/* css/fullview.css */

/* =========================================================
   App View Modes
   ---------------------------------------------------------
   reader: default reading layout
   album : chapter-only sidebar + album workspace
   ========================================================= */

#album-main {
  display: none;
}

body[data-view-mode="reader"] #reader-main,
body:not([data-view-mode]) #reader-main {
  display: block;
}

body[data-view-mode="album"] #reader-main {
  display: none;
}

body[data-view-mode="album"] #album-main {
  display: flex;
}

body[data-view-mode="album"] .right-sidebar {
  display: none;
}

body[data-view-mode="album"] .main-layout {
  grid-template-columns: var(--left-sidebar-width) minmax(0, 1fr);
}

/* =========================================================
   Dictionary View Mode
   ---------------------------------------------------------
   dictionary:
   - keeps the global top bar and bottom bar
   - hides both global sidebars
   - uses the entire main workspace
   ========================================================= */

#dictionary-main {
  display: none;
}

body[data-view-mode="dictionary"] #reader-main,
body[data-view-mode="dictionary"] #album-main {
  display: none;
}

body[data-view-mode="dictionary"] #dictionary-main {
  display: grid;
}

body[data-view-mode="dictionary"] .left-sidebar,
body[data-view-mode="dictionary"] .right-sidebar {
  display: none;
}

body[data-view-mode="dictionary"] .main-layout {
  grid-template-columns: minmax(0, 1fr);
}

/* Sidebar panel switching.
   JS will still toggle hidden/is-active later;
   these rules provide a safe CSS fallback. */

body[data-view-mode="album"] [data-sidebar-panel="reader"] {
  display: none;
}

body[data-view-mode="album"] [data-sidebar-panel="album"] {
  display: block;
}

body[data-view-mode="reader"] [data-sidebar-panel="album"],
body:not([data-view-mode]) [data-sidebar-panel="album"] {
  display: none;
}

/* =========================================================
   Album Main Layout
   ========================================================= */

.album-main {
  min-width: 0;
  min-height: 0;
  height: calc(100dvh - var(--top-bar-height) - var(--bottom-bar-height));
  flex-direction: column;
  overflow: hidden;
  background:
    radial-gradient(
      circle at top left,
      rgba(255, 255, 255, 0.06),
      transparent 32rem
    ),
    var(--color-surface);
}

.album-topbar {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 0.8rem;
  align-items: center;
  padding: 1rem 1.5rem 0.9rem;
  border-bottom: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 92%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.album-tag-bar {
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.album-tag-button {
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.42rem 0.78rem;
  background: var(--color-control-bg);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.84rem;
  line-height: 1;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.album-tag-button:hover {
  transform: translateY(1px);
  border-color: var(--color-text-soft);
  color: var(--color-text);
}

.album-tag-button.is-active,
.album-tag-button[aria-pressed="true"] {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-text) 12%, var(--color-control-bg));
  color: var(--color-text);
}

.album-favorite-summary {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-width: 0;
  white-space: nowrap;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1;
}

.album-favorite-count {
  color: var(--color-text-soft);
  font-variant-numeric: tabular-nums;
}

.album-favorite-filter-button {
  appearance: none;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.42rem 0.72rem;
  background: var(--color-control-bg);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.78rem;
  line-height: 1;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.album-favorite-filter-button:hover {
  transform: translateY(1px);
  border-color: var(--color-text-soft);
  color: var(--color-text);
}

.album-favorite-filter-button.is-active,
.album-favorite-filter-button[aria-pressed="true"] {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-text) 12%, var(--color-control-bg));
  color: var(--color-text);
}

.album-density-control {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.35rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-control-bg);
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1;
  white-space: nowrap;
}

.album-density-label {
  padding-inline: 0.45rem 0.25rem;
  color: var(--color-text-muted);
  font-size: 0.76rem;
}

.album-density-option {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.65rem;
  height: 1.55rem;
  border-radius: 999px;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.album-density-option input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.album-density-option span {
  position: relative;
  z-index: 1;
}

.album-density-option:has(input:checked) {
  background: color-mix(in srgb, var(--color-text) 14%, transparent);
  color: var(--color-text);
}

.album-scroll-area {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  padding: 1.4rem 1.5rem calc(2rem + var(--bottom-bar-height));
}

/* =========================================================
   Album Grid
   ---------------------------------------------------------
   data-album-density:
   2 = large preview grid
   3 = default balanced grid
   4 = compact grid
   5 = dense grid
   ========================================================= */

.album-grid {
  --album-columns: 3;

  display: grid;
  grid-template-columns: repeat(var(--album-columns), minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.album-grid[data-album-density="2"] {
  --album-columns: 2;
}

.album-grid[data-album-density="3"] {
  --album-columns: 3;
}

.album-grid[data-album-density="4"] {
  --album-columns: 4;
}

.album-grid[data-album-density="5"] {
  --album-columns: 5;
}

.album-card {
  position: relative;
  min-width: 0;
  transition:
    transform 180ms ease;
}

.album-card:hover {
  transform: translateY(-2px);
}

.album-card-favorite {
  appearance: none;
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  z-index: 2;
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: color-mix(in srgb, var(--color-control-bg) 86%, transparent);
  color: var(--color-text-muted);
  cursor: pointer;
  line-height: 1;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    opacity 160ms ease;
}

.album-card-favorite:hover {
  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.album-card-favorite.is-favorite,
.album-card-favorite[aria-pressed="true"] {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-text) 14%, var(--color-control-bg));
  color: var(--color-text);
}

.album-favorite-icon {
  display: block;
  width: 1em;
  text-align: center;
  font-family:
    "Segoe UI Symbol",
    "Noto Sans Symbols 2",
    system-ui,
    sans-serif;
  font-size: 1.08rem;
  line-height: 1;
  transform: translateY(-0.02em);
}

.album-card-button {
  width: 100%;
  display: block;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 1rem;
  overflow: hidden;
  background: var(--color-surface-soft);
  color: inherit;
  text-align: left;
  cursor: pointer;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
  transition:
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.album-card:hover .album-card-button {
  border-color: var(--color-text-soft);
  background: color-mix(in srgb, var(--color-surface) 90%, var(--color-text) 10%);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
}

.album-card-button:focus-visible,
.album-card-favorite:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.image-media-frame {
  position: relative;
  overflow: hidden;
  background: color-mix(in srgb, var(--color-surface) 86%, #000 14%);
}

.album-card-media {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.image-media-frame::before {
  content: "";

  position: absolute;
  inset: 0;

  background:
    linear-gradient(
      110deg,
      transparent 22%,
      color-mix(
        in srgb,
        var(--color-text) 5%,
        transparent
      )
      46%,
      transparent 70%
    );

  transform:
    translateX(-100%);

  animation:
    album-media-loading
    1.45s
    ease-in-out
    infinite;

  pointer-events:
    none;
}

.image-media-frame:has(
  img[data-image-state="ready"]
)::before,
.image-media-frame:has(
  img[data-image-state="error"]
)::before {
  display:
    none;
}

.image-media-frame img {
  width: 100%;
  height: 100%;

  display: block;

  object-fit: cover;

  visibility: hidden;

  opacity: 0;

  transition:
    opacity
    220ms
    ease;
}

.image-media-frame img[data-image-state="ready"] {
  visibility: visible;
  opacity: 1;
}

.image-media-frame img[data-image-state="error"] {
  opacity: 0;
}

@keyframes album-media-loading {
  0% {
    transform:
      translateX(-100%);
  }

