:root {
  color-scheme: dark;
  --bg: #1e1f24;
  --bg-panel: #26272e;
  --bg-hover: #2e3039;
  --border: #34363f;
  --text: #c8cdd8;
  --text-muted: #7d8391;
  --accent: #7aa2f7;
  --online: #9ece6a;
  --offline: #f7768e;
  --warn: #e0af68;
  --git-modified: #f59e0b;
  --on-accent: #1a1b1f;
  --mono: "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  /* Shared UI foundations; palette tokens above change with the theme. */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;
  --space-8: 32px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --font-caption: 12px;
  --font-control: 13px;
  --font-section: 14px;
  --font-dialog: 18px;
  --control-height: 32px;
  --dialog-small: 380px;
  --dialog-standard: 480px;
  --dialog-wide: 720px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 9px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-hover);
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}
.btn:hover:not(:disabled) {
  border-color: var(--accent);
}
.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.btn.send {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
}
@media (prefers-color-scheme: light) { :root {
  color-scheme: light;
  --bg: #f4f5f7;
  --bg-panel: #ffffff;
  --bg-hover: #e9ebef;
  --border: #d5d9e0;
  --text: #2b2f38;
  --text-muted: #6b7280;
  --accent: #3565d8;
  --online: #2f9e44;
  --offline: #d64550;
  --warn: #e0af68;
  --git-modified: #f59e0b;
  --on-accent: #1a1b1f;
} }