/* =============================================================================
   Autoware Contributor Metrics — Light / Dark Theme System
   ============================================================================= */

/* =============================================================================
   Light Theme (default)
   ============================================================================= */

:root {
  --bg-primary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --border-subtle: #e2e8f0;
  --accent-cyan: #0284c7;
  --accent-coral: #dc2626;
  --accent-teal: #0d9488;
  --accent-gold: #ca8a04;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --nav-bg: rgba(241, 245, 249, 0.85);
  --pill-bg: rgba(226, 232, 240, 0.5);
  --repo-item-bg: rgba(241, 245, 249, 0.6);
  --repo-item-hover-bg: rgba(226, 232, 240, 0.8);
  --dot-grid-color: #e2e8f0;
  --glow-cyan: none;
  --glow-coral: none;
  --glow-teal: none;
  --glow-gold: none;
  --card-hover-border: rgba(2, 132, 199, 0.3);
  --card-hover-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
  --active-glow: 0 1px 4px rgba(2, 132, 199, 0.15);
  --link-hover: #0369a1;
  --nav-height: 52px;
}

/* =============================================================================
   Dark Theme
   ============================================================================= */

[data-theme="dark"] {
  --bg-primary: #0a0e17;
  --bg-card: #111827;
  --bg-card-hover: #1a2332;
  --border-subtle: #1e293b;
  --accent-cyan: #00d4ff;
  --accent-coral: #ff6b6b;
  --accent-teal: #4ecdc4;
  --accent-gold: #ffd700;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --nav-bg: rgba(10, 14, 23, 0.85);
  --pill-bg: rgba(30, 41, 59, 0.5);
  --repo-item-bg: rgba(30, 41, 59, 0.3);
  --repo-item-hover-bg: rgba(30, 41, 59, 0.6);
  --dot-grid-color: #1e293b;
  --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.3);
  --glow-coral: 0 0 20px rgba(255, 107, 107, 0.3);
  --glow-teal: 0 0 20px rgba(78, 205, 196, 0.3);
  --glow-gold: 0 0 20px rgba(255, 215, 0, 0.3);
  --card-hover-border: rgba(0, 212, 255, 0.3);
  --card-hover-shadow: 0 0 20px rgba(0, 212, 255, 0.06);
  --active-glow: 0 0 12px rgba(0, 212, 255, 0.15);
  --link-hover: #66e3ff;
}

/* =============================================================================
   Reset & Base
   ============================================================================= */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 24px);
}

body {
  font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  background-image: radial-gradient(circle, var(--dot-grid-color) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: background-color 0.3s, color 0.3s;
}

a {
  color: var(--accent-cyan);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--link-hover);
}

/* =============================================================================
   Layout
   ============================================================================= */

.dashboard-container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}

/* =============================================================================
   Header
   ============================================================================= */

.site-header {
  padding: 32px 0 24px;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.header-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.header-title span {
  color: var(--accent-cyan);
}

.header-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.github-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: border-color 0.2s, color 0.2s;
}

.github-badge:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.github-badge svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background-color 0.2s;
}

.theme-toggle:hover {
  border-color: var(--accent-cyan);
  color: var(--accent-cyan);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

.theme-toggle-label {
  display: none;
  font-size: 0.7rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 2px;
}

/* =============================================================================
   Sticky Nav
   ============================================================================= */

.sticky-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 48px;
  transition: background-color 0.3s;
}

.nav-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.nav-inner::-webkit-scrollbar {
  display: none;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  min-height: 44px;
  transition: color 0.2s, background-color 0.2s;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--pill-bg);
}

.nav-link.active {
  color: var(--accent-cyan);
  background: rgba(2, 132, 199, 0.08);
}

[data-theme="dark"] .nav-link.active {
  background: rgba(0, 212, 255, 0.08);
}

/* =============================================================================
   Sections
   ============================================================================= */

.dashboard-section {
  padding-bottom: 80px;
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.dashboard-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.section-heading {
  font-family: 'Outfit', sans-serif;
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: -16px;
  margin-bottom: 20px;
}

/* =============================================================================
   Metric Cards
   ============================================================================= */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.2s, background-color 0.3s;
}

.metric-card:hover {
  border-color: var(--card-hover-border);
  box-shadow: var(--card-hover-shadow);
  transform: translateY(-2px);
}

.metric-card .metric-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.metric-card .metric-value {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.2;
}

.metric-card .metric-value.cyan {
  color: var(--accent-cyan);
  text-shadow: var(--glow-cyan);
}

.metric-card .metric-value.coral {
  color: var(--accent-coral);
  text-shadow: var(--glow-coral);
}

.metric-card .metric-value.teal {
  color: var(--accent-teal);
  text-shadow: var(--glow-teal);
}

.metric-card .metric-value.gold {
  color: var(--accent-gold);
  text-shadow: var(--glow-gold);
}

.metric-card .metric-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Top repos list inside a card */
.top-repos-card {
  grid-column: 1 / -1;
}

.top-repos-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 8px;
  margin-top: 12px;
}

.repo-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 8px;
  background: var(--repo-item-bg);
  font-size: 0.85rem;
  transition: background 0.2s;
}

.repo-item:hover {
  background: var(--repo-item-hover-bg);
}

.repo-item .repo-rank {
  margin-right: 8px;
  min-width: 24px;
}

.repo-item .repo-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.repo-item .repo-stars {
  font-family: 'IBM Plex Mono', monospace;
  font-weight: 600;
  color: var(--accent-gold);
  margin-left: 12px;
}

