src/graphtrace/app/static/app.css

/* Provenance Explorer. Tokens first; every colour below is a role, swapped per theme. */
:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --line: #e2e1dc;
  --line-strong: #c9c8c1;
  --text: #17171a;
  --text-2: #52514e;
  --text-3: #6d6c66;
  --accent: #2f5bd3;
  --accent-soft: #e6ecfb;
  --mark: #fdeba8;
  --mark-strong: #f6d55c;
  --good: #0a7d0a;
  --warn: #8a5a00;
  --bad: #b42e2e;
  --good-soft: #e3f3e3;
  --warn-soft: #fbf0d6;
  --bad-soft: #f9e3e3;
  --distractor: #8d8c86;
  --series-1: #2a78d6; --series-2: #eb6834; --series-3: #1baf7a; --series-4: #eda100; --series-5: #e87ba4; --series-6: #008300;
  --radius: 6px;
  --shadow: 0 8px 28px rgb(23 23 26 / 0.10);
  --mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Geist Sans", "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:where(:not([data-theme="light"])) {
    color-scheme: dark;
    --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --line: #2f2f2c; --line-strong: #45443f;
    --text: #f0efec; --text-2: #c3c2b7; --text-3: #9b9a92;
    --accent: #7d9ef0; --accent-soft: #1f2a46; --mark: #5a4a12; --mark-strong: #7a6418;
    --good: #5cc75c; --warn: #e8b44a; --bad: #ef7d7d; --good-soft: #17301a; --warn-soft: #34290f; --bad-soft: #3a1b1b;
    --distractor: #77766f;
    --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; --series-5: #d55181; --series-6: #008300;
    --shadow: 0 8px 28px rgb(0 0 0 / 0.45);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --line: #2f2f2c; --line-strong: #45443f;
  --text: #f0efec; --text-2: #c3c2b7; --text-3: #9b9a92;
  --accent: #7d9ef0; --accent-soft: #1f2a46; --mark: #5a4a12; --mark-strong: #7a6418;
  --good: #5cc75c; --warn: #e8b44a; --bad: #ef7d7d; --good-soft: #17301a; --warn-soft: #34290f; --bad-soft: #3a1b1b;
  --distractor: #77766f;
  --series-1: #3987e5; --series-2: #d95926; --series-3: #199e70; --series-4: #c98500; --series-5: #d55181; --series-6: #008300;
  --shadow: 0 8px 28px rgb(0 0 0 / 0.45);
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 14px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code, .mono { font-family: var(--mono); font-size: 0.92em; }
h1, h2, h3 { margin: 0; letter-spacing: -0.01em; }
h1 { font-size: 22px; font-weight: 600; }
h2 { font-size: 16px; font-weight: 600; }
h3 { font-size: 14px; font-weight: 600; }
p { margin: 0; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 3px; }

/* ---- top bar ---- */
.topbar { position: sticky; top: 0; z-index: 20; height: 56px; display: flex; align-items: center; gap: 24px; padding: 0 20px; background: var(--surface); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 8px; color: var(--text); font-weight: 600; white-space: nowrap; }
.brand i { font-size: 20px; color: var(--accent); }
.brand:hover { text-decoration: none; }
.tabs { display: flex; gap: 4px; }
.tabs a { padding: 6px 10px; border-radius: var(--radius); color: var(--text-2); }
.tabs a:hover { background: var(--surface-2); text-decoration: none; }
.tabs a[aria-current="page"] { color: var(--text); background: var(--surface-2); font-weight: 500; }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 8px; }
select, input[type="search"] { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 6px 10px; }
.icon-btn { display: inline-grid; place-items: center; width: 34px; height: 34px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); color: var(--text-2); cursor: pointer; font-size: 17px; }
.icon-btn:hover { color: var(--text); border-color: var(--line-strong); }
.icon-btn:active { transform: translateY(1px); }

/* ---- layout ---- */
main { max-width: 1440px; margin: 0 auto; padding: 24px 20px 64px; }
.page-head { display: grid; gap: 6px; margin-bottom: 20px; max-width: 80ch; }
.page-head p { color: var(--text-2); }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px 20px; color: var(--text-2); font-size: 13px; margin-top: 4px; }
.meta-row b { color: var(--text); font-weight: 500; }
.section { margin-top: 32px; }
.section > h2 { margin-bottom: 4px; }
.section > .lede { color: var(--text-2); margin-bottom: 14px; max-width: 80ch; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
@media (max-width: 1000px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* ---- stat strip ---- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--surface); padding: 12px 14px; }
.stat .v { font: 600 22px/1.2 var(--mono); }
.stat .k { color: var(--text-3); font-size: 12px; }

