diff --git a/web/src/App.tsx b/web/src/App.tsx
index f9f9460..caecd72 100644
--- a/web/src/App.tsx
+++ b/web/src/App.tsx
@@ -195,8 +195,8 @@ function App() {
         {hasCriticalEvents && (
           <div style={{
             position: 'fixed', top: 0, left: 0, right: 0, zIndex: 9999,
-            background: 'linear-gradient(90deg, #7f1d1d 0%, #dc2626 50%, #7f1d1d 100%)',
-            color: '#fff',
+            background: 'linear-gradient(90deg, var(--bl-danger-muted) 0%, var(--bl-danger) 50%, var(--bl-danger-muted) 100%)',
+            color: 'var(--primary-foreground)',
             padding: '6px 20px',
             textAlign: 'center',
             fontSize: 11,
@@ -233,10 +233,10 @@ function App() {
           }}>
             {simpleToasts.map((toast) => {
               const palette = toast.severity === 'ERROR'
-                ? { border: 'rgba(239,68,68,0.35)', bg: 'rgba(127,29,29,0.95)', fg: '#fff' }
+                ? { border: 'var(--bl-danger-border, var(--bl-danger))', bg: 'var(--bl-danger-muted)', fg: 'var(--foreground)' }
                 : toast.severity === 'WARN'
-                  ? { border: 'rgba(245,158,11,0.35)', bg: 'rgba(120,53,15,0.95)', fg: '#fff' }
-                  : { border: 'rgba(16,185,129,0.35)', bg: 'rgba(6,78,59,0.95)', fg: '#fff' };
+                  ? { border: 'var(--bl-warning-border, var(--bl-warning))', bg: 'var(--bl-warning-muted)', fg: 'var(--foreground)' }
+                  : { border: 'var(--bl-success-border, var(--bl-success))', bg: 'var(--bl-success-muted)', fg: 'var(--foreground)' };
               return (
                 <div
                   key={toast.id}
@@ -246,7 +246,7 @@ function App() {
                     color: palette.fg,
                     borderRadius: 16,
                     padding: '12px 14px',
-                    boxShadow: '0 12px 32px rgba(0,0,0,0.28)',
+                    boxShadow: 'var(--card-shadow)',
                     fontSize: 13,
                     lineHeight: 1.45,
                     backdropFilter: 'blur(8px)',