:root {
  --bg: #ffffff;
  --fg: #1d1d1f;
  --muted: #6e6e73;
  --line: #e5e5ea;
  --chrome: #f5f5f7;
  --card: #ffffff;
  --accent: #b7791f;
  --accent-soft: rgba(255, 196, 0, 0.18);
  --star: #e2a300;
  --green: #2f7d4f;
  --blue: #2b5fa8;
  --red: #b4322c;
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Inter, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1e20; --fg: #e6e6e6; --muted: #9a9aa0; --line: #333336; --chrome: #252527; --card: #2a2a2d;
    --accent: #f0b429; --accent-soft: rgba(240, 180, 41, 0.15); --star: #f0b429;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--fg); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
button, select, input, textarea { font: inherit; color: inherit; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 0.86em; }

/* ---- frame ---- */
.top {
  display: flex; align-items: center; gap: 28px; height: 52px; padding: 0 24px;
  background: var(--chrome); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 5;
}
.brand { font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.top nav { display: flex; gap: 4px; flex: 1; }
.top nav a { padding: 6px 12px; border-radius: 8px; color: var(--muted); white-space: nowrap; }
.top nav a:hover { color: var(--fg); background: var(--accent-soft); }
.top nav a.on { color: var(--fg); font-weight: 600; }
.who { display: flex; gap: 8px; align-items: baseline; }
.find input { width: 200px; padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); outline: none; font-size: 14px; }
.find input:focus { border-color: var(--accent); }
.where { list-style: none; margin: 4px 0 6px; padding: 0; color: var(--muted); }
.where li { padding: 1px 0; }
.where a { color: var(--fg); text-decoration: underline; }
.hit .inline { margin-top: 4px; }
main { max-width: 900px; margin: 0 auto; padding: 24px 24px 60px; }
main.wide { max-width: 1140px; }
.foot { max-width: 900px; margin: 0 auto; padding: 16px 24px 40px; color: var(--muted); font-size: 13px; display: flex; gap: 16px; border-top: 1px solid var(--line); }
.foot a { text-decoration: underline; }

/* ---- headings ---- */
.head { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin: 8px 0 20px; }
.head h1 { margin: 0 0 4px; font-size: 28px; letter-spacing: -0.02em; }
.head p { margin: 0; }
.crumbs { font-size: 13px; color: var(--muted); margin: 0 0 6px; }
.crumbs a:hover { color: var(--accent); }
h2.sec { font-size: 17px; margin: 28px 0 12px; display: flex; gap: 10px; align-items: baseline; }
h2.year { font-size: 14px; color: var(--muted); font-weight: 600; letter-spacing: 0.06em; margin: 28px 0 6px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }

/* ---- toolbar ---- */
.toolbar { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: center; margin: 0 0 16px; }
.toolbar input[type="search"] {
  flex: 1 1 220px; min-width: 180px; padding: 7px 12px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); outline: none;
}
.toolbar input[type="search"]:focus { border-color: var(--accent); }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  border: 1px solid var(--line); background: var(--card); border-radius: 999px; padding: 4px 11px; cursor: pointer; font-size: 13.5px; line-height: 1.3;
}
.chip b { font-weight: 500; color: var(--muted); margin-left: 2px; }
.chip:hover { background: var(--accent-soft); }
.chip.on { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.chip.on b { color: inherit; opacity: 0.7; }
.selects { display: flex; gap: 8px; margin-left: auto; }
select { padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); }
.btn {
  border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 7px 14px; cursor: pointer; white-space: nowrap;
}
.btn:hover { background: var(--accent-soft); }
.btn.primary { background: var(--fg); color: var(--bg); border-color: var(--fg); }
.btn.primary:hover { opacity: 0.85; }
.btn.small { padding: 4px 10px; font-size: 13px; }
.btn.danger { color: var(--red); }
.btn.sub.on { color: var(--green); border-color: var(--green); }
form.inline { display: inline; }
.empty { color: var(--muted); padding: 30px 0; text-align: center; }

/* ---- covers ---- */
.cover { width: 56px; height: 84px; object-fit: cover; border-radius: 4px; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25); background: var(--chrome); display: block; }
.cover.big { width: 180px; height: 270px; border-radius: 6px; box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25); }
.cover.card { width: 100%; height: auto; aspect-ratio: 2 / 3; }
.cover.mini { width: 40px; height: 60px; border-radius: 3px; }
.cover.ph.mini { font-size: 7px; padding: 3px; }
.strip { display: flex; gap: 6px; margin: 0 0 12px; }
.cover.ph { display: flex; align-items: center; justify-content: center; padding: 6px; text-align: center; color: #fff; font-size: 9px; line-height: 1.2; overflow: hidden; background: hsl(var(--h, 30) 35% 45%); }
.cover.ph.big { font-size: 16px; padding: 16px; }
.cover.ph.card { font-size: 12px; }
.cover-link { flex: none; }

