feat: Enhance navigation accessibility and update terminal commands

styles.css

@@ -35,8 +35,20 @@ img {
 }
 
 a {
-  color: inherit;
-  text-decoration: none;
+  color: var(--accent);
+  text-decoration: underline;
+  text-decoration-color: rgba(77, 213, 255, 0.6);
+}
+
+a:hover {
+  color: var(--text);
+  text-decoration-color: var(--text);
+}
+
+a:focus-visible,
+button:focus-visible {
+  outline: 2px solid rgba(77, 213, 255, 0.8);
+  outline-offset: 3px;
 }
 
 .hero {
@@ -68,6 +80,7 @@ a {
   color: var(--muted);
   font-weight: 500;
   transition: color 0.2s ease;
+  text-decoration: none;
 }
 
 .nav__links a:hover {
@@ -137,6 +150,16 @@ h3 {
   font-weight: 600;
   cursor: pointer;
   transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
+  text-decoration: none;
+}
+
+.btn:focus-visible {
+  outline: none;
+  box-shadow: 0 0 0 3px rgba(77, 213, 255, 0.35), 0 12px 30px rgba(109, 132, 255, 0.25);
+}
+
+.nav__toggle:focus-visible {
+  outline-offset: 6px;
 }
 
 .btn.primary {