--- version: alpha name: deno.com description: "Light product system built on #ffffff with #70ffaf as the primary CTA accent. Type anchored in Inter at 72px / weight 700. Extracted automatically from https://deno.com/ — rendered styles via getComputedStyle() + CSS custom properties (token-only values may not be painted)." narrative: | deno.com is built on a mid-dark canvas (oklab(0.999994 0.0000455678 0.0000200868 / 0.9)). The system uses rgb(112, 255, 175) as the accent for primary actions and brand signals. Sharp 0px corners on CTAs — architectural restraint, engineering precision alongside Inter as the primary typeface. A layered elevation system (7 distinct shadows) building a clear front-to-back hierarchy. Motion is a first-class concern — 22 keyframe animations plus transition-driven interactions. colors: background: "#ffffff" surface-1: "#f2f0df" surface-2: "#f5f5f5" ink-muted: "#172723" ink-subtle: "#656d76" primary: "#70ffaf" on-primary: "#111111" primary-hover: "#405274" hairline: "#868789" primary-focus: "#ae01ff" semantic-error: "#d1242f" typography: display-xl: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 72px fontWeight: 700 lineHeight: 1.1 letterSpacing: -1.8px display-md: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 36px fontWeight: 700 lineHeight: 1.1 letterSpacing: -0.9px headline: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 20px fontWeight: 700 lineHeight: 1.1 letterSpacing: -0.5px body: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 16px fontWeight: 400 lineHeight: 1.5 letterSpacing: 0 caption: fontFamily: "Menlo, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 13.6px fontWeight: 400 lineHeight: 1.45 letterSpacing: 0 button: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 18px fontWeight: 700 lineHeight: 2 letterSpacing: 0 rounded: none: 0px xs: 4px sm: 8px md: 12px lg: 9997px xl: 9999px pill: 9997px spacing: xxs: 2px xs: 4px sm: 8px md: 24px lg: 48px xl: 56px xxl: 144px components: button-outline: backgroundColor: "transparent" textColor: "{colors.ink-muted}" typography: "{typography.body}" rounded: "{rounded.xs}" padding: 4px 8px button-ghost: backgroundColor: "transparent" textColor: "#000000" typography: "{typography.button}" rounded: "{rounded.xs}" padding: 0px 8px button-ghost-2: backgroundColor: "transparent" textColor: "#56575a" typography: "{typography.caption}" rounded: "{rounded.xl}" padding: 12px 16px input-text-input: backgroundColor: "transparent" textColor: "#000000" typography: "{typography.body}" rounded: "{rounded.sm}" padding: 4px 4px 4px 32px navigation-main-nav: backgroundColor: "{colors.background}" typography: "{typography.button}" rounded: "{rounded.none}" cta-banner-full-width-cta: backgroundColor: "#66c2ff" textColor: "#002633" typography: "{typography.button}" rounded: "{rounded.sm}" padding: 12px 20px code-block-inline-code--pre: backgroundColor: "transparent" textColor: "#000000" typography: "{typography.body}" rounded: "{rounded.none}" padding: 32px 16px extracted_at: "2026-06-11T06:08:52.932Z" completeness: 99 scoreVersion: "v2" --- # Design System — deno.com > Extracted automatically by Prism from https://deno.com > Date: 2026-06-11 > Viewport: Desktop 1440x900 + Mobile 390x844 > Values are extracted, not hand-written: rendered styles via getComputedStyle() + colors declared in CSS custom properties (token-only values are marked `(token)` and may not be painted). ## 0. Design DNA **Density**: sparse  |  **Motion**: expressive  |  **Weight**: heavy  |  **Aesthetic**: soft-rounded | Dimension | Value | Signal | |---|---|---| | Canvas | neutral | `#ffffff` | | Type posture | sans-led (Inter) | "All your favorite tools, built" | | Color assertion | dual-accent | #70ffaf | | Whitespace | sparse | section rhythm 64px | | Interaction | expressive | 22 keyframes, 18 transitions | | Radius language | soft-pill | from token scale | **Prism fingerprint**: `neutral-canvas · sans-display · dual-accent · soft-pill · expressive-motion` > **🤖 TL;DR for AI agents** (read this first — saves you scanning the full doc): > > - **Canvas**: `oklab(0.999994 0.0000455678 0.0000200868 / 0.9)` is the page background. Every component composits against this. > - **Accent**: `rgb(112, 255, 175)` for primary CTAs ONLY. Never decorative. > - **Body type**: 16px (token: `typography.body`). Default for ALL text not in a heading role. > - **Section rhythm**: 64px between major bands. Card padding: 48px. > - **Default radius**: 8px on buttons/inputs. Pills (`9999px`) only for icon-buttons or status chips. > > **Before generating UI**: import this DESIGN.md, scan §2 (Color Palette) + §4 (Components) + §10 (Agent Guide). Skip §11–12 unless extending. ## 1. Visual Theme & Atmosphere **Signature:** a gradient wash in the hero. This is the brand's most recognizable visual — reproduce it, don't replace it with a generic card or flat panel. deno.com uses a pure-white canvas (`#ffffff`), letting typography, color and imagery carry the visual weight. Typography is anchored in **Inter**, deployed with OpenType features enabled globally (`"ss12"`). These aren't decorative — they're load-bearing: without them, the typeface reverts to its generic state and the design loses its specific texture. The weight scale rejects the standard 100/200/.../900 ladder in favor of custom values (max **700** in this system) — a deliberate signal that this design system is precisely tuned, not assembled from defaults. Negative letter-spacing at display sizes (-1.8px at 72px) compresses