diff --git a/packages/tailwindcss-language-server/package.json b/packages/tailwindcss-language-server/package.json
index dd812e3c9..c4dc2984f 100644
--- a/packages/tailwindcss-language-server/package.json
+++ b/packages/tailwindcss-language-server/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/language-server",
-  "version": "0.14.12",
+  "version": "0.14.13",
   "description": "Tailwind CSS Language Server",
   "license": "MIT",
   "repository": {
@@ -40,7 +40,7 @@
     "@tailwindcss/forms": "0.5.3",
     "@tailwindcss/language-service": "workspace:*",
     "@tailwindcss/line-clamp": "0.4.2",
-    "@tailwindcss/oxide": "^4.0.15",
+    "@tailwindcss/oxide": "^4.1.0",
     "@tailwindcss/typography": "0.5.7",
     "@types/braces": "3.0.1",
     "@types/color-name": "^1.1.3",
@@ -67,7 +67,6 @@
     "dset": "3.1.4",
     "enhanced-resolve": "^5.16.1",
     "esbuild": "^0.25.0",
-    "fast-glob": "3.2.4",
     "find-up": "5.0.0",
     "jiti": "^2.3.3",
     "klona": "2.0.4",
@@ -84,7 +83,8 @@
     "rimraf": "3.0.2",
     "stack-trace": "0.0.10",
     "tailwindcss": "3.4.17",
-    "tailwindcss-v4": "npm:tailwindcss@4.0.6",
+    "tailwindcss-v4": "npm:tailwindcss@4.1.1",
+    "tinyglobby": "^0.2.12",
     "tsconfck": "^3.1.4",
     "tsconfig-paths": "^4.2.0",
     "typescript": "5.3.3",
diff --git a/packages/tailwindcss-language-server/src/language/css-server.ts b/packages/tailwindcss-language-server/src/language/css-server.ts
index a43910b22..73e967fcc 100644
--- a/packages/tailwindcss-language-server/src/language/css-server.ts
+++ b/packages/tailwindcss-language-server/src/language/css-server.ts
@@ -13,7 +13,7 @@ import {
   CompletionItemKind,
   Connection,
 } from 'vscode-languageserver/node'
-import { TextDocument } from 'vscode-languageserver-textdocument'
+import { Position, TextDocument } from 'vscode-languageserver-textdocument'
 import { Utils, URI } from 'vscode-uri'
 import { getLanguageModelCache } from './languageModelCache'
 import { Stylesheet } from 'vscode-css-languageservice'
@@ -121,6 +121,7 @@ export class CssServer {
     async function withDocumentAndSettings<T>(
       uri: string,
       callback: (result: {
+        original: TextDocument
         document: TextDocument
         settings: LanguageSettings | undefined
       }) => T | Promise<T>,
@@ -130,13 +131,64 @@ export class CssServer {
         return null
       }
       return await callback({
+        original: document,
         document: createVirtualCssDocument(document),
         settings: await getDocumentSettings(document),
       })
     }
 
+    function isInImportDirective(doc: TextDocument, pos: Position) {
+      let text = doc.getText({
+        start: { line: pos.line, character: 0 },
+        end: pos,
+      })
+
+      // Scan backwards to see if we're inside an `@import` directive
+      let foundImport = false
+      let foundDirective = false
+
+      for (let i = text.length - 1; i >= 0; i--) {
+        let char = text[i]
+        if (char === '\n') break
+
+        if (char === '(' && !foundDirective) {
+          if (text.startsWith(' source(', i - 7)) {
+            foundDirective = true
+          }
+
+          //
+          else if (text.startsWith(' theme(', i - 6)) {
+            foundDirective = true
+          }
+
+          //
+          else if (text.startsWith(' prefix(', i - 7)) {
+            foundDirective = true
+          }
+        }
+
+        //
+        else if (char === '@' && !foundImport) {
+          if (text.startsWith('@import ', i)) {
+            foundImport = true
+          }
+        }
+      }
+
+      return foundImport && foundDirective
+    }
+
     connection.onCompletion(async ({ textDocument, position }, _token) =>
-      withDocumentAndSettings(textDocument.uri, async ({ document, settings }) => {
+      withDocumentAndSettings(textDocument.uri, async ({ original, document, settings }) => {
+        // If we're inside source(…), prefix(…), or theme(…), don't show
+        // completions from the CSS language server
+        if (isInImportDirective(original, position)) {
+          return {
+            isIncomplete: false,
+            items: [],
+          }
+        }
+
         let result = await cssLanguageService.doComplete2(
           document,
           position,
diff --git a/packages/tailwindcss-language-server/src/project-locator.test.ts b/packages/tailwindcss-language-server/src/project-locator.test.ts
index 429f0b27b..d8c35479b 100644
--- a/packages/tailwindcss-language-server/src/project-locator.test.ts
+++ b/packages/tailwindcss-language-server/src/project-locator.test.ts
@@ -123,6 +123,7 @@ testFixture('v4/workspaces', [
       '{URL}/packages/admin/**',
       '{URL}/packages/admin/app.css',
       '{URL}/packages/admin/package.json',
+      '{URL}/packages/admin/tw.css',
     ],
   },
   {
@@ -147,8 +148,8 @@ testLocator({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "^4.0.15",
-          "@tailwindcss/oxide": "^4.0.15"
+          "tailwindcss": "4.1.0",
+          "@tailwindcss/oxide": "4.1.0"
         }
       }
     `,
@@ -164,7 +165,7 @@ testLocator({
       content: [
         '/*',
         '/package.json',
-        '/src/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/src/**/*.{aspx,astro,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
         '/src/components/example.html',
         '/src/index.html',
       ],
@@ -178,8 +179,8 @@ testLocator({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "^4.0.15",
-          "@tailwindcss/oxide": "^4.0.15"
+          "tailwindcss": "4.1.0",
+          "@tailwindcss/oxide": "4.1.0"
         }
       }
     `,
@@ -197,7 +198,7 @@ testLocator({
       content: [
         '/*',
         '/package.json',
-        '/src/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/src/**/*.{aspx,astro,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
         '/src/components/example.html',
         '/src/index.html',
       ],
@@ -211,8 +212,8 @@ testLocator({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "^4.0.15",
-          "@tailwindcss/oxide": "^4.0.15"
+          "tailwindcss": "4.1.0",
+          "@tailwindcss/oxide": "4.1.0"
         }
       }
     `,
@@ -245,36 +246,40 @@ testLocator({
       content: [
         '/*',
         '/admin/foo.bin',
-        '/admin/{**/*.bin,**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}}',
+        '/admin/tw.css',
+        '/admin/ui.css',
+        '/admin/{**/*.bin,**/*.{aspx,astro,bin,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}}',
         '/package.json',
         '/shared.html',
-        '/web/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/web/**/*.{aspx,astro,bin,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/web/app.css',
       ],
     },
     {
       config: '/web/app.css',
       content: [
         '/*',
-        '/admin/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/admin/**/*.{aspx,astro,bin,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+        '/admin/app.css',
+        '/admin/tw.css',
+        '/admin/ui.css',
         '/package.json',
         '/shared.html',
         '/web/bar.bin',
-        '/web/{**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue},*.bin}',
+        '/web/{**/*.{aspx,astro,bin,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue},*.bin}',
       ],
     },
   ],
 })
 
 testLocator({
-  // TODO: Enable once v4.1 is released
-  options: { skip: true },
   name: 'automatic content detection with negative custom sources',
   fs: {
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "0.0.0-insiders.3e53e25",
-          "@tailwindcss/oxide": "0.0.0-insiders.3e53e25"
+          "tailwindcss": "4.1.0",
+          "@tailwindcss/oxide": "4.1.0"
         }
       }
     `,
@@ -293,7 +298,7 @@ testLocator({
         '/*',
         '/package.json',
         '/src/index.html',
-        '/src/{**/*.html,**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}}',
+        '/src/{**/*.html,**/*.{aspx,astro,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}}',
       ],
     },
   ],
@@ -303,7 +308,7 @@ testFixture('v4/missing-files', [
   //
   {
     config: 'app.css',
-    content: ['{URL}/*', '{URL}/package.json'],
+    content: ['{URL}/*', '{URL}/i-exist.css', '{URL}/package.json'],
   },
 ])
 
@@ -314,7 +319,8 @@ testFixture('v4/path-mappings', [
     content: [
       '{URL}/*',
       '{URL}/package.json',
-      '{URL}/src/**/*.{aspx,astro,cjs,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+      '{URL}/src/**/*.{aspx,astro,cjs,css,cts,eex,erb,gjs,gts,haml,handlebars,hbs,heex,html,jade,js,json,jsx,liquid,md,mdx,mjs,mts,mustache,njk,nunjucks,php,pug,py,razor,rb,rhtml,rs,slim,svelte,tpl,ts,tsx,twig,vue}',
+      '{URL}/src/a/file.css',
       '{URL}/src/a/my-config.ts',
       '{URL}/src/a/my-plugin.ts',
       '{URL}/tsconfig.json',
@@ -326,7 +332,7 @@ testFixture('v4/invalid-import-order', [
   //
   {
     config: 'tailwind.css',
-    content: ['{URL}/*', '{URL}/package.json'],
+    content: ['{URL}/*', '{URL}/a.css', '{URL}/b.css', '{URL}/package.json'],
   },
 ])
 
@@ -338,7 +344,7 @@ testLocator({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "^4.0.2"
+          "tailwindcss": "4.1.0"
         }
       }
     `,
@@ -386,7 +392,7 @@ testLocator({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "4.0.6"
+          "tailwindcss": "4.1.0"
         }
       }
     `,
@@ -415,13 +421,47 @@ testLocator({
   },
   expected: [
     {
-      version: '4.0.6',
+      version: '4.1.0',
       config: '/src/articles/articles.css',
       content: [],
     },
   ],
 })
 
