/* provenance viewer
   Serif carries what was said. Mono carries the apparatus: dates, sources, terms.
   The spine is continuous only where the museum wrote a semicolon. */

:root {
  --mist: #eef2f3;
  --vellum: #f7f9f9;
  --ink: #1a2429;
  --graphite: #56656c;
  --trace: #bfcbd0;
  --accent: #1d6a85;
  --accent-soft: #d6e8ee;
  --hatch: #9fb0b7;

  --serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --step--1: 0.8125rem;
  --step-0: 1.0625rem;
  --step-1: 1.25rem;
  --step-2: 1.625rem;
  --step-3: 2.375rem;

  --datecol: 8.75rem;
  --spinecol: 1.75rem;
  --gutter: clamp(1rem, 3vw, 2.5rem);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --mist: #10171a;
    --vellum: #162024;
    --ink: #d9e4e8;
    --graphite: #96a6ad;
    --trace: #33434a;
    --accent: #79c3dc;
    --accent-soft: #1d3a45;
    --hatch: #4f636b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--serif);
  font-size: var(--step-0);
  font-optical-sizing: auto;
  line-height: 1.55;
  font-weight: 380;
}

a { color: var(--accent); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 2px; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

.mono { font-family: var(--mono); font-size: var(--step--1); letter-spacing: 0; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

.skip {
  position: absolute; left: var(--gutter); top: -3rem;
  background: var(--vellum); padding: 0.4rem 0.7rem; z-index: 10;
  font-family: var(--mono); font-size: var(--step--1);
}
.skip:focus { top: 0.5rem; }

/* ---------------------------------------------------------------- masthead */

.masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem 2rem;
  padding: 1.25rem var(--gutter) 1rem;
  border-bottom: 1px solid var(--trace);
}

.mark {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.1;
  font-weight: 400;
  letter-spacing: -0.01em;
}

.thesis {
  margin: 0.35rem 0 0;
  max-width: 34rem;
  font-size: var(--step-0);
  line-height: 1.4;
  color: var(--graphite);
}

.objects { display: flex; flex-wrap: wrap; gap: 0.25rem 1.5rem; }

.objects button {
  display: grid;
  text-align: left;
  padding: 0.35rem 0 0.45rem;
  border-bottom: 1px solid transparent;
  color: var(--graphite);
}
.objects button .obj-title { font-size: var(--step-0); line-height: 1.25; }
.objects button .obj-case { font-family: var(--mono); font-size: var(--step--1); }
.objects button:hover { color: var(--ink); }
.objects button[aria-current="true"] { color: var(--ink); border-bottom-color: var(--accent); }

/* ---------------------------------------------------------------- layout */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 1000px) {
  .layout { grid-template-columns: minmax(0, 46fr) minmax(0, 54fr); }
}

/* ---------------------------------------------------------------- plate */

.plate {
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  background: var(--vellum);
  border-right: 1px solid var(--trace);
  height: 58vh;
  position: relative;
}

.viewport { min-height: 0; width: 100%; height: 100%; }

@media (min-width: 1000px) {
  .plate { position: sticky; top: 0; height: 100vh; }
}

.viewport .placeholder {
  height: 100%;
  display: grid;
  place-content: center;
  gap: 0.5rem;
  padding: 2rem;
  text-align: center;
  color: var(--graphite);
}

.zoom {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  display: flex;
  border: 1px solid var(--trace);
  background: var(--vellum);
}
.zoom button {
  min-width: 2.5rem;
  height: 2.25rem;
  padding: 0 0.6rem;
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--ink);
}
.zoom button + button { border-left: 1px solid var(--trace); }
.zoom button:hover { background: var(--mist); }
.zoom[hidden] { display: none; }

.credit {
  margin: 0;
  padding: 0.7rem var(--gutter) 0.9rem;
  border-top: 1px solid var(--trace);
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--graphite);
  line-height: 1.5;
}

/* ---------------------------------------------------------------- ledger */

.ledger {
  padding: 2rem var(--gutter) 3rem;
  min-width: 0;
}

.ledger > section { max-width: 44rem; margin-top: 2.75rem; }

.ledger h2 {
  margin: 0 0 1rem;
  font-size: var(--step-1);
  font-weight: 450;
  line-height: 1.3;
}

.object-head h1 {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.08;
  font-weight: 330;
  letter-spacing: -0.01em;
}
.object-head .byline { margin: 0.5rem 0 0; color: var(--graphite); }
.object-head .accession { margin: 0.35rem 0 0; color: var(--graphite); }

