Dark UI Login Form

Description

This HTML file represents a dark-themed multi-page Login form. It features three sections: login, sign-up, and password recovery. The form uses a frosted glass-like effect with a dark, semi-transparent background and includes subtle transitions and animations to enhance the user experience. Each input field changes its appearance on focus, and there are smooth transitions between different form pages. Additionally, validation feedback is provided through visual cues like shaking inputs for errors. This form is also responsive, adjusting well on smaller screens. The overall design is modern and interactive, making it visually appealing and user-friendly.