---
version: "alpha"
name: "Signal"
description: "Signal — Deep navy canvas with bone paper and a single muted-gold accent; institutional with quiet weight. Tipografia Source Serif 4. deep navy primary with warm bone paper alternate and a single muted-gold accent. Ideal para investor deck, consulting deliverable, board presentation. Prompt pronto para IA generativa."
colors:
  primary: "#1c2644"
  secondary: "#232f55"
  tertiary: "#e2dcd0"
  neutral: "#c8a870"
  surface: "#f0ece3"
typography:
  h1:
    fontFamily: Source Serif 4
    fontSize: 2.5rem
    fontWeight: 700
  body-md:
    fontFamily: Source Serif 4
    fontSize: 1rem
    fontWeight: 400
spacing:
  sm: 1.0rem
  md: 2.0rem
  lg: 4.0rem
components:
  button-primary:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.neutral}"
    padding: 12px
---

## Overview

Signal — Deep navy canvas with bone paper and a single muted-gold accent; institutional with quiet weight. Tipografia Source Serif 4. deep navy primary with warm bone paper alternate and a single muted-gold accent. Ideal para investor deck, consulting deliverable, board presentation. Prompt pronto para IA generativa.

- Density: 8/10 — Dense
- Variance: 8/10 — Complex
- Motion: 2/10 — Minimal

- **Style:** Institutional, Weighty, Classical-Serif, Polished
- **Keywords:** Deep navy, muted gold, Source Serif 4, institutional, weighty, polished, trustworthy, scholarly
- **Era:** Timeless Classic
- **Light/Dark:** ✓ Full / ◐ Partial

## Colors

- **Bg** (#1c2644) — Primary surface or dominant color
- **Bg Alt** (#232f55) — Accent highlight, links and focus states
- **Fg** (#e2dcd0) — Secondary accent
- **Accent** (#c8a870) — Accent color, emphasis elements
- **Bg Light** (#f0ece3) — Extended palette, decorative use

## Typography

- **Display / Hero:** Source Serif 4 — Weight 700, tight tracking, used for headline impact
- **Body:** DM Sans — Weight 400, 16px/1.6 line-height, max 72ch per line
- **UI Labels / Captions:** DM Sans — 0.875rem, weight 500, slight letter-spacing
- **Monospace:** IBM Plex Mono — Used for code, metadata, and technical values

Scale:
- Hero: clamp(2.5rem, 5vw, 4rem)
- H1: 2.25rem
- H2: 1.5rem
- Body: 1rem / 1.6
- Small: 0.875rem

## Layout

- **Grid:** CSS Grid primary. Max-width containment: 1280px centered with 1.5rem side padding.
- **Spacing rhythm:** Balanced. Base unit: 0.5rem (8px).
- **Section vertical gaps:** clamp(4rem, 8vw, 8rem).
- **Hero layout:** Split-screen (text left, visual right).
- **Feature sections:** Zig-zag alternating text+image rows. No 3-equal-columns.
- **Mobile collapse:** All multi-column layouts collapse below 768px. No horizontal overflow.
- **z-index contract:** base (0) / sticky-nav (100) / overlay (200) / modal (300) / toast (500).

## Elevation & Depth

display font Source Serif 4 for hero headlines, smooth hover transitions (200-250ms), subtle lift shadows, alternating light/dark sections for rhythm, deep navy full-bleed sections, muted-gold rule accents, bone paper cards, dense grid, compact 1.2rem gaps

- **Physics:** Ease-out curves, 200-300ms duration. Smooth and predictable.
- **Entry animations:** Fade + translate-Y (16px → 0) over 420ms ease-out. Staggered cascades for lists: 80ms between items.
- **Hover states:** Subtle color shift + shadow adjustment over 200ms.
- **Page transitions:** Fade only (200ms).
- **Performance:** Only transform and opacity animated. No layout-triggering properties.

## Shapes

Base corner radius: 4px. See rounded tokens in front matter for the full scale.

## Components

- **Primary Button:** 4px border-radius. Accent color fill. Hover: 8% darken + subtle lift shadow. Active: -1px translate tactile press. Font weight 600. No outer glows.
- **Secondary / Ghost Button:** Outline variant. 1.5px border in muted color. Text in primary color. Hover: subtle background fill.
- **Cards:** 4px corners. Surface background. Subtle shadow (0 2px 12px rgba(0,0,0,0.06)). 1px border stroke.
- **Inputs:** Label above input. 1px border stroke. Focus ring: 2px accent color offset 2px. Error text below in semantic red. No floating labels.
- **Navigation:** Primary surface background. Active item: accent color indicator. Font weight 500 when active.
- **Skeletons:** Shimmer animation matching component dimensions. No circular spinners.
- **Empty States:** Icon-based composition with descriptive text and action button.

## Do's and Don'ts

- No emojis in UI — use icon system only (Lucide, Heroicons)
- No pure black (#000000) — use off-black or charcoal variants
- No oversaturated accent colors (saturation cap: 80%)
- No 3-column equal-width feature layouts — use zig-zag or asymmetric grid
- No `h-screen` — use `min-h-[100dvh]`
- No AI copywriting clichés: "Elevate", "Seamless", "Unleash", "Next-Gen"
- No broken external image links — use picsum.photos or inline SVG
- No generic lorem ipsum in demos

- Do Source Serif 4 display font loaded via Google Fonts
- Do Color palette variables applied consistently
- Do Typography scale: hero clamp(2.5rem,5vw,4rem)
- Do H1 2.25rem
- Do body 1rem/1.6
- Do WCAG AA contrast ratio verified (4.5:1 body text)
- Do Serif typography hierarchy clear (display vs body)
- Do Whitespace generous — section gaps ≥ 5rem
- Do Mobile responsive layout (stack below 768px)

## Use Case

Deck para investidores, Entregável de consultoria, Apresentação para board, Brief jurídico / política, Deck acadêmico, Pitch consultivo, Deck bilíngue EN/CN

<!-- Source: https://designmd.app.br/library/signal · designmd.app -->