:root {
  color-scheme: light;
  --bg: #f6f6f3;
  --surface: #ffffff;
  --line: #e3e2dc;
  --line-strong: #c9c8c0;
  --ink: #16161a;
  --ink-2: #52514e;
  --ink-3: #6f6e69;
  --accent: #1f3a5f;
  --accent-soft: #e8eef6;
  --warn-bg: #fff4dc;
  --warn-ink: #6b4a00;
  --err-bg: #fdecea;
  --err-ink: #8a1f14;
  /* categorical slots (validated reference palette, light) */
  --s1: #2a78d6;
  --s2: #eb6834;
  --s3: #1baf7a;
  --s4: #4a3aa7;
  --s5: #e87ba4;
  --radius: 12px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
h1 { font-size: 22px; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 19px; margin: 0; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.sub { color: var(--ink-2); font-size: 14px; margin: 4px 0 0; }
button, select, input { font: inherit; }
.btn { border: 1px solid var(--line-strong); background: var(--surface); color: var(--ink); border-radius: 8px; padding: 6px 12px; cursor: pointer; font-size: 14px; }
.btn:hover { border-color: var(--ink-3); }
.btn.ghost { background: transparent; }
.btn:disabled { opacity: .55; cursor: default; }
:focus-visible { outline: 3px solid var(--s1); outline-offset: 2px; }

/* Controls bar — sticky so it stays visible while screen sharing */
.bar { position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--line); }
.bar-in { max-width: 1280px; margin: 0 auto; padding: 14px 24px 10px; }
.title-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.sync { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sync-state { font-size: 14px; color: var(--ink-2); }
.sync-state.stale { color: var(--warn-ink); background: var(--warn-bg); padding: 2px 8px; border-radius: 6px; }
.sync-state.err { color: var(--err-ink); background: var(--err-bg); padding: 2px 8px; border-radius: 6px; }
.period-row { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 12px; }
.presets { display: flex; flex-wrap: wrap; gap: 0; border: 1px solid var(--line-strong); border-radius: 8px; overflow: hidden; }
.presets button { border: 0; border-right: 1px solid var(--line-strong); background: var(--surface); padding: 6px 12px; cursor: pointer; font-size: 14px; color: var(--ink); }
.presets button:last-child { border-right: 0; }
.presets button[aria-pressed="true"] { background: var(--accent); color: #fff; }
.custom { display: inline-flex; gap: 8px; align-items: center; font-size: 14px; flex-wrap: wrap; }
.custom[hidden] { display: none; }
.custom input { padding: 4px 6px; border: 1px solid var(--line-strong); border-radius: 6px; }
.compare { display: flex; gap: 8px; align-items: center; font-size: 14px; flex-wrap: wrap; }
.compare select, .trend-ctl select { padding: 5px 8px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--surface); }
.periods { margin: 8px 0 0; font-size: 14px; color: var(--ink-2); }
.periods b { color: var(--ink); font-weight: 600; }

main { max-width: 1280px; margin: 0 auto; padding: 20px 24px 64px; }
.banner { border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px; font-size: 15px; background: var(--warn-bg); color: var(--warn-ink); }
.banner.err { background: var(--err-bg); color: var(--err-ink); }
.block { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 24px; margin-top: 24px; }
.block-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.trend-ctl { display: flex; gap: 12px; font-size: 14px; color: var(--ink-2); }

/* Headline cards */
.cards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; display: flex; flex-direction: column; gap: 6px; text-align: left; cursor: pointer; color: inherit; font: inherit; border-top: 4px solid var(--c); }
.card:hover { border-color: var(--line-strong); border-top-color: var(--c); }
.card .name { font-size: 15px; font-weight: 600; }
.card .big { font-size: 44px; font-weight: 700; line-height: 1.05; letter-spacing: -0.02em; font-variant-numeric: tabular-nums; }
.card .big.na { font-size: 22px; color: var(--ink-3); font-weight: 600; }
.card .vs { font-size: 14px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.card .delta { font-size: 15px; font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.card .second { font-size: 14px; color: var(--ink-2); }
.card .def { font-size: 13px; color: var(--ink-3); margin-top: 4px; }
.badge { display: inline-block; font-size: 12px; font-weight: 600; padding: 1px 7px; border-radius: 999px; background: var(--warn-bg); color: var(--warn-ink); margin-left: 6px; vertical-align: 2px; }
.badge.na { background: #eeeeea; color: var(--ink-2); }
.context { font-size: 14px; color: var(--ink-2); margin: 12px 2px 0; }
.context button { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; cursor: pointer; font: inherit; }

/* Charts */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 28px; margin-top: 16px; }
.chart h3 { font-size: 15px; margin: 0; display: flex; align-items: center; gap: 8px; }
.chart h3 .sw { width: 12px; height: 12px; border-radius: 3px; background: var(--c); display: inline-block; }
.chart .scale { font-size: 12px; color: var(--ink-3); margin: 2px 0 6px; }
.chart svg { width: 100%; height: auto; display: block; overflow: visible; }
.chart .axis text { font-size: 11px; fill: var(--ink-3); }
.chart .grid line { stroke: var(--line); }
.chart .bar { cursor: pointer; }
.chart .val { font-size: 11px; fill: var(--ink-2); font-variant-numeric: tabular-nums; }
.chart .na-label { font-size: 10px; fill: var(--ink-3); }
.legend-note { font-size: 12px; color: var(--ink-3); margin-top: 12px; display: flex; gap: 16px; flex-wrap: wrap; align-items: center; }
.legend-note .key { display: inline-block; width: 14px; height: 10px; border-radius: 2px; margin-right: 5px; vertical-align: -1px; }

