# Requirements Document

## Introduction

[Provide a brief overview of the feature, its purpose, and its value to users]

## Alignment with Product Vision

[Explain how this feature supports the goals outlined in product.md]

## Requirements

### Requirement 1

**User Story:** As a [role], I want [feature], so that [benefit]

#### Acceptance Criteria

1. WHEN [event] THEN [system] SHALL [response]
2. IF [precondition] THEN [system] SHALL [response]
3. WHEN [event] AND [condition] THEN [system] SHALL [response]

### Requirement 2

**User Story:** As a [role], I want [feature], so that [benefit]

#### Acceptance Criteria

1. WHEN [event] THEN [system] SHALL [response]
2. IF [precondition] THEN [system] SHALL [response]

## Non-Functional Requirements

### Code Architecture and Modularity
- **Single Responsibility Principle**: Each file should have a single, well-defined purpose
- **Modular Design**: Components, utilities, and services should be isolated and reusable
- **Dependency Management**: Minimize interdependencies between modules
- **Clear Interfaces**: Define clean contracts between components and layers

### 品質特性方針

[数値目標を記述する場合は、その根拠（計測方法、比較対象、ユーザー体験への影響）を
 併記すること。根拠のない数値は記載しない]

#### パフォーマンス
- **方針**: [例: ユーザー操作に対して体感上の遅延なくレスポンスすること]
- **計測対象と基準**（根拠がある場合のみ）:

#### セキュリティ
- **方針**: [例: 認証・認可の要件、データ保護の方針]
- **適用基準・規格**（該当する場合）:

#### 信頼性
- **方針**: [例: データの整合性保証、障害時の挙動]
- **回復方針**:

#### ユーザビリティ
- **方針**: [例: アクセシビリティ基準、多言語対応の要否]
- **対象ユーザーの前提条件**:
