feat: redesign frontend with Dragon Encode broadcast aesthetic

frontend/src/index.css

@@ -1,9 +1,63 @@
-@tailwind base;
+@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Barlow+Condensed:wght@300;400;500;600;700;900&family=Barlow:wght@300;400;500&display=swap');
-@tailwind components;
+
-@tailwind utilities;
+:root {
+  --bg-deepest: #080a0e;
+  --bg-dark: #0d1117;
+  --bg-panel: #111620;
+  --bg-card: #141b28;
+  --bg-card-hover: #1a2235;
+  --border: #1e2d45;
+  --border-bright: #2a4060;
+  --dragon-blue: #1a3aff;
+  --dragon-blue-dim: #0f2299;
+  --accent-amber: #ff9a1a;
+  --rec-red: #ff2020;
+  --rec-red-glow: rgba(255, 32, 32, 0.4);
+  --green-safe: #00e676;
+  --text-primary: #e8eef8;
+  --text-secondary: #7a8fa8;
+  --text-muted: #3d5270;
+  --text-mono: #a8c4e0;
+  --font-ui: 'Barlow Condensed', sans-serif;
+  --font-body: 'Barlow', sans-serif;
+  --font-mono: 'Share Tech Mono', monospace;
+}
+
+*, *::before, *::after {
+  box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+}
+
+html { font-size: 16px; }
 
 body {
-  margin: 0;
+  background: var(--bg-deepest);
-  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
+  color: var(--text-primary);
-  background-color: #111827;
+  font-family: var(--font-body);
+  min-height: 100vh;
+  overflow-x: hidden;
+  position: relative;
 }
+
+/* Scanline overlay */
+body::before {
+  content: '';
+  position: fixed;
+  inset: 0;
+  background: repeating-linear-gradient(
+    to bottom,
+    transparent 0px,
+    transparent 2px,
+    rgba(0, 0, 0, 0.025) 2px,
+    rgba(0, 0, 0, 0.025) 4px
+  );
+  pointer-events: none;
+  z-index: 9999;
+}
+
+/* Scrollbar */
+::-webkit-scrollbar { width: 6px; height: 6px; }
+::-webkit-scrollbar-track { background: var(--bg-dark); }
+::-webkit-scrollbar-thumb { background: var(--border-bright); border-radius: 3px; }
+::-webkit-scrollbar-thumb:hover { background: #3a5a80; }