/* Styles for the plain HTML pages that scripts/seo.mjs writes (song pages, lessons, features). */
:root {
  --bg: #0f1115;
  --panel: #1a1d24;
  --panel-2: #232733;
  --text: #e9ecf2;
  --muted: #9aa3b2;
  --accent: #3d8bfd;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
a { color: #8fc1ff; }
.top {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--panel);
}
.top .brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 700; text-decoration: none; }
.top nav { display: flex; gap: 14px; flex-wrap: wrap; margin-left: auto; }
.top nav a { color: var(--muted); text-decoration: none; }
.top nav a:hover { color: var(--text); }
main { max-width: 860px; margin: 0 auto; padding: 16px 16px 40px; }
h1 { font-size: 30px; line-height: 1.2; margin: 8px 0 12px; }
h1 .sub { display: block; font-size: 18px; color: var(--muted); font-weight: 500; margin-top: 4px; }
h2 { font-size: 21px; margin: 32px 0 10px; }
.lead { font-size: 18px; color: #c9cfda; }
.muted { color: var(--muted); }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.button {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { filter: brightness(1.1); }
.song-head { display: flex; gap: 20px; align-items: center; flex-wrap: wrap; margin: 8px 0 16px; }
.song-head .cover { width: 240px; max-width: 100%; border-radius: 12px; }
.song-head > div { flex: 1; min-width: 220px; }
.song-head .lead { margin: 0 0 14px; }
.facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; margin: 16px 0; }
.facts div { background: var(--panel); border-radius: 10px; padding: 8px 12px; }
.facts dt { font-size: 13px; color: var(--muted); }
.facts dd { margin: 0; font-weight: 600; }
.note { background: var(--panel); border-left: 3px solid var(--accent); padding: 10px 14px; border-radius: 6px; }
ol li, ul li { margin: 4px 0; }
.cards { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
.cards li { margin: 0; }
.card {
  display: flex;
  flex-direction: column;
  gap: 2px;
  height: 100%;
  padding: 8px;
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
}
.card:hover { background: var(--panel-2); }
.card .cover { width: 100%; border-radius: 8px; margin-bottom: 6px; }
.card span { font-size: 13px; color: var(--muted); }
.lessons li { margin: 10px 0; }
.lessons .go { font-size: 14px; margin-left: 6px; }
.faq { background: var(--panel); border-radius: 10px; padding: 10px 14px; margin: 8px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: #c9cfda; }
.foot { border-top: 1px solid var(--panel-2); color: var(--muted); font-size: 14px; padding: 16px; text-align: center; }
.foot p { max-width: 860px; margin: 6px auto; }
.foot a { color: var(--muted); }