:root {
  color-scheme: dark;
  --bg: #0a0a0a;
  --fg: #e8e8e8;
  --muted: #888;
  --accent: #5fa8ff;
  --john: #5fff8a;
  --openclaw: #ffb95f;
  --hermes: #b95fff;
  --system: #888;
  --warn: #ff5f5f;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  height: 100vh; height: 100dvh;
  overflow: hidden;
}
body { display: flex; flex-direction: column; }
.topbar {
  display: flex; align-items: center; gap: 1em;
  padding: 0.6em 1em;
  border-bottom: 1px solid #222;
  background: #111;
}
.topbar h1 { margin: 0; font-size: 1.1em; font-weight: 600; }
.topbar .status { font-size: 0.85em; color: var(--muted); flex: 1; }
.topbar button {
  background: var(--accent); color: #000; border: none;
  padding: 0.4em 0.8em; border-radius: 6px; font-weight: 600;
  cursor: pointer;
}
#messages {
  flex: 1; overflow-y: auto; padding: 1em;
  display: flex; flex-direction: column; gap: 0.5em;
}
.msg {
  border-left: 3px solid var(--system);
  padding: 0.5em 0.8em;
  background: #131313;
  border-radius: 0 6px 6px 0;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.msg.john     { border-color: var(--john); }
.msg.openclaw { border-color: var(--openclaw); }
.msg.hermes   { border-color: var(--hermes); }
.msg.system   { border-color: var(--system); opacity: 0.7; font-size: 0.85em; }
.msg.a2a      { background: #0e0e1a; opacity: 0.85; font-size: 0.85em; }
.msg-meta {
  font-size: 0.75em; color: var(--muted);
  margin-bottom: 0.3em;
  display: flex; gap: 0.6em;
}
.msg-meta .sender { font-weight: 600; }
.msg-meta .sender.john     { color: var(--john); }
.msg-meta .sender.openclaw { color: var(--openclaw); }
.msg-meta .sender.hermes   { color: var(--hermes); }
.msg-meta .sender.system   { color: var(--system); }
.msg-content { white-space: pre-wrap; }
.msg-content code, .msg-content pre {
  background: #000; padding: 2px 4px; border-radius: 3px;
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
}
#composer {
  display: flex; gap: 0.4em; padding: 0.6em; border-top: 1px solid #222;
  background: #111;
}
#composer input {
  flex: 1; background: #1a1a1a; color: var(--fg);
  border: 1px solid #333; border-radius: 6px;
  padding: 0.7em; font-size: 1em;
}
#composer button {
  background: var(--accent); color: #000; border: none;
  padding: 0 1em; border-radius: 6px; font-weight: 600;
  cursor: pointer;
}
.warn { color: var(--warn); }