cal
starsforks
How to install cal?
ihlamury/design-skills/cal
$npx -y skills add ihlamury/design-skills --skill calCal's UI design system. Use when building interfaces inspired by Cal's aesthetic - light mode, Inter font, 4px grid.
SKILL.md
| 1 | # Cal UI Skills |
| 2 | |
| 3 | Opinionated constraints for building Cal-style interfaces with AI agents. |
| 4 | |
| 5 | ## When to Apply |
| 6 | |
| 7 | Reference these guidelines when: |
| 8 | - Building light-mode interfaces |
| 9 | - Creating Cal-inspired design systems |
| 10 | - Implementing UIs with Inter font and 4px grid |
| 11 | |
| 12 | ## Colors |
| 13 | |
| 14 | - SHOULD use light backgrounds for primary surfaces |
| 15 | - MUST use `#FDFDFD` as page background (`surface-base`) |
| 16 | - SHOULD reduce color palette (currently 16 colors detected) |
| 17 | - MUST maintain text contrast ratio of at least 4.5:1 for accessibility |
| 18 | |
| 19 | ### Semantic Tokens |
| 20 | |
| 21 | | Token | HEX | RGB | Usage | |
| 22 | |-------|-----|-----|-------| |
| 23 | | `surface-base` | #FDFDFD | rgb(253,253,253) | Page background | |
| 24 | | `surface-raised` | #EDEDED | rgb(237,237,237) | Cards, modals, raised surfaces | |
| 25 | | `surface-overlay` | #1C1C1C | rgb(28,28,28) | Overlays, tooltips, dropdowns | |
| 26 | | `text-primary` | #6B6B6B | rgb(107,107,107) | Headings, body text | |
| 27 | | `text-secondary` | #A1A1A1 | rgb(161,161,161) | Secondary, muted text | |
| 28 | | `text-tertiary` | #404040 | rgb(64,64,64) | Additional text | |
| 29 | | `border-default` | #E5E5E5 | rgb(229,229,229) | Subtle borders, dividers | |
| 30 | | `destructive` | #FCC9C1 | rgb(252,201,193) | Error states, delete actions | |
| 31 | |
| 32 | ## Typography |
| 33 | |
| 34 | - MUST use `Inter` as primary font family |
| 35 | - SHOULD use single font family for consistency |
| 36 | - MUST use `70px` / `700` for primary headings |
| 37 | - MUST use `16px` / `400` for body text |
| 38 | - SHOULD reduce font weights (currently 5 detected) |
| 39 | - MUST use `text-balance` for headings and `text-pretty` for body text |
| 40 | - SHOULD use `tabular-nums` for numeric data |
| 41 | - NEVER modify letter-spacing unless explicitly requested |
| 42 | |
| 43 | ### Text Styles |
| 44 | |
| 45 | | Style | Font | Size | Weight | Color | Count | |
| 46 | |-------|------|------|--------|-------|-------| |
| 47 | | `heading-1` | Inter | 70px | 700 | #2A2A2A | 1 | |
| 48 | | `text-23px` | Inter | 23px | semi_bold | #C1C1C1 | 1 | |
| 49 | | `text-22px` | Inter | 22px | semi_bold | #494949 | 1 | |
| 50 | | `text-21px` | Inter | 21px | 500 | #676767 | 1 | |
| 51 | | `text-21px` | Inter | 21px | semi_bold | #383838 | 1 | |
| 52 | | `text-19px` | Inter | 19px | 500 | #2C2C2C | 1 | |
| 53 | | `text-19px` | Inter | 19px | 500 | #3C3C3C | 1 | |
| 54 | | `text-19px` | Inter | 19px | 500 | #D4D4D4 | 1 | |
| 55 | | `text-18px` | Inter | 18px | 500 | #404040 | 1 | |
| 56 | | `body` | Inter | 16px | 400 | #A4A4A4 | 1 | |
| 57 | |
| 58 | ### Typography Reference |
| 59 | |
| 60 | **Font Families:** |
| 61 | - `Inter` (used 65x) |
| 62 | |
| 63 | **Font Sizes:** 8px, 9px, 10px, 11px, 12px, 13px, 14px, 15px, 16px, 18px, 19px, 21px, 22px, 23px, 70px |
| 64 | |
| 65 | ## Spacing |
| 66 | |
| 67 | - MUST use 4px grid for spacing |
| 68 | - SHOULD use spacing from scale: 1px, 2px, 3px, 4px, 5px, 6px, 7px, 9px |
| 69 | - SHOULD use 5px as default gap between elements |
| 70 | - NEVER use arbitrary spacing values (use design scale) |
| 71 | - SHOULD maintain consistent padding within containers |
| 72 | |
| 73 | ## Borders |
| 74 | |
| 75 | - MUST use border-radius from scale: 1px, 2px, 3px, 4px, 6px, 7px, 8px, 9px, 10px, 11px |
| 76 | - SHOULD limit border widths to: 1px, 3px |
| 77 | - SHOULD use 3px as default border-radius |
