/* Maintenance Dashboard — Billing module */

:root {
  --md-status-billing-active: #16a34a;
  --md-status-billing-due: #d97706;
  --md-status-billing-expired: #dc2626;
  --md-status-billing-unknown: #6b7280;

  --md-badge-bg-billing-active: #dcfce7;
  --md-badge-bg-billing-due: #fef3c7;
  --md-badge-bg-billing-expired: #fee2e2;
  --md-badge-bg-billing-unknown: #f3f4f6;
}

/* ── Status badges ──────────────────────────────────────────────── */

.md-badge-billing-active {
  color: var(--md-status-billing-active);
  background: var(--md-badge-bg-billing-active);
}

.md-badge-billing-due {
  color: var(--md-status-billing-due);
  background: var(--md-badge-bg-billing-due);
}

.md-badge-billing-expired {
  color: var(--md-status-billing-expired);
  background: var(--md-badge-bg-billing-expired);
}

.md-badge-billing-unknown {
  color: var(--md-status-billing-unknown);
  background: var(--md-badge-bg-billing-unknown);
}

.md-badge-sm {
  padding: 1px 6px;
  font-size: 10px;
}

.md-plan-name {
  font-weight: 500;
}

.md-sd-section-title {
  margin: 20px 0 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--md-text-primary);
}

/* ── Toolbar ────────────────────────────────────────────────────── */

.md-toolbar-right {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
}

.md-chip-count {
  display: inline-block;
  margin-left: 6px;
  padding: 0 6px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  background: var(--md-border-light);
  color: var(--md-text-secondary);
}

.md-chip.active .md-chip-count {
  background: var(--md-surface);
  color: var(--md-accent);
}

.md-muted {
  color: var(--md-text-muted);
}

/* ── Table ──────────────────────────────────────────────────────── */

.md-billing-table td {
  vertical-align: top;
}

.md-billing-actions {
  white-space: nowrap;
  text-align: right;
}

.md-billing-actions .md-btn {
  margin-left: 4px;
}

.md-billing-empty-notice {
  margin-bottom: 16px;
  border-left: 3px solid var(--md-status-billing-due);
}

/* ── Expandable detail row ──────────────────────────────────────── */

.md-billing-detail > td {
  background: var(--md-bg);
  padding: 0;
}

.md-billing-detail-inner {
  padding: 16px 20px;
}

.md-billing-panel-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--md-border);
}

.md-billing-panel-head strong {
  font-size: 14px;
}

.md-billing-panel-head .md-btn {
  margin-left: auto;
}

.md-billing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
}

.md-billing-panel-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 16px;
}

.md-field-hint {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  line-height: 1.4;
  color: var(--md-text-muted);
}

.md-form-error {
  margin-top: 12px;
  padding: 8px 12px;
  border-radius: var(--md-radius-sm);
  font-size: 13px;
  color: var(--md-danger-text);
  background: var(--md-danger-bg);
}

/* ── Nested payment history table ───────────────────────────────── */

.md-subtable {
  background: var(--md-surface);
  border: 1px solid var(--md-border);
  border-radius: var(--md-radius-sm);
}

.md-subtable th,
.md-subtable td {
  font-size: 12px;
  padding: 8px 10px;
}

.md-subtable td:last-child {
  text-align: right;
}