  58%,
  100% {
    transform:
      translateX(100%);
  }
}

.album-card-body {
  padding: 0.68rem 0.78rem 0.78rem;
}

.album-card-source {
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.35;
}

.album-card-tags {
  margin-top: 0.42rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.32rem;
}

.album-card-tag {
  border-radius: 999px;
  padding: 0.18rem 0.42rem;
  background: color-mix(in srgb, var(--color-control-bg) 78%, transparent);
  color: var(--color-text-muted);
  font-size: 0.72rem;
  line-height: 1.25;
}

/* Empty / loading state */

.album-empty-state {
  max-width: 34rem;
  margin: 5rem auto 0;
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: 1.2rem;
  background: var(--color-surface-soft);
  color: var(--color-text-muted);
  text-align: center;
}

.album-empty-state strong {
  display: block;
  margin-bottom: 0.45rem;
  color: var(--color-text);
  font-size: 1rem;
}

/* =========================================================
   Album Lightbox
   ========================================================= */

body.is-album-lightbox-open {
  overflow: hidden;
}

.album-lightbox[hidden] {
  display: none;
}

.album-lightbox {
  position: fixed;

  top:
    var(--top-bar-height);

  right: 0;
  bottom: 0;
  left: 0;

  z-index:
    var(--z-album-lightbox);

  display: grid;
  place-items: center;

  padding: 2rem;
}

.album-lightbox-backdrop {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(
      circle at center,
      color-mix(in srgb, var(--color-bg) 72%, transparent),
      color-mix(in srgb, var(--color-bg) 92%, #000 8%)
    );
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.album-lightbox-dialog {
  position: relative;
  z-index: 1;
  width:
    min(
      96vw,
      1400px
    );
  height:
    min(
      calc(
        100dvh -
        var(--top-bar-height) -
        4rem
      ),
      920px
    );
  display: grid;
  grid-template-rows: minmax(0, 1fr) auto;
  border: 1px solid var(--color-border);
  border-radius: 1.2rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--color-surface) 94%, transparent);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
}

.album-lightbox-image-wrap {
  min-width: 0;
  min-height: 0;
  display: grid;
  place-items: center;
  padding: 3.4rem 4.5rem 1.2rem;
  background:
    radial-gradient(
      circle at center,
      color-mix(in srgb, var(--color-surface-soft) 88%, transparent),
      color-mix(in srgb, var(--color-bg) 92%, #000 8%)
    );
}

.album-lightbox-image {
  max-width: 100%;
  max-height: 100%;

  display: block;

  object-fit: contain;

  border-radius: 0.45rem;

  box-shadow:
    0 18px 54px
    rgba(0, 0, 0, 0.34);

  opacity: 0;

  transition:
    opacity
    220ms
    ease;
}

.album-lightbox-image[data-image-state="ready"] {
  opacity: 1;
}

.album-lightbox-image[data-image-state="loading"],
.album-lightbox-image[data-image-state="error"] {
  opacity: 0;
}

.album-lightbox-close,
.album-lightbox-nav {
  appearance: none;
  position: absolute;
  z-index: 2;
  border: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-control-bg) 86%, transparent);
  color: var(--color-text);
  font: inherit;
  cursor: pointer;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease,
    opacity 160ms ease,
    transform 160ms ease;
}

.album-lightbox-close:hover,
.album-lightbox-nav:hover {
  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
}

.album-lightbox-close:focus-visible,
.album-lightbox-nav:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.album-lightbox-close {
  top: 1rem;
  right: 1rem;
  width: 2.25rem;
  height: 2.25rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 1.35rem;
  line-height: 1;
}

.album-lightbox-nav {
  top: 50%;
  width: 2.75rem;
  height: 4.4rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  font-size: 2.4rem;
  line-height: 1;
  transform: translateY(-50%);
}

.album-lightbox-prev {
  left: 1rem;
}

.album-lightbox-next {
  right: 1rem;
}

.album-lightbox-nav.is-disabled,
.album-lightbox-nav:disabled {
  opacity: 0.28;
  cursor: default;
  transform: translateY(-50%);
}

.album-lightbox-nav.is-disabled:hover,
.album-lightbox-nav:disabled:hover {
  border-color: var(--color-border);
  background: color-mix(in srgb, var(--color-control-bg) 86%, transparent);
}

.album-lightbox-footer {
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, auto) minmax(0, 1fr) auto auto;
  gap: 0.8rem;
  align-items: center;
  padding: 0.85rem 1rem;
  border-top: 1px solid var(--color-border);
  background: color-mix(in srgb, var(--color-surface) 96%, transparent);
}

.album-lightbox-source {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.35;
  white-space: nowrap;
}

.album-lightbox-tags {
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
}

.album-lightbox-favorite {
  appearance: none;
  min-width: 5.4rem;
  height: 2rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.38rem;
  padding: 0 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: var(--color-control-bg);
  color: var(--color-text-muted);
  font: inherit;
  font-size: 0.8rem;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.album-lightbox-favorite:hover {
  transform: translateY(1px);
  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.album-lightbox-favorite.is-favorite,
.album-lightbox-favorite[aria-pressed="true"] {
  border-color: var(--color-text);
  background: color-mix(in srgb, var(--color-text) 12%, var(--color-control-bg));
  color: var(--color-text);
}

.album-lightbox-favorite:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

.album-lightbox-favorite .album-favorite-icon {
  font-size: 1rem;
}

.album-lightbox-favorite-label {
  font-size: 0.78rem;
}

.album-lightbox-counter {
  color: var(--color-text-soft);
  font-size: 0.78rem;
  line-height: 1.35;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* Lightbox uses the same tag pill style as album cards. */

.album-lightbox-tags .album-card-tag {
  background: color-mix(in srgb, var(--color-control-bg) 86%, transparent);
}

/* =========================================================
   Album Chapter Nav
   ========================================================= */

.album-chapter-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.album-mobile-chapter-nav {
  display: none;
}

.album-chapter-nav-item {
  width: 100%;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  color: var(--color-text-muted);
  text-align: left;
  font: inherit;
  cursor: pointer;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    color 160ms ease;
}

.album-chapter-nav-item:hover {
  background: var(--color-surface-soft);
  color: var(--color-text);
}

.album-chapter-nav-item.is-active,
.album-chapter-nav-item[aria-current="true"] {
  border-color: var(--color-border);
  background: var(--color-surface-soft);
  color: var(--color-text);
}

.album-chapter-number {
  color: var(--color-text-soft);
  font-size: 13px;
  line-height: 1.4;
  text-align: center;
}

.album-chapter-title {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 14px;
  line-height: 1.4;
}

.album-chapter-count {
  color: var(--color-text-soft);
  font-size: 12px;
  line-height: 1.4;
  font-variant-numeric: tabular-nums;
}

/* =========================================================
   Dictionary Full View
   ========================================================= */

.dictionary-main {
  min-width: 0;
  min-height: 0;
  height: calc(
    100dvh
    - var(--top-bar-height)
    - var(--bottom-bar-height)
  );

  grid-template-rows:
    auto
    minmax(0, 1fr)
    auto;

  overflow: hidden;
  background:
    radial-gradient(
      circle at top right,
      rgba(255, 255, 255, 0.045),
      transparent 34rem
    ),
    var(--color-surface);
}

/* JS 与 HTML 的 hidden 状态始终优先。 */

.dictionary-book-view[hidden],
.dictionary-search-suggestions[hidden],
.dictionary-search-clear[hidden],
.translation-alphabet-nav[hidden] {
  display: none;
}

