:root {
  --fg: #0f1419;
  --muted: #536471;
  --bg: #fff;
  --line: #eff3f4;
  --accent: #1d9bf0;
  --accent-fg: #fff;
  --soft: #f7f9f9;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
}
header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 24px;
  border-bottom: 1px solid var(--line);
}
header .brand a { font-weight: 700; text-decoration: none; color: var(--fg); }
header nav { display: flex; gap: 16px; flex: 1; }
header nav a { color: var(--fg); text-decoration: none; }
header nav a:hover { color: var(--accent); }
header .me { color: var(--muted); font-size: 13px; }
header .me a { color: var(--muted); }
main { max-width: 720px; margin: 24px auto; padding: 0 16px; }
h1 { margin-top: 0; font-size: 22px; }
.flash { padding: 10px 14px; background: var(--soft); border-left: 3px solid var(--accent); margin-bottom: 16px; border-radius: 4px; }
.row { display: flex; gap: 8px; align-items: flex-start; flex-wrap: wrap; }
.row > * { flex: 1; }
.row .btn { flex: 0 0 auto; }
.header-row { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.header-row .actions { display: flex; gap: 8px; }
.inline { display: inline; }
.muted { color: var(--muted); }
.btn {
  display: inline-block;
  padding: 8px 14px;
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 999px;
  color: var(--fg);
  text-decoration: none;
  font: inherit;
  cursor: pointer;
}
.btn:hover { background: var(--soft); }
.btn.primary { background: var(--accent); color: var(--accent-fg); border-color: var(--accent); }
.btn.primary:hover { background: #1a8cd8; }
.btn.link { background: none; border: none; color: var(--accent); padding: 0; cursor: pointer; }
input[type=text], input[name=username], textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font: inherit;
  background: var(--bg);
}
textarea { resize: vertical; }
ul.handles, ul.posts, ul.conversations, ul.dm-thread { list-style: none; padding: 0; margin: 0; }
ul.handles li { padding: 10px 0; border-bottom: 1px solid var(--line); display: flex; justify-content: space-between; }
.post, ul.conversations li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.post .meta, ul.conversations .muted { color: var(--muted); font-size: 13px; }
.post .text { margin: 6px 0; white-space: pre-wrap; }
.reply { margin-top: 8px; display: flex; flex-direction: column; gap: 6px; align-items: stretch; }
.reply textarea { width: 100%; }
.reply button { align-self: flex-end; }
.dm { padding: 8px 12px; margin: 6px 0; border-radius: 12px; max-width: 80%; }
.dm.me { background: var(--accent); color: var(--accent-fg); margin-left: auto; }
.dm.me .meta { color: rgba(255,255,255,0.8); }
.dm.them { background: var(--soft); }
.dm .meta { font-size: 12px; opacity: 0.8; }
.dm .text { white-space: pre-wrap; }
.login { text-align: center; padding: 40px 0; }
.login .btn { margin-top: 20px; font-size: 16px; }
code { font-size: 12px; color: var(--muted); }