.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.sheet-library {
  --library-pane-width: var(--library-width);
  position: sticky;
  z-index: 30;
  top: 0;
  display: flex;
  width: var(--library-pane-width);
  height: 100vh;
  height: 100dvh;
  min-width: 0;
  flex-direction: column;
  color: var(--library-text);
  background: var(--library-surface);
  box-shadow: 2px 0 8px var(--chrome-shadow);
}

.library-mobile-header {
  display: none;
}

.library-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  min-height: 3.25rem;
  padding: 0.4rem;
  margin-block-start: auto;
  border-top: 1px solid var(--library-border);

  & button {
    display: inline-grid;
    min-width: 2.4rem;
    min-height: 2.4rem;
    padding: 0.45rem;
    border: 1px solid var(--library-border);
    place-items: center;
    color: var(--library-text);
    background: var(--library-control);
    cursor: pointer;

    &:hover:not(:disabled) {
      background: var(--library-control-hover);
    }

    &:disabled {
      color: var(--library-muted);
      cursor: not-allowed;
    }

    & svg {
      width: 1.25em;
      height: 1.25em;
    }
  }

  & .library-footer-label {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.4rem;
    width: auto;
  }
}

.sheet-library > .operation-status[data-state="error"],
.trash-pane > .operation-status[data-state="error"] {
  padding: 0.65rem;
  border-block: 1px solid var(--library-border);
  pointer-events: none;
  color: var(--library-text);
  font-size: 0.85rem;
  white-space: normal;
  background: var(--library-control);
}

.sheet-library > .operation-status[data-state="error"] {
  position: absolute;
  z-index: 32;
  right: 0;
  bottom: 0;
  left: 0;
  width: var(--library-pane-width);
}

.trash-pane > .operation-status[data-state="error"] {
  width: 100%;
}

.danger-action,
.character-dock .danger-action,
.library-footer .danger-action,
.trash-pane-header .danger-action {
  color: var(--inverse-text);
  border-color: var(--danger);
  background: var(--danger);

  &:hover:not(:disabled) {
    background: var(--danger-strong);
  }
}

.library-close,
.library-open {
  display: none;
}

.sheet-list,
.trash-list {
  min-height: 0;
  flex: 1;
  padding: 0.2rem;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.library-empty-state {
  display: grid;
  min-height: 100%;
  padding: 1.25rem;
  margin: 0;
  place-content: center;
  color: var(--library-muted);
  font-size: var(--library-row-font-size);
  text-align: center;
}

.trash-pane {
  position: absolute;
  z-index: 31;
  top: 0;
  left: var(--library-pane-width);
  display: flex;
  width: var(--library-pane-width);
  height: 100vh;
  height: 100dvh;
  min-width: 0;
  flex-direction: column;
  border-left: 1px solid var(--library-border);
  color: var(--library-text);
  background: var(--library-surface);
  box-shadow: 2px 0 8px var(--chrome-shadow);
}

.trash-pane-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem;
  min-height: 3.25rem;
  padding: 0.4rem;
  border-bottom: 1px solid var(--library-border);

  & h2 {
    min-width: 0;
    flex: 1;
    margin: 0;
    font-family: var(--display-font);
    font-size: 1.15rem;
  }

  & .trash-close {
    grid-template-columns: auto;
    min-width: 2.4rem;
    padding: 0.45rem;
  }

  & button {
    display: inline-grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.4rem;
    min-height: 2.4rem;
    padding: 0.45rem;
    border: 1px solid var(--library-border);
    color: var(--library-text);
    background: var(--library-control);
    font: inherit;
    cursor: pointer;

    &:hover:not(:disabled) {
      background: var(--library-control-hover);
    }

    &:disabled {
      color: var(--library-muted);
      cursor: not-allowed;
    }

    & svg {
      width: 1.25em;
      height: 1.25em;
    }
  }
}

.library-row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--library-row-action-size);
  min-width: 0;
  border-bottom: 1px solid var(--library-border);

  &:has(.library-row-link[aria-current="page"]) {
    background: var(--library-selected);
    box-shadow: inset 0.2rem 0 var(--library-text);
  }
}

