body { padding: 0; }
header.nav { position: sticky; top: 0; z-index: 10; padding: .6rem 1rem; border-bottom: 1px solid var(--muted-border-color); display: flex; justify-content: space-between; align-items: center; }
header.nav a.brand { text-decoration: none; font-weight: 600; }
main.container { display: grid; grid-template-columns: 220px 1fr; gap: 0; min-height: calc(100vh - 3rem); }
aside.sidebar { border-right: 1px solid var(--muted-border-color); padding: .75rem; overflow-y: auto; }
aside.sidebar a { display:block; padding:.25rem .5rem; border-radius:.25rem; text-decoration:none; }
aside.sidebar a.active { background: var(--muted-color); color: var(--contrast); }
section.chat { padding: .75rem 1rem; display:flex; flex-direction: column; height: calc(100vh - 3.5rem); }
#tail { flex: 1; overflow: auto; white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; height: calc(100vh - 4.5rem); }
.ts { opacity: .66; }
.msg { margin-bottom: .25rem; }
footer { text-align: center; font-size: .85rem; padding: .5rem 0; opacity: .7; }
@media (max-width: 900px) { main.container { grid-template-columns: 1fr; } aside.sidebar { display:none; } }