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Design System: Airbnb

Hermes Agent — Implementation Notes

The original site uses proprietary fonts. For self-contained HTML output, use these CDN substitutes: - Primary: DM Sans | Mono: system monospace stack - Font stack (CSS): font-family: 'DM Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; - Mono stack (CSS): font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace; html <link href="https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap" rel="stylesheet"> Use write_file to create HTML, serve via generative-widgets skill (cloudflared tunnel). Verify visual accuracy with browser_vision after generating.

1. Visual Theme & Atmosphere

Airbnb's website is a warm, photography-forward marketplace that feels like flipping through a travel magazine where every page invites you to book. The design operates on a foundation of pure white (#ffffff) with the iconic Rausch Red (#ff385c) — named after Airbnb's first street address — serving as the singular brand accent. The result is a clean, airy canvas where listing photography, category icons, and the red CTA button are the only sources of color.

The typography uses Airbnb Cereal VF — a custom variable font that's warm and approachable, with rounded terminals that echo the brand's "belong anywhere" philosophy. The font operates in a tight weight range: 500 (medium) for most UI, 600 (semibold) for emphasis, and 700 (bold) for primary headings. Slight negative letter-spacing (-0.18px to -0.44px) on headings creates a cozy, intimate reading experience rather than the compressed efficiency of tech companies.

What distinguishes Airbnb is its palette-based token system (--palette-*) and multi-layered shadow approach. The primary card shadow uses a three-layer stack (rgba(0,0,0,0.02) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 6px, rgba(0,0,0,0.1) 0px 4px 8px) that creates a subtle, warm lift. Combined with generous border-radius (8px–32px), circular navigation controls (50%), and a category pill bar with horizontal scrolling, the interface feels tactile and inviting — designed for browsing, not commanding.

Key Characteristics: - Pure white canvas with Rausch Red (#ff385c) as singular brand accent - Airbnb Cereal VF — custom variable font with warm, rounded terminals - Palette-based token system (--palette-*) for systematic color management - Three-layer card shadows: border ring + soft blur + stronger blur - Generous border-radius: 8px buttons, 14px badges, 20px cards, 32px large elements - Circular navigation controls (50% radius) - Photography-first listing cards — images are the hero content - Near-black text (#222222) — warm, not cold - Luxe Purple (#460479) and Plus Magenta (#92174d) for premium tiers

2. Color Palette & Roles

Primary Brand

Rausch Red (#ff385c): --palette-bg-primary-core, primary CTA, brand accent, active states
Deep Rausch (#e00b41): --palette-bg-tertiary-core, pressed/dark variant of brand red
Error Red (#c13515): --palette-text-primary-error, error text on light
Error Dark (#b32505): --palette-text-secondary-error-hover, error hover

Premium Tiers

Luxe Purple (#460479): --palette-bg-primary-luxe, Airbnb Luxe tier branding
Plus Magenta (#92174d): --palette-bg-primary-plus, Airbnb Plus tier branding

Text Scale

Near Black (#222222): --palette-text-primary, primary text — warm, not cold
Focused Gray (#3f3f3f): --palette-text-focused, focused state text
Secondary Gray (#6a6a6a): Secondary text, descriptions
Disabled (rgba(0,0,0,0.24)): --palette-text-material-disabled, disabled state
Link Disabled (#929292): --palette-text-link-disabled, disabled links

Interactive

Legal Blue (#428bff): --palette-text-legal, legal links, informational
Border Gray (#c1c1c1): Border color for cards and dividers
Light Surface (#f2f2f2): Circular navigation buttons, secondary surfaces

Surface & Shadows

Pure White (#ffffff): Page background, card surfaces
Card Shadow (rgba(0,0,0,0.02) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 6px, rgba(0,0,0,0.1) 0px 4px 8px): Three-layer warm lift
Hover Shadow (rgba(0,0,0,0.08) 0px 4px 12px): Button hover elevation

3. Typography Rules

Font Family

Primary: Airbnb Cereal VF, fallbacks: Circular, -apple-system, system-ui, Roboto, Helvetica Neue
OpenType Features: "salt" (stylistic alternates) on specific caption elements

