/* Reset: consistent box model */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Loading overlay: full-page until dashboard data is fetched */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f4f6fb;
  transition: opacity 0.35s ease-out, visibility 0.35s ease-out;
}

.loading-overlay.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid #e1e4ee;
  border-top-color: #4a63e7;
  border-radius: 50%;
  animation: loading-spin 0.85s linear infinite;
}

.loading-text {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
  color: #6b7280;
  letter-spacing: 0.02em;
}

@keyframes loading-spin {
  to {
    transform: rotate(360deg);
  }
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'SF Pro Text',
    'Segoe UI', sans-serif;
  background: #f4f6fb;
  color: #1f2933;
  text-align: center;
}

/* --- Site header: dark blue with logo area (angled panel) and nav --- */
.site-header {
  display: flex;
  align-items: stretch;
  min-height: 64px;
  position: sticky;
  top: 0;
  z-index: 10;
  text-align: left;
}

/* Logo area: dark blue with radial gradients; contains clipped white panel */
.header-logo-area {
  position: relative;
  flex: 0 0 28%;
  max-width: 320px;
  background: #1a2f4a;
  background-image:
    radial-gradient(circle at 15% 25%, rgba(100, 180, 255, 0.2) 0%, transparent 35%),
    radial-gradient(circle at 60% 70%, rgba(80, 160, 240, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(120, 200, 255, 0.12) 0%, transparent 30%),
    radial-gradient(circle at 25% 80%, rgba(90, 170, 245, 0.18) 0%, transparent 38%);
}

/* White angled panel (clip-path) holding the logo image */
.header-logo-panel {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 100%;
  max-width: 280px;
  background: #ffffff;
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
  display: flex;
  align-items: center;
  padding-left: 1.5rem;
  padding-right: 2rem;
}

.header-logo-img {
  /* Logo image: constrained height, contain fit */
  height: 44px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  display: block;
}

/* Nav bar: fills remaining header, PoC notice + links */
.header-nav {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 2rem;
  padding: 0 2rem;
  background: #1a2f4a;
}

.header-poc-notice {
  color: rgba(255, 255, 255, 0.92);
  font-size: 0.85rem;
  font-style: italic;
  margin-right: auto;
}

.header-link {
  /* Nav link style */
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.header-link:hover {
  text-decoration: underline;
}

.header-chevron {
  font-size: 0.6em;
  opacity: 0.9;
}

/* --- Main content area --- */
.page {
  max-width: 1120px;
  margin: 1.75rem auto 3rem;
  padding: 0 1.5rem 3rem;
}

/* Page title row: logo (parallelogram) + "At a Glance" + icon + "The Canadian iMicroSeq Data Portal" */
.page-title {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

/* White parallelogram panel for logo to the left of "At a Glance" */
.page-title-logo {
  background: #ffffff;
  clip-path: polygon(8% 0, 100% 0, 92% 100%, 0 100%);
  padding: 0.5rem 1.25rem 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.page-title-logo-img {
  height: 2.5rem;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
}

.page-title-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.page-title-icon svg {
  width: 2.25rem;
  height: 2.25rem;
  color: #c41e3a;
}

.page-title-text {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 1.85rem);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #111827;
  line-height: 1.2;
}

.page-title-subtext {
  flex-basis: 100%;
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  color: #6b7280;
  text-align: center;
}

.section-divider {
  border: 0;
  height: 0;
  border-top: 1px solid #d7deef;
  margin: 2.5rem 0;
}

/* Lazy-loaded sections: initially hidden, fade/slide in when in viewport (app.js IntersectionObserver) */
.lazy-section {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* --- Hero summary cards (4-column grid) --- */
.hero-cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.hero-card {
  /* Single summary card: label, value (animated in app.js), subtext */
  background: #ffffff;
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  border: 1px solid #e1e4ee;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.03);
  text-align: center;
}

.hero-label {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #7b8794;
  margin-bottom: 0.5rem;
}

.hero-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 0.25rem;
}

.hero-subtext {
  font-size: 0.8rem;
  color: #9ca3af;
}

/* --- Chart panels (growth, breakdown, coverage) --- */
.panel {
  background: #ffffff;
  border-radius: 14px;
  padding: 1.5rem 1.75rem 1.5rem;
  border: 1px solid #e1e4ee;
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.04);
}

.panel-wide {
  /* Full-width panel for coverage map */
  margin-bottom: 1.75rem;
}

.panel-header {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  text-align: center;
}

