/* ================================================================
   Experiments — bespoke design-system styles
   ----------------------------------------------------------------
   Constructivist surfaces: sharp corners, generous whitespace,
   tone-driven alternation (light / dark / accent), signal-red as
   the load-bearing emphasis. Layered on top of tokens-extras.css
   + typography.css; assumes the design tokens are already loaded
   by master.cshtml.

   Load order (see master.cshtml @section Styles):
     styles.css → typography.css → tokens-extras.css
     → site-chrome.css → experiments.css
   ================================================================ */

/* ── Scope reset: every surface in the experiments scope is square */
/* Deferral (LOW perf): `main.experiments *` descendant-universal selector — kept for square-corner coverage on every nested element; cost ~6–9ms on first style recalc. */
main.experiments,
main.experiments * {
  border-radius: 0;
}

/* ── Page shell ─────────────────────────────────────────────── */
main.experiments {
  display: block;
  background: var(--surface-primary);
  color: var(--text-primary);
}

/* The Umbraco Block Grid markup is opaque; we map its CSS custom
   properties onto a real 12-track grid so column-span values
   chosen in the backoffice (12 / 8 / 6 / 4) actually take effect. */
main.experiments .umb-block-grid {
  display: block;
}

main.experiments .umb-block-grid__layout-container {
  display: grid;
  grid-template-columns: repeat(var(--umb-block-grid--grid-columns, 12), 1fr);
  gap: var(--space-lg);
}

main.experiments .umb-block-grid__layout-item {
  grid-column: span var(--umb-block-grid--item-column-span, 12);
  min-width: 0;
  max-width: 100%;
}

main.experiments .umb-block-grid__area-container {
  display: grid;
  grid-template-columns: repeat(var(--umb-block-grid--area-grid-columns, 12), 1fr);
  gap: var(--space-lg);
  width: 100%;
}

main.experiments .umb-block-grid__area {
  grid-column: span var(--umb-block-grid--area-column-span, 12);
  min-width: 0;
}

/* Collapse Block-Grid spans on phone viewports. The structural
   intent (3-card row, side-by-side pull quote) reads better as a
   single column on phones than a half-broken multi-column layout.
   Tablet (≥600px) keeps a 2-column intermediate — see below. */
@media (max-width: 599px) {
  main.experiments .umb-block-grid__layout-container,
  main.experiments .umb-block-grid__area-container {
    grid-template-columns: 1fr;
  }
  main.experiments .umb-block-grid__layout-item,
  main.experiments .umb-block-grid__area {
    grid-column: 1 / -1;
  }
}

/* Two-column intermediate at tablet for card / stat rows. */
@media (min-width: 600px) and (max-width: 1099px) {
  main.experiments .umb-block-grid__layout-container {
    grid-template-columns: repeat(6, 1fr);
  }
  main.experiments .umb-block-grid__layout-item {
    grid-column: span min(6, var(--umb-block-grid--item-column-span, 12));
  }
  /* Cards (4-span on a 12-col grid → 2-span on a 6-col grid) */
  main.experiments .umb-block-grid__layout-item[data-col-span="4"] {
    grid-column: span 3;
  }
  /* 8 / 4 split → still 2 columns */
  main.experiments .umb-block-grid__layout-item[data-col-span="8"],
  main.experiments .umb-block-grid__layout-item[data-col-span="6"] {
    grid-column: span 6;
  }
}

/* ── Hero band ──────────────────────────────────────────────── */
.exp-hero {
  position: relative;
  isolation: isolate;
  padding: var(--space-2xl) var(--space-lg);
  background-color: var(--surface-dark);
  background-image: linear-gradient(var(--surface-overlay), var(--surface-overlay)), var(--exp-hero-bg, none);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--text-on-dark);
  text-align: left;
  overflow: hidden;
}

.exp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--pattern-scatter-dark);
  background-size: cover;
  background-position: left center;
  background-repeat: no-repeat;
  opacity: 0.25;
  pointer-events: none;
  z-index: -1;
}

.exp-hero__inner {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  position: relative;
}

.exp-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-on-dark-secondary);
  margin: 0 0 var(--space-lg);
}

.exp-hero__headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.75rem, 1.5rem + 4.5vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--text-on-dark);
  margin: 0 0 var(--space-md);
  max-width: 16ch;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.exp-hero__subhead {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1.125rem, 1rem + 0.4vw, 1.375rem);
  line-height: 1.5;
  color: var(--text-on-dark);
  max-width: 52ch;
  margin: 0;
}

.exp-hero__accent {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-top: var(--space-xl);
  padding-left: var(--space-sm);
  border-left: 3px solid var(--accent-primary);
}

