/* roi.css — §R1 Exposure Calculator, scoped to #roi (+ page noscript/cta blocks).
   House rules: paper ground, hairline 1px borders, no shadows, no gold —
   these results are the reader's own arithmetic, not verification moments. */

#roi .roi-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 28px;
  align-items: start;
  margin-top: 8px;
}

/* ---- form ---------------------------------------------------------------- */
#roi .roi-form__head,
#roi .roi-results__head {
  display: block;
  margin: 0 0 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--hairline);
}

#roi .roi-field { margin-bottom: 22px; }
#roi .roi-field:last-child { margin-bottom: 0; }

#roi .roi-label {
  display: block;
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 8px;
}

#roi .roi-input {
  display: block;
  width: 100%;
  font-family: var(--ff-mono);
  font-size: 1rem;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  appearance: textfield;
  -moz-appearance: textfield;
}
#roi .roi-input::-webkit-outer-spin-button,
#roi .roi-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
#roi .roi-input::placeholder { color: var(--ink-soft); opacity: 0.6; }
#roi .roi-input:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }

#roi .roi-hint {
  margin: 7px 0 0;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

/* reference chips — third-party projections, explicitly NOT defaults */
#roi .roi-refs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 9px;
}
#roi .roi-refchip {
  display: inline-block;
  font-family: var(--ff-mono);
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  line-height: 1.45;
  color: var(--ink-soft);
  border: 1px dashed var(--hairline);
  border-radius: 999px;
  padding: 4px 11px;
  background: transparent;
}

/* ---- results ------------------------------------------------------------- */
#roi .roi-results { position: sticky; top: 84px; }

#roi .roi-row {
  display: grid;
  gap: 3px;
  padding: 16px 0;
  border-bottom: 1px solid var(--hairline);
}
/* the display:grid above would defeat the [hidden] UA rule — restate it */
#roi .roi-row[hidden] { display: none; }
#roi .roi-row:last-of-type { border-bottom: 0; }

#roi .roi-row__name {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--ink);
}
#roi .roi-row__val {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--teal-deep);
  font-variant-numeric: tabular-nums;
}
#roi .roi-row__formula {
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
}
#roi .roi-row__cap {
  font-family: var(--ff-mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-top: 3px;
}

#roi .roi-results__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--hairline);
  font-size: 0.83rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---- noscript + closing CTA ---------------------------------------------- */
#roi .roi-noscript { margin-top: 28px; }
#roi .roi-noscript ul { margin: 10px 0; padding-left: 20px; }
#roi .roi-noscript li { margin-bottom: 7px; line-height: 1.55; }
#roi .roi-noscript p { color: var(--ink-soft); font-size: 0.92rem; }

#roi .roi-cta {
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}
#roi .roi-cta__line {
  margin: 0;
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1.12rem;
  color: var(--ink);
}

/* ---- narrow -------------------------------------------------------------- */
@media (max-width: 760px) {
  #roi .roi-grid { grid-template-columns: 1fr; gap: 20px; }
  #roi .roi-results { position: static; }
  #roi .roi-row__val { font-size: 1.3rem; }
}