Add active state support to topbar links (routerLinkActive) and CSS underline/hover styling; expose icons for algorithm categories and render them in the algorithms list. Update AlgorithmCategory interface and AlgorithmsService to include icon names, import MatIconModule where needed, and adjust algorithms template to show icon, title and description layout. Global style tweaks: dark theme background, canvas shadows, card hover/gradient accents, and new styles for algorithm cards and page title for improved visual polish.
Move component-level styles into src/styles.scss and remove duplicated rules from several component SCSS files (app, topbar, about, algorithms, sorting, imprint, project dialog, projects, babylon-canvas). The global stylesheet now centralizes layout and typography (clamp-based sizing), sorting visualization & canvas rules, topbar/menu overrides, project/swiper styles, and shared utilities. This reduces duplication, improves responsiveness, and simplifies stylesheet management.