headlines into engineered blocks, dense and precise. Body text reads in Pure Black (`#000000`) (contrast ratio 21.0:1, well above WCAG AA). **Runtime** (`#70ffaf`) is the single high-saturation color in the system — it earns its presence only on interactive elements, making CTAs and links the unmistakable focal points against the otherwise neutral palette. Elevation is built from multi-layer shadow stacks (7 distinct) — each combines several blurred layers at varying offsets to build a clear front-to-back hierarchy. Border radius varies from pill-shaped (fully rounded) to moderately rounded elements, creating visual rhythm. Motion design uses smooth easing curves for polished state transitions. The site uses a variable font with CASL + CRSV + MONO + SLNT axes, enabling precise weight/width control across the type hierarchy. **Key Characteristics:** - Background: White (`#ffffff`) - Primary typeface: Inter - Accent: Runtime (`#70ffaf`) - Display: 72px weight 700, letter-spacing -1.8px - Shadow system: 7 distinct elevation levels - Custom fonts loaded: Inter, Moranga, Recursive ## 2. Color Palette & Roles ### Background & Surface - **White** (`#ffffff`): Page background (primary) - **Canvas Default Transparent** (`transparent`): Surface / elevated background (CSS var) - **Canvas Subtle** (`#f6f8fa`): Surface / elevated background (CSS var) - **Beige** (`#f2f0df`): Surface / elevated background - **Off-White** (`#f5f5f5`): Surface / elevated background ### Text & Content - **Pure Black** (`#000000`): Primary body text - **Fg Muted** (`#656d76`): Text (CSS var) - **Fg Default** (`#1f2328`): Text (CSS var) - **Warm Brown** (`#172723`): Secondary text - **Black** (`#0b0d11`): Secondary text ### Accent & Interactive - **Accent Emphasis** (`#0969da`): Accent / interactive (CSS var) - **Runtime** (`#70ffaf`): Interactive / accent - **Slate Gray** (`#596886`): Interactive / accent - **Slate** (`#405274`): Interactive / accent - **Cobalt Blue** (`#0550ae`): Interactive / accent - **#6639ba** (`#6639ba`): Interactive / accent - **Crimson** (`#cf222e`): Interactive / accent ### Border & Divider - **Border Muted** (`#d8dee4`): Border (CSS var) - **Border Default** (`#d0d7de`): Border (CSS var) - **Silver** (`#d5cec9`): Borders / dividers - **Whitesmoke** (`#e5eaea`): Borders / dividers - **Light Blue** (`#cbd1e1`): Borders / dividers - **#d2dde2** (`#d2dde2`): Borders / dividers ### Full Extracted Palette **59 colors rendered on the page** + **33** more declared in design tokens (CSS custom properties — not necessarily painted). (23 categorized above + 69 additional below.) Rendered values are read via `getComputedStyle()`; token values come from CSS variable declarations. Third-party logo colors are filtered out. - `#868789` — Slate Grey - `#9ea0a5` — Grey - `#56575a` — Charcoal - `#25272b` — Near-Black - `#121417` — Offblack - `#0a3069` — #0a3069 - `#953800` — Chocolate - `#191b1f` — Near-Black - `#ffd601` — Gold - `#01ff67` — #01ff67 - `#01c2ff` — Deploy - `#db01ff` — #db01ff - `#57606a` — Slate - `#f8f9fc` — Off-White - `#0a0e1c` — Jet Black - `#f1f3f9` — Off-White - `#a8b2c8` — Sage - `#0077cc` — M Tricolor Blue - `#475269` — Slate - `#ffdb1e` — Fresh - `#ffe600` — Gold - `#41b883` — #41b883 - `#34495e` — Slate - `#ff5b11` — Bright Orange - `#ff9758` — Tangerine - `#00dc82` — #00dc82 - `#ff3e00` — Bright Orange - `#3ecc5f` — #3ecc5f - `#44d860` — #44d860 - `#ffff50` — #ffff50 - `#61dafb` — #61dafb - `#17191e` — Near-Black - *…+37 more in `raw-css.json` (`desktop.allColors`).* ### CSS Custom Properties (Design Tokens) **Shadow Token** - `--tw-inset-shadow-alpha`: `100%` - `--tw-inset-ring-shadow`: `0 0 #0000` - `--tw-inset-shadow`: `0 0 #0000` - `--tw-shadow-alpha`: `100%` **Font Weight Token** - `--text-heading-sm--font-weight`: `bold` - `--font-weight-bold`: `700` - `--text-heading-lg--font-weight`: `bold` - `--text-heading-md--font-weight`: `bold` **Secondary Color** - `--color-subhosting`: `#66c2ff` - `--color-subhosting-dark`: `#004166` **Primary Brand Color** - `--color-accent-emphasis`: `#0969da` - `--color-accent-fg`: `#0969da` **Warning** - `--color-yellow-400`: `oklch(85.2% .199 91.936)` - `--color-yellow-50`: `oklch(98.7% .026 102.212)` - `--color-yellow-200`: `oklch(94.5% .129 101.54)` - `--color-yellow-600`: `oklch(68.1% .162 75.834)` **Spacing Token** - `--text-pullquote--letter-spacing`: `-.025em` - `--tw-space-x-reverse`: `0` - `--text-heading-3xl--letter-spacing`: `-.025em` - `--text-heading-md--letter-spacing`: `-.025em` **Success** - `--color-green-500`: `oklch(72.3% .219 149.579)` - `--color-green-600`: `oklch(62.7% .194 149.214)` - `--color-green-400`: `oklch(79.2% .209 151.711)` - `--color-green-200`: `oklch(92.5% .084 155.995)` **Border Radius Token** - `--radius-sm`: `.25rem` - `--radius-2xl`: `1rem` - `--radius-md`: `.375rem` - `--radius-lg`: `.5rem` **Motion Token** - `--default-transition-duration`: `.15s` - `--default-transition-timing-function`: `cubic-bezier(.4,0,.2,1)` **Background** - `--color-canvas-default-transparent`: `rgba(255,255,255,0)` - `--color-canvas-subtle`: `#f6f8fa` - `--color-canvas-default`: `#fff` **Border** - `--color-border-muted`: `#d8dee4` - `--color-border-default`: `#d0d7de` **Error / Destructive** - `--color-red-200`: `oklch(88.5% .062 18.334)` - `--color-red-400`: `oklch(70.4% .191 22.216)` - `--color-red-800`: `oklch(44.4% .177 26.899)` - `--color-red-500`: `oklch(63.7% .237 25.331)` **Font Family Token** - `--default-mono-font-family`: `Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace` **Other