+testLocator({
+  name: 'Recursive symlinks do not cause infinite traversal loops',
+  fs: {
+    'src/a/b/c/index.css': css`
+      @import 'tailwindcss';
+    `,
+    'src/a/b/c/z': symlinkTo('src', 'dir'),
+    'src/a/b/x': symlinkTo('src', 'dir'),
+    'src/a/b/y': symlinkTo('src', 'dir'),
+    'src/a/b/z': symlinkTo('src', 'dir'),
+    'src/a/x': symlinkTo('src', 'dir'),
+
+    'src/b/c/d/z': symlinkTo('src', 'dir'),
+    'src/b/c/d/index.css': css``,
+    'src/b/c/x': symlinkTo('src', 'dir'),
+    'src/b/c/y': symlinkTo('src', 'dir'),
+    'src/b/c/z': symlinkTo('src', 'dir'),
+    'src/b/x': symlinkTo('src', 'dir'),
+
+    'src/c/d/e/z': symlinkTo('src', 'dir'),
+    'src/c/d/x': symlinkTo('src', 'dir'),
+    'src/c/d/y': symlinkTo('src', 'dir'),
+    'src/c/d/z': symlinkTo('src', 'dir'),
+    'src/c/x': symlinkTo('src', 'dir'),
+  },
+  expected: [
+    {
+      version: '4.0.6 (bundled)',
+      config: '/src/a/b/c/index.css',
+      content: [],
+    },
+  ],
+})
+
 // ---
 
 function testLocator({
diff --git a/packages/tailwindcss-language-server/src/project-locator.ts b/packages/tailwindcss-language-server/src/project-locator.ts
index c04738bf8..de562b633 100644
--- a/packages/tailwindcss-language-server/src/project-locator.ts
+++ b/packages/tailwindcss-language-server/src/project-locator.ts
@@ -1,7 +1,6 @@
-import * as os from 'node:os'
 import * as path from 'node:path'
 import * as fs from 'node:fs/promises'
-import glob from 'fast-glob'
+import { glob } from 'tinyglobby'
 import picomatch from 'picomatch'
 import type { Settings } from '@tailwindcss/language-service/src/util/state'
 import { CONFIG_GLOB, CSS_GLOB } from './lib/constants'
@@ -276,14 +275,14 @@ export class ProjectLocator {
 
   private async findConfigs(): Promise<ConfigEntry[]> {
     // Look for config files and CSS files
-    let files = await glob([`**/${CONFIG_GLOB}`, `**/${CSS_GLOB}`], {
+    let files = await glob({
+      patterns: [`**/${CONFIG_GLOB}`, `**/${CSS_GLOB}`],
       cwd: this.base,
       ignore: this.settings.tailwindCSS.files.exclude,
       onlyFiles: true,
       absolute: true,
-      suppressErrors: true,
+      followSymbolicLinks: true,
       dot: true,
-      concurrency: Math.max(os.cpus().length, 1),
     })
 
     let realpaths = await Promise.all(files.map((file) => fs.realpath(file)))
diff --git a/packages/tailwindcss-language-server/src/util/v4/design-system.ts b/packages/tailwindcss-language-server/src/util/v4/design-system.ts
index 05d2ecd3e..f312b95c0 100644
--- a/packages/tailwindcss-language-server/src/util/v4/design-system.ts
+++ b/packages/tailwindcss-language-server/src/util/v4/design-system.ts
@@ -219,6 +219,14 @@ export async function loadDesignSystem(
   Object.assign(design, {
     dependencies: () => dependencies,
 
+    // TODOs:
+    //
+    // 1. Remove PostCSS parsing — its roughly 60% of the processing time
+    // ex: compiling 19k classes take 650ms and 400ms of that is PostCSS
+    //
+    // - Replace `candidatesToCss` with a `candidatesToAst` API
+    // First step would be to convert to a PostCSS AST by transforming the nodes directly
+    // Then it would be to drop the PostCSS AST representation entirely in all v4 code paths
     compile(classes: string[]): (postcss.Root | null)[] {
       let css = design.candidatesToCss(classes)
       let errors: any[] = []
diff --git a/packages/tailwindcss-language-server/tests/colors/colors.test.js b/packages/tailwindcss-language-server/tests/colors/colors.test.js
index 5016bacc3..4780a4fb2 100644
--- a/packages/tailwindcss-language-server/tests/colors/colors.test.js
+++ b/packages/tailwindcss-language-server/tests/colors/colors.test.js
@@ -334,7 +334,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
@@ -373,7 +373,7 @@ defineTest({
 
     expect(c.project).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
diff --git a/packages/tailwindcss-language-server/tests/completions/completions.test.js b/packages/tailwindcss-language-server/tests/completions/completions.test.js
index dbe9a3522..ce5c7831e 100644
--- a/packages/tailwindcss-language-server/tests/completions/completions.test.js
+++ b/packages/tailwindcss-language-server/tests/completions/completions.test.js
@@ -313,8 +313,8 @@ withFixture('v4/basic', (c) => {
     let result = await completion({ lang, text, position, settings })
     let textEdit = expect.objectContaining({ range: { start: position, end: position } })
 
-    expect(result.items.length).toBe(13172)
-    expect(result.items.filter((item) => item.label.endsWith(':')).length).toBe(317)
+    expect(result.items.length).toBe(19283)
+    expect(result.items.filter((item) => item.label.endsWith(':')).length).toBe(346)
     expect(result).toEqual({
       isIncomplete: false,
       items: expect.arrayContaining([
@@ -488,7 +488,7 @@ withFixture('v4/basic', (c) => {
     })
 
     // Make sure `@slot` is NOT suggested by default
-    expect(result.items.length).toBe(7)
+    expect(result.items.length).toBe(8)
     expect(result.items).not.toEqual(
       expect.arrayContaining([
         expect.objectContaining({ kind: 14, label: '@slot', sortText: '-0000000' }),
@@ -627,7 +627,7 @@ withFixture('v4/basic', (c) => {
 
     expect(resolved).toEqual({
       ...item,
-      detail: 'background-color: oklch(0.637 0.237 25.331);',
+      detail: 'background-color: oklch(63.7% 0.237 25.331);',
       documentation: '#fb2c36',
     })
   })
@@ -692,7 +692,7 @@ defineTest({
     //                       ^
     let completion = await document.completions({ line: 0, character: 23 })
 
-    expect(completion?.items.length).toBe(12289)
+    expect(completion?.items.length).toBe(19236)
   },
 })
 
@@ -714,7 +714,7 @@ defineTest({
     //                      ^
     let completion = await document.completions({ line: 0, character: 22 })
 
-    expect(completion?.items.length).toBe(12289)
+    expect(completion?.items.length).toBe(19236)
   },
 })
 
@@ -736,7 +736,81 @@ defineTest({
     //                               ^
     let completion = await document.completions({ line: 0, character: 31 })
 
-    expect(completion?.items.length).toBe(12289)
+    expect(completion?.items.length).toBe(19236)
+  },
+})
+
+defineTest({
+  name: 'v4: Completions show after a variant arbitrary value, using prefixes',
+  fs: {
+    'app.css': css`
+      @import 'tailwindcss' prefix(tw);
+    `,
+  },
+  prepare: async ({ root }) => ({ client: await createClient({ root }) }),
+  handle: async ({ client }) => {
+    let document = await client.open({
+      lang: 'html',
+      text: '<div class="tw:data-[foo]:">',
+    })
+
+    // <div class="tw:data-[foo]:">
+    //                          ^
+    let completion = await document.completions({ line: 0, character: 26 })
+
+    expect(completion?.items.length).toBe(19236)
+  },
+})
+
+defineTest({
+  name: 'v4: Variant and utility suggestions show prefix when one has been typed',
+  fs: {
+    'app.css': css`
+      @import 'tailwindcss' prefix(tw);
+    `,
+  },
+  prepare: async ({ root }) => ({ client: await createClient({ root }) }),
+  handle: async ({ client }) => {
+    let document = await client.open({
+      lang: 'html',
+      text: '<div class="">',
+    })
+
+    // <div class="">
+    //            ^
+    let completion = await document.completions({ line: 0, character: 12 })
+
+    expect(completion?.items.length).toBe(19237)
+
+    // Verify that variants and utilities are all prefixed
+    let prefixed = completion.items.filter((item) => !item.label.startsWith('tw:'))
+    expect(prefixed).toHaveLength(0)
+  },
+})
+
+defineTest({
+  name: 'v4: Variant and utility suggestions hide prefix when it has been typed',
+  fs: {
+    'app.css': css`
+      @import 'tailwindcss' prefix(tw);
+    `,
+  },
+  prepare: async ({ root }) => ({ client: await createClient({ root }) }),
+  handle: async ({ client }) => {
+    let document = await client.open({
+      lang: 'html',
+      text: '<div class="tw:">',
+    })
+
+    // <div class="tw:">
+    //               ^
+    let completion = await document.completions({ line: 0, character: 15 })
+
+    expect(completion?.items.length).toBe(19236)
+
+    // Verify that no variants and utilities have prefixes
+    let prefixed = completion.items.filter((item) => item.label.startsWith('tw:'))
+    expect(prefixed).toHaveLength(0)
   },
 })
 
@@ -765,7 +839,7 @@ defineTest({
     //                    ^
     let completion = await document.completions({ line: 0, character: 20 })
 
-    expect(completion?.items.length).toBe(12289)
+    expect(completion?.items.length).toBe(19236)
   },
 })
 
@@ -796,7 +870,7 @@ defineTest({
     //                      ^
     let completion = await document.completions({ line: 1, character: 22 })
 
-    expect(completion?.items.length).toBe(12289)
+    expect(completion?.items.length).toBe(19236)
   },
 })
 
@@ -886,24 +960,24 @@ defineTest({
     //             ^
     let completionA = await document.completions({ line: 0, character: 13 })
 
-    expect(completionA?.items.length).toBe(12289)
+    expect(completionA?.items.length).toBe(19236)
 
     //   return <Test className={cn("")} />;
     //                              ^
     let completionB = await document.completions({ line: 3, character: 30 })
 
-    expect(completionB?.items.length).toBe(12289)
+    expect(completionB?.items.length).toBe(19236)
 
     //   return <Test className={cn("")} />;
     //                              ^
     let completionC = await document.completions({ line: 7, character: 30 })
 
-    expect(completionC?.items.length).toBe(12289)
+    expect(completionC?.items.length).toBe(19236)
 
     // let y = cva("");
     //             ^
     let completionD = await document.completions({ line: 10, character: 13 })
 
