/* proof.css — blocos de prova: faixa de números com fonte (.kpi-strip) e cards de
 * tela empilhados (.stack). Tema claro por padrão; dentro de body.bt-site
 * (BeforeTHEM, CAASM) usa as cores escuras. */

/* ---------- faixa de números ---------- */
.kpi-strip { --k-bg: #0b1030; --k-line: rgba(54, 208, 234, 0.25); --k-num: #fff; --k-txt: #c3cbe4; --k-acc: #36d0ea; }
.bt-site .kpi-strip { --k-bg: rgba(255, 255, 255, 0.03); --k-line: var(--bt-line-strong, rgba(255, 255, 255, 0.12)); --k-num: #fff; --k-txt: var(--bt-text, #c9cbe0); --k-acc: var(--bt-accent, #4fedd2); }
.kpi-strip__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--sp-5); }
@media (max-width: 860px) { .kpi-strip__grid { grid-template-columns: 1fr; } }
.kpi-card {
  position: relative; overflow: hidden; padding: var(--sp-6); border-radius: 16px; background: var(--k-bg); border: 1px solid var(--k-line);
}
.kpi-card::after { /* canto em linha, decorativo */
  content: ""; position: absolute; right: -28px; top: -28px; width: 110px; height: 110px; border-radius: 50%;
  border: 1px solid var(--k-line); box-shadow: 0 0 0 14px transparent, 0 0 0 15px var(--k-line);
}
.kpi-card b { display: block; font-family: var(--font-display); font-size: clamp(2.4rem, 3vw + 1rem, 3.4rem); line-height: 1; color: var(--k-num); letter-spacing: -0.02em; }
.kpi-card b small { font-size: 0.5em; color: var(--k-acc); margin-left: 2px; }
.kpi-card p { margin: var(--sp-3) 0 0; color: var(--k-txt); font-size: var(--fs-sm); line-height: 1.5; max-width: 34ch; }
.kpi-strip__src { margin-top: var(--sp-4); font-size: var(--fs-xs); color: var(--text-muted); }
.bt-site .kpi-strip__src { color: var(--bt-muted, #8d90aa); }
.kpi-strip__src a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }

/* ---------- cards de tela empilhados ---------- */
.stack { position: relative; min-height: 420px; }
.stack__card {
  position: absolute; width: 78%; border-radius: 14px; background: #10111d; border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5); padding: 18px 20px; color: #c9cbe0; font-size: 13px;
}
.stack__card--back { right: 0; top: 0; opacity: 0.92; }
.stack__card--front { left: 0; bottom: 0; }
.stack__head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 14px; }
.stack__head strong { color: #fff; font-size: 14px; }
.stack__head span { font-family: var(--font-mono); font-size: 10.5px; color: #8d90aa; }
.stack__donut { display: grid; grid-template-columns: 140px 1fr; gap: 18px; align-items: center; }
.donut {
  width: 140px; height: 140px; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(var(--d1) 0 var(--p1), var(--d2) 0 var(--p2), var(--d3) 0 var(--p3), var(--d4) 0 100%);
  -webkit-mask: radial-gradient(circle, transparent 54%, #000 55%); mask: radial-gradient(circle, transparent 54%, #000 55%);
}
.donut-wrap { position: relative; width: 140px; height: 140px; }
.donut-wrap__center { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.donut-wrap__center b { display: block; font-family: var(--font-display); font-size: 26px; color: #fff; line-height: 1; }
.donut-wrap__center small { font-size: 10px; color: #8d90aa; text-transform: uppercase; letter-spacing: .08em; }
.stack__legend { display: grid; gap: 8px; }
.stack__legend div { display: grid; grid-template-columns: 12px 1fr auto auto; gap: 8px; align-items: center; }
.stack__legend i { width: 10px; height: 10px; border-radius: 3px; }
.stack__legend em { font-style: normal; color: #8d90aa; font-variant-numeric: tabular-nums; }
.stack__legend b { color: #fff; font-variant-numeric: tabular-nums; min-width: 44px; text-align: right; }
.stack__list { display: grid; gap: 8px; }
.stack__list div { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }
.stack__list code { font-family: var(--font-mono); font-size: 12px; color: #e6e2ff; }
.stack__list small { display: block; color: #8d90aa; font-size: 11px; }
.stack__bar { height: 6px; border-radius: 3px; background: rgba(255, 255, 255, 0.07); grid-column: 1 / -1; overflow: hidden; }
.stack__bar span { display: block; height: 100%; border-radius: 3px; background: var(--bar, #8b7bff); }
.stack__list b { color: #fff; font-variant-numeric: tabular-nums; }
.stack__note { position: absolute; left: 0; bottom: -26px; font-family: var(--font-mono); font-size: 10.5px; color: #8d90aa; }
@media (max-width: 860px) {
  .stack { min-height: 0; display: grid; gap: 14px; }
  .stack__card { position: static; width: 100%; }
  .stack__note { position: static; }
}