:root {
  --bg: #11131a;
  --panel: #1b1f2b;
  --line: #2e3446;
  --ink: #e6e9f0;
  --dim: #8d95a8;
  --accent: #7fd1ff;
  --bad: #ff8080;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 15px/1.5 ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}
header {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
}
h1 { font-size: 18px; letter-spacing: 4px; margin: 0; }
h2 { font-size: 15px; letter-spacing: 2px; margin: 24px 0 8px; color: var(--accent); }
h3 { font-size: 14px; margin: 16px 0 6px; }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav button { background: transparent; }
nav button.on { border-color: var(--accent); color: var(--accent); }
#who { margin-left: auto; color: var(--dim); }
main { max-width: 900px; margin: 0 auto; padding: 0 20px 60px; }
button, input, textarea, select {
  font: inherit;
  color: var(--ink);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 6px 10px;
}
button { cursor: pointer; }
button:hover { border-color: var(--accent); }
form { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 8px 0; }
form textarea { width: 100%; min-height: 60px; }
pre {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 10px;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-all;
}
.list { display: flex; flex-direction: column; gap: 6px; }
.row {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 8px 12px;
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}
.row .grow { flex: 1; min-width: 160px; }
.dim { color: var(--dim); font-size: 13px; }
.err { color: var(--bad); min-height: 1.5em; padding: 0 20px; }
a { color: var(--accent); }
#chat-layout { display: flex; gap: 12px; align-items: flex-start; flex-wrap: wrap; }
#friend-list { flex: 0 0 200px; }
#thread { flex: 1; min-width: 260px; }
#messages {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  height: 320px;
  overflow-y: auto;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.msg { max-width: 80%; padding: 4px 8px; border-radius: 6px; background: #262c3c; }
.msg.mine { align-self: flex-end; background: #2b4457; }
.badge {
  background: var(--accent);
  color: #11131a;
  border-radius: 8px;
  padding: 0 6px;
  font-size: 12px;
}