/* MeshCore Stats - Radio Observatory Design System */
/* Typography: JetBrains Mono (data) + Instrument Serif (display) + IBM Plex Sans (UI) */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=Instrument+Serif:ital@0;1&family=JetBrains+Mono:wght@300;400;500;600&display=swap');

/* ========================================
   CSS Custom Properties - Light Theme (default)
   ======================================== */
:root {
  /* Base palette - warm scientific paper */
  --bg-primary: #faf8f5;
  --bg-secondary: #f5f2ed;
  --bg-tertiary: #eae6df;
  --bg-elevated: #ffffff;

  /* Text hierarchy */
  --text-primary: #1a1915;
  --text-secondary: #5c5850;
  --text-tertiary: #8a857a;
  --text-muted: #b5b0a5;

  /* Accent - solar amber */
  --accent-primary: #d97706;
  --accent-secondary: #f59e0b;
  --accent-muted: #fcd34d;
  --accent-subtle: #fef3c7;

  /* Status indicators */
  --status-online: #15803d;
  --status-online-bg: #dcfce7;
  --status-stale: #a16207;
  --status-stale-bg: #fef9c3;
  --status-offline: #b91c1c;
  --status-offline-bg: #fee2e2;

  /* Borders and dividers */
  --border-subtle: #e8e4dc;
  --border-medium: #d4cfc4;
  --border-strong: #b5b0a5;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(26, 25, 21, 0.04);
  --shadow-md: 0 4px 12px rgba(26, 25, 21, 0.06);
  --shadow-lg: 0 8px 24px rgba(26, 25, 21, 0.08);

  /* Chart-specific */
  --chart-line: #b45309;
  --chart-area: rgba(180, 83, 9, 0.15);
  --chart-grid: #e8e4dc;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Typography scale */
  --text-xs: 0.75rem;
  --text-sm: 0.8125rem;
  --text-base: 0.9375rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.75rem;
  --text-3xl: 2.25rem;

  /* Layout */
  --sidebar-width: 360px;
  --content-max-width: 1400px;
  --border-radius: 3px;
}

/* ========================================
   Dark Theme
   ======================================== */
@media (prefers-color-scheme: dark) {
  :root {
    /* Base palette - deep observatory night */
    --bg-primary: #0f1114;
    --bg-secondary: #161a1e;
    --bg-tertiary: #1e2328;
    --bg-elevated: #252a30;

    /* Text hierarchy */
    --text-primary: #f0efe8;
    --text-secondary: #a8a598;
    --text-tertiary: #706d62;
    --text-muted: #4a473f;

    /* Accent - solar amber (slightly adjusted for dark) */
    --accent-primary: #f59e0b;
    --accent-secondary: #fbbf24;
    --accent-muted: #d97706;
    --accent-subtle: #451a03;

    /* Status indicators */
    --status-online: #4ade80;
    --status-online-bg: #14532d;
    --status-stale: #facc15;
    --status-stale-bg: #422006;
    --status-offline: #f87171;
    --status-offline-bg: #450a0a;

    /* Borders and dividers */
    --border-subtle: #252a30;
    --border-medium: #2d333a;
    --border-strong: #3d444d;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

    /* Chart-specific */
    --chart-line: #f59e0b;
    --chart-area: rgba(245, 158, 11, 0.2);
    --chart-grid: #252a30;
  }
}

/* ========================================
   Reset & Base Styles
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  min-height: 100vh;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--text-3xl); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-lg); }

.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

.serif {
  font-family: 'Instrument Serif', Georgia, serif;
}

.italic {
  font-style: italic;
}

/* Data display - tight letter spacing for numerics */
.data-value {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-weight: 500;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.data-label {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.data-unit {
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--text-tertiary);
  margin-left: 0.15em;
}

/* ========================================
   Layout - Observatory Control Panel
   ======================================== */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
}

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

/* ========================================
   Sidebar - Instrument Panel
   ======================================== */
.sidebar {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border-subtle);
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

@media (max-width: 900px) {
  .sidebar {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
  }
}

/* Site header */
.site-header {
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.site-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.site-subtitle {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Node selector */
.node-selector {
  display: flex;
  gap: var(--space-xs);
  background: var(--bg-tertiary);
  padding: var(--space-xs);
  border-radius: var(--border-radius);
}

.node-selector a {
  flex: 1;
  text-align: center;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.15s ease;
}

.node-selector a:hover {
  color: var(--text-primary);
}

.node-selector a.active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Node info card */
.node-info {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

.node-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.node-name {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: var(--text-lg);
  color: var(--text-primary);
}

.node-id {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-xs);
}

/* Status indicator */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--text-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 2px;
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.status-badge.online {
  background: var(--status-online-bg);
  color: var(--status-online);
}