tokens** - `--color-purple-200`: `oklch(90.2% .063 306.703)` - `--color-runtime`: `#70ffaf` - `--color-zinc-100`: `oklch(96.7% .001 286.375)` - `--text-heading-3xl`: `clamp(3rem,calc(2.5rem + 3vw),6.25rem)` - `--color-prettylights-syntax-markup-deleted-bg`: `#ffebe9` - `--color-orange-600`: `oklch(64.6% .222 41.116)` - `--color-prettylights-syntax-markup-inserted-bg`: `#dafbe1` - `--text-heading-lg`: `clamp(1rem,calc(.75rem + 3vw),2.25rem)` ## 3. Typography Rules ### Font Families - **Primary**: `Inter` - **Secondary**: `Moranga` - **Font 3**: `Recursive` - **Font 4**: `Menlo` ### Custom Fonts Loaded - **Inter** weight 400 (normal) - **Inter** weight 700 (normal) - **Moranga** weight normal (normal) - **Moranga** weight bold (normal) - **Recursive** weight 300 1000 (normal) ### Typography Hierarchy | Role | Font | Size | Weight | Line Height | Letter Spacing | Notes | |------|------|------|--------|-------------|----------------|-------| | Display Hero | Inter | 72px | 700 | 1.1 | -1.8px | Main headline (h1) | | Sub-heading | Inter | 36px | 700 | 1.1 | -0.9px | Third-level heading (h3) | | Label Heading | Inter | 20px | 700 | 1.1 | -0.5px | Small heading (H4) | | Button Large | Inter | 18px | 700 | 2 | normal | Button label (18px) | | Button Large | Inter | 18px | 400 | 2 | normal | Button label (18px) | | Body | Inter | 16px | 400 | 1.5 | normal | Standard reading text | | Button Large | Inter | 16px | 700 | 1.5 | normal | Button label (16px) | | Caption / Badge | Menlo | 13.6px | 400 | 1.45 | normal | small text (13.6px) | ### Font Weight Scale CSS custom properties define 4 explicit weight steps: - `--font-weight-normal`: `400` — Regular - `--font-weight-medium`: `500` — Medium - `--font-weight-semibold`: `650` — SemiBold (custom, ~600) - `--font-weight-bold`: `700` — Bold ### Full Font Size Scale Sizes detected in the design (descending): `72px`, `44px`, `36px`, `28px`, `27px`, `20px`, `18px`, `16px`, `14px`, `13.60px`, `12px`, `10px` > 6 size(s) detected outside the sampled hierarchy (44px, 28px, 27px, 14px, 12px, 10px). These appear on elements not in the sampled set — likely additional display sizes, marketing-section overrides, or third-party-widget styles. ### OpenType & Variable Font Features The typography uses these OpenType features intentionally — this is a sophisticated type system, not a default fallback: - **ligatures** — common letter pairs replaced with refined glyphs (fi, fl, etc.) **Clone instruction:** Enable these in your CSS: ```css body { font-feature-settings: "ss12", "liga"; } ``` **Variable font axes:** - CASL axis - CRSV axis - MONO axis - SLNT axis ## 4. Component Stylings ### Buttons **Outline** - Background: `transparent` - Text: `#172723` `{colors.ink-muted}` - Padding: 4px 8px - Radius: 6px - Border: 2px solid rgb(23, 39, 35) - Font: 16px weight 700 - Use: Secondary action with border - Focus: outline: `rgb(174, 1, 255) solid 2px` **Ghost** - Background: `transparent` - Text: `#000000` - Padding: 0px 8px - Radius: 6px - Font: 18px weight 700 - Use: Subtle action, toolbar, nav button - Focus: outline: `rgb(174, 1, 255) solid 2px` **Ghost** - Background: `transparent` - Text: `#56575a` - Padding: 12px 16px - Radius: 9999px - Font: 14px weight 400 - Use: Subtle action, toolbar, nav button - Focus: outline: `rgb(174, 1, 255) solid 2px` ### Inputs & Forms **Text Input** - Background: `transparent` - Text: `#000000` - Padding: 4px 4px 4px 32px - Radius: 8px - Border: 1px solid rgb(134, 135, 137) - Font: 16px weight 400 - Use: Text fields, search inputs ### Navigation **Main Nav** - Background: `#ffffff` `{colors.background}` - Padding: 0px - Radius: none - Shadow: `rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.1) 0px 1px 2px -1px` - Font: 18px weight 400 - Use: Fixed/sticky flex nav — N/A items ### CTA Banners **Full-width CTA** - Background: `#66c2ff` - Text: `#002633` - Padding: 12px 20px - Radius: 8px - Font: 18px weight 700 - Use: Full-width conversion strip with headline + button - Focus: outline: `rgb(174, 1, 255) solid 2px` ### Code Blocks **Inline Code / Pre** - Background: `transparent` - Text: `#000000` - Padding: 32px 16px - Radius: 0px - Font: 16px weight 400 — Menlo - Use: Code samples, CLI commands, syntax highlighting blocks ## 4b. Component Behaviors (State Matrix) ### Interaction State Narrative *State transitions extracted via Playwright simulation — exact values in the YAML matrix below.* ```yaml component-behaviors: button: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(23, 39, 35)" focus: bg: "transparent" fg: "inherit" input: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(0, 0, 0)" border: "1px solid rgb(134, 135, 137)" link: default: bg: "rgb(255, 255, 255)" fg: "rgb(0, 0, 0)" navLink: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(0, 0, 0)" badge: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(31, 35, 40)" footerLink: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(112, 255, 175)" ``` **Agent usage**: Validate generated components against this matrix. If your output's `:hover` state changes properties not listed here, you are off-brand. ## 4c. Component Vocabulary (Closed System) *This brand uses ONLY the following component vocabulary. Introducing new variants without justification breaks the system's tonal coherence.