:root {
  --page-ratio: 0.713125;
  --ink: #171614;
  --ink-soft: #5f5952;
  --paper: #f6f3ed;
  --paper-deep: #e8e1d7;
  --accent: #bda286;
  --accent-light: #e9ddd0;
  --surface: #211f1c;
  --surface-2: #2a2723;
  --line: rgba(255, 255, 255, 0.16);
  --toolbar-height: 68px;
  --footer-height: 64px;
  --page-shadow: 0 18px 50px rgba(0, 0, 0, 0.34), 0 2px 8px rgba(0, 0, 0, 0.24);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--surface);
}

body {
  color: #fff;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button {
  font: inherit;
}

svg {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.catalog-app {
  width: 100%;
  height: 100dvh;
  min-height: 480px;
  display: grid;
  grid-template-rows: var(--toolbar-height) minmax(0, 1fr) var(--footer-height);
  background:
    radial-gradient(circle at 50% 25%, rgba(255, 255, 255, 0.075), transparent 38%),
    linear-gradient(150deg, #2a2723 0%, #1c1a18 56%, #151412 100%);
  isolation: isolate;
}

.catalog-toolbar,
.catalog-footer {
  position: relative;
  z-index: 60;
  display: flex;
  align-items: center;
  gap: 18px;
  padding-right: max(18px, env(safe-area-inset-right));
  padding-left: max(18px, env(safe-area-inset-left));
  background: rgba(24, 22, 20, 0.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.catalog-toolbar {
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.catalog-footer {
  justify-content: center;
  border-top: 1px solid var(--line);
  padding-bottom: env(safe-area-inset-bottom);
}

.catalog-brand {
  display: inline-flex;
  flex-direction: column;
  color: #fff;
  text-decoration: none;
  line-height: 1;
  min-width: 145px;
}

.catalog-brand__name {
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.17em;
}

.catalog-brand__edition {
  margin-top: 5px;
  color: var(--accent-light);
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.23em;
}

.catalog-toolbar__title {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  max-width: min(42vw, 520px);
  overflow: hidden;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-overflow: ellipsis;
  text-transform: uppercase;
  white-space: nowrap;
}

.catalog-toolbar__actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.icon-button,
.footer-nav,
.reader-nav {
  border: 0;
  color: #fff;
  cursor: pointer;
  transition: background-color 160ms ease, color 160ms ease, opacity 160ms ease, transform 160ms ease;
}

.icon-button {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  border-radius: 50%;
  background: transparent;
  text-decoration: none;
}

.icon-button:hover,
.icon-button:focus-visible {
  background: rgba(255, 255, 255, 0.1);
}

.icon-button:focus-visible,
.footer-nav:focus-visible,
.reader-nav:focus-visible,
.shop-button:focus-visible,
.context-actions a:focus-visible,
.overview-card:focus-visible,
.book-stage:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.icon-button--light {
  color: var(--ink);
}

.icon-button--light:hover,
.icon-button--light:focus-visible {
  background: rgba(0, 0, 0, 0.07);
}

.icon-exit-fullscreen,
:fullscreen .icon-fullscreen {
  display: none;
}

:fullscreen .icon-exit-fullscreen {
  display: block;
}

.catalog-close {
  display: none;
}

.catalog-app.is-embedded .catalog-close {
  display: inline-grid;
}

.catalog-reader {
  position: relative;
  min-width: 0;
  min-height: 0;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) 64px;
  align-items: center;
  padding: 18px 12px;
}

.reader-nav {
  width: 48px;
  height: 72px;
  display: grid;
  place-items: center;
  justify-self: center;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.055);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.reader-nav:hover,
.reader-nav:focus-visible {
  background: rgba(255, 255, 255, 0.13);
  transform: scale(1.04);
}

.reader-nav:disabled,
.footer-nav:disabled {
  cursor: default;
  opacity: 0.26;
  transform: none;
}

.book-stage {
  position: relative;
  justify-self: center;
  overflow: visible;
  perspective: 2500px;
  touch-action: pan-y;
  user-select: none;
  -webkit-user-select: none;
}

.book-spread {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
}

.book-page {
  position: absolute;
  top: 0;
  width: 50%;
  height: 100%;
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--page-shadow);
  transition: opacity 140ms ease;
}

.book-page--left {
  left: 0;
  border-radius: 4px 0 0 4px;
}

.book-page--right {
  right: 0;
  border-radius: 0 4px 4px 0;
}

.book-page.is-empty {
  pointer-events: none;
  opacity: 0;
  box-shadow: none;
}

