/* ELI5 scrollytelling — cinematic, few words, big pictures. */

:root {
  --eli5-bg: #070b1a;
  --eli5-bg-2: #121833;
  --eli5-ink: #f7f4ee;
  --eli5-muted: rgba(247, 244, 238, 0.72);
  --eli5-gold: #e8a54b;
  --eli5-gold-soft: #f0c27a;
  --eli5-glow: #ff6b3d;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

.eli5-body {
  margin: 0;
  min-height: 100vh;
  font-family: "Nunito", system-ui, sans-serif;
  color: var(--eli5-ink);
  background:
    radial-gradient(1200px 700px at 50% -10%, #1a2452 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 40%, #2a1540 0%, transparent 50%),
    var(--eli5-bg);
  overflow-x: hidden;
}

.eli5-stars {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    radial-gradient(1.5px 1.5px at 8% 12%, #fff 40%, transparent 50%),
    radial-gradient(1.5px 1.5px at 18% 48%, #fff 40%, transparent 50%),
    radial-gradient(1px 1px at 27% 22%, #fff 40%, transparent 50%),
    radial-gradient(2px 2px at 36% 78%, #fff 40%, transparent 50%),
    radial-gradient(1px 1px at 44% 35%, #fff 40%, transparent 50%),
    radial-gradient(1.5px 1.5px at 55% 14%, #fff 40%, transparent 50%),
    radial-gradient(1px 1px at 63% 62%, #fff 40%, transparent 50%),
    radial-gradient(2px 2px at 72% 28%, #fff 40%, transparent 50%),
    radial-gradient(1px 1px at 81% 84%, #fff 40%, transparent 50%),
    radial-gradient(1.5px 1.5px at 89% 41%, #fff 40%, transparent 50%),
    radial-gradient(1px 1px at 94% 9%, #fff 40%, transparent 50%),
    radial-gradient(1.5px 1.5px at 12% 88%, #fff 40%, transparent 50%);
  opacity: 0.55;
  animation: eli5-twinkle 5s ease-in-out infinite alternate;
}

@keyframes eli5-twinkle {
  to { opacity: 0.85; }
}

.eli5-skip {
  position: absolute;
  left: -9999px;
}

.eli5-skip:focus {
  left: 1rem;
  top: 1rem;
  z-index: 50;
  padding: 0.5rem 0.75rem;
  background: #fff;
  color: #111;
  border-radius: 0.5rem;
}

.eli5-top {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem;
  max-width: 920px;
  margin: 0 auto;
}

.eli5-top a {
  color: var(--eli5-muted);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 0.85rem;
  text-transform: uppercase;
}

.eli5-top a:hover,
.eli5-top a:focus-visible {
  color: var(--eli5-ink);
}

.eli5-top a:focus-visible {
  outline: 2px solid var(--eli5-gold);
  outline-offset: 4px;
  border-radius: 4px;
}

.eli5-top__brand {
  color: var(--eli5-gold) !important;
}

#eli5-main {
  position: relative;
  z-index: 1;
}

/* —— Index —— */
.eli5-index {
  max-width: 920px;
  margin: 0 auto;
  padding: 1rem 1.25rem 4rem;
}

.eli5-index__hero {
  text-align: center;
  padding: 2.5rem 0 3rem;
}

.eli5-index__eyebrow {
  color: var(--eli5-gold);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0 0 1rem;
}

.eli5-index__title {
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  font-weight: 800;
  line-height: 1.08;
  margin: 0 0 0.85rem;
  letter-spacing: -0.02em;
}

.eli5-index__dek {
  font-size: 1.15rem;
  color: var(--eli5-muted);
  max-width: 28rem;
  margin: 0 auto;
  line-height: 1.45;
}

.eli5-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.eli5-card {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 1.15rem 1.25rem;
  border-radius: 1.35rem;
  text-decoration: none;
  color: inherit;
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
  border: 1px solid rgba(255, 255, 255, 0.14);
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.eli5-card__art {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 1rem;
  margin-bottom: 0.55rem;
  position: relative;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 50% 45%, #25315f, #0b1229 72%);
}

.eli5-card__image {
  width: 42%;
  height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 8px 14px rgba(0, 0, 0, 0.32));
}

