- Updated VoiceConversation.vue to set a fixed font size for the header.
- Changed index.vue to use an aside element for the header and adjusted layout to a grid system.
- Enhanced lock.vue by restructuring the layout and improving visual elements for better user experience.
- Revamped login.vue to introduce a visual section and reorganized form elements for clarity.
- Redesigned register.vue to include a visual brand section and improved form layout for user registration.
- Replaced hardcoded colors and styles with CSS variables in multiple components including `index.vue`, `lock.vue`, `login.vue`, and `register.vue`.
- Improved layout and spacing in forms and containers for better responsiveness.
- Removed unused particle background animation from `lock.vue`.
- Added new SCSS file for Element Plus theme customization.
- Introduced a minimalist CSS file for global styles and variables.
