[data-theme="dark"] {
  --bg: #1a1a2e; --surface: #16213e; --border: #0f3460; --text: #e0e0e0;
  --accent: #e94560; --dim: #7a7a9a;
  --badge-niche-bg: #1a3a2a; --badge-niche-fg: #4ecca3;
  --badge-tagged-bg: #2a1a3a; --badge-tagged-fg: #c39bd3;
  --info-bg: rgba(0,0,0,.2);
}
[data-theme="light"] {
  --bg: #f5f5f5; --surface: #fff; --border: #d0d0d0; --text: #1a1a1a;
  --accent: #c0392b; --dim: #777;
  --badge-niche-bg: #d5f5e3; --badge-niche-fg: #1e8449;
  --badge-tagged-bg: #ebdef0; --badge-tagged-fg: #7d3c98;
  --info-bg: rgba(0,0,0,.04);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'JetBrains Mono','Fira Code','Cascadia Code',monospace;
  background: var(--bg); color: var(--text);
  transition: background .2s, color .2s;
}
header { display: flex; flex-wrap: wrap; align-items: baseline; }
h1 { font-size: 1.4rem; color: var(--accent); }
h1 a { color: inherit; text-decoration: none; }
h1 span { color: var(--dim); font-weight: normal; font-size: .85rem; display: inline-block; }
.header-controls { display: flex; gap: .8rem; align-items: center; margin-left: auto; }
.header-nav { display: flex; gap: .8rem; }
.header-nav a { color: var(--dim); text-decoration: none; font-size: .8rem; }
.header-nav a:hover { color: var(--accent); }
.theme-toggle {
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
  padding: .35rem .7rem; font-family: inherit; font-size: .8rem; color: var(--text); cursor: pointer;
}
.footer {
  margin-top: 2rem; padding: .6rem 0; text-align: center;
  color: var(--dim); font-size: .75rem; border-top: 1px solid var(--border);
}
.footer a { color: inherit; text-decoration: none; }
.footer a:hover { color: var(--accent); }
.footer a.footer-author:hover { color: #8E85D6; }