html, body {
  min-height: 100dvh;
}

:root {
  --column-height: calc(100vh - calc(var(--vertical-padding) * 2.0));
  --column-height: calc(100svh - calc(var(--vertical-padding) * 2.0));
}

/* Smaller floating chrome around the text */
.toc-button,
.settings-button,
.library-button {
  width: 1.7rem;
  height: 1.7rem;
  min-width: 1.7rem;
  min-height: 1.7rem;
  padding: 0.2rem;
  font-size: 0.75rem;
  line-height: 1;
  border-radius: 999px;
  box-sizing: border-box;
}

.library-button {
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.reader-chrome,
.highlight-toolbar button {
  background: rgba(17, 17, 17, 0.75);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(4px);
}

body:not(.chrome-hidden)::after {
  content: "";
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: calc(var(--base-unit) * 1.35);
  background: rgba(17, 17, 17, 0.65);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
  z-index: 99999;
  pointer-events: none;
}

button.reader-chrome:hover,
a.reader-chrome:hover,
.highlight-toolbar button:hover {
  background: rgba(17, 17, 17, 0.85);
}

.highlight-toolbar button {
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .toc-button,
  .settings-button,
  .library-button {
    width: 1.55rem;
    height: 1.55rem;
    min-width: 1.55rem;
    min-height: 1.55rem;
    padding: 0.18rem;
    font-size: 0.7rem;
  }
}

/* Settings label with inline wrap toggle */
.control-label-inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.inline-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.9rem;
  font-weight: 400;
  white-space: nowrap;
}

.inline-toggle input {
  margin: 0;
}

/* Word wrap toggle behavior */
body.word-wrap-enabled .book,
body.word-wrap-enabled .book p,
body.word-wrap-enabled .book li,
body.word-wrap-enabled .book blockquote,
body.word-wrap-enabled .book h1,
body.word-wrap-enabled .book h2,
body.word-wrap-enabled .book h3,
body.word-wrap-enabled .book h4,
body.word-wrap-enabled .book h5,
body.word-wrap-enabled .book h6,
body.word-wrap-enabled .book td,
body.word-wrap-enabled .book th,
body.word-wrap-enabled .book figcaption {
  overflow-wrap: break-word;
  word-break: normal;
  -webkit-hyphens: auto;
  -ms-hyphens: auto;
  hyphens: auto;
}

body.word-wrap-disabled .book,
body.word-wrap-disabled .book p,
body.word-wrap-disabled .book li,
body.word-wrap-disabled .book blockquote,
body.word-wrap-disabled .book h1,
body.word-wrap-disabled .book h2,
body.word-wrap-disabled .book h3,
body.word-wrap-disabled .book h4,
body.word-wrap-disabled .book h5,
body.word-wrap-disabled .book h6,
body.word-wrap-disabled .book td,
body.word-wrap-disabled .book th,
body.word-wrap-disabled .book figcaption {
  overflow-wrap: normal;
  word-break: normal;
  -webkit-hyphens: manual;
  -ms-hyphens: manual;
  hyphens: manual;
}

/* Auto-hide reader chrome */
.reader-chrome {
  transition: opacity 180ms ease, visibility 180ms ease;
  opacity: 1;
  visibility: visible;
}

body.chrome-hidden .reader-chrome {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  display: none;
}

/* Reduce extra bottom spacing reserved for chrome */
p.last-page::after {
  height: calc(var(--base-unit) * 1.25);
}