/* ---- tables ---- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { text-align: left; padding: 8px 12px; white-space: nowrap; }
th { color: var(--text-3); font-weight: 500; background: var(--surface-2); }
tbody tr + tr td { border-top: 1px solid var(--line); }
td.num { font-family: var(--mono); text-align: right; }
th.num { text-align: right; }
td .ci { color: var(--text-3); font-size: 11.5px; margin-left: 6px; }

/* ---- empty / loading / error ---- */
.empty { border: 1px dashed var(--line-strong); border-radius: var(--radius); padding: 22px; color: var(--text-2); background: var(--surface); display: grid; gap: 8px; }
.empty i { font-size: 22px; color: var(--text-3); }
.empty pre { margin: 4px 0 0; padding: 10px 12px; background: var(--surface-2); border-radius: var(--radius); overflow-x: auto; font: 12.5px/1.5 var(--mono); color: var(--text); }
.error { border-color: var(--bad); color: var(--bad); background: var(--bad-soft); }
.skeleton { background: linear-gradient(90deg, var(--surface-2), var(--line), var(--surface-2)); background-size: 200% 100%; border-radius: var(--radius); min-height: 18px; }
@media (prefers-reduced-motion: no-preference) { .skeleton { animation: shimmer 1.4s ease-in-out infinite; } }
@keyframes shimmer { from { background-position: 200% 0; } to { background-position: -200% 0; } }

/* ---- charts ---- */
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .axis text, .chart .lbl { fill: var(--text-3); font: 11px var(--sans); }
.chart .axis line, .chart .grid line { stroke: var(--line); stroke-width: 1; }
.chart .series-line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .band { opacity: 0.14; }
.chart .dot { stroke: var(--surface); stroke-width: 2; }
.chart .end-label { font: 500 11.5px var(--sans); fill: var(--text-2); }
.chart .crosshair { stroke: var(--line-strong); stroke-width: 1; }
.chart-title { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin-bottom: 8px; }
.chart-title .unit { color: var(--text-3); font-size: 12px; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; margin-top: 8px; font-size: 12px; color: var(--text-2); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i.key { display: inline-block; width: 14px; height: 2px; border-radius: 1px; }
.tooltip { position: fixed; z-index: 40; pointer-events: none; background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); box-shadow: var(--shadow); padding: 8px 10px; font-size: 12px; min-width: 160px; }
.tooltip .tt-head { color: var(--text-3); margin-bottom: 4px; }
.tooltip .tt-row { display: grid; grid-template-columns: 14px auto 1fr; align-items: center; gap: 8px; }
.tooltip .tt-row i { width: 12px; height: 2px; border-radius: 1px; }
.tooltip .tt-row b { font: 600 12px var(--mono); }
.tooltip .tt-row span { color: var(--text-2); }

/* ---- question browser ---- */
.browser { display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: 20px; align-items: start; }
.qlist { position: sticky; top: 76px; max-height: calc(100dvh - 96px); display: flex; flex-direction: column; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.qlist-tools { display: grid; gap: 8px; padding: 12px; border-bottom: 1px solid var(--line); }
.qlist-tools input { width: 100%; }
.seg { display: inline-flex; border: 1px solid var(--line-strong); border-radius: var(--radius); overflow: hidden; }
.seg button { font: inherit; font-size: 12.5px; padding: 5px 10px; border: 0; background: var(--surface); color: var(--text-2); cursor: pointer; }
.seg button + button { border-left: 1px solid var(--line-strong); }
.seg button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 500; }
.qitems { overflow-y: auto; }
.qitem { display: block; width: 100%; text-align: left; padding: 10px 12px; border: 0; border-bottom: 1px solid var(--line); background: none; color: inherit; font: inherit; cursor: pointer; }
.qitem:hover { background: var(--surface-2); }
.qitem[aria-current="true"] { background: var(--accent-soft); box-shadow: inset 3px 0 0 var(--accent); }
.qitem .q { font-weight: 500; line-height: 1.4; }
.qitem .t { color: var(--text-3); font-size: 12px; margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qcount { padding: 8px 12px; color: var(--text-3); font-size: 12px; }
@media (max-width: 900px) { .browser { grid-template-columns: minmax(0, 1fr); } .qlist { position: static; max-height: 360px; } }