/* Local Dictionary Top Bar */

.dictionary-topbar {
  position: relative;
  z-index: 5;

  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 26rem);
  gap: 1.25rem;
  align-items: center;

  padding: 0.95rem 1.5rem;

  border-bottom: 1px solid var(--color-border);
  background:
    color-mix(
      in srgb,
      var(--color-surface) 94%,
      transparent
    );

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

/* Dictionary Book Navigation */

.dictionary-book-nav {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.dictionary-book-button {
  appearance: none;

  min-width: 6.5rem;
  padding: 0.52rem 0.92rem;

  border: 1px solid transparent;
  border-radius: 999px;

  background: transparent;
  color: var(--color-text-muted);

  font: inherit;
  font-size: 0.86rem;
  line-height: 1;

  cursor: pointer;

  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.dictionary-book-button:hover {
  transform: translateY(1px);
  border-color: var(--color-border);
  background: var(--color-control-bg);
  color: var(--color-text);
}

.dictionary-book-button.is-active,
.dictionary-book-button[aria-selected="true"] {
  border-color: var(--color-text-soft);
  background:
    color-mix(
      in srgb,
      var(--color-text) 10%,
      var(--color-control-bg)
    );
  color: var(--color-text);
}

.dictionary-book-button:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 3px;
}

/* Dictionary Search */

.dictionary-search-shell {
  position: relative;
  min-width: 0;
}

.dictionary-search-input {
  appearance: none;

  width: 100%;
  height: 2.35rem;

  padding:
    0
    2.65rem
    0
    0.9rem;

  border: 1px solid var(--color-border);
  border-radius: 999px;

  background: var(--color-control-bg);
  color: var(--color-text);

  font: inherit;
  font-size: 0.86rem;
  line-height: 1;

  outline: none;

  transition:
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.dictionary-search-input::placeholder {
  color: var(--color-text-soft);
}

.dictionary-search-input:hover {
  border-color: var(--color-text-soft);
}

.dictionary-search-input:focus {
  border-color: var(--color-text-muted);
  background: var(--color-control-bg-strong);

  box-shadow:
    0 0 0 3px
    color-mix(
      in srgb,
      var(--color-text) 8%,
      transparent
    );
}

.dictionary-search-input::-webkit-search-cancel-button,
.dictionary-search-input::-webkit-search-decoration {
  appearance: none;
  -webkit-appearance: none;
}

.dictionary-search-clear {
  appearance: none;
  position: absolute;

  top: 50%;
  right: 0.42rem;
  z-index: 2;

  width: 1.65rem;
  height: 1.65rem;

  display: grid;
  place-items: center;

  padding: 0;
  transform: translateY(-50%);

  border: none;
  border-radius: 999px;

  background: transparent;
  color: var(--color-text-soft);

  font: inherit;
  font-size: 1.05rem;
  line-height: 1;

  cursor: pointer;
}

.dictionary-search-clear:hover {
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.dictionary-search-clear:focus-visible {
  outline: 1px solid var(--color-text-soft);
  outline-offset: 2px;
}

/* Search Candidate List
   This is part of the fullview dictionary interface,
   not a footer popover. */

.dictionary-search-suggestions {
  position: absolute;

  top: calc(100% + 0.5rem);
  left: 0;
  right: 0;
  z-index: 20;

  max-height: min(22rem, 46dvh);
  overflow-y: auto;

  padding: 0.4rem;

  border: 1px solid var(--color-border);
  border-radius: 1rem;

  background:
    color-mix(
      in srgb,
      var(--color-surface) 96%,
      transparent
    );

  box-shadow: var(--color-popover-shadow);

  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.dictionary-search-suggestion {
  appearance: none;

  width: 100%;
  min-width: 0;

  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(0, 1fr);
  gap: 0.8rem;
  align-items: baseline;

  padding: 0.72rem 0.78rem;

  border: 1px solid transparent;
  border-radius: 0.75rem;

  background: transparent;
  color: var(--color-text-muted);

  font: inherit;
  text-align: left;

  cursor: pointer;
}

.dictionary-search-suggestion:hover,
.dictionary-search-suggestion.is-active {
  border-color: var(--color-border);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.dictionary-search-suggestion-primary,
.dictionary-search-suggestion-secondary {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dictionary-search-suggestion-primary {
  color: var(--color-text);
  font-size: 0.85rem;
}

.dictionary-search-suggestion-secondary {
  color: var(--color-text-soft);
  font-size: 0.78rem;
}

/* Dictionary Book Views */

.dictionary-book-view {
  min-width: 0;
  min-height: 0;
  overflow: hidden;
}

/* Shared Empty State */

.dictionary-empty-state {
  max-width: 34rem;
  margin: 5rem auto 0;
  padding: 2rem;

  border: 1px solid var(--color-border);
  border-radius: 1.2rem;

  background: var(--color-surface-soft);
  color: var(--color-text-muted);

  text-align: center;
  line-height: 1.7;
}

/* Local visually hidden helper.
   It remains scoped to dictionary-main. */

.dictionary-main .visually-hidden {
  position: absolute !important;

  width: 1px !important;
  height: 1px !important;

  padding: 0 !important;
  margin: -1px !important;

  overflow: hidden !important;

  clip: rect(0, 0, 0, 0) !important;
  clip-path: inset(50%) !important;

  white-space: nowrap !important;
  border: 0 !important;
}

/* =========================================================
   Term Dictionary
   ---------------------------------------------------------
   Canvas-based source-domain hierarchy
   + selected domain / term information panel
   ========================================================= */

.term-dictionary-view {
  min-width: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;

  /* 默认主题是 dark mode */
  --term-canvas-root-color: #e8e0d4;
  --term-canvas-label-color: #f2ece3;
  --term-canvas-expanded-marker-color: #f2ece3;
  --term-canvas-collapsed-marker-color: #7d756d;
}

.term-dictionary-small-screen-notice {
  display: none;
}

.term-dictionary-view.is-unavailable {
  overflow: hidden;
}

.term-dictionary-view.is-unavailable
.term-dictionary-small-screen-notice {
  height: 100%;
  display: grid;
  place-content: center;
  gap: 0.55rem;
  padding: 2rem;
  text-align: center;
}

.term-dictionary-small-screen-notice strong {
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 550;
  line-height: 1.5;
}

.term-dictionary-small-screen-notice span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1.65;
}

html[data-theme="light"] .term-dictionary-view {
  --term-canvas-root-color: #4d463d;
  --term-canvas-label-color: #3f392f;
  --term-canvas-expanded-marker-color: #5c554b;
  --term-canvas-collapsed-marker-color: #8d8579;
}

/* Main two-column workspace */

.term-dictionary-workspace {
  min-width: 0;
  min-height: 0;
  height: 100%;

  display: grid;
  grid-template-columns:
    minmax(0, 3fr)
    minmax(22rem, 2fr);

  gap: 0;

  overflow: hidden;
}

/* =========================================================
   Domain Canvas Panel
   ========================================================= */

.term-domain-panel {
  min-width: 0;
  min-height: 0;

  display: grid;
  grid-template-rows:
    auto
    minmax(0, 1fr);

  overflow: hidden;

  border-right: 1px solid var(--color-border);

  background:
    radial-gradient(
      circle at 24% 16%,
      color-mix(
        in srgb,
        var(--color-text) 4%,
        transparent
      ),
      transparent 34rem
    ),
    radial-gradient(
      circle at 82% 76%,
      color-mix(
        in srgb,
        var(--color-text-muted) 5%,
        transparent
      ),
      transparent 38rem
    ),
    color-mix(
      in srgb,
      var(--color-bg) 68%,
      var(--color-surface)
    );
}

