:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1c1f26;
  --muted: #5d6470;
  --border: #e2e5ea;
  --accent: #2455d6;
  --accent-soft: #e6ecfb;
  --good: #1a8a4a;
  --good-soft: #e3f4ea;
  --mid: #c27a05;
  --mid-soft: #fbefd6;
  --bad: #c9302c;
  --bad-soft: #fbe5e4;
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --surface: #171b21;
    --text: #e8eaee;
    --muted: #9aa3b0;
    --border: #2a3039;
    --accent: #7ea2ff;
    --accent-soft: #1d2740;
    --good: #4cc47d;
    --good-soft: #143421;
    --mid: #e9a93a;
    --mid-soft: #3a2c10;
    --bad: #f0706b;
    --bad-soft: #3d1c1b;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: var(--accent); }
main, header.site, footer.site { max-width: 920px; margin: 0 auto; padding: 0 20px; }
header.site { padding-top: 48px; padding-bottom: 8px; }
header.site h1 { margin: 0 0 6px; font-size: 2rem; letter-spacing: -0.01em; }
.tagline { margin: 0; color: var(--muted); max-width: 60ch; }
footer.site { padding: 32px 20px 48px; color: var(--muted); font-size: 0.9rem; }
.muted { color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.75rem; color: var(--muted); margin: 0 0 4px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 20px 0;
}
.card.error { border-color: var(--bad); background: var(--bad-soft); }
.card.error p { margin: 0 0 12px; }

/* Upload */
.drop {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 44px 20px;
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.drop:hover, .drop.over { border-color: var(--accent); background: var(--accent-soft); }
.drop input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }
.drop:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }
.drop-icon { font-size: 2rem; }
.drop-title { font-weight: 600; }
.drop-hint { color: var(--muted); font-size: 0.9rem; max-width: 52ch; }
.how { margin-top: 16px; color: var(--muted); font-size: 0.95rem; }
.how summary { cursor: pointer; color: var(--text); font-weight: 500; }
.how ol { padding-left: 20px; }
.how li { margin: 8px 0; }

/* Progress */
.progress-head { display: flex; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.bar { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; }
.bar > div { height: 100%; width: 0; background: var(--accent); transition: width 0.25s; }
.bar > div.indeterminate { width: 30%; animation: slide 1.2s ease-in-out infinite; }
@keyframes slide { 0% { transform: translateX(-100%); } 100% { transform: translateX(400%); } }

button {
  font: inherit;
  border-radius: 8px;
  padding: 8px 14px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.ghost { margin-top: 14px; color: var(--muted); }
button:hover { filter: brightness(0.97); }

/* Report */
.report-head { margin: 28px 0 12px; }
.report-head h2 { margin: 0 0 6px; font-size: 1.5rem; line-height: 1.3; }
.report-head .meta { margin: 0; color: var(--muted); font-size: 0.9rem; }

.scores { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; margin: 16px 0; }
.score { padding: 20px; }
.score .name { font-weight: 600; margin: 0 0 8px; }
.score .value { font-size: 2.6rem; font-weight: 700; line-height: 1; letter-spacing: -0.02em; }
.score .value small { font-size: 1rem; font-weight: 500; color: var(--muted); margin-left: 4px; }
.score .verdict { margin: 10px 0 4px; font-weight: 600; }
.score .note { margin: 0; color: var(--muted); font-size: 0.92rem; }
.meter { height: 8px; background: var(--border); border-radius: 999px; overflow: hidden; margin-top: 12px; }
.meter > div { height: 100%; border-radius: 999px; }
.band-good { background: var(--good); }
.band-mid { background: var(--mid); }
.band-bad { background: var(--bad); }
.text-good { color: var(--good); }
.text-mid { color: var(--mid); }
.text-bad { color: var(--bad); }

section.block { margin: 20px 0; }
section.block h3 { margin: 0 0 12px; font-size: 1.1rem; }

.issues { margin: 0; padding-left: 22px; }
.issues li { margin: 10px 0; }
.issues .detail { display: block; color: var(--muted); font-size: 0.9rem; }
.empty { color: var(--muted); margin: 0; }

table { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
th, td { text-align: left; padding: 9px 10px; border-top: 1px solid var(--border); vertical-align: top; }
thead th { border-top: 0; color: var(--muted); font-weight: 500; font-size: 0.85rem; }
tr.group th { padding-top: 16px; color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; border-top: 0; }
td.status { white-space: nowrap; }
.fix { display: block; color: var(--muted); font-size: 0.88rem; margin-top: 2px; }
.evidence { color: var(--muted); font-size: 0.9rem; }
.table-wrap { overflow-x: auto; }

.pill {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}
.pill.present { background: var(--good-soft); color: var(--good); }
.pill.partial { background: var(--mid-soft); color: var(--mid); }
.pill.missing { background: var(--bad-soft); color: var(--bad); }
.pill.role { background: var(--accent-soft); color: var(--accent); font-weight: 500; }
.pill.error { background: var(--bad-soft); color: var(--bad); }
.unsure {
  display: inline-block;
  width: 1.2em; height: 1.2em; line-height: 1.15em;
  text-align: center;
  border: 1px dashed var(--muted);
  border-radius: 50%;
  color: var(--muted);
  font-size: 0.75rem;
  margin-left: 6px;
  vertical-align: middle;
  cursor: help;
}

