Use Geist as the default sans font family name

Google Fonts, Bunny Fonts and Fontsource all publish the font as "Geist". "Geist Sans" is only on Fontsource, so the default token fell back to system fonts with the other providers. "Geist Sans" stays as a fallback for existing Fontsource setups. Matches shadcn/ui, which loads "Geist".

site/src/components/StyleHead.astro

@@ -24,28 +24,28 @@ const styleUrls = {
 
 <style is:inline>
   @font-face {
-    font-family: "Geist Sans";
+    font-family: "Geist";
     src: url("/assets/fonts/geist/geist-sans-latin-400-normal.woff2") format("woff2");
     font-weight: 400;
     font-style: normal;
     font-display: swap;
   }
   @font-face {
-    font-family: "Geist Sans";
+    font-family: "Geist";
     src: url("/assets/fonts/geist/geist-sans-latin-500-normal.woff2") format("woff2");
     font-weight: 500;
     font-style: normal;
     font-display: swap;
   }
   @font-face {
-    font-family: "Geist Sans";
+    font-family: "Geist";
     src: url("/assets/fonts/geist/geist-sans-latin-600-normal.woff2") format("woff2");
     font-weight: 600;
     font-style: normal;
     font-display: swap;
   }
   @font-face {
-    font-family: "Geist Sans";
+    font-family: "Geist";
     src: url("/assets/fonts/geist/geist-sans-latin-700-normal.woff2") format("woff2");
     font-weight: 700;
     font-style: normal;

site/src/docs/customization.mdx

@@ -45,12 +45,12 @@ Learn more in the [shadcn/ui theming docs](https://ui.shadcn.com/docs/theming).
 
 ## Fonts
 
-Basecoat does not ship web font files by default. Its font tokens prefer [Geist Sans](https://fonts.google.com/specimen/Geist) and [Geist Mono](https://fonts.google.com/specimen/Geist+Mono) when those fonts are available, then fall back to the full Tailwind default sans and mono stacks.
+Basecoat does not ship web font files by default. Its font tokens prefer [Geist](https://fonts.google.com/specimen/Geist) and [Geist Mono](https://fonts.google.com/specimen/Geist+Mono) when those fonts are available, then fall back to the full Tailwind default sans and mono stacks.
 
 Install the fonts with Fontsource:
 
 ```bash
-npm install @fontsource/geist-sans @fontsource/geist-mono
+npm install @fontsource/geist @fontsource/geist-mono
 ```
 
 Then import the font files. Basecoat's default font tokens already reference Geist with full system fallbacks:
@@ -58,10 +58,10 @@ Then import the font files. Basecoat's default font tokens already reference Gei
 ```css
 @import "tailwindcss";
 @import "basecoat-css/sera";
-@import "@fontsource/geist-sans/400.css";
-@import "@fontsource/geist-sans/500.css";
-@import "@fontsource/geist-sans/600.css";
-@import "@fontsource/geist-sans/700.css";
+@import "@fontsource/geist/400.css";
+@import "@fontsource/geist/500.css";
+@import "@fontsource/geist/600.css";
+@import "@fontsource/geist/700.css";
 @import "@fontsource/geist-mono/400.css";
 @import "@fontsource/geist-mono/500.css";
 @import "@fontsource/geist-mono/600.css";

src/css/base/base.css

@@ -84,7 +84,7 @@
 }
 
 @theme {
-  --font-sans: "Geist Sans", ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
+  --font-sans: "Geist", "Geist Sans", ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
   --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
   --radius-sm: calc(var(--radius) - 4px);
   --radius-md: calc(var(--radius) - 2px);