:root {
  --bg: #f7f5f0;
  --surface: #ffffff;
  --text: #22201c;
  --muted: #6f6a60;
  --border: #e2ddd2;
  --accent: #9a3b22;
  --accent-soft: #f3e3dc;
  --name: #f6ecc8;
  --reader-size: 19px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --cjk: "PingFang TC", "Noto Serif TC", "Songti TC", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}
:root[data-theme="sepia"] {
  --bg: #f1e7d0; --surface: #f8f0dc; --text: #3b2f20; --muted: #7a6a52;
  --border: #dccdac; --accent: #8a4b1c; --accent-soft: #ead9b6; --name: #e9d79c;
}
:root[data-theme="dark"] {
  --bg: #17181a; --surface: #202225; --text: #e4e1da; --muted: #9a958b;
  --border: #34363a; --accent: #e08a6a; --accent-soft: #3a2a24; --name: #4a3f1e;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-family: var(--sans); }
a { color: var(--accent); text-decoration: none; }
button, input, select { font: inherit; color: inherit; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 20px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: .02em; color: var(--text); }
.topbar nav { display: flex; gap: 4px; margin-left: auto; }
.topbar nav a { padding: 6px 12px; border-radius: 6px; color: var(--muted); }
.topbar nav a.active { background: var(--accent-soft); color: var(--accent); }

.page { max-width: 1100px; margin: 0 auto; padding: 24px 20px 80px; }

.btn {
  border: 1px solid var(--border); background: var(--surface); border-radius: 6px;
  padding: 6px 12px; cursor: pointer;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .4; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.small { padding: 3px 8px; font-size: 13px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 6px; overflow: hidden; }
.seg button { border: 0; background: var(--surface); padding: 6px 12px; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--accent-soft); color: var(--accent); }
input[type="text"], input[type="search"], select {
  border: 1px solid var(--border); background: var(--surface); border-radius: 6px; padding: 6px 10px;
}

/* Library */
.lib-head { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 16px; }
.lib-head h1 { margin: 0 auto 0 0; font-size: 24px; }
.stats { color: var(--muted); font-size: 14px; margin-bottom: 12px; }
.ranges { display: flex; flex-wrap: wrap; gap: 4px; margin-bottom: 16px; }
.ranges button { font-size: 13px; padding: 3px 8px; }
.continue { padding: 12px 16px; background: var(--accent-soft); border-radius: 8px; margin-bottom: 16px; }
.chapters { list-style: none; padding: 0; margin: 0; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; }
.chapters li a {
  display: grid; grid-template-columns: 64px 1fr auto; gap: 12px; align-items: baseline;
  padding: 9px 16px; color: var(--text); border-bottom: 1px solid var(--border);
}
.chapters li:last-child a { border-bottom: 0; }
.chapters li a:hover { background: var(--accent-soft); }
.num { color: var(--muted); font-variant-numeric: tabular-nums; }
.zh { font-family: var(--cjk); color: var(--muted); font-size: 14px; margin-left: 8px; }
.badge { font-size: 11px; padding: 2px 6px; border-radius: 4px; border: 1px solid var(--border); color: var(--muted); white-space: nowrap; }
.badge.en { border-color: var(--accent); color: var(--accent); }
.empty { padding: 24px; color: var(--muted); text-align: center; }

/* Reader */
.reader-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 24px; }
.reader-bar .spacer { flex: 1; }
.reader-bar input[type="number"] { width: 80px; border: 1px solid var(--border); background: var(--surface); border-radius: 6px; padding: 6px 8px; }
.text { max-width: 720px; margin: 0 auto; }
.text.parallel { max-width: none; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.col h1 { font-size: 1.5em; line-height: 1.3; margin: 0 0 1.2em; }
.col p { margin: 0 0 1.05em; line-height: 1.75; }
.col.en { font-family: var(--serif); font-size: var(--reader-size); }
.col.zh { font-family: var(--cjk); font-size: calc(var(--reader-size) * .95); }
.col.zh p { text-indent: 2em; line-height: 1.9; }
.col .end { text-align: center; color: var(--muted); font-style: italic; margin-top: 2em; }
.missing { padding: 24px; border: 1px dashed var(--border); border-radius: 8px; color: var(--muted); font-family: var(--sans); font-size: 15px; }
mark.name { background: var(--name); color: inherit; border-radius: 3px; padding: 0 1px; cursor: help; }
.pager { display: flex; justify-content: space-between; gap: 12px; max-width: 720px; margin: 48px auto 0; }
.text.parallel + .pager { max-width: none; }

/* Settings */
.settings h1 { font-size: 24px; margin: 0 0 4px; }
.settings h2 { font-size: 18px; margin: 32px 0 6px; }
.hint { color: var(--muted); font-size: 14px; margin: 0 0 14px; line-height: 1.5; }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 12px; }
.toolbar .spacer { flex: 1; }
.status { font-size: 13px; color: var(--muted); }
.status.dirty { color: var(--accent); }
table.names { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
table.names th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); padding: 8px 10px; border-bottom: 1px solid var(--border); }
table.names td { padding: 6px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.names tr:last-child td { border-bottom: 0; }
table.names input[type="text"] { width: 100%; }
table.names td.cjk input { font-family: var(--cjk); }
table.names tr.off td { opacity: .5; }
.prefs { display: grid; grid-template-columns: max-content 1fr; gap: 12px 20px; align-items: center; }
.suggest { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.suggest button { font-size: 13px; }
.suggest .count { color: var(--muted); margin-left: 4px; }

@media (max-width: 760px) {
  .text.parallel { grid-template-columns: 1fr; }
  .chapters li a { grid-template-columns: 48px 1fr; }
  .chapters li a .badge { display: none; }
  table.names .hide-sm { display: none; }
}

/* Login */
.login form { max-width: 320px; margin: 15vh auto 0; display: flex; flex-direction: column; gap: 12px; }
.login h1 { font-size: 24px; margin: 0 0 8px; text-align: center; }
.login input { border: 1px solid var(--border); background: var(--surface); border-radius: 6px; padding: 10px 12px; font-size: 16px; }
.login .btn { padding: 10px; }
.error { color: var(--accent); margin: 0; font-size: 14px; }