/* ツールチップ用スタイル */
.tooltip-trigger {
  position: relative;
  display: inline-flex;
  align-items: center;
  cursor: help;
}

.tooltip-icon {
  width: 16px;
  height: 16px;
  margin-left: 6px;
  color: #6B7280;
  transition: color 0.2s ease;
}

.tooltip-trigger:hover .tooltip-icon {
  color: #374151;
}

.tooltip-bubble {
  position: absolute;
  background: #374151;
  color: white;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 14px;
  white-space: nowrap;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease-in-out;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.tooltip-arrow {
  position: absolute;
  width: 0;
  height: 0;
  border-style: solid;
}

/* レスポンシブ対応 */
@media (max-width: 640px) {
  .tooltip-bubble {
    max-width: 200px;
    white-space: normal;
    word-wrap: break-word;
  }
}

/* アクセシビリティ対応 */
@media (prefers-reduced-motion: reduce) {
  .tooltip-bubble {
    transition: none;
  }
  
  .tooltip-icon {
    transition: none;
  }
}

/* 高コントラストモード対応 */
@media (prefers-contrast: high) {
  .tooltip-bubble {
    background: #000000;
    border: 1px solid #ffffff;
  }
  
  .tooltip-icon {
    color: #000000;
  }
}