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Website: add CSS custom properties for theme support(CSS variables only) #156

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a603b53
website: add CSS custom properties for theme support
Dec 4, 2025
8d4b265
feat: complete dark mode implementation
Jan 1, 2026
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180 changes: 180 additions & 0 deletions _includes/theme-toggle.html
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<style>
/* CSS Variables for Theming */
:root {
/* Light theme (default) */
--bg-primary: #ffffff;
--bg-secondary: #f8f9fa;
--bg-tertiary: #e9ecef;
--text-primary: #212529;
--text-secondary: #6c757d;
--link-color: #007bff;
--link-hover: #0056b3;
--border-color: #dee2e6;
--code-bg: #f8f9fa;
--header-bg: #343a40;
--header-text: #ffffff;
--footer-bg: #f8f9fa;
--footer-text: #6c757d;
--jumbotron-bg: #f8f9fa;
--jumbotron-text: #212529;
}

[data-theme="dark"] {
/* Dark theme */
--bg-primary: #121212;
--bg-secondary: #1e1e1e;
--bg-tertiary: #2d3748;
--text-primary: #e9ecef;
--text-secondary: #adb5bd;
--link-color: #4dabf7;
--link-hover: #74c0fc;
--border-color: #495057;
--code-bg: #2d3748;
--header-bg: #212529;
--header-text: #f8f9fa;
--footer-bg: #1a1a1a;
--footer-text: #adb5bd;
--jumbotron-bg: #2d3748;
--jumbotron-text: #e9ecef;
}

/* ========== APPLY THEME TO ALL ELEMENTS ========== */

/* Base elements */
body {
background-color: var(--bg-primary) !important;
color: var(--text-primary) !important;
transition: background-color 0.3s ease, color 0.3s ease !important;
}

/* All text elements */
h1, h2, h3, h4, h5, h6,
p, span, div, li, td, th {
color: var(--text-primary) !important;
}

/* Header/Navigation */
.navbar-inverse {
background-color: var(--header-bg) !important;
border-color: var(--border-color) !important;
}

.navbar-inverse .navbar-nav > li > a,
.navbar-inverse .navbar-brand,
.navbar-inverse .navbar-text {
color: var(--header-text) !important;
}

/* Links */
a {
color: var(--link-color) !important;
}

a:hover {
color: var(--link-hover) !important;
}

/* Main content */
.container {
background-color: var(--bg-primary) !important;
}

/* Jumbotron (hero section on homepage) */
.jumbotron {
background-color: var(--jumbotron-bg) !important;
color: var(--jumbotron-text) !important;
}

.jumbotron h1 {
color: var(--jumbotron-text) !important;
}

.jumbotron p {
color: var(--jumbotron-text) !important;
}

.jumbotron .btn-primary {
background-color: var(--link-color) !important;
border-color: var(--link-color) !important;
}

.jumbotron .btn-primary:hover {
background-color: var(--link-hover) !important;
border-color: var(--link-hover) !important;
}

/* Footer */
.site-footer {
background-color: var(--footer-bg) !important;
color: var(--footer-text) !important;
}

/* Code blocks */
pre, code {
background-color: var(--code-bg) !important;
border-color: var(--border-color) !important;
color: var(--text-primary) !important;
}

/* ========== TOGGLE BUTTON STYLES ========== */

.theme-toggle-item {
display: flex;
align-items: center;
margin-left: 10px;
}

.theme-toggle-wrapper {
display: flex;
align-items: center;
}

.theme-toggle {
background: var(--bg-secondary);
border: 1px solid var(--border-color);
border-radius: 50%;
width: 40px;
height: 40px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s ease;
color: var(--text-primary);
padding: 0;
position: relative;
z-index: 1000;
}

