/* ══════════════════════════════════════════
   VARIANCE CALCULATOR
   ══════════════════════════════════════════ */

/* Deviation Table */
.va-dev-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 8px;
}

.va-dev-table th {
  padding: 10px 8px;
  text-align: left;
  font-weight: 700;
  color: var(--subtext);
  text-transform: uppercase;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  border-bottom: 2px solid var(--border);
}

.va-dev-table td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

.va-dev-table tbody tr:hover {
  background: var(--bg);
}

.va-dev-table .va-dev-summary td {
  background: var(--card);
  font-weight: 600;
  border-top: 2px solid var(--primary);
  border-bottom: none;
  color: var(--text);
}

.va-dev-table .va-dev-summary td:first-child {
  text-align: right;
  padding-right: 12px;
}

/* Section Styles */
.va-section {
  margin-top: 20px;
}

.va-section-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.va-section-sub {
  font-weight: 400;
  font-size: 0.78rem;
  color: var(--subtext);
}

/* Step-by-step results in formula-box */
#vaSteps {
  margin-top: 18px;
  line-height: 1.7;
}

/* Copy button row */
.copy-btn-row {
  display: flex;
  gap: 4px;
  margin-top: 8px;
}

.copy-btn-sm {
  padding: 3px 8px;
  font-size: 0.7rem;
}

/* Responsive table */
@media (max-width: 600px) {
  .va-dev-table {
    font-size: 0.75rem;
  }
  .va-dev-table th,
  .va-dev-table td {
    padding: 5px 4px;
  }
}