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: baseline;
  margin-bottom: 1.1rem;
  font-size: 0.76rem;
  color: var(--muted);
}

.breadcrumbs a {
  color: var(--muted);
}

.breadcrumbs .sep {
  color: var(--border-strong);
}

.crumb-current {
  color: var(--text);
  font-weight: 600;
}

.prose {
  max-width: 76ch;
}

.prose h1,
.page-title {
  margin: 0 0 1.2rem;
  font-size: 2.3rem;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.prose h2 {
  margin: 2.6rem 0 0.9rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
  font-size: 1.45rem;
  letter-spacing: -0.015em;
}

.prose h3 {
  margin: 1.9rem 0 0.6rem;
  font-size: 1.12rem;
}

.prose h4 {
  margin: 1.4rem 0 0.5rem;
  font-size: 0.98rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.prose p {
  margin: 0.8rem 0;
}

.prose ul,
.prose ol {
  margin: 0.8rem 0;
  padding-left: 1.4rem;
}

.prose li {
  margin: 0.3rem 0;
}

.prose li > p {
  margin: 0.25rem 0;
}

.prose hr {
  margin: 2rem 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.prose blockquote {
  margin: 1.2rem 0;
  padding: 0.6rem 1rem;
  border-left: 3px solid var(--iet-indigo);
  background: var(--surface-2);
  color: var(--muted);
}

.prose img {
  max-width: 100%;
  border: 1px solid var(--border);
}

.prose code:not(pre code) {
  padding: 0.12rem 0.32rem;
  font-size: 0.86em;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.table-wrap {
  overflow-x: auto;
  margin: 1.2rem 0;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.86rem;
}

.prose th {
  padding: 0.55rem 0.7rem;
  text-align: left;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid var(--border-strong);
}

.prose td {
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.prose tr:hover td {
  background: color-mix(in srgb, var(--iet-indigo) 4%, transparent);
}

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

:root {
  --code-bg: #1d1c26;
  --code-text: #e7e5f4;
  --code-muted: #8d8aa6;
  --code-border: #302f3d;
  --syn-keyword: #ff79c6;
  --syn-string: #f1fa8c;
  --syn-comment: #6d6a8a;
  --syn-function: #50fa7b;
  --syn-type: #8be9fd;
  --syn-constant: #bd93f9;
  --syn-variable: #e7e5f4;
  --syn-punctuation: #a9a6c4;
}

figure.code {
  margin: 1.3rem 0;
  border: 1px solid var(--code-border);
  background: var(--code-bg);
}

.code-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.42rem 0.7rem;
  border-bottom: 1px solid var(--code-border);
  font-size: 0.7rem;
}

.code-title {
  color: var(--code-text);
  font-family: var(--font-mono);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.code-lang {
  margin-left: auto;
  color: var(--code-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.62rem;
}

.code-copy {
  padding: 0.14rem 0.5rem;
  font-size: 0.66rem;
  font-family: var(--font-sans);
  color: var(--code-muted);
  background: transparent;
  border: 1px solid var(--code-border);
  cursor: pointer;
}

.code-copy:hover {
  color: var(--code-text);
  border-color: var(--code-muted);
}

.code-body {
  display: flex;
  overflow-x: auto;
}

.code-gutter {
  flex: 0 0 auto;
  padding: 0.85rem 0.6rem 0.85rem 0.9rem;
  text-align: right;
  color: var(--code-muted);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
  white-space: pre;
  user-select: none;
  border-right: 1px solid var(--code-border);
}

.code-body pre {
  margin: 0;
  padding: 0.85rem 1rem;
  overflow: visible;
  font-size: 0.82rem;
  line-height: 1.6;
}

.code-body code {
  color: var(--code-text);
  background: none;
}

.code-body .keyword { color: var(--syn-keyword); }
.code-body .storage { color: var(--syn-keyword); }
.code-body .string { color: var(--syn-string); }
.code-body .comment { color: var(--syn-comment); font-style: italic; }
.code-body .entity { color: var(--syn-type); }
.code-body .support { color: var(--syn-type); }
.code-body .constant { color: var(--syn-constant); }
.code-body .numeric { color: var(--syn-constant); }
.code-body .variable { color: var(--syn-variable); }
.code-body .punctuation { color: var(--syn-punctuation); }
.code-body .meta { color: var(--syn-muted, var(--syn-comment)); }

