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الرئيسية
استكشف الأطر
العربية
English
تجربة الوضع الداكن
المعاينة الحية
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Stripe
Design framework from Stripe
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DESIGN.md
# Design System: Stripe ## 1. Visual Theme & Atmosphere Stripe's website is the gold standard of fintech design -- a system that manages to feel simultaneously technical and luxurious, precise and warm. The page opens on a clean white canvas (`#ffffff`) with deep navy headings (`#061b31`) and a signature purple (`#533afd`) that functions as both brand anchor and interactive accent. This isn't the cold, clinical purple of enterprise software; it's a rich, saturated violet that reads as confident and premium. The overall impression is of a financial institution redesigned by a world-class type foundry. The custom `sohne-var` variable font is the defining element of Stripe's visual identity. Every text element enables the OpenType `"ss01"` stylistic set, which modifies character shapes for a distinctly geometric, modern feel. At display sizes (48px-56px), sohne-var runs at weight 300 -- an extraordinarily light weight for headlines that creates an ethereal, almost whispered authority. This is the opposite of the "bold hero headline" convention; Stripe's headlines feel like they don't need to shout. The negative letter-spacing (-1.4px at 56px, -0.96px at 48px) tightens the text into dense, engineered blocks. At smaller sizes, the system also uses weight 300 with proportionally reduced tracking, and tabular numerals via `"tnum"` for financial data display. What truly distinguishes Stripe is its shadow system. Rather than the flat or single-layer approach of most sites, Stripe uses multi-layer, blue-tinted shadows: the signature `rgba(50,50,93,0.25)` combined with `rgba(0,0,0,0.1)` creates shadows with a cool, almost atmospheric depth -- like elements are floating in a twilight sky. The blue-gray undertone of the primary shadow color (50,50,93) ties directly to the navy-purple brand palette, making even elevation feel on-brand. **Key Characteristics:** - sohne-var with OpenType `"ss01"` on all text -- a custom stylistic set that defines the brand's letterforms - Weight 300 as the signature headline weight -- light, confident, anti-convention - Negative letter-spacing at display sizes (-1.4px at 56px, progressive relaxation downward) - Blue-tinted multi-layer shadows using `rgba(50,50,93,0.25)` -- elevation that feels brand-colored - Deep navy (`#061b31`) headings instead of black -- warm, premium, financial-grade - Conservative border-radius (4px-8px) -- nothing pill-shaped, nothing harsh - Ruby (`#ea2261`) and magenta (`#f96bee`) accents for gradient and decorative elements - `SourceCodePro` as the monospace companion for code and technical labels ## 2. Color Palette & Roles ### Primary - **Stripe Purple** (`#533afd`): Primary brand color, CTA backgrounds, link text, interactive highlights. A saturated blue-violet that anchors the entire system. - **Deep Navy** (`#061b31`): `--hds-color-heading-solid`. Primary heading color. Not black, not gray -- a very dark blue that adds warmth and depth to text. - **Pure White** (`#ffffff`): Page background, card surfaces, button text on dark backgrounds. ### Brand & Dark - **Brand Dark** (`#1c1e54`): `--hds-color-util-brand-900`. Deep indigo for dark sections, footer backgrounds, and immersive brand moments. - **Dark Navy** (`#0d253d`): `--hds-color-core-neutral-975`. The darkest neutral -- almost-black with a blue undertone for maximum depth without harshness. ### Accent Colors - **Ruby** (`#ea2261`): `--hds-color-accentColorMode-ruby-icon-solid`. Warm red-pink for icons, alerts, and accent elements. - **Magenta** (`#f96bee`): `--hds-color-accentColorMode-magenta-icon-gradientMiddle`. Vivid pink-purple for gradients and decorative highlights. - **Magenta Light** (`#ffd7ef`): `--hds-color-util-accent-magenta-100`. Tinted surface for magenta-themed cards and badges. ### Interactive - **Primary Purple** (`#533afd`): Primary link color, active states, selected