.eli5-card__go {
  margin-top: 0.35rem;
  color: var(--eli5-gold-soft);
  font-weight: 800;
  font-size: 0.9rem;
}

.eli5-card:hover,
.eli5-card:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(232, 165, 75, 0.55);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.03));
}

.eli5-card:focus-visible {
  outline: 2px solid var(--eli5-gold);
  outline-offset: 3px;
}

.eli5-card__eyebrow {
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin: 0 0 0.55rem;
}

.eli5-card__title {
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 0.5rem;
}

.eli5-card__blurb {
  margin: 0;
  color: var(--eli5-muted);
  font-size: 0.98rem;
  line-height: 1.4;
}

/* —— Story shell —— */
.eli5-story {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
}

.eli5-hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  text-align: center;
  padding: 1rem 0 3.5rem;
}

.eli5-hero__eyebrow {
  color: var(--eli5-gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  margin: 0 0 1.1rem;
}

.eli5-hero__title {
  font-size: clamp(2.5rem, 8vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  text-wrap: balance;
}

.eli5-hero__dek {
  font-size: clamp(1.1rem, 2.8vw, 1.35rem);
  color: var(--eli5-muted);
  max-width: 26rem;
  margin: 0 auto;
  line-height: 1.45;
  text-wrap: balance;
}

.eli5-scroll {
  margin-top: 3.5rem;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: rgba(247, 244, 238, 0.45);
  animation: eli5-bob 2.2s ease-in-out infinite;
}

@keyframes eli5-bob {
  0%, 100% { transform: translateY(0); opacity: 0.45; }
  50% { transform: translateY(6px); opacity: 0.8; }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }.eli5-stars,
  .eli5-scroll {
    animation: none;
  }
}

/* The trail sits above a hero that is nearly a full screen tall and bottom
   aligned, so it reads as a quiet line at the top of the view rather than as
   a bar pressed against the title. */
.eli5-crumbs {
  padding-top: 1.25rem;
  font-size: 0.82rem;
  color: var(--eli5-muted);
}

.eli5-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.eli5-crumbs li + li::before {
  content: "/";
  margin-right: 0.55rem;
  color: rgba(247, 244, 238, 0.35);
}

.eli5-crumbs a {
  color: inherit;
  font-weight: 700;
  text-decoration: none;
}

.eli5-crumbs a:hover,
.eli5-crumbs a:focus-visible {
  color: var(--eli5-gold);
}

.eli5-crumbs a:focus-visible {
  outline: 2px solid var(--eli5-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

.eli5-end {
  text-align: center;
  padding: 3rem 0 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 2rem;
}

.eli5-end p {
  color: var(--eli5-muted);
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
}

.eli5-end a {
  /* Two exits now -- the shelf and the index -- so they need to sit apart
     instead of running together on one line. */
  display: inline-block;
  margin: 0 0.9rem;
  color: var(--eli5-gold);
  font-weight: 800;
  text-decoration: none;
  letter-spacing: 0.04em;
}

.eli5-end a:hover,
.eli5-end a:focus-visible {
  color: var(--eli5-gold-soft);
}

.eli5-end a:focus-visible {
  outline: 2px solid var(--eli5-gold);
  outline-offset: 4px;
  border-radius: 4px;
}

/* —— The way out of the section ——
   ELI5 pages cannot load the site's Tailwind footer, so this is it in the
   section's own idiom. Quieter than .eli5-end above it: that one is the
   story's own invitation onward, this one is the site underneath. */
.eli5-site {
  position: relative;
  z-index: 2;
  margin-top: 4rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(7, 11, 26, 0.6);
}

.eli5-site__inner {
  max-width: 920px;
  margin: 0 auto;
  padding: 2.25rem 1.25rem 2.5rem;
  text-align: center;
}

.eli5-site__label {
  margin: 0 0 1rem;
  color: var(--eli5-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eli5-site__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem 1.5rem;
}

.eli5-site__nav a {
  color: var(--eli5-ink);
  font-weight: 800;
  font-size: 0.95rem;
  text-decoration: none;
}

.eli5-site__nav a:hover,
.eli5-site__nav a:focus-visible {
  color: var(--eli5-gold);
}

