# Rectangles Navbar — Section Design Reference

Schema: Design Details SECTION.md v3.2
Source: https://rectangles.fm/
Website: Rectangles
Section ID: 164b1201-b14a-439a-81c8-61af82a837bc
Design Details page: https://designdetails.io/sections/rectangles-fm--home--navbar-164b1201
Status: deterministic evidence captured; editorial AI review pending

## Purpose

This is a navbar section on the Home page. Use the attached crop and measured browser facts to reconstruct its composition. Do not infer unmeasured source values.

## Layout

1440×60px root; flex

## Visual signature

editorial, retro, bold, photographic, skeuomorphic, grunge-distressed treatment at 1440×60px. The crop spans 0–60px of a 10217px page.

## Components

- Navigation Bar
- Hero
- Newsletter Form
- Editorial Card
- Testimonial Card
- Footer
- Floating Sticky Form
- Physical Media Containers

## Evidence note

The geometry, typography, colors, media, and animation parameters below come from saved HTML/CSS/browser evidence when present. Website-level roles are supplied separately. Editorial section judgment remains pending unless the MCP resolves this source ID to a promoted canonical record.

## Build blueprint v3.2

### Purpose and classification

- Canonical type: navigation
- Source type: navbar
- Structure: 1440×60px root; flex
- Layout: 1440×60px root; flex
- Styles: editorial, retro, bold, photographic, skeuomorphic, grunge-distressed
- Components: Navigation Bar, Hero, Newsletter Form, Editorial Card, Testimonial Card, Footer, Floating Sticky Form, Physical Media Containers
- Purpose: navbar section from the Home page of Rectangles.
- Visual signature: rgba(0, 0, 0, 0) with 1440×60px root; flex. Inspect the crop for image and content hierarchy.
- Place on the page: 1 of 7, before Hero (`400d350a-81af-4af1-a4f2-8c282b25d790`)

### Crop and composition

- Crop: 1440×60px; aspect ratio 24:1
- Page bounds: 0–60px of 10217px
- Guidance: Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

### Exact typography evidence

The sectionScale values were measured inside this crop. The siteRoles values explain how those faces function across the source website; they must not replace section measurements.

```json
{
  "sectionScale": [
    {
      "role": "UI/supporting text",
      "family": "Perfume Sans 1",
      "stack": "\"Perfume Sans 1\", \"Perfume Sans 1 Placeholder\", sans-serif",
      "size": "16px",
      "weight": "600",
      "lineHeight": "16px",
      "letterSpacing": "0.3px",
      "sample": "Livestream",
      "element": "a",
      "occurrences": 8,
      "sourceId": "font-4"
    }
  ],
  "siteRoles": [
    {
      "role": "display",
      "size": "234.3px",
      "family": "Perfume Sans 1",
      "source": "computed",
      "traits": "Regular",
      "weight": "600",
      "evidence": "font-8: computed CSS at 1440×1000; AI role: Massive Perfume Sans 1 at 234px used for the decorative footer logo.",
      "sampleId": "font-8",
      "confidence": 1,
      "lineHeight": "128.9px",
      "letterSpacing": "-11.7px"
    },
    {
      "role": "heading",
      "size": "40px",
      "family": "Perfume Sans 1",
      "source": "computed",
      "traits": "Regular",
      "weight": "600",
      "evidence": "font-1: computed CSS at 1440×1000; AI role: Perfume Sans 1 at 40px, used for major section headings like 'Livestreams' and 'Takeaways'.",
      "sampleId": "font-1",
      "confidence": 0.9,
      "lineHeight": "36px",
      "letterSpacing": "-0.4px"
    },
    {
      "role": "body",
      "size": "16px",
      "family": "Forma DJR Display Regular",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-5: computed CSS at 1440×1000; AI role: Forma DJR Display Regular at 16px, used for descriptive paragraphs and subtext.",
      "sampleId": "font-5",
      "confidence": 0.8,
      "lineHeight": "19.2px",
      "letterSpacing": "1px"
    }
  ]
}
```

