jarv.is/lib/styles/stitches.config.ts

import { createStitches, defaultThemeMap } from "@stitches/react";

// modified modern-normalize.css in object form:
// https://github.com/jakejarvis/stitches-normalize/blob/main/src/index.ts
import normalizeCss from "stitches-normalize";

// misc. helpers
import hexToRgba from "hex-to-rgba";

// web fonts
import { Inter, RobotoMono } from "./fonts";

export const { styled, css, getCssText, globalCss, keyframes, createTheme, theme } = createStitches({
  theme: {
    fonts: {
      sans: `"${Inter.name.regular}", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif`,
      sansVar: `"${Inter.name.variable}", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif`,
      mono: `"${RobotoMono.name.regular}", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier`,
      monoVar: `"${RobotoMono.name.variable}", ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", Menlo, Courier`,
    },

    colors: {
      backgroundInner: "#ffffff",
      backgroundOuter: "#fcfcfc",
      backgroundHeader: "rgba(252, 252, 252, 0.7)",
      text: "#202020",
      mediumDark: "#515151",
      medium: "#5e5e5e",
      mediumLight: "#757575",
      light: "#d2d2d2",
      kindaLight: "#e3e3e3",
      superLight: "#f4f4f4",
      superDuperLight: "#fbfbfb",
      link: "#0e6dc2",
      linkUnderline: "rgba(14, 109, 194, 0.4)",
      success: "#44a248",
      error: "#ff1b1b",
      warning: "#f78200",

      // Syntax Highlighting (light) - modified from Monokai Light: https://github.com/mlgill/pygments-style-monokailight
      codeText: "#313131",
      codeBackground: "#fdfdfd",
      codeComment: "#656e77",
      codeKeyword: "#029cb9",
      codeAttribute: "#70a800",
      codeNamespace: "#f92672",
      codeLiteral: "#ae81ff",
      codePunctuation: "#111111",
      codeVariable: "#d88200",
      codeAddition: "#44a248",
      codeDeletion: "#ff1b1b",
    },

    borderWidths: {
      underline: "calc(0.1em + 0.05rem)",
    },

    radii: {
      rounded: "0.65em",
    },
  },

  media: {
    // most responsive styles will go here:
    medium: "(max-width: 768px)",
    // used rarely only for SUPER narrow windows:
    small: "(max-width: 380px)",
    // ...note: things then COMPLETELY break at 300px.
  },

  utils: {
    setUnderlineVar: ({ color, alpha = 0.4 }) => ({
      // allow both pre-set rgba stitches variables and hex values
      $$underline: color.startsWith("#") ? hexToRgba(color, alpha) : color,
    }),
  },

  themeMap: {
    ...defaultThemeMap,
    backgroundSize: "borderWidths",
  },
});

export const darkTheme = createTheme({
  colors: {
    backgroundInner: "#1e1e1e",
    backgroundOuter: "#252525",
    backgroundHeader: "rgba(37, 37, 37, 0.85)",
    text: "#f1f1f1",
    mediumDark: "#d7d7d7",
    medium: "#b1b1b1",
    mediumLight: "#959595",
    light: "#646464",
    kindaLight: "#535353",
    superLight: "#272727",
    superDuperLight: "#1f1f1f",
    link: "#88c7ff",
    linkUnderline: "rgba(136, 199, 255, 0.4)",
    success: "#78df55",
    error: "#ff5151",
    warning: "#f2b702",

    // Syntax Highlighting (dark) - modified from Dracula: https://github.com/dracula/pygments
    codeText: "#e4e4e4",
    codeBackground: "#212121",
    codeComment: "#929292",
    codeKeyword: "#3b9dd2",
    codeAttribute: "#78df55",
    codeNamespace: "#f95757",
    codeLiteral: "#d588fb",
    codePunctuation: "#cccccc",
    codeVariable: "#fd992a",
    codeAddition: "#78df55",
    codeDeletion: "#ff5151",
  },
});

export const globalStyles = globalCss(
  // @ts-ignore
  ...normalizeCss({ systemFonts: false }),
  {
    "@font-face": [...Inter.family, ...RobotoMono.family],

    body: {
      backgroundColor: "$backgroundInner",
      fontFamily: "$sans",

      // light-dark theme switch fading
      transition: "background 0.25s ease",
    },

    "code, kbd, samp, pre": {
      fontFamily: "$mono",
    },

    // variable font support?
    "@supports (font-variation-settings: normal)": {
      body: {
        fontFamily: "$sansVar",
        fontOpticalSizing: "auto",
      },

      "code, kbd, samp, pre": {
        fontFamily: "$monoVar",
      },

      // Chrome doesn't automatically slant multi-axis Inter var, for some reason.
      // Adding "slnt" -10 fixes Chrome but then over-italicizes in Firefox. AHHHHHHHHHH.
      em: {
        fontStyle: "normal",
        fontVariationSettings: `"ital" 1, "slnt" -10`,

        // Roboto Mono doesn't have this problem, but the above fix breaks it, of course.
        "& code, & kbd, & samp, & pre": {
          fontStyle: "italic !important",
          fontVariationSettings: "initial !important",
        },
      },
    },
  }
);

// re-export hashed URLs of the most important variable fonts so we can preload them in pages/_document.tsx
export const preloadUrls = [...Inter.preloadUrls, ...RobotoMono.preloadUrls];