Consolidate and modernize SCSS into global styles

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.

src/app/pages/algorithms/algorithms.component.scss

@@ -1,21 +0,0 @@
-.container {
-  padding: 2rem;
-}
-
-.category-cards {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 1rem;
-  margin-top: 2rem;
-
-  mat-card {
-    cursor: pointer;
-    min-width: 450px;
-    max-width: 450px;
-
-    &:hover {
-      transform: translateY(-5px);
-      box-shadow: 0 4px 20px rgba(0,0,0,0.15);
-    }
-  }
-}

src/app/pages/algorithms/sorting/sorting.component.scss

@@ -1,53 +0,0 @@
-  .sorting-card {
-    width: 100%;
-    max-width: 1200px;
-    padding: 20px;
-
-    .controls-panel {
-      display: flex;
-      gap: 10px;
-      margin-bottom: 20px;
-      align-items: center;
-      flex-wrap: wrap;
-
-      mat-form-field {
-        width: 200px;
-      }
-    }
-
-    .visualization-area {
-      display: flex;
-      align-items: flex-end;
-      height: 300px; /* Max height for bars */
-      border-bottom: 1px solid #ccc;
-      margin-bottom: 20px;
-      gap: 1px;
-      background-color: #f0f0f0;
-
-      .bar {
-        flex-grow: 1;
-        background-color: #424242; /* Default unsorted color */
-        transition: height 0.05s ease-in-out, background-color 0.05s ease-in-out;
-        width: 10px; /* Default width, flex-grow will adjust */
-        min-width: 1px; /* Ensure bars are always visible */
-
-        &.unsorted {
-          background-color: #424242;
-        }
-
-        &.comparing {
-          background-color: #ffeb3b; /* Yellow for comparing */
-        }
-
-        &.sorted {
-          background-color: #4caf50; /* Green for sorted */
-        }
-      }
-    }
-
-    .info-panel {
-      margin-top: 10px;
-      font-size: 0.9em;
-      color: #FFFFFF;
-    }
-  }