/* Resource Detail V1 Page Art Direction.
 * Public modules, cards, feeds, CTA controls and content-document internals
 * remain owned by frontend-v2. This file owns only page composition/rhythm. */

.resource-detail-v1-page {
  min-width: 0;
  background: var(--ui-color-canvas, #fff);
}

.resource-detail-v1 {
  --resource-detail-narrow-reading-max: 680px;
  --resource-detail-reading-max: 820px;
  --resource-detail-wide-reading-max: 980px;
  min-width: 0;
  overflow: clip;
  color: var(--ui-color-text, #334155);
  background: var(--ui-color-canvas, #fff);
}

.resource-detail-v1__breadcrumb-bar {
  border-bottom: 1px solid color-mix(in srgb, var(--ui-color-border, #e2e8f0) 78%, transparent);
  background: color-mix(in srgb, var(--ui-color-canvas, #fff) 94%, transparent);
}

.resource-detail-v1__hero {
  --resource-detail-hero-title-inherit: var(--ui-color-text-strong, #0f172a);
  --resource-detail-hero-summary-inherit: var(--ui-color-text, #334155);
  --resource-detail-hero-meta-color: var(--ui-color-text-muted, #64748b);
  position: relative;
  overflow: hidden;
  padding: clamp(48px, 5vw, 72px) 0 clamp(52px, 5.8vw, 80px);
  background: var(--ui-color-surface, #fff);
  isolation: isolate;
}

.resource-detail-v1 :is(
  .resource-detail-v1__hero,
  .resource-detail-v1__content,
  .resource-detail-v1__navigation
)[data-section-background="white"] {
  background: #fff;
}

.resource-detail-v1 :is(
  .resource-detail-v1__hero,
  .resource-detail-v1__content,
  .resource-detail-v1__navigation
)[data-section-background="surface"] {
  background: var(--ui-color-surface-muted, #f8fafc);
}

.resource-detail-v1 :is(
  .resource-detail-v1__hero,
  .resource-detail-v1__content,
  .resource-detail-v1__navigation
)[data-section-background="accent-soft"] {
  background: color-mix(in srgb, var(--theme-accent, #7c3aed) 10%, var(--ui-color-surface, #fff));
}

.resource-detail-v1 :is(
  .resource-detail-v1__hero,
  .resource-detail-v1__content,
  .resource-detail-v1__navigation
)[data-section-background="custom"][data-section-background-fill="solid"] {
  background: var(--resource-detail-section-background-start, #fff);
}

.resource-detail-v1 :is(
  .resource-detail-v1__hero,
  .resource-detail-v1__content,
  .resource-detail-v1__navigation
)[data-section-background="custom"][data-section-background-fill="gradient"] {
  background: linear-gradient(
    var(--resource-detail-section-background-angle, 115deg),
    var(--resource-detail-section-background-start, #fff),
    var(--resource-detail-section-background-end, #f5f3ff)
  );
}

.resource-detail-v1__hero::after {
  position: absolute;
  z-index: -1;
  top: -36%;
  right: -10%;
  width: min(46vw, 680px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--theme-accent, #7c3aed) 18%, transparent), transparent 68%);
  content: "";
  pointer-events: none;
}

.resource-detail-v1__hero:not([data-section-background="inherit"])::after {
  opacity: 0;
}

.resource-detail-v1__hero[data-foreground="light"] {
  --resource-detail-hero-title-inherit: var(--ui-color-on-accent, #fff);
  --resource-detail-hero-summary-inherit: rgba(255, 255, 255, .82);
  --resource-detail-hero-meta-color: rgba(255, 255, 255, .72);
  color: #e2e8f0;
}

.resource-detail-v1__hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 380px);
  column-gap: clamp(32px, 4vw, 56px);
  row-gap: 20px;
  align-items: start;
}

.resource-detail-v1__taxonomy-row {
  grid-column: 1 / -1;
  text-align: left;
}

.resource-detail-v1__hero-copy {
  max-width: 760px;
  text-align: left;
}

.resource-detail-v1__hero[data-title-align="center"] :is(
  .resource-detail-v1__taxonomy-row,
  .resource-detail-v1__hero-copy
) {
  text-align: center;
}

.resource-detail-v1__hero[data-title-align="right"] :is(
  .resource-detail-v1__taxonomy-row,
  .resource-detail-v1__hero-copy
) {
  text-align: right;
}

