Reefline Design System

This document outlines the UI/UX patterns and design principles used in the Reefline dashboard. Use these patterns when creating new pages or components to ensure consistency.

1. Core Principles

• •Minimalist & Border-Focused: We rely heavily on borders (border-border) to define structure rather than heavy shadows or distinct background colors for cards.
• •Subtle Depth: We use very subtle gradients (from-primary/5) and opacities to indicate active states or hover effects, avoiding flat solid colors for interactive elements.
• •Data Density: The interface is designed for power users (DevOps/Engineering), favoring dense information display (tables, lists, grids) with text-sm or text-xs sizing.
• •Visual Polish: Use of backdrop-blur, custom scrollbars, and DotPattern backgrounds adds a premium feel.

2. Layout Patterns

A. Sidebar-Detail Layout

Used in Settings and Overview pages.

• •Structure:
  • •Container: flex flex-col h-screen (or h-[calc(100vh-offset)]).
  • •Sidebar: Fixed width (w-64 or w-56), border-r, bg-card/30 or transparent.
  • •Main Content: flex-1, overflow-y-auto.
  • •Scrollbars: Always use the custom transparent scrollbar utility.

<div className="flex h-full">
  <aside className="w-64 border-r border-border shrink-0 overflow-y-auto [&::-webkit-scrollbar]:w-1.5 ...">
    {/* Navigation or Filters */}
  </aside>
  <main className="flex-1 overflow-y-auto [&::-webkit-scrollbar]:w-1.5 ...">
    {/* Page Content */}
  </main>
</div>

B. "Grid System" Layout

Used in Integrations page.

• •Concept: A grid of cards that visually merge into a table-like structure.
• •Implementation: Cards use rounded-none, border-0, border-r, and border-b. The container handles the outer boundaries (e.g., border-l, border-t).

// Container
<div className="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 border-l border-t border-border">
  {items.map(item => <Card key={item.id} />)}
</div>

// Integration Card Component
<Card className="rounded-none border-0 border-r border-b border-border shadow-none ...">
  {/* Content */}
</Card>

3. Component Patterns

A. Page Header

Standardized header for all pages.

• •Title: text-3xl (or 2xl), font-medium, tracking-tight.
• •Gradient Effect: bg-gradient-to-br from-foreground to-foreground/70 bg-clip-text text-transparent.
• •Subtitle: text-muted-foreground.

<div className="p-4 md:p-6 border-b border-border">
  <h1 className="text-3xl font-medium tracking-tight bg-gradient-to-br from-foreground to-foreground/70 bg-clip-text text-transparent">
    Page Title
  </h1>
  <p className="text-muted-foreground mt-1">
    Page description goes here.
  </p>
</div>

B. Section Header with Dotted Background

Used to separate sections in Settings or Sidebars.

• •Component: Uses DotPattern (from @/components/ui/dot-pattern).
• •Style: border-b border-border, light background (bg-muted/5).

function SectionHeader({ title, icon: Icon }) {
  return (
    <div className="relative border-b border-border overflow-hidden bg-muted/5">
       <DotPattern className="absolute inset-0 fill-neutral-400/20" />
       <div className="relative z-10 flex items-center gap-2 px-4 py-2">
         <Icon className="h-4 w-4 text-muted-foreground" />
         <h3 className="text-sm font-medium">{title}</h3>
       </div>
    </div>
  )
}

C. Sidebar Navigation Item

Used for switching tabs or sections.

• •States:
  • •Idle: text-muted-foreground.
  • •Hover: text-foreground, subtle border color change.
  • •Active: bg-primary/[0.03], text-foreground, border-primary highlight (often a left border or icon box highlight).

D. Custom Scrollbar

Apply these utility classes to any scrollable element (overflow-y-auto):

[&::-webkit-scrollbar]:w-1.5
[&::-webkit-scrollbar-track]:bg-transparent
[&::-webkit-scrollbar-thumb]:bg-accent/30
[&::-webkit-scrollbar-thumb]:rounded-full
[&::-webkit-scrollbar-thumb:hover]:bg-muted-background/50

4. Visual Assets & Icons

• •Icons: Lucide React (lucide-react). Size h-4 w-4 is standard for UI elements, h-5 w-5 for primary actions.
• •Colors:
  • •primary: Brand color (often used with low opacity for backgrounds).
  • •muted-foreground: Secondary text.
  • •border: Standard borders.
  • •destructive: Error states or dangerous actions.

5. Examples

Settings Page Pattern

Refer to: frontend/dashboard/src/pages/settings/settings.page.tsx

• •Features "Danger Zone" pattern (red background/border).
• •Form layouts with max-w constraints or grid-cols-2.

Overview List Pattern

Refer to: frontend/dashboard/src/pages/overview/overview.page.tsx

• •Features "List Row" design for dense data items.
• •Horizontal flex layout with specific widths for columns (min-w-[300px], w-24, etc.).