Redesigned Login with Modal and Styled Inputs

Introduces a new login modal interface with improved input styling, error feedback, and enhanced button variants, plus updated navigation and theme integration.

What's New

• Login screen is now presented as a bottom modal with slide animation.

• Inputs in the login form have labels, error states, and a show/hide password toggle.

• Password and email input fields highlight errors visually for better user feedback.

• New button styles added: primary, secondary, and marketing variants for consistent appearance.

• Navigation updated to use the new login modal with transparent modal presentation.

• Custom fonts and improved theme support added for better overall UI consistency.

Improvements

• Login form layout refined to remove extra padding and use shared styled components.

• Bottom modal now uses a scroll view so all content and buttons are accessible on smaller screens.

• Text labels and inputs use theme-based sizing and colors for improved readability and visual hierarchy.