/* ===== BALANCE SCALE (天秤パズル) ===== */

.bl-scale-area {
  display: flex;
  align-items: flex-end;
  justify-content: center;
  gap: 0;
  width: 100%;
  max-width: 400px;
  margin: 12px 0;
  position: relative;
}

.bl-beam {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 24px;
  background: rgba(255,255,255,0.35);
  border-radius: 4px;
}

.bl-pan-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.bl-pan-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: rgba(255,255,255,0.5);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bl-pan {
  width: 100%;
  min-height: 90px;
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 6px;
  padding: 10px;
  box-sizing: border-box;
  transition: border-color 0.3s;
}

.bl-pan-sum {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  text-align: center;
  min-height: 28px;
  transition: color 0.2s;
}

.bl-divider {
  width: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 28px;
}

.bl-divider-line {
  width: 2px;
  height: 56px;
  background: rgba(255,255,255,0.2);
  border-radius: 2px;
}

.bl-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 50%;
  font-size: 0.85rem;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  flex-shrink: 0;
}

.bl-chip-pop {
  animation: blChipPop 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes blChipPop {
  0%   { transform: scale(0); opacity: 0; }
  70%  { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

.bl-question-label {
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255,255,255,0.8);
  text-align: center;
  margin: 6px 0;
  min-height: 22px;
}

.bl-answer-btns {
  display: none;
  gap: 12px;
  width: 100%;
  max-width: 400px;
  margin-top: 8px;
}

.bl-answer-btn {
  flex: 1;
  padding: 14px 0;
  background: var(--card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  cursor: pointer;
  transition: background 0.12s, transform 0.12s;
}

.bl-answer-btn:hover {
  background: rgba(255,255,255,0.12);
}

.bl-answer-btn:active {
  transform: scale(0.95);
  background: rgba(139, 92, 246, 0.35);
}

.bl-answer-btn.bl-left-btn {
  border-color: rgba(16, 185, 129, 0.4);
}

.bl-answer-btn.bl-right-btn {
  border-color: rgba(236, 72, 153, 0.4);
}