/* The sky of Echoes of the Real. One dark world by design: a night sky has no
   light mode, so every colour is set explicitly here rather than following the
   viewer's theme. The panels are the one light surface, and they are paper. */

@font-face {
  font-family: "Wisteria Tale";
  src: url("fonts/wisteria-tale.otf") format("opentype");
  font-display: swap;
}

@font-face {
  font-family: "Basteleur";
  src: url("fonts/Basteleur-Moonlight.ttf") format("truetype");
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: "Basteleur";
  src: url("fonts/Basteleur-Bold.ttf") format("truetype");
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "That New Pixel";
  src: url("fonts/ThatThatNewPixel-Square.woff2") format("woff2");
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "That New Pixel";
  src: url("fonts/ThatThatNewPixel-ItalicSquare.woff2") format("woff2");
  font-style: italic;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --ink: #08090b;
  --ink-2: #121417;
  --bone: #ece4d2;
  --bone-dim: rgba(236, 228, 210, 0.64);
  --bone-faint: rgba(236, 228, 210, 0.2);
  --ash: #9aa6b2;
  --ash-dim: #6f7984;
  --gold: #caa663;
  --gold-soft: rgba(202, 166, 99, 0.62);
  --gold-faint: rgba(202, 166, 99, 0.24);
  --paper: #e6dcc6;
  --paper-2: #d9ccb0;
  --paper-ink: #1d1a16;
  --paper-muted: #5c5445;
  --paper-rule: rgba(29, 26, 22, 0.24);
  --paper-gold: #9a7431;
  --atlas-blue: #35506a;
  /* The title face; swap it here. */
  --script: "Wisteria Tale", "Snell Roundhand", "Apple Chancery", cursive;
  --serif: "Basteleur", "Iowan Old Style", Georgia, serif;
  --pixel: "That New Pixel", "Courier New", monospace;
  --gutter: max(16px, env(safe-area-inset-left, 0px));
  --folio-w: min(480px, 100vw);
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--ink);
  color: var(--bone);
  font-family: var(--serif);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.6;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

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

:focus-visible {
  outline: 1px solid var(--gold);
  outline-offset: 3px;
}

.px {
  font-family: var(--pixel);
  font-weight: 400;
  letter-spacing: 0.04em;
}

/* A blinking block cursor, like an old terminal waiting for input. */
.cursor-block {
  display: inline-block;
  width: 0.5em;
  height: 0.95em;
  margin-left: 0.2em;
  vertical-align: -0.1em;
  background: currentColor;
  animation: blink 1.05s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ---------- Film: grain, flicker and vignette over everything ---------- */

.grain {
  position: fixed;
  inset: -50%;
  z-index: 60;
  pointer-events: none;
  background-repeat: repeat;
  opacity: 0.11;
  animation: grain 0.42s steps(1) infinite;
}

body.overture-open .grain {
  opacity: 0.17;
}

@keyframes grain {
  0% { transform: translate(0, 0); }
  17% { transform: translate(-7%, 4%); }
  33% { transform: translate(5%, -9%); }
  50% { transform: translate(-11%, -3%); }
  67% { transform: translate(9%, 7%); }
  83% { transform: translate(-3%, 11%); }
}

.flicker {
  position: fixed;
  inset: 0;
  z-index: 59;
  pointer-events: none;
  background: #000;
  opacity: 0;
  animation: flicker 3.7s steps(1) infinite;
}

/* On the title and verse the flicker is a little gentler and slower. */
body.overture-open .flicker {
  animation: flicker-soft 4.35s steps(1) infinite;
}

@keyframes flicker-soft {
  0% { opacity: 0.017; }
  7% { opacity: 0; }
  19% { opacity: 0.03; }
  23% { opacity: 0.0085; }
  41% { opacity: 0.038; }
  44% { opacity: 0; }
  63% { opacity: 0.021; }
  71% { opacity: 0.0425; }
  74% { opacity: 0.0085; }
  88% { opacity: 0.0255; }
}

@keyframes flicker {
  0% { opacity: 0.02; }
  7% { opacity: 0; }
  19% { opacity: 0.035; }
  23% { opacity: 0.01; }
  41% { opacity: 0.045; }
  44% { opacity: 0; }
  63% { opacity: 0.025; }
  71% { opacity: 0.05; }
  74% { opacity: 0.01; }
  88% { opacity: 0.03; }
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  background: radial-gradient(ellipse 85% 80% at 50% 50%, rgba(0, 0, 0, 0) 55%, rgba(0, 0, 0, 0.55) 100%);
}

