/* ============================================================
   Hubbub World Hub — Design System
   Light cards-based layout, matching the mobile app Explore view
   ============================================================ */

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

:root {
  /* Background & surfaces — neutral cool palette aligned with main site */
  --bg-page: #F8F8F8;
  --bg-card: #FFFFFF;
  --bg-card-hover: #FAFAFA;
  --border-card: rgba(0,0,0,0.08);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.03);
  --shadow-card-hover: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);

  /* Text */
  --text-primary: #1A1D26;
  --text-secondary: #5A5F72;
  --text-tertiary: #9098A9;
  --text-inverse: #FFFFFF;

  /* Risk level colors (Bub API config) */
  --level-low: #34D1B6;
  --level-moderate: #FFB340;
  --level-high: #FF4040;
  --level-very-high: #300060;

  /* Accent — primaryColor from iOS app */
  --accent-primary: #0046BE;
  --accent-primary-hover: #003A9E;

  /* Card spacing */
  --card-radius: 12px;
  --card-padding: 24px;
  --card-gap: 16px;
  --page-max-width: 860px;
  --page-padding: 20px;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.5;
  min-height: 100vh;
}

/* Mesh gradient background removed — using flat --bg-page (#F8F8F8) instead.
   .hub-mesh-bg div kept as no-op for backward compatibility with existing templates. */
.hub-mesh-bg { display: none; }

a { color: var(--accent-primary); text-decoration: none; }
a:hover { color: var(--accent-primary-hover); text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

/* --- Page Layout --- */
.hub-page {
  position: relative;
  z-index: 1;
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: var(--page-padding);
  display: flex;
  flex-direction: column;
  gap: var(--card-gap);
}

/* --- Cards --- */
.hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.hub-card-header {
  padding: 16px var(--card-padding);
  border-bottom: 1px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.hub-card-header h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}
.hub-card-header .hub-card-action {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent-primary);
  white-space: nowrap;
}

.hub-card-body { padding: var(--card-padding); }

/* --- Breadcrumb --- */
.hub-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  flex-wrap: wrap;
  padding: 4px 0;
}
.hub-breadcrumb a { color: var(--text-secondary); font-weight: 500; }
.hub-breadcrumb a:hover { color: var(--accent-primary); }
.hub-breadcrumb .sep { color: var(--text-tertiary); user-select: none; }
.hub-breadcrumb .current { color: var(--text-primary); font-weight: 600; }

/* --- Hero --- */
.hub-hero {
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
}
.hub-hero-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}
.hub-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.65) 0%, rgba(0,0,0,0.1) 50%, transparent 100%);
}
.hub-hero-content {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: 20px var(--card-padding);
  color: var(--text-inverse);
}
.hub-hero-content h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 4px;
  text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.hub-hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.875rem;
  opacity: 0.9;
}
.hub-hero-badge {
  position: absolute;
  top: 16px; right: 16px;
}

/* --- Risk Level Badge --- */
.hub-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-inverse);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}
.hub-level-badge.level-low { background: var(--level-low); }
.hub-level-badge.level-moderate { background: var(--level-moderate); }
.hub-level-badge.level-high { background: var(--level-high); }
.hub-level-badge.level-very-high { background: var(--level-very-high); }

/* Inline pill variant */
.hub-level-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-inverse);
}
.hub-level-pill.level-low { background: var(--level-low); }
.hub-level-pill.level-moderate { background: var(--level-moderate); }
.hub-level-pill.level-high { background: var(--level-high); }
.hub-level-pill.level-very-high { background: var(--level-very-high); }

/* --- Risk Chips --- */
.hub-risk-chips {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 4px 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.hub-risk-chips::-webkit-scrollbar { display: none; }

.hub-risk-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: 100px;
  background: var(--bg-page);
  border: 1px solid var(--border-card);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}
.hub-risk-chip:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  text-decoration: none;
}
.hub-risk-chip.active {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
  color: var(--text-inverse);
}
.hub-risk-chip .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.hub-risk-chip .trend {
  font-size: 0.75rem;
  opacity: 0.7;
}

/* --- Section Divider --- */
.hub-section-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  padding: 8px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.hub-section-title .dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* --- Prevalence Heatmap --- */
.hub-heatmap { display: flex; flex-direction: column; gap: 8px; }

.hub-heatmap-row {
  display: flex;
  gap: 3px;
  align-items: flex-end;
}
.hub-heatmap-cell {
  flex: 1;
  min-width: 0;
  height: 36px;
  border-radius: 4px;
  position: relative;
  transition: opacity 0.15s ease;
}
.hub-heatmap-cell:first-child { border-radius: 6px 4px 4px 6px; }
.hub-heatmap-cell:last-child { border-radius: 4px 6px 6px 4px; }
.hub-heatmap-cell:hover { opacity: 0.8; }
/* Tooltip on hover */
.hub-heatmap-cell[data-tooltip]:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--text-inverse);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.6875rem;
  white-space: nowrap;
  pointer-events: none;
  z-index: 10;
}

.hub-heatmap-labels {
  display: flex;
  gap: 3px;
}
.hub-heatmap-labels span {
  flex: 1;
  min-width: 0;
  text-align: center;
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hub-heatmap-legend {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--text-tertiary);
}
.hub-heatmap-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}
.hub-heatmap-legend-swatch {
  width: 12px; height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* Current value callout */
.hub-heatmap-current {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--border-card);
  flex-wrap: wrap;
}
.hub-heatmap-current .value {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--text-primary);
}
.hub-heatmap-current .unit {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}
.hub-heatmap-current .trend-tag {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
}
.trend-tag.up { background: #FFF0F0; color: #D32F2F; }
.trend-tag.down { background: #E8F5E9; color: #388E3C; }
.trend-tag.flat { background: #F5F5F5; color: #757575; }