/* Canvas-local toolbar */

.term-domain-toolbar {
  position: relative;
  z-index: 4;

  min-width: 0;

  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    auto;

  gap: 1rem;
  align-items: center;

  padding: 0.85rem 1.1rem;

  border-bottom: 1px solid var(--color-border);

  background:
    color-mix(
      in srgb,
      var(--color-surface) 90%,
      transparent
    );

  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.term-domain-heading {
  min-width: 0;
}

.term-domain-eyebrow,
.term-info-eyebrow {
  display: block;

  color: var(--color-text-soft);

  font-size: 0.66rem;
  font-weight: 650;
  line-height: 1.2;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.term-active-path {
  min-width: 0;
  max-width: 100%;

  margin: 0.3rem 0 0;

  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

  color: var(--color-text-muted);

  font-size: 0.79rem;
  line-height: 1.4;
}

.term-domain-controls {
  flex: 0 0 auto;

  display: flex;
  align-items: center;
  gap: 0.42rem;
}

.term-control-button,
.term-zoom-button {
  appearance: none;

  border: 1px solid var(--color-border);
  background: var(--color-control-bg);
  color: var(--color-text-muted);

  font: inherit;
  line-height: 1;

  cursor: pointer;

  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.term-control-button {
  min-height: 2rem;
  padding: 0.48rem 0.72rem;

  border-radius: 999px;

  font-size: 0.74rem;
  white-space: nowrap;
}

.term-control-button:hover,
.term-zoom-button:hover {
  transform: translateY(-1px);

  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.term-control-button:active,
.term-zoom-button:active {
  transform: translateY(0);
}

.term-control-button:focus-visible,
.term-zoom-button:focus-visible,
.term-entry-tab:focus-visible,
.term-domain-chip-button:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

.term-control-button:disabled,
.term-zoom-button:disabled {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

/* =========================================================
   Canvas Viewport
   ========================================================= */

.term-canvas-shell {
  position: relative;

  min-width: 0;
  min-height: 0;

  overflow: hidden;

  /*
   * The Canvas service measures this element, so it must own
   * a real flex/grid-constrained width and height.
   */
  isolation: isolate;
}

.term-domain-canvas {
  position: absolute;
  inset: 0;

  display: block;

  width: 100%;
  height: 100%;

  border: 0;
  outline: none;

  font-family: inherit;

  cursor: grab;
  touch-action: none;
  user-select: none;
}

.term-domain-canvas.dragging {
  cursor: grabbing;
}

/* Canvas tooltip */

.term-canvas-tooltip {
  position: absolute;
  z-index: 8;

  max-width: min(19rem, calc(100% - 2rem));

  padding: 0.62rem 0.72rem;

  transform:
    translate(
      -50%,
      calc(-100% - 0.7rem)
    );

  pointer-events: none;

  border: 1px solid var(--color-border);
  border-radius: 0.7rem;

  background:
    color-mix(
      in srgb,
      var(--color-surface) 96%,
      transparent
    );

  color: var(--color-text);

  box-shadow: var(--color-popover-shadow);

  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.term-canvas-tooltip[hidden] {
  display: none;
}

.term-tooltip-path {
  margin-bottom: 0.24rem;

  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

  color: var(--color-text-soft);

  font-size: 0.66rem;
  line-height: 1.35;
}

.term-tooltip-name {
  color: var(--color-text);

  font-size: 0.84rem;
  font-weight: 650;
  line-height: 1.35;
}

.term-tooltip-meta {
  margin-top: 0.24rem;

  color: var(--color-text-muted);

  font-size: 0.68rem;
  line-height: 1.45;
}

/* Zoom controls */

.term-zoom-controls {
  position: absolute;
  right: 0.9rem;
  bottom: 0.9rem;
  z-index: 6;

  display: flex;
  flex-direction: column;
  gap: 0.36rem;
}

.term-zoom-button {
  width: 2.15rem;
  height: 2.15rem;

  display: grid;
  place-items: center;

  padding: 0;

  border-radius: 0.68rem;

  font-size: 1rem;
}

/* Loading / status message */

.term-canvas-status {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;

  max-width: min(30rem, calc(100% - 4rem));

  margin: 0;
  padding: 0.75rem 1rem;

  transform: translate(-50%, -50%);

  border: 1px solid var(--color-border);
  border-radius: 999px;

  background:
    color-mix(
      in srgb,
      var(--color-surface) 90%,
      transparent
    );

  color: var(--color-text-muted);

  font-size: 0.78rem;
  line-height: 1.4;
  text-align: center;

  pointer-events: none;

  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.term-canvas-status[hidden] {
  display: none;
}

/* =========================================================
   Domain / Term Information Panel
   ========================================================= */

.term-info-panel {
  min-width: 0;
  min-height: 0;

  display: grid;
  grid-template-rows:
    auto
    auto
    minmax(0, 1fr);

  overflow: hidden;

  background:
    color-mix(
      in srgb,
      var(--color-surface) 94%,
      var(--color-bg)
    );
}

.term-info-header {
  min-width: 0;

  display: grid;
  grid-template-columns:
    minmax(0, 1fr)
    minmax(8rem, auto);

  gap: 1rem;
  align-items: end;

  padding: 1.15rem 1.25rem 1rem;

  border-bottom: 1px solid var(--color-border);
}

.term-domain-title {
  min-width: 0;

  margin: 0.3rem 0 0;

  overflow-wrap: anywhere;

  color: var(--color-text);

  font-size: clamp(1.18rem, 1.65vw, 1.55rem);
  font-weight: 650;
  line-height: 1.25;
}

.term-domain-meta {
  max-width: 14rem;

  margin: 0;

  color: var(--color-text-soft);

  font-size: 0.7rem;
  line-height: 1.5;
  text-align: right;
}

/* Terms directly connected to the selected domain */

.term-entry-tabs {
  min-width: 0;
  min-height: 3.4rem;
  max-height: 8.2rem;

  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.42rem;

  overflow-y: auto;

  padding: 0.75rem 1.25rem;

  border-bottom: 1px solid var(--color-border);
}

.term-entry-tab {
  appearance: none;

  max-width: 100%;
  min-height: 1.9rem;

  padding: 0.42rem 0.72rem;

  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;

  border: 1px solid var(--color-border);
  border-radius: 999px;

  background: var(--color-control-bg);
  color: var(--color-text-muted);

  font: inherit;
  font-size: 0.73rem;
  line-height: 1;

  cursor: pointer;

  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.term-entry-tab:hover {
  transform: translateY(-1px);

  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.term-entry-tab.is-active,
.term-entry-tab[aria-selected="true"] {
  border-color:
    color-mix(
      in srgb,
      var(--color-text) 52%,
      var(--color-border)
    );

  background:
    color-mix(
      in srgb,
      var(--color-text) 11%,
      var(--color-control-bg)
    );

  color: var(--color-text);
}

/* Scrollable term detail */

.term-entry-content {
  min-width: 0;
  min-height: 0;

  overflow-y: auto;
  overscroll-behavior: contain;

  padding: 1.3rem 1.25rem 2rem;
}

.term-entry-title {
  margin: 0 0 1.35rem;

  overflow-wrap: anywhere;

  color: var(--color-text);

  font-size: clamp(1.55rem, 2.3vw, 2.15rem);
  font-weight: 650;
  line-height: 1.2;
}

