diff --git a/asciinema/theme/custom.css b/asciinema/theme/custom.css
index 0d281f8..ce9838f 100644
--- a/asciinema/theme/custom.css
+++ b/asciinema/theme/custom.css
@@ -35,11 +35,34 @@
 
 /* Global Styling */
 body {
-  background-color: var(--pivoine-bg-dark) !important;
+  background-color: var(--pivoine-bg-darker) !important;
   color: var(--pivoine-text-primary) !important;
   font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Roboto", "Helvetica Neue", Arial, sans-serif !important;
 }
 
+/* Main content area with better contrast */
+main,
+.main-content {
+  background-color: var(--pivoine-bg-dark) !important;
+  min-height: 100vh;
+}
+
+/* Headings with accent color */
+h1, h2, h3, h4, h5, h6,
+.h1, .h2, .h3, .h4, .h5, .h6 {
+  color: var(--pivoine-text-primary) !important;
+}
+
+h1, h2, .h1, .h2 {
+  border-bottom: 2px solid var(--pivoine-rose) !important;
+  padding-bottom: 8px !important;
+  margin-bottom: 16px !important;
+}
+
+.heading h2 {
+  color: var(--pivoine-rose-light) !important;
+}
+
 /* Header & Navigation */
 header,
 .header,
@@ -81,9 +104,8 @@ a:focus {
   text-decoration: underline;
 }
 
-button,
-.btn,
-.btn-light,
+/* Primary buttons and submit buttons */
+button:not(.btn-light):not(.btn-group .btn),
 input[type="submit"] {
   background-color: var(--pivoine-rose) !important;
   color: white !important;
@@ -96,28 +118,49 @@ input[type="submit"] {
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
 }
 
-button:hover,
-.btn:hover,
-.btn-light:hover,
+button:not(.btn-light):not(.btn-group .btn):hover,
 input[type="submit"]:hover {
   background-color: var(--pivoine-rose-light) !important;
   box-shadow: 0 4px 8px var(--pivoine-rose-glow);
   transform: translateY(-1px);
 }
 
-button:active,
-.btn:active,
-.btn-light:active,
+button:not(.btn-light):not(.btn-group .btn):active,
 input[type="submit"]:active {
   transform: translateY(0);
   box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
 }
 
-/* Active state for buttons */
-.btn.active,
+/* Filter buttons (btn-light in btn-group) */
+.btn-group .btn,
+.btn-light {
+  background-color: var(--pivoine-bg-lighter) !important;
+  color: var(--pivoine-text-primary) !important;
+  border: 1px solid var(--pivoine-border) !important;
+  border-radius: 4px !important;
+  padding: 6px 14px !important;
+  font-weight: 500 !important;
+  font-size: 0.9em !important;
+  cursor: pointer;
+  transition: all 0.2s ease;
+  box-shadow: none !important;
+}
+
+.btn-group .btn:hover,
+.btn-light:hover {
+  background-color: var(--pivoine-bg-dark) !important;
+  border-color: var(--pivoine-rose) !important;
+  color: var(--pivoine-rose-light) !important;
+  transform: none !important;
+}
+
+/* Active state for filter buttons */
+.btn-group .btn.active,
 .btn-light.active {
-  background-color: var(--pivoine-rose-dark) !important;
+  background-color: var(--pivoine-rose) !important;
+  border-color: var(--pivoine-rose) !important;
   color: white !important;
+  font-weight: 600 !important;
 }
 
 /* Cards & Containers */
@@ -424,6 +467,7 @@ code {
 }
 
 /* Logo & Branding */
+.navbar-brand img,
 .logo {
   filter: brightness(0) saturate(100%) invert(47%) sepia(74%) saturate(1845%) hue-rotate(319deg) brightness(93%) contrast(87%);
 }