/* ── Statistics Calculator — tool-specific styles ────────────────────────────
   Global styles are inherited from /css/style.css.
   Colours reference CSS custom properties only — no hardcoded values.
   ─────────────────────────────────────────────────────────────────────────── */

.sc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card, 8px);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.sc-card__heading {
  font-size: 1.05rem;
  margin: 0;
}

.sc-input {
  min-height: 120px;
}

.sc-help {
  margin: -0.5rem 0 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.sc-error {
  margin: 0;
  color: var(--color-danger, #c0392b);
  font-size: 0.875rem;
}

.sc-mode {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.sc-mode__label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.sc-mode__buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.sc-mode-btn {
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-control, 8px);
  background: var(--bg-secondary, var(--bg-card));
  color: var(--text-primary);
  cursor: pointer;
  font-size: 0.875rem;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.sc-mode-btn:hover {
  border-color: var(--accent);
}

.sc-mode-btn.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--color-on-accent, #fff);
}