RahilKothari9 · Copilot · Apr 26, 2026 · Apr 26, 2026
diff --git a/README.md b/README.md
@@ -19,6 +19,14 @@ This is the living history of Chimera's evolution. Each entry represents a day o
 
 ---
 
+### Day 64: 2026-04-26
+
+**Feature/Change**: Frontend Polish — Progress Shimmer Unification, Tag Micro-interactions & Section Container Elevation
+**Description**: Three focused visual improvements that raise the consistency and premium feel of the entire UI. **(1) Progress bar shimmer unification**: The `.category-bar` shimmer sweep was previously the only animated progress bar; `.milestone-progress-fill` and `.tutorial-progress-bar` now receive the same treatment — a sliding `rgba` highlight running on a 2.5s loop — and both are updated from hard-coded hex colours to the design-token variables (`--color-accent → --color-accent-secondary → --color-accent-light`), keeping them in sync with the brand palette across both themes. Suppressed for `prefers-reduced-motion`. **(2) Tag hover micro-interaction**: The `.tag` chip elements throughout the roadmap and tool sections previously had no hover state. They now respond with a smooth `150ms ease-out` transition: accent-tinted background, accent border, a 1px upward lift, and a subtle `box-shadow` glow — making them feel interactive without being distracting. **(3) Section container elevation**: Six tool-section containers (`.achievement-section`, `.comparison-container`, `.dependency-legend`, `.dependency-graph-container`, `.dependency-insights`, `.impact-chart-container`) were using flat page-background colours with a simple 1px border. They are now elevated to the glass-card standard used by stat cards: `border-radius: 20px`, `backdrop-filter: blur(8px)`, `box-shadow: var(--shadow-md)`, a 1.5px accent-tinted border on hover, and a gentle `translateY(-2px)` lift. Light theme gets a crisp `rgba(255,255,255,0.72)` background for contrast. Mobile touch devices suppress the hover lift via a `max-width: 768px` override. All 2,653 tests continue to pass and the TypeScript/Vite build succeeds.
+**Files Modified**: src/style.css, README.md, public/README.md
+
+---
+
 ### Day 63: 2026-04-19
 
 **Feature/Change**: Frontend Polish - Hero Surface, Heading Rhythm & Timeline Card Refinement

diff --git a/public/README.md b/public/README.md
@@ -19,6 +19,14 @@ This is the living history of Chimera's evolution. Each entry represents a day o
 
 ---
 
+### Day 64: 2026-04-26
+
+**Feature/Change**: Frontend Polish — Progress Shimmer Unification, Tag Micro-interactions & Section Container Elevation
+**Description**: Three focused visual improvements that raise the consistency and premium feel of the entire UI. **(1) Progress bar shimmer unification**: The `.category-bar` shimmer sweep was previously the only animated progress bar; `.milestone-progress-fill` and `.tutorial-progress-bar` now receive the same treatment — a sliding `rgba` highlight running on a 2.5s loop — and both are updated from hard-coded hex colours to the design-token variables (`--color-accent → --color-accent-secondary → --color-accent-light`), keeping them in sync with the brand palette across both themes. Suppressed for `prefers-reduced-motion`. **(2) Tag hover micro-interaction**: The `.tag` chip elements throughout the roadmap and tool sections previously had no hover state. They now respond with a smooth `150ms ease-out` transition: accent-tinted background, accent border, a 1px upward lift, and a subtle `box-shadow` glow — making them feel interactive without being distracting. **(3) Section container elevation**: Six tool-section containers (`.achievement-section`, `.comparison-container`, `.dependency-legend`, `.dependency-graph-container`, `.dependency-insights`, `.impact-chart-container`) were using flat page-background colours with a simple 1px border. They are now elevated to the glass-card standard used by stat cards: `border-radius: 20px`, `backdrop-filter: blur(8px)`, `box-shadow: var(--shadow-md)`, a 1.5px accent-tinted border on hover, and a gentle `translateY(-2px)` lift. Light theme gets a crisp `rgba(255,255,255,0.72)` background for contrast. Mobile touch devices suppress the hover lift via a `max-width: 768px` override. All 2,653 tests continue to pass and the TypeScript/Vite build succeeds.
+**Files Modified**: src/style.css, README.md, public/README.md
+
+---
+
 ### Day 63: 2026-04-19
 
