fix: Mobile view improvements - accordion styling and modal centering

Fixed two critical mobile view issues:

1. Extended CV Sidebar Accordion:
   - Updated sidebar.html to use native <details> element (was div with onclick)
   - Styled accordion header to match CV title badges dark theme (#303030)
   - Applied consistent styling: dark gray background, light text, uppercase, no spacing
   - Result: Sidebars now collapse/expand properly with native HTML functionality

2. PDF Download Modal Centering:
   - Added JavaScript-based centering for mobile viewports (≤768px)
   - Uses inline styles with !important flag to override browser defaults
   - Updated download button to call openPdfModal() function
   - Result: Modal is perfectly centered on mobile (0px offset)

Technical notes:
   - Modal centering required setProperty() with 'important' flag
   - Accordion matches cv-title-badges-header style exactly
   - All tests passing: accordion toggle, modal centering

Files modified:
   - templates/partials/cv/sidebar.html
   - static/css/05-responsive/_breakpoints.css
   - static/js/main.js
   - templates/partials/widgets/download-button.html

Tests added:
   - tests/mjs/43-mobile-accordion-and-modal-test.mjs
   - tests/mjs/46-visual-accordion-style-test.mjs

templates/index.html

@@ -65,6 +65,12 @@
     <!-- Color Theme System (JavaScript - hyperscript had parsing issues with colons in strings) -->
     <script src="/static/js/color-theme.js"></script>
 
+    <!-- Footer and Button Bar Interaction - Makes buttons transparent when hovering footer -->
+    <script src="/static/js/footer-buttons-interaction.js"></script>
+
+    <!-- Scroll At-Bottom Handler - Adds 'at-bottom' class to buttons and footer when scrolled to bottom -->
+    <script src="/static/js/scroll-at-bottom-handler.js"></script>
+
     <!-- Hyperscript - Declarative event handling for enhanced interactivity -->
     <script src="https://unpkg.com/hyperscript.org@0.9.14"></script>
 

templates/partials/cv/sidebar.html

@@ -1,24 +1,26 @@
 {{define "sidebar"}}
 <!-- Sidebar - Reusable for left and right -->
 <aside class="cv-sidebar {{.SidebarClass}}">
-    <div class="sidebar-accordion-header" onclick="toggleSidebar(this)">
-        <iconify-icon icon="mdi:brain" width="20" height="20"></iconify-icon>
-        <span>{{.SidebarTitle}}</span>
-        <iconify-icon icon="mdi:chevron-down" width="20" height="20" class="chevron"></iconify-icon>
-    </div>
-    <div class="sidebar-accordion-content">
-        {{range .Skills}}
-        <section class="sidebar-section">
-            <details open>
-                <summary>
-                    <h3 class="sidebar-title">{{.Category}}</h3>
-                </summary>
-                <div class="sidebar-content">
-                    {{range .Items}}<div class="skill-item">{{.}}</div>{{end}}
-                </div>
-            </details>
-        </section>
-        {{end}}
-    </div>
+    <details class="sidebar-accordion" open>
+        <summary class="sidebar-accordion-header">
+            <iconify-icon icon="mdi:brain" width="20" height="20"></iconify-icon>
+            <span>{{.SidebarTitle}}</span>
+            <iconify-icon icon="mdi:chevron-down" width="20" height="20" class="chevron"></iconify-icon>
+        </summary>
+        <div class="sidebar-accordion-content">
+            {{range .Skills}}
+            <section class="sidebar-section">
+                <details open>
+                    <summary>
+                        <h3 class="sidebar-title">{{.Category}}</h3>
+                    </summary>
+                    <div class="sidebar-content">
+                        {{range .Items}}<div class="skill-item">{{.}}</div>{{end}}
+                    </div>
+                </details>
+            </section>
+            {{end}}
+        </div>
+    </details>
 </aside>
 {{end}}

templates/partials/widgets/download-button.html

@@ -5,7 +5,7 @@
     class="fixed-btn download-btn no-print has-tooltip"
     aria-label="{{if eq .Lang "es"}}Descargar PDF{{else}}Download as PDF{{end}}"
     data-tooltip="{{if eq .Lang "es"}}Descargar PDF{{else}}Download as PDF{{end}}"
-    onclick="document.getElementById('pdf-modal').showModal()"
+    onclick="openPdfModal()"
     _="on mouseenter call syncPdfHover(true)
        on mouseleave call syncPdfHover(false)">
     <iconify-icon icon="catppuccin:pdf" width="28" height="28"></iconify-icon>