/* Math Facts Blitz — rapid-fire fact-fluency drill, 60 seconds per run */

.mfb-setup {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.mfb-setup h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.mfb-pick-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.mfb-pick {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 10px 14px;
  border-radius: 12px;
  border: 2px solid var(--color-border);
  background: var(--color-bg-alt);
  color: var(--color-text);
  cursor: pointer;
  font: inherit;
  min-width: 170px;
  text-align: left;
}

.mfb-pick strong { font-size: 1rem; }
.mfb-pick small { color: var(--color-text-soft); }

.mfb-pick[aria-pressed="true"] {
  border-color: var(--color-primary);
  background: rgba(79, 216, 224, 0.12);
}

.mfb-pick:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.mfb-start-btn {
  align-self: flex-start;
  margin-top: 4px;
}

.mfb-rewards {
  font-size: 0.85rem;
  color: var(--color-text-soft);
}

.mfb-rewards strong { color: var(--color-text); }

.mfb-play {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 16px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 238, 88, 0.1), rgba(249, 168, 37, 0.1));
  border: 1px solid var(--color-border);
}

.mfb-theme-turbo { background: linear-gradient(180deg, rgba(79, 216, 224, 0.14), rgba(1, 87, 155, 0.14)); }
.mfb-theme-nitro { background: linear-gradient(180deg, rgba(238, 111, 168, 0.14), rgba(94, 53, 177, 0.14)); }
.mfb-theme-hyper { background: linear-gradient(180deg, rgba(102, 187, 106, 0.16), rgba(27, 94, 32, 0.16)); }
.mfb-theme-lightning { background: linear-gradient(180deg, rgba(255, 213, 79, 0.2), rgba(191, 87, 0, 0.16)); }

.mfb-banner {
  width: 100%;
  padding: 12px 16px;
  border-radius: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  font-size: 1.05rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.mfb-timer {
  color: var(--color-accent);
  white-space: nowrap;
}

.mfb-fact {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-text);
  text-align: center;
}

.mfb-choices {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  width: 100%;
  max-width: 360px;
}

.mfb-choice {
  padding: 16px;
  border-radius: 14px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-weight: 700;
  font-size: 1.25rem;
  cursor: pointer;
}

.mfb-choice:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-surface-hover);
}

.mfb-choice--correct {
  border-color: var(--color-success);
  background: rgba(74, 222, 128, 0.18);
}

.mfb-choice--wrong {
  border-color: var(--color-accent);
  background: rgba(238, 111, 168, 0.14);
}

.mfb-choice:disabled {
  cursor: not-allowed;
}

.mfb-results {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
}

.mfb-results h3 {
  margin: 0 0 4px;
  font-size: 1.3rem;
}

.mfb-results-stat {
  color: var(--color-text-soft);
}

.mfb-results-stat strong {
  color: var(--color-text);
  font-size: 1.2rem;
}

.mfb-unlock {
  margin-top: 8px;
  color: var(--color-success);
  font-weight: 700;
}

.mfb-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}