:root {
  color-scheme: dark;
  --bg: #040404;
  --fg: #f3f2ed;
  --soft: #8b8b8b;
  --line: #111;
  --grain: rgba(255, 255, 255, 0.015);
  --font-sans: 'Space Mono', 'IBM Plex Mono', monospace;
  --font-serif: 'Source Serif 4', 'Cormorant Garamond', serif;
  --reader-width: min(1600px, 98vw);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

.page__grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200' viewBox='0 0 200 200'%3E%3Crect width='200' height='200' fill='black'/%3E%3Cg fill='%23ffffff' fill-opacity='.05'%3E%3Ccircle cx='10' cy='10' r='1'/%3E%3Ccircle cx='60' cy='40' r='1'/%3E%3Ccircle cx='90' cy='100' r='1'/%3E%3Ccircle cx='140' cy='150' r='1'/%3E%3Ccircle cx='190' cy='70' r='1'/%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.4;
  mix-blend-mode: screen;
  z-index: 0;
}

.page {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.page--home {
  display: flex;
  justify-content: center;
}

.page__frame {
  width: min(760px, 100%);
  min-height: 100vh;
  padding: 3.5rem 1.25rem 4rem;
  display: flex;
  flex-direction: column;
}

.masthead {
  text-transform: uppercase;
  letter-spacing: 0.28em;
  text-align: center;
  margin-bottom: 3rem;
}

.masthead__tag {
  font-size: 0.75rem;
  margin: 0;
  color: var(--soft);
}

.masthead h1 {
  margin: 0.75rem 0 0;
  font-size: 1.75rem;
  letter-spacing: 0.3em;
}


.directory {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.directory__top {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.directory__label {
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 0.7rem;
  margin: 0;
  color: var(--soft);
}

.search {
  width: 100%;
  max-width: 360px;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.search__input {
  flex: 1;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  color: var(--fg);
  padding: 0.4rem 0;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.75rem;
}

.search__input:focus {
  outline: none;
  border-bottom-color: var(--fg);
}

.search__clear {
  border: none;
  background: none;
  color: var(--soft);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.65rem;
  cursor: pointer;
  padding: 0;
}

.search__clear:hover {
  color: var(--fg);
}

.directory__body {
  border-top: 1px solid var(--line);
}

.entry-list {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.entry {
  width: 100%;
  padding: 0.9rem 0;
  text-align: center;
  border-bottom: 1px solid var(--line);
}

.entry__meta {
  margin: 0 0 0.35rem;
  font-size: 0.65rem;
  letter-spacing: 0.22em;
  color: var(--soft);
  text-transform: uppercase;
  display: flex;
  justify-content: center;
  gap: 0.35rem;
}

.entry__meta span::after {
  content: '';
}

.entry__title {
  margin: 0;
  font-size: 0.9rem;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.entry__title a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.entry__title a:hover {
  border-color: var(--fg);
}

.entry__file {
  margin: 0.4rem 0 0;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--soft);
}

.empty-state {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-size: 0.7rem;
  color: var(--soft);
}

.page--reader {
  padding: 2.5rem 1rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
}

.reader-header,
.reader-toolbar,
.reader-shell {
  width: var(--reader-width);
}

.reader-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.reader-header__meta h1 {
  margin: 0.2rem 0 0;
  font-size: clamp(1.5rem, 3vw, 2.4rem);
  letter-spacing: 0.18em;
}

.reader-header__file {
  margin: 0.2rem 0 0;
  font-size: 0.7rem;
  color: var(--soft);
}

.reader-header__actions .button {
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.reader-toolbar {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.reader-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.25rem 0.8rem;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
}

.reader-shell {
  min-height: calc(100vh - 100px);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #060606;
}

.reader-frame {
  width: 100%;
  height: calc(100vh - 140px);
  min-height: 80vh;
  border: none;
  background: #050505;
}

#epub-viewer {
  width: 100%;
  height: calc(100vh - 140px);
  min-height: 80vh;
}

.reader-shell:fullscreen {
  width: 100vw;
  height: 100vh;
  border-radius: 0;
}

.reader-shell:fullscreen .reader-frame,
.reader-shell:fullscreen #epub-viewer {
  height: 100%;
  min-height: 100%;
}

.button {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  padding: 0.45rem 1.2rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.65rem;
}

.button:hover {
  border-color: var(--fg);
}

.button--ghost {
  border-color: transparent;
}

.empty-state[data-reader-empty] {
  padding: 3rem 1rem;
}

@media (max-width: 520px) {
  .masthead h1 {
    font-size: 1.2rem;
    letter-spacing: 0.22em;
  }

  .entry__title {
    font-size: 0.75rem;
    letter-spacing: 0.18em;
  }

  .search__input {
    font-size: 0.65rem;
  }

  .page--reader {
    padding: 1.5rem 0.75rem 2rem;
  }

  .reader-header,
  .reader-toolbar,
  .reader-shell {
    width: 100%;
  }

  .reader-frame,
  #epub-viewer {
    height: calc(100vh - 120px);
  }
}

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