:root {
  font-family: "IM Fell English", Georgia, serif;
  color: #2f1d13;
  background: #aa906b;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }
html, body, #app { width: 100%; height: 100%; margin: 0; }
body { overflow: hidden; }
button { font: inherit; }
button:focus-visible,
.portfolio-button:focus-visible { outline: 2px solid #fff1cc; outline-offset: 3px; }

.site-shell {
  position: relative;
  width: 100%;
  height: 100%;
  min-height: 560px;
  isolation: isolate;
  overflow: hidden;
  background: #aa906b;
}

.linen-field {
  position: absolute;
  inset: -4%;
  z-index: -5;
  background-color: #b59a73;
  background-image:
    linear-gradient(rgba(92, 61, 37, .11), rgba(255, 244, 211, .06)),
    url("../images/linen-canvas.jpg");
  background-size: auto, cover;
  background-position: center, center;
  background-repeat: no-repeat, no-repeat;
  filter: saturate(.72) contrast(.96);
  transform: scale(1.02);
}

.ambient-vignette {
  position: absolute;
  inset: 0;
  z-index: -4;
  background:
    radial-gradient(circle at 52% 42%, rgba(248, 231, 187, .34), transparent 38%),
    radial-gradient(circle at 50% 52%, transparent 34%, rgba(55, 31, 20, .33) 108%);
  pointer-events: none;
}

.canvas-wrap {
  position: absolute;
  inset: 0;
  z-index: 2;
  touch-action: none;
}

.canvas-wrap canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}

.calligraphy-field {
  position: absolute;
  inset: 0;
  z-index: -1;
  display: grid;
  align-content: center;
  overflow: hidden;
  pointer-events: none;
  opacity: .42;
  color: rgba(67, 34, 21, .78);
  mix-blend-mode: multiply;
  transform: rotate(-8deg) scale(1.15);
}

.calligraphy-track {
  display: flex;
  width: max-content;
  white-space: nowrap;
  font-family: "UnifrakturCook", "IM Fell English", Georgia, serif;
  font-size: clamp(3.4rem, 8.2vw, 8.5rem);
  font-weight: 700;
  line-height: .94;
  letter-spacing: .005em;
  text-shadow: 0 1px 0 rgba(255, 239, 199, .4);
  will-change: transform;
}

.calligraphy-track span { display: inline-block; }
.calligraphy-track--one { animation: scripture-scroll 46s linear infinite; }
.calligraphy-track--two {
  margin-top: 6vh;
  opacity: .42;
  animation: scripture-scroll-reverse 58s linear infinite;
}

@keyframes scripture-scroll {
  from { transform: translate3d(0, 0, 0); }
  to { transform: translate3d(-50%, 0, 0); }
}
@keyframes scripture-scroll-reverse {
  from { transform: translate3d(-50%, 0, 0); }
  to { transform: translate3d(0, 0, 0); }
}

.interface {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
}

.masthead {
  position: absolute;
  top: clamp(1rem, 3vh, 2.5rem);
  left: 50%;
  width: min(92vw, 900px);
  transform: translateX(-50%);
  text-align: center;
  color: #2a170f;
  text-shadow: 0 1px 0 rgba(246, 224, 179, .42);
}

.eyebrow {
  margin: 0 0 .3rem;
  font-size: clamp(.66rem, 1vw, .88rem);
  letter-spacing: .21em;
  text-transform: uppercase;
}

.masthead h1 {
  margin: 0;
  font-family: "IM Fell English", Georgia, serif;
  font-size: clamp(2.3rem, 5vw, 5.7rem);
  font-weight: 400;
  letter-spacing: -.025em;
  line-height: .96;
}

.instruction {
  margin: .5rem 0 0;
  font-style: italic;
  font-size: clamp(.78rem, 1.2vw, 1rem);
  opacity: .76;
}

.edition-switch {
  position: absolute;
  top: 50%;
  left: clamp(.8rem, 2.4vw, 2.5rem);
  display: grid;
  gap: .5rem;
  transform: translateY(-50%);
  pointer-events: auto;
}

.edition-switch button,
.book-controls button,
.fullscreen-button,
.portfolio-button,
.error-panel button {
  border: 1px solid rgba(62, 35, 22, .48);
  background: rgba(222, 203, 164, .72);
  color: #392116;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.28), 0 8px 24px rgba(60,35,23,.1);
  backdrop-filter: blur(10px);
  transition: transform .2s ease, background .2s ease, color .2s ease, opacity .2s ease;
  cursor: pointer;
}

.edition-switch button {
  width: 10.5rem;
  padding: .7rem .85rem;
  text-align: left;
  font-size: .87rem;
}
.edition-switch button:hover,
.book-controls button:hover:not(:disabled),
.fullscreen-button:hover,
.portfolio-button:hover,
.error-panel button:hover { transform: translateY(-2px); }
.edition-switch button.is-active {
  color: #f0dfbc;
  background: rgba(66, 36, 24, .9);
}

.book-controls {
  position: absolute;
  right: clamp(.8rem, 2.4vw, 2.5rem);
  bottom: clamp(1rem, 3vh, 2.2rem);
  display: grid;
  grid-template-columns: 3rem minmax(6.8rem, auto) 3rem;
  gap: .45rem;
  pointer-events: auto;
}

