export default apply-mantel-styles

name	apply-mantel-styles
description	Provides guidelines for applying Mantel's brand styles to diagrams and frontend components. Use when asked to create visuals that need to align with Mantel's branding.

Rules For Applying Mantel Brand Styles

When creating visual diagrams or frontend components, you can apply the following style guidelines to ensure consistency with the Mantel brand identity.

Colour Scheme

• You should aim to use the following primary colours from the Mantel brand palette.
• You may also use tints and shades of these colours as needed, but avoid introducing non-brand colours.

Ocean: #1E5E82 | rgb(30, 94, 130) Flamingo: #D86E89 | rgb(216, 110, 137) Deep Ocean: #002A41 | rgb(0, 42, 65) Sky Blue: #81CCEA | rgb(129, 204, 234) Cloud: #EEF9FD | rgb(238, 249, 253)

---

General Design Principles

<GENERAL_PRINCIPLES> <COLOUR_HIERARCHY> 1. Primary Actions/Elements: Ocean (#1E5E82) 2. Secondary/Supporting: Sky Blue (#81CCEA) 3. Emphasis/Accent: Flamingo (#D86E89) 4. Foundation/Authority: Deep Ocean (#002A41) 5. Background/Neutral: Cloud (#EEF9FD) </COLOUR_HIERARCHY>

<SEMANTIC_USAGE> - Use Ocean for primary actions, main navigation, success states - Use Sky Blue for interactive elements, information, secondary actions - Use Flamingo sparingly for CTAs, warnings, important highlights - Use Deep Ocean for text, borders, authoritative elements - Use Cloud for backgrounds, subtle dividers, inactive states </SEMANTIC_USAGE>

<CONSISTENCY_RULES> - Avoid mixing colour schemes from other brands - Maintain consistent colour meanings across all diagrams in a project - When transparency is needed, use rgba values of the brand colours - For hover states, darken by 10-15% or lighten by 10-15% staying within brand </CONSISTENCY_RULES> </GENERAL_PRINCIPLES>

---

Mermaid Styles

Example Mermaid class definitions to apply Mantel brand styles to diagrams

<MERMAID_THEME>

classDef process fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef components fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef subprocess fill:#EEF9FD,stroke:#1E5E82,stroke-width:1px,color:#002A41,stroke-dasharray:5 5

classDef inputOutput fill:#81CCEA,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef api fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41 classDef user fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41 classDef external fill:#81CCEA,stroke:#002A41,stroke-width:2px,color:#002A41,stroke-dasharray:3 3

classDef decision fill:#D86E89,stroke:#002A41,stroke-width:2px,color:#FFFFFF classDef critical fill:#D86E89,stroke:#002A41,stroke-width:2px,color:#FFFFFF classDef error fill:#D86E89,stroke:#002A41,stroke-width:3px,color:#FFFFFF classDef warning fill:#D86E8955,stroke:#D86E89,stroke-width:2px,color:#002A41 classDef security fill:#D86E89,stroke:#002A41,stroke-width:3px,color:#FFFFFF,stroke-dasharray:2 1

classDef data fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef storage fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef database fill:#002A41,stroke:#1E5E82,stroke-width:2px,color:#EEF9FD classDef cache fill:#002A4166,stroke:#1E5E82,stroke-width:2px,color:#002A41

classDef start fill:#1E5E82,stroke:#002A41,stroke-width:3px,color:#EEF9FD classDef end fill:#002A41,stroke:#1E5E82,stroke-width:3px,color:#EEF9FD classDef success fill:#1E5E8233,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef pending fill:#81CCEA55,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:5 5 classDef active fill:#1E5E82,stroke:#002A41,stroke-width:2px,color:#EEF9FD classDef complete fill:#1E5E8255,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef disabled fill:#EEF9FD,stroke:#81CCEA66,stroke-width:1px,color:#81CCEA classDef inactive fill:#EEF9FD,stroke:#81CCEA66,stroke-width:1px,color:#81CCEA

classDef manual fill:#EEF9FD,stroke:#D86E89,stroke-width:2px,color:#002A41 classDef automated fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef async fill:#81CCEA33,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:8 3 classDef sync fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41

classDef system fill:#002A4133,stroke:#002A41,stroke-width:2px,color:#002A41 classDef network fill:#81CCEA33,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef queue fill:#81CCEA55,stroke:#1E5E82,stroke-width:2px,color:#002A41 classDef monitoring fill:#EEF9FD,stroke:#81CCEA,stroke-width:2px,color:#002A41,stroke-dasharray:1 1

classDef highlight fill:#D86E8922,stroke:#D86E89,stroke-width:3px,color:#002A41 classDef focus fill:#1E5E8244,stroke:#1E5E82,stroke-width:3px,color:#002A41 classDef selected fill:#81CCEA44,stroke:#002A41,stroke-width:3px,color:#002A41

classDef secondary fill:#EEF9FD,stroke:#81CCEA,stroke-width:2px,color:#002A41 classDef note fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#1E5E82 classDef comment fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#1E5E82,stroke-dasharray:3 3 classDef optional fill:#EEF9FD,stroke:#81CCEA,stroke-width:1px,color:#002A41,stroke-dasharray:5 5

classDef default fill:#EEF9FD,stroke:#1E5E82,stroke-width:2px,color:#002A41 </MERMAID_THEME>