| 78 | - NEVER use arbitrary border-radius values (use design scale) |
| 79 | - SHOULD use subtle borders (1px) for element separation |
| 80 | |
| 81 | ### Border Radius Reference |
| 82 | |
| 83 | **Scale:** 1px, 2px, 3px, 4px, 6px, 7px, 8px, 9px, 10px, 11px |
| 84 | |
| 85 | ## Layout |
| 86 | |
| 87 | - MUST design for 1920px base viewport width |
| 88 | - SHOULD use consistent element widths: 16px, 8px, 11px, 10px, 52px |
| 89 | - SHOULD maintain text-heavy layout with clear hierarchy |
| 90 | - NEVER use `h-screen`, use `h-dvh` for full viewport height |
| 91 | - MUST respect `safe-area-inset` for fixed elements |
| 92 | - SHOULD use `size-*` for square elements instead of `w-*` + `h-*` |
| 93 | |
| 94 | ### Detected Layout Patterns |
| 95 | |
| 96 | - **Main Content**: width: 1565px, height: 814px |
| 97 | - **Main Content**: width: 1920px, height: 1080px |
| 98 | - **Main Content**: width: 1180px, height: 717px |
| 99 | - **Main Content**: width: 1178px, height: 701px |
| 100 | |
| 101 | ## Components |
| 102 | |
| 103 | ### Buttons |
| 104 | |
| 105 | | Variant | Background | Text | Border | Height | Radius | |
| 106 | |---------|------------|------|--------|--------|--------| |
| 107 | | Ghost | transparent | #6B6B6B | none | - | - | |
| 108 | |
| 109 | ## Interactive States |
| 110 | |
| 111 | ### Focus |
| 112 | |
| 113 | - MUST use `2px` outline with accent color (`#5E6AD2`) |
| 114 | - MUST use `2px` outline-offset |
| 115 | - NEVER remove focus indicators |
| 116 | |
| 117 | ### Hover |
| 118 | |
| 119 | - Buttons (primary): lighten background by 10% |
| 120 | - Buttons (secondary): use `#EDEDED` background |
| 121 | - List items: use `#EDEDED` background |
| 122 | |
| 123 | ### Disabled |
| 124 | |
| 125 | - MUST use `opacity: 0.5` |
| 126 | - MUST use `cursor: not-allowed` |
| 127 | |
| 128 | ## Interaction |
| 129 | |
| 130 | - MUST use an `AlertDialog` for destructive or irreversible actions |
| 131 | - SHOULD use structural skeletons for loading states |
| 132 | - MUST show errors next to where the action happens |
| 133 | - NEVER block paste in `input` or `textarea` elements |
| 134 | - MUST add an `aria-label` to icon-only buttons |
| 135 | |
| 136 | ## Animation |
| 137 | |
| 138 | - NEVER add animation unless it is explicitly requested |
| 139 | - MUST animate only compositor props (`transform`, `opacity`) |
| 140 | - NEVER animate layout properties (`width`, `height`, `top`, `left`, `m |
People who liked this also viewed
6 picksType
- web-design-guidelinesReview UI code for Web Interface Guidelines compliance. Use when asked to "review my UI", "check accessibility", "audit design", "review UX", or "check my site against best practices".SkillsJul 2026
- lark-slides飞书幻灯片：创建和编辑幻灯片。创建演示文稿、读取幻灯片内容、管理幻灯片页面（创建、删除、读取、局部替换）。当用户需要创建或编辑幻灯片、读取或修改单个页面时使用。当用户给出 doubao.com 的 /slides/ URL/token 时，也应直接使用本 skill，不要因为域名不是飞书而回退到 WebFetch；路由依据是 URL 路径模式和 token，而不是域名。不负责：云文档内容编辑（走 SkillsJul 2026
- design-taste-frontendTaste-Skill - gives your AI good taste. stops the AI from generating boring, generic slop SkillsJul 2026
- ui-ux-pro-maxUI/UX design intelligence for web and mobile. Searchable local database with 84 styles, 192 color palettes, 74 font pairings, 192 product types, 98 UX guidelines, 104 icon entries, 16 GSAP motion presSkillsJul 2026
- caveman-helpQuick-reference card for all caveman modes, skills, and commands. One-shot display, not a persistent mode. Trigger: /caveman-help, "caveman help", "what caveman commands", "how do I use caveman".SkillsJul 2026
- codebase-designShared vocabulary for designing deep modules. Use when the user wants to design or improve a module's interface, find deepening opportunities, decide where a seam goes, make code more testable or AI-nSkillsJul 2026
