/* TCC Hub. Calm, warm, unhurried: a boutique gym's back office, not a trading floor. */
:root {
  color-scheme: light;
  --bg: #f6f3ee;
  --surface: #fdfcfa;
  --surface-2: #f1ede6;
  --line: #e4ded4;
  --ink: #1c1a17;
  --ink-2: #57524a;
  --ink-3: #8a8378;
  --accent: #2f5d50;        /* deep sage: TCC's calm confidence */
  --accent-ink: #ffffff;
  --accent-soft: #e3ece8;
  --good: #2e7d4f; --warn: #a86a00; --bad: #b3412f;
  --good-soft: #e4f1e8; --warn-soft: #f8edd7; --bad-soft: #f7e3df;
  /* data: reference categorical palette (validated), slot order fixed */
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100;
  --grid: #ebe6dd;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(28, 26, 23, .04), 0 4px 16px rgba(28, 26, 23, .04);
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #12110f; --surface: #1a1917; --surface-2: #22201d; --line: #2f2c28;
    --ink: #f1eee8; --ink-2: #c3bdb2; --ink-3: #8f887d;
    --accent: #8cc2b0; --accent-ink: #10201b; --accent-soft: #1f2e29;
    --good: #6cc48f; --warn: #e0a640; --bad: #e88472;
    --good-soft: #1d2d23; --warn-soft: #30271a; --bad-soft: #33201c;
    --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500;
    --grid: #2a2825;
    --shadow: none;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #12110f; --surface: #1a1917; --surface-2: #22201d; --line: #2f2c28;
  --ink: #f1eee8; --ink-2: #c3bdb2; --ink-3: #8f887d;
  --accent: #8cc2b0; --accent-ink: #10201b; --accent-soft: #1f2e29;
  --good: #6cc48f; --warn: #e0a640; --bad: #e88472;
  --good-soft: #1d2d23; --warn-soft: #30271a; --bad-soft: #33201c;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500;
  --grid: #2a2825;
  --shadow: none;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 14px/1.5 var(--sans); -webkit-font-smoothing: antialiased; }
a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 2px; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 6px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
h1, h2, h3 { font-family: var(--serif); font-weight: 500; letter-spacing: -.01em; margin: 0; }
h1 { font-size: 28px; line-height: 1.2; }
h2 { font-size: 19px; }
h3 { font-size: 15px; font-family: var(--sans); font-weight: 600; letter-spacing: 0; }
.muted { color: var(--ink-3); }
.num { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- shell */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.side { background: var(--surface); border-right: 1px solid var(--line); padding: 20px 14px; position: sticky; top: 0; height: 100vh; overflow-y: auto; }
.brand { display: flex; align-items: baseline; gap: 8px; padding: 0 10px 18px; }
.brand b { font-family: var(--serif); font-size: 20px; font-weight: 500; }
.brand span { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.nav-group { margin: 14px 0 4px; padding: 0 10px; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-3); }
.nav a { display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: 10px; color: var(--ink-2); text-decoration: none; }
.nav a:hover { background: var(--surface-2); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--accent-soft); color: var(--ink); font-weight: 600; }
.nav a .dot { width: 6px; height: 6px; border-radius: 50%; background: currentColor; opacity: .35; }
.nav a[aria-current="page"] .dot { background: var(--accent); opacity: 1; }
.side-foot { margin-top: 24px; padding: 12px 10px 0; border-top: 1px solid var(--line); font-size: 12px; color: var(--ink-3); }
.side-foot button { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; }

.main { min-width: 0; padding: 22px 28px 60px; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 22px; }
.topbar .title { flex: 1 1 260px; min-width: 0; }
.topbar .title p { margin: 4px 0 0; color: var(--ink-3); font-size: 13px; }
.controls { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.seg { display: inline-flex; background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.seg button { border: 0; background: none; padding: 5px 12px; border-radius: 999px; cursor: pointer; color: var(--ink-2); white-space: nowrap; }
.seg button[aria-pressed="true"] { background: var(--ink); color: var(--surface); }
.select, .input { background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 6px 12px; }
.input { border-radius: 10px; }
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 11px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; }
.badge.demo { background: var(--warn-soft); color: var(--warn); }
.badge.dry { background: var(--accent-soft); color: var(--accent); }
.banner { background: var(--warn-soft); color: var(--ink); border-radius: var(--radius); padding: 10px 14px; margin: -8px 0 18px; font-size: 13px; }
.mobile-nav { display: none; }

/* ---------------------------------------------------------------- cards */
.grid { display: grid; gap: 16px; }
.kpis { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.two { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); min-width: 0; }
.card + .card, .grid + .card, .card + .grid, .grid + .grid { margin-top: 16px; }
.grid > .card { margin-top: 0; }
.card-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.card-head p { margin: 2px 0 0; color: var(--ink-3); font-size: 12px; }

.kpi { display: flex; flex-direction: column; gap: 4px; }
.kpi .label { display: flex; align-items: center; gap: 6px; color: var(--ink-2); font-size: 13px; }
.kpi .value { font-family: var(--serif); font-size: 30px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.kpi .delta { font-size: 12px; color: var(--ink-3); }
.kpi .delta .up { color: var(--good); } .kpi .delta .down { color: var(--bad); }

/* definitions on hover/focus */
.info { position: relative; display: inline-flex; width: 16px; height: 16px; border-radius: 50%; border: 1px solid var(--line); color: var(--ink-3); font: 600 10px/14px var(--sans); justify-content: center; cursor: help; background: var(--surface); flex: none; }
.info .tip { display: none; position: absolute; z-index: 30; left: 50%; top: 22px; transform: translateX(-50%); width: 260px; padding: 10px 12px; border-radius: 10px; background: var(--ink); color: var(--surface); font: 400 12px/1.45 var(--sans); text-align: left; box-shadow: 0 8px 24px rgba(0,0,0,.18); }
.info:hover .tip, .info:focus .tip, .info:focus-within .tip { display: block; }