.panel-header h2 {
  /* Panel title */
  font-size: 1rem;
  margin: 0;
  font-weight: 600;
}

.panel-subtitle {
  font-size: 0.8rem;
  color: #9ca3af;
}

/* Coverage map container (Leaflet fills this) */
.chart-large {
  width: 100%;
  height: 420px;
  min-height: 420px;
  position: relative;
}

/* Leaflet marker tooltip styling */
.coverage-tooltip {
  font-size: 0.8rem;
  padding: 0.35rem 0.5rem;
  background: #ffffff !important;
  color: #1f2933;
  border: 1px solid #e1e4ee;
  border-radius: 6px;
}

.chart-medium {
  height: 220px;
  width: 100%;
}

/* Two-column grid for growth + breakdown panels */
.panel-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

/* --- Explore section: kicker, subtitle, axis selects, chart, CTAs --- */
.explore-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin: 0 auto 1.25rem;
  text-align: center;
  max-width: 980px;
}

.explore-kicker {
  /* "Explore" badge + "Inside the iMicroSeq Data Portal" */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
}

.explore-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1a2f4a;
  background: #dbeafe;
  border: 1px solid #bfdbfe;
}

.explore-kicker-text {
  /* Main explore heading text */
  font-size: 1.25rem;
  font-weight: 700;
  color: #111827;
  letter-spacing: 0.01em;
}

.explore-subtitle {
  margin: 0;
  font-size: 0.95rem;
  color: #6b7280;
  line-height: 1.35;
}

.explore-panel {
  background: linear-gradient(180deg, rgba(26, 47, 74, 0.06), rgba(255, 255, 255, 0));
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  border-top: 1px solid #d7deef;
  box-sizing: border-box;
}

.explore-content {
  /* Wrapper for chart area + action buttons */
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  width: 100%;
}

.explore-chart-area {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  width: 100%;
}

/* Row of dropdowns: Plot type, X axis, Segment By */
.axis-selects {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 1.5rem;
}

.axis-selects .field-select.hidden {
  display: none;
}

/* Single dropdown label + select (custom arrow via background) */
.field-select {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  text-align: center;
}

.field-select .label {
  color: #4b5563;
}

.field-select select {
  min-width: 200px;
  border-radius: 999px;
  border: 1px solid #d1d5db;
  padding: 0.4rem 1.75rem 0.4rem 0.9rem;
  font: inherit;
  background: #ffffff url("data:image/svg+xml,%3Csvg viewBox='0 0 20 20' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M5 7L10 12L15 7' stroke='%239CA3AF' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")
    no-repeat right 0.65rem center/12px 12px;
  appearance: none;
  cursor: pointer;
}

.field-select select:focus {
  outline: 2px solid #4a63e7;
  outline-offset: 1px;
}

/* Explore Vega chart container */
.sample-chart {
  width: 100%;
  min-width: 280px;
  height: 640px;
}

/* Viral loads panel: full width like explore-panel */
.viral-load-panel {
  background: linear-gradient(180deg, rgba(26, 47, 74, 0.06), rgba(255, 255, 255, 0));
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  padding-top: 1.5rem;
  padding-bottom: 2rem;
  border-top: 1px solid #d7deef;
  box-sizing: border-box;
}

.viral-load-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  width: 100%;
}

/* Viral loads dropdowns: three rows */
.viral-load-filters {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}
.viral-filter-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  gap: 0.75rem 1.25rem;
}
.viral-load-filters .viral-field-select select {
  width: 160px;
  min-width: 160px;
  box-sizing: border-box;
  border-radius: 999px;
  padding: 0.35rem 1.5rem 0.35rem 0.6rem;
  font-size: 0.8rem;
}

.viral-load-err-detail {
  margin-top: 0.5em;
  font-size: 0.9em;
  opacity: 0.85;
}

.viral-all-filter-warning {
  margin: 0.35rem 0 0;
  font-size: 0.95rem;
  font-weight: 700;
  color: #92400e;
  line-height: 1.4;
  max-width: 52rem;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.viral-all-filter-warning strong {
  font-weight: 800;
}

