:root {
  --bg: #fff;
  --fg: #0f1419;
  --muted: #536471;
  --line: #eff3f4;
  --card: #f7f9f9;
  --accent: #1d9bf0;
  --danger: #f4212e;
  --good: #00ba7c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000;
    --fg: #e7e9ea;
    --muted: #71767b;
    --line: #2f3336;
    --card: #16181c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.4 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 2;
}
header h1 { margin: 0; font-size: 20px; }
main { max-width: 760px; margin: 0 auto; padding: 16px; }
.muted { color: var(--muted); }
.fine { color: var(--muted); font-size: 13px; }
[hidden] { display: none !important; }

.hero { text-align: center; padding: 64px 0; }
.hero p { color: var(--muted); max-width: 480px; margin: 12px auto 24px; }

.btn {
  display: inline-block;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  border-radius: 999px;
  padding: 6px 16px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
.btn:disabled { opacity: 0.4; cursor: default; }
.btn.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn.danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn.big { padding: 12px 28px; font-size: 17px; }

#account { display: flex; align-items: center; gap: 10px; }
#account img { width: 32px; height: 32px; border-radius: 50%; }

.tabs { display: flex; border-bottom: 1px solid var(--line); margin-bottom: 12px; }
.tabs button {
  flex: 1;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  padding: 12px;
  cursor: pointer;
}
.tabs button.active { color: var(--fg); border-color: var(--accent); }
.badge {
  background: var(--accent);
  color: #fff;
  border-radius: 999px;
  padding: 0 7px;
  font-size: 12px;
  margin-left: 4px;
}

.toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 8px 0; }
.spacer { flex: 1; }
.filters { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; }
.chip {
  border: 1px solid var(--line);
  background: transparent;
  color: var(--fg);
  border-radius: 999px;
  padding: 4px 12px;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}
.chip.on { background: var(--accent); border-color: var(--accent); color: #fff; }
#search {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--fg);
  font: inherit;
  min-width: 0;
  width: 200px;
  max-width: 100%;
}

.progress {
  position: relative;
  height: 24px;
  background: var(--card);
  border-radius: 6px;
  overflow: hidden;
  margin: 8px 0;
}
.progress div { height: 100%; width: 0; background: var(--danger); transition: width 0.2s; }
.progress span { position: absolute; inset: 0; display: grid; place-items: center; font-size: 13px; font-weight: 600; }

ul { list-style: none; margin: 0; padding: 0; }
.tweets li {
  display: flex;
  gap: 12px;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
}
.tweets li.gone { opacity: 0.35; text-decoration: line-through; }
.tweets .body { flex: 1; min-width: 0; }
.tweets .text { white-space: pre-wrap; overflow-wrap: anywhere; }
.tweets .meta { color: var(--muted); font-size: 13px; margin-top: 4px; display: flex; gap: 8px; flex-wrap: wrap; }
.tweets .meta a { color: inherit; }
.tweets .thumb { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.tag { background: var(--card); border-radius: 4px; padding: 0 6px; }

.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
@media (max-width: 600px) { .columns { grid-template-columns: 1fr; } }
.columns h3 { margin: 8px 0; }
.people li { display: flex; align-items: center; gap: 10px; padding: 8px 0; border-bottom: 1px solid var(--line); }
.people img { width: 36px; height: 36px; border-radius: 50%; }
.people a { color: var(--fg); text-decoration: none; }
.people .handle { color: var(--muted); font-size: 13px; }
#followed li { border-left: 3px solid var(--good); padding-left: 8px; }
#unfollowed li { border-left: 3px solid var(--danger); padding-left: 8px; }