* ### Buttons - **2 shape(s)** in this system: `Outline`, `Ghost` - **DO NOT introduce new buttons variants** without justification ### Inputs & Forms - **1 shape(s)** in this system: `Text Input` - **DO NOT introduce new inputs & forms variants** without justification ### Navigation - **1 shape(s)** in this system: `Main Nav` - **DO NOT introduce new navigation variants** without justification ### CTA Banners - **1 shape(s)** in this system: `Full-width CTA` - **DO NOT introduce new cta banners variants** without justification ### Code Blocks - **1 shape(s)** in this system: `Inline Code / Pre` - **DO NOT introduce new code blocks variants** without justification ## 5. Layout Principles ### Layout Type **top-nav + content** ### Grid Single column, centered content ### Max Width 1080px ### Spacing System Generous spacing — editorial breathing room | Token | Value | |-------|-------| | xxs | 2px | | xs | 4px | | sm | 8px | | md | 24px | | base | 32px | | lg | 48px | | xl | 56px | | 2xl | 64px | | 3xl | 144px | ### Border Radius Scale | Name | Value | Use | |------|-------|-----| | None | 0px | No rounding | | Xs | 4px | Tiny corners (badges, micro elements) | | Sm | 8px | Buttons, inputs, small elements | | Md | 12px | Cards, containers | | Lg | 9997px | Large rounded elements, pill segments | | Xl | 9999px | Category strips, featured containers | | Full | 9997px | Pills, avatars, circular elements | ### Shape Language | Component | Border Radius | |-----------|---------------| | Buttons | `6px` | | Inputs & Forms | `8px` | | Navigation | `none` | | CTA Banners | `8px` | | Code Blocks | `0px` | | Page Body | `0px` | | Primary Input | `8px` | **Shape Personality**: Moderate Rounding — Medium corners (4–12px). Modern SaaS standard, neither sharp nor pill. **Full Radius Spectrum**: 4px, 6px, 7px, 8px, 12px, full/pill, full/pill (from `allBorderRadii` scan) ## 5b. Spacing Rhythm Names **Measured section padding**: bands use ~144px internal vertical padding (up to 144px) — **very airy / premium**. (Distinct from the gap *between* sections above.) Reproduce this generous vertical breathing room; cramped spacing is the #1 tell of a cheap clone. *Named spacing tokens with explicit use cases. Use these names in YOUR code instead of raw pixels for consistency.* | Name | Value | Use case | |------|-------|----------| | **hero** | `144px` | Top/bottom of full-bleed hero sections | | **section** | `56px` | Between major bands (color change, content shift) | | **subsection** | `48px` | Within a section, between content groups | | **card** | `24px` | Card padding, list-item spacing | | **compact** | `8px` | Form fields, tight clusters, badge padding | | **micro** | `4px` | Icon-text gap, tag inner padding | **Agent rule**: NEVER hardcode raw pixel values for spacing in generated UI. Always reference these named tokens (`spacing-rhythm.section`, etc.). ## 5c. Widget & Structure Library Structural patterns extracted from the page DOM — these are the **blueprints** an agent should follow to reproduce the page architecture (not just CSS values). **5/8 structural patterns detected.** ### Hero Pattern - **Composition:** left-aligned — - **Viewport coverage:** 386px tall (not full-viewport) - **Heading:** "Uncomplicate JavaScript" — 72px left-aligned - **CTAs:** 2 (primary: "Docs") - **Clone instruction:** Reproduce the **left-aligned** layout. Use the heading font-size token at the documented size. Pair the centered text with the hero’s decorative visual (gradient / SVG / hero image — see §9b), not bare text. ### Navigation Pattern - **Position:** static (scrolls with page) - **Layout:** logo-left-links-left — Logo and links both on the left (CTAs typically right) - **Height:** 48px - **Logo:** ✓ present - **Nav links:** 3 primary items - **CTAs in nav:** 0 (no buttons — links only) - **Search:** ✓ search input visible in nav - **Clone instruction:** Build a static logo left links left navigation. Link-only — no button styling needed. ### Card Grid Pattern - **Card count:** 7 cards detected - **Columns (desktop):** 1-up grid - **Card dimensions:** 1024×201px (aspect 5.09:1) - **Gap:** 0px between cards - **Content:** ✗ no image - **Clone instruction:** Build a 1-column grid (desktop) with cards at ~5.09:1 aspect ratio. Text/icon-only cards (no photography). ### Testimonial Pattern - **Count:** 7 testimonial blocks - **Layout:** grid - **Avg quote length:** 136 chars (medium quote) - **Includes:** ✗ no avatars | ✗ no logos | ✗ no ratings - **Clone instruction:** Build a grid of 7 testimonials. ### Footer Pattern - **Columns:** 1 - **Links:** 28 total - **Height:** 416px - **Includes:** ✗ no newsletter | ✓ social icons | ✓ copyright - **Clone instruction:** Build a 1-column footer with ~28 links per column, social media links, and a copyright line. ## 6. Depth & Elevation | Level | Treatment | Use | |-------|-----------|-----| | Flat (Level 0) | No shadow | Page background, content blocks | | Layered (Level 1) |
`rgba(0, 0, 0, 0.1) 0px 1px 3px 0px`,
`rgba(0, 0, 0, 0.1) 0px 1px 2px -1px` | Cards, elevated surfaces | | Layered (Level 2) |
`rgba(0, 0, 0, 0.25) 0px 25px 50px -12px` | Cards, elevated surfaces | | Layered (Level 3) |
`rgba(0, 0, 0, 0.1) 0px 10px 15px -3px`,
`rgba(0, 0, 0, 0.1) 0px 4px 6px -4px` | Cards, elevated surfaces | | Layered (Level 4) |
