/* Neft Teacher — Student Growth Tracker
   Layered on /assets/shared.css; only tool-specific styles live here. */

:root {
  --st-bg: #f6f8fb;
  --st-panel: #ffffff;
  --st-ink: #1b2733;
  --st-muted: #5b6b7b;
  --st-line: #e2e8f0;
  --st-accent: #2563eb;
  --b-strong: #15803d;
  --b-strong-bg: #dcfce7;
  --b-likely: #0369a1;
  --b-likely-bg: #e0f2fe;
  --b-approaching: #b45309;
  --b-approaching-bg: #fef3c7;
  --b-reteach: #b91c1c;
  --b-reteach-bg: #fee2e2;
  --r-high: #b91c1c;
  --r-high-bg: #fee2e2;
  --r-mid: #b45309;
  --r-mid-bg: #fef3c7;
  --r-low: #15803d;
  --r-low-bg: #dcfce7;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--st-accent);
  color: #fff;
  padding: 0.5rem 0.9rem;
  border-radius: 0 0 8px 0;
  z-index: 50;
}
.skip-link:focus {
  left: 0;
}

.tracker-shell {
  max-width: 1180px;
  margin: 0 auto;
  padding: 1rem 1.25rem 4rem;
  color: var(--st-ink);
}

.tracker-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  margin: 0.5rem 0 1.25rem;
}
.tracker-head h1 {
  margin: 0.2rem 0 0.15rem;
  font-size: 1.6rem;
}
.tracker-head .lede {
  margin: 0;
  color: var(--st-muted);
  max-width: 60ch;
}
.updated {
  font-size: 0.8rem;
  color: var(--st-muted);
}

/* Toolbar */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  background: var(--st-panel);
  border: 1px solid var(--st-line);
  border-radius: 12px;
  padding: 0.7rem 0.85rem;
  margin-bottom: 1rem;
}
.toolbar .tabs {
  display: flex;
  gap: 0.25rem;
  background: #eef2f7;
  border-radius: 999px;
  padding: 0.2rem;
}
.tab {
  border: 0;
  background: transparent;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  color: var(--st-muted);
  cursor: pointer;
}
.tab.active {
  background: #fff;
  color: var(--st-accent);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
}
.toolbar .spacer {
  flex: 1 1 auto;
}
.toolbar select,
.toolbar input[type="search"] {
  font: inherit;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--st-line);
  border-radius: 8px;
  background: #fff;
  color: var(--st-ink);
}
.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--st-line);
  background: #fff;
  color: var(--st-ink);
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  cursor: pointer;
}
.btn.primary {
  background: var(--st-accent);
  border-color: var(--st-accent);
  color: #fff;
}
.btn:hover {
  border-color: var(--st-accent);
}

/* KPI cards */
.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.1rem;
}
.kpi {
  background: var(--st-panel);
  border: 1px solid var(--st-line);
  border-left: 4px solid var(--st-line);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
}
.kpi-value {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1.1;
}
.kpi-label {
  font-weight: 600;
  font-size: 0.85rem;
}
.kpi-sub {
  color: var(--st-muted);
  font-size: 0.78rem;
}
.kpi-b-strong {
  border-left-color: var(--b-strong);
}
.kpi-b-likely {
  border-left-color: var(--b-likely);
}
.kpi-b-approaching {
  border-left-color: var(--b-approaching);
}
.kpi-b-reteach {
  border-left-color: var(--b-reteach);
}
.kpi-r-high {
  border-left-color: var(--r-high);
}
.kpi-r-mid {
  border-left-color: var(--r-mid);
}

/* Panels */
.panel {
  background: var(--st-panel);
  border: 1px solid var(--st-line);
  border-radius: 12px;
  padding: 1rem 1.1rem;
  margin-bottom: 1.1rem;
}
.panel h2,
.panel h3 {
  margin: 0 0 0.35rem;
}
.muted {
  color: var(--st-muted);
}
.hint {
  font-size: 0.82rem;
}

/* Chips & badges */
.chip {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
  margin-left: 0.35rem;
  white-space: nowrap;
}
.b-strong {
  background: var(--b-strong-bg);
  color: var(--b-strong);
}
.b-likely {
  background: var(--b-likely-bg);
  color: var(--b-likely);
}
.b-approaching {
  background: var(--b-approaching-bg);
  color: var(--b-approaching);
}
.b-reteach {
  background: var(--b-reteach-bg);
  color: var(--b-reteach);
}
.r-high {
  background: var(--r-high-bg);
  color: var(--r-high);
}
.r-mid {
  background: var(--r-mid-bg);
  color: var(--r-mid);
}
.r-low {
  background: var(--r-low-bg);
  color: var(--r-low);
}
.num {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}
.trend {
  font-weight: 600;
  font-size: 0.85rem;
}
.t-up {
  color: var(--b-strong);
}
.t-down {
  color: var(--r-high);
}
.t-flat {
  color: var(--st-muted);
}

