:root {
  --bg: #e9f4ff;
  --bg-deep: #d6ebff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-strong: rgba(255, 255, 255, 0.94);
  --surface-hero: linear-gradient(145deg, #0c4f88 0%, #0a2f56 55%, #071b31 100%);
  --ink: #0f2340;
  --muted: #496684;
  --line: rgba(19, 74, 126, 0.14);
  --accent: #4db3ff;
  --accent-strong: #1182d8;
  --accent-soft: rgba(77, 179, 255, 0.16);
  --accent-pale: rgba(77, 179, 255, 0.08);
  --shadow: 0 24px 72px rgba(15, 35, 64, 0.12);
  --radius-xl: 34px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(77, 179, 255, 0.32), transparent 28%),
    radial-gradient(circle at 92% 12%, rgba(17, 130, 216, 0.18), transparent 24%),
    linear-gradient(180deg, #f6fbff 0%, var(--bg) 30%, var(--bg-deep) 100%);
}

.site-shell {
  max-width: 1380px;
  margin: 0 auto;
  padding: 26px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 24px;
  align-items: center;
  padding: 40px;
  border-radius: 40px;
  background: var(--surface-hero);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero__copy {
  position: relative;
  z-index: 1;
}

.hero h1 {
  max-width: 12ch;
  margin: 0;
  color: #f5fbff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3rem, 6vw, 5.4rem);
  line-height: 0.94;
}

.eyebrow {
  margin: 0 0 12px;
  color: #9ad7ff;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.lede {
  max-width: 64ch;
  margin: 18px 0 0;
  color: rgba(245, 251, 255, 0.86);
  font-size: 1.05rem;
  line-height: 1.8;
}

.hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.badge,
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  border: 1px solid rgba(154, 215, 255, 0.22);
  background: rgba(255, 255, 255, 0.12);
  color: #f0f9ff;
  font-size: 0.93rem;
  font-weight: 700;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 320px;
}

.virus-visual {
  position: relative;
  width: min(100%, 360px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.22), transparent 22%),
    radial-gradient(circle at center, rgba(77, 179, 255, 0.26), rgba(77, 179, 255, 0.04) 58%, transparent 72%);
}

.virus-visual__core,
.virus-visual__ring,
.virus-visual__particle {
  position: absolute;
  border-radius: 50%;
}

.virus-visual__core {
  inset: 22%;
  background:
    radial-gradient(circle at 38% 38%, #dff5ff, #8fd7ff 45%, #2c8ddb 78%, #155084 100%);
  box-shadow:
    0 0 0 18px rgba(77, 179, 255, 0.08),
    0 0 90px rgba(77, 179, 255, 0.26);
}

.virus-visual__ring {
  inset: 16%;
  border: 1px solid rgba(154, 215, 255, 0.15);
}

.virus-visual__ring--2 {
  inset: 8%;
}

.virus-visual__ring--3 {
  inset: 0;
}

.virus-visual__particle {
  width: 18px;
  height: 18px;
  background: linear-gradient(180deg, #dff6ff, #64c3ff);
  box-shadow: 0 0 0 10px rgba(77, 179, 255, 0.12);
}

.virus-visual__particle--1 {
  top: 6%;
  left: 46%;
}

.virus-visual__particle--2 {
  right: 10%;
  top: 34%;
}

.virus-visual__particle--3 {
  bottom: 14%;
  left: 24%;
}

.virus-visual__particle--4 {
  top: 28%;
  left: 8%;
}

.dashboard {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
  margin-top: 22px;
}

.panel {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  box-shadow: 0 18px 54px rgba(15, 35, 64, 0.08);
  backdrop-filter: blur(18px);
}

.panel--wide {
  grid-column: 1 / -1;
}

.panel--simulation {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(233, 244, 255, 0.96)),
    var(--surface-strong);
}

.panel__header {
  margin-bottom: 18px;
}

.panel__header--split {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-start;
}

.panel h2 {
  margin: 0;
  font-size: 1.75rem;
  line-height: 1.12;
}

.panel__text,
.panel__note,
.stack-item p,
.disease-card p,
.burden-card__detail,
.source-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
}

.panel__note {
  margin-top: 16px;
  font-size: 0.95rem;
}

.fact-grid,
.disease-grid,
.burden-grid,
.variant-grid {
  display: grid;
  gap: 16px;
}

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

.fact-grid--wide,
.variant-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.disease-grid,
.burden-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.fact-card,
.disease-card,
.burden-card,
.variant-card,
.source-card,
.mini-stat,
.stack-item {
  padding: 18px;
  border: 1px solid rgba(19, 74, 126, 0.1);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
}

.fact-card {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(235, 246, 255, 0.88));
}

.fact-card__label,
.burden-card__label,
.variant-card__name,
.source-card__label,
.mini-stat__label,
.disease-card__eyebrow {
  display: block;
  color: var(--accent-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.fact-card__value,
.burden-card__value,
.mini-stat__value,
.variant-card__syndrome,
.disease-card__metric {
  display: block;
  margin-top: 10px;
  color: var(--ink);
  font-size: 1.5rem;
  line-height: 1.15;
}

.fact-card__note {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.variant-card__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
}

.variant-card__region {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 600;
}

.variant-card__syndrome {
  margin-top: 10px;
}

.variant-card__note {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.stack-list,
.sources-list {
  display: grid;
  gap: 14px;
}

.stack-item h3,
.disease-card h3 {
  margin: 0 0 8px;
  font-size: 1.18rem;
}

.disease-card__metric {
  margin-top: 14px;
  color: #0b63a9;
}

.bullet-list {
  margin: 14px 0 0;
  padding-left: 20px;
  color: var(--ink);
  line-height: 1.8;
}

