/* ── Academy design tokens ────────────────────────────────────────────────── */
:root {
  --cx-group-basic: #4ec1ec;
  --cx-group-inputs: #f59e0b;
  --cx-group-various: #3880ad;
  --cx-group-meta: #8b5cf6;

  --cx-academy-radius: 4px;
  --cx-academy-card-radius: 6px;
  --cx-academy-gap: 1rem;
  --cx-academy-gap-sm: 0.5rem;
  --cx-academy-gap-xs: 0.25rem;
}

/* Group color resolution — consumed everywhere via --cx-academy-group-color */
[data-cx-group="basic"] {
  --cx-academy-group-color: var(--cx-group-basic);
}
[data-cx-group="inputs"] {
  --cx-academy-group-color: var(--cx-group-inputs);
}
[data-cx-group="various"] {
  --cx-academy-group-color: var(--cx-group-various);
}
[data-cx-group="meta"] {
  --cx-academy-group-color: var(--cx-group-meta);
}

/* ── Utility ──────────────────────────────────────────────────────────────── */
.cx-academy-hidden {
  display: none !important;
}

/* ── Catalog: stats bar ───────────────────────────────────────────────────── */
.cx-academy-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cx-academy-gap-sm);
  align-items: center;
  padding: 0.75rem 0;
  font-size: 0.875rem;
  color: var(--taxonomy-text-muted, #6c757d);
  border-bottom: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  margin-bottom: var(--cx-academy-gap);
}

.cx-academy-stat {
  padding: 0 var(--cx-academy-gap-sm);
}
.cx-academy-stat:not(:first-child) {
  border-left: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
}
.cx-academy-stat--generated {
  font-style: italic;
}

/* ── Catalog: featured row ────────────────────────────────────────────────── */
.cx-academy-featured {
  margin-bottom: calc(var(--cx-academy-gap) * 1.5);
}

.cx-academy-featured__heading {
  font-size: 1rem !important;
  font-weight: 600;
  color: var(--taxonomy-heading-primary, var(--ci-color-primary, #153558));
  margin: 0 0 var(--cx-academy-gap-sm);
  text-transform: none !important;
  letter-spacing: normal;
}

.cx-academy-featured__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: var(--cx-academy-gap-sm);
}

.cx-academy-featured__card {
  display: flex;
  flex-direction: column;
  gap: var(--cx-academy-gap-xs);
  padding: 0.75rem 0.875rem 0.875rem;
  background: var(--taxonomy-bg-card, #fff);
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  border-left: 3px solid var(--cx-academy-group-color, var(--cx-group-basic));
  border-radius: var(--cx-academy-card-radius);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--taxonomy-shadow-xs);
  transition:
    box-shadow 0.15s ease,
    transform 0.15s ease;
}

.cx-academy-featured__card:hover {
  box-shadow: var(--taxonomy-shadow-sm);
  transform: translateY(-1px);
  text-decoration: none;
  color: inherit;
}

.cx-academy-featured__stripe {
  display: none;
}

.cx-academy-featured__title {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--taxonomy-heading-primary, var(--ci-color-primary, #153558));
  line-height: 1.2;
}

.cx-academy-featured__headline {
  font-size: 0.8rem;
  color: var(--taxonomy-text-muted, #6c757d);
}

/* ── Catalog: filter bar ──────────────────────────────────────────────────── */
.cx-academy-filterbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cx-academy-gap-sm);
  align-items: center;
  margin-bottom: var(--cx-academy-gap);
}

.cx-academy-search {
  flex: 1 1 220px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  border-radius: var(--cx-academy-radius);
  font-size: 0.875rem;
  background: var(--taxonomy-bg-card, #fff);
  color: var(--taxonomy-text-primary, inherit);
  outline: none;
}

.cx-academy-search:focus {
  border-color: var(--ci-color-secondary, #4ec1ec);
  box-shadow: 0 0 0 2px rgba(78, 193, 236, 0.2);
}

.cx-academy-groups {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cx-academy-gap-xs);
}

.cx-academy-group-btn {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.12));
  border-radius: var(--cx-academy-radius);
  background: transparent;
  font-size: 0.8125rem;
  cursor: pointer;
  color: var(--taxonomy-text-secondary, #283340);
  transition: all 0.15s ease;
}

.cx-academy-group-btn:hover {
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-color: var(--ci-color-secondary, #4ec1ec);
  color: var(--ci-color-primary, #153558);
}

.cx-academy-group-btn--active {
  background: var(--ci-color-primary, #153558);
  border-color: var(--ci-color-primary, #153558);
  color: #fff;
}

/* ── Catalog: card grid ───────────────────────────────────────────────────── */
.cx-academy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--cx-academy-gap);
}

@media (min-width: 1200px) {
  .cx-academy-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 640px) {
  .cx-academy-grid {
    grid-template-columns: 1fr;
  }
}

.cx-academy-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--cx-academy-gap-xs);
  padding: 0.75rem 0.875rem 0.875rem 1rem;
  background: var(--taxonomy-bg-card, #fff);
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  border-radius: var(--cx-academy-card-radius);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--taxonomy-shadow-xs);
  overflow: hidden;
  transition:
    box-shadow 0.15s ease,
    transform 0.15s ease;
}