.resource-detail-v1__taxonomy {
  margin-bottom: 0;
  text-decoration: none;
}

/* Related Resource identity and its entry share the final Section accent. */
.resource-detail-v1-page #resource-detail-related-resources .page-module-tags__item,
.resource-detail-v1-page #resource-detail-related-resources .page-module-card__link {
  color: var(--page-module-accent);
}

.resource-detail-v1__hero h1 {
  max-width: 24ch;
  margin: 0;
  color: var(--resource-detail-hero-title-color, var(--resource-detail-hero-title-inherit, var(--ui-color-text-strong, #0f172a)));
  font-size: min(var(--resource-detail-hero-title-size, 50px), clamp(38px, 4.5vw, 58px));
  font-weight: var(--resource-detail-hero-title-weight, 700);
  line-height: 1.16;
  letter-spacing: -.035em;
}

.resource-detail-v1__hero[data-title-align="center"] h1 {
  margin-inline: auto;
}

.resource-detail-v1__hero[data-title-align="right"] h1 {
  margin-inline: auto 0;
}

.resource-detail-v1__hero-summary {
  max-width: 760px;
  margin: 0;
  color: var(--resource-detail-hero-summary-color, var(--resource-detail-hero-summary-inherit, var(--ui-color-text, #334155)));
  font-size: var(--resource-detail-hero-summary-size, 16px);
  line-height: 1.8;
}

.resource-detail-v1__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: 22px 0 18px;
  color: var(--resource-detail-hero-meta-color, var(--ui-color-text-muted, #64748b));
  font-size: 13px;
}

.resource-detail-v1__hero[data-title-align="center"] .resource-detail-v1__meta {
  justify-content: center;
}

.resource-detail-v1__hero[data-title-align="right"] .resource-detail-v1__meta {
  justify-content: flex-end;
}

.resource-detail-v1__hero-media {
  align-self: start;
  overflow: hidden;
  margin: 0;
  border: 1px solid color-mix(in srgb, var(--theme-accent, #7c3aed) 16%, #fff);
  border-radius: var(--ui-radius-lg, 24px);
  background: var(--ui-color-surface, #f8fafc);
  box-shadow: 0 28px 70px rgba(15, 23, 42, .12);
}

.resource-detail-v1__hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.resource-detail-v1__hero:not(:has(.resource-detail-v1__hero-media)) .resource-detail-v1__hero-inner {
  grid-template-columns: minmax(0, 880px);
}

.resource-detail-v1__content {
  padding-block: clamp(58px, 7vw, 96px);
  border-top: 1px solid var(--ui-section-divider-color, var(--ui-color-border, #e2e8f0));
}

.resource-detail-v1__content[data-section-background="inherit"] {
  background: var(--ui-section-bg-brand-gradient, #f5f8f9);
}

.resource-detail-v1__content[data-foreground="light"] {
  --ui-color-text: rgba(255, 255, 255, .86);
  --ui-color-text-secondary: rgba(255, 255, 255, .82);
  --ui-color-text-strong: #fff;
  --ui-color-text-muted: rgba(255, 255, 255, .72);
  --ui-color-border: rgba(255, 255, 255, .2);
  --ui-color-surface-muted: rgba(255, 255, 255, .08);
}

.resource-detail-v1__reading-layout {
  --resource-detail-reading-column: var(--resource-detail-reading-max);
  display: grid;
  grid-template-columns: minmax(0, var(--resource-detail-reading-column)) minmax(190px, 230px);
  justify-content: space-between;
  gap: clamp(36px, 4vw, 64px);
  align-items: start;
}

.resource-detail-v1__content[data-reading-measure="wide"] .resource-detail-v1__reading-layout {
  --resource-detail-reading-column: var(--resource-detail-wide-reading-max);
}

.resource-detail-v1__content[data-reading-measure="narrow"] .resource-detail-v1__reading-layout {
  --resource-detail-reading-column: var(--resource-detail-narrow-reading-max);
}

.resource-detail-v1__content[data-desktop-toc="hide"] .resource-detail-v1__reading-layout {
  grid-template-columns: minmax(0, var(--resource-detail-reading-column));
  justify-content: center;
}

.resource-detail-v1__reading-document {
  min-width: 0;
  grid-column: 1;
  grid-row: 1;
}

.resource-detail-v1__reading-document .ui-content-document--measure {
  max-width: var(--resource-detail-reading-column);
  margin-inline: 0;
}

.resource-detail-v1__toc-rail {
  position: sticky;
  top: calc(var(--site-fixed-header-safe-area, 81px) + 15px);
  grid-column: 2;
  grid-row: 1;
  align-self: start;
  max-height: calc(100vh - var(--site-fixed-header-safe-area, 81px) - 47px);
}

