/* ==========================================================================
   Alpha Farm — PWA Báo cáo Quản lý (apps/management-pwa/src/styles/main.css)
   Tuân thủ DESIGN.md, 02_LUONG_NGUOI_DUNG_VA_UI.md & Impeccable Craft Floor
   ========================================================================== */

:root {
  --bg-canvas: #F5F7F5;
  --bg-surface: #FFFFFF;
  --bg-soft: #EDF4ED;
  --text-main: #25332D;
  --text-muted: #626E67;
  --brand-primary: #286449;
  --brand-primary-hover: #1E4D38;
  --border-subtle: #DFE5E0;
  --warning: #80530D;
  --danger: #A43E32;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;

  --font-sans: "Avenir Next", "Segoe UI", sans-serif;
  --fs-display: 30px;
  --fs-section: 18px;
  --fs-body: 14px;
  --fs-label: 13px;
  --fs-input-mobile: calc(14px + 2px);
  --bottom-nav-height: 68px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-canvas);
  -webkit-text-size-adjust: 100%;
  caret-color: var(--brand-primary);
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-canvas);
  color: var(--text-main);
  font-size: 14px;
  overflow-x: clip;
  min-height: 100dvh;
}

::selection {
  background-color: var(--brand-primary);
  color: #FFFFFF;
}

:focus-visible {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-canvas);
}

::-webkit-scrollbar-thumb {
  background: var(--border-subtle);
  border-radius: 6px;
}

/* Skip link for keyboard & screen readers */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  z-index: 2000;
  background: var(--brand-primary);
  color: #FFFFFF;
  padding: 10px 16px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
}

.skip-link:focus {
  left: 12px;
}

/* Tabular numbers & text helpers */
.num-tabular,
.num-cell {
  font-variant-numeric: tabular-nums;
}

.num-cell {
  text-align: right;
  white-space: nowrap;
}

.text-muted {
  color: var(--text-muted);
}

.text-danger {
  color: var(--danger);
  font-weight: 600;
}

.text-warning {
  color: var(--warning);
  font-weight: 600;
}

.text-positive {
  color: var(--brand-primary);
  font-weight: 600;
}

.fs-section {
  font-size: 18px;
}

.fs-body {
  font-size: 14px;
}

.fs-label {
  font-size: 13px;
}

.is-hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Dev Simulation Banner (Mandatory synthetic data disclosure for M01) */
.dev-sim-banner {
  background-color: var(--bg-soft);
  border-bottom: 1px solid var(--warning);
  padding: 8px 16px;
  font-size: 13px;
  color: var(--text-main);
}

.dev-sim-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 8px;
}

.dev-sim-header-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.dev-sim-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--warning);
  min-width: 0;
  flex: 1;
  overflow-wrap: anywhere;
}

.dev-sim-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  width: 100%;
}

.dev-sim-select {
  min-height: 44px;
  width: 100%;
  min-width: 0;
  font-size: var(--fs-input-mobile);
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-family: inherit;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* App Shell Layout */
.app-shell {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  padding-bottom: calc(var(--bottom-nav-height) + env(safe-area-inset-bottom, 0px) + 16px);
}

.top-app-bar {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  padding: 12px 16px;
  position: sticky;
  top: 0;
  z-index: 40;
}

.top-app-bar-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background-color: var(--brand-primary);
  color: #FFFFFF;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}

.brand-titles {
  min-width: 0;
}

.brand-name {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand-subtitle {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.top-bar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Workspace Body (Desktop Sidebar + Main Content) */
.workspace-body {
  display: flex;
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.desktop-sidebar {
  display: none;
  width: 248px;
  flex-shrink: 0;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-subtle);
  padding: 16px 12px;
}

.sidebar-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-nav-btn {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  border-radius: 6px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-main);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.sidebar-nav-btn:hover {
  background-color: var(--bg-soft);
}

.sidebar-nav-btn.is-active {
  background-color: var(--brand-primary);
  color: #FFFFFF;
}

.sidebar-divider {
  height: 1px;
  background-color: var(--border-subtle);
  margin: 12px 0;
}

.main-viewport {
  flex: 1;
  min-width: 0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Buttons & Tap Targets (>= 44x44px) */
.btn-primary,
.btn-secondary,
.btn-ghost,
.btn-danger,
.btn-touch {
  min-height: 44px;
  min-width: 44px;
  padding: 8px 12px;
  border-radius: 6px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 120ms ease, border-color 120ms ease;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #FFFFFF;
  border: 1px solid var(--brand-primary);
}