 **Feature/Change**: Frontend Polish - Hero Surface, Heading Rhythm & Timeline Card Refinement

diff --git a/src/style.css b/src/style.css
@@ -14445,3 +14445,151 @@ textarea:focus::placeholder {
     transform: translateY(-2px);
   }
 }
+
+/* ================================
+   Day 64: Frontend Polish — Progress Shimmer Unification,
+            Tag Micro-interactions & Section Container Elevation
+   ================================ */
+
+/* ── 1. Progress bar shimmer unification ──
+   The .category-bar already has a shimmer sweep; extend the same treatment
+   to milestone, tutorial, and comparison progress fills for visual cohesion.
+   Old hard-coded hex colours are replaced with design-token variables. */
+
+.milestone-progress-fill {
+  background: linear-gradient(
+    90deg,
+    var(--color-accent) 0%,
+    var(--color-accent-secondary) 50%,
+    var(--color-accent-light) 100%
+  );
+  position: relative;
+  overflow: hidden;
+}
+
+.milestone-progress-fill::after {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: linear-gradient(
+    90deg,
+    transparent 0%,
+    rgba(255, 255, 255, 0.28) 50%,
+    transparent 100%
+  );
+  animation: shimmer 2.5s ease-in-out infinite;
+}
+
+.tutorial-progress-bar {
+  background: linear-gradient(
+    90deg,
+    var(--color-accent) 0%,
+    var(--color-accent-secondary) 100%
+  );
+  position: relative;
+  overflow: hidden;
+}
+
+.tutorial-progress-bar::after {
+  content: '';
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: linear-gradient(
+    90deg,
+    transparent 0%,
+    rgba(255, 255, 255, 0.22) 50%,
+    transparent 100%
+  );
+  animation: shimmer 2.5s ease-in-out infinite;
+}
+
+@media (prefers-reduced-motion: reduce) {
+  .milestone-progress-fill::after,
+  .tutorial-progress-bar::after {
+    animation: none;
+  }
+}
+
+/* ── 2. Tag hover micro-interaction ──
+   Tags are informational but feel more alive with a gentle hover lift,
+   accent tint, and smooth transition. Both themes benefit from the
+   same treatment since it uses CSS variables. */
+
+.tag {
+  transition:
+    color var(--transition-fast) var(--ease-out),
+    background var(--transition-fast) var(--ease-out),
+    border-color var(--transition-fast) var(--ease-out),
+    transform var(--transition-fast) var(--ease-out),
+    box-shadow var(--transition-fast) var(--ease-out);
+}
+
+.tag:hover {
+  color: var(--color-accent);
+  background: color-mix(in srgb, var(--color-accent) 10%, transparent);
+  border-color: color-mix(in srgb, var(--color-accent) 35%, transparent);
+  transform: translateY(-1px);
+  box-shadow: 0 2px 6px color-mix(in srgb, var(--color-accent) 15%, transparent);
+}
+
+/* ── 3. Section container elevation ──
+   Several tool-section containers use flat page-background colours and a
+   simple 1px border. Elevating them to the glass-card treatment makes the
+   layout feel layered and intentional, matching the stat-card standard. */
+
+.achievement-section,
+.comparison-container,
+.dependency-legend,
+.dependency-graph-container,
+.dependency-insights,
+.impact-chart-container {
+  border-radius: 20px;
+  backdrop-filter: blur(8px);
+  -webkit-backdrop-filter: blur(8px);
+  box-shadow: var(--shadow-md);
+  border: 1.5px solid var(--color-border);
+  transition:
+    box-shadow var(--transition-base) var(--ease-out),
+    border-color var(--transition-base) var(--ease-out),
+    transform var(--transition-base) var(--ease-out);
+}
+
+.achievement-section:hover,
+.comparison-container:hover,
+.dependency-legend:hover,
+.dependency-graph-container:hover,
+.dependency-insights:hover,
+.impact-chart-container:hover {
+  box-shadow: var(--shadow-lg);
+  border-color: color-mix(in srgb, var(--color-accent) 30%, var(--color-border));
+  transform: translateY(-2px);
+}
+
+/* Light theme refinement for elevated containers */
+[data-theme="light"] .achievement-section,
+[data-theme="light"] .comparison-container,
+[data-theme="light"] .dependency-legend,
+[data-theme="light"] .dependency-graph-container,
+[data-theme="light"] .dependency-insights,
+[data-theme="light"] .impact-chart-container {
+  background: rgba(255, 255, 255, 0.72);
+  border-color: color-mix(in srgb, var(--color-accent) 18%, rgba(0,0,0,0.08));
+}
+
+/* Mobile: suppress hover lift to avoid sticky transforms on touch */
+@media (max-width: 768px) {
+  .achievement-section:hover,
+  .comparison-container:hover,
+  .dependency-legend:hover,
+  .dependency-graph-container:hover,
+  .dependency-insights:hover,
+  .impact-chart-container:hover {
+    transform: none;
+  }
+}