/* --- Summary Card --- */
.hub-summary p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
}
.hub-summary .action-box {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.action-box.level-low { background: #E0F7EF; color: #00796B; }
.action-box.level-moderate { background: #FFF8E1; color: #E65100; }
.action-box.level-high { background: #FFF0F0; color: #C62828; }
.action-box.level-very-high { background: #F3E5F5; color: #4A148C; }

/* --- Insights Grid --- */
.hub-insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.hub-insight-item {
  padding: 14px 16px;
  background: var(--bg-page);
  border-radius: 8px;
  border: 1px solid var(--border-card);
}
.hub-insight-item .label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.hub-insight-item .value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}
.hub-insight-item .sub {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

/* --- Comparison Bars --- */
.hub-comparison { display: flex; flex-direction: column; gap: 16px; }

.hub-comparison-row { display: flex; flex-direction: column; gap: 4px; }
.hub-comparison-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
}
.hub-comparison-label .name { color: var(--text-secondary); font-weight: 500; }
.hub-comparison-label .val { color: var(--text-primary); font-weight: 600; }

.hub-comparison-track {
  height: 10px;
  background: var(--bg-page);
  border-radius: 100px;
  overflow: hidden;
  position: relative;
  border: 1px solid var(--border-card);
}
.hub-comparison-fill {
  height: 100%;
  border-radius: 100px;
  transition: width 0.5s ease;
}
/* National avg marker line */
.hub-comparison-marker {
  position: absolute;
  top: -2px;
  width: 2px;
  height: calc(100% + 4px);
  background: var(--text-tertiary);
  border-radius: 1px;
  z-index: 2;
}

/* --- Map Embed --- */
.hub-map-embed {
  border-radius: 8px;
  overflow: hidden;
  background: var(--bg-page);
  border: 1px solid var(--border-card);
}
.hub-map-embed img { width: 100%; height: auto; display: block; }
.hub-map-caption {
  padding: 8px 12px;
  font-size: 0.75rem;
  color: var(--text-tertiary);
  background: var(--bg-page);
  text-align: center;
}

/* Map tabs */
.hub-map-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding: 4px 0;
  margin-bottom: 12px;
  scrollbar-width: none;
}
.hub-map-tabs::-webkit-scrollbar { display: none; }
.hub-map-tab {
  padding: 6px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-page);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}
.hub-map-tab:hover { border-color: var(--border-card); color: var(--text-primary); }
.hub-map-tab.active { background: var(--accent-primary); color: var(--text-inverse); }

/* --- Entity Grid --- */
.hub-entity-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}
.hub-entity-card {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--bg-page);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  text-decoration: none;
  color: var(--text-primary);
  transition: all 0.15s ease;
}
.hub-entity-card:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  text-decoration: none;
}
.hub-entity-card .entity-name {
  font-size: 0.875rem;
  font-weight: 600;
  flex: 1;
}

/* --- Footer / Freshness --- */
.hub-freshness {
  text-align: center;
  padding: 24px var(--card-padding);
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}
.hub-freshness .date { font-weight: 600; color: var(--text-secondary); }

/* --- CTA --- */
.hub-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--accent-primary);
  color: var(--text-inverse);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.15s ease;
  border: none;
  cursor: pointer;
}
.hub-cta:hover { background: var(--accent-primary-hover); color: var(--text-inverse); text-decoration: none; }

/* --- Web-only elements (hidden in .app.html variant for mobile app) ---
   .app.html files have <style>.hub-web-only{display:none!important}</style>
   pre-injected in <head> at generation time. No app code change needed. */
.hub-web-only { display: block; }

/* --- About Card --- */
.hub-about-card {
  margin-top: var(--card-gap);
  padding: var(--card-padding);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--card-radius);
  box-shadow: var(--shadow-card);
}

.hub-published-by {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-card);
  margin-bottom: 20px;
}
.hub-published-by a {
  color: var(--accent-primary);
  text-decoration: none;
}
.hub-published-by a:hover {
  text-decoration: underline;
}

.hub-about-body {
  font-size: 0.875rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.hub-sources {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

.hub-faq h2 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.hub-faq-item {
  border-bottom: 1px solid var(--border-card);
  padding: 12px 0;
}
.hub-faq-item:last-child {
  border-bottom: none;
}
.hub-faq-item summary {
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  line-height: 1.5;
  color: var(--text-primary);
}
.hub-faq-answer {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-top: 8px;
}
.hub-faq-answer a {
  color: var(--accent-primary);
  text-decoration: none;
}
.hub-faq-answer a:hover {
  text-decoration: underline;
}

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

@media (max-width: 768px) {
  :root {
    --card-padding: 18px;
    --page-padding: 12px;
  }
  .hub-hero-image { height: 180px; }
  .hub-hero-content h1 { font-size: 1.375rem; }
  .hub-insights-grid { grid-template-columns: repeat(2, 1fr); }
  .hub-entity-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
  :root {
    --card-padding: 16px;
    --card-gap: 12px;
    --page-padding: 8px;
  }
  .hub-hero-image { height: 150px; }
  .hub-hero-content h1 { font-size: 1.125rem; }
  .hub-hero-meta { font-size: 0.75rem; gap: 10px; }
  .hub-heatmap-current .value { font-size: 1.5rem; }
  .hub-entity-grid { grid-template-columns: 1fr; }
  .hub-insights-grid { grid-template-columns: 1fr 1fr; }
  .hub-risk-chips { gap: 6px; }
  .hub-risk-chip { padding: 6px 10px; font-size: 0.75rem; }
}

@media print {
  body { background: white; color: #111; }
  .hub-card { box-shadow: none; border: 1px solid #ddd; }
}