/* ================================================================
   MATH TRAINING DASHBOARD
   Glassmorphic Design System — consistent with train.css
   ================================================================ */

/* ----- Panel layout ----- */
#mt-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  color: var(--dc-text, rgba(255, 255, 255, 0.85));
}

/* ----- Toolbar ----- */
.mt-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  background: var(--tc-glass-bg-sidebar, rgba(255, 255, 255, 0.04));
  border-bottom: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  flex-wrap: wrap;
  flex-shrink: 0;
}

.mt-toolbar label {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.4));
  text-transform: uppercase;
}

.mt-toolbar select {
  background: var(--tc-glass-bg-input, rgba(255, 255, 255, 0.05));
  border: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  color: var(--tc-text-secondary, rgba(255, 255, 255, 0.6));
  font-size: 11px;
  padding: 3px 6px;
  border-radius: var(--tc-radius-sm, 6px);
  cursor: pointer;
  outline: none;
  font-family: inherit;
  min-width: 80px;
}
.mt-toolbar select:focus {
  border-color: var(--tc-primary, #3B82F6);
}

.mt-toolbar-spacer { flex: 1; }

.mt-view-btn {
  background: var(--tc-glass-bg-input, rgba(255, 255, 255, 0.05));
  border: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.4));
  padding: 3px 8px;
  font-size: 11px;
  border-radius: var(--tc-radius-sm, 6px);
  cursor: pointer;
  font-family: inherit;
}
.mt-view-btn.active {
  background: var(--tc-primary, #3B82F6);
  color: #fff;
  border-color: var(--tc-primary, #3B82F6);
}

/* ----- Bulk Action Bar ----- */
.mt-bulk-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  background: rgba(59, 130, 246, 0.08);
  border-bottom: 1px solid rgba(59, 130, 246, 0.2);
  flex-shrink: 0;
  animation: mt-bulk-slide-in 0.2s ease;
}

@keyframes mt-bulk-slide-in {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

.mt-bulk-btn {
  background: transparent;
  border: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.12));
  color: var(--tc-text-secondary, rgba(255, 255, 255, 0.5));
  padding: 3px 8px;
  font-size: 10px;
  border-radius: var(--tc-radius-sm, 6px);
  cursor: pointer;
  font-family: inherit;
  text-transform: uppercase;
  letter-spacing: .03em;
}
.mt-bulk-btn:hover {
  background: rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.8);
}

.mt-bulk-btn-primary {
  background: var(--tc-primary, #3B82F6);
  border-color: var(--tc-primary, #3B82F6);
  color: #fff;
  font-weight: 600;
}
.mt-bulk-btn-primary:hover {
  background: #2563eb;
  color: #fff;
}

#mt-selection-count {
  font-size: 11px;
  font-weight: 600;
  color: var(--tc-primary, #3B82F6);
}

/* ----- Summary bar ----- */
#mt-summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  font-size: 11px;
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.4));
  background: rgba(255, 255, 255, 0.02);
  border-bottom: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.06));
  flex-shrink: 0;
}
.mt-sep { color: rgba(255, 255, 255, 0.15); }

/* ----- Content area ----- */
.mt-content {
  flex: 1;
  overflow: auto;
  min-height: 0;
}

/* ----- Table (List View) ----- */
.mt-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.mt-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

.mt-table th {
  background: var(--tc-glass-bg-sidebar, rgba(255, 255, 255, 0.04));
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.5));
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  padding: 6px 8px;
  text-align: left;
  border-bottom: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.1));
  white-space: nowrap;
}

.mt-th-sortable {
  cursor: pointer;
  user-select: none;
}
.mt-th-sortable:hover {
  color: rgba(255, 255, 255, 0.8);
}

.mt-th-check {
  width: 32px;
  text-align: center;
}

.mt-table td {
  padding: 5px 8px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.04);
  vertical-align: middle;
}

.mt-row {
  cursor: pointer;
  transition: background 0.15s;
}
.mt-row:hover {
  background: rgba(255, 255, 255, 0.03);
}

.mt-row-ready {
  border-left: 2px solid #4ade80;
}

.mt-row-expanded {
  background: rgba(59, 130, 246, 0.04);
}
.mt-row-expanded:hover {
  background: rgba(59, 130, 246, 0.06);
}

.mt-cell-check {
  width: 32px;
  text-align: center;
}

.mt-cell-domain {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.65);
  white-space: nowrap;
  font-size: 11px;
}

.mt-cell-subtopic {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  white-space: nowrap;
}

.mt-expand-icon {
  display: inline-block;
  width: 12px;
  font-size: 8px;
  color: rgba(255, 255, 255, 0.35);
  transition: transform 0.15s;
}

.mt-cell-num {
  font-variant-numeric: tabular-nums;
  text-align: right;
  color: rgba(255, 255, 255, 0.65);
}

.mt-cell-quality {
  white-space: nowrap;
}

.mt-cell-readiness {
  white-space: nowrap;
}

.mt-cell-source {
  white-space: nowrap;
}

.mt-empty {
  text-align: center;
  padding: 24px;
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.3));
  font-size: 12px;
}

/* ----- Group headers ----- */
.mt-group-header td {
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 10px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.08);
}

.mt-group-label {
  font-weight: 700;
  font-size: 11px;
  color: var(--tc-primary, #3B82F6);
  text-transform: uppercase;
  letter-spacing: .04em;
}

.mt-group-count {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.35);
  margin-left: 8px;
}

