:root {
  color-scheme: dark;
  /* OTG brand (otgfitness.com) */
  --otg-red: #d80809;
  --otg-black: #021010;
  --otg-gray: #999999;
  --otg-light: #e9ecef;

  --bg: #080c0c;
  --surface-1: #141919;
  --surface-2: #1c2222;
  --border: #2a3131;
  --text-primary: #f0efec;
  --text-secondary: #c3c2b7;
  --text-muted: #8d918c;

  /* categorical (dataviz reference palette, dark steps) */
  --series-1: #3987e5;
  --series-2: #d95926;
  --series-3: #199e70;
  --series-4: #c98500;
  --series-5: #d55181;
  --series-6: #008300;
  --series-7: #9085e9;
  --compare: #6b706c;

  /* attendance cells: status colors, softened so the number on top stays readable */
  --cell-ok: rgba(12, 163, 12, .32);
  --cell-low: rgba(208, 59, 59, .42);
  --cell-pause: #2c3333;

  /* status (reserved) */
  --good: #0ca30c;
  --warning: #fab219;
  --critical: #d03b3b;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font: 14px/1.45 Helvetica, "Helvetica Neue", Arial, sans-serif;
}
h1, h2, .brand, .hero-value, .kpi-value { font-family: "Bebas Neue", Helvetica, sans-serif; letter-spacing: .02em; font-weight: 400; }
h2 { font-size: 22px; margin: 0; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 24px; background: var(--otg-black); border-bottom: 3px solid var(--otg-red);
}
.brand { font-size: 28px; }
.brand-otg { color: var(--otg-red); }
.brand-sub { color: var(--text-primary); }
.updated { color: var(--text-muted); font-size: 12px; text-align: right; }

.sticky { position: sticky; top: 0; z-index: 5; background: rgba(8, 12, 12, .97); border-bottom: 1px solid var(--border); }
.tabs { display: flex; gap: 4px; padding: 10px 24px 0; overflow-x: auto; scrollbar-width: none; }
.tabs button {
  background: none; border: 0; border-bottom: 3px solid transparent; color: var(--text-secondary);
  font: 400 20px/1 "Bebas Neue", Helvetica, sans-serif; letter-spacing: .04em; padding: 8px 14px 9px; cursor: pointer; white-space: nowrap;
}
.tabs button:hover { color: var(--text-primary); }
.tabs button.on { color: var(--text-primary); border-bottom-color: var(--otg-red); }
.tabs button:focus-visible, .seg button:focus-visible, .tile:focus-visible { outline: 2px solid var(--otg-red); outline-offset: 2px; }
.filters {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px;
  padding: 10px 24px 12px;
}
.filters label { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); }
select, input[type=date] {
  background: var(--surface-2); color: var(--text-primary); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; font: inherit;
}
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.seg button {
  background: var(--surface-1); color: var(--text-secondary); border: 0; padding: 7px 14px; font: inherit; cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--otg-red); color: #fff; }
.seg.small button { padding: 5px 10px; font-size: 13px; }
.range-label { color: var(--text-muted); margin-left: auto; font-size: 13px; }
.custom { display: inline-flex; align-items: center; gap: 6px; color: var(--text-muted); }

