.nf-wrap { display: flex; flex-direction: column; gap: 16px; align-items: center; max-width: 480px; margin: 0 auto; }

.nf-diffs { display: flex; gap: 8px; }
.nf-diff {
  padding: 8px 16px;
  border-radius: 999px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
}
.nf-diff:hover { border-color: var(--color-primary); }
.nf-diff--active { border-color: var(--color-primary); background: var(--color-primary); color: var(--color-on-accent); }

.nf-target {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-text);
}
.nf-target span { color: var(--color-primary); font-size: 32px; }

.nf-tiles {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  min-height: 68px;
  align-items: center;
}
.nf-tile {
  width: 64px;
  height: 64px;
  border-radius: 14px;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.1s ease, border-color 0.1s ease;
}
.nf-tile:hover { border-color: var(--color-primary); transform: translateY(-2px); }
.nf-tile--selected { border-color: var(--color-accent); background: var(--color-accent); color: var(--color-on-accent); transform: translateY(-2px); }

.nf-ops { display: flex; gap: 10px; }
.nf-op {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-soft);
  font-size: 24px;
  font-weight: 700;
  cursor: pointer;
}
.nf-op--ready { border-color: var(--color-primary); color: var(--color-primary); }
.nf-op--ready:hover { background: var(--color-primary); color: var(--color-on-accent); }

.nf-toolbar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }

@media (max-width: 480px) {
  .nf-tile { width: 54px; height: 54px; font-size: 18px; }
  .nf-op { width: 48px; height: 48px; font-size: 20px; }
}