.page-picture,
.page-image {
  display: block;
  width: 100%;
  height: 100%;
}

.page-image {
  object-fit: cover;
  background: var(--paper);
  -webkit-user-drag: none;
}

.book-spine {
  position: absolute;
  z-index: 12;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 24px;
  pointer-events: none;
  transform: translateX(-50%);
  background: linear-gradient(90deg, rgba(0, 0, 0, 0.14), rgba(255, 255, 255, 0.08) 46%, rgba(0, 0, 0, 0.18));
  mix-blend-mode: multiply;
  opacity: 0.48;
}

.turning-page {
  position: absolute;
  z-index: 30;
  top: 0;
  display: none;
  width: 50%;
  height: 100%;
  transform-style: preserve-3d;
  will-change: transform;
}

.turning-page.is-active {
  display: block;
}

.turning-page__face {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: var(--paper);
  box-shadow: var(--page-shadow);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.turning-page__front {
  transform: rotateY(0deg);
}

.turning-page__back {
  transform: rotateY(180deg);
}

.turning-page--next {
  left: 50%;
  transform-origin: left center;
  animation: turn-next 620ms cubic-bezier(0.4, 0.05, 0.2, 1) forwards;
}

.turning-page--previous {
  left: 0;
  transform-origin: right center;
  animation: turn-previous 620ms cubic-bezier(0.4, 0.05, 0.2, 1) forwards;
}

@keyframes turn-next {
  0% { transform: rotateY(0deg); }
  100% { transform: rotateY(-180deg); }
}

@keyframes turn-previous {
  0% { transform: rotateY(0deg); }
  100% { transform: rotateY(180deg); }
}

.context-actions {
  position: absolute;
  z-index: 45;
  right: 18px;
  bottom: 18px;
  left: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px 12px 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 999px;
  background: rgba(24, 22, 20, 0.82);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.24);
  color: #fff;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 180ms ease, transform 180ms ease;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.book-stage:hover .context-actions,
.book-stage:focus-within .context-actions,
.context-actions.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.context-actions[hidden] {
  display: none;
}

.context-actions__label {
  color: rgba(255, 255, 255, 0.68);
  font-size: 0.67rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.context-actions__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 7px;
}

.context-actions a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 34px;
  padding: 7px 13px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 700;
  line-height: 1.15;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 150ms ease, transform 150ms ease;
}

.context-actions a:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

.context-actions a svg {
  width: 14px;
  height: 14px;
}

.catalog-loading {
  position: absolute;
  z-index: 50;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 11px;
  border-radius: 5px;
  background: rgba(32, 29, 26, 0.82);
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  transition: opacity 220ms ease, visibility 220ms ease;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.catalog-loading.is-hidden {
  visibility: hidden;
  opacity: 0;
}

.catalog-loading__spinner {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(255, 255, 255, 0.22);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.catalog-footer {
  gap: 10px;
}

.footer-nav {
  width: 38px;
  height: 38px;
  display: none;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.07);
}

.page-status {
  min-width: 118px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  text-align: center;
}

.shop-button {
  position: absolute;
  right: max(18px, env(safe-area-inset-right));
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
  padding: 8px 15px;
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 999px;
  color: #fff;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.shop-button:hover {
  background: #fff;
  color: var(--ink);
}

.shop-button svg {
  width: 15px;
  height: 15px;
}

.overview-dialog {
  width: min(1180px, calc(100vw - 32px));
  height: min(820px, calc(100dvh - 32px));
  max-width: none;
  max-height: none;
  margin: auto;
  padding: 0;
  overflow: hidden;
  border: 0;
  border-radius: 8px;
  background: #f4f0e9;
  color: var(--ink);
  box-shadow: 0 30px 90px rgba(0, 0, 0, 0.48);
}

.overview-dialog::backdrop {
  background: rgba(15, 14, 13, 0.78);
  backdrop-filter: blur(7px);
  -webkit-backdrop-filter: blur(7px);
}

.overview-dialog__header {
  position: sticky;
  z-index: 2;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
  padding: 18px 24px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  background: rgba(244, 240, 233, 0.94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.overview-dialog__eyebrow {
  display: block;
  margin-bottom: 5px;
  color: #8f735a;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.16em;
}

.overview-dialog h2 {
  margin: 0;
  font-size: clamp(1.25rem, 2.1vw, 1.8rem);
  letter-spacing: -0.025em;
}

.overview-grid {
  height: calc(100% - 82px);
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(135px, 1fr));
  align-content: start;
  gap: 18px;
  overflow: auto;
  padding: 24px;
  overscroll-behavior: contain;
}