.library-row-link {
  display: flex;
  width: 100%;
  min-width: 0;
  min-height: var(--library-row-action-size);
  flex-direction: column;
  justify-content: center;
  appearance: none;
  border: 0;
  color: var(--library-text);
  background: transparent;
  padding: var(--library-row-padding);
  font: inherit;
  font-size: var(--library-row-font-size);
  line-height: 1.1;
  text-align: left;
  text-decoration: none;
  cursor: pointer;

  &:hover {
    background: var(--library-control-hover);
  }

  &[aria-disabled="true"] {
    color: var(--library-muted);
    cursor: wait;
  }
}

.library-row-name {
  overflow: hidden;
  font-weight: 850;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.library-row-updated {
  overflow: hidden;
  margin-top: 0.15rem;
  color: var(--library-muted);
  font-size: var(--library-row-time-font-size);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.library-row-actions-toggle {
  display: grid;
  grid-column: 2;
  grid-row: 1;
  place-items: center;
  min-width: var(--library-row-action-size);
  min-height: var(--library-row-action-size);
  padding: 0.5rem;
  border: 0;
  border-left: 1px solid var(--library-border);
  color: var(--library-text);
  background: transparent;
  cursor: pointer;

  &:hover,
  &[aria-expanded="true"] {
    background: var(--library-control-hover);
  }

  & svg {
    width: 1.15em;
    height: 1.15em;
  }
}

.library-row-menu {
  position: absolute;
  z-index: 35;
  top: calc(100% - 0.15rem);
  right: 0.15rem;
  display: grid;
  min-width: 9rem;
  padding: 0.2rem;
  border: 1px solid var(--library-border);
  color: var(--library-text);
  background: var(--library-surface);
  box-shadow: 0 0.3rem 0.8rem var(--chrome-shadow);

  & button {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 0.45rem;
    min-height: 2.25rem;
    padding: 0.4rem 0.55rem;
    border: 0;
    color: inherit;
    background: transparent;
    text-align: left;
    cursor: pointer;

    &:hover {
      background: var(--library-control-hover);
    }

    &:disabled {
      color: var(--library-muted);
      cursor: not-allowed;
    }

    & svg {
      width: 1.05em;
      height: 1.05em;
    }
  }
}

.library-backdrop {
  position: fixed;
  z-index: 25;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 0;
  border: 0;
  background: var(--library-overlay);
  cursor: pointer;
}

.sheet-export-dialog {
  width: min(32rem, calc(100% - 2rem));
  max-height: calc(100vh - 2rem);
  max-height: calc(100dvh - 2rem);
  padding: 0;
  border: 1px solid var(--library-border);
  color: var(--library-text);
  background: var(--library-surface);
  box-shadow: 0 0.5rem 1.5rem var(--chrome-shadow);

  &::backdrop {
    background: var(--library-overlay);
  }

  & form {
    display: grid;
    gap: 0.75rem;
    padding: 0.75rem;
  }

  & p {
    margin: 0;
    color: var(--library-muted);
    line-height: 1.4;
  }

  & button {
    min-height: 2.4rem;
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--library-border);
    color: var(--library-text);
    background: var(--library-control);
    font: inherit;
    font-weight: 800;
    cursor: pointer;

    &:hover:not(:disabled) {
      background: var(--library-control-hover);
    }

    &:disabled {
      color: var(--library-muted);
      cursor: not-allowed;
    }
  }
}

.sheet-export-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;

  & h2 {
    margin: 0;
    font-family: var(--display-font);
    font-size: 1.25rem;
  }

  & button {
    display: inline-grid;
    width: 2.4rem;
    padding: 0.45rem;
    place-items: center;

    & svg {
      width: 1.25em;
      height: 1.25em;
    }
  }
}

.sheet-export-selection {
  display: grid;
  gap: 0.75rem;
}

.sheet-export-all,
.sheet-export-private-notes,
.sheet-export-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 0.6rem;
  min-height: 2.5rem;
  padding: 0.45rem 0.55rem;
  cursor: pointer;
}

.sheet-export-all,
.sheet-export-private-notes {
  border: 1px solid var(--library-border);
  font-weight: 850;
}

.sheet-export-list {
  display: grid;
  max-height: min(24rem, 55vh);
  overflow-y: auto;
  border: 1px solid var(--library-border);
  overscroll-behavior: contain;
}