/* ---------- The sky ---------- */

#heavens {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

#viewport {
  position: fixed;
  inset: 0;
  overflow: hidden;
  touch-action: none;
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
}

#viewport.dragging {
  cursor: grabbing;
}

#viewport.over-figure {
  cursor: pointer;
}

#world {
  position: absolute;
  left: 0;
  top: 0;
  transform-origin: 0 0;
  will-change: transform;
  --px: 1;
}

#figures {
  position: absolute;
  left: 0;
  top: 0;
  overflow: visible;
}

/* The coordinate grid of an old atlas, very faint. */
.grat path {
  fill: none;
  stroke: var(--ash);
  stroke-width: calc(1px * var(--px));
  opacity: 0.075;
}

/* The path of the chapters, our ecliptic. */
.ecl path {
  fill: none;
  stroke: var(--gold);
  stroke-width: calc(1px * var(--px));
  stroke-dasharray: calc(2px * var(--px)) calc(5px * var(--px));
  opacity: 0.35;
  transition: opacity 1.2s ease;
}

.ecl line {
  stroke: var(--gold);
  stroke-width: calc(1px * var(--px));
  opacity: 0.35;
}

.ecl text {
  fill: var(--ash);
  font-family: var(--pixel);
  font-size: calc(12px * var(--px));
  letter-spacing: 0.06em;
  opacity: 0.6;
  transition: opacity 1.2s ease;
}

.ecl .ecl-name {
  font-family: var(--serif);
  font-weight: 300;
  letter-spacing: 0.08em;
  font-size: calc(13px * var(--px));
}

body.all .ecl path { opacity: 0.55; }
body.all .ecl text { opacity: 0.85; }

/* A constellation. --near (0..1) rises as the pointer approaches. */
.con {
  --near: 0;
  outline: none;
  transition: opacity 0.8s ease;
}

.con .hit {
  fill: transparent;
  stroke: none;
}

.con:focus-visible .hit {
  stroke: var(--gold-soft);
  stroke-width: calc(1px * var(--px));
}

.con .trace,
.con .glow {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
}

.con .trace {
  stroke: var(--bone);
  stroke-width: calc(1px * var(--px));
  opacity: calc(var(--near) * 0.45);
  /* Undrawn instantly, but only after the fade has finished. */
  transition: stroke-dashoffset 0s linear 0.9s, opacity 0.9s ease;
}

.con .glow {
  stroke: var(--gold);
  stroke-width: calc(6px * var(--px));
  opacity: 0;
  filter: blur(calc(3px * var(--px)));
  transition: stroke-dashoffset 0s linear 0.9s, opacity 0.9s ease;
}

.con.near .trace,
.con.near .glow {
  stroke-dashoffset: 0;
  transition: stroke-dashoffset 0s, opacity 0.6s ease;
}

.con.lit .trace,
.con.sel .trace,
body.all .con .trace,
.con.kindled .trace {
  stroke-dashoffset: 0;
  opacity: 0.9;
  transition: stroke-dashoffset 1.6s cubic-bezier(0.45, 0.05, 0.25, 1), opacity 0.35s ease;
}

.con.lit .glow,
.con.sel .glow,
.con.kindled .glow {
  stroke-dashoffset: 0;
  opacity: 0.16;
  transition: stroke-dashoffset 1.6s cubic-bezier(0.45, 0.05, 0.25, 1), opacity 0.6s ease;
}

body.all .con:not(.lit):not(.sel) .trace {
  opacity: 0.5;
  transition-delay: var(--sweep, 0s);
}

.con .st {
  transform-box: view-box;
}

.con .halo {
  opacity: calc(0.3 + var(--near) * 0.3);
  transform-box: fill-box;
  transform-origin: center;
  transition: opacity 0.6s ease, transform 0.9s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.con .glyph {
  fill: var(--gold);
  animation: twinkle var(--tw-d, 5s) ease-in-out var(--tw-o, 0s) infinite alternate;
}

