/* ============================================================
   Style 2 — Analytics Dashboard | NQ57
   Dark Fintech / OLED Dark Mode
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --s2-bg:        #F1F5F9;
  --s2-surface:   #FFFFFF;
  --s2-surface2:  #F8FAFC;
  --s2-border:    #E2E8F0;
  --s2-primary:   #0369A1;
  --s2-accent:    #7C3AED;
  --s2-text:      #0F172A;
  --s2-muted:     #64748B;
  --s2-success:   #059669;
  --s2-warning:   #D97706;
  --s2-danger:    #DC2626;
  --s2-font:      'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --s2-r-card:    12px;
  --s2-r-chip:    6px;
  --s2-r-btn:     8px;
  --s2-glow:      none;
  --s2-chart-c1:  #0369A1;
  --s2-chart-c2:  #7C3AED;
  --s2-chart-c3:  #059669;
  --s2-chart-c4:  #2563EB;
  --s2-chart-c5:  #DC2626;
  --s2-chart-c6:  #0891B2;
}

/* ---------- Base ---------- */
html, body {
  background: var(--s2-bg);
  color: var(--s2-text);
  font-family: var(--s2-font);
  font-size: 14px;
  line-height: 1.5;
  min-height: 100vh;
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--s2-bg); }
::-webkit-scrollbar-thumb { background: var(--s2-border); border-radius: 3px; }

/* ---------- Sticky Header ---------- */
.s2-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--s2-bg);
  border-bottom: 1px solid var(--s2-border);
  padding: 12px 24px;
}

.s2-header-inner {
  max-width: 1600px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.s2-header-title {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.s2-header-badge {
  background: var(--s2-primary);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 3px 8px;
  border-radius: 4px;
  flex-shrink: 0;
}

.s2-header-text {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--s2-text);
}

.s2-header-date {
  font-size: 12px;
  color: var(--s2-muted);
  margin-left: 4px;
}

.s2-header-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

/* ---------- Filters ---------- */
.s2-filters {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.s2-select {
  background: var(--s2-surface);
  color: var(--s2-text);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-btn);
  padding: 6px 10px;
  font-family: var(--s2-font);
  font-size: 13px;
  cursor: pointer;
  outline: none;
  transition: border-color 150ms ease;
  min-width: 120px;
}

.s2-select:focus,
.s2-select:hover {
  border-color: var(--s2-primary);
}

.s2-select option {
  background: var(--s2-surface);
}

.s2-search-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.s2-search-icon {
  position: absolute;
  left: 9px;
  font-size: 12px;
  pointer-events: none;
  opacity: 0.5;
}

.s2-search {
  background: var(--s2-surface);
  color: var(--s2-text);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-btn);
  padding: 6px 10px 6px 28px;
  font-family: var(--s2-font);
  font-size: 13px;
  outline: none;
  width: 200px;
  transition: border-color 150ms ease, width 200ms ease;
}

.s2-search:focus {
  border-color: var(--s2-primary);
  width: 260px;
}

.s2-search::placeholder { color: var(--s2-muted); }

/* ---------- Quick Chips ---------- */
.s2-chips {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.s2-chip {
  background: var(--s2-surface2);
  color: var(--s2-muted);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-chip);
  padding: 4px 12px;
  font-family: var(--s2-font);
  font-size: 12px;
  cursor: pointer;
  transition: all 150ms ease;
  white-space: nowrap;
}

.s2-chip:hover {
  color: var(--s2-text);
  border-color: var(--s2-primary);
}

.s2-chip.active {
  background: var(--s2-primary);
  color: #FFFFFF;
  border-color: var(--s2-primary);
  font-weight: 600;
}

.s2-chip-reset {
  background: transparent;
  color: var(--s2-danger);
  border-color: var(--s2-danger);
}

.s2-chip-reset:hover {
  background: var(--s2-danger);
  color: #fff;
  border-color: var(--s2-danger);
}

/* ---------- Back link ---------- */
.s2-back {
  max-width: 1600px;
  margin: 14px auto 0;
  padding: 0 24px;
}

.s2-back .btn-back {
  color: var(--s2-muted);
  border-color: var(--s2-border);
  font-size: 13px;
}

.s2-back .btn-back:hover {
  color: var(--s2-text);
  border-color: var(--s2-primary);
}

/* ---------- Loading state ---------- */
.s2-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  min-height: 60vh;
  color: var(--s2-muted);
  font-size: 14px;
}

/* ---------- Main ---------- */
.s2-main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 20px 24px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* ---------- KPI Row ---------- */
.s2-kpi {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.s2-kpi-card {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color 200ms ease, transform 200ms ease;
}

.s2-kpi-card:hover {
  border-color: var(--s2-primary);
  transform: translateY(-2px);
}

.s2-kpi-card.s2-kpi-accent {
  border-color: var(--s2-primary);
  background: linear-gradient(135deg, var(--s2-surface) 0%, rgba(3,105,161,0.06) 100%);
}