.sheet-export-option {
  border-bottom: 1px solid var(--library-border);

  &:last-child {
    border-bottom: 0;
  }

  &:hover {
    background: var(--library-control-hover);
  }
}

.sheet-export-option-copy {
  display: grid;
  min-width: 0;
  gap: 0.12rem;
}

.sheet-export-option-name {
  overflow: hidden;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.sheet-export-option-updated {
  color: var(--library-muted);
  font-size: var(--library-row-time-font-size);
}

.sheet-export-actions {
  display: flex;
  justify-content: flex-end;
}

.archive-reconciliation-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;

  & section {
    display: grid;
    align-content: start;
    gap: 0.55rem;
    min-width: 0;
    padding: 0.7rem;
    border: 1px solid var(--library-border);
  }

  & h3 {
    margin: 0;
    font-family: var(--display-font);
    font-size: 1rem;
  }

  & p {
    min-height: 2.8em;
    overflow-wrap: anywhere;
    color: var(--library-text);
    font-weight: 800;
  }
}

@media (max-width: 34rem) {
  .archive-reconciliation-options {
    grid-template-columns: minmax(0, 1fr);
  }
}

.preview-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.preview-status {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem;
  color: var(--character-dock-status);
  font-size: 0.8rem;
  white-space: nowrap;

  & strong {
    color: var(--inverse-text);
    font-family: var(--display-font);
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }
}

.application-state {
  width: min(42rem, calc(100% - 2rem));
  padding: clamp(1rem, 3vw, 2rem);
  margin: clamp(1rem, 5vh, 3rem) auto;
  border: 1px solid var(--library-state-border);
  color: var(--ink);
  background: var(--library-state-surface);
  box-shadow: 0 0.25rem 0.8rem var(--sheet-shadow);

  & p {
    margin: 0 0 0.9rem;
    color: var(--muted-text);
    line-height: 1.45;
  }

  & h2 {
    margin: 0;
    font-family: var(--display-font);
    font-size: 1.1rem;
  }
}

.application-state-actions > section {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;

  & h2 {
    flex-basis: 100%;
  }

  & button {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    min-height: 2.5rem;
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--library-state-border);
    color: var(--ink);
    background: var(--paper);
    font-weight: 800;
    cursor: pointer;

    &:hover {
      background: var(--subtle-surface);
    }

    &:disabled {
      color: var(--disabled-text);
      cursor: not-allowed;
    }

    & svg {
      width: 1.15em;
      height: 1.15em;
    }
  }
}

.history-controls {
  grid-row: 1;
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.45rem;
  padding: 0.45rem;
  border-bottom: 1px solid var(--character-dock-control-border);
  border-radius:
    var(--character-dock-radius)
    var(--character-dock-radius)
    0
    0;
  background: var(--character-dock-background);

  &[data-preview] .history-preview-copy strong {
    color: var(--history-accent);
  }

  &:not([data-preview]) .history-preview-copy strong {
    color: var(--history-current-accent);
  }
}

.history-preview-copy {
  display: grid;
  min-width: 0;
  margin-inline-end: auto;
  font-size: 0.78rem;
  line-height: 1.15;

  & strong {
    color: var(--inverse-text);
    font-family: inherit;
    letter-spacing: normal;
    text-transform: none;
    white-space: nowrap;
  }

  & span {
    overflow: hidden;
    color: var(--character-dock-status);
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

.history-navigation {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.45rem;
}

.history-drawer {
  grid-row: 2;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  min-width: 0;
  min-height: 0;
  max-height:
    calc(
      80dvh - var(--character-dock-bottom-offset) -
      (2 * var(--character-dock-control-size)) - 1.6rem
    );
  overflow: hidden;
  contain: inline-size;
  color: var(--history-text);
  background: var(--history-surface);
  transition:
    max-height var(--motion-fast) ease-out,
    visibility 0s linear;

  &[data-closed] {
    max-height: 0;
    visibility: hidden;
    transition:
      max-height var(--motion-fast) ease-out,
      visibility 0s linear var(--motion-fast);
  }
}

.character-dock[data-history-open] .history-drawer {
  border-bottom: 1px solid var(--character-dock-control-border);
}

.character-dock[data-history-open][data-sheet-details-open] .history-drawer {
  border-bottom: 0;
}