.con .core {
  fill: #fff6e0;
}

.con .rays line {
  stroke: var(--gold);
  stroke-width: 0.45;
}

.con .rays {
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  transform: scale(0.35) rotate(-8deg);
  transition: opacity 0.5s ease, transform 1.4s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.con.lit .halo,
.con.sel .halo,
.con.kindled .halo {
  opacity: 0.9;
  transform: scale(1.3);
}

.con.lit .rays,
.con.sel .rays {
  opacity: 0.85;
  transform: none;
}

body.has-sel .con:not(.sel):not(.lit) {
  opacity: 0.4;
}

@keyframes twinkle {
  from { opacity: 1; }
  to { opacity: 0.6; }
}

/* Names on the sky, sized so they read the same at any zoom. */
#labels {
  position: absolute;
  left: 0;
  top: 0;
  pointer-events: none;
}

.label {
  position: absolute;
  transform: translate(-50%, 0);
  margin-top: calc(14px * var(--px));
  text-align: center;
  white-space: nowrap;
  font-size: calc(13px * var(--px));
  opacity: 0;
  transition: opacity 0.6s ease;
}

.label[data-place="above"] {
  transform: translate(-50%, -100%);
  margin-top: calc(-14px * var(--px));
}

.label[data-place="right"],
.label[data-place="left"] {
  margin-top: 0;
  text-align: left;
  transform: translate(0, -50%);
  margin-left: calc(18px * var(--px));
}

.label[data-place="left"] {
  text-align: right;
  transform: translate(-100%, -50%);
  margin-left: calc(-18px * var(--px));
}

.label .nm {
  display: block;
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: 0.24em;
  color: var(--gold);
  text-shadow: 0 0 calc(10px * var(--px)) rgba(0, 0, 0, 0.95);
}

.label .nm span {
  display: inline-block;
  opacity: 0;
  filter: blur(calc(3px * var(--px)));
  transform: translateY(calc(4px * var(--px)));
  transition: opacity 0.5s ease, filter 0.7s ease, transform 0.7s ease;
  transition-delay: calc(var(--i) * 38ms);
}

.label .sub {
  display: block;
  margin-top: 0.4em;
  font-family: var(--pixel);
  font-size: 0.95em;
  letter-spacing: 0.06em;
  color: var(--bone-dim);
  text-shadow: 0 0 4px #000, 0 0 10px #000;
  opacity: 0;
  transition: opacity 0.6s ease 0.35s;
}

.label .tap {
  display: none;
  margin-top: 0.3em;
  font-family: var(--pixel);
  color: var(--bone);
}

.touch .label.show-tap .tap {
  display: block;
}

.label.lit,
.label.sel,
.label.kindled,
body.all .label {
  opacity: 1;
}

.label.lit .nm span,
.label.sel .nm span,
.label.kindled .nm span,
body.all .label .nm span {
  opacity: 1;
  filter: blur(0);
  transform: none;
}

.label.lit .sub,
.label.sel .sub {
  opacity: 1;
}

body.all .label:not(.lit):not(.sel) .nm {
  color: var(--gold-soft);
}

/* With every figure named, the places keep quiet until hovered. */
body.all .label.neb:not(.lit):not(.sel) {
  opacity: 0;
}

.label.neb {
  transform: translate(-50%, -50%);
  margin-top: 0;
  margin-left: 0;
  text-align: center;
}

.label.neb .nm {
  font-weight: 300;
  letter-spacing: 0.12em;
  font-size: 1.1em;
  color: var(--bone);
  text-shadow: 0 0 4px #000, 0 0 10px #000, 0 0 18px #000;
}

.label.neb .nm span {
  transition-delay: calc(var(--i) * 20ms);
}

/* ---------- Chrome over the sky ---------- */

.masthead {
  position: fixed;
  z-index: 10;
  top: calc(env(safe-area-inset-top, 0px) + 14px);
  left: calc(var(--gutter) + 6px);
  pointer-events: none;
  transition: opacity 0.6s ease;
}

.masthead-title {
  margin: 0;
  font-family: var(--script);
  font-size: 34px;
  line-height: 1.1;
  color: var(--bone);
  text-shadow: 0 0 14px rgba(236, 228, 210, 0.18);
}

.masthead-sub {
  margin: 2px 0 0;
  font-family: var(--pixel);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--ash);
}

