/* ==========================================================================
   EDISON — Components System
   ========================================================================== */

/* ---------------------------------------------------------------------------
   4.6 Panel Anatomy
   --------------------------------------------------------------------------- */
.panel {
  background: var(--canvas-pearl);
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: border-color var(--dur-instant) var(--ease-out), box-shadow var(--dur-instant) var(--ease-out);
}

.panel:hover {
  border-color: rgba(11, 18, 32, 0.12);
}

.panel-header {
  height: 48px;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: var(--border-hairline);
  gap: var(--space-3);
}

.panel-title-group {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.panel-icon {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

.panel-title {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.panel-body {
  padding: var(--space-5);
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
}

.panel-footer {
  height: 38px;
  padding: 0 var(--space-5);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: var(--border-hairline);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.panel-footer a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent-blue);
}

/* ---------------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-blue);
  color: var(--text-inverse);
  box-shadow: 0 1px 2px rgba(46, 91, 255, 0.2);
}

.btn-primary:hover {
  background: var(--accent-blue-bright);
}

.btn-primary:active {
  background: var(--accent-blue-deep);
  transform: scale(0.98);
}

.btn-secondary {
  background: var(--canvas-pearl);
  color: var(--text-primary);
  border: var(--border-hairline);
}

.btn-secondary:hover {
  background: var(--canvas-mist);
  border-color: var(--border-strong);
}

.btn-secondary:active {
  transform: scale(0.98);
}

.btn-violet {
  background: var(--accent-violet);
  color: var(--text-inverse);
  box-shadow: 0 1px 2px rgba(124, 58, 237, 0.2);
}

.btn-violet:hover {
  background: var(--accent-violet-bright);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--canvas-mist);
  color: var(--text-primary);
}

.btn-sm {
  padding: 4px 10px;
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

.btn-icon {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  border: var(--border-hairline);
  background: var(--canvas-pearl);
}

.btn-icon:hover {
  background: var(--canvas-mist);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-icon-ghost {
  width: 30px;
  height: 30px;
  padding: 0;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-muted);
}

.btn-icon-ghost:hover {
  background: var(--canvas-mist);
  color: var(--text-primary);
}

/* Demo Pill Button */
.demo-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: var(--text-xs);
  font-weight: 600;
  border: 1px solid rgba(124, 58, 237, 0.3);
  background: rgba(124, 58, 237, 0.06);
  color: var(--accent-violet);
  transition: all var(--dur-instant) var(--ease-out);
}

.demo-pill-btn:hover {
  background: rgba(124, 58, 237, 0.12);
  border-color: var(--accent-violet);
}

.demo-pill-btn.active {
  background: var(--accent-violet);
  color: var(--text-inverse);
  box-shadow: 0 0 14px var(--accent-violet-glow-strong);
}

/* ---------------------------------------------------------------------------
   Chips, Badges, Pills & Indicators
   --------------------------------------------------------------------------- */
.trend-chip {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  line-height: 1.3;
}

.trend-chip.positive {
  background: var(--status-success-glow);
  color: var(--status-success);
}

.trend-chip.negative {
  background: var(--status-danger-glow);
  color: var(--status-danger);
}

.trend-chip.neutral {
  background: var(--canvas-mist);
  color: var(--text-muted);
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  background: var(--canvas-mist);
  color: var(--text-secondary);
  border: var(--border-hairline);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  text-transform: capitalize;
}

.status-badge.pending { background: rgba(0, 184, 217, 0.12); color: var(--status-info); }
.status-badge.in-progress { background: rgba(245, 166, 35, 0.12); color: var(--status-warning); }
.status-badge.submitted { background: rgba(124, 58, 237, 0.12); color: var(--accent-violet); }
.status-badge.graded { background: rgba(0, 184, 132, 0.12); color: var(--status-success); }
.status-badge.overdue { background: rgba(232, 69, 69, 0.12); color: var(--status-danger); }