.cx-academy-card:hover {
  box-shadow: var(--taxonomy-shadow-md);
  transform: translateY(-2px);
  text-decoration: none;
  color: inherit;
}

.cx-academy-card__stripe {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--cx-academy-group-color, var(--cx-group-basic));
  border-radius: var(--cx-academy-card-radius) 0 0 var(--cx-academy-card-radius);
}

.cx-academy-card__group-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cx-academy-group-color, var(--cx-group-basic));
  margin-bottom: var(--cx-academy-gap-xs);
}

.cx-academy-card__title {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--taxonomy-heading-primary, var(--ci-color-primary, #153558));
  line-height: 1.3;
}

.cx-academy-card__description {
  font-size: 0.8125rem;
  color: var(--taxonomy-text-secondary, #283340);
  line-height: 1.4;
  flex: 1;
}

.cx-academy-card__meta {
  font-size: 0.75rem;
  color: var(--taxonomy-text-muted, #6c757d);
  margin-top: auto;
  padding-top: var(--cx-academy-gap-xs);
}

/* ── Catalog: page wrapper ────────────────────────────────────────────────── */
.cx-academy-catalog {
  padding: 0 2rem 1.5rem;
}

/* ── Element page: wrapper ────────────────────────────────────────────────── */
.cx-academy-element-page {
  padding: 0 2rem 1.5rem;
}

.cx-academy-element-page > .gdoc-markdown {
  padding: 0;
  background: transparent;
}

/* ── Element page: header ─────────────────────────────────────────────────── */
.cx-academy-page-header {
  position: relative;
  margin-bottom: 1.25rem;
}

.cx-academy-page-header__border {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--cx-academy-group-color, var(--cx-group-basic));
  border-radius: 2px 0 0 2px;
}

.cx-academy-page-header__content {
  margin-left: 4px;
  padding: 1.125rem 1.25rem;
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  border-left: none;
  border-radius: 0 var(--cx-academy-card-radius) var(--cx-academy-card-radius) 0;
  box-shadow: var(--taxonomy-shadow-xs);
}

.cx-academy-page-header__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--cx-academy-gap-xs);
  margin-bottom: 0.75rem;
}

.cx-academy-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: var(--taxonomy-radius-full, 9999px);
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.cx-academy-badge--group {
  background: color-mix(
    in srgb,
    var(--cx-academy-group-color, var(--cx-group-basic)) 15%,
    transparent
  );
  color: var(--cx-academy-group-color, var(--cx-group-basic));
  border: 1px solid
    color-mix(
      in srgb,
      var(--cx-academy-group-color, var(--cx-group-basic)) 30%,
      transparent
    );
}

.cx-academy-badge--reference {
  background: rgba(21, 53, 88, 0.08);
  color: var(--ci-color-primary, #153558);
  border: 1px solid rgba(21, 53, 88, 0.2);
}

.cx-academy-badge--generated {
  background: rgba(0, 150, 136, 0.08);
  color: var(--ci-color-success, #009688);
  border: 1px solid rgba(0, 150, 136, 0.2);
}

.cx-academy-page-header__title {
  font-size: 1.75rem !important;
  font-weight: 700;
  color: var(--taxonomy-heading-primary, var(--ci-color-primary, #153558));
  margin: 0 0 0.5rem;
  line-height: 1.2;
  text-transform: none !important;
  letter-spacing: normal;
}

.cx-academy-page-header__description {
  font-size: 0.9375rem;
  color: var(--taxonomy-text-secondary, #283340);
  line-height: 1.5;
  margin: 0 0 0.875rem;
}

/* ── Element page: meta row ───────────────────────────────────────────────── */
.cx-academy-page-header__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
}

.cx-academy-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  font-size: 0.8125rem;
}

.cx-academy-meta-row dt {
  font-weight: 500;
  color: var(--taxonomy-text-muted, #6c757d);
}

.cx-academy-meta-row dt::after {
  content: ":";
}

.cx-academy-meta-row dd {
  display: flex;
  align-items: center;
  gap: var(--cx-academy-gap-xs);
  margin: 0;
}

.cx-academy-meta-row__codes code + code {
  margin-left: 0.35rem;
}

.cx-academy-page-header__id {
  font-family: monospace;
  font-size: 0.875rem;
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  padding: 0.1rem 0.4rem;
  border-radius: var(--cx-academy-radius);
}

.cx-academy-copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.12));
  border-radius: var(--cx-academy-radius);
  cursor: pointer;
  color: var(--taxonomy-text-muted, #6c757d);
  transition: all 0.15s ease;
}

.cx-academy-copy-btn:hover {
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-color: var(--ci-color-secondary, #4ec1ec);
  color: var(--ci-color-secondary, #4ec1ec);
}

.cx-academy-copy-btn--copied {
  background: rgba(0, 150, 136, 0.1);
  border-color: var(--ci-color-success, #009688);
  color: var(--ci-color-success, #009688);
}

