/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
  color: var(--color-text);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--color-surface);
  color: var(--color-text);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(46, 125, 82, 0.15);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary-dark);
}

.btn-accent:hover:not(:disabled) {
  background: var(--color-accent-light);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-primary);
  color: white;
}

.btn-danger {
  background: var(--color-danger);
  color: white;
}

.btn-sm {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.card-header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-primary);
}

.card-body {
  padding: 1.5rem;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  flex-shrink: 0;
}

.stat-icon.blue { background: #e3f2fd; color: #1565c0; }
.stat-icon.green { background: #e8f5e9; color: var(--color-primary); }
.stat-icon.yellow { background: #fff8e1; color: #f57f17; }
.stat-icon.red { background: #ffebee; color: var(--color-danger); }

.stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #dbeafe; color: #1e40af; }

/* Table */
.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead th {
  background: var(--color-primary);
  color: white;
  padding: 0.85rem 1rem;
  text-align: right;
  font-weight: 600;
  white-space: nowrap;
}

tbody td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

tbody tr:hover {
  background: #f8fafc;
}

tbody tr:last-child td {
  border-bottom: none;
}

/* Alerts */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-success { background: #dcfce7; color: #166534; border: 1px solid #bbf7d0; }
.alert-error { background: #fee2e2; color: #991b1b; border: 1px solid #fecaca; }
.alert-info { background: #dbeafe; color: #1e40af; border: 1px solid #bfdbfe; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* Upload Zone */
.upload-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  background: #fafbfc;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--color-primary-light);
  background: #f0f7ff;
}

.upload-zone .upload-icon {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
}

.upload-zone p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.upload-zone .file-name {
  color: var(--color-primary);
  font-weight: 600;
  margin-top: 0.5rem;
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.tab {
  padding: 0.75rem 1.25rem;
  border: none;
  background: none;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition);
  white-space: nowrap;
  font-size: 0.9rem;
}

.tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-accent);
}

/* Chart container */
.chart-container {
  position: relative;
  height: 320px;
  margin: 1rem 0;
}

.chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .chart-row {
    grid-template-columns: 1fr;
  }

  .chart-container {
    height: 280px;
  }
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.75rem;
  }

  .stat-card {
    padding: 1rem;
    gap: 0.75rem;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .card-header {
    padding: 1rem;
  }

  .card-header h3 {
    font-size: 0.95rem;
    line-height: 1.4;
  }

  .card-body {
    padding: 1rem;
  }

  .filters-bar {
    gap: 0.75rem;
  }

  .filters-bar .form-group {
    min-width: 0;
    flex: 1 1 100%;
  }

  .filters-bar .btn {
    width: 100%;
  }

  .upload-zone {
    padding: 1.5rem 1rem;
  }

  .unit-card {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .unit-progress {
    max-width: none;
    width: 100%;
  }

  .report-header {
    flex-direction: column;
    align-items: stretch;
  }

  .report-meta {
    gap: 1rem;
  }

  .report-actions {
    width: 100%;
  }

  .report-actions .btn {
    flex: 1 1 auto;
    min-width: 0;
  }

  .chart-container {
    height: 240px;
  }

  table {
    font-size: 0.82rem;
  }

  thead th,
  tbody td {
    padding: 0.65rem 0.75rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .btn {
    padding: 0.65rem 1rem;
    font-size: 0.9rem;
  }

  .tab {
    padding: 0.65rem 0.9rem;
    font-size: 0.85rem;
  }

  .meta-item span {
    font-size: 0.92rem;
  }
}

/* Filters bar */
.filters-bar {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
  align-items: flex-end;
}

.filters-bar .form-group {
  margin-bottom: 0;
  min-width: 180px;
}

/* Loading */
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 2rem auto;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-muted);
}

.empty-state .empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* Report specific */
.report-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.report-meta {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.report-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-start;
}

.meta-item label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  display: block;
}

.meta-item span {
  font-weight: 700;
  font-size: 1rem;
}

.unit-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 0.75rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.unit-card.strength { border-right: 4px solid var(--color-success); }
.unit-card.medium { border-right: 4px solid var(--color-warning); }
.unit-card.gap { border-right: 4px solid var(--color-danger); }