.term-entry-section + .term-entry-section {
  margin-top: 1.35rem;
}

.term-entry-section-title {
  margin: 0 0 0.55rem;

  color:
    color-mix(
      in srgb,
      var(--color-text-muted) 88%,
      var(--color-text)
    );

  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.1em;
}

.term-origin-meaning {
  color: var(--color-text-muted);

  font-size: 0.91rem;
  line-height: 1.78;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

/* Domain, aliases and chapter chips */

.term-chip-list {
  min-width: 0;

  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
}

.term-chip,
.term-domain-chip-button {
  display: inline-flex;
  align-items: center;

  min-height: 1.75rem;
  max-width: 100%;

  padding: 0.38rem 0.62rem;

  overflow-wrap: anywhere;

  border: 1px solid var(--color-border);
  border-radius: 0.48rem;

  background:
    color-mix(
      in srgb,
      var(--color-control-bg) 90%,
      transparent
    );

  color: var(--color-text-muted);

  font: inherit;
  font-size: 0.7rem;
  line-height: 1.3;
}

.term-domain-chip-button {
  appearance: none;
  cursor: pointer;

  transition:
    border-color 160ms ease,
    background 160ms ease,
    color 160ms ease,
    transform 160ms ease;
}

.term-domain-chip-button:hover {
  transform: translateY(-1px);

  border-color: var(--color-text-soft);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.term-domain-jump-note {
  min-height: 1.1rem;

  margin: 0.55rem 0 0;

  color: var(--color-text-soft);

  font-size: 0.69rem;
  line-height: 1.45;
}

.term-empty-state {
  width: 100%;

  align-self: center;

  color: var(--color-text-soft);

  font-size: 0.75rem;
  line-height: 1.5;
}

/* =========================================================
   Term Dictionary Responsive Layout
   ---------------------------------------------------------
   Primarily protects smaller desktop / Electron windows.
   ========================================================= */

@media (max-width: 1120px) {
  .term-dictionary-workspace {
    grid-template-columns:
      minmax(0, 1.55fr)
      minmax(20rem, 1fr);
  }

  .term-domain-toolbar {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.65rem;
  }

  .term-domain-controls {
    justify-content: flex-start;
  }

  .term-info-header {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.55rem;
  }

  .term-domain-meta {
    max-width: none;
    text-align: left;
  }
}

@media (max-width: 820px) {
  .term-dictionary-view {
    overflow-y: auto;
  }

  .term-dictionary-workspace {
    height: auto;
    min-height: 100%;

    grid-template-columns: minmax(0, 1fr);
    grid-template-rows:
      minmax(28rem, 58dvh)
      minmax(28rem, auto);

    overflow: visible;
  }

  .term-domain-panel {
    border-right: 0;
    border-bottom: 1px solid var(--color-border);
  }

  .term-info-panel {
    min-height: 28rem;
  }

  .term-entry-content {
    max-height: none;
  }
}

/* =========================================================
   Translation Dictionary
   ========================================================= */

.translation-dictionary-view {
  min-width: 0;
  min-height: 0;

  display: flex;
  flex-direction: column;

  overflow-y: auto;
  overscroll-behavior-y: contain;

  padding:
    1.6rem
    max(1.5rem, calc((100vw - 1120px) / 2))
    2.2rem;
}

/* Current Letter Header */

.translation-page-header {
  flex: 0 0 auto;
  margin-bottom: 1.15rem;
}

.translation-page-heading {
  display: flex;
  align-items: center;
  gap: 1rem;

  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.translation-page-letter {
  flex: 0 0 auto;

  min-width: 3.4rem;

  color: var(--color-text);

  font-family: var(--font-latin);
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.04em;
}

.translation-page-meta {
  min-width: 0;
}

.translation-page-title {
  margin: 0;

  color: var(--color-text);
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.35;
}

.translation-page-count {
  margin: 0.26rem 0 0;

  color: var(--color-text-soft);
  font-size: 0.78rem;
  line-height: 1.35;
  font-variant-numeric: tabular-nums;
}

/* Translation Entry List */

.translation-column-header {
  display: grid;
  grid-template-columns:
    minmax(11rem, 0.9fr)
    minmax(15rem, 1.35fr)
    minmax(4.5rem, auto);
  gap: 1.25rem;
  align-items: center;

  padding: 0 0.75rem 0.55rem;

  color: var(--color-text-soft);

  font-size: 0.72rem;
  line-height: 1.4;
  letter-spacing: 0.06em;
}

.translation-column-title {
  min-width: 0;
}

.translation-column-title-chapters {
  justify-self: end;
  white-space: nowrap;
}

.translation-entry-list {
  flex: 0 0 auto;
  min-width: 0;

  display: flex;
  flex-direction: column;
}

.translation-entry {
  min-width: 0;

  border-bottom: 1px solid
    color-mix(
      in srgb,
      var(--color-border) 74%,
      transparent
    );

  scroll-margin-block:
    calc(var(--top-bar-height) + 6rem)
    calc(var(--bottom-bar-height) + 5rem);
}

.translation-entry:first-child {
  border-top: 1px solid
    color-mix(
      in srgb,
      var(--color-border) 74%,
      transparent
    );
}

/* Main clickable entry row */

.translation-entry-button {
  appearance: none;

  width: 100%;
  min-width: 0;

  display: grid;
  grid-template-columns:
    minmax(11rem, 0.9fr)
    minmax(15rem, 1.35fr)
    minmax(4.5rem, auto);
  gap: 1.25rem;
  align-items: baseline;

  padding: 0.9rem 0.75rem;

  border: none;
  border-radius: 0.35rem;

  background: transparent;
  color: inherit;

  font: inherit;
  text-align: left;

  cursor: pointer;

  transition:
    background 150ms ease,
    color 150ms ease;
}

.translation-entry-button:hover {
  background:
    color-mix(
      in srgb,
      var(--color-control-bg-hover) 72%,
      transparent
    );
}

.translation-entry.is-expanded .translation-entry-button {
  background:
    color-mix(
      in srgb,
      var(--color-control-bg-active) 78%,
      transparent
    );
}

.translation-entry-button:focus-visible {
  outline: 1px solid var(--color-text-soft);
  outline-offset: -1px;
}

/* Entry columns */

.translation-entry-text,
.translation-entry-translation,
.translation-entry-chapters {
  min-width: 0;
}

.translation-entry-text {
  color: var(--color-text);

  font-family: var(--font-latin), var(--font-ui-cjk), sans-serif;
  font-size: 0.94rem;
  font-weight: 500;
  line-height: 1.5;

  overflow-wrap: anywhere;
}

.translation-entry-translation {
  color: var(--color-text-muted);

  font-size: 0.9rem;
  line-height: 1.55;

  overflow-wrap: anywhere;
}

.translation-entry-chapters {
  justify-self: end;

  color: var(--color-text-soft);

  font-size: 0.72rem;
  line-height: 1.4;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* Expanded Entry Body */

.translation-entry-detail {
  padding:
    0.2rem
    0.75rem
    1.15rem;

  color: var(--color-text-muted);
}

.translation-entry-detail[hidden] {
  display: none;
}

.translation-entry-explanation {
  max-width: 58rem;
  margin: 0;

  color: var(--color-text-muted);

  font-size: 0.87rem;
  line-height: 1.75;
}

.translation-entry-aliases {
  max-width: 58rem;

