:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --text: #1a2230;
  --muted: #5d6879;
  --border: #d9dee6;
  --accent: #1f5fd6;
  --accent-ink: #ffffff;
  --ok-bg: #dff3e6; --ok-ink: #14663a;
  --warn-bg: #fbecc8; --warn-ink: #7a4d00;
  --info-bg: #dde8fb; --info-ink: #1a4aa6;
  --bad-bg: #fadcdc; --bad-ink: #a11f1f;
  --alt-bg: #eadffa; --alt-ink: #5b2aa3;
  --shadow: 0 1px 2px rgba(20, 30, 50, .06);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12161d; --surface: #1a2029; --surface-2: #232b37; --text: #e6eaf0; --muted: #98a3b5; --border: #2f3948;
    --accent: #6b9cff; --accent-ink: #0d1626;
    --ok-bg: #173b27; --ok-ink: #7fd8a4;
    --warn-bg: #43330f; --warn-ink: #f0c66a;
    --info-bg: #1b2f57; --info-ink: #9dbdff;
    --bad-bg: #4a1d1d; --bad-ink: #ff9d9d;
    --alt-bg: #33224f; --alt-ink: #c7a7ff;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
h1 { font-size: 22px; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 0 0 4px; display: flex; align-items: center; gap: 8px; }
.sub, .hint, small { color: var(--muted); }
.sub { margin: 2px 0 0; font-size: 14px; }
.hint { font-size: 13px; margin: 4px 0 10px; }
small { display: block; font-size: 12px; font-weight: 400; margin-top: 2px; }

.top { background: var(--surface); border-bottom: 1px solid var(--border); }
.top-in { display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; padding-top: 16px; padding-bottom: 16px; }
.top-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.privacy { font-size: 12px; color: var(--ok-ink); background: var(--ok-bg); padding: 3px 10px; border-radius: 999px; }

.modes { display: flex; gap: 2px; margin-top: -1px; overflow-x: auto; scrollbar-width: thin; }
.mode {
  font: inherit; font-size: 14px; padding: 9px 16px; cursor: pointer; background: none; color: var(--muted);
  border: 0; border-bottom: 3px solid transparent; white-space: nowrap;
}
.mode:hover { color: var(--text); }
.mode[aria-pressed="true"] { color: var(--text); font-weight: 600; border-bottom-color: var(--accent); }
.mode:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

main { padding-top: 20px; padding-bottom: 20px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; align-items: start; }
@media (max-width: 860px) { .grid2 { grid-template-columns: 1fr; } }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 16px; box-shadow: var(--shadow); }
.step { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 5px; box-sizing: border-box; border-radius: 50%; background: var(--accent); color: var(--accent-ink); font-size: 12px; font-weight: 600; }

.btn {
  font: inherit; font-size: 14px; padding: 7px 14px; border-radius: 7px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:focus-visible, select:focus-visible, input:focus-visible, .tab:focus-visible, th.sortable:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 600; }
.btn.primary:hover:not(:disabled) { filter: brightness(1.08); background: var(--accent); }
.btn.ghost { border-color: transparent; color: var(--muted); }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.drop {
  display: block; padding: 18px; text-align: center; border: 2px dashed var(--border); border-radius: 8px;
  color: var(--muted); cursor: pointer; background: var(--surface-2);
}
.drop:hover, .drop.over, .drop:focus-within { border-color: var(--accent); color: var(--text); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.drop strong { color: var(--accent); }

.files { list-style: none; margin: 10px 0 0; padding: 0; display: grid; gap: 8px; }
.files li { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; display: flex; gap: 10px; align-items: flex-start; justify-content: space-between; }
.files .fname { font-weight: 600; word-break: break-all; }
.files .fmeta { font-size: 12px; color: var(--muted); }
.files .fwarn { font-size: 12px; color: var(--warn-ink); background: var(--warn-bg); border-radius: 4px; padding: 2px 6px; margin-top: 4px; }
.linkbtn { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; font-size: 13px; padding: 2px 4px; }

