/* Reader: themes, typography and chrome. Reader tokens (--r-*) are remapped onto
   the shared tokens so every nested component (buttons, dialogs) follows the theme. */
.reader {
  --r-bg: #fbfaf7;
  --r-fg: #25231f;
  --r-muted: #7a766c;
  --r-surface: #f0eee8;
  --r-border: #e1ddd3;
  --r-accent: #0e7466;
  --r-font: var(--font-serif);
  --r-align: left;
  --r-size: 19px;
  --r-lh: 1.7;
  --r-ls: 0em;
  --r-pad: 32px;
  --bar-top: 3.5rem;
  --bar-bottom: 2.75rem;

  --bg: var(--r-bg);
  --surface: var(--r-bg);
  --surface-2: var(--r-surface);
  --border: var(--r-border);
  --text: var(--r-fg);
  --muted: var(--r-muted);
  --accent: var(--r-accent);
  --accent-hover: var(--r-accent);
  --accent-contrast: var(--r-bg);
  --accent-soft: color-mix(in srgb, var(--r-accent) 16%, var(--r-bg));

  position: fixed;
  inset: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  background: var(--r-bg);
  color: var(--r-fg);
  transition:
    background-color 0.3s,
    color 0.3s;
}
.reader[data-theme="sepia"] {
  --r-bg: #f4ecd8;
  --r-fg: #4a3a2a;
  --r-muted: #8b7a63;
  --r-surface: #eadfc4;
  --r-border: #dccfae;
  --r-accent: #8a5a2b;
}
.reader[data-theme="dark"] {
  --r-bg: #1c1d21;
  --r-fg: #d6d6da;
  --r-muted: #8d8e96;
  --r-surface: #26272c;
  --r-border: #34353b;
  --r-accent: #6fcfb2;
}
.reader[data-theme="oled"] {
  --r-bg: #000;
  --r-fg: #c9c9c9;
  --r-muted: #7a7a7a;
  --r-surface: #0e0e0e;
  --r-border: #222;
  --r-accent: #6fcfb2;
}
.reader[data-font="sans"] {
  --r-font: var(--font-sans);
}
.reader[data-font="serif"] {
  --r-font: var(--font-serif);
}
.reader[data-font="mono"] {
  --r-font: var(--font-mono);
}
.reader[data-align="left"] {
  --r-align: left;
}
.reader[data-align="justify"] {
  --r-align: justify;
}

.reader .dialog::backdrop {
  background: rgb(0 0 0 / 0.2);
  backdrop-filter: none;
}
.reader .btn--primary {
  color: var(--r-bg);
}

/* ----- Chrome ----- */
.reader__bar {
  position: absolute;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-inline: max(0.5rem, env(safe-area-inset-left))
    max(0.5rem, env(safe-area-inset-right));
  background: color-mix(in srgb, var(--r-bg) 90%, transparent);
  backdrop-filter: blur(12px);
  transition:
    transform 0.3s var(--ease),
    opacity 0.3s;
}
.reader__bar--top {
  top: 0;
  min-height: var(--bar-top);
  padding-top: env(safe-area-inset-top);
  border-bottom: 1px solid var(--r-border);
}
.reader__bar--bottom {
  bottom: 0;
  min-height: var(--bar-bottom);
  padding-bottom: env(safe-area-inset-bottom);
  border-top: 1px solid var(--r-border);
  justify-content: center;
}
.reader[data-chrome="hidden"] .reader__bar--top {
  transform: translateY(-100%);
}
.reader[data-chrome="hidden"] .reader__bar--bottom {
  transform: translateY(100%);
}
.reader__heading {
  flex: 1;
  min-width: 0;
  display: grid;
  line-height: 1.25;
}
.reader__book,
.reader__chapter {
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.reader__book {
  font-size: 0.9375rem;
}
.reader__chapter {
  font-size: 0.75rem;
  color: var(--r-muted);
}
.reader__tools {
  display: flex;
  gap: 0.125rem;
}
.reader__status {
  font-size: 0.75rem;
  color: var(--r-muted);
  font-variant-numeric: tabular-nums;
}
.reader__progress {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: var(--r-border);
}
.reader__progress-fill {
  height: 100%;
  width: 0;
  background: var(--r-accent);
  transition: width 0.2s linear;
}

/* ----- Scroll area ----- */
.reader__scroll {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  outline: none;
  -webkit-overflow-scrolling: touch;
  padding-top: calc(var(--bar-top) + 2rem);
  padding-bottom: var(--bar-bottom);
}
.reader[data-loading="true"] .prose {
  opacity: 0.4;
}
.reader__page {
  width: min(100%, 50rem);
  margin-inline: auto;
  padding: 0 min(var(--r-pad), 14vw) 3rem;
}
.reader__chapter-nav {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--r-border);
}

/* ----- Prose: scoped to element selectors so book markup cannot collide with app classes ----- */
.prose {
  font-family: var(--r-font);
  font-size: var(--r-size);
  line-height: var(--r-lh);
  letter-spacing: var(--r-ls);
  text-align: var(--r-align);
  color: var(--r-fg);
  overflow-wrap: break-word;
  transition: opacity 0.2s;
}
.reader[data-align="justify"] .prose {
  hyphens: auto;
  -webkit-hyphens: auto;
}
.prose :is(p, ul, ol, blockquote, pre, figure, table) {
  margin: 1.6em 0 1em;
}
.prose :is(h1, h2, h3, h4, h5, h6) {
  margin: 1.6em 0 0.6em;
  line-height: 1.25;
  text-align: left;
  letter-spacing: 0;
  text-wrap: balance;
}
.prose h1 {
  font-size: 1.7em;
  margin-top: 0.5em;
}
.prose h2 {
  font-size: 1.4em;
}
.prose h3 {
  font-size: 1.2em;
}
.prose :is(ul, ol) {
  padding-left: 1.5em;
  list-style: revert;
}
.prose blockquote {
  padding-left: 1em;
  border-left: 3px solid var(--r-border);
  color: var(--r-muted);
}
.prose img,
.prose svg {
  max-width: 100%;
  height: auto;
  margin-inline: auto;
}
.prose pre {
  overflow-x: auto;
  padding: 0.75em 1em;
  border-radius: 0.5rem;
  background: var(--r-surface);
  font-size: 0.85em;
}
.prose code {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
.prose table {
  display: block;
  max-width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
}
.prose :is(td, th) {
  padding: 0.25em 0.75em;
  border: 1px solid var(--r-border);
}
.prose hr {
  border: 0;
  border-top: 1px solid var(--r-border);
  margin: 2em 0;
}
.prose a {
  color: var(--r-accent);
  text-underline-offset: 3px;
  cursor: pointer;
}
.prose [id] {
  scroll-margin-top: 4.5rem;
}
.prose__error {
  color: var(--r-muted);
  text-align: center;
  padding: 3rem 0;
}