.s2-kpi-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--s2-muted);
}

.s2-kpi-value {
  font-size: 28px;
  font-weight: 600;
  color: var(--s2-text);
  text-shadow: var(--s2-glow);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.s2-kpi-pct {
  color: var(--s2-primary);
  text-shadow: var(--s2-glow);
}

.s2-kpi-sub {
  font-size: 11px;
  color: var(--s2-muted);
}

/* ---------- Charts Row (Section I + II) ---------- */
.s2-charts-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.s2-chart-card {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.s2-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.s2-card-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.3px;
  color: var(--s2-text);
}

/* Toggle group */
.s2-toggle-group {
  display: flex;
  gap: 0;
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-btn);
  overflow: hidden;
}

.s2-toggle {
  background: transparent;
  color: var(--s2-muted);
  border: none;
  padding: 5px 12px;
  font-family: var(--s2-font);
  font-size: 12px;
  cursor: pointer;
  transition: all 150ms ease;
}

.s2-toggle.active {
  background: var(--s2-primary);
  color: #FFFFFF;
  font-weight: 600;
}

.s2-toggle:not(.active):hover {
  color: var(--s2-text);
  background: var(--s2-surface2);
}

/* Chart body */
.s2-chart-body {
  display: flex;
  align-items: center;
  gap: 20px;
}

.s2-donut-wrap {
  position: relative;
  flex-shrink: 0;
  width: 180px;
  height: 180px;
}

.s2-donut-wrap canvas {
  width: 180px !important;
  height: 180px !important;
}

.s2-donut-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
}

.s2-donut-total {
  font-size: 22px;
  font-weight: 700;
  color: var(--s2-text);
  text-shadow: var(--s2-glow);
  line-height: 1.1;
}

.s2-donut-label {
  font-size: 10px;
  color: var(--s2-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Legend */
.s2-legend {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 7px;
  overflow-y: auto;
  max-height: 200px;
}

.s2-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  border-radius: 4px;
  padding: 3px 6px;
  transition: background 150ms ease;
}

.s2-legend-item:hover {
  background: var(--s2-surface2);
}

.s2-legend-item.active-filter {
  background: rgba(245,158,11,0.1);
  outline: 1px solid var(--s2-primary);
}

.s2-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.s2-legend-name {
  flex: 1;
  font-size: 12px;
  color: var(--s2-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.s2-legend-val {
  font-size: 11px;
  color: var(--s2-muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.s2-legend-pct {
  font-size: 11px;
  font-weight: 500;
  color: var(--s2-primary);
  white-space: nowrap;
  min-width: 38px;
  text-align: right;
}

/* ---------- Section III: Table ---------- */
.s2-table-section {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  overflow: hidden;
}

.s2-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--s2-border);
  flex-wrap: wrap;
  gap: 10px;
}

.s2-section-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--s2-text);
}

.s2-section-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Tabs */
.s2-tabs {
  display: flex;
  gap: 0;
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-btn);
  overflow: hidden;
}

.s2-tab {
  background: transparent;
  color: var(--s2-muted);
  border: none;
  padding: 5px 14px;
  font-family: var(--s2-font);
  font-size: 12px;
  cursor: pointer;
  transition: all 150ms ease;
}

.s2-tab.active {
  background: var(--s2-primary);
  color: #FFFFFF;
  font-weight: 600;
}

.s2-tab:not(.active):hover {
  color: var(--s2-text);
  background: var(--s2-surface2);
}

.s2-count-badge {
  font-size: 11px;
  color: var(--s2-muted);
  background: var(--s2-surface2);
  border: 1px solid var(--s2-border);
  border-radius: 12px;
  padding: 2px 10px;
  white-space: nowrap;
}

/* Table wrap */
.s2-table-wrap {
  overflow-x: auto;
}

/* Table styles */
.s2-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.s2-table thead tr {
  background: var(--s2-surface2);
}

.s2-table th {
  text-align: left;
  padding: 10px 14px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--s2-muted);
  border-bottom: 1px solid var(--s2-border);
  white-space: nowrap;
  user-select: none;
}

.s2-th-sortable {
  cursor: pointer;
  transition: color 150ms ease;
}

.s2-th-sortable:hover {
  color: var(--s2-primary);
}

.s2-th-sortable.sort-asc .s2-sort-icon::after { content: ' ↑'; }
.s2-th-sortable.sort-desc .s2-sort-icon::after { content: ' ↓'; }

.s2-th-num { text-align: right; }

.s2-sort-icon {
  color: var(--s2-border);
  font-size: 10px;
}

.s2-th-sortable.sort-asc .s2-sort-icon,
.s2-th-sortable.sort-desc .s2-sort-icon {
  color: var(--s2-primary);
}

.s2-table td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--s2-border);
  color: var(--s2-text);
  vertical-align: middle;
}

.s2-table .td-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--s2-muted);
}

.s2-table .td-pct {
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.s2-row {
  cursor: pointer;
  transition: background 150ms ease;
}

.s2-row:hover td {
  background: var(--s2-surface2);
}

.s2-row.expanded td {
  background: rgba(3,105,161,0.05);
  border-bottom-color: var(--s2-primary);
}

