#app { max-width: 1200px; margin: 0 auto; padding: 1rem; }
#header { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; border-bottom: 1px solid var(--surface); margin-bottom: 2rem; }
#nav { display: flex; gap: 1rem; }
#status-bar { display: flex; gap: 0.5rem; font-size: 0.8rem; }
.status { padding: 0.2rem 0.5rem; border-radius: var(--radius); }
.status.online { background: var(--success); color: #000; }
.status.offline { background: var(--danger); color: #fff; }