diff --git a/static/css/main.css b/static/css/main.css
index 34140bb..0072b52 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -2956,6 +2956,16 @@ html {
     }
 }
 
+/* Very narrow mobile - Stack back-to-top above info button (left side) */
+@media (max-width: 483px) {
+    .back-to-top {
+        /* Move to left side, above info button */
+        left: 1.5rem !important;
+        right: auto !important;
+        bottom: 5.5rem !important; /* 4rem above info button (1.5rem + 50px + gap) */
+    }
+}
+
 /* ========================================
    Info Modal - Modern Glassmorphism Design
    ======================================== */