### Exact color evidence

The section samples record where each computed value was used. Functional roles come from the website-level classifier and remain separate.

```json
{
  "sectionUsage": [
    {
      "value": "#121212",
      "cssValue": "rgb(18, 18, 18)",
      "alpha": 1,
      "appliedAs": [
        "background"
      ],
      "occurrences": 4,
      "sourceId": "color-1"
    },
    {
      "value": "#FFFFFF",
      "cssValue": "rgba(255, 255, 255, 0.8)",
      "alpha": 0.8,
      "appliedAs": [
        "text"
      ],
      "occurrences": 15,
      "sourceId": "color-5"
    }
  ],
  "functionalPalette": [
    {
      "hex": "#121212",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-1: computed rgb(18, 18, 18); AI role: The #121212 dark grey/black serves as the primary background color for the entire page.",
      "sampleId": "color-1",
      "confidence": 1
    },
    {
      "hex": "#FFFFFF",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-3: computed rgb(255, 255, 255); AI role: White (#FFFFFF) is used for the primary headings and body text against the dark canvas.",
      "sampleId": "color-3",
      "confidence": 1
    },
    {
      "hex": "#F5F3D4",
      "name": "surface",
      "role": "surface",
      "source": "computed",
      "evidence": "color-6: computed rgb(245, 243, 212); AI role: The pale yellow #F5F3D4 is used as the background color for the distinctive sticky note newsletter form.",
      "sampleId": "color-6",
      "confidence": 0.9
    },
    {
      "hex": "#000000",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-4: computed rgb(0, 0, 0); AI role: Black (#000000) is used for text placed on top of lighter skeuomorphic elements, like the newsletter form.",
      "sampleId": "color-4",
      "confidence": 0.9
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "CSS border-radius is minimal; perceived roundness comes from the assets themselves.",
  "density": "While text is relatively sparse, the visual density is high due to detailed textures, overlapping objects, and simulated shadows.",
  "evidence": "DOM facts confirm basic black/white color schemes and typography, while screenshots reveal that almost all visual framing and structural elements are achieved through high-fidelity, skeuomorphic imagery rather than CSS styling.",
  "borderStyle": "CSS borders are largely absent, replaced by the visual edges of the skeuomorphic images (e.g., the welded seam of a plastic sleeve).",
  "buttonStyle": "Buttons, such as the 'Join' button on the form, are stark, sharp-cornered rectangles with solid black fills and white text, contrasting with the textured backgrounds.",
  "cornerStyle": "The digital canvas uses sharp corners, but the visual elements rely entirely on the organic, varied corner shapes of the photographed physical objects (rounded folder tabs, jagged torn paper).",
  "contentWidth": "Content is generally centered but uses aggressive asymmetrical positioning, with large visual elements breaking out of standard column constraints.",
  "spacingRhythm": "Sections are separated by large vertical gaps, while content within sections overlaps and ignores strict grid alignment to enhance the physical metaphor."
}
```

### Reconstruction specification

This is the implementation contract for the captured desktop viewport. Prefer section-specific facts here over general website descriptions.

- Root: 1440×60px; flex; padding {"top":"0px","right":"20px","bottom":"0px","left":"20px"}; gap 10px; background rgba(0, 0, 0, 0); radius 0px.
- Observed gaps: 10px.
- Layout containers: 1; cards/surfaces: 0; media elements: 1; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": 1440,
    "captureBounds": {
      "top": 0,
      "bottom": 60,
      "pageHeight": 11133
    }
  },
  "container": {
    "size": "1440×60px",
    "position": "x 0px, y 0px",
    "display": "flex",
    "positionMode": "relative",
    "padding": {
      "top": "0px",
      "right": "20px",
      "bottom": "0px",
      "left": "20px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "10px",
    "columns": "not captured",
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px none rgb(0, 0, 0)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "observedGapsPx": [
      10
    ],
    "representativeContentWidthsPx": []
  },
  "columns": [
    {
      "element": "nav · LivestreamNewsletterTakeawaysCommunityFrom Chris",
      "size": "1440×60px",
      "position": "x 0px, y 0px",
      "display": "flex",
      "template": "not captured",
      "direction": "row",
      "gap": "10px"
    }
  ]
}
```

#### Cards and surfaces

```json
{
  "cards": [],
  "surfaces": {
    "radii": [],
    "borders": [],
    "shadows": []
  }
}
```

#### Media treatment

```json
[
  {
    "element": "img · img",
    "size": "81×18px",
    "position": "x 20px, y 21px",
    "aspectRatio": 4.5,
    "objectFit": "contain",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://framerusercontent.com/images/whYEF16Jw6pKjxiNIglb5UgWyM.svg?scale-down-to=512&width=1300&height=208"
  }
]
```

#### Browser-exposed animation parameters

```json
[]
```

### Measured geometry, surfaces, media, and animation

These raw values come from the saved element map and computed styles. Empty arrays mean the fact was not captured; they are not permission to invent source values.