-    expect(completionD?.items.length).toBe(12289)
+    expect(completionD?.items.length).toBe(19236)
   },
 })
diff --git a/packages/tailwindcss-language-server/tests/css/css-server.test.ts b/packages/tailwindcss-language-server/tests/css/css-server.test.ts
index e8970e08a..388e94af7 100644
--- a/packages/tailwindcss-language-server/tests/css/css-server.test.ts
+++ b/packages/tailwindcss-language-server/tests/css/css-server.test.ts
@@ -689,3 +689,49 @@ defineTest({
     expect(await doc.diagnostics()).toEqual([])
   },
 })
+
+defineTest({
+  name: 'completions are hidden inside @import source(…)/theme(…)/prefix(…) functions',
+  prepare: async ({ root }) => ({
+    client: await createClient({
+      server: 'css',
+      root,
+    }),
+  }),
+  handle: async ({ client }) => {
+    let doc = await client.open({
+      lang: 'tailwindcss',
+      name: 'file-1.css',
+      text: css`
+        @import './file.css' source(none);
+        @import './file.css' theme(inline);
+        @import './file.css' prefix(tw);
+        @import './file.css' source(none) theme(inline) prefix(tw);
+      `,
+    })
+
+    // @import './file.css' source(none)
+    //                             ^
+    // @import './file.css' theme(inline);
+    //                            ^
+    // @import './file.css' prefix(tw);
+    //                             ^
+    let completionsA = await doc.completions({ line: 0, character: 29 })
+    let completionsB = await doc.completions({ line: 1, character: 28 })
+    let completionsC = await doc.completions({ line: 2, character: 29 })
+
+    expect(completionsA).toEqual({ isIncomplete: false, items: [] })
+    expect(completionsB).toEqual({ isIncomplete: false, items: [] })
+    expect(completionsC).toEqual({ isIncomplete: false, items: [] })
+
+    // @import './file.css' source(none) theme(inline) prefix(tw);
+    //                             ^           ^              ^
+    let completionsD = await doc.completions({ line: 3, character: 29 })
+    let completionsE = await doc.completions({ line: 3, character: 41 })
+    let completionsF = await doc.completions({ line: 3, character: 56 })
+
+    expect(completionsD).toEqual({ isIncomplete: false, items: [] })
+    expect(completionsE).toEqual({ isIncomplete: false, items: [] })
+    expect(completionsF).toEqual({ isIncomplete: false, items: [] })
+  },
+})
diff --git a/packages/tailwindcss-language-server/tests/env/v4.test.js b/packages/tailwindcss-language-server/tests/env/v4.test.js
index 632eb1a2a..dc33c79f2 100644
--- a/packages/tailwindcss-language-server/tests/env/v4.test.js
+++ b/packages/tailwindcss-language-server/tests/env/v4.test.js
@@ -21,7 +21,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
@@ -49,7 +49,7 @@ defineTest({
       },
     })
 
-    expect(completion?.items.length).toBe(12288)
+    expect(completion?.items.length).toBe(19235)
   },
 })
 
@@ -137,7 +137,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
@@ -188,7 +188,7 @@ defineTest({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "4.0.1"
+          "tailwindcss": "4.1.1"
         }
       }
     `,
@@ -205,7 +205,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.1',
+        version: '4.1.1',
         isDefaultVersion: false,
       },
     })
@@ -233,7 +233,7 @@ defineTest({
       },
     })
 
-    expect(completion?.items.length).toBe(12288)
+    expect(completion?.items.length).toBe(19235)
   },
 })
 
@@ -243,7 +243,7 @@ defineTest({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "4.0.1"
+          "tailwindcss": "4.1.1"
         }
       }
     `,
@@ -270,7 +270,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.1',
+        version: '4.1.1',
         isDefaultVersion: false,
       },
     })
@@ -322,7 +322,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
@@ -354,7 +354,7 @@ defineTest({
     'package.json': json`
       {
         "dependencies": {
-          "tailwindcss": "4.0.1"
+          "tailwindcss": "4.1.1"
         }
       }
     `,
@@ -831,7 +831,7 @@ defineTest({
 
     expect(await client.project()).toMatchObject({
       tailwind: {
-        version: '4.0.6',
+        version: '4.1.1',
         isDefaultVersion: true,
       },
     })
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package-lock.json
index 6275c3dc3..ab6be9775 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/basic/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package-lock.json
index 5089dc65d..b92fb8488 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/css-loading-js/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package-lock.json
index 555ee6602..f4352dc60 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/dependencies/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package-lock.json
index 24d978d86..0a12b281b 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/invalid-import-order/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package-lock.json
index ed4d2d9a8..c95b25d7b 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/missing-files/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package-lock.json
index c4664645d..58a06ceec 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/multi-config/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package-lock.json
index 651bf7c97..e6cc18e9a 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/path-mappings/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package-lock.json
index 1e5486aeb..34a2cc131 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package-lock.json
@@ -5,13 +5,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     }
   }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package.json
index b6cb53b1e..43b975c93 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/with-prefix/package.json
@@ -1,5 +1,5 @@
 {
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package-lock.json b/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package-lock.json
index b622b7b76..a88643baf 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package-lock.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package-lock.json
@@ -8,7 +8,7 @@
         "packages/*"
       ],
       "dependencies": {
-        "tailwindcss": "^4.0.15"
+        "tailwindcss": "4.1.1"
       }
     },
     "node_modules/@private/admin": {
@@ -32,9 +32,9 @@
       "link": true
     },
     "node_modules/tailwindcss": {
-      "version": "4.0.15",
-      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.0.15.tgz",
-      "integrity": "sha512-6ZMg+hHdMJpjpeCCFasX7K+U615U9D+7k5/cDK/iRwl6GptF24+I/AbKgOnXhVKePzrEyIXutLv36n4cRsq3Sg==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/tailwindcss/-/tailwindcss-4.1.1.tgz",
+      "integrity": "sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==",
       "license": "MIT"
     },
     "packages/admin": {
diff --git a/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package.json b/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package.json
index aa5e54db9..9291956a3 100644
--- a/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package.json
+++ b/packages/tailwindcss-language-server/tests/fixtures/v4/workspaces/package.json
@@ -3,6 +3,6 @@
     "packages/*"
   ],
   "dependencies": {
-    "tailwindcss": "^4.0.15"
+    "tailwindcss": "4.1.1"
   }
 }
diff --git a/packages/tailwindcss-language-server/tests/hover/hover.test.js b/packages/tailwindcss-language-server/tests/hover/hover.test.js
index ac97e414d..379f41996 100644
--- a/packages/tailwindcss-language-server/tests/hover/hover.test.js
+++ b/packages/tailwindcss-language-server/tests/hover/hover.test.js
@@ -1,5 +1,7 @@
-import { test } from 'vitest'
+import { expect, test } from 'vitest'
 import { withFixture } from '../common'
+import { css, defineTest } from '../../src/testing'
+import { createClient } from '../utils/client'
 
 withFixture('basic', (c) => {
   async function testHover(
@@ -214,7 +216,7 @@ withFixture('v4/basic', (c) => {
     text: '<div class="bg-red-500">',
     position: { line: 0, character: 13 },
     expected:
-      '.bg-red-500 {\n  background-color: var(--color-red-500) /* oklch(0.637 0.237 25.331) = #fb2c36 */;\n}',
+      '.bg-red-500 {\n  background-color: var(--color-red-500) /* oklch(63.7% 0.237 25.331) = #fb2c36 */;\n}',
     expectedRange: {
       start: { line: 0, character: 12 },
       end: { line: 0, character: 22 },
@@ -231,16 +233,15 @@ withFixture('v4/basic', (c) => {
     },
   })
 
-  test.todo('arbitrary value with theme function')
-  // testHover('arbitrary value with theme function', {
-  //   text: '<div class="p-[theme(spacing.4)]">',
-  //   position: { line: 0, character: 13 },
-  //   expected: '.p-\\[theme\\(spacing\\.4\\)\\] {\n' + '  padding: 1rem /* 16px */;\n' + '}',
-  //   expectedRange: {
-  //     start: { line: 0, character: 12 },
-  //     end: { line: 0, character: 32 },
-  //   },
-  // })
+  testHover('arbitrary value with theme function', {
+    text: '<div class="p-[theme(spacing.4)]">',
+    position: { line: 0, character: 13 },
+    expected: '.p-\\[theme\\(spacing\\.4\\)\\] {\n' + '  padding: 1rem /* 16px */;\n' + '}',
+    expectedRange: {
+      start: { line: 0, character: 12 },
+      end: { line: 0, character: 32 },
+    },
+  })
 
   testHover('arbitrary property', {
     text: '<div class="[text-wrap:balance]">',
@@ -397,7 +398,14 @@ withFixture('v4/basic', (c) => {
     expected: {
       contents: {
         kind: 'markdown',
-        value: ['```plaintext', '80rem /* 1280px */', '```'].join('\n'),
+        value: [
+          //
+          '```css',
+          '@theme {',
+          '  --breakpoint-xl: 80rem /* 1280px */;',
+          '}',
+          '```',
+        ].join('\n'),
       },
       range: {
         start: { line: 0, character: 23 },
@@ -545,3 +553,72 @@ withFixture('v4/path-mappings', (c) => {
     },
   })
 })
+
+defineTest({
+  name: 'Can hover showing theme values used in var(…) and theme(…) functions',
+  fs: {
+    'app.css': css`
+      @import 'tailwindcss';
+    `,
+  },
+
+  prepare: async ({ root }) => ({ client: await createClient({ root }) }),
+
+  handle: async ({ client }) => {
+    let doc = await client.open({
+      lang: 'css',
+      text: css`
+        .foo {
+          color: theme(--color-black);
+        }
+        .bar {
+          color: var(--color-black);
+        }
+      `,
+    })
+
+    //   color: theme(--color-black);
+    //                  ^
+    let hoverTheme = await doc.hover({ line: 1, character: 18 })
+
+    //   color: var(--color-black);
+    //                ^
+    let hoverVar = await doc.hover({ line: 4, character: 16 })
+
+    expect(hoverTheme).toEqual({
+      contents: {
+        kind: 'markdown',
+        value: [
+          //
+          '```css',
+          '@theme {',
+          '  --color-black: #000;',
+          '}',
+          '```',
+        ].join('\n'),
+      },
+      range: {
+        start: { line: 1, character: 15 },
+        end: { line: 1, character: 28 },
+      },
+    })
+
+    expect(hoverVar).toEqual({
+      contents: {
+        kind: 'markdown',
+        value: [
+          //
+          '```css',
+          '@theme {',
+          '  --color-black: #000;',
+          '}',
+          '```',
+        ].join('\n'),
+      },
+      range: {
+        start: { line: 4, character: 13 },
+        end: { line: 4, character: 26 },
+      },
+    })
+  },
+})
diff --git a/packages/tailwindcss-language-server/tests/prepare.mjs b/packages/tailwindcss-language-server/tests/prepare.mjs
index 19b2c6d5a..c529e6300 100644
--- a/packages/tailwindcss-language-server/tests/prepare.mjs
+++ b/packages/tailwindcss-language-server/tests/prepare.mjs
@@ -2,19 +2,23 @@ import { exec } from 'node:child_process'
 import * as path from 'node:path'
 import { fileURLToPath } from 'node:url'
 import { promisify } from 'node:util'
-import glob from 'fast-glob'
+import { glob } from 'tinyglobby'
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url))
 
