.fc-level-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .5rem;
}

.fc-level-link {
    display: flex;
    flex-direction: column;
    gap: .2rem;
    padding: .75rem;
    border: 1px solid var(--bs-border-color);
    border-radius: .375rem;
    color: var(--bs-body-color);
    text-decoration: none;
    font-size: .875rem;
}

.fc-level-link:hover,
.fc-level-link:focus-visible {
    border-color: var(--bs-primary);
    background: var(--bs-tertiary-bg);
}

.fc-level-link.active {
    border-color: var(--bs-primary);
    background: var(--bs-primary);
    color: #fff;
}

@media (min-width: 768px) {
    .fc-level-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Cover the stable fallback card only until the browser deals its first shuffle. */
#fcMain .flashcard-card[data-auto-randomize="true"] {
    position: relative;
}

#fcMain .flashcard-card[data-auto-randomize="true"] > .card-body {
    visibility: hidden;
}

#fcMain .flashcard-card[data-auto-randomize="true"]::after {
    content: "Shuffling this deck…";
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    border-radius: inherit;
    background: var(--bs-body-bg, #fff);
    color: var(--bs-primary, #0d6efd);
    font-weight: 600;
}