main { padding: 20px 24px 40px; max-width: 1400px; margin: 0 auto; }

.hero {
  display: grid; grid-template-columns: minmax(260px, 1.2fr) repeat(3, minmax(160px, 1fr)); gap: 14px; margin-bottom: 14px;
}
.hero-main, .hero-side, .kpi {
  background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px;
}
.hero-main { border-left: 4px solid var(--otg-red); }
.hero-label, .kpi-label { color: var(--text-secondary); font-size: 13px; }
.hero-value { font-size: 64px; line-height: 1; margin: 6px 0 4px; }
.hero-side .kpi-value { font-size: 40px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 14px; margin-bottom: 20px; }
.kpi-value { font-size: 36px; line-height: 1.05; margin: 4px 0 2px; }
.kpi-value.na { color: var(--text-muted); font-size: 22px; font-family: Helvetica, sans-serif; }
.delta { font-size: 12.5px; color: var(--text-secondary); }
.delta .arrow { font-weight: 700; }
.delta.better .arrow { color: var(--good); }
.delta.worse .arrow { color: var(--critical); }
.target { margin-top: 6px; font-size: 12px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }
.badge { display: inline-flex; align-items: center; gap: 4px; padding: 1px 7px; border-radius: 999px; font-size: 11.5px; border: 1px solid; white-space: nowrap; flex-shrink: 0; }
.badge.good { color: var(--good); border-color: var(--good); }
.badge.warning { color: var(--warning); border-color: var(--warning); }
.badge.critical { color: var(--critical); border-color: var(--critical); }
.src { font-size: 11px; color: var(--text-muted); margin-top: 4px; }
.bench { font-size: 11px; color: var(--text-secondary, var(--text-muted)); margin-top: 6px; padding-top: 6px; border-top: 1px dashed var(--border, rgba(255,255,255,.12)); }

.panel { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px; margin-bottom: 16px; }
.panel-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 10px; margin-bottom: 10px; }
.panel-controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.sub { color: var(--text-muted); font-size: 12.5px; }
.note { color: var(--text-muted); font-size: 12px; margin: 8px 0 0; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.two-col .panel { margin-bottom: 16px; }
.chart-wrap { position: relative; height: 260px; }
.chart-wrap.tall { height: 320px; }

.insights { border-left: 4px solid var(--otg-red); }
.insights ul { margin: 10px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.insights li { display: grid; grid-template-columns: 22px 1fr; gap: 8px; align-items: start; }
.insights .ic { font-weight: 700; text-align: center; }
.insights .ic.good { color: var(--good); }
.insights .ic.warning { color: var(--warning); }
.insights .ic.critical { color: var(--critical); }
.insights b { color: var(--text-primary); }
.insights span.t { color: var(--text-secondary); }

.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
table.data th, table.data td { padding: 8px 10px; text-align: right; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data th { color: var(--text-secondary); font-weight: 600; font-size: 12.5px; }
table.data th:first-child, table.data td:first-child { text-align: left; }
table.data tr.total td { font-weight: 700; border-top: 2px solid var(--border); }
.swatch { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 8px; vertical-align: middle; }

.bars { display: grid; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 150px 1fr 60px; gap: 10px; align-items: center; }
.bar-row .lbl { color: var(--text-secondary); }
.bar-track { display: block; height: 14px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.bar-fill { display: block; height: 100%; background: var(--series-1); border-radius: 0 4px 4px 0; }
.bar-row .val { text-align: right; font-variant-numeric: tabular-nums; }

.kpis.inner { margin-bottom: 16px; }
.kpis.inner .kpi { background: var(--surface-2); }
.two-col.flush { gap: 24px; }
h3.mini { font-size: 13px; font-weight: 600; color: var(--text-secondary); margin: 0 0 8px; letter-spacing: 0; }
table.heat { border-collapse: separate; border-spacing: 2px; font-size: 11.5px; font-variant-numeric: tabular-nums; }
table.heat th { color: var(--text-muted); font-weight: 600; padding: 2px 6px; text-align: center; }
table.heat th.t { text-align: right; }
table.heat td { min-width: 38px; height: 22px; text-align: center; border-radius: 3px; color: var(--text-primary); }
table.heat td.empty { background: transparent; }

.ltv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.ltv-grid .kpi { padding: 12px 14px; }

.sources-note ul { color: var(--text-secondary); margin: 8px 0 0; padding-left: 18px; }
.sources-note li { margin: 4px 0; }

/* Home */
.home-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; margin-bottom: 16px; }
.home-group { background: var(--surface-1); border: 1px solid var(--border); border-radius: 10px; padding: 14px 16px 16px; }
.home-group h2 { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px; }
.home-group h2 a { font: 13px Helvetica, Arial, sans-serif; color: var(--text-secondary); text-decoration: none; letter-spacing: 0; }
.home-group h2 a:hover { color: var(--text-primary); }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; }
.tile { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; cursor: pointer; text-align: left; color: inherit; font: inherit; }
.tile:hover { border-color: var(--text-muted); }
.tile .kpi-value { font-size: 30px; }

