.conv {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 22px;
  margin: 0 0 18px;
  box-shadow: var(--shadow-sm);
}
.conv h3 {
  margin: 0 0 16px;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 9px;
}
.conv h3::before {
  content: "";
  width: 6px;
  height: 18px;
  border-radius: 3px;
  background: var(--accent);
}

/* Key-value grid for sensor readings */
.kvs {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.reading {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-input);
  padding: 12px 14px;
  font-size: 14px;
}
.reading .reading-label {
  color: var(--muted, var(--text-2));
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .02em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.reading .reading-value {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--text);
  font-weight: 500;
}

/* Permission prompt */
.perm-prompt {
  background: var(--warn-soft);
  border: 1px solid var(--warn-soft-2);
  border-radius: var(--r-input);
  padding: 16px 18px;
  margin: 0 0 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}
.perm-prompt p {
  margin: 0;
  color: var(--warn);
  font-size: 14px;
  flex: 1 1 200px;
}