`rgba(203, 209, 225, 0.4) 2px 4px 0px 0px` | Cards, elevated surfaces | **Shadow Philosophy**: Multi-layered shadow system creating natural, atmospheric depth. Each shadow level combines multiple layers for realistic elevation. ## 7. Motion & Interaction ### Easing System | CSS Variable | Curve | Semantic Name | |--------------|-------|---------------| | `--default-transition-timing-function` | `cubic-bezier(.4,0,.2,1)` | Ease Out — Decelerating | | `--ease-out` | `cubic-bezier(0,0,.2,1)` | Ease Out — Decelerating | | `--ease-in-out` | `cubic-bezier(.4,0,.2,1)` | Ease Out — Decelerating | ### Duration Scale | CSS Variable | Value | Tier | |--------------|-------|------| | `--default-transition-duration` | `.15s` | Fast | ### Copy-Paste Transition Snippets **All Props** ```css transition: 0.5s cubic-bezier(0.4, 0, 0.2, 1); ``` **Color / Background** ```css transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.15s cub...; ``` **All Props** ```css transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1); ``` **All Props** ```css transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1); ``` ### Keyframe Animation Catalog | Animation Name | Type | Animated Props | Use Hint | |----------------|------|----------------|----------| | `spin` | Rotate / Spin | transform | Loading indicator | | `move` | Slide | transform | UI transition | | `buttonBorderSpin` | Custom | --border-gradient-angle | Loading indicator | | `firstHalfBorderSpin` | Custom | --border-gradient-angle | Loading indicator | | `secondHalfBorderSpin` | Custom | --border-gradient-angle | Loading indicator | | `badgeBorderSpin` | Custom | --border-gradient-angle | Loading indicator | | `fadeInSlideUp` | Fade + Move | opacity, transform | Element entrance | | `fadeIn` | Fade | opacity | Element entrance | | `infra-border-fade` | Custom | | UI transition | | `infra-desaturate` | Filter | filter | UI transition | | `infra-scale-y` | Scale | transform | Focus / emphasis | | `dino-peek` | Slide | transform | UI transition | | `blink` | Scale | transform | Attention / status | | `cloud_drift` | Slide | transform | UI transition | | `rain` | Slide | transform | UI transition | | `rain-fade` | Fade | opacity | UI transition | | `steam` | Fade + Move | transform, opacity | UI transition | | `copy` | Custom | | UI transition | | `ws_grow` | Scale | transform | UI transition | | `ws_slide_left` | Fade + Move | transform, opacity | UI transition | > *2 additional animations omitted (repetitive variants). See raw keyframes in `raw-css.json`.* ### Motion Fingerprint - **Speed Character**: Balanced Pacing (median duration: `200ms`) - **Dominant Easing**: custom cubic-bezier curves - **Animation Library**: 22 unique animations (22 total including variants) > This design moves with balanced pacing timing using custom cubic-bezier curves, creating a UI that feels natural and fluid. ## 8. Do's and Don'ts ### Do - Use Inter as the primary typeface — it defines the brand personality - Use negative letter-spacing (-1.8px) at display sizes for compressed, editorial headlines - Use the extracted shadow patterns for elevation — they are tuned to match the brand palette - Use full-pill radius (9999px) only for specific elements (avatars, pills, toggles) - Use Runtime (`#70ffaf`) as the primary accent — it's the brand's signature interactive color - Use pill-shaped radius (9999px) for primary CTA buttons — the brand uses fully-rounded, pill CTAs - Style form inputs with a `1px solid rgb(134, 135, 137)` border — use border-based inputs, not floating labels or underline-only - Maintain nav height at 48px — consistent vertical space for the navigation bar - Respect the 4px–56px spacing range — the design uses a wide scale for visual breathing room - Include exactly 2 CTAs in the hero (primary + secondary) — this design pattern is multi-action, not single-purpose - Include a search input directly in the nav — discoverability is a primary UX value here - Lay out testimonials in a grid (7+ items) — quantity signals scale and trust ### Don't - Don't substitute with generic sans-serif or serif — the custom font carries the brand - Don't increase letter-spacing on headings — the type is designed to run tight at scale - Don't invent new shadow values — use only the extracted shadow levels - Don't apply pill radius on rectangular buttons or cards — it's reserved for specific interactive elements - Don't introduce additional saturated accent colors — the palette is intentionally controlled - Don't use rectangular buttons for primary actions — the rounded pill shape is the brand standard - Don't remove the input border — the border is the primary affordance indicator for form fields - Don't collapse or hide the nav on scroll without an explicit scroll-triggered animation — the design uses fixed nav presence - Don't make the nav sticky — this design lets it scroll away to maximize content focus - Don't put a CTA button in the nav — this design uses links only at the top ## 7b. Enforceable Brand Rules *Structured Do/Don't with reasoning and validation tests. Agents can programmatically verify generated UI.