-const fixtures = glob.sync(['tests/fixtures/*/package.json', 'tests/fixtures/v4/*/package.json'], {
-  cwd: path.resolve(__dirname, '..'),
+const root = path.resolve(__dirname, '..')
+
+const fixtures = await glob({
+  cwd: root,
+  patterns: ['tests/fixtures/*/package.json', 'tests/fixtures/v4/*/package.json'],
+  absolute: true,
 })
 
 const execAsync = promisify(exec)
 
 await Promise.all(
   fixtures.map(async (fixture) => {
-    console.log(`Installing dependencies for ${fixture}`)
+    console.log(`Installing dependencies for ${path.relative(root, fixture)}`)
 
     await execAsync('npm install', { cwd: path.dirname(fixture) })
   }),
diff --git a/packages/tailwindcss-language-service/package.json b/packages/tailwindcss-language-service/package.json
index 48fae16ee..23907838e 100644
--- a/packages/tailwindcss-language-service/package.json
+++ b/packages/tailwindcss-language-service/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@tailwindcss/language-service",
-  "version": "0.14.12",
+  "version": "0.14.13",
   "main": "dist/index.js",
   "typings": "dist/index.d.ts",
   "files": [
diff --git a/packages/tailwindcss-language-service/src/completionProvider.ts b/packages/tailwindcss-language-service/src/completionProvider.ts
index 5c0c55528..843e9a8e8 100644
--- a/packages/tailwindcss-language-service/src/completionProvider.ts
+++ b/packages/tailwindcss-language-service/src/completionProvider.ts
@@ -261,29 +261,25 @@ export function completionsFromClassList(
 
     // TODO: This is a bit of a hack
     if (prefix.length > 0) {
-      // No variants seen: suggest the prefix only
+      // No variants seen:
+      // - suggest the prefix as a variant
+      // - Modify the remaining items to include the prefix in the variant name
       if (existingVariants.length === 0) {
-        items = items.slice(0, 1)
+        items = items.map((item, idx) => {
+          if (idx === 0) return item
 
-        return withDefaults(
-          {
-            isIncomplete: false,
-            items,
-          },
-          {
-            data: {
-              ...(state.completionItemData ?? {}),
-              ...(important ? { important } : {}),
-              variants: existingVariants,
-            },
-            range: replacementRange,
-          },
-          state.editor.capabilities.itemDefaults,
-        )
+          item.label = `${prefix}:${item.label}`
+
+          if (item.textEditText) {
+            item.textEditText = `${prefix}:${item.textEditText}`
+          }
+
+          return item
+        })
       }
 
       // The first variant is not the prefix: don't suggest anything
-      if (existingVariants[0] !== prefix) {
+      if (existingVariants.length > 0 && existingVariants[0] !== prefix) {
         return null
       }
     }
@@ -304,6 +300,10 @@ export function completionsFromClassList(
               documentation = formatColor(color)
             }
 
+            if (prefix.length > 0 && existingVariants.length === 0) {
+              className = `${prefix}:${className}`
+            }
+
             items.push({
               label: className,
               kind,
diff --git a/packages/tailwindcss-language-service/src/diagnostics/getInvalidConfigPathDiagnostics.ts b/packages/tailwindcss-language-service/src/diagnostics/getInvalidConfigPathDiagnostics.ts
index d20655e33..76864281c 100644
--- a/packages/tailwindcss-language-service/src/diagnostics/getInvalidConfigPathDiagnostics.ts
+++ b/packages/tailwindcss-language-service/src/diagnostics/getInvalidConfigPathDiagnostics.ts
@@ -186,6 +186,11 @@ export function getInvalidConfigPathDiagnostics(
 
   findHelperFunctionsInDocument(state, document).forEach((helperFn) => {
     let base = helperFn.helper === 'theme' ? ['theme'] : []
+
+    // var(…) may not refer to theme values but other values in the cascade
+    // so they can't be unconditionally validated
+    if (helperFn.helper === 'var') return
+
     let result = validateConfigPath(state, helperFn.path, base)
 
     if (result.isValid === true) {
diff --git a/packages/tailwindcss-language-service/src/hoverProvider.ts b/packages/tailwindcss-language-service/src/hoverProvider.ts
index 1db68bed8..583cc80f9 100644
--- a/packages/tailwindcss-language-service/src/hoverProvider.ts
+++ b/packages/tailwindcss-language-service/src/hoverProvider.ts
@@ -53,6 +53,8 @@ async function provideCssHelperHover(
   for (let helperFn of helperFns) {
     if (!isWithinRange(position, helperFn.ranges.path)) continue
 
+    if (helperFn.helper === 'var' && !state.v4) continue
+
     let validated = validateConfigPath(
       state,
       helperFn.path,
@@ -67,8 +69,21 @@ async function provideCssHelperHover(
       value = addPixelEquivalentsToValue(value, settings.tailwindCSS.rootFontSize)
     }
 
+    let lines = ['```plaintext', value, '```']
+
+    if (state.v4 && helperFn.path.startsWith('--')) {
+      lines = [
+        //
+        '```css',
+        '@theme {',
+        `  ${helperFn.path}: ${value};`,
+        '}',
+        '```',
+      ]
+    }
+
     return {
-      contents: { kind: 'markdown', value: ['```plaintext', value, '```'].join('\n') },
+      contents: { kind: 'markdown', value: lines.join('\n') },
       range: helperFn.ranges.path,
     }
   }
diff --git a/packages/tailwindcss-language-service/src/util/color.ts b/packages/tailwindcss-language-service/src/util/color.ts
index 4b0d3b84d..a1a99d661 100644
--- a/packages/tailwindcss-language-service/src/util/color.ts
+++ b/packages/tailwindcss-language-service/src/util/color.ts
@@ -57,7 +57,7 @@ const colorRegex = new RegExp(
 )
 
 function getColorsInString(state: State, str: string): (culori.Color | KeywordColor)[] {
-  if (/(?:box|drop)-shadow/.test(str)) return []
+  if (/(?:box|drop)-shadow/.test(str) && !/--tw-drop-shadow/.test(str)) return []
 
   function toColor(match: RegExpMatchArray) {
     let color = match[1].replace(/var\([^)]+\)/, '1')
@@ -85,6 +85,17 @@ function getColorFromDecls(
     ) {
       return false
     }
+
+    // ignore mask-image & mask-composite
+    if (prop === 'mask-image' || prop === 'mask-composite') {
+      return false
+    }
+
+    // ignore `--tw-drop-shadow`
+    if (prop === '--tw-drop-shadow') {
+      return false
+    }
+
     return true
   })
 
@@ -177,8 +188,25 @@ function getColorFromRoot(state: State, css: postcss.Root): culori.Color | Keywo
   return getColorFromDecls(state, decls)
 }
 
+let isNegative = /^-/
+let isNumericUtility =
+  /^-?((min-|max-)?[wh]|z|start|order|opacity|rounded|row|col|size|basis|end|duration|ease|font|top|left|bottom|right|inset|leading|cursor|(space|scale|skew|rotate)-[xyz]|gap(-[xy])?|(scroll-)?[pm][trblxyse]?)-/
+let isMaskUtility = /^-?mask-/
+
+function isLikelyColorless(className: string) {
+  if (isNegative.test(className)) return true
+  // TODO: This is **not** correct but is intentional because there are 5k mask utilities and a LOT of them are colors
+  // This causes a massive slowdown when building the design system
+  if (isMaskUtility.test(className)) return true
+  if (isNumericUtility.test(className)) return true
+  return false
+}
+
 export function getColor(state: State, className: string): culori.Color | KeywordColor | null {
   if (state.v4) {
+    // FIXME: This is a performance optimization and not strictly correct
+    if (isLikelyColorless(className)) return null
+
     let css = state.designSystem.compile([className])[0]
 
     let color = getColorFromRoot(state, css)
diff --git a/packages/tailwindcss-language-service/src/util/find.ts b/packages/tailwindcss-language-service/src/util/find.ts
index 032187988..9118403da 100644
--- a/packages/tailwindcss-language-service/src/util/find.ts
+++ b/packages/tailwindcss-language-service/src/util/find.ts
@@ -405,7 +405,7 @@ export function findHelperFunctionsInRange(
 ): DocumentHelperFunction[] {
   const text = getTextWithoutComments(doc, 'css', range)
   let matches = findAll(
-    /(?<prefix>[\W])(?<helper>config|theme|--theme)(?<innerPrefix>\(\s*)(?<path>[^)]*?)\s*\)/g,
+    /(?<prefix>[\W])(?<helper>config|theme|--theme|var)(?<innerPrefix>\(\s*)(?<path>[^)]*?)\s*\)/g,
     text,
   )
 
@@ -450,10 +450,12 @@ export function findHelperFunctionsInRange(
       match.groups.helper.length +
       match.groups.innerPrefix.length
 
