.flashcards-shell {
  width: min(820px, 100%);
  margin: 0 auto;
  padding: 28px 24px 48px !important;
}
.flashcards-shell h1 { font-size: 2.25rem; line-height: 1.15; margin: 8px 0 16px; }
.flashcards-credit { max-width: 65ch; line-height: 1.6; margin: 0 0 8px; }
.flashcards-source { margin: 0 0 16px; }
.flashcards-shell a { color: var(--module-teal); text-underline-offset: 3px; }
.flashcards-note, .flashcards-help { color: var(--module-muted); font-size: 0.875rem; line-height: 1.6; }
.flashcards-note { margin: 0 0 28px; max-width: 75ch; }
.flashcards-toolbar, .flashcards-position, .flashcards-actions, .flashcards-review, .flashcards-footer { display: flex; align-items: center; gap: 12px; }
.flashcards-toolbar { flex-wrap: wrap; margin-bottom: 22px; }
.flashcards-toolbar label { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; }
.flashcards-shell button, .flashcards-shell select { min-height: 44px; border: 1px solid var(--module-line); border-radius: 12px; padding: 10px 16px; font: inherit; color: var(--module-ink); background: var(--module-panel); }
.flashcards-shell button { cursor: pointer; }
.flashcards-shell button:hover:not(:disabled) { background: var(--module-surface); }
.flashcards-shell :focus-visible { outline: 3px solid var(--module-teal); outline-offset: 4px; }
.flashcards-shell button:disabled { opacity: 0.45; cursor: default; }
.flashcards-shell button[aria-pressed="true"] { background: var(--module-mint); border-color: var(--module-teal); }
.flashcards-position { justify-content: space-between; font-size: 0.875rem; margin-bottom: 12px; color: var(--module-muted); }
.flashcards-shell .flashcard { display: flex; flex-direction: column; justify-content: space-between; gap: 28px; width: 100%; min-height: 300px; padding: 24px 32px; text-align: center; border-color: var(--module-teal); border-radius: 16px; }
.flashcards-shell .flashcard[data-answer="true"] { background: var(--module-current); }
.flashcard-side { color: var(--module-muted); font-size: 0.875rem; align-self: flex-start; }
.flashcard-text { font-size: 1.65rem; line-height: 1.5; white-space: pre-line; overflow-wrap: anywhere; }
.flashcard-detail { font-size: 1rem; line-height: 1.6; color: var(--module-muted); max-width: 65ch; }
.flashcard-hint { font-size: 0.875rem; color: var(--module-muted); }
.flashcards-actions { margin: 16px 0; }
.flashcards-actions button { flex: 1; }
.flashcards-shell .flashcards-primary { background: var(--module-teal); color: white; border-color: var(--module-teal); }
.flashcards-shell .flashcards-primary:hover:not(:disabled) { background: var(--module-ink); }
.flashcards-review { justify-content: space-between; font-size: 0.875rem; }
.flashcards-help { margin: 16px 0 0; }
.flashcards-footer { margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--module-line); flex-wrap: wrap; font-size: 0.875rem; }
.flashcards-shell [hidden] { display: none !important; }
.flashcards-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
@media (max-width: 540px) {
  .flashcards-shell { padding: 20px 16px 32px !important; }
  .flashcards-shell h1 { font-size: 1.8rem; }
  .flashcards-shell .flashcard { padding: 20px; min-height: 300px; }
  .flashcard-text { font-size: 1.3rem; }
  .flashcards-actions { gap: 8px; }
  .flashcards-actions button { padding-inline: 8px; }
}