<MERMAID_USAGE_GUIDE>

• Use 'process' for standard workflow steps
• Use 'subprocess' for nested or child processes
• Use 'components' for system components or modules

• Use 'inputOutput' for user interactions or system I/O
• Use 'user' for user/actor specific elements
• Use 'api' for external service connections
• Use 'external' for third-party systems or external dependencies

• Use 'decision' for branching logic or critical choices
• Use 'critical' for important warnings or highlights
• Use 'error' for error states or failure conditions
• Use 'warning' for caution states (less severe than errors)
• Use 'security' for security-related checkpoints or processes

• Use 'data' for data objects or data flow
• Use 'storage' or 'database' for persistent storage
• Use 'cache' for temporary storage or caching layers

• Use 'start' for process start points
• Use 'end' for process end points
• Use 'success' for successful completion states
• Use 'pending' for waiting or queued states
• Use 'active' for currently running processes
• Use 'complete' for finished processes
• Use 'disabled' or 'inactive' for unavailable elements

• Use 'manual' for human/manual processes
• Use 'automated' for automatic processes
• Use 'async' for asynchronous operations
• Use 'sync' for synchronous operations

• Use 'system' for internal system components
• Use 'network' for network-related elements
• Use 'queue' for message queues or buffers
• Use 'monitoring' for logging or monitoring components

• Use 'highlight' for temporarily emphasised elements
• Use 'focus' for elements requiring attention
• Use 'selected' for user-selected items

• Use 'secondary' for supporting or auxiliary elements
• Use 'note' for annotations or explanatory text
• Use 'comment' for inline comments or documentation
• Use 'optional' for optional steps or components </MERMAID_USAGE_GUIDE>

<TRANSPARENCY_NOTE> Note: Some classes use transparency via hex alpha values (e.g., #81CCEA55)

• Last 2 digits represent opacity: FF=100%, CC=80%, 99=60%, 66=40%, 55=33%, 33=20%, 22=13%
• Used for: warning, cache, pending, disabled, system, network, queue, highlight states
• This creates visual hierarchy without introducing non-brand colours </TRANSPARENCY_NOTE>

<MERMAID_RULES>

• Use
  instead of \n for line breaks
• Apply standard colour theme unless specified otherwise
• Do NOT use round brackets ( ) within item labels or descriptions
• Mermaid does not support unordered lists within item labels </MERMAID_RULES>

---

PlantUML Styles

Apply these colour definitions at the start of PlantUML diagrams

<PLANTUML_RULES> !define OCEAN #1E5E82 !define FLAMINGO #D86E89 !define DEEP_OCEAN #002A41 !define SKY_BLUE #81CCEA !define CLOUD #EEF9FD

skinparam backgroundColor CLOUD skinparam defaultFontColor DEEP_OCEAN

' Activity Diagrams skinparam activity { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN StartColor OCEAN EndColor DEEP_OCEAN BarColor FLAMINGO DiamondBackgroundColor SKY_BLUE DiamondBorderColor OCEAN }

' Class Diagrams skinparam class { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN AttributeFontColor OCEAN StereotypeFontColor SKY_BLUE ArrowColor OCEAN HeaderBackgroundColor SKY_BLUE }

' Sequence Diagrams skinparam sequence { ParticipantBackgroundColor SKY_BLUE ParticipantBorderColor OCEAN ActorBackgroundColor CLOUD ActorBorderColor DEEP_OCEAN LifeLineBorderColor OCEAN ArrowColor OCEAN GroupBackgroundColor CLOUD GroupBorderColor SKY_BLUE NoteBackgroundColor CLOUD NoteBorderColor FLAMINGO }

' Component Diagrams skinparam component { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN InterfaceBackgroundColor SKY_BLUE InterfaceBorderColor DEEP_OCEAN }

' State Diagrams skinparam state { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN StartColor OCEAN EndColor DEEP_OCEAN AttributeFontColor OCEAN }

' Use Case Diagrams skinparam usecase { BackgroundColor CLOUD BorderColor OCEAN FontColor DEEP_OCEAN ActorBackgroundColor SKY_BLUE ActorBorderColor DEEP_OCEAN }

' Error/Warning States skinparam note { BackgroundColor<> FLAMINGO BorderColor<> DEEP_OCEAN FontColor<> CLOUD } </PLANTUML_RULES>

---

Frontend Component Styles

<CSS_VARIABLES> :root { /* Primary Colours */ --brand-ocean: #1E5E82; --brand-flamingo: #D86E89; --brand-deep-ocean: #002A41; --brand-sky-blue: #81CCEA; --brand-cloud: #EEF9FD;

