.dark-theme { background: #121212; color: #e0e0e0; font-family: sans-serif; }
.metrics-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.metric-card { background: #1e1e1e; padding: 20px; border-radius: 8px; }
.broadcast-control { margin-top: 30px; }