/* ----- Expanded row detail ----- */
.mt-row-detail td {
  padding: 0;
  border-bottom: 1px solid rgba(59, 130, 246, 0.1);
}

.mt-detail-content {
  padding: 10px 16px 10px 44px;
  background: rgba(59, 130, 246, 0.03);
  animation: mt-detail-expand 0.2s ease;
}

@keyframes mt-detail-expand {
  from { opacity: 0; max-height: 0; }
  to { opacity: 1; max-height: 200px; }
}

.mt-detail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px 16px;
}

.mt-detail-field {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mt-detail-label {
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, 0.35);
}

.mt-detail-value {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.75);
}

.mt-detail-tag {
  display: inline-block;
  padding: 1px 5px;
  background: rgba(99, 102, 241, 0.12);
  color: #a5b4fc;
  border-radius: 3px;
  font-size: 10px;
  margin-right: 4px;
}

/* ----- Quality stars ----- */
.mt-stars {
  display: inline-flex;
  gap: 1px;
}

.mt-star {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.15);
}

.mt-star-filled {
  color: #facc15;
}

/* ----- Readiness badge ----- */
.mt-readiness-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  white-space: nowrap;
}

/* ----- Source badge ----- */
.mt-source-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: #fff;
  white-space: nowrap;
}

/* ----- Badges (legacy compat) ----- */
.mt-badge {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: #000;
  white-space: nowrap;
}

.mt-badge-duration {
  background: #6366f1;
  color: #fff;
}

/* ----- Pagination ----- */
.mt-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--tc-glass-bg-sidebar, rgba(255, 255, 255, 0.04));
  border-top: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  flex-shrink: 0;
}

.mt-page-info {
  font-size: 11px;
  color: rgba(255, 255, 255, 0.4);
}

.mt-page-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mt-page-btn {
  background: var(--tc-glass-bg-input, rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(148, 163, 184, 0.08);
  color: rgba(255, 255, 255, 0.5);
  padding: 3px 8px;
  font-size: 11px;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  min-width: 28px;
  text-align: center;
}

.mt-page-btn:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
}

.mt-page-btn:disabled {
  opacity: 0.3;
  cursor: default;
}

.mt-page-active {
  background: var(--tc-primary, #3B82F6);
  color: #fff;
  border-color: var(--tc-primary, #3B82F6);
}

/* ----- Grid View (cards) ----- */
#mt-grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 8px;
  padding: 8px;
}

.mt-card {
  background: var(--tc-glass-bg, rgba(255, 255, 255, 0.06));
  border: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  border-radius: var(--tc-radius-sm, 8px);
  padding: 10px;
  transition: background 0.2s;
}
.mt-card:hover {
  background: rgba(255, 255, 255, 0.08);
}
.mt-card-ready {
  border-left: 3px solid #4ade80;
}

.mt-card-header {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 4px;
}

.mt-card-name {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mt-card-domain {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.4);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.mt-card-stats {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 6px;
}

.mt-card-badges {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

/* ----- Training Plan (Batches) ----- */
.mt-batches-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  padding: 8px;
}

.mt-batch-card {
  background: var(--tc-glass-bg, rgba(255, 255, 255, 0.06));
  border: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  border-radius: var(--tc-radius-sm, 8px);
  padding: 10px;
}

.mt-batch-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 8px;
}

.mt-batch-domains {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.mt-batch-domain {
  font-size: 10px;
  padding: 2px 6px;
  background: rgba(99, 102, 241, 0.15);
  color: #a5b4fc;
  border-radius: 4px;
}

/* ----- Trend Chart ----- */
.mt-chart-wrap {
  padding: 8px;
  height: 220px;
  min-height: 180px;
}

/* ----- Sub-panel tabs inside math panel ----- */
.mt-subtabs {
  display: flex;
  gap: 0;
  border-bottom: var(--tc-glass-border, 1px solid rgba(148, 163, 184, 0.08));
  flex-shrink: 0;
}

.mt-subtab {
  padding: 6px 14px;
  font-size: 11px;
  font-weight: 600;
  color: var(--tc-text-muted, rgba(255, 255, 255, 0.4));
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: inherit;
  text-transform: uppercase;
  letter-spacing: .03em;
  transition: color 0.2s, border-color 0.2s;
}
.mt-subtab:hover {
  color: rgba(255, 255, 255, 0.7);
}
.mt-subtab.active {
  color: var(--tc-primary, #3B82F6);
  border-bottom-color: var(--tc-primary, #3B82F6);
}

.mt-subpanel {
  display: none;
  flex: 1;
  overflow: auto;
  min-height: 0;
}
.mt-subpanel.active {
  display: flex;
  flex-direction: column;
}

/* ----- Checkbox styling ----- */
.mt-table input[type="checkbox"],
.mt-card input[type="checkbox"] {
  accent-color: var(--tc-primary, #3B82F6);
  width: 14px;
  height: 14px;
  cursor: pointer;
}

/* ----- Responsive ----- */
@media (max-width: 768px) {
  .mt-toolbar {
    gap: 4px;
    padding: 6px 8px;
  }
  .mt-toolbar select {
    min-width: 60px;
    font-size: 10px;
  }
  .mt-toolbar label {
    font-size: 9px;
  }
  #mt-grid-container {
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  }
  .mt-table {
    font-size: 11px;
  }
  .mt-bulk-bar {
    flex-wrap: wrap;
    gap: 6px;
  }
  .mt-pagination {
    flex-wrap: wrap;
    gap: 6px;
  }
  .mt-detail-grid {
    grid-template-columns: 1fr;
  }
}