  /* Semantic Mappings */
  --colour-primary: var(--brand-ocean);
  --colour-primary-dark: var(--brand-deep-ocean);
  --colour-secondary: var(--brand-sky-blue);
  --colour-accent: var(--brand-flamingo);
  --colour-background: var(--brand-cloud);
  --colour-surface: #FFFFFF;

  /* Text Colours */
  --text-primary: var(--brand-deep-ocean);
  --text-secondary: var(--brand-ocean);
  --text-on-primary: var(--brand-cloud);
  --text-on-accent: #FFFFFF;

  /* State Colours */
  --colour-error: var(--brand-flamingo);
  --colour-warning: var(--brand-flamingo);
  --colour-success: var(--brand-ocean);
  --colour-info: var(--brand-sky-blue);

  /* Shadows and Overlays */
  --shadow-colour: rgba(0, 42, 65, 0.1);
  --overlay-light: rgba(238, 249, 253, 0.9);
  --overlay-dark: rgba(0, 42, 65, 0.8);

} </CSS_VARIABLES>

<COMPONENT_GUIDELINES> Primary: - Background: Ocean (#1E5E82) - Text: Cloud (#EEF9FD) - Hover: Deep Ocean (#002A41) - Border: none or Ocean

Secondary: - Background: Sky Blue (#81CCEA) - Text: Deep Ocean (#002A41) - Hover: Ocean (#1E5E82) with Cloud text - Border: Ocean (#1E5E82)

Accent/CTA: - Background: Flamingo (#D86E89) - Text: White (#FFFFFF) - Hover: Darker Flamingo (darken by 10%) - Border: none

Ghost/Outline: - Background: transparent - Text: Ocean (#1E5E82) - Hover: Cloud (#EEF9FD) background - Border: Ocean (#1E5E82)

Header: - Background: Deep Ocean (#002A41) - Text: Cloud (#EEF9FD) - Active: Sky Blue (#81CCEA) - Hover: Ocean (#1E5E82) background

Sidebar: - Background: Cloud (#EEF9FD) - Text: Deep Ocean (#002A41) - Active: Ocean (#1E5E82) with Cloud text - Hover: Sky Blue (#81CCEA) background

Input Fields: - Background: White (#FFFFFF) - Border: Sky Blue (#81CCEA) - Focus Border: Ocean (#1E5E82) - Text: Deep Ocean (#002A41) - Placeholder: Sky Blue (#81CCEA) - Error Border: Flamingo (#D86E89)

Labels: - Colour: Ocean (#1E5E82) - Required Indicator: Flamingo (#D86E89)

Standard Card: - Background: White (#FFFFFF) - Border: Cloud (#EEF9FD) - Shadow: rgba(0, 42, 65, 0.1)

Highlighted Card: - Background: Cloud (#EEF9FD) - Border: Sky Blue (#81CCEA) - Shadow: rgba(30, 94, 130, 0.15)

Error: - Background: Flamingo (#D86E89) at 10% opacity - Border: Flamingo (#D86E89) - Text: Deep Ocean (#002A41) - Icon: Flamingo (#D86E89)

Warning: - Background: Flamingo (#D86E89) at 5% opacity - Border: Flamingo (#D86E89) at 50% - Text: Deep Ocean (#002A41) - Icon: Flamingo (#D86E89)

Success: - Background: Ocean (#1E5E82) at 10% opacity - Border: Ocean (#1E5E82) - Text: Deep Ocean (#002A41) - Icon: Ocean (#1E5E82)

Info: - Background: Sky Blue (#81CCEA) at 10% opacity - Border: Sky Blue (#81CCEA) - Text: Deep Ocean (#002A41) - Icon: Sky Blue (#81CCEA)

Primary Series: Ocean (#1E5E82) Secondary Series: Sky Blue (#81CCEA) Tertiary Series: Deep Ocean (#002A41) Highlight/Accent: Flamingo (#D86E89) Background: Cloud (#EEF9FD) Grid Lines: Sky Blue (#81CCEA) at 20% opacity Text: Deep Ocean (#002A41)

</COMPONENT_GUIDELINES>

<TAILWIND_CONFIG> module.exports = { theme: { extend: { colours: { 'brand': { 'ocean': '#1E5E82', 'flamingo': '#D86E89', 'deep-ocean': '#002A41', 'sky-blue': '#81CCEA', 'cloud': '#EEF9FD', } } } } } </TAILWIND_CONFIG>

---

Fonts & Typography

- Where applicable use the 'Inter' typeface is utilised for headlines, subheadings, and body copy. - Favour bundling the font for offline use over relying on CDNs.

/* CSS */
:root {
  font-family: Inter, sans-serif;
  font-feature-settings: 'liga' 1, 'calt' 1; /* fix for Chrome */
}
@supports (font-variation-settings: normal) {
  :root { font-family: InterVariable, sans-serif; }
}

</INTER_CDN>

---

This information should help you maintain visual consistency with the Mantel brand across diagrams and frontend components.