:root {
  --bg: #101114;
  --panel: #181a1f;
  --ink: #f2f3f5;
  --muted: #8b9099;
  --signal: #e10600;
  --line: rgba(242, 243, 245, 0.1);
  --display: "Unbounded", system-ui, sans-serif;
  --body: "Onest", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: var(--body);
  background: var(--bg);
  color: var(--ink);
}
h1, h2, strong { font-family: var(--display); }
.login {
  min-height: 100%;
  display: grid;
  place-items: center;
  padding: 24px;
}
.login__card {
  width: min(420px, 100%);
  background: var(--panel);
  padding: 28px;
  border: 1px solid var(--line);
}
.login__mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  background: var(--signal);
  font-family: var(--display);
  margin: 0 0 16px;
}
.login__card h1 { margin: 0 0 8px; }
.login__card p { color: var(--muted); }
.login__card label { display: block; margin: 14px 0 6px; font-size: 13px; }
.login__card input, .composer textarea, .ghost, button {
  font: inherit;
}
.login__card input, .composer textarea {
  width: 100%;
  background: #101114;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 10px 12px;
}
button {
  margin-top: 16px;
  background: var(--signal);
  color: #fff;
  border: 0;
  min-height: 44px;
  padding: 0 16px;
  font-weight: 700;
  cursor: pointer;
}
.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 12px;
}
.login__err { color: #ff8a80; }
#app { display: grid; grid-template-columns: 320px 1fr; height: 100%; }
.side { border-right: 1px solid var(--line); overflow: auto; padding: 16px; }
.side__head { display: flex; justify-content: space-between; align-items: baseline; }
.list { list-style: none; margin: 12px 0 0; padding: 0; }
.list li {
  padding: 10px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}
.list li.is-on { background: #22242b; }
.list small { color: var(--muted); display: block; }
.main { display: grid; grid-template-rows: auto 1fr auto; min-width: 0; }
.main__head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}
.main__actions { display: flex; gap: 8px; flex-wrap: wrap; }
.muted { color: var(--muted); margin: 0; }
.thread { overflow: auto; padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.msg {
  max-width: 640px;
  padding: 10px 12px;
  background: #22242b;
  white-space: pre-wrap;
}
.msg.in { align-self: flex-start; }
.msg.out { align-self: flex-end; background: #2a1a1a; }
.composer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  padding: 12px 16px 20px;
  border-top: 1px solid var(--line);
}
.composer button { margin-top: 0; }
.takeon { outline: 2px solid var(--signal); }
@media (max-width: 840px) {
  #app { grid-template-columns: 1fr; }
  .side { max-height: 34vh; }
}