docs: Atlan blue theme, clean logo edges, remove Home nav entry

- Switch primary color to custom Atlan blue (#1B4F6A) matching logo text
- Remove 'Home' nav entry (homepage still served at root, no redundant tab/title)
- Reprocess logo with smooth alpha matting for clean transparent edges
- Accent color set to light blue matching logo's dot elements

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Aryamanz29

docs/assets/logo.png

@@ -1,10 +1,28 @@
-/* Hide site name text — logo image already contains the name */
+/* Atlan blue — matches the dark navy of "atlan" text in logo */
+:root,
+[data-md-color-scheme="default"] {
+  --md-primary-fg-color:        #1B4F6A;
+  --md-primary-fg-color--light: #256690;
+  --md-primary-fg-color--dark:  #123547;
+  --md-primary-bg-color:        #ffffff;
+  --md-primary-bg-color--light: rgba(255,255,255,0.7);
+  --md-accent-fg-color:         #5DD4F5;
+}
+
+[data-md-color-scheme="slate"] {
+  --md-primary-fg-color:        #1B4F6A;
+  --md-primary-fg-color--light: #256690;
+  --md-primary-fg-color--dark:  #123547;
+  --md-accent-fg-color:         #5DD4F5;
+}
+
+/* Hide site name text — logo already contains the name */
 .md-header__title {
   display: none;
 }
 
-/* Make logo bigger */
+/* Logo size and clean rendering in header */
 .md-header__button.md-logo img {
-  height: 2.5rem;
+  height: 2.2rem;
   width: auto;
 }

docs/assets/stylesheets/extra.css

@@ -12,14 +12,14 @@ theme:
   homepage: https://atlanhq.github.io/atlan-python/
   palette:
     - scheme: default
-      primary: deep purple
-      accent: indigo
+      primary: custom
+      accent: light blue
       toggle:
         icon: material/weather-night
         name: Switch to dark mode
     - scheme: slate
-      primary: deep purple
-      accent: indigo
+      primary: custom
+      accent: light blue
       toggle:
         icon: material/weather-sunny
         name: Switch to light mode
@@ -83,7 +83,6 @@ plugins:
             show_signature_annotations: true
 
 nav:
-  - Home: index.md
   - API Reference:
     - AtlanClient: api/client.md
     - Cache: api/cache.md