.kpi.clickable { cursor: pointer; }
.kpi.clickable:hover { border-color: var(--text-muted); }
.kpi.clickable:focus-visible { outline: 2px solid var(--otg-red); outline-offset: 2px; }
.kpi .more { font-size: 12px; color: var(--text-secondary); margin-top: 6px; text-decoration: underline; text-underline-offset: 2px; }
.btn { background: var(--surface-2); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; padding: 6px 12px; font: inherit; cursor: pointer; }
.btn:hover { border-color: var(--text-muted); }
table.data tr.total td { font-weight: 700; }
.share { display: inline-block; height: 8px; background: var(--series-1); border-radius: 0 3px 3px 0; vertical-align: middle; margin-left: 8px; }

table.sortable th[data-sort] { cursor: pointer; user-select: none; }
table.sortable th[data-sort]:hover { color: var(--text-primary); }
table.sortable th .dir { color: var(--otg-red); margin-left: 4px; }
table.data tr.muted td { color: var(--text-muted); }
details.review { margin-top: 12px; }
details.review summary { cursor: pointer; color: var(--text-secondary); font-weight: 600; }
details.review summary b { color: var(--warning); }
details.review table { margin-top: 8px; }
table.data td.wrap { white-space: normal; min-width: 220px; }

/* What if */
.whatif { background: linear-gradient(180deg, rgba(216, 8, 9, .06), transparent 120px), var(--surface-1); border-color: #3a2a2a; }
.whatif .eyebrow { color: var(--otg-red); font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.whatif .lead { color: var(--text-secondary); margin: 4px 0 14px; max-width: 75ch; }
.wi-controls { display: flex; flex-wrap: wrap; gap: 14px 24px; align-items: center; margin-bottom: 16px; }
.wi-controls label { display: flex; align-items: center; gap: 8px; color: var(--text-secondary); }
.wi-controls input[type=number] { width: 80px; background: var(--surface-2); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; font: inherit; }
.wi-controls input[type=range] { width: 220px; accent-color: var(--otg-red); }
.wi-controls output { font-variant-numeric: tabular-nums; color: var(--text-primary); min-width: 44px; display: inline-block; }
.wi-results { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 12px; }
.wi-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px 14px; min-width: 0; }
.wi-card .kpi-value { font-size: 32px; }
.wi-card .alt { font-size: 13px; color: var(--text-secondary); margin-top: 2px; }
.formula { font-size: 12px; color: var(--text-muted); margin-top: 6px; line-height: 1.4; }
.formula b { color: var(--text-secondary); font-weight: 600; }
.wi-note { font-size: 12px; color: var(--text-muted); margin-top: 12px; max-width: 90ch; }

/* Attendance table */
.panel-controls input[type=search] { background: var(--surface-2); color: var(--text-primary); border: 1px solid var(--border); border-radius: 6px; padding: 6px 8px; font: inherit; width: 160px; }
.att-risk { margin: 0 0 10px; color: var(--text-secondary); }
.att-risk b { color: var(--text-primary); }
.legend { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 10px; font-size: 12px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 2px 8px; border-radius: 999px; color: var(--text-secondary); }
.chip::before { content: ""; width: 10px; height: 10px; border-radius: 3px; }
.chip.ok::before { background: var(--cell-ok); }
.chip.low::before { background: var(--cell-low); }
.chip.pause::before { background: var(--cell-pause); }
.chip.now::before { background: transparent; border: 1px dashed var(--text-muted); }
.att-wrap { max-height: 560px; overflow: auto; }
table.att th { position: sticky; top: 0; background: var(--surface-1); z-index: 1; }
table.att td.c { text-align: center; padding: 6px 4px; min-width: 52px; font-weight: 600; }
table.att td.ok { background: var(--cell-ok); }
table.att td.low { background: var(--cell-low); }
table.att td.pause { background: var(--cell-pause); color: var(--text-secondary); }
table.att td.now { border: 1px dashed var(--border); color: var(--text-secondary); font-weight: 400; }
table.att td.none { color: var(--text-muted); font-weight: 400; }
table.att td.reds { font-weight: 700; }
table.att .sub { display: block; font-size: 11px; font-weight: 400; color: var(--text-muted); }