/* ------------------------------ diagrams ---------------------------------- */

figure.diagram {
  margin: 1.4rem 0;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
  text-align: center;
}

figure.diagram pre.mermaid {
  margin: 0;
  background: none;
}

pre.mermaid {
  color: var(--text);
}

/* ------------------------------ admonitions ------------------------------- */

.admonition {
  margin: 1.2rem 0;
  padding: 0.8rem 1rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--iet-indigo);
  background: color-mix(in srgb, var(--iet-indigo) 6%, var(--surface));
}

.admonition-title {
  margin: 0 0 0.35rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--iet-indigo);
}

html[data-theme="dark"] .admonition-title {
  color: var(--iet-indigo-bright);
}

.admonition p:last-child {
  margin-bottom: 0;
}

.admonition-tip { border-left-color: var(--ok); }
.admonition-tip .admonition-title { color: var(--ok); }
.admonition-note { border-left-color: var(--muted); }
.admonition-note .admonition-title { color: var(--muted); }
.admonition-info { border-left-color: var(--iet-indigo); }
.admonition-caution { border-left-color: var(--warn); }
.admonition-caution .admonition-title { color: var(--warn); }

/* ------------------------------- pager ------------------------------------ */

.pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.8rem;
  margin: 2.4rem 0 1.2rem;
}

.pager-link {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.pager-link:hover {
  text-decoration: none;
  border-color: var(--iet-indigo);
}

.pager-link span {
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.pager-link strong {
  font-size: 0.88rem;
}

.pager-next {
  grid-column: 2;
  text-align: right;
}

.footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.74rem;
  color: var(--muted);
}

/* --------------------------------- toc ------------------------------------ */

.toc-nav {
  padding-left: 0.2rem;
}

.toc-title {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.toc-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--border);
}

.toc-item a {
  display: block;
  padding: 0.22rem 0 0.22rem 0.7rem;
  color: var(--muted);
  line-height: 1.4;
}

.toc-item a:hover {
  color: var(--iet-indigo);
  text-decoration: none;
}

.toc-sub a {
  padding-left: 1.4rem;
  font-size: 0.76rem;
}

/* ------------------------------ visuals ----------------------------------- */

.viz {
  max-width: 100%;
  margin: 1.5rem 0;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
}

.viz-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
  font-weight: 700;
}

.tree-root {
  font-family: var(--font-mono);
  font-size: 0.82rem;
}

.tree-rows {
  margin-top: 0.4rem;
}

.tree-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.2rem 0.6rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed var(--border);
}

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

.tree-path {
  font-size: 0.78rem;
}

.tree-note {
  grid-column: 1 / -1;
  padding-left: 0.9rem;
  font-size: 0.76rem;
  color: var(--muted);
}

.badge {
  align-self: start;
  justify-self: end;
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.12rem 0.4rem;
  border: 1px solid var(--border-strong);
  color: var(--muted);
}

.badge-kind.badge-contract { border-color: var(--iet-indigo); color: var(--iet-indigo); }
.badge-kind.badge-implementation { border-color: var(--iet-orange); color: var(--warn); }
.badge-kind.badge-adapter { border-color: var(--ok); color: var(--ok); }
.badge-kind.badge-composition { border-color: var(--border-strong); }

.badge-core { border-color: var(--iet-indigo); color: var(--iet-indigo); }
.badge-feature { border-color: var(--iet-orange); color: var(--warn); }
.badge-integration { border-color: var(--ok); color: var(--ok); }
.badge-stack { border-color: var(--border-strong); color: var(--muted); }
.badge-tooling { border-color: var(--border-strong); color: var(--muted); }
.badge-user { border-color: #7c3aed; color: #6d28d9; }

/* flow */
.flow-steps {
  display: flex;
  align-items: stretch;
  margin: 0;
  padding: 0;
  list-style: none;
}

.viz-flow--vertical .flow-steps {
  flex-direction: column;
}

.flow-step {
  flex: 1 1 0;
  min-width: 0;
  position: relative;
  padding: 0.7rem 0.75rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--border-strong);
  background: var(--bg);
}

.flow-step.tone-framework { border-top-color: var(--iet-indigo); }
.flow-step.tone-app { border-top-color: var(--iet-orange); }
.flow-step.tone-storage { border-top-color: var(--ok); }
.flow-step.tone-boundary { border-top-color: var(--border-strong); }
.flow-step.tone-error { border-top-color: var(--danger); }