.sheet-details-drawer {
  grid-row: 2;
  display: grid;
  gap: 0.75rem;
  min-width: 0;
  padding: 0.75rem;
  border-bottom: 1px solid var(--character-dock-control-border);
  color: var(--history-text);
  background: var(--history-surface);
}

.character-dock[data-history-open][data-sheet-details-open] .sheet-details-drawer {
  border-top: 0.18rem solid var(--character-dock-control-border);
}

.character-dock[data-sheet-details-open]:not(:has(.history-controls:not([hidden])))
.sheet-details-drawer {
  border-radius:
    var(--character-dock-radius)
    var(--character-dock-radius)
    0
    0;
}

.sheet-details-drawer label {
  display: grid;
  gap: 0.3rem;
  min-width: 0;
  color: var(--history-text);
  font-size: 0.85rem;
  font-weight: 800;
}

.sheet-details-drawer :is(input, textarea) {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border: 1px solid var(--history-border);
  color: var(--history-text);
  background: var(--paper);
  font: inherit;
  font-weight: 400;
}

.sheet-details-drawer input::placeholder {
  color: var(--history-muted);
  opacity: 1;
}

.sheet-details-drawer textarea {
  min-height: 5.5rem;
  max-height: 9rem;
  overflow-y: auto;
  line-height: 1.4;
  resize: vertical;
}

.sheet-details-drawer :is(input, textarea):is([readonly], :disabled) {
  color: var(--locked-text);
  background: var(--disabled-surface);
}

.character-dock #open-sheet-details[aria-expanded="true"] {
  color: var(--character-dock-background);
  border-color: var(--inverse-text);
  background: var(--inverse-text);
}

#open-sheet-details[data-history-change="quick-preview"] {
  outline: 0.18rem solid var(--history-quick-accent);
  outline-offset: 0.08rem;
  background: var(--history-quick-preview);
}

#open-sheet-details[data-history-change="current"] {
  outline: 0.18rem solid var(--history-current-accent);
  outline-offset: 0.08rem;
  background: var(--history-current-selected);
}

#open-sheet-details[data-history-change="selected"] {
  outline: 0.18rem solid var(--history-accent);
  outline-offset: 0.08rem;
  background: var(--history-selected);
}

.character-dock[data-history-open]:not(:has(.history-controls:not([hidden])))
.history-drawer {
  border-radius:
    var(--character-dock-radius)
    var(--character-dock-radius)
    0
    0;
}

.history-status {
  margin: 0;
  padding: 0.65rem 0.75rem;
  color: var(--history-muted);
  font-size: 0.85rem;

  &:empty {
    display: none;
  }
}

.history-list {
  min-height: 0;
  padding: 0.2rem;
  margin: 0;
  overflow-y: auto;
  list-style: none;
  overscroll-behavior: contain;
}

.history-item {
  position: relative;
  min-width: 0;
  margin-inline-start: calc(var(--history-branch-depth, 0) * 0.9rem);
}

.history-item:not([data-branch-depth="0"]) {
  &::before,
  &::after {
    position: absolute;
    z-index: 1;
    left: -0.55rem;
    content: "";
    pointer-events: none;
  }

  &::before {
    inset-block: 0;
    border-inline-start: 1px solid var(--history-border);
  }

  &::after {
    top: 50%;
    width: 0.55rem;
    border-block-start: 1px solid var(--history-border);
  }
}

.character-dock button.history-row {
  display: grid;
  width: 100%;
  min-height: var(--library-row-action-size);
  align-items: stretch;
  justify-content: stretch;
  gap: 0.12rem;
  padding: 0.66rem 0.7rem;
  border: 0;
  border-bottom: 1px solid var(--history-border);
  color: var(--history-text);
  background: transparent;
  font: inherit;
  font-size: 0.82rem;
  text-align: left;
  cursor: pointer;

  &:hover {
    color: var(--history-text);
    background: var(--history-quick-preview);
    box-shadow: inset 0.22rem 0 var(--history-quick-accent);
  }
}

.history-item[data-quick-preview] .history-row {
  color: var(--history-text);
  background: var(--history-quick-preview);
  box-shadow: inset 0.22rem 0 var(--history-quick-accent);
}