.controls {
  position: fixed;
  z-index: 10;
  top: calc(env(safe-area-inset-top, 0px) + 22px);
  right: calc(var(--gutter) + 6px);
  display: flex;
  gap: 4px 24px;
  flex-wrap: wrap;
  justify-content: flex-end;
  transition: opacity 0.6s ease, right 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* With a figure's panel open on the right, the menu steps left of it. */
@media (min-width: 761px) {
  body.has-sel .controls,
  body.has-sel .site-foot {
    right: calc(var(--folio-w) + 28px);
  }
}

.controls button {
  font-family: var(--pixel);
  font-size: 17px;
  letter-spacing: 0.05em;
  color: var(--bone-dim);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.3s ease, border-color 0.3s ease;
}

.controls button:hover,
.controls button[aria-pressed="true"],
.controls button[aria-expanded="true"] {
  color: var(--gold);
  border-bottom-color: var(--gold-faint);
}

.hint {
  position: fixed;
  z-index: 10;
  left: 50%;
  bottom: calc(env(safe-area-inset-bottom, 0px) + 52px);
  transform: translateX(-50%);
  margin: 0;
  width: max-content;
  max-width: calc(100vw - 2 * var(--gutter));
  text-align: center;
  font-family: var(--pixel);
  font-size: 16px;
  letter-spacing: 0.05em;
  color: var(--bone-dim);
  pointer-events: none;
  transition: opacity 1.4s ease;
}

/* A small line of credits in the bottom corner. */
.site-foot {
  position: fixed;
  z-index: 11;
  right: calc(var(--gutter) + 6px);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 16px);
  margin: 0;
  font-family: var(--pixel);
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ash-dim);
  transition: opacity 0.6s ease, right 0.7s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.site-foot a {
  color: var(--bone-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--bone-faint);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.site-foot a:hover,
.site-foot a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--gold-faint);
}

.site-foot .sep {
  margin: 0 0.4em;
}

/* Touch and pointer each get their own short sentence. */
.touch-only { display: none; }
.touch .touch-only { display: inline; }
.touch .pointer-only { display: none; }

body.hint-done .hint { opacity: 0; }

body.overture-open .masthead,
body.overture-open .controls,
body.overture-open .hint,
body.overture-open .site-foot {
  opacity: 0;
  pointer-events: none;
}

/* ---------- The overture: a title card, then the Dreamer's verse ---------- */

#overture {
  position: fixed;
  inset: 0;
  z-index: 30;
  background: #05070e;
  cursor: pointer;
  transition: opacity 1.2s ease, visibility 0s linear 1.2s;
}

#overture.gone {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

#overture.irising {
  transition: none;
}

#leader {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.card {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding-block: calc(env(safe-area-inset-top, 0px) + 32px) calc(env(safe-area-inset-bottom, 0px) + 32px);
  padding-inline: var(--gutter);
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity 1.6s ease, visibility 0s linear 1.6s;
}

.card.shown {
  opacity: 1;
  visibility: visible;
  transition: opacity 2.2s ease, visibility 0s;
}

.card-inner {
  text-align: center;
  animation: weave 0.5s steps(1) infinite, card-flicker 3.4s steps(1) infinite;
}

/* The verse holds still; only the film behind it moves. */
#card-verse .card-inner {
  animation: none;
}

@keyframes weave {
  0% { transform: translate(0, 0); }
  25% { transform: translate(0.6px, -0.4px); }
  50% { transform: translate(-0.4px, 0.5px); }
  75% { transform: translate(0.3px, 0.2px); }
}

@keyframes card-flicker {
  0% { opacity: 1; }
  11% { opacity: 0.915; }
  14% { opacity: 1; }
  38% { opacity: 0.949; }
  40% { opacity: 1; }
  66% { opacity: 0.898; }
  68% { opacity: 0.975; }
  90% { opacity: 0.94; }
}

.script-title {
  margin: 0;
  font-family: var(--script);
  font-weight: 400;
  font-size: clamp(58px, 12.5vw, 196px);
  line-height: 1.05;
  color: #f1ece2;
  text-shadow:
    0 0 1px rgba(255, 255, 255, 0.6),
    0 0 26px rgba(255, 255, 255, 0.16),
    0.05em 0.06em 0.05em rgba(0, 0, 0, 0.7);
  text-wrap: balance;
}