@media (max-width: 820px) {
  .exp-hero {
    padding: var(--space-xl) var(--space-md);
  }
}

/* ── Pillar — base ──────────────────────────────────────────── */
.exp-pillar {
  position: relative;
  padding: var(--space-2xl) var(--space-lg);
}

.exp-pillar__head {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}

.exp-pillar__number {
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(2rem, 1.25rem + 3vw, 3.5rem);
  line-height: 1;
  color: var(--accent-primary);
  letter-spacing: -0.02em;
}

.exp-pillar__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0;
}

.exp-pillar__headline {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.85rem, 1.4rem + 1.4vw, 2.75rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--text-primary);
  margin: var(--space-sm) 0 0;
  max-width: 26ch;
}

.exp-pillar__lede {
  font-family: var(--font-display);
  font-weight: 300;
  font-style: italic;
  font-size: clamp(1.1rem, 1rem + 0.35vw, 1.375rem);
  line-height: 1.45;
  color: var(--text-secondary);
  margin: var(--space-md) 0 0;
  max-width: 52ch;
}

.exp-pillar__intro {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text-primary);
  max-width: 52ch;
  margin: 0 0 var(--space-md);
}

/* Constrain pillar body to a readable measure but allow grid items
   to span the wrap. The pillar layout-container itself sits inside
   the wrap so multi-column rows (cards, stats) get the full width. */
.exp-pillar > .umb-block-grid__area-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (max-width: 820px) {
  .exp-pillar {
    padding: var(--space-xl) var(--space-md);
  }
  .exp-pillar__head {
    margin-bottom: var(--space-lg);
  }
}

/* ── Pillar tones ──────────────────────────────────────────── */
.exp-pillar--light {
  background-color: var(--surface-primary);
}

/* Subtle alternation: every other light pillar uses the stone-warm
   secondary surface so the page reads as bands without becoming
   busy. Achieved with a thin band rather than checkerboard tones. */
.exp-pillar--light:nth-of-type(even) {
  background-color: var(--surface-secondary);
}

.exp-pillar--dark {
  background-color: var(--surface-dark);
  color: var(--text-on-dark);
}

.exp-pillar--dark .exp-pillar__eyebrow {
  color: var(--text-on-dark-secondary);
}

.exp-pillar--dark .exp-pillar__headline,
.exp-pillar--dark .exp-pillar__lede,
.exp-pillar--dark .exp-pillar__intro {
  color: var(--text-on-dark);
}

.exp-pillar--dark .exp-pillar__lede {
  color: var(--text-on-dark-secondary);
}

.exp-pillar--accent {
  background-color: var(--accent-primary);
  color: var(--text-on-dark);
}

.exp-pillar--accent .exp-pillar__eyebrow,
.exp-pillar--accent .exp-pillar__number {
  color: var(--text-on-dark);
}

.exp-pillar--accent .exp-pillar__headline,
.exp-pillar--accent .exp-pillar__lede,
.exp-pillar--accent .exp-pillar__intro {
  color: var(--text-on-dark);
}

.exp-pillar--accent .exp-pillar__lede {
  color: var(--text-on-dark);
}

/* Anchor links inherit on-dark surfaces. */
.exp-pillar--dark a,
.exp-pillar--accent a {
  color: var(--text-on-dark);
  text-decoration-color: rgba(240, 237, 232, 0.55);
}

.exp-pillar--dark a:hover,
.exp-pillar--accent a:hover {
  text-decoration-color: var(--text-on-dark);
}

.exp-pillar--dark a:focus-visible,
.exp-pillar--accent a:focus-visible {
  outline-color: var(--text-on-dark);
}

/* ── Feature cards ─────────────────────────────────────────── */
.exp-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  height: 100%;
  padding: var(--space-lg);
  background-color: var(--surface-primary);
  border: 1px solid var(--border-light);
  box-shadow: none;
  transition: transform var(--ease-standard), box-shadow var(--ease-standard), border-color var(--ease-standard);
}

.exp-pillar--light:nth-of-type(even) .exp-card {
  background-color: var(--surface-primary);
}

.exp-card:hover,
.exp-card:focus-within {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px -12px rgba(26, 26, 30, 0.35);
  border-color: var(--border-medium);
}

.exp-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  width: 2rem;
  height: 2rem;
  background-color: var(--accent-primary);
  color: var(--text-on-dark);
}

.exp-card__icon--fa {
  font-family: inherit;
  font-size: 1.125rem;
  letter-spacing: normal;
  text-transform: none;
  width: 2.5rem;
  height: 2.5rem;
}

.exp-card__icon--fa .svg-inline--fa,
.exp-card__icon--fa i {
  width: 1em;
  height: 1em;
  line-height: 1;
}