.books-cards { display: grid; gap: 16px; }
.books-info { margin-top: 12px; }
.file-line { font-weight: 600; margin-bottom: 8px; word-break: break-all; }
.row-controls { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 10px; font-size: 13px; color: var(--muted); }
.row-controls input, .row-controls select, .settings input[type=number], .settings input[type=date], .map select {
  font: inherit; font-size: 14px; padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text);
}
.row-controls input[type=number] { width: 70px; }
.map { width: 100%; border-collapse: collapse; font-size: 13px; }
.map th { text-align: left; color: var(--muted); font-weight: 500; padding: 2px 6px 6px; }
.map td { padding: 3px 6px; }
.map td:first-child { white-space: nowrap; }
.map select { width: 100%; max-width: 260px; }
.map .req { color: var(--bad-ink); }
.map select.missing { border-color: var(--bad-ink); }

.settings { margin-bottom: 16px; }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; margin-top: 8px; }
.settings label { font-size: 13px; font-weight: 600; }
.settings label input[type=number], .settings label input[type=date] { display: block; margin-top: 4px; width: 100%; }
.settings .check[hidden] { display: none; }
.settings .check { display: flex; gap: 8px; align-items: flex-start; padding-top: 22px; }
.settings .check input { margin-top: 4px; }
.run-row { display: flex; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.run-row .hint { margin: 0; }

.msg { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 14px; }
.msg.error { background: var(--bad-bg); color: var(--bad-ink); }
.msg.info { background: var(--info-bg); color: var(--info-ink); }
.msg.warn { background: var(--warn-bg); color: var(--warn-ink); }

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.tile { background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; box-shadow: var(--shadow); }
.tile .label { font-size: 12px; color: var(--muted); }
.tile .big { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.tile .subv { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.tile.risk { border-color: var(--bad-ink); }
.tile.risk .big { color: var(--bad-ink); }
.tile.gain .big { color: var(--info-ink); }

.results-card { padding: 0; overflow: hidden; }
.tabs { display: flex; flex-wrap: wrap; gap: 2px; padding: 8px 8px 0; border-bottom: 1px solid var(--border); background: var(--surface-2); }
.tab { font: inherit; font-size: 13px; border: 1px solid transparent; border-bottom: 0; background: none; color: var(--muted); padding: 7px 12px; border-radius: 7px 7px 0 0; cursor: pointer; }
.tab .n { font-variant-numeric: tabular-nums; opacity: .8; margin-left: 4px; }
.tab[aria-selected="true"] { background: var(--surface); color: var(--text); border-color: var(--border); font-weight: 600; margin-bottom: -1px; }
.toolbar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; padding: 10px 12px; }
.toolbar input[type=search] { flex: 1 1 260px; max-width: 420px; font: inherit; font-size: 14px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--text); }
.toolbar .count { color: var(--muted); font-size: 13px; margin-left: auto; }

.table-wrap { overflow: auto; max-height: 68vh; border-top: 1px solid var(--border); }
table.data { border-collapse: separate; border-spacing: 0; width: 100%; font-size: 13px; }
table.data th { position: sticky; top: 0; background: var(--surface-2); text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); white-space: nowrap; font-weight: 600; z-index: 1; }
table.data th.sortable { cursor: pointer; user-select: none; }
table.data th.sortable[aria-sort="ascending"]::after { content: " \25B2"; font-size: 10px; }
table.data th.sortable[aria-sort="descending"]::after { content: " \25BC"; font-size: 10px; }
table.data td { padding: 7px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.data tr:hover td { background: var(--surface-2); }
table.data .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data .mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; white-space: nowrap; }
table.data .sub2 { display: block; color: var(--muted); font-size: 11px; }
table.data .diff-bad { color: var(--bad-ink); font-weight: 600; }
table.data .notes { min-width: 220px; color: var(--muted); }
table.data .notes div + div { margin-top: 2px; }
.empty { padding: 30px; text-align: center; color: var(--muted); }
.more { padding: 12px; text-align: center; border-top: 1px solid var(--border); }

.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 8px; border-radius: 999px; white-space: nowrap; }
.b-matched { background: var(--ok-bg); color: var(--ok-ink); }
.b-mismatch { background: var(--warn-bg); color: var(--warn-ink); }
.b-probable { background: var(--info-bg); color: var(--info-ink); }
.b-onlyportal { background: var(--alt-bg); color: var(--alt-ink); }
.b-onlybooks { background: var(--bad-bg); color: var(--bad-ink); }

.foot { color: var(--muted); font-size: 12px; padding-bottom: 32px; }