/* Priority Chips */
.priority-chip {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 6px;
  border-radius: var(--radius-xs);
}

.priority-chip.high { background: var(--status-danger-glow); color: var(--status-danger); }
.priority-chip.medium { background: var(--status-warning-glow); color: var(--status-warning); }
.priority-chip.low { background: var(--canvas-mist); color: var(--text-muted); }

/* ---------------------------------------------------------------------------
   Tabs
   --------------------------------------------------------------------------- */
.tabs-header {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  border-bottom: var(--border-hairline);
  padding: 0 var(--space-4);
}

.tab-btn {
  padding: var(--space-3) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  background: transparent;
  border: none;
  cursor: pointer;
  transition: color var(--dur-instant) var(--ease-out);
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--accent-blue);
  font-weight: 600;
}

.tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--accent-blue);
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
}

/* Pill Filter Group */
.filter-pill-group {
  display: inline-flex;
  align-items: center;
  background: var(--canvas-mist);
  padding: 2px;
  border-radius: var(--radius-sm);
  border: var(--border-hairline);
}

.filter-pill {
  padding: 4px 10px;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-xs);
  cursor: pointer;
  border: none;
  background: transparent;
}

.filter-pill.active {
  background: var(--canvas-pearl);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 0 1px 2px rgba(11, 18, 32, 0.05);
}

/* ---------------------------------------------------------------------------
   Contextual Insight Cards (EDISON Intelligence)
   --------------------------------------------------------------------------- */
.insight-card {
  background: var(--canvas-pearl);
  border: var(--border-hairline);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
  transition: all var(--dur-instant) var(--ease-out);
}

.insight-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-float);
}

.insight-card.alert-priority {
  border-left: 3px solid var(--status-warning);
}

.insight-card.danger-priority {
  border-left: 3px solid var(--status-danger);
}

.insight-card.ai-intelligence {
  border-left: 3px solid var(--accent-violet);
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.02) 0%, var(--canvas-pearl) 100%);
}

.insight-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.insight-signature-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.insight-headline {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  line-height: var(--leading-sm);
}

.insight-body {
  font-size: var(--text-xs);
  color: var(--text-secondary);
  line-height: 1.5;
}

.insight-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.insight-card-tools {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.insight-expand-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
}

.insight-expand-toggle:hover .insight-headline {
  color: var(--accent-blue);
}

.insight-expand-mark {
  flex-shrink: 0;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  transition: transform var(--dur-instant) var(--ease-out);
}

.insight-card.expanded .insight-expand-mark {
  transform: rotate(45deg);
}

.insight-detail {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--canvas-mist);
  color: var(--text-secondary);
  font-size: var(--text-xs);
  line-height: 1.55;
}

.overview-empty-state {
  display: flex;
  min-height: 100px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: var(--space-2);
  color: var(--text-muted);
  text-align: center;
  padding: var(--space-5);
}

.overview-empty-state strong {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.overview-empty-state span {
  max-width: 280px;
  font-size: var(--text-xs);
  line-height: 1.45;
}

.overview-empty-state .empty-state-icon {
  width: 34px;
  height: 34px;
  margin: 0;
}

.detail-stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.detail-stat-grid > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: var(--space-3);
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
}

.detail-stat-grid strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-md);
}

.modal-supporting-copy {
  margin: 0 0 var(--space-4);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.55;
}

.achievement-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
}

.achievement-tile {
  display: flex;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 11px;
  font-weight: 600;
  text-align: center;
}

.achievement-tile:hover,
.achievement-tile:focus-visible {
  border-color: var(--accent-violet);
  outline: 2px solid var(--accent-violet-glow);
  outline-offset: 1px;
}

.achievement-tile > span:last-child {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.achievement-icon {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--canvas-mist);
}