.resource-detail-v1__toc-rail nav {
  max-height: calc(100vh - var(--site-fixed-header-safe-area, 81px) - 47px);
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-width: thin;
  padding: var(--ui-space-5, 20px) var(--ui-space-4, 16px);
  border: 1px solid var(--ui-color-border, #e2e8f0);
  border-radius: var(--ui-radius-md, 16px);
  background: transparent;
}

.resource-detail-v1__toc-rail strong {
  display: block;
  margin-bottom: var(--ui-space-5, 20px);
  color: var(--ui-color-text-strong, #0f172a);
  font-size: var(--ui-text-lg, 18px);
  font-weight: 700;
}

.resource-detail-v1__toc-rail ol,
.resource-detail-v1__toc-mobile ol {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.resource-detail-v1__toc-rail li[data-toc-level="3"],
.resource-detail-v1__toc-rail li[data-toc-level="4"],
.resource-detail-v1__toc-rail li[data-toc-level="5"],
.resource-detail-v1__toc-mobile li[data-toc-level="3"],
.resource-detail-v1__toc-mobile li[data-toc-level="4"],
.resource-detail-v1__toc-mobile li[data-toc-level="5"] {
  padding-left: 14px;
}

.resource-detail-v1__toc-rail a,
.resource-detail-v1__toc-mobile a {
  display: block;
  padding: 4px 6px;
  border-radius: var(--ui-radius-xs, 4px);
  color: var(--ui-color-text-muted, #64748b);
  font-size: 13px;
  line-height: 1.45;
  text-decoration: none;
  overflow-wrap: anywhere;
  transition:
    color var(--ui-duration, 220ms) var(--ui-ease, ease),
    background-color var(--ui-duration, 220ms) var(--ui-ease, ease);
}

.resource-detail-v1__toc-rail li[data-toc-level="2"] > a,
.resource-detail-v1__toc-mobile li[data-toc-level="2"] > a {
  color: var(--ui-color-text-strong, #0f172a);
  font-size: 15px;
  font-weight: 600;
}

.resource-detail-v1__toc-rail a:hover,
.resource-detail-v1__toc-mobile a:hover {
  color: var(--ui-color-accent-deep, #6d28d9);
  background: color-mix(in srgb, var(--ui-color-accent, #7c3aed) 6%, transparent);
}

.resource-detail-v1__toc-rail li > a.is-active,
.resource-detail-v1__toc-mobile li > a.is-active,
.resource-detail-v1__toc-rail li > a[aria-current="location"],
.resource-detail-v1__toc-mobile li > a[aria-current="location"] {
  color: var(--ui-color-accent, #7c3aed);
  background: color-mix(in srgb, var(--ui-color-accent, #7c3aed) 10%, transparent);
  font-weight: 700;
}

.resource-detail-v1__toc-rail a:focus-visible,
.resource-detail-v1__toc-mobile a:focus-visible {
  outline: 2px solid var(--ui-color-accent, #7c3aed);
  outline-offset: 3px;
}

.resource-detail-v1__toc-mobile {
  display: none;
}

.resource-detail-v1__public-module {
  position: relative;
  border-top: 1px solid var(--ui-section-divider-color, var(--ui-color-border, #e2e8f0));
}

/* FAQ and Related Resources use the public ambient wash only for their
   inherited Page Art Direction. Explicit module backgrounds keep their
   canonical Public Module value. */
.resource-detail-v1-page #resource-detail-faq > .page-module,
.resource-detail-v1-page #resource-detail-related-resources > .page-module {
  --page-module-page-background: var(--ui-section-bg-ambient-wash);
}

.resource-detail-v1__navigation {
  padding-block: clamp(40px, 5vw, 68px);
  border-top: 1px solid var(--ui-section-divider-color, var(--ui-color-border, #e2e8f0));
}

.resource-detail-v1__navigation[data-section-background="inherit"] {
  background: var(--ui-section-bg-soft-blue, #f1f5f9);
}

.resource-detail-v1__navigation .ui-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.resource-detail-v1__navigation-link {
  display: grid;
  gap: 9px;
  min-height: 124px;
  padding: 24px 26px;
  border: 1px solid var(--ui-color-border, #e2e8f0);
  border-radius: var(--ui-radius-md, 16px);
  background: var(--ui-color-canvas, #fff);
  color: var(--ui-color-text-strong, #0f172a);
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.resource-detail-v1__navigation-link:hover {
  border-color: color-mix(in srgb, var(--theme-accent, #7c3aed) 42%, var(--ui-color-border, #e2e8f0));
  box-shadow: 0 14px 34px rgba(15, 23, 42, .08);
  transform: translateY(-2px);
}

