/* =============================================================================
   Stat Card Component
   TASK-047: Stat card styles
   ============================================================================= */

.billing-stat-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-default);
}

.billing-stat-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--bg-elevated);
  color: var(--text-secondary);
  flex-shrink: 0;
}

.billing-stat-card--success .billing-stat-card__icon {
  background: color-mix(in srgb, var(--success) 15%, transparent);
  color: var(--success);
}

.billing-stat-card--warning .billing-stat-card__icon {
  background: color-mix(in srgb, var(--warning) 15%, transparent);
  color: var(--warning);
}

.billing-stat-card--error .billing-stat-card__icon {
  background: color-mix(in srgb, var(--error) 15%, transparent);
  color: var(--error);
}

.billing-stat-card__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  flex: 1;
}

.billing-stat-card__title {
  font-size: var(--text-size-sm);
  color: var(--text-muted);
}

.billing-stat-card__value {
  font-size: var(--text-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.billing-stat-card__footer {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.billing-stat-card__subtitle {
  font-size: var(--text-size-xs);
  color: var(--text-muted);
}

.billing-stat-card__trend {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-size: var(--text-size-xs);
  font-weight: 600;
}

.billing-stat-card__trend--up {
  color: var(--success);
}

.billing-stat-card__trend--down {
  color: var(--error);
}