/* Global dark theme */
:root {
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin:0; padding:0; background:#0c0c0c; color:#e5e5e5; font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Arial, sans-serif; }
a { color:#7aa2f7; }
input, textarea, button { font: inherit; }

/* Mobile-first layout tweaks */
@media (max-width: 600px) {
  .message { max-width: 90% !important; }
  .composer textarea { min-height: 48px !important; }
}