chore: migrate to Tailwind CSS v4.0 (#632)

* chore: migrate PostCSS configuration to v4

* chore: update dependencies in package.json and package-lock.json

- Bump versions for autoprefixer, postcss, postcss-cli, prettier, and tailwindcss.
- Remove unused dependencies to streamline the project.

* chore: add @tailwindcss/postcss and update package-lock.json

* fix: update import paths in CSS files for consistency

* fix: change prefix from `hx-` to `hx:`

* chore: migrate primary color theme variables to CSS

* fix: remove unnecessary text decoration property from anchor styles in typography CSS

* fix: update CSS styles for improved consistency and clarity across components

* chore: clean up package.json and package-lock.json, remove unused dependencies, and update CSS imports for better organization

* fix: bulk replace prefix `hx-` with `hx:`

* fix: update tailwind css prefix

* fix: styling consistent issues

- steps counter fix in v4
- removed tailwind.css
- update hr border colors
- fix button cursor in v4
- fix border colors in various places

* fix: update class prefixes for consistency in menu and sidebar components

* fix: refine CSS classes and transitions for navbar and sidebar components

- Updated hamburger menu styles for improved animation and structure.
- Adjusted sidebar transition duration for smoother effects.
- Standardized class prefixes for consistency across components.

* fix: update border color in hero badge component for improved styling consistency

* fix: update tab button cursor style for improved user interaction

* chore: recompile css

* fix: dark mode color not applied for before / after elements

* fix: docs navigation

* chore: recompile CSS

* chore: update Tailwind CSS and PostCSS dependencies to version 4.0.17, recompile CSS, and add safelist

* fix: typo in class name and add back decoration-from-font for typography a tags

* fix: update class syntax for Tailwind CSS compatibility in mermaid code block

layouts/shortcodes/hextra/feature-card.html

@@ -17,20 +17,20 @@
 <a
   {{ with $link }}href="{{ $href }}" {{ with $external }} target="_blank" rel="noreferrer"{{ end }}{{ end }}
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
-  class="{{ $class }} hextra-feature-card not-prose hx-block hx-relative hx-overflow-hidden hx-rounded-3xl hx-border hx-border-gray-200 hover:hx-border-gray-300 dark:hx-border-neutral-800 dark:hover:hx-border-neutral-700 before:hx-pointer-events-none before:hx-absolute before:hx-inset-0 before:hx-bg-glass-gradient"
+  class="{{ $class }} hextra-feature-card not-prose hx:block hx:relative hx:overflow-hidden hx:rounded-3xl hx:border hx:border-gray-200 hx:hover:border-gray-300 hx:dark:border-neutral-800 hx:dark:hover:border-neutral-700 hx:before:pointer-events-none hx:before:absolute hx:before:inset-0 hx:before:bg-glass-gradient"
 >
-  <div class="hx-relative hx-w-full hx-p-6">
-    <h3 class="hx-text-2xl hx-font-medium hx-leading-6 hx-mb-2 hx-flex hx-items-center">
+  <div class="hx:relative hx:w-full hx:p-6">
+    <h3 class="hx:text-2xl hx:font-medium hx:leading-6 hx:mb-2 hx:flex hx:items-center">
       {{ with $icon -}}
-        <span class="hx-pr-2">
+        <span class="hx:pr-2">
           {{- partial "utils/icon.html" (dict "name" . "attributes" "height=1.5rem") -}}
         </span>
       {{ end -}}
       <span>{{ $title }}</span>
     </h3>
-    <p class="hx-text-gray-500 dark:hx-text-gray-400 hx-text-sm hx-leading-6">{{ $subtitle | markdownify }}</p>
+    <p class="hx:text-gray-500 hx:dark:text-gray-400 hx:text-sm hx:leading-6">{{ $subtitle | markdownify }}</p>
   </div>
   {{- with $image -}}
-    <img src="{{ . }}" class="hx-absolute hx-max-w-none {{ $imageClass }}" alt="{{ $title }}" />
+    <img src="{{ . }}" class="hx:absolute hx:max-w-none {{ $imageClass }}" alt="{{ $title }}" />
   {{- end -}}
 </a>