/* ---- library rows ---- */
.rows { display: flex; flex-direction: column; }
.row { display: flex; gap: 16px; padding: 12px 0; border-bottom: 1px solid var(--line); }
.row:last-child { border-bottom: none; }
.row-body { min-width: 0; flex: 1; }
.row h3 { margin: 0; font-size: 16px; font-weight: 600; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.badge { font-size: 12px; font-weight: 500; color: var(--muted); }
.by { margin: 1px 0 4px; color: var(--muted); font-size: 14px; }
.by .alt { margin-left: 8px; opacity: 0.8; }
.by .alt::before { content: "· "; }
.meta { margin: 2px 0 4px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; font-size: 13px; }
.stars { letter-spacing: 1px; font-size: 13px; }
.stars .on { color: var(--star); }
.stars .on i { font-style: normal; background: linear-gradient(90deg, var(--star) 50%, var(--line) 50%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stars .off { color: var(--line); }
.rating-num { color: var(--muted); margin-left: -2px; }
.tag { font-size: 12px; padding: 1px 8px; border-radius: 999px; background: var(--chrome); color: var(--muted); }
.tag.status-reading { background: rgba(43, 95, 168, 0.12); color: var(--blue); }
.tag.status-want { background: var(--accent-soft); color: var(--accent); }
.tag.copy-paper { background: rgba(47, 125, 79, 0.12); color: var(--green); }
.tag.copy-seeking { background: rgba(180, 50, 44, 0.1); color: var(--red); }
.tag.new { background: var(--accent-soft); color: var(--accent); }
.note { margin: 2px 0 0; font-size: 14px; color: var(--fg); opacity: 0.9; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.note a { text-decoration: underline; text-decoration-color: var(--line); }

/* ---- book page ---- */
.book { display: flex; gap: 32px; align-items: flex-start; }
.book-main { flex: 1; min-width: 0; }
.book h1 { margin: 0 0 2px; font-size: 28px; letter-spacing: -0.02em; line-height: 1.2; }
.alt-title { margin: 0 0 2px; color: var(--muted); font-size: 16px; }
.book .by { font-size: 16px; margin-bottom: 10px; }
.prose { font-size: 16px; line-height: 1.6; margin: 14px 0; }
.prose p { margin: 0 0 12px; }
.prose a { text-decoration: underline; text-decoration-color: var(--line); }
.mine { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 10px 0 4px; font-size: 14px; }
.mine a { text-decoration: underline; text-decoration-color: var(--line); }
.readers { margin-top: 28px; }
.reader { padding: 12px 0; border-top: 1px solid var(--line); }
.reader > p { margin: 0; display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.reader .prose { margin: 8px 0 0; font-size: 15px; }
.row .edit { align-self: flex-start; flex: none; }
.row:target { background: var(--accent-soft); }
.blurb { color: var(--muted); }
.price { font-weight: 600; margin: 6px 0; }
.buy { display: flex; gap: 12px; align-items: center; margin: 14px 0 10px; flex-wrap: wrap; }
.buy .btn { font-weight: 600; }
.editions { margin: 14px 0 10px; }
.editions > p { margin: 0 0 2px; }
.editions .buy { margin: 6px 0; }
.series { margin: 14px 0 10px; }
.series > p { margin: 0 0 4px; }
.series ul { list-style: none; margin: 0; padding: 0; }
.series li { display: flex; gap: 10px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); flex-wrap: wrap; }
.series li.this > a:first-child { font-weight: 600; }
.series li .btn { margin-left: auto; }
.links { font-size: 14px; }
.links a { text-decoration: underline; text-decoration-color: var(--line); }
.links .sep { margin: 0 8px; color: var(--muted); }
.form { margin: 24px 0 0; padding: 18px 20px; background: var(--chrome); border-radius: 12px; display: flex; flex-direction: column; gap: 12px; }
.form h2 { margin: 0 0 4px; font-size: 16px; }
.form label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); flex: 1; }
.form input, .form select, .form textarea { padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--card); color: var(--fg); font-size: 15px; }
.form textarea { resize: vertical; line-height: 1.5; }
.form .two, .form .three { display: flex; gap: 12px; }
.form .actions { display: flex; gap: 10px; align-items: center; margin-top: 4px; }
.form .grow { flex: 1; }
dialog { border: none; border-radius: 14px; padding: 0; width: min(520px, 92vw); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3); background: var(--card); color: var(--fg); }
dialog::backdrop { background: rgba(0, 0, 0, 0.35); }
dialog .form { margin: 0; background: var(--card); }

/* ---- discovery ---- */
.shelves { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 14px; }
.shelf-card { display: block; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
.shelf-card:hover { border-color: var(--accent); color: inherit; }
.shelf-kind { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.shelf-card h3 { margin: 4px 0 4px; font-size: 18px; }
.shelf-card p { margin: 0 0 6px; font-size: 14px; }
.shelf-n { color: var(--muted); font-size: 13px; }
.shelf-card .btn { margin-top: 8px; }

/* ---- shelf grid ---- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 22px 18px; }
.card h3 { margin: 8px 0 0; font-size: 14px; font-weight: 600; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card .by { font-size: 13px; margin: 2px 0 2px; }
.card .meta { font-size: 12.5px; margin: 0 0 6px; }
.have { color: var(--green); margin: 0; }

/* ---- recommendations ---- */
.recs { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.rec { padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); }
.rec h3 { margin: 0; font-size: 16px; }
.rec p { margin: 4px 0 8px; font-size: 14px; }
.toolbar form.chips { width: 100%; align-items: center; }
.toolbar form.chips input[type="search"] { flex: 1 1 200px; }

@media (max-width: 640px) {
  .top { padding: 0 16px; gap: 14px; }
  .top nav a { padding: 6px 8px; }
  .find input { width: 120px; }
  .who span { display: none; }
  .top { gap: 10px; }
  .head { flex-direction: column; gap: 10px; }
  main { padding: 16px 16px 40px; }
  .book { flex-direction: column; gap: 18px; }
  .cover.big { width: 140px; height: 210px; }
  .form .two, .form .three { flex-direction: column; }
  .selects { margin-left: 0; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 16px 12px; }
}
.head .muted a { text-decoration: underline; text-decoration-color: var(--line); }