.title-star {
  display: block;
  width: 22px;
  height: 22px;
  margin: clamp(10px, 2.5vh, 26px) auto clamp(8px, 2vh, 20px);
  fill: #d8d2c6;
  opacity: 0.8;
}

.credit-by {
  margin: 0;
  font-size: 18px;
  font-weight: 300;
  color: #cfc9bd;
  letter-spacing: 0.04em;
}

.credit-name {
  margin: 4px 0 0;
  font-weight: 700;
  font-size: clamp(20px, 2.4vw, 28px);
  letter-spacing: 0.34em;
  padding-left: 0.34em;
  color: #ece6da;
}

.credit-with {
  margin: 14px auto 0;
  max-width: 60em;
  text-wrap: balance;
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  line-height: 1.9;
  color: #a9a398;
}

.verse {
  margin: 0 auto;
  max-width: 31em;
  text-align: left;
  font-size: clamp(17px, 1.6vw, 21px);
  line-height: 1.62;
  color: #ebe5d9;
}

.verse .stanza {
  margin: 0 0 1em;
}

.verse .ln {
  display: block;
  opacity: 0;
}

.card.shown .verse .ln,
.card.shown .verse-credit,
.card.shown .enter {
  animation: verse-in 1.6s ease forwards;
  animation-delay: calc(0.5s + var(--i) * 0.34s);
}

/* The Dreamer's own words, in the hand of the title. */
.verse .spoken .ln {
  font-family: var(--script);
  font-size: 1.62em;
  line-height: 1.25;
  padding-left: 0.9em;
  color: #fbf7ee;
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.12);
}

.verse-credit {
  display: block;
  margin-top: 0.6em;
  font-weight: 700;
  font-size: 12.5px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #a9a398;
  opacity: 0;
}

.enter {
  display: inline-block;
  margin-top: clamp(22px, 4vh, 40px);
  font-family: var(--pixel);
  font-size: 19px;
  letter-spacing: 0.06em;
  color: #ece6da;
  opacity: 0;
}

.enter:hover {
  color: #fff;
}

.skip {
  position: absolute;
  z-index: 2;
  right: calc(var(--gutter) + 6px);
  bottom: calc(env(safe-area-inset-bottom, 0px) + 18px);
  font-family: var(--pixel);
  font-size: 15px;
  letter-spacing: 0.06em;
  color: #8c877e;
  transition: color 0.3s ease;
}

.skip:hover {
  color: #ece6da;
}

/* Lines come up out of the dark in place, without sliding. */
@keyframes verse-in {
  from { opacity: 0; filter: blur(3px); }
  to { opacity: 1; filter: blur(0); }
}

/* ---------- Paper: the folio, the index and the notes ---------- */

/* The panels sit above the moving grain and the flicker, and carry a grain
   of their own printed into the paper, so they stay still while the sky
   around them runs like film. */
.panel {
  position: fixed;
  z-index: 62;
  top: 0;
  bottom: 0;
  width: var(--folio-w);
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
  color: var(--paper-ink);
  background:
    var(--paper-grain, none),
    radial-gradient(circle at 12% 18%, rgba(140, 104, 50, 0.1) 0 3px, transparent 26px),
    radial-gradient(circle at 78% 64%, rgba(140, 104, 50, 0.08) 0 2px, transparent 20px),
    radial-gradient(circle at 34% 86%, rgba(140, 104, 50, 0.09) 0 4px, transparent 34px),
    radial-gradient(circle at 88% 8%, rgba(140, 104, 50, 0.07) 0 2px, transparent 18px),
    linear-gradient(180deg, var(--paper), var(--paper-2));
  box-shadow: inset 0 0 70px rgba(110, 80, 30, 0.28), 0 0 60px rgba(0, 0, 0, 0.6);
  padding-block: calc(env(safe-area-inset-top, 0px) + 26px) calc(env(safe-area-inset-bottom, 0px) + 56px);
  padding-inline: 38px;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s linear 0.7s;
  visibility: hidden;
}

.panel.right {
  right: 0;
  transform: translateX(104%);
}

.panel.left {
  left: 0;
  transform: translateX(-104%);
}

.panel.open {
  transform: none;
  visibility: visible;
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), visibility 0s;
}

