/* ============================================================
   FinToolbox — ROI Calculator (tool-specific)
   Global/shared styles (.card .fld .input .bk .btn .tag …) live in
   /css/styles.css. The tab pattern is the same recipe used by the
   Margin tool, namespaced as .r-* so the two tools stay independent.
   ============================================================ */

/* The hidden attribute must beat any display:flex/grid on conditional reveal
   targets (panels, annualised row, etc). */
.roi-tool [hidden] { display: none !important; }

/* Visually-hidden heading used to bridge the H1 → H3 outline (one per panel).
   Visible to crawlers and screen readers; absent from layout / pointer events. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- Tab strip ---------- */
.r-tabs {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--line);
  margin-bottom: 18px;
}
.r-tab {
  appearance: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-3);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  border-radius: 6px 6px 0 0;
}
.r-tab:hover { color: var(--text); background: var(--card-hi); }
.r-tab.on { color: var(--text); border-bottom-color: var(--green); }
.r-tab:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }

.r-panel { display: none; }
.r-panel.on { display: block; }

/* ---------- Input grid (each tab body) ---------- */
.r-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 560px) { .r-form { grid-template-columns: 1fr; } }

/* The optional "Years" field spans the full row for clarity. */
.r-form .fld.r-full { grid-column: 1 / -1; }

/* ---------- Output (re-use .bk from styles.css) ---------- */
.r-out h3 { margin: 0 0 10px; font-size: 14px; font-weight: 700; }
.r-out .bk .v,
.r-out .bk .tag { padding-right: 10px; }

/* Helper note below the years input. */
.r-hint {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  color: var(--text-3);
  line-height: 1.4;
}

/* ---------- Bottom disclaimer card ---------- */
.r-disclaimer {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 16px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--yellow) 8%, var(--card));
  border: 1px solid color-mix(in srgb, var(--yellow) 30%, transparent);
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.55;
}
.r-disclaimer .icon { flex: 0 0 auto; font-size: 18px; line-height: 1; }
.r-disclaimer b { color: var(--text); font-weight: 700; }

/* ---------- Cross-link card pair ---------- */
.r-cross {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 560px) { .r-cross { grid-template-columns: 1fr; } }
.r-cross .card { padding: 14px 16px; }
.r-cross h4 { margin: 0 0 4px; font-size: 13px; }
.r-cross p { margin: 0 0 8px; font-size: 12.5px; color: var(--text-2); line-height: 1.55; }