:root {
  --bg: #f5f7fb;
  --card: rgba(255, 255, 255, 0.86);
  --card-strong: #ffffff;
  --text: #122033;
  --muted: #5d6b80;
  --border: rgba(18, 32, 51, 0.08);
  --shadow: 0 22px 48px rgba(18, 32, 51, 0.08);
  --accent: #1f7a3a;
  --accent-soft: rgba(31, 122, 58, 0.12);
  --accent-border: rgba(31, 122, 58, 0.2);
  --hero-gradient: radial-gradient(circle at top left, rgba(31, 122, 58, 0.16), transparent 40%);
}

body[data-direction="arrival"] {
  --accent: #2459a6;
  --accent-soft: rgba(36, 89, 166, 0.12);
  --accent-border: rgba(36, 89, 166, 0.2);
  --hero-gradient: radial-gradient(circle at top left, rgba(36, 89, 166, 0.18), transparent 40%);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  font-family: "Public Sans", "Segoe UI", sans-serif;
  color: var(--text);
  background:
    var(--hero-gradient),
    linear-gradient(180deg, #fbfcfe 0%, var(--bg) 100%);
}

button,
input,
select,
textarea {
  font: inherit;
}

.page-shell {
  width: min(1480px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 28px 0 48px;
}

.dashboard {
  display: grid;
  gap: 22px;
}

.panel {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 24px;
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.panel::before {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-border), transparent);
}

.hero {
  margin-bottom: 22px;
  padding: 28px;
  display: grid;
  gap: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.78)),
    var(--hero-gradient);
}

.hero-topbar {
  display: flex;
  justify-content: flex-end;
}

.hero-copy {
  max-width: 100%;
}

.eyebrow,
.section-kicker {
  margin: 0;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

h1,
h2 {
  margin: 0;
  font-family: "Space Grotesk", "Avenir Next", sans-serif;
  letter-spacing: -0.03em;
}

h1 {
  margin-top: 12px;
  font-size: clamp(2.35rem, 4vw, 4.3rem);
  line-height: 0.98;
}

h2 {
  margin-top: 6px;
  font-size: clamp(1.35rem, 2vw, 1.7rem);
  line-height: 1.08;
}

.hero-subtitle,
.panel-note,
.guide-list,
.observable-host,
.observable-host p,
.observable-host li {
  color: var(--muted);
}

.hero-subtitle {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.65;
}

.hero-question {
  display: grid;
  gap: 5px;
  margin-top: 14px;
  max-width: 72ch;
}

.hero-question-label {
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero-question-text {
  color: var(--text);
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.5;
}

.hero-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.85fr);
  gap: 24px;
  align-items: start;
}

.hero-guide {
  align-self: stretch;
  justify-self: end;
  max-width: 600px;
}

.guide-card,
.control-card {
  padding: 18px 20px;
  border: 1px solid var(--accent-border);
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(255, 255, 255, 0.74));
}

.guide-list {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding-left: 18px;
  line-height: 1.55;
}

.guide-list li::marker {
  color: var(--accent);
}

.control-card {
  display: grid;
  align-content: start;
  min-width: 280px;
  max-width: 380px;
  width: auto;
  min-height: auto;
  padding: 18px 20px;
}

.page-link-button,
.writeup-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--accent-border);
  border-radius: 999px;
  background: var(--accent);
  color: #ffffff;
  font-weight: 600;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, background-color 160ms ease;
  box-shadow: 0 10px 24px rgba(18, 32, 51, 0.12);
}

.page-link-button:hover,
.writeup-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 28px rgba(18, 32, 51, 0.14);
}

.page-link-button:focus-visible,
.writeup-button:focus-visible {
  outline: 3px solid rgba(17, 24, 39, 0.18);
  outline-offset: 2px;
}

.hero-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  flex-wrap: wrap;
}

.control-host {
  margin-top: 12px;
}

.status-pill {
  min-width: 170px;
  width: auto;
  min-height: auto;
  padding: 12px 14px;
  border: 1px solid var(--accent-border);
  border-radius: 16px;
  background: var(--accent-soft);
  display: block;
  box-shadow: none;
}

.status-label {
  display: block;
  margin-bottom: 3px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  line-height: 1;
}

.status-value {
  display: block;
  font-size: 0.96rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.2;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 18px;
}

.panel-note {
  margin: 0;
  max-width: 46ch;
  font-size: 0.96rem;
  line-height: 1.58;
}

.detail-grid {
  display: grid;
  grid-template-columns: minmax(500px, 0.49fr) minmax(0, 0.51fr);
  gap: 22px;
  align-items: start;
}

.panel--narrow {
  min-width: 0;
  overflow: visible;
}

.panel--wide-detail {
  min-width: 0;
}

.panel--wide .panel-note,
.panel--wide-detail .panel-note,
.panel--map .panel-note,
.panel--writeup .panel-note {
  max-width: 56ch;
}

