.interaction-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding-bottom: 8px;
}
.interaction-row label { gap: 6px; }
.viewer {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: minmax(0, 1fr);
  min-height: 300px;
}
.viewer > iframe { grid-column: 1; grid-row: 1; min-width: 0; min-height: 0; }
.viewer.has-focus { grid-template-rows: 310px minmax(260px, 1fr); min-height: 570px; }
.viewer.has-focus > iframe { grid-row: 2; }
.focus-panel[hidden] { display: none; }
.focus-panel {
  grid-column: 1;
  grid-row: 1;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 8px;
  min-width: 0;
  min-height: 0;
  padding: 14px 20px;
  background: #fffdf5;
  border-bottom: 1px solid #c7d5b5;
  overflow: hidden;
}
.focus-title-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.focus-title-row h2 { margin: 0; font-size: 1rem; }
.focus-title-row > span { color: #546a5b; font-size: .75rem; white-space: nowrap; }
.focus-content { min-width: 0; min-height: 0; overflow: auto; scrollbar-gutter: stable; }
.focus-word {
  display: block;
  width: 100%;
  margin: 6px 0 4px;
  min-height: 48px;
  padding: 8px;
  font-size: var(--focus-size, 28px);
  font-weight: bold;
  line-height: 1.65;
  background: #edf4dd;
  border: 0;
  border-bottom: 3px solid #91ad62;
  border-radius: 10px;
  color: #21382e;
  overflow-wrap: anywhere;
  text-align: left;
}
.focus-word:disabled { opacity: 1; cursor: default; font-size: 1.15rem; font-weight: normal; }
.focus-reading { font-size: 1rem; color: #41543d; line-height: 1.8; margin: 8px 0; overflow-wrap: anywhere; }
.focus-context { font-size: 1.1rem; line-height: 1.8; overflow-wrap: anywhere; margin: 0 0 4px; }
.focus-active { background: #e5efc8; border-radius: 3px; padding: 2px 0; box-decoration-break: clone; }
.focus-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; padding-top: 4px; }
.focus-actions button { flex: 1; min-height: 44px; padding: 7px 8px; font-size: .9rem; white-space: nowrap; }
#focus-read-word { background: #315c3e; color: white; border-color: #315c3e; }
#focus-help { font-size: .78rem; line-height: 1.8; color: #546a5b; margin: 0; }
.focus-panel:focus-visible { outline: 3px solid #bc6900; outline-offset: -3px; }
@media (min-width: 1000px) {
  .viewer.has-focus[data-focus-placement="auto"],
  .viewer.has-focus[data-focus-placement="side"] {
    grid-template-columns: minmax(0, 1fr) minmax(300px, 340px);
    grid-template-rows: minmax(0, 1fr);
    min-height: 360px;
  }
  .viewer.has-focus[data-focus-placement="auto"] > iframe,
  .viewer.has-focus[data-focus-placement="side"] > iframe { grid-row: 1; }
  .viewer.has-focus[data-focus-placement="auto"] > .focus-panel,
  .viewer.has-focus[data-focus-placement="side"] > .focus-panel {
    grid-column: 2;
    grid-row: 1;
    border-left: 1px solid #c7d5b5;
    border-bottom: 0;
    padding: 22px;
  }
  .viewer.has-focus[data-focus-placement="auto"] .focus-word,
  .viewer.has-focus[data-focus-placement="side"] .focus-word { margin-top: 24px; }
}
@media (max-width: 680px) {
  .interaction-row { gap: 6px; }
  .interaction-row button, .interaction-row select { font-size: .8rem; padding: 6px 8px; min-height: 36px; }
  .focus-panel { padding: 12px; }
  .focus-title-row > span { display: none; }
  .focus-actions button { flex: none; min-width: 70px; }
}
.focus-title-row #focus-compact { min-height:44px; padding:6px 10px; font-size:.85rem; }
@media (max-width: 680px) {
  .viewer.has-focus { grid-template-rows:max-content minmax(360px,1fr); min-height:580px; }
  .viewer.has-focus.focus-compact { grid-template-rows:58px minmax(360px,1fr); min-height:418px; }
  .focus-panel.is-compact { grid-template-rows:auto; align-content:center; min-height:0; }
  .focus-panel.is-compact :is(.focus-content,.focus-actions,#focus-help) { display:none; }
  .focus-panel { gap:5px; display:flex; flex-direction:column; }
  .focus-content { flex:1 0 120px; min-height:120px; max-height:240px; }
  .focus-title-row,.focus-actions,#focus-help { flex-shrink:0; }
  .focus-reading { margin:3px 0; }
  .focus-context { display:none; }
  .focus-actions button { min-height:44px; font-size:.9rem; }
  .focus-word { margin:0; min-height:44px; line-height:1.45; }
  #focus-help { font-size:.8rem; }
}