:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e8edf4;
  --muted: #8b9cb3;
  --accent: #3d8bfd;
  --ok: #3dd68c;
  --err: #ff6b6b;
  --in: #2a3a52;
  --out: #1e3a2f;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 1rem; }
.topbar {
  background: var(--card);
  border-bottom: 1px solid #2a3548;
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; }
nav a { color: var(--accent); margin-left: 1rem; text-decoration: none; }
.card {
  background: var(--card);
  border-radius: 10px;
  padding: 1.25rem;
  margin: 1rem 0;
}
.narrow { max-width: 420px; margin: 3rem auto; }
.grid2 { display: grid; grid-template-columns: 1fr 1.4fr; gap: 1rem; }
@media (max-width: 800px) { .grid2 { grid-template-columns: 1fr; } }
label { display: block; margin: .75rem 0; }
input, textarea, button {
  width: 100%;
  margin-top: .35rem;
  padding: .6rem .75rem;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #0b1220;
  color: var(--text);
}
button {
  width: auto;
  background: var(--accent);
  border: none;
  cursor: pointer;
  font-weight: 600;
}
.muted { color: var(--muted); font-size: .9rem; }
.err { color: var(--err); }
.ok { color: var(--ok); }
.list { list-style: none; padding: 0; }
.list li { padding: .4rem 0; border-bottom: 1px solid #2a3548; }
.logbox {
  max-height: 70vh;
  overflow: auto;
  font-family: ui-monospace, monospace;
  font-size: .82rem;
}
.logline { padding: .25rem 0; border-bottom: 1px solid #243044; }
.logline .ts { color: var(--muted); margin-right: .5rem; }
.log-error .lvl { color: var(--err); }
.log-warning .lvl { color: #f0c040; }
.log-info .lvl { color: var(--accent); }
.thread { margin: 1rem 0; }
.msg {
  border-radius: 8px;
  padding: .75rem;
  margin-bottom: .75rem;
}
.msg-inbound, .msg-inbound { background: var(--in); }
.msg-outbound { background: var(--out); }
.msg header { font-size: .85rem; color: var(--muted); margin-bottom: .5rem; }
.msg pre {
  white-space: pre-wrap;
  margin: 0;
  font-family: inherit;
}
.file-label textarea { font-family: ui-monospace, monospace; font-size: .9rem; }