/* ── Element page: tab content headings (override global uppercase h2/h3) ─── */
.cx-academy-element-page .gdoc-markdown h2,
.cx-academy-element-page .gdoc-markdown h3 {
  text-transform: none !important;
  letter-spacing: normal;
}

.cx-academy-element-page .gdoc-markdown h2 {
  font-size: 1.125rem !important;
}

.cx-academy-element-page .gdoc-markdown h3 {
  font-size: 1rem !important;
}

/* ── Property sections (required / optional) ──────────────────────────────── */
.cx-academy-props-section {
  margin-bottom: 1rem;
}

.cx-academy-props-section__heading {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
  padding-bottom: 0.375rem;
  border-bottom: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
}

.cx-academy-props-section__heading--required {
  color: var(--ci-color-warning, #ffb300);
}

.cx-academy-props-section__heading--optional {
  color: var(--taxonomy-text-muted, #6c757d);
}

.cx-academy-props-section__intro {
  margin: 0 0 0.75rem;
  max-width: 72ch;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--taxonomy-text-secondary, #283340);
}


/* ── Expression cards ─────────────────────────────────────────────────────── */
.cx-expression-cards {
  display: flex;
  flex-direction: column;
  gap: var(--cx-academy-gap-sm);
  margin: 0.75rem 0;
}

.cx-expression-card {
  display: flex;
  flex-direction: column;
  gap: var(--cx-academy-gap-sm);
  padding: 0.625rem 0.75rem;
  background: var(--taxonomy-bg-card, #fff);
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.08));
  border-radius: var(--cx-academy-radius);
  font-size: 0.8125rem;
}

.cx-expression-card__row {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr auto min-content;
  align-items: start;
  gap: var(--cx-academy-gap-sm);
  min-width: 0;
}

@media (max-width: 768px) {
  .cx-expression-card__row {
    grid-template-columns: 1fr 1fr;
  }

  .cx-expression-card__example,
  .cx-expression-card__copy {
    grid-column: 1 / -1;
  }

  .cx-expression-card__copy {
    justify-self: start;
  }
}

.cx-expression-card__key {
  font-family: monospace;
  font-weight: 600;
  color: var(--taxonomy-heading-primary, var(--ci-color-primary, #153558));
  min-width: 0;
}

.cx-expression-card__type {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--ci-color-tertiary, #3880ad);
  min-width: 0;
}

.cx-expression-card__meaning {
  color: var(--taxonomy-text-secondary, #283340);
  line-height: 1.4;
  min-width: 0;
}

.cx-expression-card__example {
  min-width: 0;
  overflow-wrap: anywhere;
}

.cx-expression-card__example code {
  font-size: 0.75rem;
  word-break: break-word;
}

.cx-expression-card__copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--taxonomy-border-light, rgba(64, 66, 74, 0.12));
  border-radius: var(--cx-academy-radius);
  cursor: pointer;
  color: var(--taxonomy-text-muted, #6c757d);
  flex-shrink: 0;
  transition: all 0.15s ease;
}

.cx-expression-card__copy:hover,
.cx-expression-card__copy:focus-visible {
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-color: var(--ci-color-secondary, #4ec1ec);
  color: var(--ci-color-secondary, #4ec1ec);
  outline: none;
}

.cx-expression-prefix {
  font-size: 0.8125rem;
  color: var(--taxonomy-text-muted, #6c757d);
  font-family: monospace;
  margin-bottom: var(--cx-academy-gap-xs);
  padding: 0.375rem 0.5rem;
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-radius: var(--cx-academy-radius);
}

/* ── Property detail blocks (choices / constraints / example) ─────────────── */
/* Fed from agentGuidance.configFields via data/properties/<element>.json. */
.cx-props__choices,
.cx-props__constraints,
.cx-props__antipatterns,
.cx-props__example {
  margin-top: 0.5rem;
}

.cx-props__label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--taxonomy-text-muted, #6c757d);
  margin-bottom: 0.25rem;
}

.cx-props__choices-list,
.cx-props__constraints-list,
.cx-props__antipatterns-list {
  margin: 0;
  padding-left: 1.1rem;
  line-height: 1.5;
}

.cx-props__choices-list li,
.cx-props__constraints-list li,
.cx-props__antipatterns-list li {
  margin: 0.125rem 0;
}

/* "Avoid" reads as a warning, distinct from the neutral "Good to know". */
.cx-props__antipatterns .cx-props__label {
  color: var(--taxonomy-text-warning, #b3541e);
}

.cx-props__choices-list code {
  font-weight: 600;
}

.cx-props__example code {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-radius: var(--cx-academy-radius);
  word-break: break-word;
}

/* Authored `selectorUsage.when` — when a builder reaches for this value. */
.cx-expression-card__when {
  margin: 0;
  padding: 0.5rem 0.625rem;
  max-width: 72ch;
  font-size: 0.8125rem;
  color: var(--taxonomy-text-secondary, #283340);
  line-height: 1.45;
  background: var(--taxonomy-bg-tag, rgba(78, 193, 236, 0.08));
  border-radius: var(--cx-academy-radius);
}

.cx-expression-card__when-label {
  display: inline-block;
  margin-right: 0.35rem;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--taxonomy-text-muted, #6c757d);
}