:root {
  --fg: #1a1a1a;
  --bg: #fafaf7;
  --muted: #6a6a6a;
  --border: #d8d6cf;
  --accent: #2a4d3a;
  --user-bg: #eef2ec;
  --atlas-bg: #fff;
  --error: #8a1f1f;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 1.5rem;
  max-width: 880px;
  margin-inline: auto;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.5;
}

header h1 { margin: 0 0 .25rem; font-size: 1.5rem; }
.sub, .muted { color: var(--muted); font-size: .85rem; }

main { display: grid; gap: 2rem; margin-top: 1.5rem; }

h2 {
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin: 0 0 .75rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: .25rem;
}

#keepers-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .35rem;
}
#keepers-list li {
  padding: .4rem .6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #fff;
  display: grid;
  grid-template-columns: 7rem 9rem 1fr;
  gap: .75rem;
  align-items: baseline;
  font-size: .92rem;
}
#keepers-list .name { font-weight: 600; }
#keepers-list .room { color: var(--muted); font-size: .85rem; }
#keepers-list li[data-online="true"] .name::after {
  content: " ●";
  color: var(--accent);
}

#conversation {
  display: grid;
  gap: .5rem;
  margin-bottom: .75rem;
  max-height: 50vh;
  overflow-y: auto;
}
.msg {
  padding: .55rem .75rem;
  border-radius: 6px;
  border: 1px solid var(--border);
  white-space: pre-wrap;
  font-size: .95rem;
}
.msg.user { background: var(--user-bg); }
.msg.atlas { background: var(--atlas-bg); }
.msg .who {
  font-size: .7rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--muted);
  margin-bottom: .2rem;
}
.msg.error { border-color: var(--error); color: var(--error); background: #fff5f5; }

#chat-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: .5rem;
}
#chat-input {
  padding: .55rem .75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
  font-size: .95rem;
  resize: vertical;
}
#chat-send {
  padding: 0 1.1rem;
  background: var(--accent);
  color: #fff;
  border: 0;
  border-radius: 4px;
  font-weight: 600;
  cursor: pointer;
}
#chat-send:disabled { opacity: .5; cursor: not-allowed; }
#chat-status { margin-top: .35rem; min-height: 1em; }
#chat-status.error { color: var(--error); }

#activity-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: .25rem;
  font-family: ui-monospace, SFMono-Regular, "Cascadia Mono", Menlo, monospace;
  font-size: .82rem;
  max-height: 18rem;
  overflow-y: auto;
}
#activity-list li {
  padding: .25rem .5rem;
  border-left: 2px solid var(--border);
}
#activity-list .ts { color: var(--muted); margin-right: .5rem; }
#activity-list .who { font-weight: 600; margin-right: .35rem; }

footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid var(--border); }