.exp-card__eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: 0;
}

.exp-card__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.5rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: none;
  color: var(--text-primary);
  margin: 0;
}

.exp-card__body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

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

.exp-card__link {
  margin-top: auto;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent-primary);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

.exp-card__link:hover {
  color: var(--accent-primary-hover);
  text-decoration-thickness: 2px;
}

/* ── Command badge ─────────────────────────────────────────── */
.exp-cmd {
  position: relative;
  padding: var(--space-md) var(--space-md) var(--space-md) calc(var(--space-md) + 12px);
  background-color: var(--surface-secondary);
  border: 1px solid var(--border-light);
}

.exp-cmd::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background-color: var(--accent-primary);
}

.exp-cmd__name {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  background-color: var(--surface-primary);
  padding: 2px var(--space-sm);
  border: 1px solid var(--border-light);
  margin-bottom: var(--space-sm);
}

.exp-cmd__oneliner {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--text-primary);
  margin: 0;
}

.exp-cmd__meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin: var(--space-sm) 0 0;
}

/* ── Stat callout ──────────────────────────────────────────── */
.exp-stat {
  margin: 0;
  padding: var(--space-lg) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.exp-stat__display {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.exp-stat__figure {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(3rem, 2rem + 4vw, 5.5rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--accent-secondary);
}

.exp-stat__unit {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.exp-stat__supporting {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
  max-width: 32ch;
}

/* Stat tones: signal red on dark, on-dark on accent (red on red
   would vanish), warm bronze stays as the default for light. */
.exp-pillar--dark .exp-stat__figure {
  color: var(--accent-primary);
}

.exp-pillar--accent .exp-stat__figure {
  color: var(--text-on-dark);
}

.exp-pillar--dark .exp-stat__unit,
.exp-pillar--dark .exp-stat__supporting {
  color: var(--text-on-dark-secondary);
}

.exp-pillar--accent .exp-stat__unit,
.exp-pillar--accent .exp-stat__supporting {
  color: var(--text-on-dark);
}

/* ── Pull quote ────────────────────────────────────────────── */
.exp-pullquote {
  margin: var(--space-lg) 0;
  padding: var(--space-md) 0 var(--space-md) var(--space-lg);
  border-left: 3px solid var(--accent-primary);
}

.exp-pullquote__quote {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 300;
  font-size: clamp(1.375rem, 1.1rem + 1vw, 1.875rem);
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  margin: 0 0 var(--space-md);
  padding: 0;
  border: 0;
}

.exp-pullquote__attribution {
  display: flex;
  flex-direction: column;
  gap: 0.1em;
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.exp-pullquote__name {
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.exp-pullquote__role {
  font-style: italic;
  color: var(--text-tertiary);
}

/* Negative-left-margin treatment on large screens: pull the quote
   into the editorial gutter. On small viewports the negative margin
   collapses and the left border becomes the sole identifier. */
@media (min-width: 1100px) {
  .exp-pullquote {
    margin-left: calc(-1 * var(--space-xl));
    padding-left: var(--space-xl);
  }
}

.exp-pullquote--dark {
  border-left-color: var(--text-on-dark);
}
.exp-pillar--dark .exp-pullquote__quote,
.exp-pullquote--dark .exp-pullquote__quote {
  color: var(--text-on-dark);
}
.exp-pillar--dark .exp-pullquote__name,
.exp-pullquote--dark .exp-pullquote__name {
  color: var(--text-on-dark);
}
.exp-pillar--dark .exp-pullquote__role,
.exp-pullquote--dark .exp-pullquote__role {
  color: var(--text-on-dark-secondary);
}

.exp-pullquote--accent {
  border-left-color: var(--text-on-dark);
}
.exp-pillar--accent .exp-pullquote__quote,
.exp-pullquote--accent .exp-pullquote__quote {
  color: var(--text-on-dark);
}
.exp-pillar--accent .exp-pullquote__attribution,
.exp-pullquote--accent .exp-pullquote__attribution {
  color: var(--text-on-dark);
}
.exp-pillar--accent .exp-pullquote__name,
.exp-pullquote--accent .exp-pullquote__name {
  color: var(--text-on-dark);
}
.exp-pillar--accent .exp-pullquote__role,
.exp-pullquote--accent .exp-pullquote__role {
  color: var(--text-on-dark);
}

/* ── Timeline ──────────────────────────────────────────────── */
/* Timeline rows render inside a Block-Grid layout-container as
   <div> children of a generated wrapper. Style each row as a self-
   contained grid so dates and bodies align across rows. */
.exp-timeline__row {
  display: grid;
  grid-template-columns: 6em 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border-light);
}

