:root {
  color-scheme: light;
  font-family: "Segoe UI", sans-serif;
  background: #f4f1ea;
  color: #1c1915;
}
body { margin: 0; }
.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: #1c1915;
  color: #f4f1ea;
}
.top button, button {
  background: #1c1915;
  color: #f4f1ea;
  border: 0;
  padding: 8px 14px;
  cursor: pointer;
}
.top button { background: #f4f1ea; color: #1c1915; }
main { padding: 20px; }
.layout { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; }
.panel { background: white; padding: 16px 18px; border: 1px solid #ddd6c8; }
.narrow { max-width: 360px; }
label { display: block; margin: 12px 0 4px; }
input, textarea { width: 100%; box-sizing: border-box; padding: 8px; }
.thread { list-style: none; padding: 0; max-height: 420px; overflow: auto; }
.thread li { margin: 8px 0; padding: 8px; background: #f7f4ee; }
.thread .supervisor { background: #e7f0e4; }
.thread span { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
.error { color: #8c1d1d; }
.hitl { color: #6a4b00; }
.hint { color: #5c564c; }
@media (max-width: 800px) {
  .layout { grid-template-columns: 1fr; }
}