.theme-toggle:hover {
background: var(--bg-tertiary);
transform: scale(1.05);
}

.theme-toggle svg {
pointer-events: none;
}

.theme-icon-dark {
display: none;
}

[data-theme="dark"] .theme-icon-light {
display: none;
}

[data-theme="dark"] .theme-icon-dark {
display: block;
}

.navbar-nav .theme-toggle-item {
padding: 8px 0;
}

@media (max-width: 768px) {
.theme-toggle-item {
margin: 10px 15px;
justify-content: center;
}
}
</style>
96 changes: 96 additions & 0 deletions _includes/theme-toggle.html.backup
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<style>
/* CSS Variables for Theming */
:root {
--bg-primary: #ffffff;
--bg-secondary: #f8f9fa;
--bg-tertiary: #e9ecef;
--text-primary: #212529;
--text-secondary: #6c757d;
--link-color: #007bff;
--link-hover: #0056b3;
--border-color: #dee2e6;
--code-bg: #f8f9fa;
--header-bg: #343a40;
--header-text: #ffffff;
--footer-bg: #f8f9fa;
--footer-text: #6c757d;
}

[data-theme="dark"] {
/* Dark theme */
--bg-primary: #121212;
--bg-secondary: #1e1e1e;
--bg-tertiary: #2d3748;
--text-primary: #e9ecef;
--text-secondary: #adb5bd;
--link-color: #4dabf7;
--link-hover: #74c0fc;
--border-color: #495057;
--code-bg: #2d3748;
--header-bg: #212529;
--header-text: #f8f9fa;
--footer-bg: #1a1a1a;
--footer-text: #adb5bd;
}

/* Toggle button styles */
.theme-toggle-item {
display: flex;
align-items: center;
margin-left: 10px;
}

.theme-toggle-wrapper {
display: flex;
align-items: center;
}

.theme-toggle {
background: var(--bg-secondary);
border: 1px solid var(--border-color);
border-radius: 50%;
width: 40px;
height: 40px;
cursor: pointer;
display: flex;
align-items: center;
justify-content: center;
transition: all 0.3s ease;
color: var(--text-primary);
padding: 0;
position: relative;
z-index: 1000;
}