@media (max-width: 900px) {
  .home-grid { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr 1fr; }
  .two-col { grid-template-columns: 1fr; }
  .range-label { margin-left: 0; width: 100%; }
}
@media (max-width: 560px) {
  .topbar, .filters, .tabs, main { padding-left: 16px; padding-right: 16px; }
  .hero { grid-template-columns: 1fr; }
  .tiles { grid-template-columns: 1fr; }
  .wi-controls input[type=range] { width: 160px; }
  .ltv-grid { grid-template-columns: 1fr; }
  .bar-row { grid-template-columns: 110px 1fr 50px; }
}

/* InBody progress (Retention) */
table.ib th { position: sticky; top: 0; background: var(--surface-1); z-index: 1; }
table.ib td.c { text-align: center; white-space: nowrap; }
table.ib td.ok { background: var(--cell-ok); }
table.ib td.low { background: var(--cell-low); }
table.ib td.now { border: 1px dashed var(--border); color: var(--text-secondary); }
table.ib td.num { text-align: right; white-space: nowrap; }
table.ib .sub { display: block; font-size: 11px; color: var(--text-muted); }
table.ib .chg { font-weight: 600; }
table.ib .chg.better { color: var(--good); }
table.ib .chg.worse { color: var(--critical); }

/* Session usage, week by week (Retention) */
table.usage-wk th:first-child, table.usage-wk td:first-child { position: sticky; left: 0; background: var(--surface-1); z-index: 1; }
table.usage-wk th.tot, table.usage-wk td.tot { border-left: 2px solid var(--border); font-weight: 700; }
table.usage-wk td .sub { display: block; font-size: 11px; font-weight: 400; color: var(--text-muted); }
table.usage-wk td .sub.better { color: var(--good); }
table.usage-wk td .sub.worse { color: var(--critical); }
table.usage-wk tr.rate td { font-weight: 700; }
table.usage-wk .now { color: var(--text-muted); font-style: italic; }
table.usage-wk tr.group td { text-align: left; font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-secondary); background: var(--surface-2); position: static; }

/* Card backs: "How it's calculated" */
.flip { perspective: 900px; position: relative; }
.flip.turning { animation: card-turn .28s ease-in-out; }
@keyframes card-turn { 0% { transform: rotateY(0); } 50% { transform: rotateY(90deg); } 100% { transform: rotateY(0); } }
@media (prefers-reduced-motion: reduce) { .flip.turning { animation: none; } }
.how-btn { display: inline-flex; align-items: center; gap: 5px; margin-top: 8px; padding: 3px 9px; font: inherit; font-size: 11.5px;
  color: var(--text-secondary); background: transparent; border: 1px solid var(--border); border-radius: 999px; cursor: pointer; }
.how-btn::before { content: "i"; display: inline-grid; place-items: center; width: 13px; height: 13px; border-radius: 50%;
  border: 1px solid currentColor; font-size: 9px; font-weight: 700; font-style: italic; font-family: Georgia, serif; }
.face.back .how-btn::before { content: "←"; border: 0; font-style: normal; font-family: inherit; font-size: 12px; }
.how-btn:hover { color: var(--text-primary); border-color: var(--text-muted); }
.how-btn:focus-visible { outline: 2px solid var(--otg-red); outline-offset: 2px; }
.flipped { cursor: default; }
.face.back { font-size: 12.5px; line-height: 1.45; color: var(--text-secondary); }
.face.back .kpi-label { color: var(--text-primary); font-weight: 600; margin-bottom: 4px; }
.face.back .how-h { margin-top: 8px; font-size: 10.5px; letter-spacing: .07em; text-transform: uppercase; color: var(--text-muted); }
.face.back p { margin: 2px 0 0; }
.tile .face.back { font-size: 12px; }

.muted-pct { color: var(--text-muted); font-size: 11.5px; margin-left: 4px; }
#tenureTable tr.group th { text-align: center; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--text-secondary); border-bottom: 1px solid var(--border); }
#tenureTable tr.group th:empty { border-bottom: 0; }