remove unused css

src/lib/DatasetViewer.svelte

@@ -473,7 +473,6 @@
     color: #555;
   }
 
-  input,
   select {
     width: 100%;
     padding: 0.5rem;
@@ -485,7 +484,6 @@
     color: #333;
   }
 
-  input:disabled,
   select:disabled {
     background: #e9e9e9;
     cursor: not-allowed;
@@ -608,13 +606,6 @@
     border-top: 1px solid #e0e0e0;
   }
 
-  .comparative-note h4 {
-    margin: 0 0 0.75rem 0;
-    color: #555;
-    font-size: 1rem;
-    font-weight: 600;
-  }
-
   .markdown-content {
     line-height: 1.6;
     color: #333;
@@ -689,13 +680,6 @@
     }
   }
 
-  /* Highlighting for direct translation equivalents */
-  option.highlighted {
-    background-color: #ffd700;
-    font-weight: 600;
-    color: #000;
-  }
-
   .translation-hint {
     display: block;
     margin-top: 0.25rem;
@@ -710,13 +694,6 @@
     border-top: 1px solid #e0e0e0;
   }
 
-  .comparisons-section h4 {
-    margin: 0 0 1rem 0;
-    color: #555;
-    font-size: 1rem;
-    font-weight: 600;
-  }
-
   .comparisons-list {
     display: flex;
     flex-direction: column;
@@ -791,10 +768,6 @@
     text-align: left;
   }
 
-  .comparison-reasoning strong {
-    color: #333;
-  }
-
   /* Category filter pills */
   .category-filters {
     display: flex;