fix: Remove unused files

style.css

@@ -16,8 +16,6 @@
     --foreground: #c5d5bc;
     --panel: #29372c;
     --border: #849979;
-    --accent: #849979;
-    --on-accent: #18251c;
 }
 :root[data-theme='light'] {
     color-scheme: light;
@@ -50,7 +48,6 @@ button, summary { cursor: pointer; }
 button:hover { border-color: var(--foreground); }
 button:disabled { opacity: 0.5; cursor: default; }
 :focus-visible { outline: 3px solid var(--foreground); outline-offset: 4px; }
-.primary { background: var(--accent); color: var(--on-accent); border-color: var(--accent); font-weight: bold; }
 .controls, .font-navigation, .actions, .preferences, .install-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 0.75rem; }
 .controls { margin-top: 1rem; }
 .controls label { flex: 1; min-width: 9rem; }