/* Shared reader chrome and device library. Opaque surfaces also work without blur. */
:root {
  --glass-surface: var(--surface);
  --glass-card: var(--surface);
  --glass-control: var(--tint);
  --glass-edge: var(--line);
  --glass-shadow: 0 12px 44px #18304b16;
}

@supports ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  :root {
    --glass-surface: color-mix(in srgb, var(--surface) 87%, transparent);
    --glass-card: color-mix(in srgb, var(--surface) 76%, transparent);
    --glass-control: color-mix(in srgb, var(--tint) 75%, transparent);
    --glass-edge: color-mix(in srgb, var(--line) 65%, transparent);
  }

  .focus-reader .sidebar,
  .top-drawer,
  dialog,
  .pencil-dock,
  .pencil-options-panel,
  .edge-reveal {
    -webkit-backdrop-filter: blur(26px) saturate(145%);
    backdrop-filter: blur(26px) saturate(145%);
  }
}

.focus-reader .sidebar,
.top-drawer,
dialog,
.pencil-dock,
.pencil-options-panel,
.edge-reveal {
  background: var(--glass-surface);
  border-color: var(--glass-edge);
  box-shadow: var(--glass-shadow);
}

dialog::backdrop {
  background: #13294238;
}

.drawer-backdrop {
  background: #13294224;
}

.focus-reader .sidebar {
  padding-top: max(22px, env(safe-area-inset-top));
  padding-bottom: max(22px, env(safe-area-inset-bottom));
}

.sidebar .drawer-heading {
  align-items: flex-start;
  margin-bottom: 22px;
}

.sidebar .drawer-heading > div {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.sidebar .drawer-heading strong {
  display: block;
  font-size: 25px;
  line-height: 1.25;
  letter-spacing: -.6px;
}

.sidebar .build-version {
  display: block;
  margin: 0 !important;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.sidebar .drawer-heading > button {
  flex: none;
  width: 40px;
  min-height: 40px;
  padding: 6px;
  border-radius: 50%;
}

.sidebar .library-entry {
  min-height: 48px;
  border-radius: 13px;
  padding-inline: 16px;
}

.sidebar .recent-list {
  gap: 5px;
  max-height: 244px;
  min-width: 0;
  overflow-x: hidden;
}

.sidebar .recent-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 4px;
  min-height: 64px;
  min-width: 0;
  max-width: 100%;
  padding: 11px 12px;
  background: var(--glass-control);
  border-radius: 12px;
}

.sidebar .recent-name {
  width: 100%;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sidebar .recent-item small {
  display: block;
  font-variant-numeric: tabular-nums;
}

.sidebar .section-label {
  letter-spacing: .3px;
  font-size: 12px;
}

.sidebar .shelf-actions {
  gap: 3px;
}

.sidebar .shelf-actions button {
  padding-inline: 11px;
  border-radius: 10px;
}

.top-drawer .edition-toolbar,
.top-drawer #score-card,
.top-drawer #practice-drawer,
.pdf-outline,
.bookmark-bar,
.midi-bar {
  border-color: var(--glass-edge);
}

.top-drawer .edition-toolbar select,
.top-drawer .view-segments,
.top-drawer #offline-save,
.pencil-tool.selected {
  background: var(--glass-control);
}

/* A library is a full window with two independently scrolling panes. */
dialog.library-dialog {
  position: fixed;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100dvh;
  max-height: none;
  min-height: 0;
  margin: 0;
  padding: max(22px, env(safe-area-inset-top))
    max(26px, env(safe-area-inset-right))
    max(14px, env(safe-area-inset-bottom))
    max(26px, env(safe-area-inset-left));
  border: 0;
  border-radius: 0;
  overflow: hidden;
  scrollbar-gutter: auto;
  color: var(--ink);
}

dialog.library-dialog[open] {
  display: flex;
  flex-direction: column;
}

.library-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: none;
  gap: 24px;
  padding-bottom: 18px;
}

.library-heading {
  flex: 1;
  min-width: 0;
}

.library-dialog .library-heading h2 {
  margin: 0;
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 650;
  line-height: 1.3;
  letter-spacing: -.7px;
}

.library-dialog #library-summary {
  margin: 6px 0 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.library-header-actions {
  display: flex;
  flex: none;
  align-items: center;
  gap: 8px;
}

.library-header-actions > button {
  min-height: 44px;
  padding: 11px 15px;
  border-radius: 12px;
  font-size: 13px;
  white-space: nowrap;
}

.library-header-actions .secondary {
  background: var(--glass-control);
  border-color: transparent;
}

dialog.library-dialog .dialog-close {
  position: static !important;
  flex: none;
  width: 44px;
  min-width: 44px;
  height: 44px;
  margin: 0 0 0 4px;
  padding: 0;
  border: 0;
  background: var(--glass-control);
  box-shadow: none;
}

.library-dialog .library-filters {
  display: flex;
  position: static;
  flex: none;
  align-items: center;
  flex-wrap: nowrap;
  gap: 10px;
  padding: 0 0 18px;
  background: transparent;
}

