:root {
  color-scheme: light;
  --bg: #f6f6f4;
  --surface: #fcfcfb;
  --border: #e3e2de;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --ink-3: #7a7974;
  --accent: #1f3a5f;
  --accent-ink: #ffffff;
  --series-1: #2a78d6;   /* product spend / invoiced price */
  --series-2: #eb6834;   /* fees */
  --ref: #8a8f98;        /* contract-allowed reference line */
  --good: #0a7d3c;
  --warn: #b26b00;
  --bad: #c0302f;
  --chip: #eef2f7;
  --radius: 10px;
  --font: "Inter", 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; --border: #2e2d2b;
    --ink: #f0efec; --ink-2: #c3c2b7; --ink-3: #8f8e86;
    --accent: #9cb8de; --accent-ink: #0b0b0b;
    --series-1: #3987e5; --series-2: #d95926; --ref: #8f8e86;
    --good: #4cc27f; --warn: #e3a33a; --bad: #e66767; --chip: #23262b;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --border: #2e2d2b;
  --ink: #f0efec; --ink-2: #c3c2b7; --ink-3: #8f8e86;
  --accent: #9cb8de; --accent-ink: #0b0b0b;
  --series-1: #3987e5; --series-2: #d95926; --ref: #8f8e86;
  --good: #4cc27f; --warn: #e3a33a; --bad: #e66767; --chip: #23262b;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 var(--font); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 24px; margin: 0 0 4px; letter-spacing: -0.01em; }
h2 { font-size: 16px; margin: 0 0 12px; }
.muted { color: var(--ink-2); }
.small { font-size: 13px; }

.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar .inner { max-width: 1200px; margin: 0 auto; padding: 12px 16px; display: flex; gap: 24px;
  align-items: center; flex-wrap: wrap; }
.brand { font-weight: 700; color: var(--ink); letter-spacing: -0.01em; }
.brand span { color: var(--ink-3); font-weight: 500; }
.nav { display: flex; gap: 4px; flex-wrap: wrap; }
.nav a { color: var(--ink-2); padding: 6px 10px; border-radius: 6px; }
.nav a.on, .nav a:hover { background: var(--chip); color: var(--ink); text-decoration: none; }
.spacer { flex: 1; }

main { max-width: 1200px; margin: 0 auto; padding: 24px 16px 64px; }
.head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px;
  flex-wrap: wrap; margin-bottom: 20px; }

.grid { display: grid; gap: 16px; }
.kpis { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin-bottom: 16px; }
.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); margin-bottom: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 18px; min-width: 0; }
.kpi .label { color: var(--ink-2); font-size: 13px; }
.kpi .value { font-size: 28px; font-weight: 700; letter-spacing: -0.02em; margin-top: 2px;
  font-variant-numeric: tabular-nums; }
.kpi .sub { color: var(--ink-3); font-size: 12px; }
.kpi.hero { border-color: var(--accent); }

.chart { position: relative; height: 260px; }
.chart.tall { height: 320px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--ink-2); font-weight: 600; font-size: 12px; text-transform: uppercase;
  letter-spacing: .03em; border-bottom: 1px solid var(--border); padding: 8px 10px; white-space: nowrap; }
td { border-bottom: 1px solid var(--border); padding: 8px 10px; vertical-align: top; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-wrap { overflow-x: auto; }

.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0;
  padding: 9px 16px; border-radius: 8px; font: 600 14px var(--font); cursor: pointer; }
.btn:hover { text-decoration: none; opacity: .92; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--border); }
input[type=email], input[type=text], select { font: 15px var(--font); padding: 9px 11px;
  border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--ink); }
label { font-size: 13px; color: var(--ink-2); display: block; margin-bottom: 4px; }

.pill { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 99px;
  background: var(--chip); color: var(--ink-2); white-space: nowrap; }
.pill.high::before, .pill.medium::before, .pill.low::before { content: "●"; margin-right: 4px; }
.pill.high::before { color: var(--bad); }
.pill.medium::before { color: var(--warn); }
.pill.low::before { color: var(--ink-3); }
.pill.done { color: var(--good); }
.pill.error { color: var(--bad); }

.drop { border: 2px dashed var(--border); border-radius: var(--radius); padding: 28px; text-align: center;
  background: var(--surface); }
.drop.over { border-color: var(--accent); }
.banner { background: var(--chip); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px;
  display: flex; gap: 12px; align-items: center; }
.spin { width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: s 0.8s linear infinite; }
@keyframes s { to { transform: rotate(360deg); } }
.empty { text-align: center; padding: 48px 16px; }
.filters { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 12px; }
.bar-row { display: grid; grid-template-columns: minmax(140px, 1.2fr) 2fr auto; gap: 10px; align-items: center;
  padding: 6px 0; font-size: 14px; }
.bar-track { background: var(--chip); border-radius: 4px; height: 12px; }
.bar-fill { background: var(--series-1); height: 12px; border-radius: 0 4px 4px 0; }
.login { max-width: 400px; margin: 10vh auto; }
.legend { display: flex; gap: 16px; font-size: 13px; color: var(--ink-2); margin-bottom: 8px; }
.legend i { display: inline-block; width: 18px; height: 3px; vertical-align: middle; margin-right: 6px;
  border-radius: 2px; }
dl.terms { display: grid; grid-template-columns: max-content 1fr; gap: 6px 20px; margin: 0; }
dl.terms dt { color: var(--ink-2); }
dl.terms dd { margin: 0; }
@media (max-width: 600px) { .bar-row { grid-template-columns: 1fr auto; } .bar-track { display: none; } }