/* The legal row is deliberately dimmer and smaller than the section links --
   it has to be present on every page, not competing with them. */
.eli5-site__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0.35rem 1rem;
  margin: 1.75rem 0 0;
  color: rgba(247, 244, 238, 0.45);
  font-size: 0.78rem;
}

.eli5-site__legal a {
  color: rgba(247, 244, 238, 0.6);
  text-decoration: none;
}

.eli5-site__legal a:hover,
.eli5-site__legal a:focus-visible {
  color: var(--eli5-ink);
}

.eli5-site__nav a:focus-visible,
.eli5-site__legal a:focus-visible {
  outline: 2px solid var(--eli5-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

/* —— Static visuals / scenes —— */
@keyframes eli5-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
/* Index orbit deco */
.eli5-index__orbit {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto 1.25rem;
}
.eli5-index__orbit span {
  position: absolute;
  border-radius: 50%;
}
.eli5-index__orbit span:nth-child(1) {
  inset: 18%;
  background: radial-gradient(circle at 35% 30%, #ffb347, #ff6b3d);
  box-shadow: 0 0 30px rgba(255, 107, 61, 0.4);
}
.eli5-index__orbit span:nth-child(2) {
  width: 28%;
  aspect-ratio: 1;
  right: 0;
  top: 10%;
  background: radial-gradient(circle at 35% 30%, #fff6d6, #c4b48a);
  animation: eli5-float 4s ease-in-out infinite;
}
.eli5-index__orbit span:nth-child(3) {
  width: 14%;
  aspect-ratio: 1;
  left: 8%;
  bottom: 18%;
  background: #4cc9f0;
  animation: eli5-float 3.2s ease-in-out infinite reverse;
}

/* Zero toy + plate + blocks + elephant */

@media (prefers-reduced-motion: reduce) {.eli5-index__orbit span {
    animation: none;
  }
}

/* —— Index areas —— */
.eli5-index__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  justify-content: center;
  margin-top: 1.75rem;
}

.eli5-index__nav a {
  text-decoration: none;
  color: #1a1400;
  background: var(--eli5-gold);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
}

.eli5-index__nav a:hover,
.eli5-index__nav a:focus-visible {
  background: var(--eli5-gold-soft);
}

.eli5-index__nav a:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.eli5-area {
  margin-top: 2.75rem;
  scroll-margin-top: 1.25rem;
}

.eli5-area__header {
  margin-bottom: 1rem;
}

.eli5-area__title {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  margin: 0 0 0.35rem;
  letter-spacing: -0.02em;
}

.eli5-area__blurb {
  margin: 0;
  color: var(--eli5-muted);
  font-size: 1rem;
}

/* —— Art objects (SVG kit) —— */
.eli5-art {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

/* —— Denser index + area pages —— */
.eli5-index__count {
  display: inline-block;
  min-width: 1.4rem;
  padding: 0.05rem 0.35rem;
  margin-left: 0.15rem;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.18);
  font-size: 0.72em;
}

.eli5-area__all,
.eli5-area__more a {
  display: inline-block;
  margin-top: 0.35rem;
  color: var(--eli5-gold);
  font-weight: 800;
  text-decoration: none;
  font-size: 0.92rem;
}

.eli5-grid--dense {
  grid-template-columns: repeat(auto-fill, minmax(11.5rem, 1fr));
  gap: 0.85rem;
}

/* —— Rebuilt story: labelled diagrams, one step at a time —— */

.eli5-hero--recipe {
  min-height: auto;
  justify-content: center;
  padding: 3.5rem 0 2rem;
}

.eli5-figure {
  position: relative;
  margin: 0 0 0.25rem;
  width: 100%;
  border-radius: 1.5rem;
  overflow: hidden;
  background: #0a0f22;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.38);
}

.eli5-figure--hero {
  margin-top: 2.25rem;
}

.eli5-figure__stage {
  display: block;
  line-height: 0;
}

.eli5-diagram {
  display: block;
  width: 100%;
  height: auto;
}

.eli5-figure__badge {
  position: absolute;
  top: 0.85rem;
  left: 0.85rem;
  z-index: 2;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  background: var(--eli5-gold);
  color: #1a1400;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.eli5-figure__caption {
  margin: 0;
  padding: 0.7rem 1.15rem 0.95rem;
  border-top: 1px solid rgba(255, 255, 255, 0.09);
  color: var(--eli5-gold-soft);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.35;
  text-align: center;
  text-wrap: balance;
}