.library-dialog .library-filters input {
  flex: 1 1 260px;
  width: 100%;
  min-width: 0;
  min-height: 46px;
  padding: 11px 15px;
  border: 1px solid var(--glass-edge);
  border-radius: 13px;
  background: var(--glass-card);
  color: var(--ink);
  font-size: 16px;
}

.library-dialog .library-filters input::placeholder {
  color: var(--muted);
}

.library-dialog .library-filters label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.library-dialog .library-filters select {
  min-width: 0;
  max-width: 180px;
  min-height: 44px;
  padding: 9px 12px;
  border-color: transparent;
  border-radius: 12px;
  background: var(--glass-control);
  color: var(--ink);
}

.library-dialog #library-download-help {
  flex: none;
  margin: -4px 0 14px;
  font-size: 12px;
  line-height: 1.6;
}

.library-dialog #library-download-help:empty {
  display: none;
}

.library-dialog .library-body {
  display: grid;
  flex: 1 1 auto;
  grid-template-columns: clamp(190px, 20vw, 250px) minmax(0, 1fr);
  gap: 0;
  min-height: 0;
  border-top: 1px solid var(--glass-edge);
  overflow: hidden;
}

.library-dialog .library-groups {
  display: flex;
  position: static;
  flex-direction: column;
  align-self: stretch;
  gap: 4px;
  min-width: 0;
  min-height: 0;
  max-height: none;
  margin: 0;
  padding: 16px 14px 20px 0;
  border-right: 1px solid var(--glass-edge);
  overflow: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.library-group,
.library-subgroup {
  display: grid;
  flex: none;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-width: 0;
  min-height: 46px;
  padding: 11px 12px;
  border: 0;
  border-radius: 11px;
  background: transparent;
  color: var(--ink);
  font-size: 14px;
  line-height: 1.45;
  text-align: left;
  touch-action: manipulation;
}

.library-group {
  font-weight: 600;
}

.library-group[aria-expanded] {
  grid-template-columns: minmax(0, 1fr) auto 9px;
}

.library-group[aria-expanded]::after {
  content: '';
  width: 6px;
  height: 6px;
  border: solid currentColor;
  border-width: 0 1.5px 1.5px 0;
  opacity: .5;
  transform: rotate(-45deg);
  transition: transform .16s ease;
}

.library-group[aria-expanded=true]::after {
  transform: rotate(45deg) translateY(-2px);
}

.library-group-name {
  min-width: 0;
  overflow-wrap: anywhere;
}

.library-group-count {
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

.library-group:hover:enabled,
.library-subgroup:hover:enabled {
  background: var(--glass-control);
}

.library-group.selected,
.library-group[aria-current],
.library-subgroup.selected,
.library-subgroup[aria-current] {
  background: var(--lime);
  color: var(--accent);
}

.library-subgroups {
  display: flex;
  flex: none;
  flex-direction: column;
  gap: 3px;
  margin: 0 0 10px 11px;
  padding-left: 9px;
  border-left: 1px solid var(--glass-edge);
}

.library-subgroup {
  min-height: 42px;
  padding: 9px 10px;
  font-size: 13px;
}

.library-dialog .library-content {
  min-width: 0;
  min-height: 0;
  padding: 12px 0 24px 22px;
  overflow: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.library-dialog .library-breadcrumbs {
  gap: 5px;
  min-height: 32px;
  font-size: 12px;
}

.library-dialog .library-breadcrumbs .quiet {
  min-height: 32px;
  padding: 5px 3px;
  font-size: 12px;
}

.library-dialog #library-count {
  position: static;
  margin: 0 0 12px;
  padding: 5px 0;
  background: transparent;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.5;
}

.library-dialog .library-results {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 270px), 1fr));
  align-items: start;
  gap: 12px;
}

.library-dialog .work-card {
  min-width: 0;
  padding: 17px;
  border: 1px solid var(--glass-edge);
  border-radius: 16px;
  background: var(--glass-card);
  box-shadow: 0 2px 12px #17314b05;
}

.library-dialog .work-card h3 {
  margin: 0;
  font-size: 16px;
  line-height: 1.55;
}

.work-title-button {
  display: block;
  width: calc(100% + 16px);
  min-height: 44px;
  margin: -8px -8px 0;
  padding: 8px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-weight: 600;
  line-height: inherit;
  text-align: left;
  overflow-wrap: anywhere;
}

.work-title-button:hover:enabled {
  background: var(--glass-control);
}

.library-dialog .work-card .work-meta {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.library-dialog .work-versions {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
}

.work-versions > summary {
  min-height: 36px;
  padding-block: 6px;
  color: var(--muted);
  font-size: 12px;
}

.library-dialog .work-version {
  margin-top: 9px;
  padding-top: 12px;
  border-color: var(--glass-edge);
}

.library-dialog .work-version > strong {
  font-size: 13px;
  line-height: 1.6;
}

