add Netlify badge in the footer

docs/src/css/footer.css

@@ -3,10 +3,22 @@
  * Footer styling for light and dark modes
  */
 
+/* CSS Variables for Netlify Badge */
+:root {
+  --netlify-badge-color: #8EFBF7;
+  --netlify-badge-bg-light: rgba(255, 255, 255, 0.1);
+  --netlify-badge-bg-light-hover: rgba(255, 255, 255, 0.15);
+  --netlify-badge-bg-dark: rgba(255, 255, 255, 0.08);
+  --netlify-badge-bg-dark-hover: rgba(255, 255, 255, 0.12);
+  --netlify-badge-spacing: 0.75rem;
+  --netlify-badge-gap-reduction: -0.5rem;
+}
+
 /* Light mode footer */
 .footer {
   background: linear-gradient(135deg, #1e3a8a 0%, #1e293b 100%);
   color: #ffffff;
+  position: relative;
 }
 
 .footer__title {
@@ -30,4 +42,179 @@
 
 [data-theme='dark'] .footer__link-item:hover {
   color: #60a5fa;
+}
+
+/* ============================================
+   NETLIFY BADGE STYLES
+   ============================================ */
+
+.netlifyBadge {
+  position: absolute;
+  bottom: 20px;
+  right: 20px;
+  z-index: 10;
+}
+
+.netlifyBadge a {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  padding: 8px 16px;
+  background: var(--netlify-badge-bg-light);
+  border: 1px solid var(--netlify-badge-color);
+  border-radius: 9999px;
+  color: #ffffff;
+  text-decoration: none;
+  font-size: 0.875rem;
+  font-weight: 500;
+  transition: all 0.2s ease;
+  box-shadow: 0 4px 12px rgba(142, 251, 247, 0.2), 0 2px 4px rgba(0, 0, 0, 0.1);
+  backdrop-filter: blur(12px) saturate(180%);
+  -webkit-backdrop-filter: blur(12px) saturate(180%);
+}
+
+.netlifyBadge a:hover {
+  background: var(--netlify-badge-bg-light-hover);
+  border-color: var(--netlify-badge-color);
+  transform: translateY(-1px);
+  box-shadow: 0 6px 16px rgba(142, 251, 247, 0.3), 0 2px 6px rgba(0, 0, 0, 0.15);
+  text-decoration: none;
+  color: #ffffff;
+}
+
+.netlifyBadge .badgeDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background: var(--netlify-badge-color);
+  flex-shrink: 0;
+  box-shadow: 0 0 8px rgba(142, 251, 247, 0.8), 0 0 12px rgba(142, 251, 247, 0.4);
+  display: inline-block;
+}
+
+.netlifyBadge .badgeText {
+  white-space: nowrap;
+}
+
+.netlifyBadge .badgeTextNetlify {
+  color: var(--netlify-badge-color);
+}
+
+/* Dark mode badge adjustments - keep glassmorphism */
+[data-theme='dark'] .netlifyBadge a {
+  background: var(--netlify-badge-bg-dark);
+  border: 1px solid var(--netlify-badge-color);
+}
+
+[data-theme='dark'] .netlifyBadge a:hover {
+  background: var(--netlify-badge-bg-dark-hover);
+  border-color: var(--netlify-badge-color);
+}
+
+/* ============================================
+   RESPONSIVE STYLES
+   ============================================ */
+
+/* Mobile: Badge appears below copyright inside footer */
+@media (max-width: 996px) {
+  /* Footer spacing reset */
+  .footer__bottom {
+    margin-bottom: 0;
+    padding-bottom: 0;
+  }
+
+  .footer {
+    padding-bottom: 0;
+    margin-bottom: 0;
+  }
+
+  /* Badge positioning for mobile */
+  .footer ~ .netlifyBadge,
+  .netlifyBadge {
+    position: static;
+    bottom: auto;
+    right: auto;
+    margin-top: var(--netlify-badge-gap-reduction);
+    margin-bottom: 0;
+    text-align: center;
+    padding-top: 0;
+    padding-bottom: var(--netlify-badge-spacing);
+    padding-left: 1rem;
+    padding-right: 1rem;
+    border-top: none;
+    width: 100%;
+    background: linear-gradient(135deg, #1e3a8a 0%, #1e293b 100%);
+  }
+
+  .footer ~ .netlifyBadge {
+    margin-bottom: 0;
+  }
+
+  [data-theme='dark'] .footer ~ .netlifyBadge,
+  [data-theme='dark'] .netlifyBadge {
+    background: #0a0e1a;
+  }
+
+  .netlifyBadge a {
+    padding: 8px 16px;
+    font-size: 0.875rem;
+    display: inline-flex;
+  }
+
+  .netlifyBadge .badgeDot {
+    width: 8px;
+    height: 8px;
+  }
+}
+
+@media (max-width: 768px) {
+  .footer {
+    padding-bottom: 0;
+    margin-bottom: 0;
+  }
+
+  .netlifyBadge {
+    margin-top: var(--netlify-badge-gap-reduction);
+    margin-bottom: 0;
+    padding-top: 0;
+    padding-bottom: var(--netlify-badge-spacing);
+  }
+
+  .netlifyBadge a {
+    padding: 6px 12px;
+    font-size: 0.75rem;
+  }
+
+  .netlifyBadge .badgeDot {
+    width: 6px;
+    height: 6px;
+  }
+}
+
+@media (max-width: 480px) {
+  .footer {
+    padding-bottom: 0;
+    margin-bottom: 0;
+  }
+
+  .netlifyBadge {
+    margin-top: var(--netlify-badge-gap-reduction);
+    margin-bottom: 0;
+    padding-top: 0;
+    padding-bottom: var(--netlify-badge-spacing);
+  }
+
+  .netlifyBadge .badgeText {
+    display: inline;
+  }
+
+  .netlifyBadge a {
+    padding: 6px 12px;
+    font-size: 0.75rem;
+  }
+
+  .netlifyBadge .badgeDot {
+    width: 6px;
+    height: 6px;
+  }
 }

docs/src/theme/Footer/index.js

@@ -0,0 +1,29 @@
+/**
+ * Footer Component
+ * Custom footer with Netlify badge
+ */
+
+import React from 'react';
+import Footer from '@theme-original/Footer';
+import styles from './styles.module.css';
+
+export default function FooterWrapper(props) {
+  return (
+    <div className={styles.footerWrapper}>
+      <Footer {...props} />
+      <div className="netlifyBadge">
+        <a 
+          href="https://www.netlify.com" 
+          target="_blank" 
+          rel="noopener noreferrer"
+        >
+          <span className="badgeDot"></span>
+          <span className="badgeText">
+            This site is powered by <span className="badgeTextNetlify">Netlify</span>
+          </span>
+        </a>
+      </div>
+    </div>
+  );
+}
+

docs/src/theme/Footer/styles.module.css

@@ -0,0 +1,13 @@
+/**
+ * Footer Component Styles (CSS Modules)
+ * 
+ * Note: Main badge styles are in footer.css for global access.
+ * This file only contains component-specific layout styles.
+ */
+
+.footerWrapper {
+  position: relative;
+  margin-bottom: 0;
+  padding-bottom: 0;
+}
+