.flow-index {
  position: absolute;
  top: 0.3rem;
  right: 0.4rem;
  font-size: 0.58rem;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.flow-tag {
  display: block;
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--iet-indigo);
}

.flow-step strong {
  display: block;
  font-size: 0.84rem;
  line-height: 1.3;
  padding-right: 1rem;
}

.flow-step small {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.72rem;
  color: var(--muted);
}

.flow-arrow {
  flex: 0 0 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--iet-indigo);
}

.viz-flow--vertical .flow-arrow {
  flex: 0 0 1.2rem;
}

/* module roles */
.roles-composition {
  max-width: 22rem;
  margin: 0 auto;
  padding: 0.6rem 0.8rem;
  text-align: center;
  border: 1px dashed var(--border-strong);
}

.roles-composition code {
  display: block;
  font-weight: 700;
}

.roles-composition small {
  color: var(--muted);
  font-size: 0.7rem;
}

.roles-down {
  padding: 0.5rem 0;
  text-align: center;
  font-size: 0.66rem;
  color: var(--muted);
}

.roles-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 1.4rem minmax(0, 1fr) 1.4rem minmax(0, 1fr);
  align-items: center;
  gap: 0.3rem;
}

.role-card {
  padding: 0.65rem 0.7rem;
  border: 1px solid var(--border);
  background: var(--bg);
}

.role-card code {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
}

.role-card small {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.7rem;
  color: var(--muted);
}

.role-contract { border: 2px solid var(--iet-indigo); }
.role-adapter { border-top: 3px solid var(--ok); }
.role-implementation { border-top: 3px solid var(--iet-orange); }

.role-arrow {
  text-align: center;
  color: var(--iet-indigo);
}

.viz-label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.viz-caption {
  margin-top: 0.8rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--border);
  font-size: 0.74rem;
  color: var(--muted);
}

/* app shape */
.viz-shape {
  container-type: inline-size;
}

.shape-grid {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.shape-column {
  display: flex;
  flex: 1 1 0;
  min-width: 0;
  flex-direction: column;
  gap: 0.35rem;
}

.shape-trait {
  flex: 1.15 1 0;
  min-width: 0;
}

.shape-arrow {
  flex: 0 0 3.4rem;
}

.shape-chip {
  padding: 0.32rem 0.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  background: var(--bg);
  font-size: 0.74rem;
  overflow-wrap: anywhere;
}

.shape-adapter { border-left-color: var(--iet-orange); }
.shape-implementation { border-left-color: var(--ok); }

.shape-trait {
  padding: 0.7rem 0.6rem;
  border: 2px solid var(--iet-indigo);
  text-align: center;
}

.shape-trait code {
  display: block;
  font-weight: 700;
}

.shape-trait small {
  color: var(--muted);
  font-size: 0.64rem;
}

.shape-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--iet-indigo);
  font-size: 0.58rem;
  text-align: center;
}

.shape-arrow strong {
  display: inline-block;
  font-size: 0.95rem;
  line-height: 1;
}

/* modular monolith */
.monolith-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.monolith-process {
  padding: 0.8rem;
  border: 1px solid var(--border-strong);
  margin: 0.4rem 0;
}

.monolith-modules {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.monolith-module,
.monolith-consumer {
  padding: 0.3rem 0.55rem;
  border: 1px solid var(--border);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.74rem;
}

.monolith-consumers {
  display: flex;
  gap: 0.4rem;
  margin: 0.4rem 0;
}

.monolith-shared {
  padding: 0.55rem 0.65rem;
  border: 1px solid var(--iet-orange);
  margin-bottom: 0.4rem;
}

.monolith-shared code {
  font-weight: 700;
}

.monolith-shared small {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
}

.monolith-panel small {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
}

/* crate map */
.map-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  padding-bottom: 0.8rem;
  margin-bottom: 0.8rem;
  border-bottom: 1px solid var(--border);
}

.map-step {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  color: var(--muted);
}

.map-step--active {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
  background: color-mix(in srgb, var(--iet-indigo) 10%, transparent);
}

.map-grid {
  display: grid;
  grid-template-columns: minmax(9rem, 1fr) 4rem minmax(10rem, 1.1fr) 4rem minmax(9rem, 1fr);
  align-items: center;
  gap: 0.35rem;
  min-width: 620px;
}

.map-column {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.map-chip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-strong);
  background: var(--bg);
  font-family: var(--font-mono);
  font-size: 0.68rem;
}