layouts/shortcodes/hextra/feature-grid.html

@@ -5,7 +5,7 @@
 
 
 <div
-  class="hextra-feature-grid hx-grid sm:max-lg:hx-grid-cols-2 max-sm:hx-grid-cols-1 hx-gap-4 hx-w-full not-prose"
+  class="hextra-feature-grid hx:grid hx:sm:max-lg:grid-cols-2 hx:max-sm:grid-cols-1 hx:gap-4 hx:w-full not-prose"
   {{ with $css }}style="{{ . | safeCSS }}"{{ end }}
 >
   {{ .Inner }}

layouts/shortcodes/hextra/hero-badge.html

@@ -7,7 +7,7 @@
 
 <a
   {{ if $link }}href="{{ $href }}"{{ end }}
-  class="{{ $class }} not-prose hx-inline-flex hx-items-center hx-rounded-full hx-gap-2 hx-px-3 hx-py-1 hx-text-xs hx-text-gray-600 dark:hx-text-gray-400 hx-bg-gray-100 dark:hx-bg-neutral-800 dark:hx-border-neutral-800 hx-border hover:hx-border-gray-400 dark:hover:hx-text-gray-50 dark:hover:hx-border-gray-600 hx-transition-all hx-ease-in hx-duration-200"
+  class="{{ $class }} not-prose hx:inline-flex hx:items-center hx:rounded-full hx:gap-2 hx:px-3 hx:py-1 hx:text-xs hx:text-gray-600 hx:dark:text-gray-400 hx:bg-gray-100 hx:dark:bg-neutral-800 hx:border-gray-200 hx:dark:border-neutral-800 hx:border hx:hover:border-gray-400 hx:dark:hover:text-gray-50 hx:dark:hover:border-gray-600 hx:transition-all hx:ease-in hx:duration-200"
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
   {{ if $external }}target="_blank" rel="noreferrer"{{ end -}}
 >

layouts/shortcodes/hextra/hero-button.html

@@ -7,7 +7,7 @@
 
 <a
   href="{{ $href }}"
-  class="not-prose hx-font-medium hx-cursor-pointer hx-px-6 hx-py-3 hx-rounded-full hx-text-center hx-text-white hx-inline-block hx-bg-primary-600 hover:hx-bg-primary-700 focus:hx-outline-none focus:hx-ring-4 focus:hx-ring-primary-300 dark:hx-bg-primary-600 dark:hover:hx-bg-primary-700 dark:focus:hx-ring-primary-800 hx-transition-all hx-ease-in hx-duration-200"
+  class="not-prose hx:font-medium hx:cursor-pointer hx:px-6 hx:py-3 hx:rounded-full hx:text-center hx:text-white hx:inline-block hx:bg-primary-600 hx:hover:bg-primary-700 hx:focus:outline-hidden hx:focus:ring-4 hx:focus:ring-primary-300 hx:dark:bg-primary-600 hx:dark:hover:bg-primary-700 hx:dark:focus:ring-primary-800 hx:transition-all hx:ease-in hx:duration-200"
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
   {{ if $external }}target="_blank" rel="noreferrer"{{ end -}}
 >