elements. - **Purple Hover** (`#4434d4`): Darker purple for hover states on primary elements. - **Purple Deep** (`#2e2b8c`): `--hds-color-button-ui-iconHover`. Dark purple for icon hover states. - **Purple Light** (`#b9b9f9`): `--hds-color-action-bg-subduedHover`. Soft lavender for subdued hover backgrounds. - **Purple Mid** (`#665efd`): `--hds-color-input-selector-text-range`. Range selector and input highlight color. ### Neutral Scale - **Heading** (`#061b31`): Primary headings, nav text, strong labels. - **Label** (`#273951`): `--hds-color-input-text-label`. Form labels, secondary headings. - **Body** (`#64748d`): Secondary text, descriptions, captions. - **Success Green** (`#15be53`): Status badges, success indicators (with 0.2-0.4 alpha for backgrounds/borders). - **Success Text** (`#108c3d`): Success badge text color. - **Lemon** (`#9b6829`): `--hds-color-core-lemon-500`. Warning and highlight accent. ### Surface & Borders - **Border Default** (`#e5edf5`): Standard border color for cards, dividers, and containers. - **Border Purple** (`#b9b9f9`): Active/selected state borders on buttons and inputs. - **Border Soft Purple** (`#d6d9fc`): Subtle purple-tinted borders for secondary elements. - **Border Magenta** (`#ffd7ef`): Pink-tinted borders for magenta-themed elements. - **Border Dashed** (`#362baa`): Dashed borders for drop zones and placeholder elements. ### Shadow Colors - **Shadow Blue** (`rgba(50,50,93,0.25)`): The signature -- blue-tinted primary shadow color. - **Shadow Dark Blue** (`rgba(3,3,39,0.25)`): Deeper blue shadow for elevated elements. - **Shadow Black** (`rgba(0,0,0,0.1)`): Secondary shadow layer for depth reinforcement. - **Shadow Ambient** (`rgba(23,23,23,0.08)`): Soft ambient shadow for subtle elevation. - **Shadow Soft** (`rgba(23,23,23,0.06)`): Minimal ambient shadow for light lift. ## 3. Typography Rules ### Font Family - **Primary**: `sohne-var`, with fallback: `SF Pro Display` - **Monospace**: `SourceCodePro`, with fallback: `SFMono-Regular` - **OpenType Features**: `"ss01"` enabled globally on all sohne-var text; `"tnum"` for tabular numbers on financial data and captions. ### Hierarchy | Role | Font | Size | Weight | Line Height | Letter Spacing | Features | Notes | |------|------|------|--------|-------------|----------------|----------|-------| | Display Hero | sohne-var | 56px (3.50rem) | 300 | 1.03 (tight) | -1.4px | ss01 | Maximum size, whisper-weight authority | | Display Large | sohne-var | 48px (3.00rem) | 300 | 1.15 (tight) | -0.96px | ss01 | Secondary hero headlines | | Section Heading | sohne-var | 32px (2.00rem) | 300 | 1.10 (tight) | -0.64px | ss01 | Feature section titles | | Sub-heading Large | sohne-var | 26px (1.63rem) | 300 | 1.12 (tight) | -0.26px | ss01 | Card headings, sub-sections | | Sub-heading | sohne-var | 22px (1.38rem) | 300 | 1.10 (tight) | -0.22px | ss01 | Smaller section heads | | Body Large | sohne-var | 18px (1.13rem) | 300 | 1.40 | normal | ss01 | Feature descriptions, intro text | | Body | sohne-var | 16px (1.00rem) | 300-400 | 1.40 | normal | ss01 | Standard reading text | | Button | sohne-var | 16px (1.00rem) | 400 | 1.00 (tight) | normal | ss01 | Primary button text | | Button Small | sohne-var | 14px (0.88rem) | 400 | 1.00 (tight) | normal | ss01 | Secondary/compact buttons | | Link | sohne-var | 14px (0.88rem) | 400 | 1.00 (tight) | normal | ss01 | Navigation links | | Caption | sohne-var | 13px (0.81rem) | 400 | normal | normal | ss01 | Small labels, metadata | | Caption Small | sohne-var | 12px (0.75rem) | 300-400 | 1.33-1.45 | normal | ss01 | Fine print, timestamps | | Caption Tabular | sohne-var | 12px (0.75rem) | 300-400 | 1.33 | -0.36px | tnum | Financial data, numbers | | Micro | sohne-var | 10px (0.63rem) | 300 | 1.15 (tight) | 0.1px | ss01 | Tiny labels, axis markers | | Micro Tabular | sohne-var | 10px (0.63rem) | 300 | 1.15 (tight) | -0.3px | tnum | Chart data, small numbers | | Nano | sohne-var | 8px (0.50rem) | 300 | 1.07 (tight) | normal | ss01 | Smallest labels | | Code Body | SourceCodePro | 12px (0.75rem) | 500 | 2.00 (relaxed) | normal | -- | Code blocks, syntax | | Code Bold | SourceCodePro | 12px (0.75rem) | 700 | 2.00 (relaxed) | normal | -- | Bold code, keywords | | Code Label | SourceCodePro | 12px (0.75rem) | 500 | 2.00 (relaxed) | normal | uppercase | Technical labels | | Code Micro | SourceCodePro | 9px (0.56rem) | 500 | 1.00 (tight) | normal | ss01 | Tiny code annotations | ### Principles - **Light weight as signature**: Weight 300 at display sizes is Stripe's most distinctive typographic choice. Where others use 600-700 to command attention, Stripe uses lightness as luxury -- the text is so confident it doesn't need weight to be authoritative. - **ss01 everywhere**: The `"ss01"` stylistic set is non-negotiable. It modifies specific glyphs (likely alternate `a`, `g`, `l` forms) to create a more geometric, contemporary feel across all sohne-var text. - **Two OpenType modes**: `"ss01"` for display/body text, `"tnum"` for tabular numerals in financial data. These never overlap -- a number in a paragraph uses ss01, a number in a data table uses tnum. - **Progressive tracking**: Letter-spacing tightens proportionally with size: -1.4px at 56px, -0.96px at 48px, -0.64px at 32px, -0.26px at 26px, normal at 16px and below. - **Two-weight simplicity**: Primarily 300 (body and headings) and 400 (UI/buttons). No bold (700) in the primary font -- SourceCodePro uses 500/700 for code contrast. ## 4. Component Stylings ### Buttons **Primary Purple** - Background: `#533afd` - Text: `#ffffff` - Padding: 8px 16px - Radius: 4px - Font: 16px sohne-var weight 400, `"ss01"` - Hover: `#4434d4` background - Use: Primary CTA ("Start now", "Contact sales") **Ghost / Outlined** - Background: transparent - Text: `#533afd` - Padding: 8px 16px - Radius: 4px - Border: `1px solid #b9b9f9` - Font: 16px sohne-var weight 400, `"ss01"` - Hover: background shifts to `rgba(83,58,253,0.05)` - Use: Secondary actions **Transparent Info** - Background: transparent - Text: `#2874ad` - Padding: 8px 16px - Radius: 4px - Border: `1px solid rgba(43,145,223,0.2)` - Use: Tertiary/info-level actions **Neutral Ghost** - Background: transparent (`rgba(255,255,255,0)`) - Text: `rgba(16,16,16,0.3)` - Padding: 8px 16px - Radius: 4px - Outline: `1px solid rgb(212,222,233)` - Use: Disabled or muted actions ### Cards & Containers - Background: `#ffffff` - Border: `1px solid #e5edf5` (standard) or `1px solid #061b31` (dark accent) - Radius: 4px (tight), 5px (standard), 6px (comfortable), 8px (featured) - Shadow (standard): `rgba(50,50,93,0.25) 0px 30px 45px -30px, rgba(0,0,0,0.1) 0px 18px 36px -18px` - Shadow (ambient): `rgba(23,23,23,0.08) 0px 15px 35px 0px` - Hover: shadow intensifies, often adding the blue-tinted layer ### Badges / Tags / Pills **Neutral Pill** - Background: `#ffffff` - Text: `#000000` - Padding: 0px 6px - Radius: 4px - Border: `1px solid #f6f9fc` - Font: 11px weight 400 **Success Badge** - Background: `rgba(21,190,83,0.2)` - Text: `#108c3d` - Padding: 1px 6px - Radius: 4px - Border: `1px solid rgba(21,190,83,0.4)` - Font: 10px weight 300 ### Inputs & Forms - Border: `1px solid #e5edf5` - Radius: 4px - Focus: `1px solid #533afd` or purple ring - Label: `#273951`, 14px sohne-var - Text: `#061b31` - Placeholder: `#64748d` ### Navigation - Clean horizontal nav on white, sticky with blur backdrop - Brand logotype left-aligned - Links: sohne-var 14px weight 400, `#061b31` text with `"ss01"` - Radius: 6px on nav container - CTA: purple button right-aligned ("Sign in", "Start now") - Mobile: hamburger toggle with 6px radius ### Decorative Elements **Dashed Borders** - `1px dashed #362baa` (purple) for placeholder/drop zones - `1px dashed #ffd7ef` (magenta) for magenta-themed decorative borders **Gradient Accents** - Ruby-to-magenta gradients (`#ea2261` to `#f96bee`) for hero decorations - Brand dark sections use `#1c1e54` backgrounds with white text ## 5. Layout Principles ### Spacing System - Base unit: 8px - Scale: 1px, 2px, 4px, 6px, 8px, 10px, 11px, 12px, 14px, 16px, 18px, 20px - Notable: The scale is dense at the small end (every 2px from 4-12), reflecting Stripe's precision-oriented UI for financial data ### Grid & Container - Max content