:root {
  color-scheme: dark;
  --background: #121212;
  --text: #dedad1;
  --muted: #77746e;
  --line: #373532;
  --heading: #eeeae1;
  --link: #bcb6aa;
  --panel: #1d1c1a;
  --hover: #181817;
  --cover: rgb(18 18 18 / 92%);
  --scrollbar: #47443f;
  --reader-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --reader-tracking: 0.01em;
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
}

:root[data-font="noto-serif"] {
  --reader-font: "Noto Serif", Georgia, serif;
}

:root[data-font="literata"] {
  --reader-font: "Literata", Georgia, serif;
}

:root[data-font="source-serif"] {
  --reader-font: "Source Serif 4", Georgia, serif;
}

:root[data-font="lora"] {
  --reader-font: "Lora", Georgia, serif;
}

:root[data-font="atkinson"] {
  --reader-font: "Atkinson Hyperlegible", system-ui, sans-serif;
}

:root[data-font="crimson-pro"] {
  --reader-font: "Crimson Pro", Georgia, serif;
}

:root[data-font="alegreya"] {
  --reader-font: "Alegreya", Georgia, serif;
}

:root[data-font="eb-garamond"] {
  --reader-font: "EB Garamond", Georgia, serif;
}

:root[data-font="merriweather"] {
  --reader-font: "Merriweather", Georgia, serif;
}

:root[data-font="system-mono"] {
  --reader-font: ui-monospace, "Cascadia Mono", "Segoe UI Mono", "Liberation Mono", Consolas, monospace;
}

:root[data-palette="geany"] {
  --background: #333d4d;
  --text: #b7c7c2;
  --muted: #648d85;
  --line: #536665;
  --heading: #d2ddd8;
  --link: #83aaa2;
  --panel: #2d3548;
  --hover: #374a5d;
  --cover: rgb(45 53 72 / 94%);
  --scrollbar: #648d85;
}

:root[data-palette="midnight"] {
  --background: #0d1520;
  --text: #cfdae5;
  --muted: #71869b;
  --line: #29394a;
  --heading: #e5edf5;
  --link: #8ab4d8;
  --panel: #152231;
  --hover: #111d2a;
  --cover: rgb(13 21 32 / 94%);
  --scrollbar: #49657e;
}

:root[data-palette="sepia"] {
  --background: #241d16;
  --text: #dfcfb7;
  --muted: #9b8465;
  --line: #4b3d2d;
  --heading: #f1e0c5;
  --link: #c9a66b;
  --panel: #30261c;
  --hover: #392d21;
  --cover: rgb(36 29 22 / 94%);
  --scrollbar: #725c42;
}

:root[data-palette="forest"] {
  --background: #101914;
  --text: #d2dfd4;
  --muted: #718c76;
  --line: #2c4333;
  --heading: #e4eee5;
  --link: #8dbb96;
  --panel: #18261d;
  --hover: #142018;
  --cover: rgb(16 25 20 / 94%);
  --scrollbar: #496c51;
}

:root[data-palette="paper"] {
  color-scheme: light;
  --background: #e8e1d3;
  --text: #302d28;
  --muted: #746c60;
  --line: #c3b9a8;
  --heading: #1f1d1a;
  --link: #496b73;
  --panel: #d9d0bf;
  --hover: #ded6c7;
  --cover: rgb(232 225 211 / 94%);
  --scrollbar: #998f7f;
}

:root[data-palette="nord"] {
  --background: #2e3440;
  --text: #d8dee9;
  --muted: #8192aa;
  --line: #4c566a;
  --heading: #eceff4;
  --link: #88c0d0;
  --panel: #3b4252;
  --hover: #353c4a;
  --cover: rgb(46 52 64 / 94%);
  --scrollbar: #607089;
}

:root[data-palette="solarized"] {
  --background: #002b36;
  --text: #93a1a1;
  --muted: #657b83;
  --line: #164550;
  --heading: #eee8d5;
  --link: #2aa198;
  --panel: #073642;
  --hover: #05333e;
  --cover: rgb(0 43 54 / 94%);
  --scrollbar: #47727a;
}

:root[data-palette="gruvbox"] {
  --background: #282828;
  --text: #ebdbb2;
  --muted: #a89984;
  --line: #504945;
  --heading: #fbf1c7;
  --link: #83a598;
  --panel: #3c3836;
  --hover: #32302f;
  --cover: rgb(40 40 40 / 94%);
  --scrollbar: #665c54;
}

:root[data-palette="plum"] {
  --background: #211924;
  --text: #dacdda;
  --muted: #907c91;
  --line: #4b3b50;
  --heading: #f0e5ef;
  --link: #bda4c8;
  --panel: #302435;
  --hover: #2a202e;
  --cover: rgb(33 25 36 / 94%);
  --scrollbar: #66536c;
}

