Minor markup and formatting cleanup plus layout adjustments.
- topbar.component.html: removed mat-toolbar color attribute, compacted/normalized element attributes and spacing, fixed small markup spacing issues.
- projects.component.ts: code formatting and whitespace normalization (imports, property spacing, object literals, small function signature/timeout formatting); no logic changes.
- styles.scss: reorganized topbar rules (added app-topbar wrapper, display and color), switched .hero from grid to flex with responsive flex-basis, adjusted photo and intro flex behavior, increased project grid column min width and centered grid with max-width, removed featured card full-width grid span.
These changes improve consistency, readability and adjust layout/responsiveness of the topbar/hero/project grid.
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.
