:root{color-scheme:light dark;--gap: 12px}*{box-sizing:border-box}body{margin:0;font:15px/1.5 system-ui,sans-serif}.layout{display:grid;grid-template-columns:220px 220px 1fr;height:100vh}.sidebar,.sessions{padding:var(--gap);border-right:1px solid #8883;overflow-y:auto}.chat{display:flex;flex-direction:column;min-width:0}.chat__stream{flex:1;overflow-y:auto;padding:var(--gap);display:flex;flex-direction:column;gap:var(--gap)}.block{padding:8px 10px;border-radius:8px;white-space:pre-wrap;word-break:break-word}.block--user{background:#3b82f622;align-self:flex-end;max-width:70%}.block--assistant{background:#8881}.block--tool,.block--tool-result{background:#8881;font-family:ui-monospace,monospace;font-size:13px}.block--tool-result.is-error{background:#ef444422}.block--result{font-size:13px;opacity:.7}.chat__reconnecting,.chat__disconnected,.chat__error{margin:0;padding:8px var(--gap);font-size:13px;border-top:1px solid #8883}.chat__reconnecting{background:#8881}.chat__disconnected{background:#f59e0b22}.chat__error{background:#ef444422}.chat__empty{padding:var(--gap);opacity:.7}.sidebar__alert{margin:8px 0;padding:6px 8px;border-radius:6px;background:#f59e0b22;font-size:13px}.sessions__error{margin:8px 0 0;font-size:13px;color:#ef4444}.composer{display:flex;gap:8px;padding:var(--gap);border-top:1px solid #8883}.composer textarea{flex:1;resize:vertical;font:inherit;padding:8px}.sessions button.is-active{font-weight:600}@media(max-width:760px){.layout{grid-template-columns:1fr;grid-template-rows:auto auto 1fr}}