  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;

  margin-top: 0.8rem;
}

.translation-entry-alias-label {
  margin-right: 0.15rem;

  color: var(--color-text-soft);

  font-size: 0.72rem;
  line-height: 1.65;
}

.translation-entry-alias {
  display: inline-flex;
  align-items: center;

  min-height: 1.55rem;
  padding: 0.2rem 0.52rem;

  border: 1px solid var(--color-border);
  border-radius: 999px;

  background:
    color-mix(
      in srgb,
      var(--color-control-bg) 74%,
      transparent
    );

  color: var(--color-text-muted);

  font-size: 0.72rem;
  line-height: 1.25;
}

/* Search Target Highlight */

.translation-entry.is-search-target {
  animation:
    translation-entry-search-target
    1500ms
    ease;
}

@keyframes translation-entry-search-target {
  0% {
    background:
      color-mix(
        in srgb,
        var(--color-assist-translation) 34%,
        transparent
      );
  }

  100% {
    background: transparent;
  }
}

/* =========================================================
   Translation Alphabet Navigation
   ========================================================= */

.translation-alphabet-nav {
  position: relative;
  z-index: 6;

  min-width: 0;

  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.16rem;

  padding: 0.62rem 1.1rem;

  border-top: 1px solid var(--color-border);

  background:
    color-mix(
      in srgb,
      var(--color-surface) 95%,
      transparent
    );

  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);

  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.translation-alphabet-nav::-webkit-scrollbar {
  display: none;
}

.translation-alphabet-button {
  appearance: none;

  flex: 0 0 auto;

  width: 1.82rem;
  height: 1.82rem;

  display: grid;
  place-items: center;

  padding: 0;

  border: 1px solid transparent;
  border-radius: 999px;

  background: transparent;
  color: var(--color-text-soft);

  font-family: var(--font-latin);
  font-size: 0.78rem;
  line-height: 1;

  cursor: pointer;

  transition:
    border-color 150ms ease,
    background 150ms ease,
    color 150ms ease,
    transform 150ms ease;
}

.translation-alphabet-button:hover {
  transform: translateY(1px);
  border-color: var(--color-border);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.translation-alphabet-button.is-active,
.translation-alphabet-button[aria-current="page"],
.translation-alphabet-button[aria-pressed="true"] {
  border-color: var(--color-text-soft);

  background:
    color-mix(
      in srgb,
      var(--color-text) 12%,
      var(--color-control-bg)
    );

  color: var(--color-text);
}

.translation-alphabet-button:disabled,
.translation-alphabet-button.is-disabled {
  opacity: 0.24;
  cursor: default;
}

.translation-alphabet-button:disabled:hover,
.translation-alphabet-button.is-disabled:hover {
  transform: none;
  border-color: transparent;
  background: transparent;
  color: var(--color-text-soft);
}

.translation-alphabet-button:focus-visible {
  outline: 1px solid var(--color-text-soft);
  outline-offset: 2px;
}

/* =========================================================
   Annotation Dictionary
   ========================================================= */

.annotation-dictionary-view {
  min-width: 0;
  min-height: 0;

  display: flex;
  flex-direction: column;

  overflow: hidden;
}

/* =========================================================
   Annotation Local Toolbar
   ========================================================= */

.annotation-toolbar {
  position: relative;
  z-index: 4;

  flex: 0 0 auto;

  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1rem;
  align-items: center;

  padding: 0.8rem 1.5rem;

  border-bottom: 1px solid var(--color-border);

  background:
    color-mix(
      in srgb,
      var(--color-surface) 94%,
      transparent
    );

  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* Chapter Navigation */

.annotation-chapter-nav {
  min-width: 0;

  display: flex;
  align-items: center;
  gap: 0.35rem;

  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.annotation-chapter-nav::-webkit-scrollbar {
  display: none;
}

.annotation-chapter-button {
  appearance: none;

  flex: 0 0 auto;

  min-width: 2.2rem;
  height: 2rem;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 0 0.72rem;

  border: 1px solid transparent;
  border-radius: 999px;

  background: transparent;
  color: var(--color-text-soft);

  font: inherit;
  font-size: 0.8rem;
  line-height: 1;
  white-space: nowrap;

  cursor: pointer;

  transition:
    border-color 150ms ease,
    background 150ms ease,
    color 150ms ease,
    transform 150ms ease;
}

.annotation-chapter-button:hover {
  transform: translateY(1px);

  border-color: var(--color-border);
  background: var(--color-control-bg-hover);
  color: var(--color-text);
}

.annotation-chapter-button.is-active,
.annotation-chapter-button[aria-pressed="true"],
.annotation-chapter-button[aria-current="page"] {
  border-color: var(--color-text-soft);

  background:
    color-mix(
      in srgb,
      var(--color-text) 12%,
      var(--color-control-bg)
    );

  color: var(--color-text);
}

.annotation-chapter-button:disabled,
.annotation-chapter-button.is-disabled {
  opacity: 0.28;
  cursor: default;
}

.annotation-chapter-button:disabled:hover,
.annotation-chapter-button.is-disabled:hover {
  transform: none;

  border-color: transparent;
  background: transparent;
  color: var(--color-text-soft);
}

.annotation-chapter-button:focus-visible {
  outline: 1px solid var(--color-text-soft);
  outline-offset: 2px;
}

/* Layout Switcher */

.annotation-layout-switcher {
  flex: 0 0 auto;

  display: inline-flex;
  align-items: center;
  gap: 0.25rem;

  padding: 0.25rem;

  border: 1px solid var(--color-border);
  border-radius: 999px;

  background: var(--color-control-bg);
}

.annotation-layout-button {
  appearance: none;

  min-width: 4.25rem;
  height: 1.75rem;

  display: inline-flex;
  align-items: center;
  justify-content: center;

  padding: 0 0.65rem;

  border: 1px solid transparent;
  border-radius: 999px;

  background: transparent;
  color: var(--color-text-soft);

  font: inherit;
  font-size: 0.76rem;
  line-height: 1;

  cursor: pointer;

  transition:
    border-color 150ms ease,
    background 150ms ease,
    color 150ms ease;
}

.annotation-layout-button:hover {
  color: var(--color-text);
}

.annotation-layout-button.is-active,
.annotation-layout-button[aria-pressed="true"] {
  border-color: var(--color-border);

  background:
    color-mix(
      in srgb,
      var(--color-text) 11%,
      transparent
    );

  color: var(--color-text);
}

.annotation-layout-button:focus-visible {
  outline: 1px solid var(--color-text-soft);
  outline-offset: 2px;
}

/* =========================================================
   Annotation Scroll Area
   ========================================================= */

.annotation-scroll-area {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;

  overflow-y: auto;
  overscroll-behavior-y: contain;

  padding:
    1.5rem
    max(1.5rem, calc((100vw - 1240px) / 2))
    calc(2.5rem + var(--bottom-bar-height));
}

.annotation-page-header {
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;

  border-bottom: 1px solid var(--color-border);
}

.annotation-page-title {
  margin: 0;

  color: var(--color-text);

  font-size: 1.25rem;
  font-weight: 500;
  line-height: 1.35;
}

.annotation-page-count {
  margin: 0.3rem 0 0;

  color: var(--color-text-soft);

  font-size: 0.78rem;
  line-height: 1.4;

  font-variant-numeric: tabular-nums;
}

/* =========================================================
   Annotation Card List
   ========================================================= */

.annotation-card-list {
  min-width: 0;
}

/* Standard Grid */

.annotation-card-list[data-annotation-layout="grid"] {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}

.annotation-card-list[data-annotation-layout="grid"]
.annotation-card {
  height: 100%;
}

/* Masonry Layout */

.annotation-card-list[data-annotation-layout="masonry"] {
  columns: 2;
  column-gap: 1rem;
}