.map-chip--contract { border-left-color: var(--iet-indigo); }

.map-chip em {
  font-family: var(--font-sans);
  font-style: normal;
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--iet-indigo);
}

.map-chip--example {
  border-left-color: var(--iet-orange);
  font-style: italic;
}

.map-center {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  align-items: center;
  text-align: center;
  padding: 0.8rem 0.6rem;
  border: 2px solid var(--iet-indigo);
}

.map-center code {
  font-weight: 700;
  background: none;
}

.map-role {
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--warn);
}

.map-center small {
  font-size: 0.64rem;
  color: var(--muted);
  line-height: 1.35;
}

.map-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--iet-indigo);
  font-size: 0.56rem;
  text-align: center;
}

.map-empty,
.map-more {
  font-size: 0.64rem;
  color: var(--muted);
}

/* schema */
.schema-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.9rem;
  align-items: start;
}

.schema-table {
  border: 1px solid var(--border);
  background: var(--bg);
}

.schema-table header {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding: 0.55rem 0.7rem;
  background: var(--surface-2);
  border-bottom: 1px solid var(--border);
}

.schema-table header code {
  font-weight: 700;
}

.schema-table header span {
  font-size: 0.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.schema-rows {
  padding: 0.3rem 0.5rem;
}

.schema-row {
  display: grid;
  grid-template-columns: 1.4rem minmax(0, 1fr) auto;
  gap: 0.4rem;
  align-items: baseline;
  padding: 0.28rem 0.1rem;
  border-bottom: 1px dashed var(--border);
}

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

.schema-pk {
  font-size: 0.5rem;
  font-weight: 700;
  color: var(--warn);
}

.schema-row code {
  font-size: 0.72rem;
}

.schema-type {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  color: var(--muted);
  white-space: nowrap;
}

.schema-table footer {
  padding: 0.45rem 0.7rem 0.6rem;
  border-top: 1px solid var(--border);
  font-size: 0.64rem;
}

.schema-fk {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: baseline;
  padding: 0.12rem 0;
}

.schema-fk span {
  color: var(--iet-indigo);
}

.schema-external {
  border-bottom: 1px dashed var(--border-strong);
}

.schema-meta {
  color: var(--muted);
}

/* tabs */
.tabs {
  margin: 1.2rem 0;
  border: 1px solid var(--border);
  background: var(--surface);
}

.tab-labels {
  display: flex;
  border-bottom: 1px solid var(--border);
}

.tab-labels label {
  padding: 0.5rem 0.9rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-right: 1px solid var(--border);
}

.tab-panel {
  display: none;
  padding: 0.8rem 1rem;
}

.tabs input:nth-of-type(1):checked ~ .tab-labels label:nth-of-type(1),
.tabs input:nth-of-type(2):checked ~ .tab-labels label:nth-of-type(2),
.tabs input:nth-of-type(3):checked ~ .tab-labels label:nth-of-type(3),
.tabs input:nth-of-type(4):checked ~ .tab-labels label:nth-of-type(4) {
  color: var(--iet-indigo);
  box-shadow: inset 0 -2px 0 var(--iet-indigo);
}

.tabs input:nth-of-type(1):checked ~ .tab-panel[data-tab="0"],
.tabs input:nth-of-type(2):checked ~ .tab-panel[data-tab="1"],
.tabs input:nth-of-type(3):checked ~ .tab-panel[data-tab="2"],
.tabs input:nth-of-type(4):checked ~ .tab-panel[data-tab="3"] {
  display: block;
}

/* ------------------------------ catalog ----------------------------------- */

.catalog-slot {
  margin: 1.5rem 0;
  padding: 1rem;
  border: 1px dashed var(--border-strong);
  min-height: 5rem;
}

.catalog-loading {
  margin: 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.catalog {
  margin: 1.4rem 0;
}

.catalog-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin-bottom: 0.9rem;
}

.catalog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.26rem 0.6rem;
  border: 1px solid var(--border-strong);
  font-size: 0.72rem;
  text-transform: capitalize;
  color: var(--text);
  background: var(--surface);
}

.filter-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--border-strong);
}

.filter-chip[data-kind="core"]::before { background: var(--iet-indigo); }
.filter-chip[data-kind="feature"]::before { background: var(--iet-orange); }
.filter-chip[data-kind="integration"]::before { background: var(--ok); }
.filter-chip[data-kind="stack"]::before { background: #475569; }
.filter-chip[data-kind="tooling"]::before { background: #94a3b8; }
.filter-chip[data-kind="user"]::before { background: #7c3aed; }