Hierarchy

Role	Font	Size	Weight	Line Height	Letter Spacing	Notes
Section Heading	Airbnb Cereal VF	28px (1.75rem)	700	1.43	normal	Primary headings
Card Heading	Airbnb Cereal VF	22px (1.38rem)	600	1.18 (tight)	-0.44px	Category/card titles
Card Heading Medium	Airbnb Cereal VF	22px (1.38rem)	500	1.18 (tight)	-0.44px	Lighter variant
Sub-heading	Airbnb Cereal VF	21px (1.31rem)	700	1.43	normal	Bold sub-headings
Feature Title	Airbnb Cereal VF	20px (1.25rem)	600	1.20 (tight)	-0.18px	Feature headings
UI Medium	Airbnb Cereal VF	16px (1.00rem)	500	1.25 (tight)	normal	Nav, emphasized text
UI Semibold	Airbnb Cereal VF	16px (1.00rem)	600	1.25 (tight)	normal	Strong emphasis
Button	Airbnb Cereal VF	16px (1.00rem)	500	1.25 (tight)	normal	Button labels
Body / Link	Airbnb Cereal VF	14px (0.88rem)	400	1.43	normal	Standard body
Body Medium	Airbnb Cereal VF	14px (0.88rem)	500	1.29 (tight)	normal	Medium body
Caption Salt	Airbnb Cereal VF	14px (0.88rem)	600	1.43	normal	`"salt"` feature
Small	Airbnb Cereal VF	13px (0.81rem)	400	1.23 (tight)	normal	Descriptions
Tag	Airbnb Cereal VF	12px (0.75rem)	400–700	1.33	normal	Tags, prices
Badge	Airbnb Cereal VF	11px (0.69rem)	600	1.18 (tight)	normal	`"salt"` feature
Micro Uppercase	Airbnb Cereal VF	8px (0.50rem)	700	1.25 (tight)	0.32px	`text-transform: uppercase`

Principles

Warm weight range: 500–700 dominate. No weight 300 or 400 for headings — Airbnb's type is always at least medium weight, creating a warm, confident voice.
Negative tracking on headings: -0.18px to -0.44px letter-spacing on display creates intimate, cozy headings rather than cold, compressed ones.
"salt" OpenType feature: Stylistic alternates on specific UI elements (badges, captions) create subtle glyph variations that add visual interest.
Variable font precision: Cereal VF enables continuous weight interpolation, though the design system uses discrete stops at 500, 600, and 700.

4. Component Stylings

Buttons

Primary Dark - Background: #222222 (near-black, not pure black) - Text: #ffffff - Padding: 0px 24px - Radius: 8px - Hover: transitions to error/brand accent via var(--accent-bg-error) - Focus: 0 0 0 2px var(--palette-grey1000) ring + scale(0.92)

Circular Nav - Background: #f2f2f2 - Text: #222222 - Radius: 50% (circle) - Hover: shadow rgba(0,0,0,0.08) 0px 4px 12px + translateX(50%) - Active: 4px white border ring + focus shadow - Focus: scale(0.92) shrink animation

Cards & Containers

Background: #ffffff
Radius: 14px (badges), 20px (cards/buttons), 32px (large)
Shadow: rgba(0,0,0,0.02) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 6px, rgba(0,0,0,0.1) 0px 4px 8px (three-layer)
Listing cards: full-width photography on top, details below
Carousel controls: circular 50% buttons

Inputs

Search: #222222 text
Focus: var(--palette-bg-primary-error) background tint + 0 0 0 2px ring
Radius: depends on context (search bar uses pill-like rounding)

White sticky header with search bar centered
Airbnb logo (Rausch Red) left-aligned
Category filter pills: horizontal scroll below search
Circular nav controls for carousel navigation
"Become a Host" text link, avatar/menu right-aligned

Image Treatment

Listing photography fills card top with generous height
Image carousel with dot indicators
Heart/wishlist icon overlay on images
8px–14px radius on contained images

5. Layout Principles

Spacing System

Base unit: 8px
Scale: 2px, 3px, 4px, 6px, 8px, 10px, 11px, 12px, 15px, 16px, 22px, 24px, 32px

Grid & Container

Full-width header with centered search
Category pill bar: horizontal scrollable row
Listing grid: responsive multi-column (3–5 columns on desktop)
Full-width footer with link columns

Whitespace Philosophy

Travel-magazine spacing: Generous vertical padding between sections creates a leisurely browsing pace — you're meant to scroll slowly, like browsing a magazine.
Photography density: Listing cards are packed relatively tightly, but each image is large enough to feel immersive.
Search bar prominence: The search bar gets maximum vertical space in the header — finding your destination is the primary action.

Border Radius Scale

Subtle (4px): Small links
Standard (8px): Buttons, tabs, search elements
Badge (14px): Status badges, labels
Card (20px): Feature cards, large buttons
Large (32px): Large containers, hero elements
Circle (50%): Nav controls, avatars, icons

6. Depth & Elevation

Level	Treatment	Use
Flat (Level 0)	No shadow	Page background, text blocks
Card (Level 1)	`rgba(0,0,0,0.02) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 6px, rgba(0,0,0,0.1) 0px 4px 8px`	Listing cards, search bar
Hover (Level 2)	`rgba(0,0,0,0.08) 0px 4px 12px`	Button hover, interactive lift
Active Focus (Level 3)	`rgb(255,255,255) 0px 0px 0px 4px` + focus ring	Active/focused elements

Shadow Philosophy: Airbnb's three-layer shadow system creates a warm, natural lift. Layer 1 (0px 0px 0px 1px at 0.02 opacity) is an ultra-subtle border. Layer 2 (0px 2px 6px at 0.04) provides soft ambient shadow. Layer 3 (0px 4px 8px at 0.1) adds the primary lift. This graduated approach creates shadows that feel like natural light rather than CSS effects.