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

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background-color: var(--bg-soft);
}

.btn-danger {
  background-color: var(--bg-surface);
  color: var(--danger);
  border: 1px solid var(--danger);
}

/* Inputs (>= 16px via CSS variable to prevent iOS zoom) */
.input-field,
.select-field {
  min-height: 44px;
  width: 100%;
  padding: 8px 12px;
  font-size: var(--fs-input-mobile);
  font-family: inherit;
  color: var(--text-main);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
}

/* Cards & Panels (Single elevation method: 1px border, no stacked heavy shadow) */
.panel-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px;
}

.panel-header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.panel-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-main);
}

.panel-subtitle {
  margin: 4px 0 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

/* Context & Filter Bar (Top of S01/S02/S03) */
.context-bar {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.context-top-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
}

.context-meta {
  min-width: 0;
  width: 100%;
}

.context-source-line {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.context-period-line {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

.filter-chips-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 4px 12px;
  background-color: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-main);
  font-weight: 500;
}

/* Status Pills & Callout Boxes (No thick border-left!) */
.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
  color: var(--text-main);
}

.status-pill.tone-positive {
  background-color: var(--bg-soft);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}

.status-pill.tone-warning {
  background-color: var(--bg-surface);
  border-color: var(--warning);
  color: var(--warning);
}

.status-pill.tone-danger {
  background-color: var(--bg-surface);
  border-color: var(--danger);
  color: var(--danger);
}

.callout-box {
  padding: 12px 16px;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background-color: var(--bg-canvas);
  font-size: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.callout-box.tone-warning {
  background-color: var(--bg-surface);
  border-color: var(--warning);
  color: var(--text-main);
}

.callout-box.tone-danger {
  background-color: var(--bg-surface);
  border-color: var(--danger);
  color: var(--text-main);
}

.callout-box.tone-soft {
  background-color: var(--bg-soft);
  border-color: var(--brand-primary);
  color: var(--text-main);
}

/* S01 — Primary & Secondary KPIs */
.primary-kpi-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--brand-primary);
  border-radius: 8px;
  padding: 16px;
}

.primary-kpi-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.primary-kpi-title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
}

.primary-kpi-main-row {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.primary-kpi-number {
  font-size: 30px;
  font-weight: 650;
  line-height: 1.25;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
  word-break: break-word;
}

.primary-kpi-sub-breakdown {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.primary-kpi-comparison {
  margin-top: 12px;
  padding: 12px;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  font-size: 14px;
}

.secondary-kpi-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.kpi-stat-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px;
}

.kpi-stat-label {
  margin: 0;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
}

.kpi-stat-value {
  margin-top: 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main);
  font-variant-numeric: tabular-nums;
}

.kpi-stat-note {
  margin-top: 4px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Charts Layout (Stacked on Mobile, 3 columns side-by-side on Desktop >= 1200px) */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.chart-wrapper {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: var(--text-muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch {
  width: 12px;
  height: 12px;
  border-radius: 6px;
  display: inline-block;
}

.swatch-primary {
  background-color: var(--brand-primary);
}

.swatch-dashed {
  background-color: var(--text-muted);
}

.swatch-warning {
  background-color: var(--warning);
}

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

.svg-responsive-box {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-canvas);
  padding: 8px;
}

.svg-responsive-box svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-touch-readout {
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 12px;
  font-size: 13px;
}

.readout-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
}

.readout-value {
  font-weight: 600;
  color: var(--brand-primary);
  font-size: 14px;
}

.readout-sub {
  margin-top: 4px;
  color: var(--text-muted);
}

.chart-point-strip {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chart-point-chip {
  min-height: 44px;
  min-width: 44px;
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-surface);
  color: var(--text-main);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
}

.chart-point-chip.is-active {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #FFFFFF;
}

/* Donut & Horizontal Signed Bar Fallback */
.donut-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.donut-legend-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.donut-legend-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-canvas);
}

.donut-swatch {
  width: 14px;
  height: 14px;
  border-radius: 6px;
  margin-top: 4px;
  flex-shrink: 0;
}

.donut-legend-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  flex: 1;
}

.donut-legend-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  overflow-wrap: anywhere;
}

.donut-legend-numbers {
  font-size: 13px;
  color: var(--text-muted);
}

.signed-bars-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.signed-bar-row {
  padding: 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  background-color: var(--bg-canvas);
}