.filter-chip span {
  color: var(--muted);
  font-size: 0.66rem;
}

.filter-chip:hover {
  text-decoration: none;
  border-color: var(--iet-indigo);
}

.filter-chip--active {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
  font-weight: 700;
}

.catalog-publish {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  background: var(--iet-indigo);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
}

.catalog-publish:hover {
  text-decoration: none;
  background: var(--iet-indigo-bright);
}

.catalog-search {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.4rem;
}

.catalog-search input {
  flex: 1;
  padding: 0.5rem 0.7rem;
  font-family: var(--font-sans);
  font-size: 0.84rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
}

.catalog-search input:focus {
  outline: none;
  border-color: var(--iet-indigo);
}

.catalog-search button {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  cursor: pointer;
}

.catalog-search button:hover {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
}

.catalog-group {
  margin-bottom: 2rem;
}

.catalog-group h3 {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  margin: 0 0 0.9rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 1.05rem;
}

.catalog-count {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
  border: 1px solid var(--border-strong);
  padding: 0.05rem 0.5rem;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16.5rem, 1fr));
  gap: 0.75rem;
}

.crate-card {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.85rem 0.9rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.crate-card:hover {
  text-decoration: none;
  border-color: var(--iet-indigo);
  transform: translateY(-1px);
}

.crate-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
}

.crate-origin {
  padding: 0.08rem 0.42rem;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid var(--border);
  color: var(--muted);
  white-space: nowrap;
}

.crate-origin--official {
  color: var(--iet-indigo);
  border-color: color-mix(in srgb, var(--iet-indigo) 45%, var(--border));
  background: color-mix(in srgb, var(--iet-indigo) 7%, transparent);
}

html[data-theme="dark"] .crate-origin--official {
  color: var(--iet-indigo-bright);
  border-color: color-mix(in srgb, var(--iet-indigo-bright) 45%, var(--border));
}

.crate-card-name {
  font-weight: 700;
  background: none;
}

.crate-card strong {
  font-size: 0.82rem;
}

.crate-card p {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.5;
  color: var(--muted);
}

.crate-card small {
  margin-top: auto;
  padding-top: 0.45rem;
  font-size: 0.65rem;
  color: var(--muted);
}

.catalog-empty {
  padding: 2rem 0;
  text-align: center;
  color: var(--muted);
}

/* ---------------------------- app showcase -------------------------------- */

.wide {
  padding: 1.6rem 1.4rem 3.4rem;
}

.wide-inner {
  max-width: 1240px;
  margin: 0 auto;
}

.wide-hero {
  max-width: 780px;
  margin: 0.8rem auto 0;
  text-align: center;
}

.wide-hero h1 {
  margin: 0.3rem 0 0.8rem;
  font-size: clamp(1.9rem, 3.4vw, 2.6rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.wide-lead {
  max-width: 650px;
  margin: 0 auto;
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--muted);
}

.wide-cta {
  margin-top: 1.3rem;
}

.wide-body {
  max-width: 900px;
  margin: 1.4rem auto 0;
}

.wide-body--index {
  max-width: none;
}

.wide-body--index > p,
.wide-body--index > h2,
.wide-body--index > h3,
.wide-body--index > ul,
.wide-body--index > table {
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.app-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.2rem;
  max-width: 900px;
  margin: 1.3rem auto 0;
  border-bottom: 1px solid var(--border);
}

.app-tab {
  padding: 0.5rem 0.85rem;
  border-bottom: 2px solid transparent;
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--muted);
}

.app-tab:hover {
  color: var(--iet-indigo);
  text-decoration: none;
}

.app-tab.active {
  color: var(--iet-indigo);
  border-bottom-color: var(--iet-indigo);
}

.showcase {
  margin: 0.4rem 0 0;
}

.showcase-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  margin: 0 0 1.6rem;
}

.showcase-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.showcase-filters-label {
  margin-right: 0.35rem;
  font-size: 1.05rem;
  font-weight: 700;
}

.showcase-search {
  display: flex;
  margin-left: auto;
}

.showcase-search input {
  width: min(320px, 46vw);
  padding: 0.5rem 0.7rem;
  font-family: var(--font-sans);
  font-size: 0.84rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
}

.showcase-search input:focus {
  outline: none;
  border-color: var(--iet-indigo);
}