/* ---------------------------------------------------------------- strip */

.strip { margin-top: 2rem; }

.strip-row {
  display: grid;
  grid-template-columns: 6rem minmax(0, 1fr);
  gap: 0.25rem 1rem;
  align-items: center;
}
.strip-row + .strip-row { margin-top: 0.6rem; }

.strip-label { font-family: var(--mono); font-size: var(--step--1); color: var(--graphite); }

.cells { display: flex; gap: 3px; margin: 0; padding: 0; list-style: none; flex-wrap: wrap; }
.cell { width: 1.6rem; height: 0.85rem; border: 1px solid var(--graphite); }
.cell.direct { background: var(--graphite); }
.cell.cited { background: var(--accent); border-color: var(--accent); }
.cell.uncited { background: transparent; }
.cell.hedged { border-style: dotted; }
.cell.gap, .cell.none {
  border-color: var(--hatch);
  background: repeating-linear-gradient(115deg, var(--hatch) 0 1px, transparent 1px 5px);
}

.strip-sum { grid-column: 2; margin: 0; font-size: var(--step--1); font-family: var(--mono); color: var(--ink); }

.strip-note { margin: 1rem 0 0; max-width: 36rem; color: var(--graphite); font-size: var(--step--1); line-height: 1.5; }

/* ---------------------------------------------------------------- chain */

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

.item {
  display: grid;
  grid-template-columns: var(--datecol) var(--spinecol) minmax(0, 1fr);
  column-gap: 0.75rem;
}

.when {
  padding-top: 0.15rem;
  text-align: right;
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--graphite);
  overflow-wrap: anywhere;
}

.spine { position: relative; }

.spine::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--trace);
  transform-origin: top;
}
.track.drawing .spine::before { animation: draw 380ms ease-out both; animation-delay: calc(var(--i, 0) * 45ms); }
@keyframes draw { from { transform: scaleY(0); } to { transform: scaleY(1); } }

.item:first-child .spine::before { top: 0.75rem; }
.item.current .spine::before { bottom: auto; height: 0.75rem; }
.item.link.cited .spine::before { background: var(--accent); width: 2px; margin-left: -0.5px; }

.node {
  position: absolute;
  left: 50%;
  top: 0.45rem;
  transform: translateX(-50%);
  display: block;
  background: var(--mist);
  line-height: 0;
}

.body { padding: 0 0 1.4rem; min-width: 0; }

/* holdings */
.item.holding .name { margin: 0; font-size: var(--step-1); line-height: 1.3; font-weight: 420; }
.item.holding .name.unnamed { font-style: italic; color: var(--graphite); }
.item.holding .meta { margin: 0.15rem 0 0; color: var(--graphite); }
.item.holding .held { margin: 0.25rem 0 0; color: var(--graphite); }
.item.holding .identity { margin: 0.25rem 0 0; font-style: italic; color: var(--graphite); font-size: 0.95em; }
.item.holding .via { margin: 0.4rem 0 0; color: var(--graphite); font-size: 0.95em; }

/* production */
.item.production .made { margin: 0; color: var(--graphite); }

/* links */
.item.link .body { padding-bottom: 1.6rem; }
.item.link .method { margin: 0; font-family: var(--mono); font-size: var(--step--1); color: var(--ink); }
.item.link .changes { margin: 0.1rem 0 0; font-family: var(--mono); font-size: var(--step--1); color: var(--graphite); }
.item.link .unrecorded { margin: 0.3rem 0 0; font-style: italic; color: var(--graphite); }

.status { display: flex; align-items: center; gap: 0.4rem; margin: 0; font-family: var(--mono); font-size: var(--step--1); }
.status svg { flex: none; }
.item .status { margin-top: 0.3rem; }

/* gaps: the trace is replaced by rain */
.item.gap .spine::before { display: none; }
.item.gap .spine::after {
  content: "";
  position: absolute;
  left: calc(50% - 5px);
  width: 11px;
  top: 0.2rem;
  bottom: 0.2rem;
  background: repeating-linear-gradient(115deg, var(--hatch) 0 1px, transparent 1px 6px);
}
.item.gap .body { padding: 0.4rem 0 1.8rem; min-height: 5.5rem; }
.item.gap .gap-title { margin: 0; font-style: italic; font-size: var(--step-0); }
.item.gap .basis { margin: 0.2rem 0 0; color: var(--graphite); font-size: 0.95em; }
.item.gap .when { color: var(--ink); padding-top: 0.45rem; }
.item.gap .interval-note { margin: 0.35rem 0 0; font-family: var(--mono); font-size: var(--step--1); color: var(--graphite); line-height: 1.5; }