.unit-progress {
  flex: 1;
  max-width: 200px;
}

.progress-bar {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  margin-top: 0.25rem;
}

.progress-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.5s ease;
}

.progress-fill.green { background: var(--color-success); }
.progress-fill.yellow { background: var(--color-warning); }
.progress-fill.red { background: var(--color-danger); }

.recommendations-list {
  list-style: none;
}

.recommendations-list li {
  padding: 0.85rem 1rem;
  background: #f8fafc;
  border-radius: var(--radius-md);
  margin-bottom: 0.5rem;
  border-right: 3px solid var(--color-accent);
}

.recommendations-list li strong {
  color: var(--color-primary);
}

/* Overlay for mobile sidebar */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}

.sidebar-overlay.show {
  display: block;
}

/* Error list */
.error-list {
  max-height: 200px;
  overflow-y: auto;
  margin-top: 0.75rem;
}

.error-list li {
  font-size: 0.85rem;
  padding: 0.25rem 0;
  color: var(--color-danger);
}

/* Dashboard activation & graph picker */
.spec-multi {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  padding: 0.5rem 0;
}

.spec-check {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  cursor: pointer;
}

.spec-check.disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.dash-controls {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.25rem;
}

.dashboard-toolbar {
  align-items: flex-end;
  margin-bottom: 0;
}

.view-controls {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  padding: 0.65rem 0.85rem;
  background: #f4f7f5;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.view-controls-label {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}

.view-toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex: 1;
}

.view-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: #fff;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s, box-shadow 0.15s;
}

.view-toggle:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.view-toggle.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 1px 3px rgba(15, 80, 50, 0.22);
}

.view-toggle-icon {
  display: inline-flex;
  line-height: 0;
}

.view-toggle-icon .svg-icon {
  width: 15px;
  height: 15px;
}

.view-toggle-text {
  line-height: 1.2;
}

@media (max-width: 640px) {
  .view-controls {
    flex-direction: column;
    align-items: stretch;
  }
}

.activation-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.activation-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fafbfc;
}

/* Questions bank */
.chart-empty-card .card-body {
  min-height: 120px;
  display: flex;
  align-items: center;
}

.questions-summary {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin: 0 0 1rem;
}

.questions-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: #fff;
}

.questions-table {
  width: 100%;
  border-collapse: collapse;
  border-spacing: 0;
  font-size: 0.9rem;
  margin: 0;
  table-layout: auto;
}

.questions-table thead th {
  background: var(--color-primary);
  color: #fff;
  padding: 0.85rem 1rem;
  text-align: right;
  font-weight: 600;
  white-space: nowrap;
}

.questions-table tbody td {
  padding: 0.9rem 1rem;
  vertical-align: top;
  border-bottom: 1px solid var(--color-border);
  background: #fff;
}

.questions-table tbody tr:nth-child(even) td {
  background: #f7faf8;
}

.questions-table tbody tr:hover td {
  background: #eef6f1;
}

.questions-table tbody tr:last-child td {
  border-bottom: none;
}

.questions-table .q-id {
  font-size: 0.75rem;
  word-break: break-all;
}

.questions-table .q-text {
  font-weight: 600;
  margin-bottom: 0.45rem;
  line-height: 1.45;
}

.questions-table .q-opts {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.8rem;
  line-height: 1.45;
}

.questions-table .q-correct {
  color: var(--color-primary);
  font-weight: 700;
}

.questions-table .muted,
.muted {
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.questions-table td.q-actions {
  white-space: nowrap;
  width: 1%;
}

.questions-table .q-actions-inner {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.q-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

@media (max-width: 720px) {
  .q-options-grid {
    grid-template-columns: 1fr;
  }
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 35, 28, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal-panel {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  width: min(720px, 100%);
  max-height: 92vh;
  overflow: auto;
  box-shadow: 0 12px 40px rgba(20, 40, 30, 0.2);
}

.modal-header,
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.modal-footer {
  border-bottom: none;
  border-top: 1px solid var(--color-border);
  justify-content: flex-start;
}

.modal-header h3 {
  margin: 0;
  color: var(--color-primary);
  font-size: 1.05rem;
}

.modal-body {
  padding: 1.25rem;
}