.panel-close {
  position: absolute;
  top: calc(env(safe-area-inset-top, 0px) + 14px);
  right: 16px;
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  font-family: var(--pixel);
  font-size: 20px;
  color: var(--paper-muted);
  transition: color 0.3s ease;
}

.panel-close:hover {
  color: var(--paper-ink);
}

.panel :focus-visible {
  outline-color: var(--atlas-blue);
}

.fig-no {
  margin: 0;
  font-family: var(--pixel);
  font-size: 16px;
  letter-spacing: 0.08em;
  color: var(--paper-muted);
}

.panel h2 {
  margin: 8px 0 0;
  font-weight: 700;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--paper-ink);
  text-wrap: balance;
}

.panel h2:focus {
  outline: none;
}

.panel h3 {
  margin: 0 0 12px;
  font-family: var(--pixel);
  font-weight: 400;
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--paper-muted);
}

.aka {
  margin: 4px 0 0;
  font-size: 17px;
  color: var(--paper-muted);
}

/* The plate: the figure as an engraving, framed with a double rule. */
.plate {
  margin: 20px 0 0;
  padding: 10px;
  border: 1px solid var(--paper-rule);
  outline: 1px solid var(--paper-rule);
  outline-offset: 3px;
  background: rgba(255, 250, 238, 0.25);
}

.diagram {
  display: block;
  width: 100%;
  height: auto;
  max-height: 220px;
}

.diagram .ln {
  stroke: var(--atlas-blue);
  stroke-width: 1;
  opacity: 0.85;
}

.diagram .dg {
  fill: var(--paper-gold);
}

.diagram text {
  fill: var(--atlas-blue);
  font-family: var(--serif);
  font-weight: 300;
}

.plate figcaption {
  margin: 8px 2px 0;
  font-size: 14px;
  line-height: 1.45;
  color: var(--paper-muted);
}

.plate figcaption .px {
  color: var(--paper-ink);
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  justify-content: space-between;
  gap: 8px;
  margin: 22px 0 0;
  padding: 12px 0;
  border-top: 1px solid var(--paper-rule);
  border-bottom: 1px solid var(--paper-rule);
}

.stats div {
  display: grid;
  gap: 0;
}

.stats dt {
  font-size: 14px;
  white-space: nowrap;
  color: var(--paper-muted);
}

.stats dd {
  margin: 0;
  font-family: var(--pixel);
  font-size: 26px;
  line-height: 1.15;
  letter-spacing: 0.02em;
  color: var(--paper-ink);
}

.ephemeris {
  margin: 22px 0 0;
}

.ephemeris svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.ephemeris .bar {
  fill: var(--paper-ink);
  opacity: 0.82;
}

.ephemeris .base {
  stroke: var(--paper-rule);
  stroke-width: 1;
}

.ephemeris .tick {
  fill: var(--paper-muted);
  font-family: var(--pixel);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.ephemeris .cursor {
  fill: rgba(53, 80, 106, 0.16);
}

.ephemeris-note {
  margin: 8px 0 0;
  font-family: var(--pixel);
  font-size: 16px;
  line-height: 1.45;
  letter-spacing: 0.02em;
  color: var(--paper-muted);
}

.story {
  margin: 28px 0 0;
}

/* Running text is set in the pixel face, a plainer voice under the names
   and headings in Basteleur; the excerpts from the myth take its italic. */
.story p {
  margin: 0 0 1em;
  font-family: var(--pixel);
  font-size: 19px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper-ink);
  max-width: 40em;
}

.excerpts {
  margin: 28px 0 0;
}

.excerpts blockquote {
  position: relative;
  margin: 0 0 24px;
  padding: 0 0 0 26px;
}

.excerpts blockquote::before {
  content: "\201C";
  position: absolute;
  left: -2px;
  top: -6px;
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  color: var(--paper-gold);
}

.excerpts blockquote p {
  margin: 0;
  font-family: var(--pixel);
  font-style: italic;
  font-size: 19px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper-ink);
}

.excerpts cite {
  display: block;
  margin-top: 6px;
  font-style: normal;
  font-size: 14.5px;
  color: var(--paper-muted);
}