.viral-load-chart {
  width: 100%;
  min-width: 280px;
  min-height: 640px;
}

/* Date range: single dual-thumb slider, bottom centered */
.viral-date-range-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin-bottom: 0.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid #e5e7eb;
}
.viral-chart-toggles {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 1rem 1.5rem;
}
.viral-date-range-wrap.hidden {
  display: none;
}
.viral-date-calendar-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  gap: 1rem 1.5rem;
  width: 100%;
  max-width: 480px;
}
.viral-date-cal-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: #4b5563;
}
.viral-date-cal-label {
  font-weight: 500;
}
.viral-date-cal-input {
  font: inherit;
  font-size: 0.9rem;
  padding: 0.35rem 0.5rem;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  background: #fff;
  color: #111827;
  min-height: 2.25rem;
  box-sizing: border-box;
}
.viral-date-cal-input:focus {
  outline: 2px solid #4a63e7;
  outline-offset: 1px;
}
.viral-show-line-toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: #4b5563;
  cursor: pointer;
  user-select: none;
}
.viral-toggle-input {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.viral-toggle-track {
  display: inline-flex;
  align-items: center;
  width: 44px;
  height: 24px;
  background: #d1d5db;
  border-radius: 12px;
  position: relative;
  transition: background-color 0.2s ease;
  flex-shrink: 0;
}
.viral-toggle-track::after {
  content: "";
  position: absolute;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s ease;
}
.viral-toggle-input:checked + .viral-toggle-track {
  background-color: #4a63e7;
}
.viral-toggle-input:checked + .viral-toggle-track::after {
  transform: translateX(20px);
}
.viral-toggle-label {
  flex: 0 0 auto;
}
.viral-date-dual-slider {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 24px;
  display: flex;
  align-items: center;
}
.viral-date-dual-slider input[type="range"] {
  position: absolute;
  width: 100%;
  height: 6px;
  margin: 0;
  padding: 0;
  pointer-events: none;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
}
.viral-date-dual-slider input[type="range"]:last-of-type {
  z-index: 1;
}
.viral-date-dual-slider input[type="range"]::-webkit-slider-thumb {
  pointer-events: auto;
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #4a63e7;
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  cursor: grab;
}
.viral-date-dual-slider input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
}
.viral-date-dual-slider input[type="range"]::-moz-range-thumb {
  pointer-events: auto;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #4a63e7;
  border: 2px solid #fff;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  cursor: grab;
}
.viral-date-dual-slider input[type="range"]::-moz-range-track {
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
}
/* Shared track behind both thumbs */
.viral-date-dual-slider::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 6px;
  background: #e5e7eb;
  border-radius: 3px;
  pointer-events: none;
}
.viral-date-dual-slider input[type="range"]:first-of-type::-webkit-slider-runnable-track,
.viral-date-dual-slider input[type="range"]:last-of-type::-webkit-slider-runnable-track {
  background: transparent;
}
.viral-date-dual-slider input[type="range"]::-moz-range-track {
  background: transparent;
}

.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;
}

.sample-caption {
  font-size: 0.75rem;
  color: #9ca3af;
  text-align: center;
}

.explore-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.explore-cta {
  padding: 0.85rem 2.2rem;
  font-size: 0.95rem;
  border-radius: 999px;
  border: 2px solid #4a63e7;
  background: transparent;
  color: #4a63e7;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: background-color 0.12s ease, color 0.12s ease, transform 0.08s ease;
}

.explore-cta:hover {
  background: #4a63e7;
  color: #ffffff;
  transform: translateY(-1px);
}

/* Primary CTA: filled blue (interactive dashboard) */
.primary-cta {
  padding: 0.85rem 2.2rem;
  font-size: 0.95rem;
  border-radius: 999px;
  border: none;
  background: #4a63e7;
  color: #ffffff;
  font-weight: 600;
  letter-spacing: 0.03em;
  box-shadow: 0 12px 25px rgba(74, 99, 231, 0.35);
  cursor: pointer;
  transition: transform 0.08s ease, box-shadow 0.08s ease,
    background-color 0.12s ease;
}

.primary-cta:hover {
  background: #4359d2;
  box-shadow: 0 16px 30px rgba(74, 99, 231, 0.45);
  transform: translateY(-1px);
}

.primary-cta:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(74, 99, 231, 0.35);
}

/* --- Responsive: fewer columns on small screens --- */
@media (max-width: 960px) {
  .hero-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .panel-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .explore-actions {
    width: 100%;
  }
}

@media (max-width: 640px) {
  /* Single-column hero cards; reduced page padding */
  .top-bar {
    padding: 0.85rem 1.25rem;
  }

  .page {
    padding: 0 1rem 2.5rem;
  }

  .hero-cards {
    grid-template-columns: minmax(0, 1fr);
  }
}