feat: enhance navigation accessibility and styling by adding active state indicators and improving CSS for better visual clarity

Author: AsieduDevelopmentHub

assets/css/style.css

@@ -196,6 +196,26 @@ a:hover {
   color: #f8fafc;
 }
 
+.nav-desktop a.is-active {
+  color: #f8fafc;
+  font-weight: 700;
+  padding: 0.4rem 0.85rem;
+  margin: 0 -0.15rem;
+  border-radius: 999px;
+  background: rgba(255, 255, 255, 0.14);
+  border: 1px solid rgba(255, 255, 255, 0.28);
+  box-shadow:
+    0 0 0 1px rgba(103, 232, 249, 0.22),
+    0 6px 20px rgba(0, 0, 0, 0.25);
+  text-decoration: none;
+}
+
+.nav-desktop a.is-active:hover {
+  color: #fff;
+  background: rgba(255, 255, 255, 0.2);
+  text-decoration: none;
+}
+
 .nav-cta {
   display: flex;
   align-items: center;
@@ -267,6 +287,16 @@ a:hover {
   border-bottom: none;
 }
 
+.nav-panel a.is-active {
+  color: #ecfeff;
+  font-weight: 700;
+  border-left: 3px solid #67e8f9;
+  padding-left: 0.75rem;
+  margin-left: -0.05rem;
+  background: rgba(255, 255, 255, 0.06);
+  border-radius: 0 8px 8px 0;
+}
+
 @media (min-width: 768px) {
   .nav-desktop {
     display: flex;
@@ -287,9 +317,9 @@ main {
   z-index: 1;
 }
 
-/* Inner pages: default content band over the matrix */
+/* Inner pages: light content band over dark matrix */
 main > .section:not(.section-alt):not(.section-tint):not(.home-intro):not(.home-cta):not(.page-hero) {
-  background: rgba(248, 250, 252, 0.9);
+  background: rgba(248, 250, 252, 0.96);
   backdrop-filter: blur(12px);
 }
 
@@ -305,13 +335,8 @@ main > .section:not(.section-alt):not(.section-tint):not(.home-intro):not(.home-
   position: relative;
   overflow: hidden;
   z-index: 1;
-  background: linear-gradient(
-    145deg,
-    rgba(12, 18, 34, 0.78) 0%,
-    rgba(30, 27, 75, 0.74) 42%,
-    rgba(14, 116, 144, 0.68) 100%
-  );
-  background-size: 200% 200%;
+  background: var(--brand-hero-grad);
+  background-size: var(--brand-hero-grad-size);
   animation: hero-gradient 14s ease infinite;
 }
 
@@ -1105,13 +1130,9 @@ main > .section:not(.section-alt):not(.section-tint):not(.home-intro):not(.home-
 }
 
 .page-hero--mesh {
-  background: linear-gradient(
-    155deg,
-    rgba(30, 27, 75, 0.78) 0%,
-    rgba(49, 46, 129, 0.72) 50%,
-    rgba(14, 116, 144, 0.68) 100%
-  );
-  backdrop-filter: blur(8px);
+  background: var(--brand-hero-grad);
+  background-size: var(--brand-hero-grad-size);
+  animation: hero-gradient 14s ease infinite;
   padding-bottom: 3rem;
   margin-bottom: 0;
 }
@@ -1120,18 +1141,32 @@ main > .section:not(.section-alt):not(.section-tint):not(.home-intro):not(.home-
   content: "";
   position: absolute;
   inset: 0;
-  background: radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.4), transparent 55%);
+  background:
+    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(79, 70, 229, 0.38), transparent 58%),
+    radial-gradient(ellipse 60% 40% at 80% 60%, rgba(6, 182, 212, 0.3), transparent 52%),
+    radial-gradient(ellipse at 30% 20%, rgba(99, 102, 241, 0.25), transparent 55%);
   pointer-events: none;
 }
 
+.page-hero--mesh .container {
+  position: relative;
+  z-index: 1;
+}
+
 .page-hero--mesh h1 {
-  color: #f8fafc;
+  color: #ffffff;
   position: relative;
+  text-shadow:
+    0 2px 28px rgba(0, 0, 0, 0.55),
+    0 1px 3px rgba(0, 0, 0, 0.65);
 }
 