-    let helper: 'config' | 'theme' = 'config'
+    let helper: 'config' | 'theme' | 'var' = 'config'
 
     if (match.groups.helper === 'theme' || match.groups.helper === '--theme') {
       helper = 'theme'
+    } else if (match.groups.helper === 'var') {
+      helper = 'var'
     }
 
     return {
diff --git a/packages/tailwindcss-language-service/src/util/getVariantsFromClassName.ts b/packages/tailwindcss-language-service/src/util/getVariantsFromClassName.ts
index c30e729af..823b20f81 100644
--- a/packages/tailwindcss-language-service/src/util/getVariantsFromClassName.ts
+++ b/packages/tailwindcss-language-service/src/util/getVariantsFromClassName.ts
@@ -33,6 +33,12 @@ export function getVariantsFromClassName(
       // NOTE: This should never happen
       if (!state.designSystem) return false
 
+      let prefix = state.designSystem.theme.prefix ?? ''
+
+      if (prefix !== '') {
+        className = `${prefix}:${className}`
+      }
+
       // We don't use `compile()` so there's no overhead from PostCSS
       let compiled = state.designSystem.candidatesToCss([className])
 
diff --git a/packages/tailwindcss-language-service/src/util/rewriting/var-fallbacks.ts b/packages/tailwindcss-language-service/src/util/rewriting/var-fallbacks.ts
index 728b53bf9..91dcc91db 100644
--- a/packages/tailwindcss-language-service/src/util/rewriting/var-fallbacks.ts
+++ b/packages/tailwindcss-language-service/src/util/rewriting/var-fallbacks.ts
@@ -17,6 +17,14 @@ export function replaceCssVarsWithFallbacks(state: State, str: string): string {
         return fallback
       }
 
+      if (
+        name === '--tw-text-shadow-alpha' ||
+        name === '--tw-drop-shadow-alpha' ||
+        name === '--tw-shadow-alpha'
+      ) {
+        return '100%'
+      }
+
       // Don't touch it since there's no suitable replacement
       return null
     },
diff --git a/packages/tailwindcss-language-service/src/util/state.ts b/packages/tailwindcss-language-service/src/util/state.ts
index 119e5f59b..8c819eb8f 100644
--- a/packages/tailwindcss-language-service/src/util/state.ts
+++ b/packages/tailwindcss-language-service/src/util/state.ts
@@ -161,7 +161,7 @@ export type DocumentClassName = {
 }
 
 export type DocumentHelperFunction = {
-  helper: 'theme' | 'config'
+  helper: 'theme' | 'config' | 'var'
   path: string
   ranges: {
     full: Range
diff --git a/packages/vscode-tailwindcss/CHANGELOG.md b/packages/vscode-tailwindcss/CHANGELOG.md
index 31a8ca66a..1750eb693 100644
--- a/packages/vscode-tailwindcss/CHANGELOG.md
+++ b/packages/vscode-tailwindcss/CHANGELOG.md
@@ -2,7 +2,16 @@
 
 ## Prerelease
 
-- Nothing yet!
+- Only scan the file system once when needed ([#1287](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1287))
+- Don't follow recursive symlinks when searching for projects ([#1270](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1270))
+
+# 0.14.13
+
+- Hide completions from CSS language server inside `@import "…" source(…)` ([#1091](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1091))
+- Bump bundled v4 fallback to v4.1.1 ([#1294](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1294))
+- Show color swatches for most new v4.1 utilities ([#1294](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1294))
+- Support theme key hovers in the CSS `var()` function ([#1289](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1289))
+- Show theme key hovers inside `@theme` for better context and syntax highlighting ([#1289](https://github.com/tailwindlabs/tailwindcss-intellisense/pull/1289))
 
 # 0.14.12
 
diff --git a/packages/vscode-tailwindcss/package.json b/packages/vscode-tailwindcss/package.json
index 26af65d38..4f55fb4a6 100644
--- a/packages/vscode-tailwindcss/package.json
+++ b/packages/vscode-tailwindcss/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vscode-tailwindcss",
-  "version": "0.14.12",
+  "version": "0.14.13",
   "displayName": "Tailwind CSS IntelliSense",
   "description": "Intelligent Tailwind CSS tooling for VS Code",
   "author": "Brad Cornes <hello@bradley.dev>",
diff --git a/packages/vscode-tailwindcss/src/analyze.ts b/packages/vscode-tailwindcss/src/analyze.ts
new file mode 100644
index 000000000..ec9b2b9a3
--- /dev/null
+++ b/packages/vscode-tailwindcss/src/analyze.ts
@@ -0,0 +1,93 @@
+import { workspace, RelativePattern, CancellationToken, Uri, WorkspaceFolder } from 'vscode'
+import braces from 'braces'
+import { CONFIG_GLOB, CSS_GLOB } from '@tailwindcss/language-server/src/lib/constants'
+import { getExcludePatterns } from './exclusions'
+
+export interface SearchOptions {
+  folders: readonly WorkspaceFolder[]
+  token: CancellationToken
+}
+
+export async function anyWorkspaceFoldersNeedServer({ folders, token }: SearchOptions) {
+  // An explicit config file setting means we need the server
+  for (let folder of folders) {
+    let settings = workspace.getConfiguration('tailwindCSS', folder)
+    let configFilePath = settings.get('experimental.configFile')
+
+    // No setting provided
+    if (!configFilePath) continue
+
+    // Ths config file may be a string:
+    // A path pointing to a CSS or JS config file
+    if (typeof configFilePath === 'string') return true
+
+    // Ths config file may be an object:
+    // A map of config files to one or more globs
+    //
+    // If we get an empty object the language server will do a search anyway so
+    // we'll act as if no option was passed to be consistent
+    if (typeof configFilePath === 'object' && Object.values(configFilePath).length > 0) return true
+  }
+
+  let configs: Array<() => Thenable<Uri[]>> = []
+  let stylesheets: Array<() => Thenable<Uri[]>> = []
+
+  for (let folder of folders) {
+    let exclusions = getExcludePatterns(folder).flatMap((pattern) => braces.expand(pattern))
+    let exclude = `{${exclusions.join(',').replace(/{/g, '%7B').replace(/}/g, '%7D')}}`
+
+    configs.push(() =>
+      workspace.findFiles(
+        new RelativePattern(folder, `**/${CONFIG_GLOB}`),
+        exclude,
+        undefined,
+        token,
+      ),
+    )
+
+    stylesheets.push(() =>
+      workspace.findFiles(new RelativePattern(folder, `**/${CSS_GLOB}`), exclude, undefined, token),
+    )
+  }
+
+  // If we find a config file then we need the server
+  let configUrls = await Promise.all(configs.map((fn) => fn()))
+  for (let group of configUrls) {
+    if (group.length > 0) {
+      return true
+    }
+  }
+
+  // If we find a possibly-related stylesheet then we need the server
+  // The step is done last because it requires reading individual files
+  // to determine if the server should be started.
+  //
+  // This is also, unfortunately, prone to starting the server unncessarily
+  // in projects that don't use TailwindCSS so we do this one-by-one instead
+  // of all at once to keep disk I/O low.
+  let stylesheetUrls = await Promise.all(stylesheets.map((fn) => fn()))
+  for (let group of stylesheetUrls) {
+    for (let file of group) {
+      if (await fileMayBeTailwindRelated(file)) {
+        return true
+      }
+    }
+  }
+}
+
+let HAS_CONFIG = /@config\s*['"]/
+let HAS_IMPORT = /@import\s*['"]/
+let HAS_TAILWIND = /@tailwind\s*[^;]+;/
+let HAS_THEME = /@theme\s*\{/
+
+export async function fileMayBeTailwindRelated(uri: Uri) {
+  let buffer = await workspace.fs.readFile(uri)
+  let contents = buffer.toString()
+
+  return (
+    HAS_CONFIG.test(contents) ||
+    HAS_IMPORT.test(contents) ||
+    HAS_TAILWIND.test(contents) ||
+    HAS_THEME.test(contents)
+  )
+}
diff --git a/packages/vscode-tailwindcss/src/api.ts b/packages/vscode-tailwindcss/src/api.ts
new file mode 100644
index 000000000..d7f67de64
--- /dev/null
+++ b/packages/vscode-tailwindcss/src/api.ts
@@ -0,0 +1,49 @@
+import { workspace, CancellationTokenSource, OutputChannel, ExtensionContext, Uri } from 'vscode'
+import { anyWorkspaceFoldersNeedServer, fileMayBeTailwindRelated } from './analyze'
+
+interface ApiOptions {
+  context: ExtensionContext
+  outputChannel: OutputChannel
+}
+
+export async function createApi({ context, outputChannel }: ApiOptions) {
+  let folderAnalysis: Promise<boolean> | null = null
+
+  async function workspaceNeedsLanguageServer() {
+    if (folderAnalysis) return folderAnalysis
+
+    let source: CancellationTokenSource | null = new CancellationTokenSource()
+    source.token.onCancellationRequested(() => {
+      source?.dispose()
+      source = null
+
+      outputChannel.appendLine(
+        'Server was not started. Search for Tailwind CSS-related files was taking too long.',
+      )
+    })
+
+    // Cancel the search after roughly 15 seconds
+    setTimeout(() => source?.cancel(), 15_000)
+    context.subscriptions.push(source)
+
+    folderAnalysis ??= anyWorkspaceFoldersNeedServer({
+      token: source.token,
+      folders: workspace.workspaceFolders ?? [],
+    })
+
+    let result = await folderAnalysis
+    source?.dispose()
+    return result
+  }
+
+  async function stylesheetNeedsLanguageServer(uri: Uri) {
+    outputChannel.appendLine(`Checking if ${uri.fsPath} may be Tailwind-related…`)
+
+    return fileMayBeTailwindRelated(uri)
+  }
+
+  return {
+    workspaceNeedsLanguageServer,
+    stylesheetNeedsLanguageServer,
+  }
+}
diff --git a/packages/vscode-tailwindcss/src/exclusions.ts b/packages/vscode-tailwindcss/src/exclusions.ts
new file mode 100644
index 000000000..46ffd599a
--- /dev/null
+++ b/packages/vscode-tailwindcss/src/exclusions.ts
@@ -0,0 +1,49 @@
+import {
+  workspace,
+  type WorkspaceConfiguration,
+  type ConfigurationScope,
+  type WorkspaceFolder,
+} from 'vscode'
+import picomatch from 'picomatch'
+import * as path from 'node:path'
+
+function getGlobalExcludePatterns(scope: ConfigurationScope | null): string[] {
+  return Object.entries(workspace.getConfiguration('files', scope)?.get('exclude') ?? [])
+    .filter(([, value]) => value === true)
+    .map(([key]) => key)
+    .filter(Boolean)
+}
+
+export function getExcludePatterns(scope: ConfigurationScope | null): string[] {
+  return [
+    ...getGlobalExcludePatterns(scope),
+    ...(<string[]>workspace.getConfiguration('tailwindCSS', scope).get('files.exclude')).filter(
+      Boolean,
+    ),
+  ]
+}
+
+export function isExcluded(file: string, folder: WorkspaceFolder): boolean {
+  for (let pattern of getExcludePatterns(folder)) {
+    let matcher = picomatch(path.join(folder.uri.fsPath, pattern))
+
+    if (matcher(file)) {
+      return true
+    }
+  }
+
+  return false
+}
+
+export function mergeExcludes(
+  settings: WorkspaceConfiguration,
+  scope: ConfigurationScope | null,
+): any {
+  return {
+    ...settings,
+    files: {
+      ...settings.files,
+      exclude: getExcludePatterns(scope),
+    },
+  }
+}
diff --git a/packages/vscode-tailwindcss/src/extension.ts b/packages/vscode-tailwindcss/src/extension.ts
index a37486160..467d4e085 100755
--- a/packages/vscode-tailwindcss/src/extension.ts
+++ b/packages/vscode-tailwindcss/src/extension.ts
@@ -4,9 +4,7 @@ import type {
   TextDocument,
   WorkspaceFolder,
   ConfigurationScope,
-  WorkspaceConfiguration,
   Selection,
-  CancellationToken,
 } from 'vscode'
 import {
   workspace as Workspace,
@@ -16,8 +14,6 @@ import {
   SymbolInformation,
   Position,
   Range,
-  RelativePattern,
-  CancellationTokenSource,
 } from 'vscode'
 import type {
   DocumentFilter,
@@ -34,11 +30,11 @@ import { languages as defaultLanguages } from '@tailwindcss/language-service/src
 import * as semver from '@tailwindcss/language-service/src/util/semver'
 import isObject from '@tailwindcss/language-service/src/util/isObject'
 import namedColors from 'color-name'
-import picomatch from 'picomatch'
 import { CONFIG_GLOB, CSS_GLOB } from '@tailwindcss/language-server/src/lib/constants'
-import braces from 'braces'
 import normalizePath from 'normalize-path'
 import * as servers from './servers/index'
+import { isExcluded, mergeExcludes } from './exclusions'
+import { createApi } from './api'
 
