:root {
  --bg: #0b0d10;
  --surface: #14171c;
  --surface-2: #1b1f26;
  --text: #e7ebf0;
  --muted: #9aa4b2;
  --accent: #4f8cff;
  --accent-press: #3a6fd6;
  --ok: #3fb950;
  --warn: #d29922;
  --err: #f85149;
  --border: #262b33;
  --radius: 12px;
  font-synthesis: none;
}
@media (prefers-color-scheme: light) {
  :root { --bg:#f5f7fa; --surface:#fff; --surface-2:#eef1f5; --text:#12161c; --muted:#5b6572; --border:#dde2e9; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
.topbar { display: flex; align-items: center; gap: .75rem; padding: .75rem 1.25rem; border-bottom: 1px solid var(--border); background: var(--surface); position: sticky; top: 0; }
.brand { font-weight: 700; letter-spacing: .5px; }
.spacer { flex: 1; }
.badge { font-size: .75rem; padding: .2rem .6rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.badge.claimed { color: var(--ok); border-color: var(--ok); }
.badge.unclaimed { color: var(--warn); border-color: var(--warn); }
main { max-width: 960px; margin: 1.5rem auto; padding: 0 1rem; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; margin-bottom: 1.25rem; }
h1 { font-size: 1.4rem; margin: 0 0 .5rem; }
h2 { font-size: 1.05rem; margin: 0 0 .75rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.25rem; margin-bottom: 1.25rem; }
.grid .card { margin: 0; }
dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: .3rem .75rem; font-size: .9rem; }
dt { color: var(--muted); }
dd { margin: 0; text-align: right; word-break: break-word; }
.facts { list-style: none; padding: 0; margin: 1rem 0; display: grid; gap: .35rem; font-size: .95rem; }
button { font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid transparent; padding: .55rem 1rem; }
button.primary { background: var(--accent); color: #fff; }
button.primary:hover { background: var(--accent-press); }
button.secondary { background: var(--surface-2); color: var(--text); border-color: var(--border); }
button.ghost { background: transparent; color: var(--muted); border: 1px solid var(--border); padding: .3rem .7rem; font-size: .8rem; }
button:disabled { opacity: .5; cursor: progress; }
.hidden { display: none !important; }
.msg { min-height: 1.2em; margin: .75rem 0 0; font-size: .9rem; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }
.warn { color: var(--warn); font-size: .9rem; }
.conv-head { display: flex; align-items: center; justify-content: space-between; }
.conv-layout { display: grid; grid-template-columns: 200px 1fr; gap: 1rem; }
@media (max-width: 640px) { .conv-layout { grid-template-columns: 1fr; } }
.conv-list { display: flex; flex-direction: column; gap: .3rem; max-height: 380px; overflow-y: auto; }
.conv-item { text-align: left; background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: .45rem .6rem; font-size: .82rem; cursor: pointer; color: var(--text); }
.conv-item.active { border-color: var(--accent); }
.conv-item .meta { color: var(--muted); font-size: .72rem; }
.conv-log { display: flex; flex-direction: column; gap: .6rem; margin-bottom: .75rem; max-height: 340px; overflow-y: auto; }
.bubble { padding: .6rem .8rem; border-radius: 10px; max-width: 85%; font-size: .92rem; }
.bubble.me { align-self: flex-end; background: var(--accent); color: #fff; }
.bubble.atlas { align-self: flex-start; background: var(--surface-2); border: 1px solid var(--border); }
.bubble .tags { margin-top: .4rem; font-size: .72rem; color: var(--muted); display: flex; flex-wrap: wrap; gap: .3rem; }
.bubble .tag { border: 1px solid var(--border); border-radius: 999px; padding: .05rem .5rem; }
.bubble .tag.warn { color: var(--warn); border-color: var(--warn); }
.conv-form, .invite-form { display: flex; gap: .5rem; flex-wrap: wrap; }
input, select { font: inherit; background: var(--surface-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: .5rem .7rem; flex: 1; min-width: 140px; }
.provider-note { color: var(--muted); font-size: .8rem; margin: .6rem 0 0; }
.passkey-row { display: flex; justify-content: space-between; gap: .5rem; padding: .4rem 0; border-bottom: 1px solid var(--border); font-size: .88rem; }
.pill { font-size: .72rem; padding: .05rem .5rem; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.pill.synced { color: var(--accent); border-color: var(--accent); }
.pill.hardened { color: var(--ok); border-color: var(--ok); }
.foot { text-align: center; color: var(--muted); font-size: .78rem; padding: 1rem; }