/* ---- question detail ---- */
.qhead { display: grid; gap: 8px; }
.qhead .paper { color: var(--text-2); font-size: 13px; }
.gold { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--text-2); }
.chip { display: inline-flex; align-items: center; gap: 5px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); font-size: 12px; color: var(--text-2); }
.chip.gold-ans { color: var(--text); }
.toolbar { display: flex; flex-wrap: wrap; gap: 12px 20px; align-items: center; margin: 16px 0 10px; }
.toolbar .label { color: var(--text-3); font-size: 12px; margin-right: 6px; }

/* document strip: one cell per chunk, in document order */
.docstrip { display: grid; gap: 6px; }
.strip-row { display: grid; grid-template-columns: 120px minmax(0, 1fr); align-items: center; gap: 10px; }
.strip-row .name { font-size: 12px; color: var(--text-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cells { display: flex; gap: 2px; min-height: 18px; }
.cell { flex: 1 1 0; min-width: 3px; height: 18px; border-radius: 2px; background: var(--surface-2); border: 1px solid var(--line); cursor: pointer; padding: 0; }
.cell.distractor { background: repeating-linear-gradient(135deg, var(--surface-2) 0 3px, var(--line-strong) 3px 4px); }
.cell.gold { background: var(--mark-strong); border-color: var(--warn); }
.cell.in { border-color: var(--accent); box-shadow: inset 0 -4px 0 var(--accent); }
.strip-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 12px; color: var(--text-3); margin-top: 4px; }
.strip-legend span { display: inline-flex; align-items: center; gap: 6px; }
.strip-legend .cell { flex: none; width: 14px; height: 12px; cursor: default; }

/* system answers */
.answers { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(340px, 100%), 1fr)); gap: 16px; margin-top: 20px; }
.answer-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px; display: grid; gap: 10px; align-content: start; }
.answer-card header { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.answer-card .sys { font-weight: 600; }
.answer-card .kind { color: var(--text-3); font-size: 12px; }
.answer-text { font-size: 15px; font-weight: 500; }
.answer-text.abstain { color: var(--text-2); font-style: italic; }
.stmt { display: grid; gap: 6px; padding-top: 10px; border-top: 1px solid var(--line); }
.stmt p { line-height: 1.5; }
.stmt.dropped p { color: var(--text-3); text-decoration: line-through; text-decoration-color: var(--line-strong); }
.stmt .revised-from { color: var(--text-3); font-size: 12px; }
.cites { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.cite { font: 500 12px var(--mono); padding: 2px 7px; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--surface-2); color: var(--text); cursor: pointer; }
.cite:hover { border-color: var(--accent); }
.cite.distractor { border-style: dashed; }
.cite.invalid { color: var(--bad); border-color: var(--bad); background: var(--bad-soft); cursor: default; }
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 11.5px; padding: 1px 7px; border-radius: 999px; font-weight: 500; }
.badge i { font-size: 13px; }
.badge.good { color: var(--good); background: var(--good-soft); }
.badge.warn { color: var(--warn); background: var(--warn-soft); }
.badge.bad { color: var(--bad); background: var(--bad-soft); }
.badge.neutral { color: var(--text-2); background: var(--surface-2); }
.usage { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--text-3); font-size: 12px; font-family: var(--mono); }
details.more { border-top: 1px solid var(--line); padding-top: 8px; }
details.more summary { cursor: pointer; color: var(--text-2); font-size: 12.5px; }
details.more[open] summary { margin-bottom: 8px; }
.note { padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); font-size: 12.5px; display: grid; gap: 4px; }
.note + .note { margin-top: 6px; }
.note .q-ok { background: var(--mark); border-radius: 2px; }
.note .q-bad { color: var(--bad); text-decoration: underline wavy var(--bad); text-underline-offset: 3px; }