 const colorNames = Object.keys(namedColors)
 
@@ -52,60 +48,6 @@ function getUserLanguages(folder?: WorkspaceFolder): Record<string, string> {
   return isObject(langs) ? langs : {}
 }
 
-function getGlobalExcludePatterns(scope: ConfigurationScope | null): string[] {
-  return Object.entries(Workspace.getConfiguration('files', scope)?.get('exclude') ?? [])
-    .filter(([, value]) => value === true)
-    .map(([key]) => key)
-    .filter(Boolean)
-}
-
-function getExcludePatterns(scope: ConfigurationScope | null): string[] {
-  return [
-    ...getGlobalExcludePatterns(scope),
-    ...(<string[]>Workspace.getConfiguration('tailwindCSS', scope).get('files.exclude')).filter(
-      Boolean,
-    ),
-  ]
-}
-
-function isExcluded(file: string, folder: WorkspaceFolder): boolean {
-  for (let pattern of getExcludePatterns(folder)) {
-    let matcher = picomatch(path.join(folder.uri.fsPath, pattern))
-
-    if (matcher(file)) {
-      return true
-    }
-  }
-
-  return false
-}
-
-function mergeExcludes(settings: WorkspaceConfiguration, scope: ConfigurationScope | null): any {
-  return {
-    ...settings,
-    files: {
-      ...settings.files,
-      exclude: getExcludePatterns(scope),
-    },
-  }
-}
-
-async function fileMayBeTailwindRelated(uri: Uri) {
-  let contents = (await Workspace.fs.readFile(uri)).toString()
-
-  let HAS_CONFIG = /@config\s*['"]/
-  let HAS_IMPORT = /@import\s*['"]/
-  let HAS_TAILWIND = /@tailwind\s*[^;]+;/
-  let HAS_THEME = /@theme\s*\{/
-
-  return (
-    HAS_CONFIG.test(contents) ||
-    HAS_IMPORT.test(contents) ||
-    HAS_TAILWIND.test(contents) ||
-    HAS_THEME.test(contents)
-  )
-}
-
 function selectionsAreEqual(
   aSelections: readonly Selection[],
   bSelections: readonly Selection[],
@@ -177,6 +119,12 @@ function resetActiveTextEditorContext(): void {
 
 export async function activate(context: ExtensionContext) {
   let outputChannel = Window.createOutputChannel(CLIENT_NAME)
+
+  let api = await createApi({
+    context,
+    outputChannel,
+  })
+
   context.subscriptions.push(outputChannel)
   context.subscriptions.push(
     commands.registerCommand('tailwindCSS.showOutput', () => {
@@ -266,10 +214,10 @@ export async function activate(context: ExtensionContext) {
   let configWatcher = Workspace.createFileSystemWatcher(`**/${CONFIG_GLOB}`, false, true, true)
 
   configWatcher.onDidCreate(async (uri) => {
+    if (currentClient) return
     let folder = Workspace.getWorkspaceFolder(uri)
-    if (!folder || isExcluded(uri.fsPath, folder)) {
-      return
-    }
+    if (!folder || isExcluded(uri.fsPath, folder)) return
+
     await bootWorkspaceClient()
   })
 
@@ -278,13 +226,12 @@ export async function activate(context: ExtensionContext) {
   let cssWatcher = Workspace.createFileSystemWatcher(`**/${CSS_GLOB}`, false, false, true)
 
   async function bootClientIfCssFileMayBeTailwindRelated(uri: Uri) {
+    if (currentClient) return
     let folder = Workspace.getWorkspaceFolder(uri)
-    if (!folder || isExcluded(uri.fsPath, folder)) {
-      return
-    }
-    if (await fileMayBeTailwindRelated(uri)) {
-      await bootWorkspaceClient()
-    }
+    if (!folder || isExcluded(uri.fsPath, folder)) return
+    if (!(await api.stylesheetNeedsLanguageServer(uri))) return
+
+    await bootWorkspaceClient()
   }
 
   cssWatcher.onDidCreate(bootClientIfCssFileMayBeTailwindRelated)
@@ -578,111 +525,34 @@ export async function activate(context: ExtensionContext) {
     return client
   }
 
-  async function bootClientIfNeeded(): Promise<void> {
-    if (currentClient) {
-      return
-    }
-
-    let source: CancellationTokenSource | null = new CancellationTokenSource()
-    source.token.onCancellationRequested(() => {
-      source?.dispose()
-      source = null
-      outputChannel.appendLine(
-        'Server was not started. Search for Tailwind CSS-related files was taking too long.',
-      )
-    })
-
-    // Cancel the search after roughly 15 seconds
-    setTimeout(() => source?.cancel(), 15_000)
-
-    if (!(await anyFolderNeedsLanguageServer(Workspace.workspaceFolders ?? [], source!.token))) {
-      source?.dispose()
-      return
-    }
-
-    source?.dispose()
-
-    await bootWorkspaceClient()
-  }
-
-  async function anyFolderNeedsLanguageServer(
-    folders: readonly WorkspaceFolder[],
-    token: CancellationToken,
-  ): Promise<boolean> {
-    for (let folder of folders) {
-      if (await folderNeedsLanguageServer(folder, token)) {
-        return true
-      }
-    }
-
-    return false
-  }
-
-  async function folderNeedsLanguageServer(
-    folder: WorkspaceFolder,
-    token: CancellationToken,
-  ): Promise<boolean> {
-    let settings = Workspace.getConfiguration('tailwindCSS', folder)
-    if (settings.get('experimental.configFile') !== null) {
-      return true
-    }
-
-    let exclude = `{${getExcludePatterns(folder)
-      .flatMap((pattern) => braces.expand(pattern))
-      .join(',')
-      .replace(/{/g, '%7B')
-      .replace(/}/g, '%7D')}}`
-
-    let configFiles = await Workspace.findFiles(
-      new RelativePattern(folder, `**/${CONFIG_GLOB}`),
-      exclude,
-      1,
-      token,
-    )
-
-    for (let file of configFiles) {
-      return true
-    }
-
-    let cssFiles = await Workspace.findFiles(
-      new RelativePattern(folder, `**/${CSS_GLOB}`),
-      exclude,
-      undefined,
-      token,
-    )
-
-    for (let file of cssFiles) {
-      outputChannel.appendLine(`Checking if ${file.fsPath} may be Tailwind-related…`)
-
-      if (await fileMayBeTailwindRelated(file)) {
-        return true
-      }
-    }
-
-    return false
-  }
-
+  /**
+   * Note that this method can fire *many* times even for documents that are
+   * not in a visible editor. It's critical that this doesn't start any
+   * expensive operations more than is necessary.
+   */
   async function didOpenTextDocument(document: TextDocument): Promise<void> {
     if (document.languageId === 'tailwindcss') {
       servers.css.boot(context, outputChannel)
     }
 
+    if (currentClient) return
+
     // We are only interested in language mode text
-    if (document.uri.scheme !== 'file') {
-      return
-    }
+    if (document.uri.scheme !== 'file') return
 
-    let uri = document.uri
-    let folder = Workspace.getWorkspaceFolder(uri)
+    let folder = Workspace.getWorkspaceFolder(document.uri)
 
     // Files outside a folder can't be handled. This might depend on the language.
     // Single file languages like JSON might handle files outside the workspace folders.
-    if (!folder) return
+    if (!folder || isExcluded(document.uri.fsPath, folder)) return
+
+    if (!(await api.workspaceNeedsLanguageServer())) return
 