.history-item[data-selected] .history-row {
  padding-inline-end: calc(var(--character-dock-control-size) + 0.8rem);
  pointer-events: none;
  color: var(--history-text);
  background: var(--history-selected);
  box-shadow: inset 0.22rem 0 var(--history-accent);
  cursor: default;
}

.history-item[aria-current="true"][data-selected] .history-row {
  padding-inline-end: 0.7rem;
  background: var(--history-current-selected);
  box-shadow: inset 0.22rem 0 var(--history-current-accent);
}

.history-item[aria-current="true"]:not([data-selected], [data-quick-preview])
.history-row {
  color: var(--history-muted);
}

.history-item:is([data-quick-preview], [data-selected]) .history-row-meta {
  color: var(--history-muted);
}

.character-dock button.history-row-restore {
  position: absolute;
  z-index: 1;
  top: 50%;
  right: 0.4rem;
  min-width: 2.15rem;
  min-height: 2.15rem;
  padding: 0.35rem;
  border-color: var(--history-accent);
  color: var(--history-text);
  background: var(--history-surface);
  transform: translateY(-50%);

  &:hover:not(:disabled) {
    background: var(--history-selected);
  }

  & svg {
    width: 1.1em;
    height: 1.1em;
  }
}

.history-row-heading {
  display: block;
  font-size: 0.86rem;
  font-weight: 850;
}

.history-row-meta {
  display: block;
  color: var(--history-muted);
  font-size: var(--library-row-time-font-size);
}

[data-field][data-history-change="quick-preview"] {
  outline: 0.18rem solid var(--history-quick-accent);
  outline-offset: 0.08rem;
  background-color: var(--history-quick-field) !important;
}

[data-field][data-history-change="current"] {
  outline: 0.18rem solid var(--history-current-accent);
  outline-offset: 0.08rem;
  background-color: var(--history-current-selected) !important;
}

[data-field][data-history-change="selected"] {
  outline: 0.18rem solid var(--history-accent);
  outline-offset: 0.08rem;
  background-color: var(--history-selected) !important;
}

@media (max-width: 64rem), (pointer: coarse) {
  .application-shell {
    grid-template-columns: minmax(0, 1fr);
  }

  .sheet-library {
    --library-pane-width: 100vw;
    position: fixed;
    z-index: 50;
    inset: 0;
    width: 100vw;
    max-width: none;
    height: 100vh;
    height: 100dvh;
    overflow: hidden;
    visibility: hidden;
    transform: translateX(-100%);
    transition:
      visibility 0s linear var(--motion-fast),
      transform var(--motion-fast) ease-out;
  }

  .sheet-library[data-open] {
    visibility: visible;
    transform: translateX(0);
    transition-delay: 0s;
  }

  .library-mobile-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 3.25rem;
    padding:
      max(0.4rem, env(safe-area-inset-top, 0px))
      max(0.4rem, env(safe-area-inset-right, 0px))
      0.4rem
      max(0.4rem, env(safe-area-inset-left, 0px));
    border-bottom: 1px solid var(--library-border);

    & strong {
      font-family: var(--display-font);
      font-size: 1.05rem;
    }

    & button {
      display: inline-grid;
      width: 2.4rem;
      height: 2.4rem;
      padding: 0.45rem;
      border: 1px solid var(--library-border);
      place-items: center;
      color: var(--library-text);
      background: var(--library-control);
      cursor: pointer;

      & svg {
        width: 1.25em;
        height: 1.25em;
      }
    }
  }

  .trash-pane {
    position: absolute;
    z-index: 2;
    inset: 0;
    left: 0;
    display: flex;
    width: 100%;
    height: 100%;
    border-left: 0.25rem solid var(--history-accent);
    visibility: hidden;
    transform: translateX(100%);
    transition:
      visibility 0s linear var(--motion-fast),
      transform var(--motion-fast) ease-out;
  }

  .trash-pane[data-open] {
    visibility: visible;
    transform: translateX(0);
    transition-delay: 0s;
  }

  .trash-pane-header {
    padding-block-start: max(0.4rem, env(safe-area-inset-top, 0px));
  }

  .library-backdrop {
    display: none;
  }

  .library-close,
  .library-open,
  .trash-close {
    display: inline-grid;
  }
}