* ```yaml rules: - id: brand-canvas-001 type: do rule: "Always use the page background `oklab(0.999994 0.0000455678 0.0000200868 / 0.9)` as the base canvas" why: "Every component is designed to composit against this exact tone" test: "document.body.style.backgroundColor === 'oklab(0.999994 0.0000455678 0.0000200868 / 0.9)'" - id: brand-accent-001 type: do rule: "Reserve `rgb(112, 255, 175)` for primary CTAs and brand-mark signals only" why: "Single chromatic assertion device — overuse dilutes meaning" test: "querySelectorAll('[style*=\"rgb(112, 255, 175)\"]').length <= 3 per fold" ``` ## 9. Responsive Behavior ### Breakpoints | Name | Width | Key Changes | |------|-------|-------------| | Mobile | 440px | Single column, compact spacing | | Tablet | 768px | Multi-column grids begin | | Tablet | 1024px | Multi-column grids begin | | Desktop | 1080px | Full feature layout | ### Token Diff — Desktop vs Mobile | Element | Property | Desktop | Mobile | |---------|----------|---------|--------| | heading | font-size | `72px` | `39.25px` | | heading | line-height | `79.2px` | `43.175px` | | heading | letter-spacing | `-1.8px` | `-0.98125px` | | nav | display | `flex` | `grid` | ### Collapsing Strategy - Headlines: 72px → 39.25px on mobile - Navigation: flex → grid on mobile - Cards: multi-column → stacked vertical on mobile - Footer: multi-column → stacked single column on mobile ### Touch Targets - Buttons: 0px padding - Navigation: adequate spacing between items - Interactive elements: minimum 44px touch target recommended ### Collapsing Narrative How the structural patterns adapt from desktop to mobile (extracted from both viewport extractions): - **Hero collapses left-aligned → centered** — composition shifts (verify on actual mobile render). - **Navigation collapses to hamburger** — 3 links visible on desktop, 1 on mobile (the rest hide behind a menu toggle). ## 7c. Visual Effects & Dynamic Behavior *The live/dynamic layer beyond static CSS — reproduce these, not flat substitutes. This is often what separates a faithful clone from a wireframe.* - **Glassmorphism** — 1 frosted/blur layer(s) (e.g. `blur(12px)`). - **Mesh gradients** — 5 multi-stop organic color field(s) as background atmosphere. - **Clip-path shapes** — 8 non-rectangular cut(s). - **Scroll-driven reveals** — content animates in on scroll (CSS scroll-timeline). Build fade/translate reveal-on-scroll for below-fold bands. - **CSS-variable animations** (5) — animated custom properties. > **Motion fingerprint**: glassmorphism (1 layers), mesh gradients, non-rectangular shapes (10), CSS scroll-driven animations ## 9b. Visual Tone & Photography **Tone:** Illustration-driven The site relies primarily on illustrations, vector art, and decorative SVG elements rather than photography. Use commissioned illustrations, icon sets, or generated graphics for clones — stock photos will feel off-brand. **Canonical Brand Image (OG):** - https://deno.com/og/image.jpg *This is the image shown when the site is shared on social media — represents the brand visual essence.* **Hero Image (above-fold dominant visual):** - Aspect: 1:1 (square / portrait) - Rendered size: 578×578px - *Use this aspect ratio + composition for your clone's hero — mimicking the proportion preserves the visual hierarchy.* **Aspect Ratio Distribution:** - Landscape (1.15–2.3): 3 (13%) - Portrait (<0.87): 5 (22%) - Square (0.87–1.15): 14 (61%) - Ultra-wide (>2.3): 1 (4%) **Media Format Mix:** - WebP: 5 (optimized photo/illustration hybrid) - PNG: 1 (logos, transparent UI elements, mockups) - SVG: 19 (icons, illustrations, decorative geometry) **Average rendered image size:** 211×200px **Above-fold image count:** 5 / 23 **Decorative Patterns Detected:** - 20 multi-stop linear gradients (mesh-like, 3+ color stops) — the brand leans on rich color transitions for visual depth - 1 radial gradient — circular color blooms used for spotlight/glow effects - 2 large decorative SVG shapes (≥200×200px, non-icon) — likely blob/illustration accents - **Glassmorphism** detected (`backdrop-filter: blur`) — layered transparent surfaces with blur, modern OS-like aesthetic **Clone instruction for decorative work:** This is a gradient-rich design — invest in multi-stop CSS gradients (3+ color stops), not solid backgrounds. **Imagery Guidance for clones:** - Use vector illustration as the primary visual language — photos will read as off-brand. - Maintain consistent illustration style (line weight, color palette) across the site. ## 10. Agent Prompt Guide ### Quick Reference - Background: White (`#ffffff`) - Primary text: Pure Black (`#000000`) - Accent: Runtime (`#70ffaf`) - Border: Slate Grey (`#868789`) - Font: Inter - Body: 16px weight 400 ### Example Component Prompts - "Create a hero section on White background (#ffffff). Headline at 72px Inter weight 700, line-height 1.1, letter-spacing -1.8px, color #000000." - "Create the primary CTA button: `#70ffaf` background, `#000000` text, 9999px border-radius, 2px padding, 700 weight, Inter font." - "Build navigation: static on `#ffffff`. Inter 18px weight 400 for links." ### Iteration Guide 1. **Canvas**: Set the light canvas to White (`#ffffff`) — every component is composited against this exact base. 2. **Typography**: All type in Inter, weight range 400–700. Never exceed 700 — heavier weights break the brand's tonal restraint. 3. **Accent**: Runtime (`#70ffaf`) — one accent, applied consistently to CTAs, active states, and links. Never introduce a second saturated color. 4. **Motion**: All transitions use `cubic-bezier(0.4,0,0.2,1)`. Timing: 150ms for micro-interactions, 150ms for layout changes. Never use linear for UI transitions — preserve the brand's easing personality. 5. **Shape**: CTAs at `0px`. Apply border-radius from the extracted scale only — don't invent intermediate values. 6. **Spacing**: Use the `--ca-space-*` token scale (4px–56px). All padding, margin, and gap values are multiples from this scale — no magic numbers. 7. **Tokens**: Import from §11 CSS Export (`--ca-*` vars). Never hardcode hex values — always reference a token so theming remains consistent. ## 11. CSS Design Tokens Raw Export *Copy-paste ready `:root {}` block — all values extracted directly from the live site.