```json
{
  "schema": "little-details-section-measurements-v1",
  "source": "saved DOM/CSS element and animation maps",
  "capturedAt": "2026-11-02T07:04:08.211Z",
  "viewportWidth": 1440,
  "bounds": {
    "top": 0,
    "bottom": 60,
    "pageHeight": 11133
  },
  "root": {
    "id": "ld-8",
    "tag": "nav",
    "role": null,
    "label": "LivestreamNewsletterTakeawaysCommunityFrom Chris",
    "rect": {
      "x": 0,
      "y": 0,
      "width": 1440,
      "height": 60
    },
    "display": "flex",
    "position": "relative",
    "padding": {
      "top": "0px",
      "right": "20px",
      "bottom": "0px",
      "left": "20px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "10px",
    "columns": null,
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px none rgb(0, 0, 0)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "gapsPx": [
      10
    ],
    "representativeContentWidthsPx": []
  },
  "columns": [
    {
      "id": "ld-8",
      "tag": "nav",
      "role": null,
      "label": "LivestreamNewsletterTakeawaysCommunityFrom Chris",
      "rect": {
        "x": 0,
        "y": 0,
        "width": 1440,
        "height": 60
      },
      "display": "flex",
      "columns": null,
      "direction": "row",
      "gap": "10px"
    }
  ],
  "cards": [],
  "surfaces": {
    "radii": [],
    "borders": [],
    "shadows": []
  },
  "media": [
    {
      "id": "ld-13",
      "tag": "img",
      "role": null,
      "label": "img",
      "rect": {
        "x": 20,
        "y": 21,
        "width": 81,
        "height": 18
      },
      "aspectRatio": 4.5,
      "objectFit": "contain",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://framerusercontent.com/images/whYEF16Jw6pKjxiNIglb5UgWyM.svg?scale-down-to=512&width=1300&height=208",
        "naturalWidth": 206,
        "naturalHeight": 32,
        "alt": ""
      }
    }
  ],
  "animations": [],
  "coverage": {
    "elementsInSection": 13,
    "cards": 0,
    "media": 1,
    "animations": 0
  },
  "limitations": [
    "Values describe the captured desktop viewport and may change at other breakpoints.",
    "Transforms, sticky layers, and virtualized content can make the inferred section root approximate.",
    "Animations include browser-exposed Web Animations API state; CSS or script motion that was inactive at capture time may be absent."
  ]
}
```

### Observed motion

No timestamped authored motion is attached. Use only restrained baseline transitions.

The browser animation records above are deterministic parameters captured from active browser animations. The timestamped observations describe what Gemini saw in the video. Treat them as complementary evidence. When either source is empty or they conflict, state the uncertainty instead of inventing timing or easing.

### Responsive contract

- Measured viewport: 1440px wide.
- Mobile/tablet values: not measured by this section evidence unless a separate capture is explicitly listed.
- Preserve hierarchy and sequence; collapse simultaneous columns only where needed, maintain media aspect ratios, and verify touch targets and text wrapping at target breakpoints.

### Structure versus visual skin

- Preserve: content hierarchy, layout relationships, section rhythm, interaction purpose.
- Adapt: brand colors, font family, copy, imagery, icons, decorative details.
- Rule: Preserve the observed design logic while creating original branding, copy, assets, and implementation details.

### Adaptation and dependencies

- Effort: Not assessed
- What transfers: Documented hierarchy and composition
- Dependencies: None recorded
- Guidance: Adapt the pattern to the new product and content.

### Evidence readiness

- Coverage: 7/7
- Can build: Yes
- Missing facts: timestamped authored motion
- Warning: Buildable with adaptations for these unsupported facts: timestamped authored motion.

### Agent implementation prompt

Create an original navigation section inspired by the design evidence titled “Rectangles Navbar”.

Purpose: navbar section from the Home page of Rectangles.

Structure: 1440×60px root; flex. Source layout label: 1440×60px root; flex. Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

Visual signature to preserve at the pattern level: rgba(0, 0, 0, 0) with 1440×60px root; flex. Inspect the crop for image and content hierarchy.

Components: Navigation Bar, Hero, Newsletter Form, Editorial Card, Testimonial Card, Footer, Floating Sticky Form, Physical Media Containers.

