/* Both sides remain visible until the flashcards controller enhances the set. */
.flashcards {
  margin-block: var(--space-3, 1.5rem);
  color: var(--color-text-primary, #2c3e50);
  font-family: var(--font-main, "Nunito", "Segoe UI", sans-serif);
}

.flashcards .flashcard {
  margin-block: var(--space-2, 1rem);
  padding: var(--space-3, 1.5rem);
  border: 2px solid var(--color-border-medium, #cbd5e0);
  border-radius: var(--radius-xl, 1rem);
  background: var(--color-bg-white, #fff);
  overflow-wrap: anywhere;
}

.flashcards .flashcard__front,
.flashcards .flashcard__back {
  font-size: var(--text-lg, 1.25rem);
  line-height: var(--leading-relaxed, 1.6);
}

.flashcards .flashcard__front {
  font-weight: var(--font-semibold, 600);
}

.flashcards .flashcard__back {
  margin-top: var(--space-2, 1rem);
  padding-top: var(--space-2, 1rem);
  border-top: 2px solid var(--color-border-light, #e5e7eb);
}

.flashcards[data-flashcards-enhanced] [hidden] {
  display: none !important;
}

.flashcards[data-flashcards-enhanced] .flashcard__back {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.flashcards .flashcards__status,
.flashcards .flashcards__instructions {
  margin: 0 0 var(--space-1, 0.5rem);
  font-size: var(--text-base, 1rem);
  line-height: var(--leading-normal, 1.5);
  color: var(--color-text-gray-light, #475569);
}

.flashcards .flashcards__status {
  font-weight: var(--font-semibold, 600);
}

.flashcards .flashcards__progress {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1, 0.5rem);
  margin-block: var(--space-2, 1rem);
}

.flashcards .flashcards__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--color-border-dark, #94a3b8);
  border-radius: 50%;
  color: var(--color-text-primary, #2c3e50);
  font-size: 0.75rem;
  line-height: 1;
}

.flashcards .flashcards__dot--known {
  border-color: var(--color-success-dark, #229954);
  background: var(--color-success-bg, #d5f4e6);
}

.flashcards .flashcards__dot--current {
  border-color: var(--color-info-dark, #1d4ed8);
  outline: 2px solid var(--color-info-dark, #1d4ed8);
  outline-offset: 2px;
}

.flashcards .flashcards__controls {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2, 1rem);
}

.flashcards .flashcards__button {
  min-height: var(--tap-target-comfortable, 56px);
  min-width: var(--tap-target-comfortable, 56px);
  max-width: 100%;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-border-dark, #94a3b8);
  border-radius: var(--radius-lg, 0.75rem);
  background: var(--color-bg-white, #fff);
  color: var(--color-text-primary, #2c3e50);
  font: inherit;
  font-size: var(--text-lg, 1.25rem);
  font-weight: var(--font-bold, 700);
  line-height: var(--leading-snug, 1.4);
  white-space: normal;
  overflow-wrap: anywhere;
  cursor: pointer;
  touch-action: manipulation;
}

.flashcards .flashcards__button--reveal,
.flashcards .flashcards__button--reset {
  border-color: var(--color-info-dark, #1d4ed8);
  background: var(--color-info-dark, #1d4ed8);
  color: var(--color-text-inverse, #fff);
}

.flashcards .flashcards__button--reveal {
  flex: 1 1 100%;
  min-height: var(--tap-target-large, 64px);
}

.flashcards .flashcards__button--known {
  border-color: var(--color-success-dark, #229954);
  background: var(--color-success-bg, #d5f4e6);
}

.flashcards .flashcards__button--again {
  border-color: var(--color-border-dark, #94a3b8);
  background: var(--color-bg-gray-50, #f8f9fa);
}

.flashcards .flashcards__button:focus-visible,
.flashcards .flashcard__front:focus-visible,
.flashcards .flashcard__back:focus-visible {
  outline: 3px solid var(--color-text-slate, #0f172a);
  outline-offset: 4px;
}

.flashcards .flashcards__status--complete {
  margin-bottom: var(--space-2, 1rem);
  padding: var(--space-3, 1.5rem);
  border-radius: var(--radius-xl, 1rem);
  background: var(--color-success-bg, #d5f4e6);
  font-size: var(--text-lg, 1.25rem);
  font-weight: var(--font-semibold, 600);
}

@media (max-width: 30rem) {
  .flashcards .flashcards__button {
    flex: 1 1 auto;
    padding-inline: var(--space-2, 1rem);
  }

  .flashcards .flashcards__button--reveal {
    flex-basis: 100%;
  }

  .flashcards .flashcard {
    padding: var(--space-2, 1rem);
  }
}

@media (prefers-reduced-motion: no-preference) {
  .flashcards[data-flashcards-enhanced] .flashcard[data-flashcard-revealed] {
    animation: flashcards-turn 140ms cubic-bezier(0.2, 0, 0, 1);
  }
}

@keyframes flashcards-turn {
  from { transform: perspective(1000px) rotateY(-16deg); }
  to { transform: perspective(1000px) rotateY(0deg); }
}

@media (forced-colors: active) {
  .flashcards .flashcards__button:focus-visible,
  .flashcards .flashcard__front:focus-visible,
  .flashcards .flashcard__back:focus-visible {
    outline-color: Highlight;
  }
}

@media print {
  .flashcards[data-flashcards-enhanced] .flashcard[hidden],
  .flashcards[data-flashcards-enhanced] .flashcard__front[hidden],
  .flashcards[data-flashcards-enhanced] .flashcard__back[hidden] {
    display: block !important;
  }

  .flashcards .flashcards__heading,
  .flashcards .flashcards__controls {
    display: none !important;
  }

  .flashcards .flashcard {
    break-inside: avoid;
    animation: none !important;
  }

  .flashcards[data-flashcards-enhanced] .flashcard__back {
    margin-top: var(--space-2, 1rem);
    padding-top: var(--space-2, 1rem);
    border-top: 2px solid var(--color-border-light, #e5e7eb);
  }
}