/* ============================================================
   IDS — Internet Data Solutions
   Report design system. Tokens from the dataviz validated palette.
   ============================================================ */
:root {
  /* surfaces / ink */
  --plane:        #f4f5f3;
  --surface-1:    #ffffff;
  --surface-2:    #fbfbfa;
  --ink:          #0b0b0b;
  --ink-2:        #52514e;
  --muted:        #898781;
  --hair:         #e4e3dd;
  --hair-strong:  #cfcec7;
  --ring:         rgba(11,11,11,0.08);

  /* brand */
  --brand:        #1c5cab;
  --brand-2:      #2a78d6;
  --accent:       #1baf7a;

  /* categorical (CVD-validated default theme) */
  --s1:#2a78d6; --s2:#1baf7a; --s3:#eda100; --s4:#008300;
  --s5:#4a3aa7; --s6:#e34948; --s7:#e87ba4; --s8:#eb6834;

  /* status */
  --good:#0ca30c; --warn:#eda100; --serious:#ec835a; --crit:#d03b3b;

  --radius: 14px;
  --radius-sm: 9px;
  --shadow: 0 1px 2px rgba(11,11,11,.04), 0 6px 24px rgba(11,11,11,.05);
  --maxw: 1080px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --plane:#0d0d0d; --surface-1:#161615; --surface-2:#1a1a19;
    --ink:#ffffff; --ink-2:#c3c2b7; --muted:#8f8e88;
    --hair:#2a2a28; --hair-strong:#38383500; --ring:rgba(255,255,255,0.09);
    --brand:#3987e5; --brand-2:#5598e7; --accent:#199e70;
    --s1:#3987e5; --s2:#199e70; --s3:#c98500; --s4:#008300;
    --s5:#9085e9; --s6:#e66767; --s7:#d55181; --s8:#d95926;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 8px 30px rgba(0,0,0,.45);
    --hair-strong:#38383a;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--plane); color: var(--ink);
  font-family: var(--font); line-height: 1.5;
  font-feature-settings: "kern" 1;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }

/* ---------- layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 22px; }
.section { margin: 42px 0; }
.eyebrow { font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); font-weight: 650; }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--plane) 86%, transparent);
  backdrop-filter: saturate(1.4) blur(10px); border-bottom: 1px solid var(--hair); }
.topbar .wrap { display: flex; align-items: center; gap: 18px; height: 58px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 750; letter-spacing: -.01em; }
.brand .mark { width: 26px; height: 26px; border-radius: 7px;
  background: linear-gradient(135deg, var(--brand-2), var(--brand)); display: grid; place-items: center;
  color: #fff; font-size: 13px; font-weight: 800; }
.brand small { color: var(--muted); font-weight: 550; letter-spacing: 0; }
.nav { margin-left: auto; display: flex; gap: 6px; }
.nav a { text-decoration: none; font-size: 14px; font-weight: 600; color: var(--ink-2);
  padding: 7px 12px; border-radius: 999px; border: 1px solid transparent; }
.nav a:hover { background: var(--surface-2); border-color: var(--hair); }
.nav a.active { color: var(--ink); background: var(--surface-1); border-color: var(--hair-strong); box-shadow: var(--shadow); }

/* ---------- hero ---------- */
.hero { padding: 46px 0 8px; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.04; letter-spacing: -.025em; margin: 12px 0 10px; }
.hero .lede { font-size: 18px; color: var(--ink-2); max-width: 60ch; margin: 0; }
.hero .period { display: inline-flex; align-items: center; gap: 8px; font-weight: 650;
  color: var(--brand); background: color-mix(in srgb, var(--brand) 12%, transparent);
  padding: 5px 12px; border-radius: 999px; font-size: 13px; }