.skill-score-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ---------------------------------------------------------------------------
   4.7 Floating Panels, Modals, Popovers & Dropdowns
   --------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(11, 18, 32, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-base) var(--ease-out);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-window {
  background: var(--canvas-pearl);
  border: var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-pop);
  width: 100%;
  max-width: 580px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: translateY(12px) scale(0.98);
  transition: transform var(--dur-base) var(--ease-out);
}

.modal-backdrop.open .modal-window {
  transform: translateY(0) scale(1);
}

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--text-lg);
  font-weight: 600;
}

.modal-body {
  padding: var(--space-5);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-3) var(--space-5);
  border-top: var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  background: var(--canvas-base);
}

/* Floating Glass Popover & Dropdowns */
.floating-popover {
  position: absolute;
  background: var(--canvas-glass-strong);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop);
  z-index: 1500;
  display: none;
  flex-direction: column;
  min-width: 240px;
  overflow: hidden;
  animation: popover-fade var(--dur-base) var(--ease-out);
}

.floating-popover.open {
  display: flex;
}

/* ---------------------------------------------------------------------------
   Interactive To-do List & Tasks
   --------------------------------------------------------------------------- */
.task-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border-bottom: var(--border-hairline);
  transition: background-color var(--dur-instant) var(--ease-out);
}

.task-item:last-child {
  border-bottom: none;
}

.task-item:hover {
  background: var(--canvas-mist);
}

.task-checkbox-btn {
  width: 18px;
  height: 18px;
  border-radius: var(--radius-xs);
  border: 1.5px solid var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: transparent;
  flex-shrink: 0;
  transition: all var(--dur-instant) var(--ease-out);
}

.task-checkbox-btn:hover {
  border-color: var(--accent-blue);
}

.task-checkbox-btn.checked {
  background: var(--status-success);
  border-color: var(--status-success);
  color: white;
}

.task-content-group {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.task-title {
  font-size: var(--text-sm);
  color: var(--text-primary);
  word-break: break-word;
}

.task-title.completed {
  text-decoration: line-through;
  color: var(--text-faint);
}

.task-meta-row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-muted);
}

/* ---------------------------------------------------------------------------
   Empty State Visuals
   --------------------------------------------------------------------------- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-8) var(--space-4);
  gap: var(--space-2);
}

.empty-state-icon {
  width: 44px;
  height: 44px;
  color: var(--text-faint);
  margin-bottom: var(--space-2);
}

.empty-state-title {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--text-secondary);
}

.empty-state-desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 320px;
}

/* ---------------------------------------------------------------------------
   Toast & Celebration Overlays
   --------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: calc(var(--status-bar-height) + var(--space-4));
  right: var(--space-6);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-2);
  z-index: 3000;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: var(--canvas-pearl);
  border: var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-pop);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-sm);
  min-width: 280px;
  animation: toast-in var(--dur-base) var(--ease-out);
}

.toast.toast-xp {
  border-color: var(--accent-violet);
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.08) 0%, var(--canvas-pearl) 100%);
}

.toast-icon {
  width: 20px;
  height: 20px;
  color: var(--accent-violet);
}

.toast-text {
  flex: 1;
  font-weight: 500;
}

/* ---------------------------------------------------------------------------
   Avatar Circle
   --------------------------------------------------------------------------- */
.avatar-chip {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-blue);
  color: var(--text-inverse);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

/* ---------------------------------------------------------------------------
   Core Analytics Routes (Implementation sequence Part 6)
   --------------------------------------------------------------------------- */
.analytics-view-header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
}

.analytics-view-header h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.4vw, 2.25rem);
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--text-primary);
}

.analytics-view-header p {
  max-width: 760px;
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.6;
}

.analytics-kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-4);
}

.analytics-kpi {
  min-height: 132px;
  padding: var(--space-4);
  align-items: flex-start;
  gap: var(--space-2);
}

.analytics-kpi strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 2.5vw, 2.15rem);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.analytics-kpi strong small {
  color: var(--text-muted);
  font-size: 0.52em;
  font-weight: 500;
}