.signed-bar-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
}

.signed-bar-label {
  overflow-wrap: anywhere;
}

.signed-bar-track {
  margin-top: 8px;
  height: 10px;
  width: 100%;
  background-color: var(--border-subtle);
  border-radius: 6px;
  overflow: hidden;
}

.signed-bar-fill.is-positive {
  height: 100%;
  background-color: var(--brand-primary);
}

.signed-bar-fill.is-negative {
  height: 100%;
  background-color: var(--danger);
}

.signed-bar-meta {
  margin-top: 8px;
  font-size: 13px;
}

.privacy-scope-note {
  padding: 8px 12px;
  background-color: var(--bg-soft);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  font-size: 13px;
  color: var(--text-main);
}

/* Data Tables & Responsive Card Lists */
.chart-accessible-table-wrap,
.table-scroll-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background-color: var(--bg-surface);
}

.data-table caption {
  text-align: left;
  padding: 8px 12px;
  font-weight: 600;
  font-size: 13px;
  color: var(--text-muted);
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th,
.data-table td {
  padding: 12px;
  border-bottom: 1px solid var(--border-subtle);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background-color: var(--bg-canvas);
  font-weight: 600;
  color: var(--text-main);
}

/* Entity List Cards (Customers S02 & Documents S03) */
.entity-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.entity-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.entity-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.entity-title {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  overflow-wrap: anywhere;
}

.entity-amount {
  font-size: 18px;
  font-weight: 600;
  color: var(--brand-primary);
  font-variant-numeric: tabular-nums;
}

.entity-meta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Segmented Basis Selector (S03 Documents) */
.segment-group {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  background-color: var(--bg-canvas);
  padding: 4px;
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
}

.segment-btn {
  min-height: 44px;
  padding: 8px;
  border: 1px solid transparent;
  border-radius: 6px;
  background: transparent;
  color: var(--text-main);
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
}

.segment-btn.is-active {
  background-color: var(--brand-primary);
  color: #FFFFFF;
}

/* Skeleton Loader (Stable Dimensions, No Fake 0 VND) */
.skeleton-block {
  background: linear-gradient(90deg, var(--border-subtle) 25%, var(--bg-soft) 50%, var(--border-subtle) 75%);
  background-size: 200% 100%;
  border-radius: 6px;
  min-height: 24px;
}

@media (prefers-reduced-motion: no-preference) {
  .skeleton-block {
    animation: pulse-shimmer 1.6s infinite linear;
  }
}

@keyframes pulse-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Bottom Navigation (Mobile/Tablet < 1024px: 4 items with clear text labels) */
.mobile-bottom-nav {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.bottom-nav-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  max-width: 640px;
  margin: 0 auto;
}

.bottom-nav-btn {
  min-height: var(--bottom-nav-height);
  padding: 8px 4px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
}

.bottom-nav-btn.is-active {
  color: var(--brand-primary);
  font-weight: 600;
}

.bottom-nav-icon-wrap {
  position: relative;
  display: inline-flex;
}

.unread-dot {
  position: absolute;
  top: -4px;
  right: -8px;
  min-width: 18px;
  height: 18px;
  padding: 0 4px;
  border-radius: 6px;
  background-color: var(--danger);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Bottom Sheet Modal (Filters) */
.bottom-sheet-backdrop {
  position: fixed;
  inset: 0;
  z-index: 80;
  background-color: rgba(37, 51, 45, 0.48);
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.bottom-sheet-dialog {
  width: 100%;
  max-width: 640px;
  max-height: 88dvh;
  overflow-y: auto;
  background-color: var(--bg-surface);
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 -8px 28px rgba(37, 51, 45, 0.16);
  padding: 16px 16px calc(16px + env(safe-area-inset-bottom, 0px));
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.form-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-main);
}

/* Privacy / Security Full-Screen Mask Overlay (Hidden tab / Offline / 401) */
.privacy-mask-overlay {
  position: fixed;
  inset: 0;
  z-index: 120;
  background-color: var(--bg-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.privacy-mask-card {
  width: 100%;
  max-width: 460px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Responsive Breakpoints */
@media (min-width: 640px) {
  .dev-sim-controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .context-top-row {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .context-meta {
    flex: 1;
    width: auto;
  }

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

@media (min-width: 1024px) {
  .dev-sim-controls {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .app-shell {
    padding-bottom: 24px;
  }

  .desktop-sidebar {
    display: block;
  }

  .mobile-bottom-nav {
    display: none;
  }

  .main-viewport {
    padding: 24px 32px;
  }
}

@media (min-width: 1200px) {
  .charts-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }
}