Hide dropdown trigger when no visible actions exist

Updated the actioncrumb component to conditionally render dropdown triggers
only when there are visible actions available. This prevents empty dropdown
buttons from appearing on both mobile and desktop views.

Fix icon-text spacing using flexbox gap instead of margin

- Add gap-2.5 to mobile modal action item button for proper spacing
- Remove me-2.5 from icons (no longer needed with gap)
- Remove ps-1 from text span (handled by parent gap)
- Gap property works consistently in both LTR and RTL layouts

Reduce text and icon sizes in mobile actions modal for breadcrumb con…

Add current item styling and back navigation to mobile modals

- Update getMobileModalItemClasses to accept isCurrent parameter
- Apply background and border styling to current items matching desktop theme
- Add back button in actions modal to navigate to breadcrumb list
- Display current step label in actions modal header
- Add currentStepLabel to Alpine.js data for step context tracking

Simplify dropdown animation and make items more compact

- Remove dropdown menu transition for instant appearance
- Reduce dropdown menu padding from py-2 to py-1
- Reduce dropdown item padding from py-2.5 to py-2
- Reduce gap between icon and text from gap-3 to gap-2.5
- Change item transitions from transition-all to transition-colors for simpler color-only animations

Enhance modal and dropdown with modern minimal UI design

- Add glassmorphism backdrop with blur effect and improved opacity
- Implement theme-specific border radius (lg/2xl/md for Simple/Rounded/Square)
- Add modern shadow system with layered depth (shadow-xl, ring borders)
- Improve spacing with generous padding for better touch targets
- Enhance hover/active states with primary color accents
- Add smooth transitions throughout (duration-150/200)
- Optimize dark mode with better opacity values
- Maintain consistency across all three theme styles