.analytics-kpi-note {
  color: var(--text-muted);
  font-size: var(--text-xs);
  line-height: 1.4;
}

.analytics-route-grid {
  display: grid;
  gap: var(--space-5);
}

.analytics-route-grid > .panel {
  min-width: 0;
}

.performance-primary-grid,
.attendance-primary-grid,
.subject-detail-primary {
  grid-template-columns: minmax(0, 1.35fr) minmax(300px, 0.85fr);
}

.performance-secondary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.attendance-secondary-grid,
.subject-detail-secondary {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.progress-primary-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.analytics-chart-panel,
.analytics-subject-panel,
.analytics-list-panel,
.subject-assessments-panel {
  min-width: 0;
}

.analytics-control-stack {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-2);
}

.analytics-chart-body {
  min-height: 330px;
  padding-top: var(--space-4);
}

.analytics-route-chart {
  width: 100%;
  min-height: 270px;
}

.analytics-route-chart .chart-svg {
  min-width: 520px;
}

.analytics-subject-list,
.analytics-list-panel .panel-body,
.attendance-subject-list,
.goal-card-list,
.skill-route-list,
.leaderboard-route-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.analytics-subject-row,
.analytics-insight-row,
.attendance-subject-row,
.goal-card,
.skill-route-row,
.analytics-record-row {
  width: 100%;
  text-align: left;
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
  color: var(--text-primary);
}

.analytics-subject-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
  padding: var(--space-3);
}

.analytics-subject-row:hover,
.analytics-insight-row:hover,
.attendance-subject-row:hover,
.goal-card:hover,
.skill-route-row:hover,
.analytics-record-row:hover {
  border-color: var(--accent-blue);
  background: var(--canvas-pearl);
  box-shadow: var(--shadow-float);
}

.analytics-subject-row-head,
.analytics-subject-row-foot,
.goal-card-head,
.goal-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.analytics-subject-row-head {
  font-size: var(--text-sm);
}

.analytics-subject-row-head strong,
.goal-card-head strong {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.analytics-subject-row-foot,
.goal-card-foot,
.panel-subtitle {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.analytics-subject-row-foot [data-subject-sparkline] {
  display: inline-flex;
  width: 88px;
  height: 22px;
  align-items: center;
  justify-content: flex-end;
}

.analytics-subject-row-foot [data-subject-sparkline] .sparkline-svg {
  width: 88px;
  height: 22px;
}

.analytics-bar-track {
  position: relative;
  display: block;
  width: 100%;
  height: 7px;
  overflow: visible;
  border-radius: var(--radius-pill);
  background: var(--canvas-mist);
}

.analytics-bar-fill {
  display: block;
  height: 100%;
  min-width: 2px;
  border-radius: inherit;
  transition: width var(--dur-slow) var(--ease-out);
}

.analytics-target-marker {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 2px;
  border-radius: 2px;
  background: var(--text-primary);
  opacity: 0.6;
}

.analytics-insight-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
}

.analytics-insight-row span:nth-child(2) {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.analytics-insight-row small {
  color: var(--text-muted);
  font-size: var(--text-xs);
  line-height: 1.4;
}

.analytics-insight-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--text-muted);
  box-shadow: 0 0 0 4px var(--canvas-mist);
}

.analytics-insight-dot.danger { background: var(--status-danger); }
.analytics-insight-dot.success { background: var(--status-success); }

.prediction-panel .panel-body {
  gap: var(--space-3);
}

.prediction-value {
  color: var(--accent-violet);
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1;
}

.prediction-panel p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.5;
}

.prediction-range,
.period-legend {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.prediction-range strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
}

.period-comparison-panel .panel-header > div:first-child {
  min-width: 0;
}

.period-metric-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: var(--space-3);
}

.period-metric {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-3);
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
}

.period-metric strong {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--text-md);
}

.period-previous {
  color: var(--text-muted);
  font-size: 10px;
}

.period-bar-pair {
  display: flex;
  align-items: flex-end;
  height: 42px;
  gap: 4px;
}