.s2-row .s2-expand-icon {
  display: inline-block;
  transition: transform 200ms ease;
  color: var(--s2-muted);
  font-size: 11px;
  margin-right: 6px;
}

.s2-row.expanded .s2-expand-icon {
  transform: rotate(90deg);
  color: var(--s2-primary);
}

/* Sub-row accordion */
.s2-sub-row td {
  padding: 0 !important;
  border: none !important;
}

.s2-sub-table-wrap {
  background: #F8FAFC;
  border-left: 3px solid var(--s2-primary);
  overflow: hidden;
  max-height: 0;
  transition: max-height 250ms ease;
}

.s2-sub-table-wrap.open {
  max-height: 800px;
}

.s2-sub-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.s2-sub-table th {
  background: #EFF6FF;
  padding: 8px 14px;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--s2-muted);
  border-bottom: 1px solid var(--s2-border);
  white-space: nowrap;
}

.s2-sub-table td {
  padding: 7px 14px;
  border-bottom: 1px solid rgba(226,232,240,0.8);
  color: var(--s2-text);
  vertical-align: top;
}

.s2-sub-table tr:last-child td { border-bottom: none; }

/* Status badges */
.s2-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--s2-r-chip);
  font-size: 11px;
  font-weight: 500;
  white-space: nowrap;
}

.s2-badge-tot {
  background: rgba(16,185,129,0.15);
  color: #10B981;
  border: 1px solid rgba(16,185,129,0.3);
}

.s2-badge-trung_binh {
  background: rgba(245,158,11,0.15);
  color: #F59E0B;
  border: 1px solid rgba(245,158,11,0.3);
}

.s2-badge-thap {
  background: rgba(239,68,68,0.15);
  color: #EF4444;
  border: 1px solid rgba(239,68,68,0.3);
}

.s2-badge-chua_bc {
  background: rgba(100,116,139,0.1);
  color: #64748B;
  border: 1px solid rgba(100,116,139,0.25);
}

/* ---------- Progress bar ---------- */
.s2-progress-bar {
  height: 4px;
  background: var(--s2-surface2);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 3px;
}

.s2-progress-fill {
  height: 100%;
  border-radius: 2px;
  transition: width 400ms ease;
}

/* ---------- Section IV + V ---------- */
.s2-bottom-row {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 16px;
}

/* Attention card */
.s2-attention-card {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.s2-attention-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.s2-attention-subtitle {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--s2-muted);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--s2-border);
}

.s2-attention-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 10px 12px;
  border-radius: var(--s2-r-chip);
  border: 1px solid var(--s2-border);
  background: var(--s2-surface2);
  transition: border-color 150ms ease;
}

.s2-attention-item:hover {
  border-color: var(--s2-primary);
}

.s2-attention-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.s2-attention-idx {
  font-size: 11px;
  font-weight: 700;
  color: var(--s2-primary);
  min-width: 16px;
}

.s2-attention-label {
  font-size: 11px;
  color: var(--s2-muted);
  font-weight: 500;
}

.s2-attention-detail {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding-left: 24px;
}

.s2-attention-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--s2-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.s2-attention-val {
  font-size: 11px;
  font-weight: 600;
  color: var(--s2-primary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

/* Bar chart card */
.s2-bar-card {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.s2-bar-wrap {
  flex: 1;
  position: relative;
  min-height: 280px;
}

.s2-bar-wrap canvas {
  width: 100% !important;
}

.s2-legend-inline {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  color: var(--s2-muted);
}

/* ---------- Section VI: Notable ---------- */
.s2-notable {
  background: var(--s2-surface);
  border: 1px solid var(--s2-border);
  border-radius: var(--s2-r-card);
  overflow: hidden;
}

.s2-notable .s2-section-header {
  border-bottom: 1px solid var(--s2-border);
}

/* Ghi chú truncate with tooltip */
.s2-ghi-chu {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: help;
  color: var(--s2-muted);
  font-style: italic;
}

.s2-ghi-chu:hover {
  color: var(--s2-text);
  white-space: normal;
  overflow: visible;
}

/* Tinh hinh truncate */
.s2-tinh-hinh {
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: help;
}

/* ---------- STT column ---------- */
.s2-th-stt {
  width: 44px;
}

/* ---------- Empty state ---------- */
.s2-empty {
  text-align: center;
  padding: 32px;
  color: var(--s2-muted);
  font-size: 13px;
}

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .s2-kpi {
    grid-template-columns: repeat(3, 1fr);
  }
  .s2-bottom-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .s2-charts-row {
    grid-template-columns: 1fr;
  }
  .s2-kpi {
    grid-template-columns: repeat(2, 1fr);
  }
  .s2-header {
    padding: 10px 16px;
  }
  .s2-main {
    padding: 14px 16px 32px;
  }
  .s2-search {
    width: 160px;
  }
  .s2-search:focus {
    width: 200px;
  }
}

@media (max-width: 600px) {
  .s2-kpi {
    grid-template-columns: 1fr 1fr;
  }
  .s2-kpi-value {
    font-size: 20px;
  }
  .s2-chart-body {
    flex-direction: column;
    align-items: flex-start;
  }
}