# Feature Specification: Redesign - Unisono Application

**Feature Branch**: `003-redesign-you-find`  
**Created**: суббота, 11 октября 2025 г.  
**Status**: Draft  
**Input**: User description: "Redesign. You find the instructions in the file .context/redesign.md"

## User Scenarios & Testing *(mandatory)*

### User Story 1 - Responsive and Consistent User Experience (Priority: P1)

As a user, I want to access and interact with the application seamlessly across different devices (desktop, tablet, mobile) so that I can use it comfortably regardless of my screen size or input method.

**Why this priority**: This is the core of the redesign, ensuring accessibility and usability across all platforms.

**Independent Test**: A user can successfully complete a primary task (e.g., create a session, join a session) on a mobile device using touch input, and the UI adapts correctly to the screen size.

**Acceptance Scenarios**:

1.  **Given** a user is on a desktop browser, **When** they resize the browser window to a mobile viewport, **Then** the application layout and elements adjust responsively according to Material 3 guidelines.
2.  **Given** a user is on a mobile device, **When** they interact with any UI element, **Then** touch input is correctly registered and the element responds as expected.
3.  **Given** a user navigates through different pages on a tablet, **When** the device orientation changes, **Then** the layout adapts smoothly without loss of functionality or content.

---

### User Story 2 - Clear Branding and Professional Appearance (Priority: P1)

As a user, I want to see consistent branding (app name, logo, favicon) throughout the application so that I can easily identify the product and perceive it as professional and trustworthy.

**Why this priority**: Branding is fundamental for user recognition and trust, and it applies across all parts of the application.

**Independent Test**: A new user can identify the application by its name and logo on any page, and the favicon is visible in the browser tab.

**Acceptance Scenarios**:

1.  **Given** a user is on any page of the application, **When** they look at the header/navigation, **Then** "Unisono" is clearly displayed as the app name.
2.  **Given** a user opens the application in a browser, **When** the page loads, **Then** the specified logo is visible in the header and the favicon is displayed in the browser tab.

---

### User Story 3 - Improved Readability and User-Friendly Language (Priority: P2)

As a user, I want to read clear, concise, and non-technical language within the application, and see session topics presented without unnecessary prefixes, so that I can easily understand information and focus on the content.

**Why this priority**: Enhances user experience by making the application more approachable and easier to understand.

**Independent Test**: A user can read and understand the purpose of a session topic without encountering technical jargon or redundant prefixes.

**Acceptance Scenarios**:

1.  **Given** a user views a session topic, **When** the topic is displayed, **Then** the prefix "Session: " is not present.
2.  **Given** a user interacts with any text content in the application, **When** they read the text, **Then** it avoids technical terms and uses `ToTitleCase` where appropriate, without excessive capitalization.

---

### User Story 4 - Streamlined Interface (Priority: P3)

As a user, I want a clean and simple interface without unnecessary information, so that I can focus on the core functionality and avoid distractions.

**Why this priority**: Contributes to a less cluttered and more intuitive user experience.

**Independent Test**: A user can navigate the application and confirm that the session status is not visible, leading to a cleaner interface.

**Acceptance Scenarios**:

1.  **Given** a user is on a session-related page, **When** they view the UI, **Then** the session status element is not displayed.

### Edge Cases

-   What happens when a user accesses the application on an extremely small or large screen size? The responsive design should gracefully handle these extremes, potentially by hiding less critical elements or providing scrollable areas.
-   How does the system handle long session topics after removing the "Session: " prefix? The display should truncate or wrap gracefully without breaking the layout.
-   What if the specified logo/favicon image fails to load? A fallback (e.g., a default icon or text) should be displayed to maintain a consistent user experience.

## Requirements *(mandatory)*

### Functional Requirements

-   **FR-001**: The system MUST implement a responsive design that adapts to various screen sizes (desktop, tablet, mobile) and orientations, adhering to Material 3 guidelines.
-   **FR-002**: The system MUST support touch interactions for all UI elements on touch-enabled devices.
-   **FR-003**: The application MUST display the name "Unisono" consistently in all session states and relevant UI headers.
-   **FR-004**: The application MUST display a specified logo in the UI and use it as the favicon.
-   **FR-005**: The application MUST preserve the existing primary button color in the new design.
-   **FR-006**: The application MUST remove the prefix "Session: " from all displayed session topics.
-   **FR-007**: The application MUST avoid technical terms in user-facing copywriting.
-   **FR-008**: The application MUST hide the session status display from the user interface.
-   **FR-009**: The application MUST apply `ToTitleCase` formatting to appropriate text elements and avoid excessive capitalization.
-   **FR-010**: The system MUST maintain all existing user flows and underlying business logic.
-   **FR-011**: The application MUST NOT use placeholders in input fields.
-   **FR-012**: For input fields with validation rules, the application MUST display these rules as a field description directly under the field.
-   **FR-013**: The application MUST utilize Material 3 standard components for displaying error, empty, and loading states.
-   **FR-014**: The application MUST adhere to basic accessibility best practices in its UI design and implementation.

### Assumptions

-   The existing user flow and business logic are stable and will not change during the redesign.
-   A suitable logo and favicon image will be provided.
-   The "primary color that the buttons now have" can be accurately identified and extracted for use in the new design.
-   The application's current structure allows for the integration of Material 3 components and responsive design principles without a complete rewrite of core functionality.

## Success Criteria *(mandatory)*

### Measurable Outcomes

-   **SC-001**: 95% of users report a positive experience when using the application on mobile devices.
-   **SC-002**: The application's branding (name, logo, favicon) is consistently displayed across all pages and device types.
-   **SC-003**: User feedback indicates that the application's language is clear, non-technical, and easy to understand.
-   **SC-004**: The application's UI is perceived as clean and uncluttered by 90% of users.
-   **SC-005**: The application successfully passes all existing functional tests after the redesign, ensuring no regression in core logic.
-   **SC-006**: Mobile page load times are consistently under 2 seconds on a 3G network.

## Clarifications

### Session суббота, 11 октября 2025 г.

- Q: What are the expected performance targets for the redesigned UI, specifically regarding page load times on mobile devices? → A: Page load under 2 seconds on 3G.
- Q: How should the redesigned UI handle common error states (e.g., network disconnection, API failures) and empty states (e.g., no sessions available)? → A: Display Material 3 standard error/empty/loading components.
- Q: Are there any specific security or privacy considerations for the UI redesign beyond preserving existing logic? → A: No additional UI-specific security/privacy requirements.
- Q: What level of accessibility compliance (e.g., WCAG standard) is required for the redesigned UI? → A: Basic accessibility best practices.
- Q: What are the requirements for UI-specific observability (e.g., tracking user interactions, UI performance metrics)? → A: No specific UI observability requirements beyond existing.