.showcase-group {
  margin: 0 0 2rem;
}

.showcase-group h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.85rem;
  font-size: 1.08rem;
}

.showcase-count {
  padding: 0.05rem 0.42rem;
  border: 1px solid var(--border);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--muted);
}

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  gap: 1rem;
}

.app-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}

.app-card:hover {
  text-decoration: none;
  border-color: var(--iet-indigo);
  transform: translateY(-1px);
}

.app-shot {
  margin: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.app-shot img {
  display: block;
  width: 100%;
  height: 10.5rem;
  object-fit: cover;
  object-position: top left;
}

.app-tile {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  height: 10.5rem;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}

.app-tile-label {
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--muted);
}

.app-tile-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
}

.app-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.9rem 1rem 1rem;
}

.app-card-title {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.app-card-name {
  font-size: 0.96rem;
  line-height: 1.3;
}

.app-card-tagline {
  display: -webkit-box;
  margin: 0;
  overflow: hidden;
  font-size: 0.78rem;
  line-height: 1.5;
  color: var(--muted);
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.app-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  margin: 0.15rem 0 0;
  padding: 0;
  list-style: none;
}

.app-stack li {
  padding: 0.14rem 0.42rem;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-size: 0.66rem;
  color: var(--muted);
}

.app-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.35rem;
}

.app-source {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--muted);
}

.app-guide {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--iet-indigo);
}

.badge-starter { border-color: var(--iet-indigo); color: var(--iet-indigo); }
.badge-reference { border-color: var(--iet-orange); color: var(--warn); }
.badge-teaching { border-color: var(--ok); color: var(--ok); }
.badge-site { border-color: var(--border-strong); color: var(--muted); }
.badge-community { border-color: #7c3aed; color: #6d28d9; }

.showcase-empty {
  padding: 2rem 0;
  text-align: center;
  color: var(--muted);
}

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

.results {
  margin: 1.2rem 0;
  padding: 0;
  list-style: none;
}

.result {
  padding: 0.8rem 0;
  border-bottom: 1px solid var(--border);
}

.result-title {
  font-size: 0.95rem;
  font-weight: 700;
}

.result-snippet {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.search-meta,
.search-empty {
  color: var(--muted);
  font-size: 0.84rem;
}

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

@media (max-width: 1180px) {
  .layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }
  .toc {
    display: none;
  }
}

@media (max-width: 860px) {
  .navbar {
    flex-wrap: wrap;
  }
  .auth-nav {
    order: 1;
  }
  .theme-toggle {
    order: 2;
    margin-left: 0;
  }
  .nav-search {
    order: 3;
    width: 100%;
    margin-left: 0;
  }
  .layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--border);
    padding-bottom: 0.8rem;
  }
  .map-grid,
  .roles-grid,
  .monolith-grid {
    min-width: 0;
    grid-template-columns: 1fr;
  }
  .flow-steps {
    flex-direction: column;
  }
  .pager {
    grid-template-columns: 1fr;
  }
  .pager-next {
    grid-column: 1;
    text-align: left;
  }
}

/* ------------------------------- landing ---------------------------------- */

.landing {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.4rem 4rem;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--iet-indigo);
}

html[data-theme="dark"] .eyebrow {
  color: var(--iet-indigo-bright);
}

.eyebrow::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--iet-orange);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(0, 1fr);
  gap: 3.2rem;
  align-items: center;
  padding: 4.2rem 0 3.4rem;
}

.hero h1 {
  margin: 0.7rem 0 1.1rem;
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
}

.lead {
  max-width: 34rem;
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.7;
  color: var(--muted);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.8rem 0 1.5rem;
}

.btn {
  display: inline-block;
  padding: 0.62rem 1.05rem;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 600;
  transition: border-color 120ms ease, transform 120ms ease, color 120ms ease;
}

.btn:hover {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-primary {
  border-color: var(--iet-indigo);
  background: var(--iet-indigo);
  color: #ffffff;
}

.btn-primary:hover {
  border-color: var(--iet-indigo-bright);
  background: var(--iet-indigo-bright);
  color: #ffffff;
}

/* In the dark theme the indigo token is bright, so filled buttons take dark
   text; white-on-bright-indigo was unreadable. */
html[data-theme="dark"] .btn-primary,
html[data-theme="dark"] .btn-primary:hover,
html[data-theme="dark"] .catalog-publish,
html[data-theme="dark"] .catalog-publish:hover {
  color: #14141b;
}

.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 1.3rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-facts li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.hero-facts li::before {
  content: "";
  width: 7px;
  height: 7px;
  background: var(--ok);
}

.hero-visual .viz {
  margin: 0;
  box-shadow: 0 26px 70px rgba(24, 20, 60, 0.18);
}

.viz-shape--hero .shape-arrow {
  flex: 0 0 3.2rem;
}

.viz-shape--hero .shape-arrow span {
  font-size: 0.5rem;
  letter-spacing: 0;
}

.viz-shape--hero .shape-chip {
  padding: 0.28rem 0.45rem;
  font-size: 0.68rem;
}

.viz-shape--hero .shape-trait code {
  font-size: 0.92rem;
}

.band-registry .catalog-slot {
  margin-top: 1.5rem;
}

.band-registry .catalog {
  margin: 0;
  padding: 1.1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  max-height: 780px;
  overflow: auto;
}

.band {
  padding: 3.4rem 0;
  border-top: 1px solid var(--border);
}

.band-tint {
  margin: 0.4rem 0;
  padding: 2.6rem 2.4rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.pillars {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.pillar {
  padding: 1.15rem 1.2rem 1.25rem;
  border: 1px solid var(--border);
  border-top: 3px solid var(--iet-indigo);
  background: var(--surface);
}

.pillar-number {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--iet-orange);
}

.pillar h3 {
  margin: 0.4rem 0 0.45rem;
  font-size: 1.06rem;
  letter-spacing: -0.01em;
}

.pillar p {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.62;
  color: var(--muted);
}

.section-head {
  max-width: 47rem;
  margin-bottom: 1.7rem;
}

.section-head h2 {
  margin: 0.55rem 0 0.6rem;
  font-size: clamp(1.55rem, 2.7vw, 2.1rem);
  letter-spacing: -0.022em;
  line-height: 1.15;
}

.section-head p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--muted);
}

.capabilities {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr));
  gap: 0.75rem;
}

.capability {
  position: relative;
  display: block;
  padding: 1rem 2.4rem 1.05rem 1.05rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  transition: border-color 120ms ease, transform 120ms ease;
}

.capability:hover {
  border-color: var(--iet-indigo);
  text-decoration: none;
  color: var(--text);
  transform: translateY(-1px);
}

.capability strong {
  display: block;
  margin-bottom: 0.32rem;
  font-size: 0.92rem;
}

.capability p {
  margin: 0;
  font-size: 0.79rem;
  line-height: 1.58;
  color: var(--muted);
}

.capability-arrow {
  position: absolute;
  top: 1rem;
  right: 1rem;
  color: var(--iet-orange);
  transition: transform 120ms ease;
}

.capability:hover .capability-arrow {
  transform: translateX(3px);
}

.shots {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.7fr);
  gap: 1rem;
  align-items: start;
}

.shot {
  display: block;
  width: 100%;
  border: 1px solid var(--border);
}

.band-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.band-catalog {
  margin-top: 1rem;
  padding: 2.4rem;
  border: 1px solid var(--border);
  background: var(--surface);
}

.catalog-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.6rem;
}

.catalog-cta h2 {
  margin: 0.5rem 0 0.55rem;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  letter-spacing: -0.022em;
}

.catalog-cta p {
  max-width: 44rem;
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 1.4rem;
}

.badge-strip .badge {
  padding: 0.24rem 0.62rem;
  font-size: 0.62rem;
}

@media (max-width: 1000px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 2.2rem;
    padding-top: 3rem;
  }
  .pillars {
    grid-template-columns: 1fr;
  }
  .shots {
    grid-template-columns: 1fr;
  }
  .band-tint,
  .band-catalog {
    padding: 1.6rem;
  }
}

/* Shape diagram breakpoints (after base rules so they win). */

@container (max-width: 620px) {
  .shape-grid {
    gap: 0.3rem;
  }
  .shape-arrow {
    flex: 0 0 2.2rem;
    min-width: 0;
  }
  .shape-arrow span {
    font-size: 0.46rem;
    letter-spacing: 0;
    overflow-wrap: anywhere;
  }
  .shape-chip {
    padding: 0.26rem 0.4rem;
    font-size: 0.68rem;
  }
}