.flag {
  display: inline-block;
  margin-top: 0.5rem;
  padding: 0.05rem 0.45rem;
  border: 1px solid var(--ink);
  font-family: var(--mono);
  font-size: var(--step--1);
}

/* rejected branch */
.branch {
  position: relative;
  margin: 0.9rem 0 0;
  padding: 0.6rem 0 0.1rem 1rem;
  border-left: 1px dashed var(--graphite);
}
.branch::before {
  content: "";
  position: absolute;
  left: calc(-0.75rem - var(--spinecol) / 2);
  top: 0;
  width: calc(0.75rem + var(--spinecol) / 2);
  border-top: 1px dashed var(--graphite);
}
.branch .claim { margin: 0.3rem 0 0; }
.branch .verdict { margin: 0.3rem 0 0; color: var(--graphite); font-size: 0.95em; }

/* evidence disclosure */
.disclose {
  display: inline-block;
  margin-top: 0.45rem;
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}
.disclose:hover { text-decoration-thickness: 2px; }

.evidence {
  margin-top: 0.7rem;
  padding: 0.8rem 1rem;
  background: var(--vellum);
  border: 1px solid var(--trace);
}
.evidence[hidden] { display: none; }
.assertion + .assertion { margin-top: 0.9rem; padding-top: 0.9rem; border-top: 1px solid var(--trace); }
.assertion .claim { margin: 0; }
.assertion .markers, .assertion .note, .evidence .apparatus { margin: 0.35rem 0 0; color: var(--graphite); }
.sources { margin: 0.45rem 0 0; padding: 0; list-style: none; }
.sources li { font-family: var(--mono); font-size: var(--step--1); line-height: 1.45; }
.sources li + li { margin-top: 0.3rem; }
.sources .access { display: block; color: var(--graphite); }

/* ---------------------------------------------------------------- museum text */

.verbatim {
  margin: 0;
  max-width: 40rem;
  font-size: var(--step-0);
  line-height: 1.7;
}
.verbatim .p-source { color: var(--graphite); }
.verbatim .p-direct, .verbatim .p-gap {
  background: none;
  color: var(--accent);
  font-weight: 650;
  padding: 0 0.12em;
}
.verbatim .p-gap {
  color: var(--ink);
  background: repeating-linear-gradient(115deg, var(--hatch) 0 1px, transparent 1px 4px);
}

.key { display: flex; flex-wrap: wrap; gap: 0.4rem 1.5rem; margin: 1rem 0 0; padding: 0; list-style: none; }
.key li { font-family: var(--mono); font-size: var(--step--1); color: var(--graphite); }
.key b { font-weight: 650; color: var(--accent); padding: 0 0.2em; }
.key .k-gap b { color: var(--ink); background: repeating-linear-gradient(115deg, var(--hatch) 0 1px, transparent 1px 4px); }
.key .k-src b { color: var(--graphite); font-weight: 400; }
.retrieved { margin: 0.75rem 0 0; color: var(--graphite); }

/* ---------------------------------------------------------------- questions, formats */

.questions ol { margin: 0; padding-left: 1.2rem; }
.questions li + li { margin-top: 0.4rem; }
.scope { margin: 1rem 0 0; color: var(--graphite); font-size: 0.95em; }

.formats ul { margin: 0; padding: 0; list-style: none; }
.formats li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.25rem 1rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--trace);
}
.formats li:last-child { border-bottom: 1px solid var(--trace); }
.formats .fmt-note { font-family: var(--mono); font-size: var(--step--1); color: var(--graphite); text-align: right; }

.colophon {
  padding: 1.5rem var(--gutter) 2.5rem;
  border-top: 1px solid var(--trace);
  color: var(--graphite);
  font-size: var(--step--1);
  font-family: var(--mono);
}
.colophon p { margin: 0; max-width: 60rem; }
.colophon p + p { margin-top: 0.3rem; }

/* ---------------------------------------------------------------- small screens */

@media (max-width: 640px) {
  :root { --datecol: 5.75rem; --spinecol: 1.25rem; }
  .item { column-gap: 0.5rem; }
  .object-head h1 { font-size: var(--step-2); }
  .strip-row { grid-template-columns: minmax(0, 1fr); }
  .strip-sum { grid-column: 1; }
  .formats li { grid-template-columns: minmax(0, 1fr); }
  .formats .fmt-note { text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  .track.drawing .spine::before { animation: none; }
}