.annotation-card-list[data-annotation-layout="masonry"]
.annotation-card {
  width: 100%;
  margin: 0 0 1rem;

  break-inside: avoid;
  page-break-inside: avoid;
}

/* =========================================================
   Annotation Card
   ========================================================= */

.annotation-card {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
  padding: 1.1rem 1.15rem 1.2rem;

  border: 1px solid var(--color-border);
  border-radius: 1rem;

  background:
    color-mix(
      in srgb,
      var(--color-surface-soft) 90%,
      transparent
    );

  box-shadow:
    0 10px 28px
    rgba(0, 0, 0, 0.12);

  transition:
    border-color 170ms ease,
    background 170ms ease,
    box-shadow 170ms ease,
    transform 170ms ease;
}

.annotation-card:hover {
  transform: translateY(-2px);

  border-color: var(--color-text-soft);

  background:
    color-mix(
      in srgb,
      var(--color-surface-soft) 92%,
      var(--color-text) 8%
    );

  box-shadow:
    0 14px 34px
    rgba(0, 0, 0, 0.16);
}

/* Card Header */

.annotation-card-header {
  min-width: 0;
}

.annotation-card-title {
  margin: 0;

  color: var(--color-text);

  font-size: 1.02rem;
  font-weight: 500;
  line-height: 1.45;

  overflow-wrap: anywhere;
}

.annotation-card-category {
  margin: 0.35rem 0 0;

  color: var(--color-text-soft);

  font-size: 0.74rem;
  line-height: 1.5;

  overflow-wrap: anywhere;
}

/* Card Explanation */

.annotation-card-explanation {
  margin: 0.9rem 0 0;

  color: var(--color-text-muted);

  font-size: 0.88rem;
  line-height: 1.78;

  overflow-wrap: anywhere;
}

/* Chapter Hints
   Usually shown only on the "all" page. */

.annotation-card-chapters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;

  margin-top: auto;
  padding-top: 0.85rem;
}

.annotation-card-chapter {
  display: inline-flex;
  align-items: center;
  justify-content: center;

  min-width: 1.55rem;
  height: 1.45rem;

  padding: 0 0.38rem;

  border-radius: 999px;

  background:
    color-mix(
      in srgb,
      var(--color-assist-annotation) 18%,
      transparent
    );

  color: var(--color-text-soft);

  font-size: 0.66rem;
  line-height: 1;
}

/* =========================================================
   Annotation Search Target
   ========================================================= */

.annotation-card.is-search-target {
  animation:
    annotation-card-search-target
    1600ms
    ease;
}

@keyframes annotation-card-search-target {
  0% {
    border-color:
      var(--color-assist-annotation);

    background:
      color-mix(
        in srgb,
        var(--color-assist-annotation) 28%,
        var(--color-surface-soft)
      );

    box-shadow:
      0 0 0 3px
      color-mix(
        in srgb,
        var(--color-assist-annotation) 18%,
        transparent
      );
  }

  100% {
    border-color: var(--color-border);

    background:
      color-mix(
        in srgb,
        var(--color-surface-soft) 90%,
        transparent
      );

    box-shadow:
      0 10px 28px
      rgba(0, 0, 0, 0.12);
  }
}

/* =========================================================
   Annotation Lazy Loading
   ========================================================= */

.annotation-load-sentinel {
  width: 100%;
  height: 1px;

  margin-top: 1.5rem;

  pointer-events: none;
}

/* =========================================================
   Annotation Empty State Adjustment
   ========================================================= */

.annotation-card-list > .dictionary-empty-state {
  margin-top: 3rem;
}

.annotation-card-list[data-annotation-layout="grid"]
> .dictionary-empty-state {
  grid-column: 1 / -1;
}

.annotation-card-list[data-annotation-layout="masonry"]
> .dictionary-empty-state {
  column-span: all;
}

/* =========================================================
   Annotation Responsive
   ========================================================= */

@media (max-width: 1080px) {
  .annotation-toolbar {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.7rem;
  }

  .annotation-layout-switcher {
    justify-self: start;
  }

  .annotation-card-list[data-annotation-layout="grid"] {
    grid-template-columns:
      repeat(2, minmax(0, 1fr));
  }

  .annotation-card-list[data-annotation-layout="masonry"] {
    columns: 2;
  }
}

@media (max-width: 760px) {
  .annotation-layout-switcher {
    display: none;
  }

  .annotation-toolbar {
    padding-inline: 1rem;
  }

  .annotation-scroll-area {
    padding:
      1.25rem
      1rem
      calc(2rem + var(--bottom-bar-height));
  }

  .annotation-card-list[data-annotation-layout="grid"] {
    grid-template-columns:
      minmax(0, 1fr);
  }

}

@media (max-width: 520px) {
  .annotation-toolbar {
    padding:
      0.7rem
      0.8rem;
  }

  .annotation-chapter-nav {
    gap: 0.25rem;
  }

  .annotation-chapter-button {
    min-width: 2rem;
    height: 1.85rem;

    padding-inline: 0.62rem;

    font-size: 0.75rem;
  }

  .annotation-scroll-area {
    padding:
      1rem
      0.8rem
      calc(1.8rem + var(--bottom-bar-height));
  }

  .annotation-page-header {
    margin-bottom: 1rem;
  }

  .annotation-page-title {
    font-size: 1.1rem;
  }

  .annotation-card {
    padding:
      1rem
      1rem
      1.05rem;
  }

  .annotation-card-title {
    font-size: 0.98rem;
  }

  .annotation-card-explanation {
    font-size: 0.84rem;
    line-height: 1.72;
  }
}

/* Utility Overlay Fullviews */

.utility-fullview {
  position: fixed;

  top:
    var(--top-bar-height);
  right: 0;
  bottom:
    var(--bottom-bar-height);
  left: 0;

  z-index:
    var(--z-utility-fullview);

  display: grid;
  grid-template-rows:
    auto
    minmax(0, 1fr);

  min-width: 0;
  min-height: 0;

  overflow: hidden;

  border-top:
    1px solid
    transparent;

  background:
    var(--color-bg);

  color:
    var(--color-text);
}

.utility-fullview[hidden] {
  display: none;
}

.utility-fullview-header {
  min-height: 76px;

  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;

  padding:
    16px
    28px;

  border-bottom:
    1px solid
    var(--color-border);

  background:
    var(--color-surface);
}

.utility-fullview-heading {
  min-width: 0;
}

.utility-fullview-eyebrow {
  display: block;

  margin-bottom: 4px;

  color:
    var(--color-text-soft);

  font-size: 11px;
  line-height: 1.2;
  letter-spacing: 0.14em;

  text-transform: uppercase;
}

.utility-fullview-title {
  margin: 0;

  color:
    var(--color-text);

  font-family:
    inherit;

  font-size: 26px;
  font-weight: 500;
  line-height: 1.3;
}

.utility-fullview-close {
  width: 36px;
  height: 36px;

  flex: 0 0 auto;

  border:
    1px solid
    var(--color-border);

  border-radius:
    999px;

  display: grid;
  place-items: center;

  padding: 0;

  background:
    var(--color-control-bg);

  color:
    var(--color-text-muted);

  cursor: pointer;
}

.utility-fullview-close:hover {
  background:
    var(--color-control-bg-hover);

  color:
    var(--color-text);
}

.utility-fullview-content {
  min-width: 0;
  min-height: 0;

  overflow-y: auto;

  overscroll-behavior:
    contain;

  scrollbar-gutter:
    stable;

  padding:
    32px
    clamp(28px, 5vw, 72px)
    56px;
}

/* Lock the document beneath an open utility fullview */
body.is-utility-fullview-open {
  position: fixed;

  right: 0;
  left: 0;

  width: 100%;

  overflow: hidden;
}

/* =========================================================
   Responsive
   ========================================================= */