@container (max-width: 480px) {
  .shape-grid {
    flex-direction: column;
    align-items: stretch;
  }
  .shape-column,
  .shape-trait {
    flex: 0 0 auto;
  }
  .shape-arrow {
    flex: 0 0 auto;
    flex-direction: row;
    justify-content: center;
    gap: 0.5rem;
  }
  .shape-arrow strong {
    display: inline-block;
    transform: rotate(90deg);
  }
}


/* --------------------------- account publishing --------------------------- */

/* Stable viewport geometry while public boundaries load. The results region
   scrolls independently so changing result counts cannot move the document. */
html { scrollbar-gutter: stable; }
.auth-nav { flex: 0 0 auto; }
.auth-nav .nav-account { max-width: 12rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.deferred-panel {
  height: clamp(34rem, 76vh, 64rem);
  overflow: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  overflow-anchor: none;
}
#page-content[data-section="/crates"] .deferred-panel {
  height: auto;
  min-height: 28rem;
  overflow: visible;
}
#page-content[data-section="/crates"] .catalog-publish {
  display: none;
}
#page-content[data-section="/crates"] .wide-body--index > h1:first-child {
  display: none;
}
.panel-skeleton { padding-block: .5rem; }
.skeleton-controls { height: 7rem; margin-bottom: 1rem; background: var(--surface); border: 1px solid var(--border); }
.skeleton-card { min-height: 14rem; pointer-events: none; }
.app-grid .skeleton-card { min-height: 28rem; }
.skeleton-line { height: .8rem; width: 82%; margin-block: .5rem; background: var(--border); }
.skeleton-line:last-child { width: 58%; }
.app-grid .skeleton-media { height: 13rem; background: var(--border); }
.boundary-error { padding: 2rem; }
.boundary-error button { cursor: pointer; color: var(--text); background: var(--surface); border: 1px solid var(--border); padding: .5rem 1rem; }
.nav-link.active { color: var(--iet-indigo); }
@media (max-width: 640px) {
  .auth-nav .nav-account { max-width: 5rem; }
  .deferred-panel { height: 72vh; min-height: 28rem; }
}

.account-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1.2rem;
}

.account-table {
  width: 100%;
  margin: 1rem 0 1.4rem;
  border-collapse: collapse;
  font-size: 0.84rem;
}

.account-table th {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid var(--border-strong);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: left;
  color: var(--muted);
}

.account-table td {
  padding: 0.55rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.account-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.account-actions form {
  display: inline-flex;
  margin: 0;
}

.account-actions .btn {
  padding: 0.3rem 0.6rem;
  font-size: 0.74rem;
}

.auth-field select,
.auth-field textarea {
  padding: 0.55rem 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border-strong);
}

.auth-field textarea {
  resize: vertical;
}

.auth-field select:focus,
.auth-field textarea:focus {
  outline: none;
  border-color: var(--iet-indigo);
}

/* --------------------------- crate reference ------------------------------ */

.crate-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.3rem 0 1rem;
}
.crate-badge {
  padding: 0.16rem 0.5rem;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  color: var(--muted);
}
.crate-badge--core {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
}
.crate-badge--feature {
  border-color: var(--iet-orange);
  color: #b4740c;
}
.crate-badge--integration {
  border-color: #0f766e;
  color: #0f766e;
}
.crate-badge--stack {
  border-color: #475569;
  color: #475569;
}
.crate-badge--official {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
  background: color-mix(in srgb, var(--iet-indigo) 7%, transparent);
}
html[data-theme="dark"] .crate-badge--core,
html[data-theme="dark"] .crate-badge--official {
  border-color: var(--iet-indigo-bright);
  color: var(--iet-indigo-bright);
}
html[data-theme="dark"] .crate-badge--feature {
  color: var(--iet-orange);
}
html[data-theme="dark"] .crate-badge--integration {
  border-color: #2dd4bf;
  color: #2dd4bf;
}
html[data-theme="dark"] .crate-badge--stack {
  border-color: #94a3b8;
  color: #94a3b8;
}

/* Crate detail top bar: breadcrumbs on the left, crates.io shortcut on the right. */
.wide-topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.2rem;
  max-width: 900px;
  margin: 0 auto 1.2rem;
}

.wide-topbar .breadcrumbs {
  margin-bottom: 0;
}

.crate-shortcut {
  margin-left: auto;
  padding: 0.32rem 0.7rem;
  border: 1px solid var(--border-strong);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 600;
  white-space: nowrap;
}

.crate-shortcut:hover {
  border-color: var(--iet-indigo);
  color: var(--iet-indigo);
  text-decoration: none;
}