.book-controls button {
  min-height: 2.8rem;
  padding: .55rem .8rem;
  border-radius: 2px;
}
.book-controls button:disabled { opacity: .32; cursor: default; }
.page-indicator { min-width: 7.6rem; }
.sound-toggle {
  grid-column: 1 / -1;
  min-height: 2rem !important;
  font-size: .77rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.fullscreen-button {
  position: absolute;
  top: clamp(.8rem, 2.4vw, 1.5rem);
  right: clamp(.8rem, 2.4vw, 1.5rem);
  z-index: 6;
  min-height: 2.25rem;
  padding: .42rem .72rem;
  font-size: .72rem;
  letter-spacing: .07em;
  text-transform: uppercase;
  pointer-events: auto;
}

.portfolio-button {
  position: absolute;
  top: clamp(.8rem, 2.4vw, 1.5rem);
  left: clamp(.8rem, 2.4vw, 1.5rem);
  z-index: 6;
  display: inline-flex;
  min-height: 2.25rem;
  align-items: center;
  gap: .42rem;
  padding: .42rem .72rem;
  border: 1px solid rgba(62, 35, 22, .48);
  color: #392116;
  font-size: .72rem;
  letter-spacing: .07em;
  line-height: 1;
  text-decoration: none;
  text-transform: uppercase;
  white-space: nowrap;
  pointer-events: auto;
}

.colophon {
  position: absolute;
  left: clamp(.8rem, 2.4vw, 2.5rem);
  bottom: clamp(1rem, 3vh, 2.2rem);
  display: flex;
  gap: .7rem;
  align-items: center;
  font-size: .79rem;
  letter-spacing: .05em;
  opacity: .76;
}

.loading-panel,
.error-panel {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: grid;
  place-content: center;
  justify-items: center;
  text-align: center;
  padding: 2rem;
  color: #2a170f;
  background: rgba(177, 150, 109, .82);
  backdrop-filter: blur(12px);
  transition: opacity .55s ease, visibility .55s ease;
}
.loading-panel.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loading-mark {
  display: grid;
  place-items: center;
  width: 4.3rem;
  height: 4.3rem;
  border: 1px solid rgba(54, 31, 20, .45);
  font-size: 2.5rem;
  background: rgba(236, 216, 175, .55);
  box-shadow: inset 0 0 0 6px rgba(84, 47, 29, .06);
}
.loading-panel p { margin: 1rem 0 .7rem; font-style: italic; }
.loading-line {
  width: min(60vw, 20rem);
  height: 2px;
  background: rgba(64, 37, 23, .2);
  overflow: hidden;
}
.loading-line span {
  display: block;
  width: 0;
  height: 100%;
  background: #4b2a1b;
  transition: width .25s ease;
}
.error-panel[hidden] { display: none; }
.error-panel h2 { margin: 0 0 .6rem; font-weight: 400; }
.error-panel p { max-width: 36rem; margin: 0 0 1rem; }
.error-panel button { padding: .55rem 1rem; }
.error-panel {
  align-content: start;
  overflow-y: auto;
  padding-block: clamp(2rem, 8vh, 5rem);
}
.error-panel__fallback {
  width: min(100%, 42rem);
  margin: .4rem 0 1.25rem;
  padding: 1rem 1.15rem;
  border: 1px solid rgba(62, 35, 22, .32);
  background: rgba(236, 216, 175, .5);
  text-align: left;
}
.error-panel__fallback h3 { margin: 0 0 .55rem; font-weight: 600; }
.error-panel__fallback p { margin-bottom: .75rem; }
.error-panel__fallback ol { margin: 0 0 .85rem 1.25rem; line-height: 1.5; }
.error-panel__fallback li + li { margin-top: .35rem; }
.error-panel__fallback a {
  color: #321d13;
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 760px) {
  .site-shell { min-height: 520px; }
  .masthead { top: 3.85rem; }
  .masthead h1 { font-size: clamp(2rem, 9vw, 3.4rem); }
  .eyebrow { display: none; }
  .instruction { display: none; }
  .edition-switch {
    top: auto;
    left: 50%;
    bottom: 5.15rem;
    grid-template-columns: 1fr 1fr;
    width: min(94vw, 24rem);
    transform: translateX(-50%);
  }
  .edition-switch button { width: auto; text-align: center; padding: .62rem .4rem; font-size: .72rem; }
  .book-controls {
    right: 50%;
    bottom: .65rem;
    transform: translateX(50%);
  }
  .colophon { display: none; }
  .calligraphy-track { font-size: 5.4rem; }
  .portfolio-button { top: .65rem; left: .65rem; min-height: 2.8rem; padding: .55rem .7rem; font-size: .66rem; }
  .fullscreen-button { top: .65rem; right: .65rem; bottom: auto; font-size: 0; width: 2.8rem; padding: 0; }
  .fullscreen-button::after { content: "⛶"; font-size: 1.15rem; }
}

@media (min-width: 761px) and (max-width: 1050px) {
  .masthead { top: 3.85rem; }
}

@media (max-height: 650px) and (min-width: 761px) {
  .masthead { top: 3.65rem; }
  .masthead h1 { font-size: 3rem; }
  .instruction { display: none; }
  .edition-switch { transform: translateY(-38%); }
}

@media (prefers-reduced-motion: reduce) {
  .calligraphy-track { animation: none; }
  .calligraphy-track--one { transform: translateX(-12%); }
  .calligraphy-track--two { transform: translateX(-32%); }
}