:root {
  --msk-purple: #6d548f;
  --msk-purple-dark: #4d386d;
  --msk-purple-soft: #f2eef6;
  --msk-gold: #c7a13a;
  --msk-gold-light: #ead99d;
  --ink: #29272d;
  --muted: #625e69;
  --paper: #ffffff;
  --surface: #f7f4f9;
  --line: #ddd5e6;
  --focus: #1e73be;
  --zoom: 1;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: transparent;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 0;
  background: transparent;
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  background: transparent;
  color: var(--ink);
  line-height: 1.5;
}

button,
input,
a {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.app {
  width: min(100%, 1240px);
  margin: 0 auto;
  padding: 14px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 14px 16px;
  border-bottom: 3px solid var(--msk-gold);
}

.eyebrow {
  margin: 0 0 2px;
  color: var(--msk-purple);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  color: var(--msk-purple-dark);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.12;
}

.document-actions,
.fallback-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.button,
.tool-button {
  min-height: 42px;
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 14px;
}

.button-primary {
  background: var(--msk-purple);
  color: #fff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--msk-purple-dark);
}

.button-secondary {
  border-color: var(--msk-purple);
  background: #fff;
  color: var(--msk-purple-dark);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  background: var(--msk-purple-soft);
}

.viewer {
  margin-top: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: linear-gradient(180deg, #fff 0%, var(--surface) 100%);
  box-shadow: 0 8px 28px rgb(45 31 62 / 10%);
  overflow: hidden;
}

.viewer:fullscreen {
  width: 100vw;
  height: 100vh;
  border: 0;
  border-radius: 0;
  overflow: auto;
  background: #eee9f2;
}

.viewer.is-pseudo-fullscreen {
  position: fixed;
  inset: 0;
  z-index: 99999;
  width: 100vw;
  height: 100vh;
  margin: 0;
  border: 0;
  border-radius: 0;
  overflow: auto;
  background: #eee9f2;
}

body.has-pseudo-fullscreen {
  overflow: hidden;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 12px;
  padding: 10px 12px;
  background: var(--msk-purple-dark);
  color: #fff;
}

.toolbar-group {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tool-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 11px;
  border-color: rgb(255 255 255 / 42%);
  background: rgb(255 255 255 / 10%);
  color: #fff;
}

.tool-button:hover,
.tool-button:focus-visible {
  border-color: var(--msk-gold-light);
  background: rgb(255 255 255 / 20%);
}

.tool-button:disabled {
  cursor: not-allowed;
  opacity: 0.45;
}

.tool-button.compact,
.tool-button.icon-only {
  min-height: 36px;
  padding: 5px 9px;
}

.tool-button.icon-only {
  min-width: 38px;
  font-size: 1.25rem;
}

.page-controls label {
  font-weight: 700;
}

.page-controls input {
  width: 62px;
  min-height: 36px;
  padding: 4px 6px;
  border: 2px solid transparent;
  border-radius: 5px;
  background: #fff;
  color: var(--ink);
  text-align: center;
}

.zoom-controls output {
  min-width: 48px;
  font-variant-numeric: tabular-nums;
  text-align: center;
}

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

.status-row {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 8px 14px;
  border-bottom: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  font-size: 0.9rem;
}

.status,
.page-status {
  margin: 0;
}

.status.is-error {
  color: #a21d27;
  font-weight: 700;
}

.page-status {
  flex: 0 0 auto;
  color: var(--msk-purple-dark);
  font-weight: 750;
  font-variant-numeric: tabular-nums;
}

.book-viewport {
  position: relative;
  width: 100%;
  min-width: 0;
  padding: 16px;
  overflow: auto;
  overscroll-behavior: contain;
  background:
    radial-gradient(circle at 50% 10%, rgb(255 255 255 / 90%), transparent 58%),
    linear-gradient(135deg, #e9e2ee, #d9cfdf);
  scrollbar-color: var(--msk-purple) #eee8f2;
}

.book-zoom {
  width: 100%;
  min-width: 0;
  transform: scale(var(--zoom));
  transform-origin: top left;
}

.book {
  margin: 0 auto;
  filter: drop-shadow(0 14px 16px rgb(32 24 38 / 24%));
}

.page {
  position: relative;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgb(61 49 70 / 12%);
}

.page::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, #f4f1f5 18%, #fff 38%, #f4f1f5 58%);
  background-size: 220% 100%;
  animation: loading-sheen 1.4s ease-in-out infinite;
}

.page.is-rendered::before {
  display: none;
}

.page-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #fff;
  opacity: 0;
}

.page.is-rendered .page-image {
  opacity: 1;
}

.page-loading {
  position: absolute;
  inset: 50% auto auto 50%;
  z-index: 1;
  transform: translate(-50%, -50%);
  color: var(--msk-purple-dark);
  font-size: 0.9rem;
  font-weight: 700;
  white-space: nowrap;
}

.page.is-rendered .page-loading {
  display: none;
}

.fallback-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 14px;
  padding: 16px;
  border-left: 5px solid var(--msk-gold);
  border-radius: 6px;
  background: #fffdf7;
  box-shadow: 0 2px 10px rgb(47 36 55 / 8%);
}

.fallback-card h2 {
  margin-bottom: 4px;
  color: var(--msk-purple-dark);
  font-size: 1.1rem;
}

.fallback-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.app.is-ready .fallback-card {
  display: none;
}

.app.has-error .fallback-card {
  display: flex;
}

.viewer-help,
.noscript-message {
  margin: 0;
  padding: 10px 14px 14px;
  color: var(--muted);
  font-size: 0.88rem;
}

.noscript-message {
  margin: 14px;
  border: 2px solid var(--msk-gold);
  background: #fff;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

@keyframes loading-sheen {
  from { background-position: 100% 0; }
  to { background-position: -100% 0; }
}

@media (max-width: 720px) {
  .app {
    padding: 6px;
  }

  .app-header {
    align-items: flex-start;
    padding: 10px 8px 12px;
  }

  .document-actions {
    display: none;
  }

  .viewer {
    margin-top: 8px;
    border-radius: 7px;
  }

  .toolbar {
    justify-content: space-between;
    gap: 7px;
    padding: 8px;
  }

  .toolbar-group {
    gap: 4px;
  }

  .navigation-controls,
  .page-controls {
    flex: 1 1 auto;
  }

  .page-controls {
    justify-content: flex-end;
  }

  .zoom-controls {
    flex: 1 1 auto;
  }

  .view-controls {
    flex: 0 0 auto;
  }

  .tool-label {
    display: none;
  }

  .status-row {
    padding: 7px 9px;
    font-size: 0.8rem;
  }

  .status {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .book-viewport {
    max-height: none;
    padding: 8px 4px 12px;
  }

  .book {
    filter: drop-shadow(0 8px 10px rgb(32 24 38 / 22%));
  }

  .fallback-card {
    align-items: stretch;
    flex-direction: column;
    margin: 10px;
  }

  .fallback-actions .button {
    flex: 1 1 140px;
  }
}

@media (max-width: 410px) {
  .page-controls label,
  #page-total {
    font-size: 0.82rem;
  }

  .page-controls input {
    width: 50px;
  }

  .tool-button {
    padding-inline: 8px;
  }
}

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

  .page::before {
    animation: none;
    background: #f3f0f5;
  }
}

@media (forced-colors: active) {
  .page,
  .viewer,
  .tool-button,
  .button {
    border: 1px solid CanvasText;
  }
}