.period-bar-pair i {
  display: block;
  width: 10px;
  min-height: 3px;
  border-radius: 3px 3px 0 0;
  background: var(--accent-blue);
}

.period-bar-pair i:last-child {
  background: var(--accent-violet);
}

.period-legend {
  justify-content: flex-start;
  margin-top: var(--space-3);
}

.period-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.period-legend i {
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent-blue);
}

.period-legend i:last-child { background: var(--accent-violet); }

.subject-detail-header {
  gap: var(--space-3);
}

.subject-detail-header .btn {
  align-self: flex-start;
}

.subject-detail-header h2 {
  max-width: 760px;
}

.subject-kpi-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.subject-attendance-body {
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--space-3);
}

.subject-attendance-body #subject-attendance-radial {
  width: 126px;
  height: 126px;
}

.subject-attendance-body p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.syllabus-topic-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.syllabus-topic-row {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(90px, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  text-align: left;
}

.syllabus-topic-row:hover {
  background: var(--canvas-mist);
}

.syllabus-topic-row > span:first-child {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.syllabus-topic-row small {
  color: var(--text-muted);
  font-size: 10px;
}

.analytics-record-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.analytics-record-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3);
}

.analytics-record-row > span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.analytics-record-row small {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.analytics-record-row > strong:last-child {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.analytics-empty-inline {
  margin: 0;
  color: var(--text-muted);
  font-size: var(--text-sm);
}

.histogram-bars {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  align-items: end;
  gap: var(--space-2);
  min-height: 188px;
  padding-top: var(--space-4);
}

.histogram-bar {
  position: relative;
  display: flex;
  height: 170px;
  min-width: 0;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  padding: 0;
  border-radius: var(--radius-xs);
  color: var(--text-muted);
}

.histogram-bar:hover .histogram-bar-fill {
  background: var(--accent-violet);
}

.histogram-bar-fill {
  display: block;
  width: 100%;
  min-height: 4px;
  height: var(--bar-height);
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
  background: var(--accent-blue);
  transition: height var(--dur-slow) var(--ease-out), background var(--dur-instant) var(--ease-out);
}

.histogram-bar-count {
  position: absolute;
  bottom: calc(var(--bar-height) + 5px);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 10px;
}

.histogram-bar-label {
  width: 100%;
  overflow: hidden;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.attendance-calendar-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.attendance-calendar-legend span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.attendance-swatch {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--canvas-mist);
}

.attendance-swatch.present,
.attendance-cell.present { background: var(--status-success-glow); }
.attendance-swatch.late,
.attendance-cell.late { background: var(--status-warning-glow); }
.attendance-swatch.absent,
.attendance-cell.absent { background: var(--status-danger-glow); }
.attendance-swatch.planned,
.attendance-cell.planned { background: var(--canvas-mist); }

.attendance-calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: var(--space-2);
}

.attendance-cell {
  display: flex;
  min-height: 58px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  padding: var(--space-2);
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-align: left;
}

.attendance-cell:hover,
.attendance-cell:focus-visible {
  border-color: var(--accent-blue);
  transform: translateY(-1px);
}

.attendance-cell span {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
}

.attendance-cell small {
  color: var(--text-muted);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.analytics-risk-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4);
  border: 1px solid color-mix(in srgb, var(--status-warning) 38%, transparent);
  border-radius: var(--radius-md);
  background: var(--status-warning-glow);
}

.analytics-risk-banner > div {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.analytics-risk-banner strong {
  color: var(--text-primary);
}

.analytics-risk-banner p {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.45;
}

.attendance-subject-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3);
}

.attendance-subject-row > span:first-child {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.attendance-subject-row small {
  color: var(--text-muted);
  font-size: 10px;
}

.attendance-subject-row.selected {
  border-color: var(--accent-blue);
  background: var(--accent-blue-glow);
}