.observable-host {
  min-height: 120px;
}

.observable-host--wide,
.observable-host--map,
.observable-host {
  overflow-x: auto;
  overflow-y: hidden;
}

.observable-host > * {
  max-width: 100%;
}

.observable-host svg,
.observable-host canvas,
.observable-host figure {
  display: block;
  max-width: 100%;
  height: auto;
}

#time-chart,
#top-airports-chart {
  min-height: 0;
  padding-top: 2px;
  padding-bottom: 10px;
  overflow: visible;
}

#time-chart > div,
#time-chart .observablehq--inspect,
#top-airports-chart > div,
#top-airports-chart .observablehq--inspect {
  width: 100%;
  max-width: 100%;
  overflow: visible;
}

#time-chart svg {
  width: min(100%, 920px) !important;
  max-width: 920px !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
}

#top-airports-chart svg {
  width: min(100%, 620px) !important;
  max-width: 620px !important;
  height: auto !important;
  display: block;
  margin: 0 auto;
}

.observable-host figure {
  margin: 0;
}

.observable-host .observablehq--inspect,
.observable-host p {
  margin: 0;
  line-height: 1.6;
}

.loading-state,
.error-state {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 72px;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(18, 32, 51, 0.04);
  color: var(--muted);
}

.error-state {
  color: #9f1d1d;
  background: rgba(159, 29, 29, 0.08);
}

.writeup-placeholder {
  display: grid;
  justify-items: start;
  gap: 16px;
  min-height: 160px;
  padding: 18px 20px;
  border: 1px dashed var(--accent-border);
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.55), rgba(255, 255, 255, 0.3));
}

.writeup-callout {
  margin: 0;
  max-width: 64ch;
  color: var(--muted);
  line-height: 1.65;
}

.page-shell--document {
  max-width: 1040px;
}

.document-hero .hero-copy,
.document-panel {
  max-width: none;
}

.writeup-content {
  color: var(--muted);
  line-height: 1.75;
}

.writeup-content h3,
.writeup-content h4 {
  color: var(--text);
  font-family: "Space Grotesk", "Avenir Next", sans-serif;
  letter-spacing: -0.02em;
}

.writeup-content h3 {
  margin: 36px 0 12px;
  font-size: 1.4rem;
}

.writeup-content h4 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.writeup-content p,
.writeup-content ul {
  margin: 0 0 16px;
}

.writeup-content hr {
  margin: 22px 0;
  border: 0;
  border-top: 1px solid var(--border);
}

.writeup-content a {
  color: var(--accent);
}

.writeup-content code {
  padding: 0.1em 0.35em;
  border-radius: 6px;
  background: rgba(18, 32, 51, 0.06);
  color: var(--text);
  font-size: 0.94em;
}

.writeup-links {
  padding-left: 18px;
}

.writeup-links li::marker {
  color: var(--accent);
}

.writeup-content > :first-child {
  margin-top: 0;
}

.writeup-content > h3:first-child {
  margin-top: 0;
}

.writeup-content > :last-child {
  margin-bottom: 0;
}

.document-footer {
  display: flex;
  justify-content: flex-end;
  margin-top: 28px;
}

#time-chart #play-button {
  padding: 8px 14px !important;
  border: 1px solid var(--accent-border) !important;
  border-radius: 999px !important;
  background: var(--card-strong) !important;
  color: var(--text);
  box-shadow: 0 10px 20px rgba(18, 32, 51, 0.08);
}

#time-chart #range-label,
#top-airports-chart #selected-label {
  color: var(--text) !important;
}

#comparison-chart svg {
  font-size: 14px;
}

#map-chart {
  display: flex;
  justify-content: center;
  overflow-x: auto;
}

#map-chart svg {
  display: block;
  margin: 0 auto;
  max-width: 100%;
  height: auto;
}

#direction-toggle button:focus-visible,
#time-chart #play-button:focus-visible {
  outline: 3px solid rgba(17, 24, 39, 0.18);
  outline-offset: 2px;
}

@media (max-width: 1180px) {
  .hero-intro,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .hero-guide {
    justify-self: stretch;
    max-width: none;
  }

  .hero-meta {
    flex-wrap: wrap;
  }

  .panel-head {
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100vw - 20px, 1480px);
    padding: 18px 0 28px;
  }

  #time-chart,
  #top-airports-chart {
    overflow-x: visible;
    overflow-y: visible;
  }

  #time-chart svg,
  #top-airports-chart svg {
    width: 100% !important;
  }

  .panel,
  .hero {
    padding: 18px;
    border-radius: 20px;
  }

  .hero {
    gap: 16px;
  }

  h1 {
    line-height: 1.02;
  }

  .hero-intro {
    grid-template-columns: 1fr;
  }

  .hero-meta {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .guide-card,
  .control-card,
  .status-pill {
    padding: 16px 16px 17px;
  }
}