Major redesign of authentication page:
Left Side (40% width):
- Full-height gradient background using primary theme color
- Large TERMIX logo with glow effect
- Subtitle and tagline
- Infinite animated ripple waves (3 layers)
- Hidden on mobile, shows brand identity
Right Side (60% width):
- Centered glassmorphism card with backdrop blur
- Refined tab switcher with pill-style active state
- Enlarged title with gradient text effect
- Added welcome subtitles for better UX
- Card slides in from bottom on load
- All existing functionality preserved
Visual enhancements:
- Tab navigation: segmented control style in muted container
- Active tab: white background with subtle shadow
- Smooth 200ms transitions on all interactions
- Card: rounded-2xl, shadow-xl, semi-transparent border
Creates premium, modern login experience matching transition animations
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