.card {
  padding: 20px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.4);
  background: linear-gradient(180deg, var(--card), var(--card2));
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.55);
}

.inspect-bar {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 12px;
}

.inspect-arithmetic-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(15, 23, 42, 0.75));
  color: var(--text, #e5e7eb);
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.7);
}

.inspect-arithmetic-btn:hover {
  border-color: rgba(250, 204, 21, 0.7);
  color: #facc15;
}

.mode-selector-wrap {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.mode-selector {
  display: inline-flex;
  padding: 4px;
  border-radius: 999px;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.mode-btn {
  flex: 1;
  border: none;
  border-radius: 999px;
  background: transparent;
  color: var(--muted, #9ca3af);
  font-size: 12px;
  padding: 6px 12px;
  cursor: pointer;
}

.mode-btn.active {
  background: var(--accentSoft);
  color: var(--text);
  font-weight: 600;
}

.mode-helper {
  font-size: 12px;
  color: var(--muted, #9ca3af);
}

.hidden {
  display: none !important;
}

.calc-grid {
  display: grid;
  gap: 18px;
}

@media (min-width: 900px) {
  .calc-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.2fr);
    align-items: flex-start;
  }
}

.panel {
  padding: 14px;
  border-radius: 14px;
  background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.85));
  border: 1px solid rgba(148, 163, 184, 0.4);
}

.section-title {
  font-size: 15px;
  margin: 0 0 10px;
}

.input-section {
  margin-top: 12px;
  padding-top: 8px;
  border-top: 1px dashed rgba(148, 163, 184, 0.4);
}

.section-label {
  font-size: 13px;
  margin: 0 0 6px;
  color: var(--muted, #9ca3af);
}

.field {
  margin-bottom: 10px;
}

.field label {
  display: block;
  font-size: 13px;
  margin-bottom: 4px;
}

.field input[type="text"],
.field select {
  width: 100%;
  padding: 8px 9px;
  border-radius: 8px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: rgba(15, 23, 42, 0.95);
  color: var(--text, #e5e7eb);
  font-size: 13px;
}

.field input[type="text"]:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
}

.help-text {
  font-size: 11px;
  color: var(--muted, #9ca3af);
  margin-top: 3px;
}

.error-text {
  font-size: 11px;
  color: #f97373;
  margin-top: 3px;
}

.is-invalid {
  border-color: #f97373 !important;
}

.toggle-field .toggle-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.toggle-field input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

.refund-toggle {
  display: inline-flex;
  margin-top: 4px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
}

.refund-btn {
  border: none;
  background: transparent;
  padding: 5px 10px;
  font-size: 12px;
  color: var(--muted, #9ca3af);
  cursor: pointer;
}

.refund-btn.active {
  background: var(--accentSoft);
  color: var(--text);
  border-radius: 999px;
  font-weight: 600;
}

.results-grid {
  display: grid;
  gap: 10px;
}

@media (min-width: 700px) {
  .results-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.result-card {
  padding: 10px 11px;
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(217, 180, 106, 0.10), rgba(217, 180, 106, 0.04));
  border: 1px solid rgba(217, 180, 106, 0.35);
}

.result-title {
  font-size: 13px;
  margin: 0 0 4px;
  color: var(--muted, #9ca3af);
}

.result-value {
  font-size: 18px;
  font-weight: 600;
  margin: 0 0 4px;
}

.result-note {
  font-size: 11px;
  color: var(--muted, #9ca3af);
  margin: 0;
}

.secondary-results {
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed rgba(148, 163, 184, 0.5);
}

.secondary-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
  font-size: 12px;
}

.secondary-row .label {
  color: var(--muted, #9ca3af);
}

.secondary-row .value {
  font-variant-numeric: tabular-nums;
}

.secondary-row.warning .value {
  color: #f97373;
}

.explainer-box {
  margin-top: 14px;
  padding: 10px 11px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(15, 23, 42, 0.95);
  font-size: 12px;
  color: var(--muted, #9ca3af);
}