/* ---------- KPI tiles ---------- */
.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 26px; }
.kpi { background: var(--surface-1); border: 1px solid var(--hair); border-radius: var(--radius);
  padding: 18px 18px 16px; box-shadow: var(--shadow); }
.kpi .label { font-size: 12.5px; color: var(--muted); font-weight: 600; }
.kpi .value { font-size: 33px; font-weight: 760; letter-spacing: -.02em; margin-top: 8px; line-height: 1; }
.kpi .value small { font-size: 16px; font-weight: 600; color: var(--ink-2); letter-spacing: 0; }
.kpi .delta { margin-top: 9px; font-size: 13px; font-weight: 650; display: inline-flex; gap: 5px; align-items: center; }
.kpi .delta.up { color: var(--good); }
.kpi .delta.down { color: var(--crit); }
.kpi .delta.flat { color: var(--muted); }

/* ---------- chart cards ---------- */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.card { background: var(--surface-1); border: 1px solid var(--hair); border-radius: var(--radius);
  padding: 20px; box-shadow: var(--shadow); }
.card.full { grid-column: 1 / -1; }
.card h3 { margin: 0 0 3px; font-size: 17px; letter-spacing: -.01em; }
.card .take { margin: 0 0 16px; font-size: 14px; color: var(--ink-2); }
.card .take b { color: var(--ink); font-weight: 700; }

/* ---------- svg chart bits ---------- */
.chart { width: 100%; overflow: visible; }
.chart text { font-family: var(--font); fill: var(--ink-2); }
.bar-row .track { fill: color-mix(in srgb, var(--muted) 12%, transparent); }
.bar-row .val { fill: var(--ink); font-weight: 700; font-variant-numeric: tabular-nums; }
.bar-row .name { fill: var(--ink-2); font-weight: 600; }
.axislab { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 14px; }
.legend .item { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; color: var(--ink-2); }
.legend .sw { width: 11px; height: 11px; border-radius: 3px; box-shadow: 0 0 0 2px var(--surface-1) inset; }
.donut-center .big { font-size: 26px; font-weight: 770; fill: var(--ink); }
.donut-center .sub { font-size: 11px; fill: var(--muted); font-weight: 600; }

/* tooltip */
.tt { position: fixed; z-index: 60; pointer-events: none; opacity: 0; transform: translateY(-4px);
  transition: opacity .12s; background: var(--ink); color: var(--plane);
  padding: 7px 10px; border-radius: 8px; font-size: 12.5px; font-weight: 600; box-shadow: var(--shadow);
  white-space: nowrap; }
.tt .k { opacity: .7; font-weight: 500; }
.seg, .bar-fill { cursor: default; transition: opacity .12s; }
.dim { opacity: .32; }

/* ---------- landing cards ---------- */
.reports { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 26px; }
.rcard { display: block; text-decoration: none; background: var(--surface-1); border: 1px solid var(--hair);
  border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); transition: transform .12s, border-color .12s; }
.rcard:hover { transform: translateY(-3px); border-color: var(--hair-strong); }
.rcard .month { font-size: 24px; font-weight: 750; letter-spacing: -.02em; }
.rcard .sub { color: var(--muted); font-size: 13.5px; margin-top: 2px; }
.rcard .mini { display: flex; gap: 20px; margin-top: 20px; }
.rcard .mini div { font-size: 12px; color: var(--muted); }
.rcard .mini b { display: block; font-size: 20px; color: var(--ink); font-weight: 720; letter-spacing: -.01em; }
.rcard .go { margin-top: 20px; color: var(--brand); font-weight: 650; font-size: 14px; }

/* ---------- footer ---------- */
.foot { border-top: 1px solid var(--hair); margin-top: 56px; padding: 26px 0 60px; color: var(--muted); font-size: 13px; }
.foot b { color: var(--ink-2); }
.caveat { background: var(--surface-2); border: 1px solid var(--hair); border-left: 3px solid var(--warn);
  border-radius: var(--radius-sm); padding: 13px 16px; font-size: 13.5px; color: var(--ink-2); margin-top: 16px; }

@media (max-width: 860px) {
  .kpis { grid-template-columns: 1fr 1fr; }
  .grid, .reports { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .brand small { display: none; }
  .kpis { grid-template-columns: 1fr; }
}