/* Flashcards (spaced-repetition review) */

.flashcards { max-width: 760px; margin: 0 auto; gap: 22px; }

.flashcards__header { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.flashcards__count { font-size: 14px; color: var(--text-muted); }

/* Deck picker */
.flashcards__decks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 10px;
}
.flashcards__deck {
  background: var(--card);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  text-decoration: none;
}
.flashcards__deck:hover { border-color: var(--ink); color: var(--ink); text-decoration: none; }
.flashcards__deck.is-active { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.flashcards__deck-label { font-size: 15px; font-weight: 700; }
.flashcards__deck-sub { font-size: 13px; opacity: .85; }

/* Card type */
.flashcards__modes { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; font-size: 13px; color: var(--text-muted); }
.flashcards__mode { padding: 6px 12px; font-size: 13px; }

.flashcards__progress { flex: none; }

/* The card */
.flashcards__card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  min-height: 380px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
  text-align: center;
  box-shadow: 0 30px 50px -36px rgba(28, 35, 33, .35);
}
.flashcards__mastery { display: flex; gap: 4px; margin-bottom: 18px; }
.flashcards__dot { width: 18px; height: 5px; border-radius: 3px; background: var(--line); }
.flashcards__dot.is-on { background: var(--green); }

.flashcards__word { font-size: 72px; line-height: 1.3; }
.flashcards__english { font-size: 56px; line-height: 1.1; }
.flashcards__hint { font-size: 14px; }
.flashcards__prompt { font-family: var(--font-serif); font-size: 36px; }
.flashcards__cloze { font-size: 38px; line-height: 1.7; }
.flashcards__example-en { font-size: 15px; color: var(--text-body); font-style: italic; }

.flashcards__audio {
  background: var(--sand);
  color: var(--ink);
  border: none;
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
}
.flashcards__audio:hover { background: var(--line); }
.flashcards__audio--listen { background: var(--clay); color: var(--text-on-accent); padding: 16px 28px; }
.flashcards__audio--listen:hover { background: var(--clay-hover); }

.flashcards__back {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  outline: none;
}
.flashcards__back-word { font-size: 52px; line-height: 1.3; }
.flashcards__meaning { font-size: 36px; }
.flashcards__meta { font-size: 14px; color: var(--text-muted); }
.flashcards__root { font-size: 18px; }
.flashcards__example { font-size: 24px; }
.flashcards__nuance {
  background: var(--sand-hover);
  border-radius: 12px;
  padding: 12px 14px;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

.flashcards__flip { padding: 16px; }

/* Grade buttons */
.flashcards__grades { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.flashcards__grade {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-md);
  background: var(--card);
  color: var(--ink);
  padding: 12px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  transition: filter .15s ease;
}
.flashcards__grade:hover { filter: brightness(.96); }
.flashcards__grade--again { background: var(--clay-soft); border-color: var(--clay); }
.flashcards__grade--good { background: var(--green-soft); border-color: var(--green); }
.flashcards__grade--easy { background: var(--green); border-color: var(--green); color: var(--paper); }
.flashcards__grade-label { font-size: 15px; font-weight: 700; }
.flashcards__grade-next { font-size: 12px; opacity: .85; }

/* Done and empty states */
.flashcards__done {
  border-radius: var(--radius-lg);
  padding: 44px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  text-align: center;
}
.flashcards__done-ar { font-size: 48px; }
.flashcards__done-title { font-size: 36px; line-height: 1.1; }
.flashcards__done-text { font-size: 16px; opacity: .9; line-height: 1.5; }
.flashcards__done-actions { justify-content: center; --row-gap: 10px; }

.flashcards__empty { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.flashcards__empty-title { font-size: 30px; color: var(--ink); }

@media (max-width: 600px) {
  .flashcards__card { padding: 28px 18px; min-height: 320px; }
  .flashcards__word { font-size: 56px; }
  .flashcards__english { font-size: 40px; }
  .flashcards__cloze { font-size: 30px; }
  .flashcards__back-word { font-size: 42px; }
  .flashcards__meaning { font-size: 30px; }
  .flashcards__grades { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .flashcards__done { padding: 32px 20px; }
}