Sea Haven Design System
Visual foundation for seaheven.front, aligned with seahaven.desing tokens and IrisLoan.Admin integration patterns (centralized CSS, @theme inline, cn()).
Stack
- MUI-only — no Radix/shadcn; MUI is the sole component library
- Tailwind v4 — semantic utility classes from CSS tokens
- Fonts — Montserrat (headings), DM Sans (body), JetBrains Mono (code) via
@fontsource
Token source of truth
| File |
Purpose |
src/styles/theme.css |
All :root CSS variables + @theme inline Tailwind aliases |
src/styles/fonts.css |
@fontsource imports |
src/styles/typography.css |
Base html, body, h1–h6, .text-caption, .text-label |
src/styles/motion.css |
--duration-fast, --duration-normal, --ease-default |
src/styles/globals.css |
Entry: imports all above + @custom-variant dark |
Key tokens
Brand & surfaces
| Token |
Value |
Usage |
--primary |
#1c75bc |
Buttons, links, focus ring |
--primary-hover |
#155a92 |
Hover states |
--foreground |
#262262 |
Primary text |
--background |
#ffffff |
Cards, inputs |
--color-bg-page |
#f9fafb |
Page background |
--border |
#dfe3ea |
Dividers, outlines |
--muted-foreground |
#58595b |
Secondary text |
Layout
| Token |
Value |
--spacing-sidebar |
220px |
--spacing-sidebar-collapsed |
56px |
--spacing-topbar |
64px |
Typography scale
| Token |
Size |
--text-xs |
11px |
--text-sm |
12px |
--text-base-sm |
13px |
--text-base |
14px |
--text-md |
16px |
--text-lg |
18px |
--text-xl |
22px |
--text-2xl |
28px |
Elevation
| Token |
Usage |
--shadow-sm |
Cards, subtle depth |
--shadow-md |
Dropdowns, panels |
--shadow-lg |
Dialogs, modals |
Work order badges (immutable)
Type, status, and completion-doc tokens (--type-*, --status-*, --doc-*) must not be changed — see src/components/domain/.
Typography hierarchy
| Element |
Font |
Weight |
Size |
h1 |
Montserrat |
800 |
28px |
h2 |
Montserrat |
700 |
22px |
h3 |
Montserrat |
600 |
18px |
h4–h6 |
Montserrat |
600 |
16–13px |
| Body |
DM Sans |
400 |
14px |
.text-caption |
DM Sans |
400 |
12px |
.text-label |
DM Sans |
600 |
11px uppercase |
MUI typography variants in src/lib/theme/mui-theme.ts mirror this hierarchy.
MUI + Tailwind usage
Prefer themed MUI in forms and data tables
MUI components inherit Sea Haven styling via mui-theme.ts overrides (Button, TextField, Table, Chip, Paper, Dialog, Alert).
Prefer semantic Tailwind in layout shells
<div className="bg-background text-foreground border-border" />
<div className="text-muted-foreground" />
<div className="bg-primary text-primary-foreground" />
Compose classes with cn()
import { cn } from "@/lib/utils";
<div className={cn("flex gap-2", isActive && "bg-sidebar-accent")} />;
Shared UI wrappers
| Component |
Path |
Pattern |
Button |
components/ui/button.tsx |
MUI Button + variant presets |
Badge |
components/ui/badge.tsx |
MUI Chip |
PageHeader |
components/ui/page-header.tsx |
PATTERN_001 |
EmptyState |
components/ui/empty-state.tsx |
PATTERN_003 |
FormField |
components/ui/form-field.tsx |
PATTERN_004 |
Domain badges
| Component |
Path |
TypeBadge |
components/domain/type-badge.tsx |
StatusBadge / WorkOrderStatusBadge |
components/domain/status-badge.tsx |
DocBadge |
components/domain/doc-badge.tsx |
Legacy → Sea Haven mapping
| Legacy |
Sea Haven |
Consumption |
#0c4f6f / --blue-main |
--primary (#1c75bc) |
MUI primary.main, bg-primary |
#083a52 / --blue-dark |
--primary-hover |
Button hover |
#f4f6f7 / --bg |
--color-bg-page |
Body, page shell |
#d9dde0 / --border |
--border |
Dividers, inputs |
#fbfbfb sidebar |
--color-sidebar-bg |
App sidebar |
| Segoe UI 13px |
DM Sans 14px |
Body typography |
| Bootstrap calendar colors |
--primary, --success, etc. |
calendar-utils.ts |
#1a3a5c login header |
--color-header-bg-start |
Login branding strip |
Dark mode
@custom-variant dark (&:is(.dark *)) is configured in globals.css. Full dark token set is a future enhancement; light mode is the current default.
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