.status-badge.online::before {
  background: var(--status-online);
}

.status-badge.stale {
  background: var(--status-stale-bg);
  color: var(--status-stale);
}

.status-badge.stale::before {
  background: var(--status-stale);
  animation: none;
}

.status-badge.offline {
  background: var(--status-offline-bg);
  color: var(--status-offline);
}

.status-badge.offline::before {
  background: var(--status-offline);
  animation: none;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Critical metrics - the main instruments */
.critical-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  padding-bottom: var(--space-md);
  border-top: 1px solid var(--border-subtle);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.metric-value {
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.metric-value .unit {
  font-size: var(--text-sm);
  font-weight: 300;
  color: var(--text-tertiary);
}

.metric-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Secondary metrics */
.secondary-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border-subtle);
}

.secondary-metric {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--text-sm);
}

.secondary-metric .label {
  color: var(--text-tertiary);
}

.secondary-metric .value {
  color: var(--text-primary);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}

/* Last updated */
.last-updated {
  margin-top: auto;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.last-updated time {
  display: block;
  color: var(--text-secondary);
  margin-top: var(--space-xs);
}

/* ========================================
   Main Content - Observation Charts
   ======================================== */
.main-content {
  padding: var(--space-xl);
  background: var(--bg-primary);
}

@media (min-width: 901px) {
  .main-content {
    padding: var(--space-2xl) var(--space-3xl);
  }
}

/* Period navigation */
.period-nav {
  display: flex;
  gap: var(--space-lg);
  margin-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: var(--space-md);
}

.period-nav a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-tertiary);
  text-decoration: none;
  padding-bottom: var(--space-md);
  margin-bottom: -1px;
  border-bottom: 2px solid transparent;
  transition: all 0.15s ease;
}

.period-nav a:hover {
  color: var(--text-secondary);
}

.period-nav a.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* Page title */
.page-header {
  margin-bottom: var(--space-2xl);
}

.page-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: var(--text-2xl);
  font-style: italic;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.page-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* Charts grid */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: var(--space-xl);
  align-items: stretch;
}

@media (max-width: 500px) {
  .charts-grid {
    grid-template-columns: 1fr;
  }
}

/* Chart card */
.chart-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.chart-header {
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.chart-title {
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-primary);
}

.chart-current {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--accent-primary);
  font-variant-numeric: tabular-nums;
}

.chart-image {
  display: block;
  width: 100%;
  height: auto;
}

/* SVG chart container and theme switching */
.chart-svg-container {
  position: relative;
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: #faf8f5;  /* Match matplotlib figure background (warm cream) */
}

@media (prefers-color-scheme: dark) {
  .chart-svg-container {
    background: #0f1114;  /* Match matplotlib figure background (deep night) */
  }
}

.chart-svg {
  width: 100%;
}

.chart-svg svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}

/* Light mode: show light theme, hide dark */
.chart-svg.dark-theme {
  display: none;
}

.chart-svg.light-theme {
  display: block;
}

/* Dark mode: show dark theme, hide light */
@media (prefers-color-scheme: dark) {
  .chart-svg.light-theme {
    display: none;
  }

  .chart-svg.dark-theme {
    display: block;
  }
}

/* Chart tooltip (for future JS enhancement) */
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--bg-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--border-radius);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-xs);
  box-shadow: var(--shadow-md);
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.chart-tooltip.visible {
  opacity: 1;
}

.chart-tooltip .tooltip-time {
  color: var(--text-tertiary);
  margin-bottom: var(--space-xs);
}

.chart-tooltip .tooltip-value {
  font-weight: 500;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.chart-footer {
  padding: var(--space-sm) var(--space-lg);
  background: var(--bg-secondary);
  display: flex;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.chart-stat {
  display: flex;
  gap: var(--space-xs);
}

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

.chart-stat .value {
  font-variant-numeric: tabular-nums;
}

/* Chart grouping */
.chart-group {
  margin-bottom: var(--space-2xl);
}

.chart-group-title {
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

/* ========================================
   Reports - Archive Pages
   ======================================== */
.reports-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-2xl);
}

.reports-header {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.reports-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: var(--text-2xl);
  font-style: italic;
  margin-bottom: var(--space-sm);
}

.reports-subtitle {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
}

/* Report navigation breadcrumb */
.reports-breadcrumb {
  display: flex;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--space-xl);
}

.reports-breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}

.reports-breadcrumb a:hover {
  color: var(--accent-primary);
}

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

/* Archive list */
.archive-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.archive-year {
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
}

.archive-year-title {
  font-family: 'Instrument Serif', Georgia, serif;
  font-size: var(--text-xl);
  margin-bottom: var(--space-md);
}

.archive-year-title a {
  color: var(--text-primary);
  text-decoration: none;
}

.archive-year-title a:hover {
  color: var(--accent-primary);
}

.archive-months {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
}

.archive-month {
  text-align: center;
  padding: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 2px;
  transition: all 0.15s ease;
}