layouts/shortcodes/hextra/hero-container.html

@@ -18,18 +18,18 @@
 {{- end -}}
 
 <div
-  class="{{ $class }} hextra-feature-grid hx-grid sm:max-lg:hx-grid-cols-2 max-sm:hx-grid-cols-1 hx-gap-4 hx-w-full not-prose"
+  class="{{ $class }} hextra-feature-grid hx:grid hx:sm:max-lg:grid-cols-2 hx:max-sm:grid-cols-1 hx:gap-4 hx:w-full not-prose"
   {{ with $css }}style="{{ . | safeCSS }}"{{ end }}
 >
-  <div class="hx-w-full">
+  <div class="hx:w-full">
     {{ .Inner }}
   </div>
   {{- with $image }}
-  <div class="hx-mx-auto">
+  <div class="hx:mx-auto">
     <a
       {{ with $imageLink }}href="{{ $href }}" {{ with $imageLinkExternal }} target="_blank" rel="noreferrer"{{ end }}{{ end }}
       {{ with $imageStyle }}style="{{ . | safeCSS }}"{{ end }}
-      class="{{ $imageClass }} {{ if $imageCard }}hextra-feature-card not-prose hx-block hx-relative hx-p-6 hx-overflow-hidden hx-rounded-3xl hx-border hx-border-gray-200 hover:hx-border-gray-300 dark:hx-border-neutral-800 dark:hover:hx-border-neutral-700 before:hx-pointer-events-none before:hx-absolute before:hx-inset-0 before:hx-bg-glass-gradient{{ end }}"
+      class="{{ $imageClass }} {{ if $imageCard }}hextra-feature-card not-prose hx:block hx:relative hx:p-6 hx:overflow-hidden hx:rounded-3xl hx:border hx:border-gray-200 hx:hover:border-gray-300 hx:dark:border-neutral-800 hx:dark:hover:border-neutral-700 hx:before:pointer-events-none hx:before:absolute hx:before:inset-0 hx:before:bg-glass-gradient{{ end }}"
     >
       <img src="{{ $image }}" width="{{ $imageWidth }}" height="{{ $imageHeight }}" {{ with $imageTitle }}alt="{{ $imageTitle }}"{{ end }}/>
     </a>

layouts/shortcodes/hextra/hero-headline.html

@@ -2,7 +2,7 @@
 
 
 <h1
-  class="not-prose hx-text-4xl hx-font-bold hx-leading-none hx-tracking-tighter md:hx-text-5xl hx-py-2 hx-bg-clip-text hx-text-transparent hx-bg-gradient-to-r hx-from-gray-900 hx-to-gray-600 dark:hx-from-gray-100 dark:hx-to-gray-400"
+  class="not-prose hx:text-4xl hx:font-bold hx:leading-none hx:tracking-tighter hx:md:text-5xl hx:py-2 hx:bg-clip-text hx:text-transparent hx:bg-gradient-to-r hx:from-gray-900 hx:to-gray-600 hx:dark:from-gray-100 hx:dark:to-gray-400"
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
 >
   {{ .Inner | markdownify }}

layouts/shortcodes/hextra/hero-section.html

@@ -3,7 +3,7 @@
 {{- $size := cond (ge $heading 4) "xl" (cond (eq $heading 3) "2xl" "4xl") -}}
 
 <h{{ $heading }}
-  class="not-prose hx-text-{{ $size }} hx-font-bold hx-leading-none hx-tracking-tighter md:hx-text-3xl hx-py-2 hx-bg-clip-text hx-text-transparent hx-bg-gradient-to-r hx-from-gray-900 hx-to-gray-600 dark:hx-from-gray-100 dark:hx-to-gray-400"
+  class="not-prose hx:text-{{ $size }} hx:font-bold hx:leading-none hx:tracking-tighter hx:md:text-3xl hx:py-2 hx:bg-clip-text hx:text-transparent hx:bg-gradient-to-r hx:from-gray-900 hx:to-gray-600 hx:dark:from-gray-100 hx:dark:to-gray-400"
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
 >
   {{ .Inner | markdownify }}

layouts/shortcodes/hextra/hero-subtitle.html

@@ -2,7 +2,7 @@
 
 
 <p
-  class="not-prose hx-text-xl hx-text-gray-600 dark:hx-text-gray-400 sm:hx-text-xl"
+  class="not-prose hx:text-xl hx:text-gray-600 hx:dark:text-gray-400 hx:sm:text-xl"
   {{ with $style }}style="{{ . | safeCSS }}"{{ end }}
 >
   {{ .Inner | markdownify }}