/* Passages */
.passages { display: flex; flex-direction: column; gap: 6px; }
.passage { border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.passage summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 140px;
  gap: 12px;
  align-items: center;
  padding: 10px 14px;
  cursor: pointer;
  list-style: none;
}
.passage summary::-webkit-details-marker { display: none; }
.passage .heading { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.passage .pages { color: var(--muted); font-size: 0.85rem; }
.passage .clarity { display: flex; align-items: center; gap: 8px; font-variant-numeric: tabular-nums; }
.passage .clarity .meter { flex: 1; margin: 0; }
.passage .body { padding: 4px 14px 14px; border-top: 1px solid var(--border); }
.dims { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px 20px; margin: 10px 0 0; padding: 0; list-style: none; font-size: 0.9rem; }
.dims li { display: grid; grid-template-columns: 1fr auto; gap: 6px; align-items: center; }
.dims .meter { grid-column: 1 / -1; margin-top: 2px; height: 5px; }
.passage .weakest { color: var(--muted); font-size: 0.9rem; margin: 8px 0 0; }
@media (max-width: 640px) {
  .passage summary { grid-template-columns: minmax(0, 1fr) auto; }
  .passage .clarity { grid-column: 1 / -1; }
}

details.appendix-group { margin-top: 12px; }
details.appendix-group > summary { cursor: pointer; color: var(--muted); font-size: 0.92rem; padding: 6px 0; }
details.appendix-group > .passages { margin-top: 8px; opacity: 0.85; }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.stat { padding: 14px 16px; }
.stat .label { color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 6px; }
.stat .big { font-size: 1.5rem; font-weight: 600; margin: 0; }
.stat p { margin: 4px 0 0; font-size: 0.92rem; }
.stat .list { font-family: var(--mono); font-size: 0.85rem; word-break: break-word; }

details.raw { margin-top: 20px; }
details.raw summary { cursor: pointer; color: var(--muted); }
details.raw pre { max-height: 420px; overflow: auto; font-size: 0.8rem; background: var(--bg); padding: 12px; border-radius: 8px; border: 1px solid var(--border); }
.actions { display: flex; gap: 10px; margin: 24px 0; flex-wrap: wrap; }

/* Terms a passage is responsible for explaining */
.terms { margin: 10px 0 0; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 0.85rem; }
.terms-label { color: var(--muted); margin-right: 2px; }
.chip { display: inline-flex; align-items: center; gap: 4px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); }
.chip.explained { border-color: var(--good); color: var(--good); background: var(--good-soft); }
.chip.unexplained { border-color: var(--bad); color: var(--bad); background: var(--bad-soft); }
.chip.unknown { color: var(--muted); }

/* "Where it stands": one row per clarity dimension */
.dims.wide { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.small { font-size: 0.9rem; margin: 0 0 12px; }

/* Reader profile: picker on the form, switcher on the report */
.profile-pick { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; margin: 12px 0 0; font-size: 0.92rem; color: var(--muted); }
.profile-pick label { display: inline-flex; align-items: center; gap: 6px; color: var(--text); cursor: pointer; }
.profile-label { color: var(--muted); }
.profile-switch { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin-top: 10px; font-size: 0.9rem; }
.profile-switch button { padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; font: inherit; font-size: 0.88rem; }
.profile-switch button.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.provisional { border-color: var(--mid); background: var(--mid-soft); margin: 12px 0 0; padding: 10px 14px; }
.check-group summary { cursor: pointer; font-weight: 600; }
.check-group[open] summary { margin-bottom: 8px; }

/* Paragraph marks inside a passage */
.paragraphs { margin-top: 12px; font-size: 0.88rem; }
.paragraphs ul { list-style: none; margin: 6px 0 0; padding: 0; }
.paragraphs li { display: flex; gap: 8px; align-items: baseline; padding: 3px 0; }
.paragraphs li.hardest .preview { font-weight: 600; }
.pmark { display: inline-block; width: 1.2em; text-align: center; font-weight: 700; }
.pmark.ok { color: var(--good); }
.pmark.bad { color: var(--bad); }
.pmark.unsure, .pmark.na { color: var(--muted); }
.paragraphs .preview { color: var(--text); }
.pill.hardest { background: var(--mid-soft); color: var(--mid); margin-left: 4px; }
.longest { margin: 8px 0 0; color: var(--muted); }

/* Charts */
.dist { height: 88px; margin-top: 8px; }
.chart { width: 100%; min-height: 60px; }
.chart.overview { margin-bottom: 12px; }
.legend { margin: 6px 0 0; color: var(--muted); font-size: 0.82rem; display: flex; flex-wrap: wrap; gap: 4px 6px; align-items: center; }
.sw { display: inline-block; width: 14px; height: 10px; border-radius: 2px; margin-left: 10px; vertical-align: middle; }
.sw.range { background: var(--border); }
.sw.core { background: var(--muted); }
.sw.median { width: 2px; height: 14px; background: var(--text); }
.sw.dot { width: 12px; height: 12px; border-radius: 50%; background: transparent; border: 3px solid var(--text); box-sizing: border-box; }
@media (max-width: 640px) { .chart.overview, [data-chart="dims"] { min-width: 560px; } .block > div:has(> .chart) { overflow-x: auto; } }
.pill.math { background: var(--mid-soft); color: var(--mid); margin-left: 6px; }