diff --git a/src/app.css b/src/app.css
index 7011d4e..425eaf3 100644
--- a/src/app.css
+++ b/src/app.css
@@ -50,13 +50,19 @@
   /* Text — warm hierarchy */
   --color-text: #f0ece4;
   --color-text-secondary: #9a9486;
-  --color-text-tertiary: #716b60;
+  /* Phase 10a a11y P1: lifted from #716b60 to #8c8678 to clear AA 4.5:1 on
+     the dark surfaces this token is used on. Used as both decorative and
+     body-grade label, so the token has to meet AA. */
+  --color-text-tertiary: #8c8678;
 
-  /* Accent — warm amber/copper */
-  --color-accent: #e8a87c;
-  --color-accent-hover: #d4976a;
-  --color-accent-subtle: #e8a87c10;
-  --color-accent-glow: #e8a87c25;
+  /* Accent — warm amber/copper.
+     Phase 10a a11y P2: dark accent darkened from #e8a87c to #c98555 so the
+     "Browse Files" filled button (white text on accent fill) clears AA in
+     dark theme. Subtle / hover / glow recomputed off the new base. */
+  --color-accent: #c98555;
+  --color-accent-hover: #b8754a;
+  --color-accent-subtle: #c9855510;
+  --color-accent-glow: #c9855525;
 
   /* Semantic */
   --color-success: #7ec89a;
@@ -109,15 +115,22 @@
 
   --color-text: #1a1816;
   --color-text-secondary: #5c574d;
-  --color-text-tertiary: #8a8578;
+  /* Phase 10a a11y P1: darkened from #8a8578 to #6b6557 to clear AA 4.5:1
+     on cream/card surfaces in light theme. */
+  --color-text-tertiary: #6b6557;
 
-  --color-accent: #b87a4a;
-  --color-accent-hover: #a06b3e;
-  --color-accent-subtle: #b87a4a10;
-  --color-accent-glow: #b87a4a20;
+  /* Phase 10a a11y P2: darkened from #b87a4a to #a06a3e so white text on
+     accent fill (selected pills, primary buttons) clears AA. */
+  --color-accent: #a06a3e;
+  --color-accent-hover: #8a5a32;
+  --color-accent-subtle: #a06a3e10;
+  --color-accent-glow: #a06a3e20;
 
-  --color-success: #3d8a5a;
-  --color-danger: #c44d4d;
+  /* Phase 10a a11y G3: darkened success from #3d8a5a to #2f7549 so success
+     text on light surfaces clears AA. Phase 10a a11y FR3 / D4: darkened
+     danger from #c44d4d to #a83838 for the same reason. */
+  --color-success: #2f7549;
+  --color-danger: #a83838;
   --color-warning: #b89a3e;
 
   --color-sidebar: #f5f2ed;