:root {
  --bg: #f6f7f9; --card: #ffffff; --text: #1d2330; --muted: #667085; --line: #e4e7ec;
  --accent: #2f6fdf; --good: #138a4b; --bad: #c4321f; --warn-bg: #fff4dc; --warn: #8a5a00;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b; --card: #1b1f27; --text: #e7eaf0; --muted: #98a2b3; --line: #2c323d;
    --accent: #6b9cff; --good: #4cc38a; --bad: #ff7b6b; --warn-bg: #3a2e12; --warn: #f3c46b;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
header { display: flex; align-items: center; gap: 24px; padding: 12px 24px;
  background: var(--card); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 1; flex-wrap: wrap; }
nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 6px; }
nav a.active { color: var(--text); background: var(--bg); font-weight: 600; }
main { max-width: 1100px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 28px 0 10px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.login { max-width: 360px; margin: 12vh auto; display: grid; gap: 12px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input, select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 6px; padding: 7px 9px; width: 100%; }
button { font: inherit; border: 0; border-radius: 6px; padding: 8px 14px; cursor: pointer;
  background: var(--accent); color: #fff; }
button.secondary { background: var(--bg); color: var(--text); border: 1px solid var(--line); }
button.danger { background: transparent; color: var(--bad); border: 1px solid var(--bad); }
button.link { background: none; color: var(--muted); padding: 4px; }
button.small { padding: 4px 10px; font-size: 13px; }
.error { color: var(--bad); min-height: 1em; margin: 0; font-size: 13px; }
.muted { color: var(--muted); }
.note { font-size: 13px; color: var(--muted); }
.badge { background: var(--bad); color: #fff; border-radius: 10px; padding: 0 7px; font-size: 12px; }
.tag { display: inline-block; font-size: 11px; padding: 1px 6px; border-radius: 4px;
  background: var(--warn-bg); color: var(--warn); white-space: nowrap; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 8px; }
.tile .label { font-size: 12px; color: var(--muted); }
.tile .value { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
th { font-size: 12px; color: var(--muted); font-weight: 600; background: var(--card); }
td.num, th.num { text-align: right; }
tr:last-child td { border-bottom: 0; }
tbody tr.clickable:hover { background: var(--bg); cursor: pointer; }
.pos { color: var(--good); } .neg { color: var(--bad); }
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: end; margin-bottom: 12px; }
.filters label { min-width: 140px; }
.filters .spacer { flex: 1; }
dialog { border: 1px solid var(--line); border-radius: 12px; background: var(--card); color: var(--text);
  width: min(560px, calc(100vw - 32px)); padding: 20px; }
dialog::backdrop { background: rgb(0 0 0 / .4); }
dialog form { display: grid; gap: 12px; }
dialog h2 { margin: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.actions { display: flex; gap: 8px; align-items: center; }
.spacer { flex: 1; }
table.grid td.cell { cursor: pointer; }
table.grid td.cell:hover { outline: 2px solid var(--accent); outline-offset: -2px; }
table.grid td.missing { background: var(--warn-bg); color: var(--warn); font-size: 12px; }
table.grid td.review { background: var(--warn-bg); }
table.grid tr.future td { color: var(--muted); opacity: .6; }
table.grid tfoot td { border-top: 2px solid var(--line); }
table.grid td:first-child, table.grid th:first-child { position: sticky; left: 0; background: var(--card); }
details.formulas { margin-top: 24px; }
details.formulas summary { cursor: pointer; color: var(--muted); }
@media (max-width: 600px) {
  header { padding: 10px 16px; gap: 8px; }
  .grid2 { grid-template-columns: 1fr; }
}

/* Work view: chart + analysis. Series colors validated with the dataviz checker (light and dark). */
:root { --s1: #2a78d6; --s2: #eb6834; --grid: #eceef2; }
@media (prefers-color-scheme: dark) { :root { --s1: #3987e5; --s2: #d95926; --grid: #262b34; } }
.chart-card { padding: 12px 16px 8px; }
.chart-wrap { position: relative; overflow-x: auto; }
.legend { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-bottom: 6px; }
.sw { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.sw.s1 { background: var(--s1); } .sw.s2 { background: var(--s2); }
.sw.target { width: 9px; height: 9px; transform: rotate(45deg); background: var(--text); border-radius: 1px; }
svg .grid-line { stroke: var(--grid); stroke-width: 1; }
svg .axis { fill: var(--muted); font-size: 11px; }
svg .axis.strong { fill: var(--text); font-weight: 600; }
svg .line { fill: none; stroke-width: 2; stroke-linejoin: round; }
svg .line.s1 { stroke: var(--s1); } svg .line.s2 { stroke: var(--s2); }
svg .s1-dot { fill: var(--s1); stroke: var(--card); stroke-width: 2; }
svg .s2-dot { fill: var(--s2); stroke: var(--card); stroke-width: 2; }
svg .target-mark { fill: var(--text); stroke: var(--card); stroke-width: 2; }
svg .xhair { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.tip { position: absolute; background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 8px 10px; font-size: 13px; pointer-events: none; box-shadow: 0 4px 12px rgb(0 0 0 / .12); white-space: nowrap; }
.analysis ul { margin: 0; padding-left: 18px; display: grid; gap: 8px; }
h2 button.small { margin-left: 8px; vertical-align: middle; }