/* Month table */
.table-wrap { overflow-x: auto; margin-top: 12px; }
table.months { border-collapse: collapse; width: 100%; font-variant-numeric: tabular-nums; font-size: 15px; }
.months th, .months td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: right; white-space: nowrap; }
.months th:first-child, .months td:first-child { text-align: left; }
.months thead th { font-size: 13px; color: var(--ink-2); font-weight: 600; vertical-align: bottom; }
.months td button { background: none; border: 0; padding: 2px 4px; font: inherit; color: var(--ink); cursor: pointer; border-radius: 4px; text-decoration: underline dotted var(--ink-3); text-underline-offset: 3px; }
.months td button:hover { background: var(--accent-soft); }
.months .tag { font-size: 12px; color: var(--warn-ink); background: var(--warn-bg); padding: 0 6px; border-radius: 999px; margin-left: 6px; }
.months .muted { color: var(--ink-3); }

/* Backlog */
.backlog { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 12px; }
.bl { border: 1px solid var(--line); border-radius: 10px; padding: 16px; }
.bl h3 { font-size: 15px; margin: 0; }
.bl .tot { font-size: 34px; font-weight: 700; font-variant-numeric: tabular-nums; background: none; border: 0; padding: 0; cursor: pointer; color: var(--ink); text-align: left; }
.bl .unit { font-size: 13px; color: var(--ink-2); }
.bl .rows { margin-top: 10px; display: grid; gap: 6px; }
.bl .row { display: grid; grid-template-columns: 104px 1fr 48px; gap: 8px; align-items: center; font-size: 13px; background: none; border: 0; padding: 2px 0; cursor: pointer; text-align: left; color: var(--ink); font-variant-numeric: tabular-nums; }
.bl .row:hover .lab { text-decoration: underline; }
.bl .track { display: block; height: 10px; background: #efeee9; border-radius: 3px; overflow: hidden; }
.bl .fill { display: block; height: 100%; background: var(--ink-3); border-radius: 3px; }
.bl .row .n { text-align: right; }
.bl .basis { font-size: 12px; color: var(--ink-3); margin-top: 8px; }

/* Tooltip */
.tip { position: fixed; z-index: 50; pointer-events: none; background: var(--ink); color: #fff; font-size: 13px; padding: 8px 10px; border-radius: 8px; max-width: 280px; box-shadow: 0 4px 16px rgba(0,0,0,.18); }
.tip b { font-variant-numeric: tabular-nums; }

/* Dialogs */
dialog { border: 0; border-radius: 14px; padding: 0; width: min(1100px, calc(100vw - 32px)); max-height: calc(100vh - 48px); box-shadow: 0 24px 64px rgba(0,0,0,.25); color: var(--ink); background: var(--surface); }
dialog::backdrop { background: rgba(20,20,26,.45); }
dialog[open] { display: flex; flex-direction: column; }
.dlg-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; padding: 18px 22px 10px; border-bottom: 1px solid var(--line); }
.dlg-tools { display: flex; gap: 12px; align-items: center; padding: 10px 22px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.dlg-tools input { flex: 1 1 260px; padding: 7px 10px; border: 1px solid var(--line-strong); border-radius: 8px; }
.dlg-body { overflow: auto; padding: 8px 22px 20px; }
table.recs { border-collapse: collapse; width: 100%; font-size: 14px; }
.recs th, .recs td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.recs th { position: sticky; top: 0; background: var(--surface); font-size: 13px; color: var(--ink-2); }
.recs td.d { white-space: nowrap; font-variant-numeric: tabular-nums; }
.recs a { color: var(--accent); }
.recs .why { color: var(--ink-2); font-size: 13px; }
.recs .subrec { font-size: 13px; color: var(--ink-2); margin-top: 4px; }
.prose h3 { font-size: 16px; margin: 20px 0 6px; }
.prose p, .prose li { font-size: 14px; color: var(--ink-2); }
.prose dl { display: grid; grid-template-columns: 160px 1fr; gap: 4px 16px; font-size: 14px; margin: 6px 0; }
.prose dt { color: var(--ink-3); }
.prose dd { margin: 0; }
.prose table { border-collapse: collapse; font-size: 13px; margin: 6px 0; }
.prose td, .prose th { border-bottom: 1px solid var(--line); padding: 4px 10px 4px 0; text-align: left; }
.prose td.n { text-align: right; font-variant-numeric: tabular-nums; }

@media (max-width: 1000px) {
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .backlog { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .bar { position: static; }
  .bar-in, main { padding-left: 16px; padding-right: 16px; }
  .charts { grid-template-columns: 1fr; }
  .cards { grid-template-columns: 1fr; }
  .card .big { font-size: 38px; }
  .block { padding: 16px; }
  .prose dl { grid-template-columns: 1fr; }
}