width: approximately 1080px - Hero: centered single-column with generous padding, lightweight headlines - Feature sections: 2-3 column grids for feature cards - Full-width dark sections with `#1c1e54` background for brand immersion - Code/dashboard previews as contained cards with blue-tinted shadows ### Whitespace Philosophy - **Precision spacing**: Unlike the vast emptiness of minimalist systems, Stripe uses measured, purposeful whitespace. Every gap is a deliberate typographic choice. - **Dense data, generous chrome**: Financial data displays (tables, charts) are tightly packed, but the UI chrome around them is generously spaced. This creates a sense of controlled density -- like a well-organized spreadsheet in a beautiful frame. - **Section rhythm**: White sections alternate with dark brand sections (`#1c1e54`), creating a dramatic light/dark cadence that prevents monotony without introducing arbitrary color. ### Border Radius Scale - Micro (1px): Fine-grained elements, subtle rounding - Standard (4px): Buttons, inputs, badges, cards -- the workhorse - Comfortable (5px): Standard card containers - Relaxed (6px): Navigation, larger interactive elements - Large (8px): Featured cards, hero elements - Compound: `0px 0px 6px 6px` for bottom-rounded containers (tab panels, dropdown footers) ## 6. Depth & Elevation | Level | Treatment | Use | |-------|-----------|-----| | Flat (Level 0) | No shadow | Page background, inline text | | Ambient (Level 1) | `rgba(23,23,23,0.06) 0px 3px 6px` | Subtle card lift, hover hints | | Standard (Level 2) | `rgba(23,23,23,0.08) 0px 15px 35px` | Standard cards, content panels | | Elevated (Level 3) | `rgba(50,50,93,0.25) 0px 30px 45px -30px, rgba(0,0,0,0.1) 0px 18px 36px -18px` | Featured cards, dropdowns, popovers | | Deep (Level 4) | `rgba(3,3,39,0.25) 0px 14px 21px -14px, rgba(0,0,0,0.1) 0px 8px 17px -8px` | Modals, floating panels | | Ring (Accessibility) | `2px solid #533afd` outline | Keyboard focus ring | **Shadow Philosophy**: Stripe's shadow system is built on a principle of chromatic depth. Where most design systems use neutral gray or black shadows, Stripe's primary shadow color (`rgba(50,50,93,0.25)`) is a deep blue-gray that echoes the brand's navy palette. This creates shadows that don't just add depth -- they add brand atmosphere. The multi-layer approach pairs this blue-tinted shadow with a pure black secondary layer (`rgba(0,0,0,0.1)`) at a different offset, creating a parallax-like depth where the branded shadow sits farther from the element and the neutral shadow sits closer. The negative spread values (-30px, -18px) ensure shadows don't extend beyond the element's footprint horizontally, keeping elevation vertical and controlled. ### Decorative Depth - Dark brand sections (`#1c1e54`) create immersive depth through background color contrast - Gradient overlays with ruby-to-magenta transitions for hero decorations - Shadow color `rgba(0,55,112,0.08)` (`--hds-color-shadow-sm-top`) for top-edge shadows on sticky elements ## 7. Do's and Don'ts ### Do - Use sohne-var with `"ss01"` on every text element -- the stylistic set IS the brand - Use weight 300 for all headlines and body text -- lightness is the signature - Apply blue-tinted shadows (`rgba(50,50,93,0.25)`) for all elevated elements - Use `#061b31` (deep navy) for headings instead of `#000000` -- the warmth matters - Keep border-radius between 4px-8px -- conservative rounding is intentional - Use `"tnum"` for any tabular/financial number display - Layer shadows: blue-tinted far + neutral close for depth parallax - Use `#533afd` purple as the primary interactive/CTA color ### Don't - Don't use weight 600-700 for sohne-var headlines -- weight 300 is the brand voice - Don't use large border-radius (12px+, pill shapes) on cards or buttons -- Stripe is conservative - Don't use neutral gray shadows -- always tint with blue (`rgba(50,50,93,...)