-    await bootClientIfNeeded()
+    await bootWorkspaceClient()
   }
 
   context.subscriptions.push(Workspace.onDidOpenTextDocument(didOpenTextDocument))
+
   Workspace.textDocuments.forEach(didOpenTextDocument)
   context.subscriptions.push(
     Workspace.onDidChangeWorkspaceFolders(async () => {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 071263e70..c4e0edafc 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -51,8 +51,8 @@ importers:
         specifier: 0.4.2
         version: 0.4.2(tailwindcss@3.4.17)
       '@tailwindcss/oxide':
-        specifier: ^4.0.15
-        version: 4.0.15
+        specifier: ^4.1.0
+        version: 4.1.0
       '@tailwindcss/typography':
         specifier: 0.5.7
         version: 0.5.7(tailwindcss@3.4.17)
@@ -131,9 +131,6 @@ importers:
       esbuild:
         specifier: ^0.25.0
         version: 0.25.0
-      fast-glob:
-        specifier: 3.2.4
-        version: 3.2.4
       find-up:
         specifier: 5.0.0
         version: 5.0.0
@@ -183,8 +180,11 @@ importers:
         specifier: 3.4.17
         version: 3.4.17
       tailwindcss-v4:
-        specifier: npm:tailwindcss@4.0.6
-        version: tailwindcss@4.0.6
+        specifier: npm:tailwindcss@4.1.1
+        version: tailwindcss@4.1.1
+      tinyglobby:
+        specifier: ^0.2.12
+        version: 0.2.12
       tsconfck:
         specifier: ^3.1.4
         version: 3.1.4(typescript@5.3.3)
@@ -890,74 +890,74 @@ packages:
     peerDependencies:
       tailwindcss: '>=2.0.0 || >=3.0.0 || >=3.0.0-alpha.1'
 
-  '@tailwindcss/oxide-android-arm64@4.0.15':
-    resolution: {integrity: sha512-EBuyfSKkom7N+CB3A+7c0m4+qzKuiN0WCvzPvj5ZoRu4NlQadg/mthc1tl5k9b5ffRGsbDvP4k21azU4VwVk3Q==}
+  '@tailwindcss/oxide-android-arm64@4.1.0':
+    resolution: {integrity: sha512-UredFljuHey2Kh5qyYfQVBr0Xfq70ZE5Df6i5IubNYQGs2JXXT4VL0SIUjwzHx5W9T6t7dT7banunlV6lthGPQ==}
     engines: {node: '>= 10'}
     cpu: [arm64]
     os: [android]
 
-  '@tailwindcss/oxide-darwin-arm64@4.0.15':
-    resolution: {integrity: sha512-ObVAnEpLepMhV9VoO0JSit66jiN5C4YCqW3TflsE9boo2Z7FIjV80RFbgeL2opBhtxbaNEDa6D0/hq/EP03kgQ==}
+  '@tailwindcss/oxide-darwin-arm64@4.1.0':
+    resolution: {integrity: sha512-QHQ/46lRVwH9zEBNiRk8AJ3Af4pMq6DuZAI//q323qrPOXjsRdrhLsH9LUO3mqBfHr5EZNUxN3Am5vpO89sntw==}
     engines: {node: '>= 10'}
     cpu: [arm64]
     os: [darwin]
 
-  '@tailwindcss/oxide-darwin-x64@4.0.15':
-    resolution: {integrity: sha512-IElwoFhUinOr9MyKmGTPNi1Rwdh68JReFgYWibPWTGuevkHkLWKEflZc2jtI5lWZ5U9JjUnUfnY43I4fEXrc4g==}
+  '@tailwindcss/oxide-darwin-x64@4.1.0':
+    resolution: {integrity: sha512-lEMgYHCvQQ6x2KOZ4FwnPprwfnc+UnjzwXRqEYIhB/NlYvXQD1QMf7oKEDRqy94DiZaYox9ZRfG2YJOBgM0UkA==}
     engines: {node: '>= 10'}
     cpu: [x64]
     os: [darwin]
 
-  '@tailwindcss/oxide-freebsd-x64@4.0.15':
-    resolution: {integrity: sha512-6BLLqyx7SIYRBOnTZ8wgfXANLJV5TQd3PevRJZp0vn42eO58A2LykRKdvL1qyPfdpmEVtF+uVOEZ4QTMqDRAWA==}
+  '@tailwindcss/oxide-freebsd-x64@4.1.0':
+    resolution: {integrity: sha512-9fdImTc+2lA5yHqJ61oeTXfCtzylNOzJVFhyWwVQAJESJJbVCPnj6f+b+Zf/AYAdKQfS6FCThbPEahkQrDCgLQ==}
     engines: {node: '>= 10'}
     cpu: [x64]
     os: [freebsd]
 
-  '@tailwindcss/oxide-linux-arm-gnueabihf@4.0.15':
-    resolution: {integrity: sha512-Zy63EVqO9241Pfg6G0IlRIWyY5vNcWrL5dd2WAKVJZRQVeolXEf1KfjkyeAAlErDj72cnyXObEZjMoPEKHpdNw==}
+  '@tailwindcss/oxide-linux-arm-gnueabihf@4.1.0':
+    resolution: {integrity: sha512-HB0bTkUOuTLLSdadyRhKE9yps4/ZBjrojbHTPMSvvf/8yBLZRPpWb+A6IgW5R+2A2AL4KhVPgLwWfoXsErxJFg==}
     engines: {node: '>= 10'}
     cpu: [arm]
     os: [linux]
 
-  '@tailwindcss/oxide-linux-arm64-gnu@4.0.15':
-    resolution: {integrity: sha512-2NemGQeaTbtIp1Z2wyerbVEJZTkAWhMDOhhR5z/zJ75yMNf8yLnE+sAlyf6yGDNr+1RqvWrRhhCFt7i0CIxe4Q==}
+  '@tailwindcss/oxide-linux-arm64-gnu@4.1.0':
+    resolution: {integrity: sha512-+QtYCwvKLjC46h6RikKkpELJWrpiMMtgyK0aaqhwPLEx1icGgIhwz8dqrkAiqbFRE0KiRrE2aenhYoEkplyRmA==}
     engines: {node: '>= 10'}
     cpu: [arm64]
     os: [linux]
 
-  '@tailwindcss/oxide-linux-arm64-musl@4.0.15':
-    resolution: {integrity: sha512-342GVnhH/6PkVgKtEzvNVuQ4D+Q7B7qplvuH20Cfz9qEtydG6IQczTZ5IT4JPlh931MG1NUCVxg+CIorr1WJyw==}
+  '@tailwindcss/oxide-linux-arm64-musl@4.1.0':
+    resolution: {integrity: sha512-nApadFKM9GauzuPZPlt6TKfELavMHqJ0gVd+GYkYBTwr2t9KhgCAb2sKiFDDIhs1a7gOjsU7P1lEauv3iKFp+Q==}
     engines: {node: '>= 10'}
     cpu: [arm64]
     os: [linux]
 
-  '@tailwindcss/oxide-linux-x64-gnu@4.0.15':
-    resolution: {integrity: sha512-g76GxlKH124RuGqacCEFc2nbzRl7bBrlC8qDQMiUABkiifDRHOIUjgKbLNG4RuR9hQAD/MKsqZ7A8L08zsoBrw==}
+  '@tailwindcss/oxide-linux-x64-gnu@4.1.0':
+    resolution: {integrity: sha512-cp0Rf9Wit2kZHhrV8HIoDFD8dxU2+ZTCFCFbDj3a07pGyyPwLCJm5H5VipKXgYrBaLmlYu73ERidW0S5sdEXEg==}
     engines: {node: '>= 10'}
     cpu: [x64]
     os: [linux]
 
-  '@tailwindcss/oxide-linux-x64-musl@4.0.15':
-    resolution: {integrity: sha512-Gg/Y1XrKEvKpq6WeNt2h8rMIKOBj/W3mNa5NMvkQgMC7iO0+UNLrYmt6zgZufht66HozNpn+tJMbbkZ5a3LczA==}
+  '@tailwindcss/oxide-linux-x64-musl@4.1.0':
+    resolution: {integrity: sha512-4/wf42XWBJGXsOS6BhgPhdQbg/qyfdZ1nZvTL9sJoxYN+Ah+cfY5Dd7R0smzI8hmgCRt3TD1lYb72ChTyIA59w==}
     engines: {node: '>= 10'}
     cpu: [x64]
     os: [linux]
 
-  '@tailwindcss/oxide-win32-arm64-msvc@4.0.15':
-    resolution: {integrity: sha512-7QtSSJwYZ7ZK1phVgcNZpuf7c7gaCj8Wb0xjliligT5qCGCp79OV2n3SJummVZdw4fbTNKUOYMO7m1GinppZyA==}
+  '@tailwindcss/oxide-win32-arm64-msvc@4.1.0':
+    resolution: {integrity: sha512-caXJJ0G6NwGbcoxEYdH3MZYN84C3PldaMdAEPMU6bjJXURQlKdSlQ/Ecis7/nSgBkMkicZyhqWmb36Tw/BFSIw==}
     engines: {node: '>= 10'}
     cpu: [arm64]
     os: [win32]
 
-  '@tailwindcss/oxide-win32-x64-msvc@4.0.15':
-    resolution: {integrity: sha512-JQ5H+5MLhOjpgNp6KomouE0ZuKmk3hO5h7/ClMNAQ8gZI2zkli3IH8ZqLbd2DVfXDbdxN2xvooIEeIlkIoSCqw==}
+  '@tailwindcss/oxide-win32-x64-msvc@4.1.0':
+    resolution: {integrity: sha512-ZHXRXRxB7HBmkUE8U13nmkGGYfR1I2vsuhiYjeDDUFIYpk1BL6caU8hvzkSlL/X5CAQNdIUUJRGom5I0ZyfJOA==}
     engines: {node: '>= 10'}
     cpu: [x64]
     os: [win32]
 
-  '@tailwindcss/oxide@4.0.15':
-    resolution: {integrity: sha512-e0uHrKfPu7JJGMfjwVNyt5M0u+OP8kUmhACwIRlM+JNBuReDVQ63yAD1NWe5DwJtdaHjugNBil76j+ks3zlk6g==}
+  '@tailwindcss/oxide@4.1.0':
+    resolution: {integrity: sha512-A33oyZKpPFH08d7xkl13Dc8OTsbPhsuls0z9gUCxIHvn8c1BsUACddQxL6HwaeJR1fSYyXZUw8bdWcD8bVawpQ==}
     engines: {node: '>= 10'}
 