 .page-hero--mesh .lead {
-  color: rgba(226, 232, 240, 0.9);
+  color: #e2e8f0;
+  font-weight: 500;
   position: relative;
+  max-width: 42rem;
+  text-shadow: 0 1px 18px rgba(0, 0, 0, 0.5);
 }
 
 .page-hero h1 {

assets/js/main.js

@@ -287,13 +287,6 @@
       });
     }
 
-    function headerBandBottom() {
-      var el = document.querySelector(".site-header");
-      if (!el) return 0;
-      var r = el.getBoundingClientRect();
-      return Math.ceil(r.bottom);
-    }
-
     function randomBit() {
       return Math.random() < 0.5 ? "1" : "0";
     }
@@ -302,23 +295,17 @@
       var v = viewportSize();
       var w = pageBg ? v.w : canvas.clientWidth || v.w;
       var h = pageBg ? v.h : canvas.clientHeight || 420;
-      var headerBottom = pageBg ? headerBandBottom() : 0;
-      /* Fade trails toward page base (light) so black digits read on white gutters */
-      ctx.fillStyle = pageBg ? "rgba(241, 245, 249, 0.16)" : "rgba(3, 7, 18, 0.07)";
+      /* Dark trail so white glyphs stay readable with screen blend on dark body */
+      ctx.fillStyle = pageBg ? "rgba(2, 6, 14, 0.17)" : "rgba(3, 7, 18, 0.07)";
       ctx.fillRect(0, 0, w, h);
 
       ctx.font =
         "bold 15px ui-monospace, SFMono-Regular, Menlo, Consolas, 'Cascadia Code', monospace";
       for (var i = 0; i < drops.length; i++) {
         var x = i * cell + Math.floor(cell * 0.35);
         var y = drops[i];
-        var inHeader = pageBg && headerBottom > 0 && y >= 0 && y <= headerBottom;
-        /* Header band: bright 0/1 for the strip under .site-header. Elsewhere: black on light areas. */
-        if (inHeader) {
-          ctx.fillStyle = "rgba(255, 255, 255, 0.96)";
-        } else {
-          ctx.fillStyle = "rgba(15, 23, 42, 0.78)";
-        }
+        var g = 248 - (i % 5) * 8;
+        ctx.fillStyle = "rgba(" + g + ", 255, " + (245 - (i % 3) * 6) + ", 0.9)";
         ctx.fillText(randomBit(), x, y);
         drops[i] = y + cell * 0.85 + Math.random() * 12;
         if (drops[i] > h + 48 && Math.random() > 0.965) {
@@ -384,10 +371,26 @@
     });
   }
 
+  function markActiveNav() {
+    var p = (location.pathname || "").replace(/\\/g, "/").toLowerCase();
+    var slug = "home";
+    if (p.indexOf("download.html") !== -1) slug = "download";
+    else if (p.indexOf("about.html") !== -1) slug = "about";
+    else if (p.indexOf("docs.html") !== -1) slug = "docs";
+
+    document.querySelectorAll("a[data-nav]").forEach(function (a) {
+      if (a.getAttribute("data-nav") === slug) {
+        a.classList.add("is-active");
+        a.setAttribute("aria-current", "page");
+      }
+    });
+  }
+
   document.querySelectorAll("[data-matrix]").forEach(function (el) {
     startMatrix(el);
   });
   document.querySelectorAll("[data-tilt]").forEach(wireTilt);
   wireDashboardPreview();
+  markActiveNav();
   initGsapAnimations();
 })();

index.html

@@ -36,10 +36,10 @@
           <span>SentraCore</span>
         </a>
         <nav class="nav-desktop" aria-label="Primary">
-          <a href="index.html">Home</a>
-          <a href="pages/download.html">Download</a>
-          <a href="pages/about.html">About</a>
-          <a href="pages/docs.html">Docs</a>
+          <a href="index.html" data-nav="home">Home</a>
+          <a href="pages/download.html" data-nav="download">Download</a>
+          <a href="pages/about.html" data-nav="about">About</a>
+          <a href="pages/docs.html" data-nav="docs">Docs</a>
         </nav>
         <div class="nav-cta">
           <a class="btn btn-primary" href="#" data-auto-download="windows" data-download-track="header"