.chart-shell {
  min-height: 290px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(226, 241, 255, 0.68));
  border: 1px solid rgba(19, 74, 126, 0.08);
  overflow: hidden;
}

.chart-shell--large {
  min-height: 340px;
}

.map-shell {
  display: grid;
  gap: 14px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(226, 241, 255, 0.72));
  border: 1px solid rgba(19, 74, 126, 0.08);
}

.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(240px, 0.7fr);
  gap: 18px;
  align-items: start;
}

.sweden-map-svg {
  display: block;
  width: 100%;
  height: auto;
}

.region-shape {
  stroke: rgba(15, 35, 64, 0.38);
  stroke-width: 1.2;
  cursor: pointer;
  transition: opacity 140ms ease, stroke 140ms ease, transform 140ms ease;
}

.region-shape:hover {
  opacity: 0.9;
  stroke: rgba(11, 99, 169, 0.92);
}

.region-shape--hovered {
  stroke: rgba(11, 99, 169, 0.92);
  opacity: 0.94;
}

.region-shape--selected {
  stroke: #052947;
  stroke-width: 2.4;
}

.map-sidebar {
  display: grid;
  gap: 14px;
}

.legend-card,
.map-stat-list,
.focus-card {
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(19, 74, 126, 0.1);
  background: var(--surface-strong);
}

.legend-card h3,
.map-stat-list h3,
.focus-card h3 {
  margin: 0 0 10px;
  font-size: 1rem;
}

.legend-ramp {
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(90deg, #ddf2ff 0%, #7fcfff 50%, #0f78c8 100%);
}

.legend-labels {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.88rem;
}

.map-stat-list ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.map-stat-list li {
  display: block;
}

.map-stat-list span {
  color: var(--muted);
}

.map-region-button {
  display: flex;
  width: 100%;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--ink);
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.map-region-button--active strong {
  color: #0b63a9;
}

.focus-card {
  display: grid;
  gap: 12px;
}

.focus-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.focus-card__top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.focus-card__badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(11, 99, 169, 0.12);
  color: #0b63a9;
  font-size: 0.8rem;
  font-weight: 700;
}

.focus-card__badge--soft {
  background: rgba(73, 102, 132, 0.12);
  color: var(--muted);
}

.focus-card__stats {
  display: grid;
  gap: 10px;
  margin: 0;
}

.focus-card__stats div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.focus-card__stats dt,
.focus-card__stats dd {
  margin: 0;
}

.focus-card__stats dt {
  color: var(--muted);
}

.focus-card__stats dd {
  font-weight: 700;
}

.filter-clear-button {
  justify-self: start;
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid rgba(11, 99, 169, 0.16);
  border-radius: 999px;
  background: rgba(11, 99, 169, 0.08);
  color: #0b63a9;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

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

.chart-grid-line {
  stroke: rgba(19, 74, 126, 0.12);
  stroke-width: 1;
}

.chart-axis-label {
  fill: #557390;
  font-size: 12px;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.chart-value-label {
  fill: #0b63a9;
  font-size: 12px;
  font-weight: 700;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.chart-line-label {
  fill: #0b63a9;
  font-size: 11px;
  font-weight: 700;
  font-family: "Avenir Next", "Segoe UI", sans-serif;
}

.chart-bar {
  fill: url(#bar-gradient);
}

.chart-line {
  fill: none;
  stroke: #0f8ee8;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-area {
  fill: rgba(77, 179, 255, 0.18);
}

.chart-dot {
  fill: #ffffff;
  stroke: #0f8ee8;
  stroke-width: 3;
}

.timeline-shell {
  display: grid;
  gap: 14px;
}

.timeline-axis {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.92rem;
}

.timeline-track {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  gap: 8px;
}

.timeline-item__meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
}

.timeline-item__meta span {
  color: var(--muted);
  font-size: 0.92rem;
}

.timeline-bar {
  position: relative;
  height: 18px;
  border-radius: 999px;
  background: rgba(17, 130, 216, 0.08);
  overflow: hidden;
}

.timeline-bar span {
  position: absolute;
  top: 0;
  bottom: 0;
  border-radius: 999px;
  background: linear-gradient(90deg, #7fd0ff, #0f8ee8);
}

.simulation-layout {
  display: grid;
  grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.control-stack,
.simulation-results,
.simulation-metrics {
  display: grid;
  gap: 14px;
}

.control {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
  border: 1px solid rgba(19, 74, 126, 0.1);
}

.control span {
  color: var(--muted);
  font-size: 0.92rem;
}

.control strong {
  font-size: 1.4rem;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent-strong);
}

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

.mini-stat {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(226, 241, 255, 0.84));
}

.source-card__meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: baseline;
  margin-bottom: 8px;
}

.source-card__date {
  color: var(--muted);
  font-size: 0.92rem;
}

.source-card a {
  display: inline-flex;
  margin-top: 12px;
  color: #0b63a9;
  font-weight: 700;
  text-decoration: none;
}

.source-card a:hover {
  text-decoration: underline;
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    min-height: 240px;
  }

  .dashboard,
  .fact-grid,
  .disease-grid,
  .burden-grid,
  .variant-grid,
  .map-layout,
  .simulation-layout,
  .simulation-metrics {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 780px) {
  .site-shell {
    padding: 16px;
  }

  .hero,
  .panel {
    padding: 20px;
    border-radius: 26px;
  }

  .hero h1 {
    font-size: clamp(2.5rem, 14vw, 4rem);
  }

  .panel__header--split,
  .timeline-item__meta,
  .source-card__meta {
    flex-direction: column;
    align-items: flex-start;
  }
}