* {
  box-sizing: border-box;
}

html,
body,
#app {
  width: 100%;
  min-height: 100%;
  margin: 0;
  background: var(--background);
}

body {
  color: var(--text);
  user-select: text;
}

html {
  scrollbar-color: var(--scrollbar) transparent;
  scrollbar-width: thin;
}

#drop-zone {
  position: fixed;
  z-index: 5;
  inset: 0;
  display: grid;
  place-content: center;
  gap: 0.65rem;
  width: 100%;
  border: 0;
  outline: 0;
  color: var(--text);
  background: var(--background);
  cursor: default;
  font: inherit;
  letter-spacing: 0.14em;
}

#drop-zone::before {
  content: "";
  position: absolute;
  inset: 2rem;
  border: 1px dashed var(--line);
  border-radius: 1.25rem;
  transition: border-color 120ms ease, background-color 120ms ease;
}

#drop-zone:is(:hover, :focus-visible)::before,
body.is-dragging #drop-zone::before {
  border-color: var(--muted);
  background: var(--hover);
}

#drop-zone span,
#drop-zone small {
  position: relative;
}

#drop-zone > span:first-child {
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 500;
}

#drop-zone small {
  color: var(--muted);
  font-size: 0.68rem;
}

#drop-zone #last-book {
  max-width: min(38rem, calc(100vw - 6rem));
  margin-top: 1.4rem;
  overflow: hidden;
  font-size: 0.76rem;
  letter-spacing: 0.035em;
  text-overflow: ellipsis;
  text-transform: none;
  white-space: nowrap;
}

#start-hotkeys {
  position: relative;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.72rem 2rem;
  width: min(42rem, calc(100vw - 6rem));
  margin-top: 1.2rem;
  color: var(--muted);
  font-size: 0.72rem;
  letter-spacing: 0.015em;
  line-height: 1.6;
  text-align: left;
}

#start-hotkeys > span {
  min-width: 0;
}

#start-hotkeys kbd {
  padding: 0.12rem 0.34rem;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  color: var(--text);
  background: var(--panel);
  font: inherit;
  font-size: 0.68rem;
  white-space: nowrap;
}

@media (max-width: 620px) {
  #start-hotkeys {
    grid-template-columns: 1fr;
    gap: 0.62rem;
    width: min(24rem, calc(100vw - 5rem));
  }
}

body.is-right-dragging,
body.is-right-dragging * {
  cursor: grabbing !important;
  user-select: none !important;
}

#reader {
  width: 100%;
  min-height: 100vh;
  background: var(--background);
}

#viewer {
  width: min(100%, 56rem);
  min-height: 100vh;
  margin: 0 auto;
  padding: 3rem clamp(1.4rem, 6vw, 4rem) 24vh;
  color: var(--text);
  font-family: var(--reader-font);
  font-size: 20px;
  font-weight: 400;
  letter-spacing: var(--reader-tracking);
  line-height: 1.72;
  user-select: text;
}

#viewer * {
  font-family: inherit !important;
  letter-spacing: inherit !important;
}

#viewer p,
#viewer li,
#viewer blockquote {
  line-height: 1.72 !important;
}

#viewer h1,
#viewer h2,
#viewer h3,
#viewer h4,
#viewer h5,
#viewer h6 {
  color: var(--heading);
  line-height: 1.25 !important;
}

#viewer a {
  color: var(--link);
}

#viewer img,
#viewer svg,
#viewer video {
  max-width: 100% !important;
  height: auto !important;
}

#viewer pre {
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
}

#viewer table {
  max-width: 100%;
  border-collapse: collapse;
}

.book-section {
  display: flow-root;
  margin: 0 0 4rem;
  position: static !important;
  height: auto !important;
  max-height: none !important;
  overflow: visible !important;
  transform: none !important;
}

.book-section :where(div, main, article, section, aside, header, footer, nav) {
  position: static !important;
  inset: auto !important;
  height: auto !important;
  min-height: 0 !important;
  max-height: none !important;
  overflow: visible !important;
  transform: none !important;
  clip: auto !important;
}

#drag-cover {
  position: fixed;
  z-index: 10;
  inset: 1.25rem;
  display: grid;
  place-items: center;
  border: 1px dashed var(--muted);
  border-radius: 1rem;
  color: var(--text);
  background: var(--cover);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  pointer-events: none;
  backdrop-filter: blur(4px);
}

#status {
  position: fixed;
  z-index: 20;
  left: 50%;
  bottom: 2rem;
  max-width: min(34rem, calc(100vw - 4rem));
  padding: 0.7rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--panel);
  font-size: 0.8rem;
  transform: translateX(-50%);
}

[hidden] {
  display: none !important;
}