.theme-toggle:hover {
background: var(--bg-tertiary);
transform: scale(1.05);
}

.theme-toggle svg {
pointer-events: none;
}

.theme-icon-dark {
display: none;
}

[data-theme="dark"] .theme-icon-light {
display: none;
}

[data-theme="dark"] .theme-icon-dark {
display: block;
}

.navbar-nav .theme-toggle-item {
padding: 8px 0;
}

@media (max-width: 768px) {
.theme-toggle-item {
margin: 10px 15px;
justify-content: center;
}
}
</style>
15 changes: 14 additions & 1 deletion _includes/themes/apache/_navigation.html
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Expand Up @@ -25,7 +25,7 @@
<li><a href="{{ site.baseurl }}/docs/latest">Documentation</a></li>
<li><a href="{{ site.baseurl }}/articles">Articles</a></li>
<li><a href="{{ site.data.project.source_repository_os_mirror }}">GitHub</a></li>
<li id="apache">
<li id="apache">
<a href="#" data-toggle="dropdown" class="dropdown-toggle">Apache<b class="caret"></b></a>
<ul class="dropdown-menu">
<li><a href="https://www.apache.org/foundation/how-it-works.html">Apache Software Foundation</a></li>
Expand All @@ -37,6 +37,19 @@
<li><a href="https://www.apache.org/foundation/thanks.html">Thanks</a></li>
</ul>
</li>
<!-- Theme Toggle Button -->
<li class="theme-toggle-item">
<div class="theme-toggle-wrapper">
<button class="theme-toggle" id="themeToggle" aria-label="Toggle dark mode">
<svg class="theme-icon-light" width="16" height="16" viewBox="0 0 16 16" fill="currentColor">
<path d="M8 11a3 3 0 1 1 0-6 3 3 0 0 1 0 6zm0 1a4 4 0 1 0 0-8 4 4 0 0 0 0 8zM8 0a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 0zm0 13a.5.5 0 0 1 .5.5v2a.5.5 0 0 1-1 0v-2A.5.5 0 0 1 8 13zm8-5a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2a.5.5 0 0 1 .5.5zM3 8a.5.5 0 0 1-.5.5h-2a.5.5 0 0 1 0-1h2A.5.5 0 0 1 3 8zm10.657-5.657a.5.5 0 0 1 0 .707l-1.414 1.415a.5.5 0 1 1-.707-.708l1.414-1.414a.5.5 0 0 1 .707 0zm-9.193 9.193a.5.5 0 0 1 0 .707L3.05 13.657a.5.5 0 0 1-.707-.707l1.414-1.414a.5.5 0 0 1 .707 0zm9.193 2.121a.5.5 0 0 1-.707 0l-1.414-1.414a.5.5 0 0 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .707zM4.464 4.465a.5.5 0 0 1-.707 0L2.343 3.05a.5.5 0 1 1 .707-.707l1.414 1.414a.5.5 0 0 1 0 .708z"/>
</svg>
<svg class="theme-icon-dark" width="16" height="16" viewBox="0 0 16 16" fill="currentColor">
<path d="M6 .278a.768.768 0 0 1 .08.858 7.208 7.208 0 0 0-.878 3.46c0 4.021 3.278 7.277 7.318 7.277.527 0 1.04-.055 1.533-.16a.787.787 0 0 1 .81.316.733.733 0 0 1-.031.893A8.349 8.349 0 0 1 8.344 16C3.734 16 0 12.286 0 7.71 0 4.266 2.114 1.312 5.124.06A.752.752 0 0 1 6 .278z"/>
</svg>
</button>
</div>
</li>
</ul>
</nav><!--/.navbar-collapse -->
</div>
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23 changes: 6 additions & 17 deletions _includes/themes/apache/default.html
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Expand Up @@ -6,26 +6,14 @@
{% if page.description %}<meta name="description" content="{{ page.description }}">{% endif %}
<meta name="author" content="{{ site.author.name }}">

<!-- Enable responsive viewport -->
<meta name="viewport" content="width=device-width, initial-scale=1.0">

<!-- Le HTML5 shim, for IE6-8 support of HTML elements -->
<!--[if lt IE 9]>
<script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->

<!-- Le styles -->
<link href="{{ site.baseurl }}/assets/themes/apache/bootstrap/css/bootstrap.css" rel="stylesheet">
<link href="{{ site.baseurl }}/assets/themes/apache/css/style.css?body=1" rel="stylesheet" type="text/css">
<link href="{{ site.baseurl }}/assets/themes/apache/css/syntax.css" rel="stylesheet" type="text/css" media="screen" />
<link href="{{ site.baseurl }}/assets/themes/apache/css/demo.css" rel="stylesheet" type="text/css"/>
<!-- Le fav and touch icons -->
<!-- Update these with your own images
<link rel="shortcut icon" href="images/favicon.ico">
<link rel="apple-touch-icon" href="images/apple-touch-icon.png">
<link rel="apple-touch-icon" sizes="72x72" href="images/apple-touch-icon-72x72.png">
<link rel="apple-touch-icon" sizes="114x114" href="images/apple-touch-icon-114x114.png">
-->

<!-- ADD THEME TOGGLE CSS -->
{% include theme-toggle.html %}

</head>

Expand All @@ -44,9 +32,10 @@

{% include JB/analytics %}
<script src="{{ ASSET_PATH }}/jquery/jquery-2.1.1.min.js"></script>

<script src="{{ ASSET_PATH }}/bootstrap/js/bootstrap.min.js"></script>

<!-- ADD THEME TOGGLE JAVASCRIPT -->
<script src="{{ site.baseurl }}/assets/js/theme.js"></script>

</body>
</html>
</html>
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