Style direction: editorial, retro, bold, photographic, skeuomorphic, grunge-distressed.

Observed crop: 1440×60px (24:1). Treat this as evidence of composition, not a mandatory output size.

Typography evidence: {"role":"display","size":"234.3px","family":"Perfume Sans 1","source":"computed","traits":"Regular","weight":"600","evidence":"font-8: computed CSS at 1440×1000; AI role: Massive Perfume Sans 1 at 234px used for the decorative footer logo.","sampleId":"font-8","confidence":1,"lineHeight":"128.9px","letterSpacing":"-11.7px"} {"role":"heading","size":"40px","family":"Perfume Sans 1","source":"computed","traits":"Regular","weight":"600","evidence":"font-1: computed CSS at 1440×1000; AI role: Perfume Sans 1 at 40px, used for major section headings like 'Livestreams' and 'Takeaways'.","sampleId":"font-1","confidence":0.9,"lineHeight":"36px","letterSpacing":"-0.4px"} {"role":"body","size":"16px","family":"Forma DJR Display Regular","source":"computed","traits":"Regular","weight":"400","evidence":"font-5: computed CSS at 1440×1000; AI role: Forma DJR Display Regular at 16px, used for descriptive paragraphs and subtext.","sampleId":"font-5","confidence":0.8,"lineHeight":"19.2px","letterSpacing":"1px"}

Color evidence: {"hex":"#121212","name":"canvas","role":"canvas","source":"computed","evidence":"color-1: computed rgb(18, 18, 18); AI role: The #121212 dark grey/black serves as the primary background color for the entire page.","sampleId":"color-1","confidence":1} {"hex":"#FFFFFF","name":"text","role":"text","source":"computed","evidence":"color-3: computed rgb(255, 255, 255); AI role: White (#FFFFFF) is used for the primary headings and body text against the dark canvas.","sampleId":"color-3","confidence":1} {"hex":"#F5F3D4","name":"surface","role":"surface","source":"computed","evidence":"color-6: computed rgb(245, 243, 212); AI role: The pale yellow #F5F3D4 is used as the background color for the distinctive sticky note newsletter form.","sampleId":"color-6","confidence":0.9} {"hex":"#000000","name":"text","role":"text","source":"computed","evidence":"color-4: computed rgb(0, 0, 0); AI role: Black (#000000) is used for text placed on top of lighter skeuomorphic elements, like the newsletter form.","sampleId":"color-4","confidence":0.9}

Typography measured inside this section: {"id":"font-4","family":"Perfume Sans 1","fontStack":"\"Perfume Sans 1\", \"Perfume Sans 1 Placeholder\", sans-serif","weight":"600","size":"16px","lineHeight":"16px","letterSpacing":"0.3px","traits":"capitalize","count":8,"contexts":[{"tag":"a","text":"Livestream","top":22,"property":"font"},{"tag":"a","text":"Newsletter","top":22,"property":"font"},{"tag":"a","text":"Takeaways","top":22,"property":"font"}]}

Colors measured inside this section: {"id":"color-1","hex":"#121212","alpha":1,"cssValue":"rgb(18, 18, 18)","count":4,"contexts":[{"tag":"body","text":":root body { background: var(--token-34db2426-54e1-488f-9616-640c6a7a5f58, rgb(18, 18, 18)); }Livest","top":0,"property":"background"},{"tag":"div","text":"LivestreamNewsletterTakeawaysCommunityFrom Chrishtml body { background: var(--token-60020197-3782-4f","top":0,"property":"background"},{"tag":"input","text":"","top":583,"property":"background"}]} {"id":"color-5","hex":"#FFFFFF","alpha":0.8,"cssValue":"rgba(255, 255, 255, 0.8)","count":15,"contexts":[{"tag":"a","text":"Livestream","top":22,"property":"text"},{"tag":"p","text":"Unpolished, honest conversations,","top":1505,"property":"text"}]}

Exact section measurements from the saved element map: root {"rect":{"x":0,"y":0,"width":1440,"height":60},"padding":{"top":"0px","right":"20px","bottom":"0px","left":"20px"},"gap":"10px","columns":null,"overflow":"visible"}; spacing {"gapsPx":[10],"representativeContentWidthsPx":[]}; surfaces {"radii":[],"borders":[],"shadows":[]}; media [{"tag":"img","rect":{"x":20,"y":21,"width":81,"height":18},"aspectRatio":4.5,"objectFit":"contain","objectPosition":"50% 50%","radius":"0px"}]

Do not invent signature motion. Use only restrained baseline transitions if the product needs them.

Transfer the documented hierarchy and composition rather than source copy or assets.

No explicit dependencies were recorded.

Adapt the pattern to the new product and content.

Use new copy, imagery, branding, and implementation details. Do not reproduce the source website or its proprietary assets.