.attendance-subject-score {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-md);
  font-weight: 700;
}

.attendance-subject-score.success { color: var(--status-success); }
.attendance-subject-score.warning { color: var(--status-warning); }
.attendance-subject-score.danger { color: var(--status-danger); }

.compliance-score-large {
  color: var(--accent-blue);
  font-family: var(--font-mono);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1;
}

.compliance-score-large small {
  color: var(--text-muted);
  font-size: 0.38em;
  font-weight: 500;
}

.compliance-chip-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin: var(--space-5) 0;
}

.compliance-chip-grid span {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: var(--space-2);
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
}

.compliance-chip-grid strong {
  font-family: var(--font-mono);
}

.compliance-chip-grid small {
  color: var(--text-muted);
  font-size: 10px;
  line-height: 1.3;
}

.analytics-modal-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.analytics-modal-list-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  width: 100%;
  padding: var(--space-3);
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
  text-align: left;
}

.analytics-modal-list-row > span:first-child {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.analytics-modal-list-row small {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.analytics-modal-list-row:hover {
  border-color: var(--accent-blue);
  background: var(--canvas-pearl);
}

.attendance-action-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 4px;
}

.analytics-modal-steps {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding-left: var(--space-5);
  color: var(--text-secondary);
  line-height: 1.5;
}

.analytics-form {
  display: grid;
  gap: var(--space-4);
}

.analytics-form label {
  display: grid;
  gap: var(--space-2);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  font-weight: 600;
}

.analytics-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
}

.form-error {
  min-height: 1.2em;
  margin: 0;
  color: var(--status-danger);
  font-size: var(--text-xs);
}

.goal-manager-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.goal-manager-item {
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--canvas-base);
}

.goal-manager-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3);
  cursor: pointer;
  list-style: none;
}

.goal-manager-item summary::-webkit-details-marker { display: none; }

.goal-manager-item summary > span {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 3px;
}

.goal-manager-item summary small {
  color: var(--text-muted);
  font-size: var(--text-xs);
}

.goal-manager-content {
  display: grid;
  gap: var(--space-3);
  padding: 0 var(--space-3) var(--space-3);
}

.milestone-manager-list {
  display: grid;
  gap: var(--space-2);
}

.milestone-manager-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-xs);
  background: var(--canvas-pearl);
  font-size: var(--text-sm);
}

.milestone-manager-row small {
  color: var(--text-muted);
  font-size: 10px;
}

.goal-manager-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.goal-manager-actions input {
  min-width: 160px;
  flex: 1 1 180px;
}

.danger-text { color: var(--status-danger); }

.goal-card {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-3);
  padding: var(--space-3);
}

.goal-card-foot {
  line-height: 1.35;
}

.skill-route-row {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
}

.skill-route-rank {
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.skill-route-copy {
  display: grid;
  min-width: 0;
  gap: var(--space-2);
}

.skill-route-copy strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.skill-route-score {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.skill-route-score > strong {
  font-family: var(--font-mono);
}

.skill-detail-sparkline {
  min-height: 42px;
  margin: var(--space-4) 0;
}

.leaderboard-route-panel {
  min-width: 0;
}

.leaderboard-route-row {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-bottom: var(--border-hairline);
}

.leaderboard-route-row:last-child { border-bottom: 0; }

.leaderboard-route-row > span:nth-child(2) {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 2px;
}

.leaderboard-route-row small {
  color: var(--text-muted);
  font-size: 10px;
}

.leaderboard-route-row.current {
  margin: 0 calc(var(--space-2) * -1);
  padding-left: var(--space-2);
  padding-right: var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--accent-blue-glow);
}

.btn-danger {
  background: var(--status-danger);
  color: var(--text-inverse);
}

.btn-danger:hover {
  background: color-mix(in srgb, var(--status-danger) 82%, #000);
}

.chart-reference-line {
  stroke: var(--text-faint);
  opacity: 0.8;
}