* ```css /* Colors */ :root { --ca-background: #ffffff; --ca-surface-1: #f2f0df; --ca-surface-2: #f5f5f5; --ca-ink-muted: #172723; --ca-ink-subtle: #656d76; --ca-primary: #70ffaf; --ca-on-primary: #111111; --ca-primary-hover: #405274; --ca-hairline: #868789; --ca-primary-focus: #ae01ff; --ca-semantic-error: #d1242f; } /* Typography */ :root { --ca-font-primary: "Inter", system-ui, sans-serif; --ca-text-display: 72px; --ca-text-body: 16px; --ca-text-caption: 13.6px; --ca-text-button: 18px; } /* Spacing & Radius */ :root { --ca-space-xxs: 2px; --ca-space-xs: 4px; --ca-space-sm: 8px; --ca-space-md: 24px; --ca-space-base: 32px; --ca-space-lg: 48px; --ca-space-xl: 56px; --ca-space-2xl: 64px; --ca-space-3xl: 144px; --ca-radius-none: 0px; --ca-radius-xs: 4px; --ca-radius-sm: 8px; --ca-radius-md: 12px; --ca-radius-lg: 9997px; --ca-radius-xl: 9999px; --ca-radius-full: 9997px; } /* Motion */ :root { --ca-ease-out: cubic-bezier(0,0,.2,1); --ca-ease-in-out: cubic-bezier(.4,0,.2,1); } ``` ## 13. Page Structure Skeleton *The actual layout the source site uses. Reproduce these sections in order to match the site structure.* ```yaml page-skeleton: - section: hero tag: div height: 900px width: full-bleed layout: block children: 1 - section: header tag: header classes: ["z-50", "dark:text-gray-50", "sticky", "top-0"] height: 96px width: full-bleed layout: block children: 3 bg: "oklab(0.999994 0.0000455678 0.0000200868 / 0.9)" vertical-padding: ~24px - section: logo-strip tag: div classes: ["section-x-inset-xl", "py-3", "sm:py-6"] height: 96px width: 1280px layout: block children: 1 vertical-padding: ~24px padding: "24px 56px" - section: feature-section tag: div classes: ["grid", "place-content-center", "bg-gradient-to-tr", "from-white"] height: 706px width: full-bleed layout: grid: 1-col gap=normal children: 1 bg-treatment: linear-gradient vertical-padding: ~64px (generous) padding: "64px 0px" - section: feature-section tag: main height: 14775px width: full-bleed layout: block children: 1 - section: feature-section tag: div classes: ["md:col-start-1", "md:row-start-1", "section-x-inset-xl"] height: 578px width: 1280px layout: block children: 1 padding: "0px 56px" - section: feature-section tag: div classes: ["pt-16", "pb-8", "text-center", "flex"] height: 349px width: full-bleed layout: flex-column justify=center children: 1 bg: "rgb(255, 255, 255)" vertical-padding: ~48px padding: "64px 0px 32px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1315px width: full-bleed layout: flex-column justify=center children: 1 bg-treatment: mesh-gradient vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 1027px width: 1280px layout: flex-column justify=normal children: 1 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1767px width: full-bleed layout: flex-column justify=center children: 1 bg-treatment: linear-gradient vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 1479px width: 1280px layout: flex-column justify=normal children: 2 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1203px width: full-bleed layout: flex-column justify=center children: 1 bg: "rgba(255, 255, 255, 0.01)" vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 915px width: 1280px layout: flex-column justify=normal children: 2 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1695px width: full-bleed layout: flex-column justify=center children: 1 bg-treatment: linear-gradient vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 1407px width: 1280px layout: flex-column justify=normal children: 2 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1067px width: full-bleed layout: flex-column justify=center children: 1 vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 779px width: 1280px layout: flex-column justify=normal children: 3 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 914px width: full-bleed layout: flex-column justify=center children: 1 vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 626px width: 1280px layout: flex-column justify=normal children: 1 padding: "0px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 597px width: full-bleed layout: flex-column justify=center children: 1 vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 309px width: 1280px layout: flex-column justify=normal children: 1 padding: "0px 56px" - section: feature-section tag: div classes: ["deploy-page", "border-b", "border-deploy-neutral-350"] height: 1977px width: full-bleed layout: block children: 2 bg: "rgb(248, 249, 252)" vertical-padding: ~32px - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 1886px width: 1280px layout: flex-column justify=normal children: 4 bg: "rgb(241, 243, 249)" vertical-padding: ~144px (airy) padding: "144px 56px" - section: feature-section tag: div classes: ["flex", "flex-col", "items-center", "justify-center"] height: 1779px width: full-bleed layout: flex-column justify=center children: 1 bg-treatment: mesh-gradient vertical-padding: ~144px (airy) padding: "144px 0px" - section: feature-section tag: div classes: ["w-full", "flex", "flex-col", "items-center"] height: 1490px width: 1280px layout: flex-column justify=normal children: 4 padding: "0px 56px" ``` **Agent rule**: rebuild sections in this order (sorted by vertical position). Match the layout primitive (grid N-col / flex direction / block). ## 14. Copy Library (Real Content from Source) *Actual text content extracted from the live page. Use these strings verbatim when reproducing the site — they carry the brand voice.