/* UDX Visual Story toolkit. Rules that hide content before enhancement are gated on
   html.udx-vs, which visual-story.js adds, so markup stays readable without JavaScript. */
.udx-story {
  --udx-story-accent: #204aff;
  --udx-story-ink: #19234c;
  --udx-story-muted: #5b6378;
  --udx-story-line: #dfe4ef;
  --udx-story-surface: #f4f6fc;
  --udx-story-sticky-top: 100px;
  --udx-story-beat-height: 34vh;
  display: grid;
  grid-template-columns: minmax(260px, .72fr) minmax(0, 1.28fr);
  gap: 64px;
  align-items: start;
}
.udx-story-beats { min-width: 0; }
.udx-story-beat {
  min-height: var(--udx-story-beat-height);
  padding: 0 0 48px;
  scroll-margin-top: var(--udx-story-sticky-top);
}
.udx-beat-label {
  display: block;
  margin-bottom: 16px;
  color: var(--udx-story-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.udx-story-beat h3 { margin: 0 0 14px; color: var(--udx-story-muted); font-size: 32px; font-weight: 500; letter-spacing: -.03em; line-height: 1.12; transition: color .3s ease; }
.udx-story-beat.is-active h3 { color: var(--udx-story-ink); }
.udx-story-beat p { max-width: 390px; margin: 0; color: var(--udx-story-muted); font-size: 16px; }
.udx-story-stage-wrap { position: sticky; top: var(--udx-story-sticky-top); min-width: 0; align-self: start; }
.udx-story-stage {
  position: relative;
  aspect-ratio: var(--udx-story-stage-ratio, 16 / 10);
  border: 1px solid var(--udx-story-line);
  background: var(--udx-story-surface);
  overflow: hidden;
}
.udx-story-figure {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  margin: 0;
  padding: 20px;
  opacity: 0;
  transform: translateY(18px) scale(.985);
  pointer-events: none;
  transition: opacity .45s ease, transform .45s ease;
}
.udx-story-figure.is-active { opacity: 1; transform: none; pointer-events: auto; }
.udx-story-figure img { flex: 1 1 0; width: 100%; height: 0; min-height: 0; object-fit: contain; }
.udx-story-figure figcaption { flex: 0 0 auto; }
.udx-story-figure figcaption,
.udx-beat-media figcaption { padding-top: 14px; color: var(--udx-story-muted); font-size: 12px; }
.udx-story-nav { display: grid; grid-template-columns: repeat(var(--udx-story-scenes, 5), minmax(0, 1fr)); border-bottom: 1px solid var(--udx-story-line); }
.udx-story-nav a {
  padding: 12px 4px;
  border-bottom: 2px solid transparent;
  color: var(--udx-story-muted);
  font-size: 11px;
  text-align: center;
  text-decoration: none;
}
.udx-story-nav a span { display: block; margin-bottom: 3px; color: #6b7590; font-size: 9px; }
.udx-story-nav a[aria-current="step"] { border-bottom-color: var(--udx-story-accent); color: var(--udx-story-accent); }
/* Without the engine the inline media is the presentation and the sticky stage stays out of the way. */
html:not(.udx-vs) .udx-story-stage-wrap { display: none; }
html:not(.udx-vs) .udx-story { grid-template-columns: 1fr; }
.udx-vs .udx-beat-media { display: none; }
.udx-beat-media {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  margin: 24px 0 0;
  padding: 14px;
  border: 1px solid var(--udx-story-line);
  background: var(--udx-story-surface);
}
.udx-beat-media img { width: 100%; height: auto; object-fit: contain; }

/* Reveal: hidden only once the engine is present, revealed when scrolled into view. */
.udx-vs [data-udx-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; transition-delay: var(--udx-reveal-delay, 0s); }
.udx-vs [data-udx-reveal].is-visible { opacity: 1; transform: none; }

/* Timeline: items with data-udx-at appear in sequence while their scene is playing. */
.udx-vs [data-udx-timeline] [data-udx-at] { opacity: 0; transform: translateY(10px); transition: opacity .35s ease, transform .35s ease; pointer-events: none; }
.udx-vs [data-udx-timeline] [data-udx-at].is-on { opacity: 1; transform: none; pointer-events: auto; }
.udx-vs [data-udx-timeline] [data-udx-scene] { opacity: 0; visibility: hidden; transition: opacity .5s ease, visibility 0s linear .5s; }
.udx-vs [data-udx-timeline] [data-udx-scene].is-playing { opacity: 1; visibility: visible; transition: opacity .5s ease; }
html:not(.udx-vs) [data-udx-timeline] [data-udx-scene] ~ [data-udx-scene] { display: none; }
html:not(.udx-vs) [data-udx-timeline] [data-udx-off] { display: none; }

/* Marquee: the track is cloned once so the loop is seamless. */
[data-udx-marquee] { --udx-marquee-gap: 16px; display: flex; gap: var(--udx-marquee-gap); overflow: hidden; }
[data-udx-marquee] > * { display: flex; flex: 0 0 auto; gap: var(--udx-marquee-gap); min-width: max-content; }
[data-udx-marquee].is-ready > * { animation: udx-marquee var(--udx-marquee-duration, 40s) linear infinite; }
[data-udx-marquee][data-udx-marquee-reverse].is-ready > * { animation-direction: reverse; }
[data-udx-marquee]:hover > *, [data-udx-marquee]:focus-within > * { animation-play-state: paused; }
@keyframes udx-marquee { to { transform: translateX(calc(-100% - var(--udx-marquee-gap))); } }

/* Draw: connector paths with pathLength="1" and class udx-draw-path draw on when the figure enters view. */
.udx-vs [data-udx-draw] .udx-draw-path { stroke-dasharray: 1; stroke-dashoffset: 1; transition: stroke-dashoffset 1.1s ease; transition-delay: var(--udx-draw-delay, 0s); }
.udx-vs [data-udx-draw].is-drawn .udx-draw-path { stroke-dashoffset: 0; }

@media (max-width: 900px) {
  .udx-story { grid-template-columns: 1fr; gap: 0; }
  .udx-story-stage-wrap { display: none; }
  .udx-story-beat { min-height: 0; padding-bottom: 52px; }
  .udx-story-beat h3 { color: var(--udx-story-ink); }
  .udx-vs .udx-beat-media { display: grid; }
  .udx-vs [data-udx-reveal] { opacity: 1; transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .udx-story *, .udx-story *::before, .udx-story *::after,
  [data-udx-reveal], [data-udx-timeline] *, [data-udx-draw] .udx-draw-path { animation: none !important; transition: none !important; }
  .udx-story { grid-template-columns: 1fr; gap: 0; }
  .udx-story-stage-wrap { display: none; }
  .udx-story-beat { min-height: 0; padding-bottom: 52px; }
  .udx-story-beat h3 { color: var(--udx-story-ink); }
  .udx-vs .udx-beat-media { display: grid; }
  .udx-vs [data-udx-reveal] { opacity: 1; transform: none; }
  .udx-vs [data-udx-draw] .udx-draw-path { stroke-dashoffset: 0; }
  [data-udx-marquee] { flex-wrap: wrap; }
  [data-udx-marquee] > * { flex-wrap: wrap; min-width: 0; animation: none !important; }
  [data-udx-marquee] > [data-udx-marquee-clone] { display: none; }
}