.library-dialog .work-version > p {
  margin: 5px 0 8px;
  font-size: 12px;
}

.library-dialog .work-version button {
  min-height: 44px;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 12px;
}

.library-dialog .work-card .library-open-status {
  margin: 9px 0 0;
  font-size: 12px;
}

.library-dialog button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

body.performance-mode .top-drawer {
  background: #172131f0;
  border-color: #344158;
}

/* The site theme loads after reader assets. Keep its palette and these surfaces. */
html:root body.focus-reader:not(.performance-mode) :is(.sidebar, .top-drawer, .pencil-dock, .pencil-options-panel, .edge-reveal) {
  background: var(--glass-surface);
  border-color: var(--glass-edge);
  box-shadow: var(--glass-shadow);
}

html:root body.focus-reader dialog:is(#performance-dialog, #settings-dialog, #metadata-dialog, #deploy-dialog, #help-dialog, #imslp-dialog) {
  background: var(--glass-surface);
  border-color: var(--glass-edge);
  box-shadow: var(--glass-shadow);
}

html:root body.focus-reader #library-dialog.library-dialog {
  border: 0;
  border-radius: 0;
  background: var(--glass-surface);
  box-shadow: none;
}

html:root body.focus-reader #library-dialog.library-dialog[open] .library-filters input {
  background: var(--glass-card);
  border-color: var(--glass-edge);
}

html:root body.focus-reader #library-dialog.library-dialog[open] .library-filters select {
  background: var(--glass-control);
  border-color: transparent;
}

html:root body.focus-reader #library-dialog #library-count {
  background: transparent;
}

html:root body.focus-reader #library-dialog .work-card {
  background: var(--glass-card);
  border-color: var(--glass-edge);
  border-radius: 16px;
}

@media (max-width: 900px) {
  dialog.library-dialog {
    padding-inline: max(18px, env(safe-area-inset-left)) max(18px, env(safe-area-inset-right));
  }

  .library-header {
    gap: 14px;
  }

  .library-dialog .library-filters {
    flex-wrap: wrap;
  }

  .library-dialog .library-filters input {
    flex-basis: 100%;
  }

  .library-dialog .library-body {
    grid-template-columns: 190px minmax(0, 1fr);
  }

  .library-dialog .library-content {
    padding-left: 16px;
  }
}

@media (max-width: 600px) {
  dialog.library-dialog {
    padding: max(16px, env(safe-area-inset-top))
      max(12px, env(safe-area-inset-right))
      max(10px, env(safe-area-inset-bottom))
      max(12px, env(safe-area-inset-left));
  }

  .library-header {
    position: relative;
    flex-wrap: wrap;
    gap: 14px;
    padding-bottom: 14px;
  }

  .library-heading {
    flex-basis: 100%;
    padding-right: 50px;
  }

  .library-dialog .library-heading h2 {
    font-size: 23px;
  }

  .library-header-actions {
    gap: 8px;
  }

  .library-header-actions > button {
    min-height: 42px;
    padding: 9px 13px;
  }

  dialog.library-dialog .dialog-close {
    position: absolute !important;
    top: 0;
    right: 0;
    margin: 0;
  }

  .library-dialog .library-filters {
    gap: 8px;
    padding-bottom: 14px;
  }

  .library-dialog .library-filters label {
    flex: 1;
    justify-content: space-between;
    gap: 4px;
    font-size: 11px;
  }

  .library-dialog .library-filters select {
    max-width: 100%;
    padding-inline: 8px;
  }

  .library-dialog .library-body {
    grid-template-columns: 116px minmax(0, 1fr);
  }

  .library-dialog .library-groups {
    gap: 3px;
    padding: 12px 8px 18px 0;
  }

  .library-group {
    gap: 5px;
    padding: 10px 7px;
    font-size: 12px;
  }

  .library-group[aria-expanded] {
    grid-template-columns: minmax(0, 1fr) auto 6px;
  }

  .library-group-count {
    font-size: 10px;
  }

  .library-subgroups {
    margin-left: 5px;
    padding-left: 4px;
  }

  .library-subgroup {
    gap: 4px;
    padding: 9px 6px;
    font-size: 12px;
  }

  .library-dialog .library-content {
    padding: 10px 0 20px 10px;
  }

  .library-dialog .library-results {
    grid-template-columns: minmax(0, 1fr);
    gap: 9px;
  }

  html:root body.focus-reader #library-dialog .work-card {
    padding: 13px;
    border-radius: 13px;
  }

  .library-dialog .work-card h3 {
    font-size: 14px;
  }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-surface: var(--surface);
    --glass-card: var(--surface);
    --glass-control: var(--tint);
    --glass-edge: var(--line);
  }

  .focus-reader .sidebar,
  .top-drawer,
  dialog,
  .pencil-dock,
  .pencil-options-panel,
  .edge-reveal {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  body.performance-mode .top-drawer {
    background: #172131;
  }
}

@media (prefers-reduced-motion: reduce) {
  .library-group::after {
    transition: none;
  }
}