@media (max-width: 1280px) {
  /* Album */

  .album-grid[data-album-density="5"] {
    --album-columns: 4;
  }
}

@media (max-width: 1080px) {
  /* Album */

  body[data-view-mode="album"] .main-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  body[data-view-mode="album"] .left-sidebar {
    display: none;
  }

  .album-mobile-chapter-nav {
    flex:
      0
      0
      auto;

    min-width: 0;

    display: flex;
    gap: 0.5rem;

    overflow-x: auto;
    overflow-y: hidden;

    overscroll-behavior-x:
      contain;

    padding:
      0.8rem
      1.5rem;

    border-bottom:
      1px solid
      var(--color-border);

    background:
      color-mix(
        in srgb,
        var(--color-surface) 94%,
        transparent
      );

    scrollbar-width: thin;
  }

  .album-mobile-chapter-nav
  .album-chapter-nav-item {
    width: auto;
    min-width: 12rem;

    flex:
      0
      0
      auto;
  }

  .album-mobile-chapter-nav
  .sidebar-placeholder {
    flex:
      0
      0
      auto;

    margin: 0;
  }

  .album-topbar {
    grid-template-columns: 1fr;
  }

  .album-tag-bar {
    flex-wrap: nowrap;

    overflow-x: auto;
    overflow-y: hidden;

    overscroll-behavior-x:
      contain;

    padding-bottom: 0.25rem;

    scrollbar-width: thin;
  }

  .album-tag-button {
    flex:
      0
      0
      auto;

    white-space: nowrap;
  }

  .album-favorite-summary {
    justify-content: space-between;
  }

  .album-density-control {
    justify-content: space-between;
  }

  .album-grid[data-album-density="4"],
  .album-grid[data-album-density="5"] {
    --album-columns: 3;
  }
}

@media (max-width: 900px) {
  /* Dictionary */

  .dictionary-topbar {
    grid-template-columns: 1fr;
    gap: 0.8rem;
  }

  .dictionary-book-nav {
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: none;
  }

  .dictionary-book-nav::-webkit-scrollbar {
    display: none;
  }

  .translation-entry-button {
    grid-template-columns:
      minmax(9rem, 0.85fr)
      minmax(12rem, 1.15fr)
      auto;

    gap: 0.8rem;
  }
}

@media (max-width: 760px) {
  /* Album */

  .album-scroll-area {
    padding-inline: 1rem;
  }

  .album-mobile-chapter-nav {
    padding:
      0.7rem
      1rem;

    scrollbar-width: none;
  }

  .album-mobile-chapter-nav::-webkit-scrollbar {
    display: none;
  }

  .album-mobile-chapter-nav
  .album-chapter-nav-item {
    min-width: 10.5rem;

    padding:
      0.55rem
      0.7rem;
  }

  .album-topbar {
    gap: 0.7rem;
    padding:
      0.9rem
      1rem
      0.85rem;
  }

  .album-tag-bar {
    gap: 0.45rem;

    margin-inline: -1rem;

    padding:
      0.1rem
      1rem
      0.35rem;

    scrollbar-width: none;
  }

  .album-tag-bar::-webkit-scrollbar {
    display: none;
  }

  .album-tag-button {
    min-height: 1.95rem;
    padding:
      0.48rem
      0.76rem;
  }

  .album-favorite-summary {
    padding-block: 0.1rem;
  }

  .album-density-control {
    display: none;
  }

  .album-grid[data-album-density="3"],
  .album-grid[data-album-density="4"],
  .album-grid[data-album-density="5"] {
    --album-columns: 2;
  }

  .album-lightbox {
    display: none !important;
  }

  .album-card-button[aria-disabled="true"] {
    cursor: default;
  }

  /* Dictionary */

  .dictionary-topbar {
    padding-inline: 1rem;
  }

  .dictionary-book-button {
    min-width: auto;
    white-space: nowrap;
  }

  .translation-dictionary-view {
    padding-inline: 1rem;
  }

  .translation-page-heading {
    gap: 0.8rem;
  }

  .translation-page-letter {
    min-width: 2.8rem;
    font-size: clamp(2.6rem, 9vw, 4rem);
  }

  .translation-entry-button {
    grid-template-columns:
      minmax(0, 1fr)
      auto;

    gap: 0.25rem 0.75rem;
    padding-inline: 0.6rem;
  }

  .translation-entry-text {
    grid-column: 1;
    grid-row: 1;
  }

  .translation-entry-chapters {
    grid-column: 2;
    grid-row: 1;
  }

  .translation-entry-translation {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .translation-entry-detail {
    padding-inline: 0.6rem;
  }

  .translation-alphabet-nav {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  /* Dictionary */

  .dictionary-topbar {
    gap: 0.7rem;
  }

  .dictionary-book-nav {
    gap: 0.3rem;
  }

  .dictionary-book-button {
    padding-inline: 0.75rem;
    font-size: 0.8rem;
  }

  .dictionary-search-input {
    font-size: 0.82rem;
  }

  .dictionary-search-suggestion {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.2rem;
  }

  .translation-dictionary-view {
    padding-top: 1.25rem;
    padding-bottom: 1.6rem;
  }

  .translation-page-header {
    margin-bottom: 0.9rem;
  }

  .translation-entry-text {
    font-size: 0.9rem;
  }

  .translation-entry-translation {
    font-size: 0.84rem;
  }

  .translation-entry-explanation {
    font-size: 0.83rem;
  }

  .translation-alphabet-nav {
    padding-inline: 0.75rem;
  }

  .translation-alphabet-button {
    width: 1.72rem;
    height: 1.72rem;
    font-size: 0.74rem;
  }
}

@media (max-width: 520px) {
  /* Album */

  .album-grid,
  .album-grid[data-album-density] {
    --album-columns: 1;
  }

  /* Dictionary */

  .dictionary-main {
    grid-template-rows:
      auto
      minmax(0, 1fr)
      auto;
  }

  .dictionary-topbar {
    padding:
      0.8rem
      0.8rem;
  }

  .dictionary-book-nav {
    width: 100%;
  }

  .dictionary-book-button {
    flex: 0 0 auto;
    padding:
      0.48rem
      0.68rem;
  }

  .translation-dictionary-view {
    padding-inline: 0.8rem;
  }

  .translation-page-heading {
    align-items: flex-end;
  }

  .translation-page-letter {
    min-width: 2.4rem;
  }

  .translation-page-title {
    font-size: 0.95rem;
  }

  .translation-page-count {
    font-size: 0.72rem;
  }

  .translation-entry-button {
    padding:
      0.8rem
      0.5rem;
  }

  .translation-entry-detail {
    padding:
      0.15rem
      0.5rem
      1rem;
  }

  .translation-entry-chapters {
    font-size: 0.68rem;
  }

  .translation-entry-aliases {
    gap: 0.3rem;
  }

  .translation-entry-alias {
    font-size: 0.68rem;
  }

  .translation-alphabet-nav {
    padding:
      0.55rem
      0.65rem;
  }

  .translation-alphabet-button {
    width: 1.62rem;
    height: 1.62rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .image-media-frame::before {
    animation:
      none;
  }

  .image-media-frame img,
  .album-lightbox-image {
    transition:
      none;
  }
}