.resource-detail-v1__navigation-link span {
  color: var(--theme-accent, #7c3aed);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
}

.resource-detail-v1__navigation-link strong {
  font-size: 17px;
  line-height: 1.55;
}

.resource-detail-v1__navigation-link.is-next {
  text-align: right;
}

@media (min-width: 1025px) {
  .resource-detail-v1__content[data-reading-measure="wide"]:not([data-desktop-toc="hide"])
    .resource-detail-v1__reading-layout {
    grid-template-columns: minmax(0, var(--resource-detail-reading-column)) minmax(152px, 160px);
    gap: clamp(24px, 1.5vw, 28px);
  }
}

@media (max-width: 1024px) {
  .resource-detail-v1__hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-detail-v1__hero-media {
    max-width: 620px;
  }

  .resource-detail-v1__reading-layout {
    grid-template-columns: minmax(0, 1fr) 200px;
    gap: 36px;
  }
}

@media (max-width: 900px) {
  .resource-detail-v1__toc-mobile {
    display: block;
    margin-bottom: var(--ui-space-7, 28px);
    border: 1px solid var(--ui-color-border, #e2e8f0);
    border-radius: var(--ui-radius-md, 16px);
    background: transparent;
  }

  .resource-detail-v1__content[data-mobile-toc="hidden"] .resource-detail-v1__toc-mobile {
    display: none;
  }

  .resource-detail-v1__toc-mobile summary {
    padding: var(--ui-space-4, 16px) var(--ui-space-5, 20px);
    color: var(--ui-color-text-strong, #0f172a);
    font-size: var(--ui-text-lg, 18px);
    font-weight: 700;
    cursor: pointer;
  }

  .resource-detail-v1__toc-mobile nav {
    padding: 0 var(--ui-space-5, 20px) var(--ui-space-5, 20px);
  }

  .resource-detail-v1__reading-layout {
    display: block;
  }

  .resource-detail-v1__toc-rail {
    display: none;
  }
}

@media (max-width: 768px) {
  .resource-detail-v1__hero {
    padding-block: 48px 56px;
  }

  .resource-detail-v1__hero h1 {
    font-size: min(var(--resource-detail-hero-title-size, 50px), 48px);
  }

  .resource-detail-v1__hero[data-mobile-title-align="left"] :is(
    .resource-detail-v1__taxonomy-row,
    .resource-detail-v1__hero-copy
  ) {
    text-align: left;
  }

  .resource-detail-v1__hero[data-mobile-title-align="left"] h1 {
    margin-inline: 0 auto;
  }

  .resource-detail-v1__hero[data-mobile-title-align="left"] .resource-detail-v1__meta {
    justify-content: flex-start;
  }

  .resource-detail-v1__hero[data-mobile-title-align="center"] :is(
    .resource-detail-v1__taxonomy-row,
    .resource-detail-v1__hero-copy
  ) {
    text-align: center;
  }

  .resource-detail-v1__hero[data-mobile-title-align="center"] h1 {
    margin-inline: auto;
  }

  .resource-detail-v1__hero[data-mobile-title-align="center"] .resource-detail-v1__meta {
    justify-content: center;
  }

  .resource-detail-v1__hero-media img {
    aspect-ratio: 16 / 10;
  }

  .resource-detail-v1__content {
    padding-block: 48px;
  }

  .resource-detail-v1__navigation .ui-container {
    grid-template-columns: minmax(0, 1fr);
  }

  .resource-detail-v1__navigation-link,
  .resource-detail-v1__navigation-link.is-next {
    min-height: 0;
    padding: 20px;
    text-align: left;
  }
}

@media (max-width: 430px) {
  

  .resource-detail-v1__meta {
    display: grid;
    gap: 7px;
    margin-bottom: 16px;
  }
}

/* Mobile H1 scale: preserve smaller editor values; desktop/tablet stay unchanged. */
@media (max-width: 767px) {
  .resource-detail-v1__hero h1 {
    font-size: min(var(--resource-detail-hero-title-size, 50px), 22px);
    line-height: 1.45;
  }
}

@media (max-width: 360px) {
  .resource-detail-v1__hero h1 {
    font-size: min(var(--resource-detail-hero-title-size, 50px), 22px);
  }
}