7. Do's and Don'ts

Do

Use #222222 (warm near-black) for text — never pure #000000
Apply Rausch Red (#ff385c) only for primary CTAs and brand moments — it's the singular accent
Use Airbnb Cereal VF at weight 500–700 — the warm weight range is intentional
Apply the three-layer card shadow for all elevated surfaces
Use generous border-radius: 8px for buttons, 20px for cards, 50% for controls
Use photography as the primary visual content — listings are image-first
Apply negative letter-spacing (-0.18px to -0.44px) on headings for intimacy
Use circular (50%) buttons for carousel/navigation controls

Don't

Don't use pure black (#000000) for text — always #222222 (warm)
Don't apply Rausch Red to backgrounds or large surfaces — it's an accent only
Don't use thin font weights (300, 400) for headings — 500 minimum
Don't use heavy shadows (>0.1 opacity as primary layer) — keep them warm and graduated
Don't use sharp corners (0–4px) on cards — the generous rounding (20px+) is core
Don't introduce additional brand colors beyond the Rausch/Luxe/Plus system
Don't override the palette token system — use --palette-* variables consistently

8. Responsive Behavior

Breakpoints

Name	Width	Key Changes
Mobile Small	<375px	Single column, compact search
Mobile	375–550px	Standard mobile listing grid
Tablet Small	550–744px	2-column listings
Tablet	744–950px	Search bar expansion
Desktop Small	950–1128px	3-column listings
Desktop	1128–1440px	4-column grid, full header
Large Desktop	1440–1920px	5-column grid
Ultra-wide	>1920px	Maximum grid width

Note: Airbnb has 61 detected breakpoints — one of the most granular responsive systems observed, reflecting their obsession with layout at every possible screen size.

Touch Targets

Circular nav buttons: adequate 50% radius sizing
Listing cards: full-card tap target on mobile
Search bar: prominently sized for thumb interaction
Category pills: horizontally scrollable with generous padding

Collapsing Strategy

Listing grid: 5 → 4 → 3 → 2 → 1 columns
Search: expanded bar → compact bar → overlay
Category pills: horizontal scroll at all sizes
Navigation: full header → mobile simplified
Map: side panel → overlay/toggle

Image Behavior

Listing photos: carousel with swipe on mobile
Responsive image sizing with aspect ratio maintained
Heart overlay positioned consistently across sizes
Photo quality adjusts based on viewport

9. Agent Prompt Guide

Quick Color Reference

Background: Pure White (#ffffff)
Text: Near Black (#222222)
Brand accent: Rausch Red (#ff385c)
Secondary text: #6a6a6a
Disabled: rgba(0,0,0,0.24)
Card border: rgba(0,0,0,0.02) 0px 0px 0px 1px
Card shadow: full three-layer stack
Button surface: #f2f2f2

Example Component Prompts

"Create a listing card: white background, 20px radius. Three-layer shadow: rgba(0,0,0,0.02) 0px 0px 0px 1px, rgba(0,0,0,0.04) 0px 2px 6px, rgba(0,0,0,0.1) 0px 4px 8px. Photo area on top (16:10 ratio), details below: 16px Airbnb Cereal VF weight 600 title, 14px weight 400 description in #6a6a6a."
"Design search bar: white background, full card shadow, 32px radius on container. Search text at 14px Cereal VF weight 400. Red search button (#ff385c, 50% radius, white icon)."
"Build category pill bar: horizontal scrollable row. Each pill: 14px Cereal VF weight 600, #222222 text, bottom border on active. Circular prev/next arrows (#f2f2f2 bg, 50% radius)."
"Create a CTA button: #222222 background, white text, 8px radius, 16px Cereal VF weight 500, 0px 24px padding. Hover: brand red accent."
"Design a heart/wishlist button: transparent background, 50% radius, white heart icon with dark shadow outline."

Iteration Guide

Start with white — the photography provides all the color
Rausch Red (#ff385c) is the singular accent — use sparingly for CTAs only
Near-black (#222222) for text — the warmth matters
Three-layer shadows create natural, warm lift — always use all three layers
Generous radius: 8px buttons, 20px cards, 50% controls
Cereal VF at 500–700 weight — no thin weights for any heading
Photography is hero — every listing card is image-first