* ```yaml copy: section-headings: - "Install Deno 2.8.2" - "Deno is the open-source JavaScript runtime for the modern web." - "All your favorite tools, built-in and ready to go" - "Built on web standards" - "— The cloud built for modern JavaScript —" - "Open-source" sub-headings: - "Enterprise-grade JavaScript" - "Just run" - "Seamless" - "Consistent code from browser to backend" - "Code linter" - "High-performance networking" ctas: - "Skip to main content" - "Read the post->" - "Dismiss" - "Products" - "Docs" - "Modules" - "GitHub" - "MacOS/Linux" navigation: - "Docs" - "Blog" footer-links: - "Deno" - "GitHub" - "Discord" - "All systems operational" ``` **Agent rule**: reuse these exact strings when generating UI. Do NOT translate or rephrase — brand voice is preserved through the original wording. ## 15. Asset Inventory (Image Roles & Ratios) *Image inventory classified by role and aspect ratio. When reproducing the site, allocate this number of assets per role.* ```yaml assets: logo: count: 14 avg-ratio: 3.32 common-aspect: "~16:6 banner" sample-alts: - "Slack" - "Netlify" - "GitHub" product: count: 5 avg-ratio: 1.00 common-aspect: "~1:1 square" thumbnail: count: 10 avg-ratio: 0.99 common-aspect: "~1:1 square" sample-alts: - "TypeScript" - "Docker" - "AWS Lambda distribution" ``` **Agent rule**: when generating placeholder images, match these counts and aspect ratios. Use neutral placeholder backgrounds for `product` (e.g. `#f5f5f5`), full-color photography hints for `hero` and `editorial`. ## 16. Component HTML Templates *Suggested HTML markup for reproducing the key components — based on what was detected in the source DOM.* ### Button (primary action) ```html ``` _Source pattern detected: padding `8px` · radius `0px` · weight `400`_ **Agent rule**: use these markup skeletons as the structural baseline. Apply tokens from §2-3 for visual styling. ## 17. Content Architecture & Resources (Links by Purpose) *The page's links classified by purpose — the information architecture to reproduce. Categories, featured images, devices and projects are extracted from the rendered DOM, not guessed.* **By purpose:** **nav** 1 · **auth** 1 · **pricing** 1 · **docs** 15 · **blog** 2 · **social** 6 · **footer** 2 · **other** 32 **Primary actions (conversion path):** - Account access — "Sign in" (login/signup) → `https://console.deno.com/` **Projects / case studies detected** (clustered by URL + featured image): *Runtime* — medium confidence, 12 items: | Title | Featured image | Link | |---|---|---| | More about TypeScript in Deno | — | https://docs.deno.com/runtime/fundamentals/typescript/ | | Node and npm support | — | https://docs.deno.com/runtime/manual/node | | Web APIs in Deno | — | https://docs.deno.com/runtime/manual/runtime/web_platform_apis/ | | Security in Deno | — | https://docs.deno.com/runtime/manual/basics/permissions | | View documentation | — | https://docs.deno.com/runtime/manual/runtime/http_server_apis/ | | How to Deploy Deno to Digital Ocean | `digitalocean-light.svg` (ar 1) | https://docs.deno.com/runtime/manual/advanced/deploying_deno/digital_ocean | | How to Deploy to Google Cloud Run | `gcloud-light.svg` (ar 1) | https://docs.deno.com/runtime/manual/advanced/deploying_deno/google_cloud_run | | Install now | — | https://docs.deno.com/runtime/manual | **Signals:** 44/60 links carry a featured image · device mockups detected: laptop ×1 · dominant link roles: content-card (40), inline-link (14), footer-link (4). --- ## Extraction Completeness: 99/100 (A) | Category | Score | Max | Detail | |----------|-------|-----|--------| | Colors & Palette | 25 | 25 | 23 named colors | | Typography | 20 | 20 | 8 roles defined | | Components | 20 | 20 | 5 specs extracted | | Motion & Interaction | 15 | 15 | Keyframes, easing vars | | CSS Custom Properties | 10 | 10 | 308 vars | | Responsive Breakpoints | 4 | 5 | 4 breakpoints | | Variable Fonts | 5 | 5 | CASL, CRSV, MONO, SLNT axes | ## 12. Known Gaps & Confidence Explicit list of what this extraction could NOT capture. Agents should not invent values for these — either skip the feature or use the documented baseline + heuristic fallback. *Auto-detected extraction limitations — understand before building:* - **Licensed web fonts (Inter, Moranga, Recursive)** — detected but not downloaded. Substitute with your licensed copy or a close fallback (see Typography section for metrics). - **1 parasitic shadow(s) detected** — colored box-shadows (not near-black) found in allShadows. These likely originate from browser extensions or third-party injected widgets (e.g. Grammarly, chat overlays), not from the site's own design system. Discard them when building. *✅ No critical extraction gaps detected — high-confidence reproduction expected.* ### Per-section confidence | Section | Confidence | Reason | |---------|------------|--------| | §1 Visual Theme | High | Body bg extracted via getComputedStyle() | | §2 Colors | High | 308 CSS vars (semantic naming requires ≥20 for high) | | §3 Typography | High | 8 typography roles inferred | | §4 Components | High | 5 component variants captured | | §7 Motion | High | Keyframes + transitions | | §8 Do's/Don'ts | High | 22 rules generated; design-decisions.json has evidence per rule | | §9 Responsive | High | 4 breakpoints detected | | §9b Photography | High | 23 images, hero present | ## 11.1 CSS Implementation Guide (CSS Interception Engine v2.15+) *Ready-to-use CSS from Prism's CSS Interception Engine — intercepted directly from the site's CSS files (bypasses CORS). Copy-paste into your `