/* ---- drawer ---- */
.drawer { position: fixed; z-index: 30; top: 0; right: 0; height: 100dvh; width: min(560px, 100vw); background: var(--surface); border-left: 1px solid var(--line); box-shadow: var(--shadow); transform: translateX(105%); visibility: hidden; display: flex; flex-direction: column; }
.drawer.open { transform: none; visibility: visible; }
@media (prefers-reduced-motion: no-preference) { .drawer { transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.28s; } }
.drawer-head { display: flex; justify-content: space-between; gap: 12px; align-items: start; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.drawer-kicker { font: 12px var(--mono); color: var(--text-3); word-break: break-all; }
.drawer-body { padding: 16px 18px 40px; overflow-y: auto; display: grid; gap: 14px; align-content: start; }
.source { font-size: 14px; line-height: 1.7; white-space: pre-wrap; }
.source .sec { display: block; font-weight: 600; color: var(--text-2); margin: 6px 0 2px; }
.source mark { background: var(--mark); color: inherit; border-radius: 2px; padding: 0 1px; }
.source .overlap { color: var(--text-3); }
.callout { border-radius: var(--radius); padding: 10px 12px; font-size: 13px; display: flex; gap: 8px; align-items: start; }
.callout i { font-size: 16px; margin-top: 1px; }
.callout.warn { background: var(--warn-soft); color: var(--warn); }
.callout.info { background: var(--surface-2); color: var(--text-2); }
.judgement { display: grid; gap: 4px; font-size: 13px; }

/* ---- small screens ---- */
@media (max-width: 640px) {
  .topbar { gap: 10px; padding: 0 12px; }
  .brand span { display: none; }
  .tabs a { padding: 6px 8px; }
  main { padding: 16px 16px 48px; }
  .strip-row { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .toolbar { gap: 10px; }
  th, td { padding: 6px 8px; }
}

/* ---- GraphTrace additions ---- */
.triple { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font-size: 13px; }
.ent { display: inline-flex; align-items: center; gap: 5px; padding: 2px 8px; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--surface); font-weight: 500; }
.ent small { color: var(--text-3); font-weight: 400; font-size: 11px; }
.rel { font: 12px var(--mono); color: var(--accent); }
.step { display: grid; gap: 8px; padding: 12px 0; }
.step + .step { border-top: 1px solid var(--line); }
blockquote.q { margin: 0; padding: 8px 12px; border-left: 3px solid var(--mark-strong); background: var(--surface-2); border-radius: 0 var(--radius) var(--radius) 0; font-size: 13px; }
.src-link { font: 12px var(--mono); color: var(--text-3); background: none; border: 0; padding: 0; cursor: pointer; text-align: left; }
.src-link:hover { color: var(--accent); }
.kv { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 4px 14px; font-size: 13px; }
.kv dt { color: var(--text-3); }
.kv dd { margin: 0; }
.review-form { display: grid; gap: 10px; }
.review-form label { display: grid; gap: 4px; font-size: 12.5px; color: var(--text-2); }
.review-form input, .review-form textarea, .review-form select { font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--line-strong); border-radius: var(--radius); padding: 6px 10px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; }
.btn { font: inherit; font-weight: 500; padding: 7px 14px; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); cursor: pointer; display: inline-flex; gap: 6px; align-items: center; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn.primary { color: #0f1424; }
@media (prefers-color-scheme: dark) { :root:where(:not([data-theme="light"])) .btn.primary { color: #0f1424; } }
.btn:active { transform: translateY(1px); }
.graph-svg { width: 100%; max-width: 760px; margin: 0 auto; height: auto; display: block; }
.graph-svg .edge { stroke: var(--line-strong); stroke-width: 1.5; }
.graph-svg .node circle { stroke: var(--surface); stroke-width: 2; cursor: pointer; }
.graph-svg .node text { font: 11px var(--sans); fill: var(--text-2); pointer-events: none; }
.graph-svg .node.center text { fill: var(--text); font-weight: 600; }
.type-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; }
.bars { display: grid; gap: 6px; font-size: 13px; }
.bars .row { display: grid; grid-template-columns: 140px minmax(0, 1fr) 56px; align-items: center; gap: 10px; }
.bars .bar { height: 10px; border-radius: 0 4px 4px 0; background: var(--series-1); }
.bars .num { font-family: var(--mono); text-align: right; color: var(--text-2); }

/* ---- try it ---- */
.qlist-tools textarea, .review-form textarea { width: 100%; resize: vertical; }
.review-form input[type="checkbox"] { margin-top: 3px; accent-color: var(--accent); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }