• Save/load student lists
• Generate random groups with two strategies
• Responsive, modern UI
• Accessible and keyboard-friendly
• Modern, accessible color scheme
• Tooltips for all interactive elements (visible on hover/focus, including grouping strategy explanations)

• Primary Dark: #213448 (rgb(33, 52, 72))
• Primary: #547792 (rgb(84, 119, 146))
• Accent: #94B4C1 (rgb(148, 180, 193))
• Background: #ECEFCA (rgb(236, 239, 202))

• All form controls have associated labels
• ARIA attributes for improved screen reader support
• Live region for group display updates
• Keyboard navigation and visible focus states
• Tooltips accessible via keyboard and screen readers, and visible on hover/focus
• Color contrast meets WCAG AA standards

• Layout adapts to all screen sizes
• Larger touch targets and font scaling for mobile
• Tooltips and controls are mobile-friendly

See CHANGELOG.md for a full list of changes.