diff --git a/src/css/custom.css b/src/css/custom.css
index 4b8d60d8..872dd4a2 100644
--- a/src/css/custom.css
+++ b/src/css/custom.css
@@ -493,27 +493,33 @@ body {
 }
 
 [data-theme="dark"] {
-  --ifm-color-primary: #3cad6e;
-  --ifm-color-primary-dark: #359962;
-  --ifm-color-primary-darker: #33925d;
-  --ifm-color-primary-darkest: #2e8555;
-  --ifm-color-primary-light: #4db981;
-  --ifm-color-primary-lighter: #6dc998;
-  --ifm-color-primary-lightest: #b1e2c5;
+  --ifm-background-color: #000000;
+  --ifm-background-surface-color: #0a0a0a;
+  --ifm-navbar-background-color: #000000;
+  --ifm-footer-background-color: #000000;
+  --ifm-toc-border-color: #2a2a2a;
+  --ifm-menu-color-background-active: #111111;
+  --ifm-color-primary: #60a5fa;
+  --ifm-color-primary-dark: #3b82f6;
+  --ifm-color-primary-darker: #2563eb;
+  --ifm-color-primary-darkest: #1d4ed8;
+  --ifm-color-primary-light: #93c5fd;
+  --ifm-color-primary-lighter: #bfdbfe;
+  --ifm-color-primary-lightest: #dbeafe;
   --docusaurus-highlighted-code-line-bg: rgba(0, 0, 0, 0.3);
 
   /* Global dark theme tokens used across feature pages (courses, broadcasts, sponsors, etc.) */
   /* Backgrounds */
-  --dark-bg-primary: #0b1220;
-  /* base page background (deep navy) */
-  --dark-bg-secondary: #0f172a;
+  --dark-bg-primary: #000000;
+  /* base page background (black) */
+  --dark-bg-secondary: #0a0a0a;
   /* section alt background */
-  --dark-bg-tertiary: #111827;
+  --dark-bg-tertiary: #111111;
   /* subtle surfaces */
   /* Cards */
-  --dark-card-bg: #111827;
+  --dark-card-bg: #111111;
   /* card background */
-  --dark-card-hover-bg: #0f172a;
+  --dark-card-hover-bg: #1a1a1a;
   /* card hover background */
   /* Text */
   --dark-text-primary: #e5e7eb;
@@ -2174,7 +2180,7 @@ html[data-theme="dark"] {
 }
 
 /* TOC inner wrapper — sticky; border-left here so the vertical line
-  only spans the height of the TOC content, not the full page */
+   only spans the height of the TOC content, not the full page */
 .blog-wrapper .col.col--2>div {
   position: sticky !important;
   top: calc(var(--ifm-navbar-height, 60px) + 1rem) !important;