feat: enhance UI and functionality across components

- Added Google Fonts preconnect and stylesheet link in `index.html` for improved typography.
- Updated version in `package.json` to `4.9.9alpha3`.
- Refined launch configuration by removing deprecated arguments.
- Improved app detail modal and card components for better accessibility and visual consistency.
- Enhanced download queue and sidebar components with updated styles and functionality.
- Implemented new utility classes for better styling control in CSS.
- Adjusted various components for improved responsiveness and user experience.

src/assets/css/appstyle.css

@@ -1,22 +1,25 @@
 @import "tailwindcss";
 
 @theme {
-  --font-sans: "Inter", "system-ui", "-apple-system", "Segoe UI", "sans-serif";
+  --font-sans: "Plus Jakarta Sans", "Inter", "system-ui", "-apple-system", "Segoe UI", "sans-serif";
 
   --color-brand: #2563eb;
   --color-brand-dark: #1d4ed8;
   --color-brand-soft: #60a5fa;
 
-  --color-surface-light: #f5f7fb;
-  --color-surface-dark: #0b1220;
+  --color-surface-light: #f1f5f9;
+  --color-surface-dark: #0f172a;
 
   --color-card-light: #ffffff;
-  --color-card-dark: #151c2c;
+  --color-card-dark: #1e293b;
 
-  --shadow-glass: 0 10px 30px rgba(15,23,42,0.08);
-  --shadow-glassDark: 0 20px 45px rgba(0,0,0,0.45);
+  --shadow-glass: 0 4px 24px rgba(15, 23, 42, 0.06);
+  --shadow-glassDark: 0 24px 48px rgba(0, 0, 0, 0.4);
+  --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.05);
+  --shadow-card-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
 
   --radius-xl: 1rem;
+  --radius-2xl: 1.25rem;
 }
 
 @variant dark (&:where(.dark, .dark *));
@@ -27,11 +30,12 @@
     background-color: var(--color-surface-light);
     color: #0f172a;
     min-height: 100vh;
+    -webkit-font-smoothing: antialiased;
   }
 
   :root.dark body {
     background-color: var(--color-surface-dark);
-    color: #f8fafc;
+    color: #f1f5f9;
   }
 
   #app {
@@ -40,6 +44,13 @@
 }
 
 @layer utilities {
+  .line-clamp-2 {
+    overflow: hidden;
+    display: -webkit-box;
+    -webkit-line-clamp: 2;
+    -webkit-box-orient: vertical;
+  }
+
   .scrollbar-muted {
     scrollbar-width: thin;
     scrollbar-color: #94a3b8 transparent;