/* AI 비용 상세 모달 스타일 */
.cost-detail-modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.85);
  z-index: 200;
  align-items: center;
  justify-content: center;
}
.cost-detail-modal.open {
  display: flex;
}
.cost-detail-content {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: 16px;
  padding: 24px 28px;
  width: 90%;
  max-width: 600px;
  max-height: 80vh;
  overflow-y: auto;
}
.cost-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid #334155;
}
.cost-detail-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #f1f5f9;
  display: flex;
  align-items: center;
  gap: 10px;
}
.cost-detail-close {
  font-size: 1.5rem;
  color: #64748b;
  cursor: pointer;
  border: none;
  background: transparent;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}
.cost-detail-close:hover {
  background: #0f172a;
  color: #94a3b8;
}
.transaction-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.transaction-item {
  background: #0f172a;
  border: 1px solid #1e3a5f;
  border-radius: 8px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.transaction-date {
  font-size: .78rem;
  color: #94a3b8;
  font-variant-numeric: tabular-nums;
}
.transaction-amount {
  font-size: .9rem;
  font-weight: 700;
  color: #4ade80;
  font-variant-numeric: tabular-nums;
}
.transaction-desc {
  font-size: .72rem;
  color: #64748b;
  margin-top: 4px;
}
.no-data {
  text-align: center;
  padding: 40px 20px;
  color: #475569;
  font-size: .85rem;
}