/* ══════════════════════════════════════
   OPTION DISPLAY & LAYOUT
══════════════════════════════════════ */

.opts { 
  display: flex; 
  gap: 0.5rem; 
  flex-wrap: wrap; 
}

/* ── SCALE DRILL TRAIL ── */
.scale-trail {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.scale-trail-note {
  color: var(--plus2);
}

.scale-trail-arrow {
  color: rgba(255, 255, 255, 0.3);
  font-size: 0.8rem;
}

.scale-trail-q {
  color: var(--err);
  font-size: 1.3rem;
  animation: pulse-q 0.8s ease-in-out infinite alternate;
}

@keyframes pulse-q {
  from { opacity: 0.5; }
  to   { opacity: 1; }
}

/* ── SCALE BUILDER UI ── */
.scale-target-row {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 0.3rem;
}

.scale-target-label {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 400;
}

.scale-target-notes {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--plus2);
  letter-spacing: 0.06em;
}

.scale-built-grid {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  justify-content: center;
  min-height: 3rem;
  padding: 0.5rem 0.4rem;
  margin: 0.3rem 0;
  width: 100%;
}

.scale-slot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.8rem;
  height: 2.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 94, 0.2);
  border-radius: 4px;
  transition: background 0.15s, color 0.15s;
}

.scale-slot.empty {
  background: rgba(255, 255, 94, 0.04);
  color: transparent;
}

.scale-slot.filled {
  background: rgba(255, 255, 94, 0.15);
  color: #fff;
}

.scale-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.3rem;
}

.scale-actions .btn,
.scale-actions .btn-ghost {
  width: 100%;
}