   '@tailwindcss/typography@0.5.7':
@@ -1480,10 +1480,6 @@ packages:
     resolution: {integrity: sha512-80F22aiJ3GLyVnS/B3HzgR6RelZVumzj9jkL0Rhz4h0xYbNW9PjlQz5h3J/SShErbXBc295vseR4/MIbVmUbeA==}
     engines: {node: '>=12.0.0'}
 
-  fast-glob@3.2.4:
-    resolution: {integrity: sha512-kr/Oo6PX51265qeuCYsyGypiO5uJFgBS0jksyG7FUeCyQzNwYnzrNIMR1NXfkZXsMYXYLRAHgISHBz8gQcxKHQ==}
-    engines: {node: '>=8'}
-
   fast-glob@3.3.2:
     resolution: {integrity: sha512-oX2ruAFQwf/Orj8m737Y5adxDQO0LAB7/S5MnxCdTNDd4p6BsyIVsv9JQsATbTSq8KHRpLwIHbVlUNatxd+1Ow==}
     engines: {node: '>=8.6.0'}
@@ -1494,6 +1490,14 @@ packages:
   fd-slicer@1.1.0:
     resolution: {integrity: sha512-cE1qsB/VwyQozZ+q1dGxR8LBYNZeofhEdUNGSMbQD3Gw2lAzX9Zb3uIU6Ebc/Fmyjo9AWWfnn0AUCHqtevs/8g==}
 
+  fdir@6.4.3:
+    resolution: {integrity: sha512-PMXmW2y1hDDfTSRc9gaXIuCCRpuoz3Kaz8cUelp3smouvfT632ozg2vrT6lJsHKKOF59YLbOGfAWGUcKEfRMQw==}
+    peerDependencies:
+      picomatch: ^3 || ^4
+    peerDependenciesMeta:
+      picomatch:
+        optional: true
+
   fill-range@7.1.1:
     resolution: {integrity: sha512-YsGpe3WHLK8ZYi4tWDg2Jy3ebRz2rXowDxnld4bkQB00cc/1Zw9AWnC0i9ztDJitivtQvaI9KaLyKrc+hBW0yg==}
     engines: {node: '>=8'}
@@ -1815,10 +1819,6 @@ packages:
     resolution: {integrity: sha512-8q7VEgMJW4J8tcfVPy8g09NcQwZdbwFEqhe/WZkoIzjn/3TGDwtOCYtXGxA3O8tPzpczCCDgv+P2P5y00ZJOOg==}
     engines: {node: '>= 8'}
 
-  micromatch@4.0.7:
-    resolution: {integrity: sha512-LPP/3KorzCwBxfeUuZmaR6bG2kdeHSbe0P2tY3FLRU4vYrjYz5hI4QZwV0njUx3jeuKe67YukQ1LSPZBKDqO/Q==}
-    engines: {node: '>=8.6'}
-
   micromatch@4.0.8:
     resolution: {integrity: sha512-PXwfBhYu0hBCPw8Dn0E+WDYb7af3dSLVWKi3HGv84IdF4TyFoC0ysxFd0Goxw7nSv4T/PzEJQxsYsEiFCKo2BA==}
     engines: {node: '>=8.6'}
@@ -2440,8 +2440,8 @@ packages:
     engines: {node: '>=14.0.0'}
     hasBin: true
 
-  tailwindcss@4.0.6:
-    resolution: {integrity: sha512-mysewHYJKaXgNOW6pp5xon/emCsfAMnO8WMaGKZZ35fomnR/T5gYnRg2/yRTTrtXiEl1tiVkeRt0eMO6HxEZqw==}
+  tailwindcss@4.1.1:
+    resolution: {integrity: sha512-QNbdmeS979Efzim2g/bEvfuh+fTcIdp1y7gA+sb6OYSW74rt7Cr7M78AKdf6HqWT3d5AiTb7SwTT3sLQxr4/qw==}
 
   tapable@2.2.1:
     resolution: {integrity: sha512-GNzQvQTOIP6RyTfE2Qxb8ZVlNmw0n88vp1szwWRimP02mnTsx3Wtn5qRdqY9w2XduFNUgvOwhNnQsjwCp+kqaQ==}
@@ -2467,6 +2467,10 @@ packages:
   tinyexec@0.3.2:
     resolution: {integrity: sha512-KQQR9yN7R5+OSwaK0XQoj22pwHoTlgYqmUscPYoknOoWCWfj/5/ABTMRi69FrKU5ffPVh5QcFikpWJI/P1ocHA==}
 
+  tinyglobby@0.2.12:
+    resolution: {integrity: sha512-qkf4trmKSIiMTs/E63cxH+ojC2unam7rJ0WrauAzpT3ECNTxGRMlaXxVbfxMUC/w0LaYk6jQ4y/nGR9uBO3tww==}
+    engines: {node: '>=12.0.0'}
+
   tinypool@1.0.2:
     resolution: {integrity: sha512-al6n+QEANGFOMf/dmUMsuS5/r9B06uwlyNjZZql/zv8J7ybHCgoihBNORZCY2mzUuAnomQa2JdhyHKzZxPCrFA==}
     engines: {node: ^18.0.0 || >=20.0.0}
@@ -3105,52 +3109,52 @@ snapshots:
     dependencies:
       tailwindcss: 3.4.17
 
-  '@tailwindcss/oxide-android-arm64@4.0.15':
+  '@tailwindcss/oxide-android-arm64@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-darwin-arm64@4.0.15':
+  '@tailwindcss/oxide-darwin-arm64@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-darwin-x64@4.0.15':
+  '@tailwindcss/oxide-darwin-x64@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-freebsd-x64@4.0.15':
+  '@tailwindcss/oxide-freebsd-x64@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-linux-arm-gnueabihf@4.0.15':
+  '@tailwindcss/oxide-linux-arm-gnueabihf@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-linux-arm64-gnu@4.0.15':
+  '@tailwindcss/oxide-linux-arm64-gnu@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-linux-arm64-musl@4.0.15':
+  '@tailwindcss/oxide-linux-arm64-musl@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-linux-x64-gnu@4.0.15':
+  '@tailwindcss/oxide-linux-x64-gnu@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-linux-x64-musl@4.0.15':
+  '@tailwindcss/oxide-linux-x64-musl@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-win32-arm64-msvc@4.0.15':
+  '@tailwindcss/oxide-win32-arm64-msvc@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide-win32-x64-msvc@4.0.15':
+  '@tailwindcss/oxide-win32-x64-msvc@4.1.0':
     optional: true
 
-  '@tailwindcss/oxide@4.0.15':
+  '@tailwindcss/oxide@4.1.0':
     optionalDependencies:
-      '@tailwindcss/oxide-android-arm64': 4.0.15
-      '@tailwindcss/oxide-darwin-arm64': 4.0.15
-      '@tailwindcss/oxide-darwin-x64': 4.0.15
-      '@tailwindcss/oxide-freebsd-x64': 4.0.15
-      '@tailwindcss/oxide-linux-arm-gnueabihf': 4.0.15
-      '@tailwindcss/oxide-linux-arm64-gnu': 4.0.15
-      '@tailwindcss/oxide-linux-arm64-musl': 4.0.15
-      '@tailwindcss/oxide-linux-x64-gnu': 4.0.15
-      '@tailwindcss/oxide-linux-x64-musl': 4.0.15
-      '@tailwindcss/oxide-win32-arm64-msvc': 4.0.15
-      '@tailwindcss/oxide-win32-x64-msvc': 4.0.15
+      '@tailwindcss/oxide-android-arm64': 4.1.0
+      '@tailwindcss/oxide-darwin-arm64': 4.1.0
+      '@tailwindcss/oxide-darwin-x64': 4.1.0
+      '@tailwindcss/oxide-freebsd-x64': 4.1.0
+      '@tailwindcss/oxide-linux-arm-gnueabihf': 4.1.0
+      '@tailwindcss/oxide-linux-arm64-gnu': 4.1.0
+      '@tailwindcss/oxide-linux-arm64-musl': 4.1.0
+      '@tailwindcss/oxide-linux-x64-gnu': 4.1.0
+      '@tailwindcss/oxide-linux-x64-musl': 4.1.0
+      '@tailwindcss/oxide-win32-arm64-msvc': 4.1.0
+      '@tailwindcss/oxide-win32-x64-msvc': 4.1.0
 
   '@tailwindcss/typography@0.5.7(tailwindcss@3.4.17)':
     dependencies:
@@ -3717,15 +3721,6 @@ snapshots:
 
   expect-type@1.2.0: {}
 
-  fast-glob@3.2.4:
-    dependencies:
-      '@nodelib/fs.stat': 2.0.5
-      '@nodelib/fs.walk': 1.2.8
-      glob-parent: 5.1.2
-      merge2: 1.4.1
-      micromatch: 4.0.7
-      picomatch: 2.3.1
-
   fast-glob@3.3.2:
     dependencies:
       '@nodelib/fs.stat': 2.0.5
@@ -3742,6 +3737,10 @@ snapshots:
     dependencies:
       pend: 1.2.0
 
+  fdir@6.4.3(picomatch@4.0.2):
+    optionalDependencies:
+      picomatch: 4.0.2
+
   fill-range@7.1.1:
     dependencies:
       to-regex-range: 5.0.1
@@ -4045,11 +4044,6 @@ snapshots:
 
   merge2@1.4.1: {}
 
-  micromatch@4.0.7:
-    dependencies:
-      braces: 3.0.3
-      picomatch: 2.3.1
-
   micromatch@4.0.8:
     dependencies:
       braces: 3.0.3
@@ -4710,7 +4704,7 @@ snapshots:
     transitivePeerDependencies:
       - ts-node
 
-  tailwindcss@4.0.6: {}
+  tailwindcss@4.1.1: {}
 
   tapable@2.2.1: {}
 
@@ -4743,6 +4737,11 @@ snapshots:
 
   tinyexec@0.3.2: {}
 
+  tinyglobby@0.2.12:
+    dependencies:
+      fdir: 6.4.3(picomatch@4.0.2)
+      picomatch: 4.0.2
+
   tinypool@1.0.2: {}
 
   tinyrainbow@2.0.0: {}