Update styles.css

styles.css

@@ -1,3 +1,4 @@
+/* styles.css */
 body {
     font-family: Arial, sans-serif;
     background: #f1f1f1;
@@ -9,27 +10,60 @@ h1 {
 }
 
 .container {
-    width: 70%;
+    max-width: 900px;
     margin: auto;
     background: white;
     padding: 20px;
     border-radius: 10px;
+    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
 }
 
 textarea {
     width: 100%;
-    height: 150px;
+    height: 180px;
+    padding: 10px;
+    border-radius: 6px;
+    border: 1px solid #ddd;
+    resize: vertical;
 }
 
 button {
     padding: 10px 20px;
     margin-top: 10px;
     cursor: pointer;
+    border-radius: 6px;
+    border: none;
+    background: #2f6fed;
+    color: white;
+    font-weight: 600;
+}
+
+button:disabled {
+    opacity: 0.6;
+    cursor: not-allowed;
+}
+
+.row {
+    display: flex;
+    gap: 10px;
+    align-items: center;
+    margin-top: 8px;
 }
 
 #summaryBox {
-    background: #eee;
+    background: #fafafa;
     padding: 15px;
     border-radius: 5px;
-    min-height: 80px;
+    min-height: 120px;
+    border: 1px solid #eee;
+    margin-top: 10px;
+}
+
+.error {
+    margin-top: 12px;
+    color: #a94442;
+    background: #f2dede;
+    padding: 10px;
+    border-radius: 6px;
+    border: 1px solid #ebccd1;
 }