/* Tables */
.table-wrap {
  overflow-x: auto;
}
table.roster,
table.std-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--st-panel);
  border: 1px solid var(--st-line);
  border-radius: 12px;
  overflow: hidden;
}
table.roster th,
table.std-table th {
  text-align: left;
  background: #f1f5f9;
  padding: 0.6rem 0.7rem;
  font-size: 0.82rem;
  border-bottom: 1px solid var(--st-line);
  cursor: pointer;
  user-select: none;
}
table.std-table th {
  cursor: default;
}
table.roster td,
table.std-table td {
  padding: 0.55rem 0.7rem;
  border-bottom: 1px solid var(--st-line);
  font-size: 0.9rem;
  vertical-align: middle;
}
.roster-row {
  cursor: pointer;
}
.roster-row:hover,
.roster-row:focus {
  background: #eff6ff;
  outline: none;
}
table.roster th:focus {
  outline: 2px solid var(--st-accent);
  outline-offset: -2px;
}

/* Mini bars */
.minibar {
  display: inline-block;
  width: 84px;
  height: 8px;
  background: #eef2f7;
  border-radius: 999px;
  overflow: hidden;
  vertical-align: middle;
}
.minibar-fill {
  display: block;
  height: 100%;
}
.minibar-fill.b-strong {
  background: var(--b-strong);
}
.minibar-fill.b-likely {
  background: var(--b-likely);
}
.minibar-fill.b-approaching {
  background: var(--b-approaching);
}
.minibar-fill.b-reteach {
  background: var(--b-reteach);
}

/* Reteach priorities */
.pri-list {
  display: grid;
  gap: 0.6rem;
}
.pri-item {
  border: 1px solid var(--st-line);
  border-radius: 10px;
  padding: 0.6rem 0.75rem;
}
.pri-head {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.35rem;
}
.pri-bar {
  height: 9px;
  background: #eef2f7;
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.35rem;
}
.pri-fill {
  display: block;
  height: 100%;
  background: var(--b-reteach);
}
.pri-names {
  font-size: 0.8rem;
  color: var(--st-muted);
}

/* Groups */
.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
}
.group-card {
  border: 1px solid var(--st-line);
  border-radius: 10px;
  padding: 0.7rem 0.8rem;
}
.group-title {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.4rem;
}
.group-members {
  margin: 0;
  padding-left: 1.1rem;
  font-size: 0.88rem;
}

/* Sparkline */
.spark {
  width: 100%;
  height: auto;
  max-width: 540px;
  background: #fdfefe;
  border: 1px solid var(--st-line);
  border-radius: 8px;
  padding: 8px;
}
.spark-line {
  fill: none;
  stroke: var(--st-accent);
  stroke-width: 3;
}
.spark-dot {
  transition: r 0.2s ease, stroke-width 0.2s ease;
}
.spark-point-group:hover .spark-dot {
  r: 8;
  stroke-width: 2.5;
}
.spark-ref {
  stroke: #94a3b8;
  stroke-dasharray: 4 3;
  stroke-width: 1;
}

/* Radar & Standards Grid Layout */
.standards-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) 280px;
  gap: 24px;
  align-items: center;
}
.radar-svg {
  width: 100%;
  max-width: 260px;
  height: auto;
}
@media (max-width: 800px) {
  .standards-grid {
    grid-template-columns: 1fr;
  }
  .radar-svg {
    max-width: 280px;
    margin: 0 auto;
  }
}

/* Detail */
.detail-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
}
.detail-head h2 {
  margin: 0;
}
.detail-badges {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}
.back-btn {
  border: 0;
  background: none;
  color: var(--st-accent);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0.3rem 0;
  margin-bottom: 0.5rem;
}
.recommend {
  border-left: 4px solid var(--st-accent);
}

/* Empty state */
.panel.empty {
  text-align: center;
  padding: 2.5rem 1.5rem;
}

/* Manual dialog */
dialog.manual {
  border: 1px solid var(--st-line);
  border-radius: 14px;
  padding: 0;
  max-width: 480px;
  width: 92%;
  color: var(--st-ink);
}
dialog.manual::backdrop {
  background: rgba(15, 23, 42, 0.45);
}
.manual-body {
  padding: 1.2rem 1.3rem;
}
.manual-body h2 {
  margin: 0 0 0.8rem;
}
.field {
  margin-bottom: 0.7rem;
}
.field label {
  display: block;
  font-weight: 600;
  font-size: 0.82rem;
  margin-bottom: 0.2rem;
}
.field input {
  width: 100%;
  font: inherit;
  padding: 0.45rem 0.55rem;
  border: 1px solid var(--st-line);
  border-radius: 8px;
  box-sizing: border-box;
}
.field-row {
  display: flex;
  gap: 0.6rem;
}
.field-row .field {
  flex: 1;
}
.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.6rem;
}

@media (max-width: 640px) {
  .tracker-head h1 {
    font-size: 1.35rem;
  }
  .toolbar .spacer {
    display: none;
  }
}

@media print {
  .toolbar,
  .btn,
  .back-btn,
  .updated {
    display: none !important;
  }
  .panel,
  .kpi,
  table.roster {
    break-inside: avoid;
  }
  body {
    background: #fff;
  }
}