.overview-card {
  display: block;
  padding: 0;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.11);
  border-radius: 3px;
  background: #fff;
  color: inherit;
  cursor: pointer;
  box-shadow: 0 8px 22px rgba(69, 57, 45, 0.1);
  text-align: left;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.overview-card:hover,
.overview-card.is-current {
  border-color: #8d725a;
  box-shadow: 0 12px 30px rgba(69, 57, 45, 0.18);
  transform: translateY(-3px);
}

.overview-card img {
  display: block;
  width: 100%;
  aspect-ratio: var(--page-ratio);
  object-fit: cover;
  background: #eee9e1;
}

.overview-card span {
  display: block;
  padding: 9px 10px;
  color: #514b45;
  font-size: 0.72rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.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;
}

.noscript-message {
  position: fixed;
  z-index: 100;
  inset: 0;
  display: grid;
  place-content: center;
  padding: 30px;
  background: var(--surface);
  color: #fff;
  text-align: center;
}

.noscript-message a {
  color: #fff;
}

.copy-toast {
  position: fixed;
  z-index: 1000;
  top: calc(var(--toolbar-height) + 14px);
  left: 50%;
  padding: 9px 14px;
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  font-size: 0.76rem;
  font-weight: 700;
  transform: translate(-50%, -10px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease, transform 180ms ease;
}

.copy-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 899px) {
  :root {
    --toolbar-height: 58px;
    --footer-height: 58px;
  }

  .catalog-toolbar {
    gap: 8px;
    padding-right: max(10px, env(safe-area-inset-right));
    padding-left: max(12px, env(safe-area-inset-left));
  }

  .catalog-brand {
    min-width: 0;
  }

  .catalog-brand__name {
    font-size: 0.72rem;
  }

  .catalog-brand__edition {
    font-size: 0.5rem;
  }

  .catalog-toolbar__title {
    display: none;
  }

  .catalog-toolbar__actions {
    gap: 1px;
  }

  .icon-button {
    width: 38px;
    height: 38px;
  }

  #copyButton,
  #pdfButton {
    display: none;
  }

  .catalog-reader {
    grid-template-columns: minmax(0, 1fr);
    padding: 10px 12px;
  }

  .reader-nav {
    display: none;
  }

  .book-page {
    width: 100%;
    border-radius: 4px;
  }

  .book-page--left {
    display: none;
  }

  .book-page--right {
    right: auto;
    left: 0;
  }

  .book-spine {
    display: none;
  }

  .turning-page {
    left: 0 !important;
    width: 100%;
  }

  .turning-page__back {
    display: none;
  }

  .turning-page--next {
    transform-origin: left center;
    animation: mobile-next 420ms cubic-bezier(0.4, 0.05, 0.2, 1) forwards;
  }

  .turning-page--previous {
    transform-origin: right center;
    animation: mobile-previous 420ms cubic-bezier(0.4, 0.05, 0.2, 1) forwards;
  }

  @keyframes mobile-next {
    0% { transform: rotateY(0deg); opacity: 1; }
    100% { transform: rotateY(-86deg); opacity: 0; }
  }

  @keyframes mobile-previous {
    0% { transform: rotateY(0deg); opacity: 1; }
    100% { transform: rotateY(86deg); opacity: 0; }
  }

  .context-actions {
    right: 8px;
    bottom: 8px;
    left: 8px;
    justify-content: space-between;
    gap: 8px;
    padding: 7px 8px 7px 12px;
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }

  .context-actions__label {
    display: none;
  }

  .context-actions__links {
    width: 100%;
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    scrollbar-width: none;
  }

  .context-actions__links::-webkit-scrollbar {
    display: none;
  }

  .context-actions a {
    flex: 0 0 auto;
    min-height: 32px;
    padding: 7px 12px;
    font-size: 0.72rem;
  }

  .footer-nav {
    display: grid;
  }

  .page-status {
    min-width: 84px;
  }

  .shop-button {
    display: none;
  }

  .overview-dialog {
    width: 100vw;
    height: 100dvh;
    border-radius: 0;
  }

  .overview-dialog__header {
    min-height: 68px;
    padding: 12px 15px;
  }

  .overview-grid {
    height: calc(100% - 68px);
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 11px;
    padding: 14px;
  }

  .overview-card span {
    padding: 7px 8px;
    font-size: 0.65rem;
  }
}

@media (max-width: 420px) {
  #overviewButton {
    display: none;
  }

  .overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (hover: none), (pointer: coarse) {
  .context-actions {
    opacity: 1;
    pointer-events: auto;
    transform: none;
  }
}

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