.exp-timeline__row:first-child {
  border-top: 0;
}

.exp-pillar--dark .exp-timeline__row,
.exp-pillar--accent .exp-timeline__row {
  border-top-color: var(--border-dark);
}

.exp-timeline__date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  padding-top: 0.4em;
}

.exp-pillar--dark .exp-timeline__date,
.exp-pillar--accent .exp-timeline__date {
  color: var(--text-on-dark-secondary);
}

.exp-timeline__body {
  min-width: 0;
}

.exp-timeline__feature {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.25rem;
  line-height: 1.25;
  text-transform: none;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-xs);
  color: var(--text-primary);
}

.exp-timeline__feature a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  text-decoration-color: rgba(139, 107, 74, 0.4);
}

.exp-timeline__feature a:hover {
  text-decoration-color: currentColor;
  text-decoration-thickness: 2px;
}

.exp-timeline__oneliner {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--text-secondary);
  margin: 0;
}

.exp-pillar--dark .exp-timeline__feature,
.exp-pillar--accent .exp-timeline__feature {
  color: var(--text-on-dark);
}

.exp-pillar--dark .exp-timeline__oneliner,
.exp-pillar--accent .exp-timeline__oneliner {
  color: var(--text-on-dark-secondary);
}

@media (max-width: 640px) {
  .exp-timeline__row {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }
  .exp-timeline__date {
    padding-top: 0;
  }
}

/* ── Embedded sketch ───────────────────────────────────────── */
.exp-sketch {
  margin: 0;
  padding: var(--space-md);
  background-color: var(--dc-obsidian);
  border: 1px solid var(--dc-graphite);
  color: var(--text-on-dark);
  max-width: 100%;
}

.exp-sketch__slot {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--dc-obsidian);
  overflow: hidden;
}

.exp-sketch__slot iframe,
.exp-sketch__poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
  display: block;
}

.exp-sketch__poster {
  z-index: 1;
  transition: opacity var(--ease-emphasis);
}

.exp-sketch__slot.is-running .exp-sketch__poster {
  opacity: 0;
}

.exp-sketch__slot iframe {
  z-index: 0;
}

.exp-sketch__caption {
  margin-top: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-on-dark-secondary);
}

/* ── Closing band CTA ──────────────────────────────────────── */
.exp-closing__cta-wrap {
  text-align: center;
  margin: var(--space-lg) 0 0;
}

.exp-cta {
  display: inline-block;
  padding: var(--space-md) calc(var(--space-lg) + var(--space-sm));
  background-color: var(--accent-primary);
  color: var(--text-on-dark);
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--accent-primary);
  transition: background-color var(--ease-micro), color var(--ease-micro), border-color var(--ease-micro);
}

.exp-cta:hover,
.exp-cta:focus-visible {
  background-color: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  color: var(--text-on-dark);
  text-decoration: none;
}

.exp-cta:focus-visible {
  outline: 2px solid var(--text-on-dark);
  outline-offset: 3px;
}

.exp-pillar--dark .exp-cta {
  background-color: var(--accent-primary);
  color: var(--text-on-dark);
}

/* ── Rich text inside the experiments scope ────────────────── */
main.experiments .richtext {
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: inherit;
  max-width: 60ch;
}

main.experiments .richtext p {
  margin: 0 0 var(--space-md);
}

main.experiments .richtext a {
  color: var(--accent-primary);
  text-decoration-color: rgba(194, 61, 46, 0.4);
}

main.experiments .richtext a:hover {
  text-decoration-color: currentColor;
  text-decoration-thickness: 2px;
}

.exp-pillar--dark .richtext a,
.exp-pillar--accent .richtext a {
  color: var(--text-on-dark);
  text-decoration-color: rgba(240, 237, 232, 0.5);
}

/* When an .exp-cta lives inside a rich-text block, the generic
   `main.experiments .richtext a` rule wins on specificity (0,2,2)
   and paints the text the same red as the button background. Bump
   the CTA's own selector to (0,3,2) so the button stays legible. */
main.experiments .richtext a.exp-cta,
main.experiments .richtext a.exp-cta:visited {
  color: var(--text-on-dark);
  text-decoration: none;
  text-decoration-color: transparent;
}

main.experiments .richtext a.exp-cta:hover,
main.experiments .richtext a.exp-cta:focus-visible {
  color: var(--text-on-dark);
  text-decoration: none;
}

/* Honour OS reduced-motion preference for all custom transitions. */
@media (prefers-reduced-motion: reduce) {
  .exp-card,
  .exp-sketch__poster,
  .exp-cta {
    transition: none;
  }
}