`) - Don't skip `"ss01"` on any sohne-var text -- the alternate glyphs define the personality - Don't use pure black (`#000000`) for headings -- always `#061b31` deep navy - Don't use warm accent colors (orange, yellow) for interactive elements -- purple is primary - Don't apply positive letter-spacing at display sizes -- Stripe tracks tight - Don't use the magenta/ruby accents for buttons or links -- they're decorative/gradient only ## 8. Responsive Behavior ### Breakpoints | Name | Width | Key Changes | |------|-------|-------------| | Mobile | <640px | Single column, reduced heading sizes, stacked cards | | Tablet | 640-1024px | 2-column grids, moderate padding | | Desktop | 1024-1280px | Full layout, 3-column feature grids | | Large Desktop | >1280px | Centered content with generous margins | ### Touch Targets - Buttons use comfortable padding (8px-16px vertical) - Navigation links at 14px with adequate spacing - Badges have 6px horizontal padding minimum for tap targets - Mobile nav toggle with 6px radius button ### Collapsing Strategy - Hero: 56px display -> 32px on mobile, weight 300 maintained - Navigation: horizontal links + CTAs -> hamburger toggle - Feature cards: 3-column -> 2-column -> single column stacked - Dark brand sections: maintain full-width treatment, reduce internal padding - Financial data tables: horizontal scroll on mobile - Section spacing: 64px+ -> 40px on mobile - Typography scale compresses: 56px -> 48px -> 32px hero sizes across breakpoints ### Image Behavior - Dashboard/product screenshots maintain blue-tinted shadow at all sizes - Hero gradient decorations simplify on mobile - Code blocks maintain `SourceCodePro` treatment, may horizontally scroll - Card images maintain consistent 4px-6px border-radius ## 9. Agent Prompt Guide ### Quick Color Reference - Primary CTA: Stripe Purple (`#533afd`) - CTA Hover: Purple Dark (`#4434d4`) - Background: Pure White (`#ffffff`) - Heading text: Deep Navy (`#061b31`) - Body text: Slate (`#64748d`) - Label text: Dark Slate (`#273951`) - Border: Soft Blue (`#e5edf5`) - Link: Stripe Purple (`#533afd`) - Dark section: Brand Dark (`#1c1e54`) - Success: Green (`#15be53`) - Accent decorative: Ruby (`#ea2261`), Magenta (`#f96bee`) ### Example Component Prompts - "Create a hero section on white background. Headline at 48px sohne-var weight 300, line-height 1.15, letter-spacing -0.96px, color #061b31, font-feature-settings 'ss01'. Subtitle at 18px weight 300, line-height 1.40, color #64748d. Purple CTA button (#533afd, 4px radius, 8px 16px padding, white text) and ghost button (transparent, 1px solid #b9b9f9, #533afd text, 4px radius)." - "Design a card: white background, 1px solid #e5edf5 border, 6px radius. Shadow: rgba(50,50,93,0.25) 0px 30px 45px -30px, rgba(0,0,0,0.1) 0px 18px 36px -18px. Title at 22px sohne-var weight 300, letter-spacing -0.22px, color #061b31, 'ss01'. Body at 16px weight 300, #64748d." - "Build a success badge: rgba(21,190,83,0.2) background, #108c3d text, 4px radius, 1px 6px padding, 10px sohne-var weight 300, border 1px solid rgba(21,190,83,0.4)." - "Create navigation: white sticky header with backdrop-filter blur(12px). sohne-var 14px weight 400 for links, #061b31 text, 'ss01'. Purple CTA 'Start now' right-aligned (#533afd bg, white text, 4px radius). Nav container 6px radius." - "Design a dark brand section: #1c1e54 background, white text. Headline 32px sohne-var weight 300, letter-spacing -0.64px, 'ss01'. Body 16px weight 300, rgba(255,255,255,0.7). Cards inside use rgba(255,255,255,0.1) border with 6px radius." ### Iteration Guide 1. Always enable `font-feature-settings: "ss01"` on sohne-var text -- this is the brand's typographic DNA 2. Weight 300 is the default; use 400 only for buttons/links/navigation 3. Shadow formula: `rgba(50,50,93,0.25) 0px Y1 B1 -S1, rgba(0,0,0,0.1) 0px Y2 B2 -S2` where Y1/B1 are larger (far shadow) and Y2/B2 are smaller (near shadow) 4. Heading color is `#061b31` (deep navy), body is `#64748d` (slate), labels are `#273951` (dark slate) 5. Border-radius stays in the 4px-8px range -- never use pill shapes or large rounding 6. Use `"tnum"` for any numbers in tables, charts, or financial displays 7. Dark sections use `#1c1e54` -- not black, not gray, but a deep branded indigo 8. SourceCodePro for code at 12px/500 with 2.00 line-height (very generous for readability)