.archive-month:hover {
  background: var(--accent-subtle);
  color: var(--accent-primary);
}

.archive-month.empty {
  color: var(--text-muted);
  pointer-events: none;
}

/* Data tables */
.data-table-wrapper {
  overflow-x: auto;
  margin: var(--space-lg) 0;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
}

.data-table th,
.data-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: right;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-secondary);
  position: sticky;
  top: 0;
}

.data-table th:first-child,
.data-table td:first-child {
  text-align: left;
}

.data-table td {
  color: var(--text-primary);
}

.data-table tbody tr:hover {
  background: var(--bg-secondary);
}

.data-table .highlight {
  color: var(--accent-primary);
  font-weight: 500;
}

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

/* Table column groups */
.data-table .col-group-header {
  font-size: var(--text-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 2px solid var(--border-medium);
}

/* Summary row */
.data-table tfoot td {
  font-weight: 500;
  border-top: 2px solid var(--border-medium);
  background: var(--bg-secondary);
}

/* ========================================
   Location info
   ======================================== */
.location-info {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  padding: var(--space-md);
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
}

.location-info dt {
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.location-info dd {
  color: var(--text-secondary);
  margin-bottom: var(--space-sm);
}

.location-info dd:last-child {
  margin-bottom: 0;
}

/* ========================================
   Device / Node details section
   ======================================== */
.node-details {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border-subtle);
}

.node-details-row {
  display: flex;
  justify-content: space-between;
  padding: var(--space-xs) 0;
}

.node-details-row .label {
  color: var(--text-muted);
}

.node-details-row .value {
  color: var(--text-secondary);
}

/* ========================================
   Radio configuration display
   ======================================== */
.radio-config {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xs) var(--space-md);
  font-size: var(--text-xs);
  padding: var(--space-md);
  background: var(--bg-tertiary);
  border-radius: var(--border-radius);
  margin-top: var(--space-md);
}

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

.radio-config dd {
  color: var(--text-secondary);
  text-align: right;
}

/* ========================================
   Traffic metrics - table display
   ======================================== */
.traffic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-xs);
  border-top: 1px solid var(--border-subtle);
}

.traffic-table th,
.traffic-table td {
  padding: var(--space-xs) var(--space-sm);
  text-align: right;
}

.traffic-table th:first-child,
.traffic-table td:first-child {
  padding-left: 0;
}

.traffic-table th:last-child,
.traffic-table td:last-child {
  padding-right: 0;
}

.traffic-table th[scope="row"] {
  text-align: left;
  color: var(--text-muted);
  font-weight: 400;
}

.traffic-table thead th {
  color: var(--text-muted);
  font-weight: 400;
  padding-top: var(--space-md);
  padding-bottom: var(--space-xs);
}

.traffic-table tbody tr:last-child th,
.traffic-table tbody tr:last-child td {
  padding-bottom: var(--space-md);
}

.traffic-table td {
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
  cursor: help;
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  margin-top: auto;
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  text-align: center;
}

.site-footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--accent-primary);
}

/* Site credit line */
footer.site-credit {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-top: var(--space-2xl);
  padding: var(--space-lg) 0;
  font-size: var(--text-xs);
  color: var(--text-muted);
}

footer.site-credit .separator {
  color: var(--text-muted);
}

footer.site-credit a {
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.25em;
  border-radius: 2px;
}

footer.site-credit a:hover {
  color: var(--text-secondary);
}

footer.site-credit a:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

footer.site-credit svg {
  width: 1em;
  height: 1em;
  fill: currentColor;
  flex-shrink: 0;
  vertical-align: -0.125em;
}

/* ========================================
   Utilities
   ======================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-accent {
  color: var(--accent-primary);
}

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

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

/* ========================================
   Animations - subtle load-in
   ======================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chart-card {
  animation: fadeIn 0.4s ease-out backwards;
}

.chart-card:nth-child(1) { animation-delay: 0.05s; }
.chart-card:nth-child(2) { animation-delay: 0.1s; }
.chart-card:nth-child(3) { animation-delay: 0.15s; }
.chart-card:nth-child(4) { animation-delay: 0.2s; }
.chart-card:nth-child(5) { animation-delay: 0.25s; }
.chart-card:nth-child(6) { animation-delay: 0.3s; }
.chart-card:nth-child(7) { animation-delay: 0.35s; }
.chart-card:nth-child(8) { animation-delay: 0.4s; }
.chart-card:nth-child(9) { animation-delay: 0.45s; }
.chart-card:nth-child(10) { animation-delay: 0.5s; }

/* Reduce motion if preferred */
@media (prefers-reduced-motion: reduce) {
  .chart-card {
    animation: none;
  }

  .status-badge::before {
    animation: none;
  }
}