.eli5-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: eli5-step;
}

.eli5-step {
  padding: 3rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.eli5-step:first-child {
  border-top: 0;
}

.eli5-step__marker {
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin: 0 0 0.6rem;
}

.eli5-step__title {
  font-size: clamp(1.6rem, 5vw, 2.15rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem;
  text-wrap: balance;
}

.eli5-step__text {
  font-size: 1.15rem;
  line-height: 1.55;
  color: var(--eli5-muted);
  margin: 1.4rem 0 0;
  text-wrap: pretty;
}

.eli5-step__aside {
  margin: 1.1rem 0 0;
  padding: 0.85rem 1.1rem;
  border-left: 4px solid var(--eli5-gold);
  border-radius: 0 0.75rem 0.75rem 0;
  background: rgba(232, 165, 75, 0.09);
  color: var(--eli5-ink);
  font-size: 1rem;
  line-height: 1.5;
}

.eli5-takeaway,
.eli5-tryit {
  margin-top: 2.5rem;
  padding: 1.5rem 1.6rem;
  border-radius: 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
}

.eli5-takeaway {
  border-color: rgba(232, 165, 75, 0.42);
  background: rgba(232, 165, 75, 0.08);
}

.eli5-takeaway__label,
.eli5-tryit__label {
  margin: 0 0 0.5rem;
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eli5-takeaway__text {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.45;
  text-wrap: balance;
}

.eli5-tryit__text {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.55;
  color: var(--eli5-muted);
}

.eli5-related {
  margin-top: 2.5rem;
}

.eli5-related__label {
  margin: 0 0 0.9rem;
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eli5-related__list {
  display: grid;
  gap: 0.7rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.eli5-related__list a {
  display: block;
  padding: 0.85rem 1.1rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--eli5-ink);
  text-decoration: none;
  font-weight: 700;
}

.eli5-related__list a:hover,
.eli5-related__list a:focus-visible {
  border-color: var(--eli5-gold);
  background: rgba(232, 165, 75, 0.1);
}

@media (min-width: 720px) {
  .eli5-step {
    padding: 3.75rem 0;
  }

  .eli5-related__list {
    grid-template-columns: 1fr 1fr;
  }
}

/* Topic tags — hubs that cut across the seven shelves. */

.eli5-tags {
  display: grid;
  gap: 0.85rem;
  list-style: none;
  margin: 2.25rem 0 0;
  padding: 0;
}

.eli5-tags__link {
  display: grid;
  gap: 0.3rem;
  padding: 1rem 1.15rem;
  border-radius: 1.1rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  color: inherit;
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.eli5-tags__link:hover,
.eli5-tags__link:focus-visible {
  transform: translateY(-2px);
  border-color: var(--eli5-gold);
  background: rgba(232, 165, 75, 0.1);
}

.eli5-tags__label {
  font-size: 1.05rem;
  font-weight: 800;
}

.eli5-tags__blurb {
  color: var(--eli5-muted);
  font-size: 0.88rem;
}

/* Chips at the foot of a story, into the hubs it belongs to. */

.eli5-topics {
  margin-top: 2.5rem;
}

.eli5-topics__label {
  margin: 0 0 0.7rem;
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eli5-topics__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.eli5-topics__list a {
  display: inline-block;
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--eli5-ink);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 700;
}

.eli5-topics__list a:hover,
.eli5-topics__list a:focus-visible {
  border-color: var(--eli5-gold);
  background: rgba(232, 165, 75, 0.12);
}

/* The way out to the word lists. Deliberately not chips: these leave ELI5 for
   another part of the site, so they read as sentences rather than as more of
   the tag row directly above them. */

.eli5-practise {
  margin-top: 2.5rem;
}

.eli5-practise__label {
  margin: 0 0 0.7rem;
  color: var(--eli5-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.eli5-practise__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.eli5-practise__list a {
  color: var(--eli5-ink);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 800;
}

.eli5-practise__list a:hover,
.eli5-practise__list a:focus-visible {
  color: var(--eli5-gold);
  text-decoration: underline;
}

@media (min-width: 720px) {
  .eli5-tags {
    grid-template-columns: 1fr 1fr;
  }
}