.excerpts cite .px {
  margin-right: 0.5em;
  color: var(--paper-ink);
}

.kin {
  margin: 28px 0 0;
}

.kin ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.kin button {
  font-size: 17px;
  color: var(--atlas-blue);
  border-bottom: 1px solid rgba(53, 80, 106, 0.35);
  transition: color 0.3s ease, border-color 0.3s ease;
}

.kin button:hover {
  color: var(--paper-ink);
  border-bottom-color: var(--paper-ink);
}

/* The index, with dotted leaders like the back of an old atlas. */
.catalogue-intro,
.about p {
  margin: 12px 0 0;
  font-family: var(--pixel);
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--paper-ink);
  max-width: 40em;
}

.catalogue-group {
  margin: 26px 0 0;
}

.catalogue-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0;
}

.catalogue-list button {
  width: 100%;
  display: grid;
  grid-template-columns: 20px auto 1fr auto;
  align-items: baseline;
  gap: 8px;
  padding: 5px 0;
  text-align: left;
  color: var(--paper-ink);
}

.catalogue-list button:hover .nm,
.catalogue-list button:focus-visible .nm {
  color: var(--atlas-blue);
}

.catalogue-list .icon {
  align-self: center;
  justify-self: center;
  fill: var(--paper-gold);
}

.catalogue-list .nm {
  font-size: 17px;
  transition: color 0.3s ease;
}

.catalogue-list .leader {
  align-self: end;
  margin-bottom: 0.4em;
  border-bottom: 1px dotted rgba(29, 26, 22, 0.45);
}

.catalogue-list .ct {
  font-family: var(--pixel);
  font-size: 16px;
  color: var(--paper-muted);
}

.catalogue-list .neb-dot {
  align-self: center;
  justify-self: center;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  opacity: 0.75;
  background-image: radial-gradient(circle, currentColor 0.8px, transparent 1.2px);
  background-size: 3px 3px;
}

.about p + p {
  margin-top: 1em;
}

.about h3 {
  margin-top: 28px;
}

.about a {
  color: var(--atlas-blue);
  text-decoration-color: rgba(53, 80, 106, 0.4);
  text-underline-offset: 3px;
}

/* Tooltip for the chapter chart */
#tip {
  position: fixed;
  z-index: 70;
  pointer-events: none;
  padding: 5px 10px 6px;
  background: var(--paper-ink);
  font-family: var(--pixel);
  font-size: 15px;
  letter-spacing: 0.04em;
  line-height: 1.35;
  color: var(--paper);
  white-space: nowrap;
}

/* ---------- Narrow screens ---------- */

@media (max-width: 760px) {
  .masthead-title {
    font-size: 28px;
  }

  .masthead-sub {
    font-size: 13px;
  }

  .controls {
    top: auto;
    right: 0;
    left: 0;
    bottom: 0;
    justify-content: center;
    gap: 4px 22px;
    padding: 12px var(--gutter) calc(env(safe-area-inset-bottom, 0px) + 38px);
    background: linear-gradient(0deg, rgba(8, 9, 11, 0.94), rgba(8, 9, 11, 0));
  }

  .site-foot {
    left: 0;
    right: 0;
    bottom: calc(env(safe-area-inset-bottom, 0px) + 12px);
    text-align: center;
    font-size: 14px;
  }

  .controls button {
    font-size: 16px;
  }

  .hint {
    bottom: calc(env(safe-area-inset-bottom, 0px) + 90px);
    font-size: 15px;
  }

  .verse .spoken .ln {
    padding-left: 0.5em;
    font-size: 1.45em;
  }

  .panel {
    padding-inline: 22px;
  }

  .panel.right {
    top: auto;
    width: 100%;
    height: 84%;
    transform: translateY(104%);
    padding-top: 22px;
  }

  .panel.left {
    width: 100%;
  }

  .panel.right.open,
  .panel.left.open {
    transform: none;
  }

  .panel.right .panel-close {
    top: 8px;
  }

  .stats {
    grid-template-columns: repeat(2, auto);
    justify-content: start;
    gap: 10px 44px;
  }

  body.has-sel .masthead {
    opacity: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transition-delay: 0s !important;
  }

  .grain,
  .flicker,
  .card-inner,
  .con .glyph {
    animation: none;
  }

  .card.shown .verse .ln,
  .card.shown .verse-credit,
  .card.shown .enter {
    animation: none;
    opacity: 1;
  }
}