/* ==========================================================================
   MERIDIAN — Experience
   A research constellation above; the archive index below.
   Canvas for delight, DOM for truth. Both drive the same state.
   ========================================================================== */

.chart{
  position: relative;
  padding-block: var(--gap-l);
}

.chart__frame{
  position: relative;
  height: clamp(380px, 58vh, 560px);
  padding: clamp(.75rem, 1.5vw, 1.25rem);
}

#constellation{
  display: block;
  width: 100%;
  height: 100%;
}

.chart__hint{
  margin-top: var(--gap-xs);
  font-size: var(--t-micro);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--obsidian-62);
}

/* ---- the plaque -------------------------------------------------------- */

.plaque{
  position: absolute;
  right: clamp(1rem, 3vw, 2.5rem);
  bottom: clamp(1rem, 3vw, 2.5rem);
  width: min(30rem, calc(100% - 2 * var(--edge)));
  padding: clamp(1.4rem, 2.2vw, 2rem);
  opacity: 0;
  transform: translateY(.75rem);
  transition: opacity var(--dur-mid) var(--ease-out-quart),
              transform var(--dur-slow) var(--ease-out-expo);
  pointer-events: none;
}
.plaque.is-shown{ opacity: 1; transform: none; }

.plaque__head{
  display: flex;
  justify-content: space-between;
  gap: var(--gap-s);
  font-size: var(--t-micro);
  letter-spacing: .18em;
  text-transform: uppercase;
}
.plaque__band{ color: var(--cobalt); }
.plaque__year{ color: var(--obsidian-62); font-variant-numeric: tabular-nums; }

.plaque__title{
  margin-top: var(--gap-xs);
  font-size: var(--t-h4);
  line-height: 1.35;
}

.plaque__meta{
  margin-top: .5rem;
  font-size: var(--t-micro);
  line-height: 1.6;
  color: var(--obsidian-62);
}

.plaque__body{
  margin-top: var(--gap-xs);
  padding-top: var(--gap-xs);
  border-top: 1px solid var(--obsidian-08);
  font-size: var(--t-small);
  line-height: 1.65;
  color: var(--obsidian-70);
}

.plaque__link{
  display: inline-block;
  margin-top: var(--gap-xs);
  font-size: var(--t-micro);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cobalt);
  border-bottom: 1px solid var(--cobalt);
  pointer-events: auto;
}

@media (max-width: 900px){
  .plaque{
    position: static;
    width: 100%;
    margin-top: var(--gap-s);
    opacity: 1;
    transform: none;
  }
  .plaque:not(.is-shown){ display: none; }
}

/* ---- the archive ------------------------------------------------------- */

.archive{
  padding-block: var(--gap-l) var(--gap-xl);
  border-top: 1px solid var(--obsidian-08);
}

.archive__group{ margin-top: var(--gap-l); }
.archive__group:first-of-type{ margin-top: var(--gap-m); }

.archive__band{
  display: flex;
  align-items: baseline;
  gap: var(--gap-s);
  font-size: var(--t-label);
  letter-spacing: var(--ls-label);
  text-transform: uppercase;
  color: var(--obsidian-62);
  padding-bottom: var(--gap-xs);
  border-bottom: 1px solid var(--obsidian-12);
}
.archive__count{ font-variant-numeric: tabular-nums; }

.archive__list{
  list-style: none;
  margin: 0;
  padding: 0;
}

.archive__list li{ border-bottom: 1px solid var(--obsidian-08); }

/* The entry is a real button: reachable, pressable, and it lights its star. */
.archive__entry{
  display: grid;
  grid-template-columns: 7rem 1fr;
  gap: var(--gap-s);
  width: 100%;
  padding: var(--gap-s) 0;
  text-align: left;
  cursor: pointer;
  transition: opacity var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.archive__entry:hover{ background: var(--obsidian-04); }
.archive__entry.is-dim{ opacity: .38; }
.archive__entry.is-lit{ background: var(--coral-12); }
.archive__entry.is-active{ background: var(--cobalt-12); }

/* The entry's fields are spans (a button may not contain headings or <p>), so
   they need explicit block flow. */
.archive__year,
.archive__title,
.archive__meta,
.archive__body{ display: block; }

.archive__year{
  font-size: var(--t-micro);
  letter-spacing: .1em;
  color: var(--obsidian-62);
  font-variant-numeric: tabular-nums;
  padding-top: .28rem;
}
.archive__entry.is-active .archive__year{ color: var(--cobalt); }

.archive__title{
  font-family: var(--serif);
  font-size: var(--t-h4);
  font-weight: 500;
  line-height: 1.35;
  max-width: 52ch;
}

.archive__meta{
  margin-top: .45rem;
  font-size: var(--t-micro);
  line-height: 1.65;
  color: var(--obsidian-62);
  max-width: 68ch;
}

.archive__body{
  margin-top: .6rem;
  font-size: var(--t-small);
  line-height: 1.7;
  color: var(--obsidian-70);
  max-width: 72ch;
}

.archive__link{
  display: inline-block;
  margin: .5rem 0 var(--gap-s) 7.75rem;
  font-size: var(--t-micro);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cobalt);
  border-bottom: 1px solid var(--obsidian-18);
}
.archive__link:hover{ border-color: var(--cobalt); }

@media (max-width: 700px){
  .archive__entry{ grid-template-columns: 1fr; gap: .35rem; }
  .archive__link{ margin-left: 0; }
}

/* ---- the media marquee ------------------------------------------------- */

.press{
  padding-block: var(--gap-l);
  border-top: 1px solid var(--obsidian-08);
}

.press__lede{
  max-width: 58ch;
  margin-top: var(--gap-xs);
}

.marquee{
  display: flex;
  gap: 0;
  margin-top: var(--gap-m);
  overflow: hidden;
  /* Fade the ends so the loop has no visible seam. */
  mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 8%, #000 92%, transparent);
}

.marquee__track{
  display: flex;
  flex-shrink: 0;
  gap: var(--gap-m);
  padding-right: var(--gap-m);
  white-space: nowrap;
  will-change: transform;
}

.marquee__item{
  font-size: var(--t-small);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--obsidian-62);
}
.marquee__item::after{
  content: "·";
  margin-left: var(--gap-m);
  color: var(--obsidian-18);
}