New look: slate-indigo panels, pink accent, Poppins, and a gradient card for your song

Inspired by a dashboard design the user shared.
- App: new palette and fonts, borderless rounded panels with soft shadows, a pink-to-blue
  gradient card for your own song (text and controls switch to white on it), flat cards for
  friends, a 'Hi Chris, welcome back' header, an outline bell, and a pink pill on the active tab.
- Website: the same look, plus a wide-screen layout with a sidebar, the page in a rounded panel,
  and a right column with your profile, recent activity and recent plays. Phones keep the top
  bar and bottom tabs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_011Y2iUsKEWDuRGjK5FPmcUP

apps/mobile/src/app/(tabs)/_layout.tsx

@@ -5,10 +5,11 @@ export default function TabsLayout() {
   return (
     <NativeTabs
       backgroundColor={colors.bg}
-      indicatorColor={colors.surface2}
+      // The active tab gets a pink pill, like the reference's sidebar.
+      indicatorColor={colors.accentSoft}
       // Android defaults icons and labels to black, which vanishes on the dark bar.
-      iconColor={{ default: colors.muted, selected: colors.text }}
-      labelStyle={{ default: { color: colors.muted }, selected: { color: colors.text } }}
+      iconColor={{ default: colors.muted, selected: colors.accent }}
+      labelStyle={{ default: { color: colors.muted }, selected: { color: colors.accent } }}
       labelVisibilityMode="labeled"
       tintColor={colors.accent}>
       <NativeTabs.Trigger name="index">