/* =============================================================================
   Chart Containers
   ============================================================================= */

.chart-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 24px;
  overflow: hidden;
  transition: background-color 0.3s, border-color 0.3s;
}

/* =============================================================================
   Loading Skeleton
   ============================================================================= */

.skeleton {
  background: linear-gradient(90deg, var(--bg-card) 25%, var(--bg-card-hover) 50%, var(--bg-card) 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease-in-out infinite;
  border-radius: 12px;
}

.skeleton-chart {
  height: 400px;
  margin-bottom: 24px;
}

.skeleton-card {
  height: 90px;
}

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

/* =============================================================================
   Rankings Section
   ============================================================================= */

.rankings-controls {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  transition: background-color 0.3s, border-color 0.3s;
}

.pill-group {
  display: inline-flex;
  background: var(--pill-bg);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
}

.pill-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  min-height: 44px;
  transition: color 0.2s, background 0.2s, box-shadow 0.2s;
}

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

.pill-btn.active {
  color: var(--accent-cyan);
  background: var(--bg-card);
  box-shadow: var(--active-glow);
}

.period-select {
  padding: 8px 32px 8px 12px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  min-height: 44px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23475569' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  transition: border-color 0.2s, background-color 0.3s, color 0.3s;
}

[data-theme="dark"] .period-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
}

.period-select:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.15);
}

[data-theme="dark"] .period-select:focus {
  box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.15);
}

.rankings-updated {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* Desktop: 4-column grid */
.rankings-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ranking-column {
  min-width: 0;
}

.ranking-column-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.ranking-column-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.ranking-chart-container {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 12px;
  overflow: hidden;
  transition: background-color 0.3s, border-color 0.3s;
}

/* Mobile ranking tabs */
.ranking-tabs {
  display: none;
  margin-bottom: 16px;
}

.ranking-tab-group {
  display: flex;
  background: var(--pill-bg);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.ranking-tab-group::-webkit-scrollbar {
  display: none;
}

.ranking-tab-btn {
  flex: 1;
  padding: 10px 12px;
  border: none;
  border-radius: 8px;
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  min-height: 44px;
  white-space: nowrap;
  transition: color 0.2s, background 0.2s;
}

.ranking-tab-btn.active {
  color: var(--accent-cyan);
  background: var(--bg-card);
  box-shadow: var(--active-glow);
}

/* =============================================================================
   Footer
   ============================================================================= */

.site-footer {
  border-top: 1px solid var(--border-subtle);
  padding: 32px 0;
  margin-top: 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

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

/* =============================================================================
   Responsive
   ============================================================================= */

/* Tablet */
@media (max-width: 1200px) {
  .rankings-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dashboard-section {
    padding-bottom: 56px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .dashboard-container {
    padding: 0 16px;
  }

  .site-header {
    padding: 20px 0 16px;
  }

  .header-title {
    font-size: 1.25rem;
  }

  .sticky-nav {
    margin-bottom: 32px;
  }

  .section-heading {
    font-size: 1.25rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .top-repos-list {
    grid-template-columns: 1fr;
  }

  .dashboard-section {
    padding-bottom: 48px;
  }

  .chart-wrapper {
    padding: 12px;
    border-radius: 8px;
  }

  .rankings-controls {
    padding: 12px 16px;
  }

  .rankings-updated {
    margin-left: 0;
    width: 100%;
  }

  /* Show tabs, hide grid layout */
  .ranking-tabs {
    display: block;
  }

  .rankings-grid {
    display: block;
  }

  .ranking-column {
    display: none;
  }

  .ranking-column.active-tab {
    display: block;
  }
}

/* Small mobile */
@media (max-width: 480px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .metric-card .metric-value {
    font-size: 1.5rem;
  }

  .pill-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
  }
}

/* =============================================================================
   ApexCharts Theme Overrides (adapt to CSS variables for live switching)
   ============================================================================= */

.apexcharts-tooltip {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-primary) !important;
}

.apexcharts-tooltip-title {
  background: var(--repo-item-bg) !important;
  border-bottom: 1px solid var(--border-subtle) !important;
  color: var(--text-secondary) !important;
}

.apexcharts-xaxistooltip {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
  color: var(--text-secondary) !important;
}

.apexcharts-xaxistooltip-bottom::before,
.apexcharts-xaxistooltip-bottom::after {
  border-bottom-color: var(--border-subtle) !important;
}

.apexcharts-menu {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-subtle) !important;
}

.apexcharts-menu-item:hover {
  background: var(--bg-card-hover) !important;
}

.apexcharts-legend-text {
  color: var(--text-secondary) !important;
}

/* SVG text elements */
.apexcharts-text tspan,
.apexcharts-xaxis-label tspan,
.apexcharts-yaxis-label tspan {
  fill: var(--text-secondary) !important;
}

.apexcharts-title-text {
  fill: var(--text-primary) !important;
}

.apexcharts-gridline {
  stroke: var(--border-subtle) !important;
}

.apexcharts-xaxis line,
.apexcharts-yaxis line {
  stroke: var(--border-subtle) !important;
}

.apexcharts-ycrosshairs,
.apexcharts-xcrosshairs {
  stroke: var(--text-muted) !important;
}

.apexcharts-datalabel {
  fill: var(--text-secondary) !important;
}