/* ---------------------------------------------------------------- charts */
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: auto; overflow: visible; }
.chart .gridline { stroke: var(--grid); stroke-width: 1; }
.chart .axis { fill: var(--ink-3); font-size: 11px; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { opacity: .1; }
.chart .end { stroke: var(--surface); stroke-width: 2; }
.chart .endlabel { fill: var(--ink); font-size: 12px; font-weight: 600; }
.chart .cross { stroke: var(--ink-3); stroke-width: 1; }
.chart .hit { fill: transparent; }
.tooltip { position: absolute; pointer-events: none; z-index: 20; background: var(--ink); color: var(--surface); padding: 7px 10px; border-radius: 8px; font-size: 12px; white-space: nowrap; transform: translate(-50%, -110%); }
.tooltip b { font-weight: 600; }
details.table-view { margin-top: 10px; font-size: 12px; }
details.table-view summary { cursor: pointer; color: var(--ink-3); }

.bars { display: flex; flex-direction: column; gap: 8px; }
.bar-row { display: grid; grid-template-columns: minmax(90px, 34%) 1fr; gap: 10px; align-items: center; font-size: 13px; }
.bar-row .name { color: var(--ink-2); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-track { display: flex; align-items: center; gap: 8px; min-width: 0; }
.bar-fill { height: 14px; border-radius: 0 4px 4px 0; background: var(--s1); min-width: 2px; }
.bar-val { color: var(--ink); font-variant-numeric: tabular-nums; white-space: nowrap; font-size: 12px; }
.key { display: inline-flex; align-items: center; gap: 6px; margin-right: 14px; font-size: 12px; color: var(--ink-2); }
.key i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* ---------------------------------------------------------------- tables */
.table-wrap { overflow-x: auto; margin: 0 -4px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-weight: 600; color: var(--ink-3); font-size: 12px; white-space: nowrap; }
th button { all: unset; cursor: pointer; }
td.r, th.r { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 0; }
.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; background: var(--surface-2); color: var(--ink-2); white-space: nowrap; }
.pill.good { background: var(--good-soft); color: var(--good); }
.pill.warn { background: var(--warn-soft); color: var(--warn); }
.pill.bad { background: var(--bad-soft); color: var(--bad); }
.pill.accent { background: var(--accent-soft); color: var(--accent); }
.progress { display: inline-flex; gap: 3px; vertical-align: middle; }
.progress i { width: 9px; height: 9px; border-radius: 3px; background: var(--surface-2); border: 1px solid var(--line); }
.progress i.on { background: var(--accent); border-color: var(--accent); }
.ghl { white-space: nowrap; font-size: 12px; }
.empty { color: var(--ink-3); padding: 18px 4px; text-align: center; }

.tabs { display: flex; gap: 6px; margin-bottom: 12px; flex-wrap: wrap; }
.tabs button { border: 1px solid var(--line); background: var(--surface); padding: 5px 12px; border-radius: 999px; cursor: pointer; color: var(--ink-2); }
.tabs button[aria-selected="true"] { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.tabs .count { opacity: .7; margin-left: 4px; }

.cohort td { text-align: center; font-variant-numeric: tabular-nums; border-bottom: 2px solid var(--surface); border-right: 2px solid var(--surface); padding: 6px 4px; font-size: 12px; }
.cohort td.l { text-align: left; color: var(--ink-2); background: none; }

.tree td:first-child { white-space: nowrap; }
.tree .lvl1 td:first-child { padding-left: 22px; }
.tree .lvl2 td:first-child { padding-left: 40px; color: var(--ink-2); }
.tree button.tw { all: unset; cursor: pointer; width: 16px; display: inline-block; color: var(--ink-3); }

.log td { font-size: 12px; }
.log .act { max-width: 460px; }
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }

/* ---------------------------------------------------------------- sign-in */
.login { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; }
.login-card { width: min(420px, 100%); background: var(--surface); border: 1px solid var(--line); border-radius: 20px; padding: 28px; box-shadow: var(--shadow); }
.login-card h1 { margin-bottom: 6px; }
.login-card p { color: var(--ink-2); margin: 0 0 18px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--line); background: var(--surface); padding: 9px 14px; border-radius: 12px; cursor: pointer; text-decoration: none; color: var(--ink); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.block { width: 100%; }
.stack { display: flex; flex-direction: column; gap: 10px; }
.or { display: flex; align-items: center; gap: 10px; color: var(--ink-3); font-size: 12px; margin: 18px 0; }
.or::before, .or::after { content: ""; flex: 1; height: 1px; background: var(--line); }
label.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-2); }
.err { color: var(--bad); font-size: 13px; min-height: 1.2em; }
.handoff { display: grid; place-items: center; min-height: 100vh; padding: 16px; }
.handoff-card { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 24px; max-width: 420px; }

/* ---------------------------------------------------------------- small screens */
@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { display: none; }
  .mobile-nav { display: block; margin-bottom: 14px; }
  .mobile-nav select { width: 100%; border-radius: 12px; padding: 9px 12px; }
  .main { padding: 16px 16px 48px; }
  .two { grid-template-columns: 1fr; }
  .seg { max-width: 100%; overflow-x: auto; }
  h1 { font-size: 24px; }
  .kpi .value { font-size: 24px; }
  .card { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
@media (forced-colors: active) { .bar-fill, .progress i.on { background: CanvasText; } }