diff --git a/app/static/styles.css b/app/static/styles.css
index 5ecf7d9..2792960 100644
--- a/app/static/styles.css
+++ b/app/static/styles.css
@@ -240,6 +240,13 @@ input[type="radio"] { accent-color: var(--control-accent); }
 }
 [data-theme="dark"] .btn-secondary:hover { background: #1f2b3f; }
 
+/* Generic disabled button state */
+.btn:disabled {
+  opacity: 0.55;
+  cursor: not-allowed;
+  filter: grayscale(0.15);
+}
+
 .actions {
   margin-top: 16px;
   display: flex;
@@ -537,8 +544,8 @@ input[type="radio"] { accent-color: var(--control-accent); }
   top: 20px;
   right: 20px;
   background: var(--card-bg);
-  border: 1px solid hsl(142, 71%, 45%);
-  background-color: hsl(142, 82%, 30%);
+  border: 1px solid hsl(142, 82%, 30%);
+  background-color: hsl(142, 71%, 45%);
   border-radius: 12px;
   box-shadow: 0 10px 40px rgba(0,0,0,0.2);
   padding: 16px 20px;