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

:root {
  --ink: #172026;
  --muted: #62717a;
  --line: #dce4e8;
  --paper: #ffffff;
  --wash: #f0f5f6;
  --rail: #203038;
  --green: #11866f;
  --blue: #2d6fa3;
  --amber: #c88921;
  --red: #be4141;
  --teal-soft: #edf6f4;
}

body {
  min-height: 100vh;
  background: var(--wash);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
  display: grid;
  grid-template-columns: 258px minmax(0, 1fr);
  overflow-x: hidden;
}

button,
select {
  font: inherit;
}

button {
  color: inherit;
}

.rail {
  min-height: 100vh;
  background: var(--rail);
  color: #eef5f6;
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  gap: 26px;
  position: sticky;
  top: 0;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: #eaf5f3;
  color: var(--green);
  font-weight: 800;
}

.brand strong {
  display: block;
  font-size: 16px;
}

.brand small,
.source-note small {
  color: #b8c9ce;
}

nav {
  display: grid;
  gap: 8px;
}

.nav-item {
  border: 0;
  color: #dfe9eb;
  background: transparent;
  text-align: left;
  padding: 10px 11px;
  border-radius: 6px;
  font-size: 14px;
  cursor: pointer;
}

.nav-item.active,
.nav-item:hover {
  background: rgba(255, 255, 255, 0.11);
}

.source-note {
  margin-top: auto;
  display: grid;
  gap: 6px;
  font-size: 12px;
}

.source-note span,
.eyebrow {
  color: var(--green);
  text-transform: uppercase;
  letter-spacing: 0.7px;
  font-weight: 800;
}

.source-note span,
.eyebrow {
  font-size: 12px;
}

main {
  min-width: 0;
  max-width: 100vw;
  overflow: hidden;
  padding: 24px;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

.topbar {
  display: flex;
  gap: 18px;
  justify-content: space-between;
  align-items: end;
  margin-bottom: 12px;
}

h1 {
  font-size: 30px;
  line-height: 1.1;
  margin-top: 4px;
}

.subtitle {
  color: var(--muted);
  max-width: 760px;
  margin-top: 4px;
}

.toolbar {
  display: flex;
  gap: 10px;
  align-items: end;
}

label {
  display: grid;
  gap: 5px;
  color: var(--muted);
  font-size: 12px;
}

select {
  min-width: 160px;
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--ink);
  padding: 0 10px;
}

.data-stamp {
  width: fit-content;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #f6faf9;
  color: var(--muted);
  padding: 7px 10px;
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 18px;
}

.data-stamp.loaded {
  color: var(--green);
  background: var(--teal-soft);
}

.page {
  display: none;
}

.page.active {
  display: grid;
  gap: 18px;
}

.hero-band,
.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 0.72fr);
  gap: 18px;
}

.hero-copy,
.hero-visual,
.kpi,
.panel {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.hero-copy {
  min-height: 356px;
  padding: 28px;
  display: grid;
  align-content: center;
  gap: 14px;
}

.hero-copy h2 {
  font-size: 42px;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-copy p:not(.eyebrow) {
  color: var(--muted);
  max-width: 680px;
}

.hero-visual {
  position: relative;
  min-height: 520px;
  overflow: hidden;
  background: #dfe9e9;
}

#stationMap {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.leaflet-control-attribution {
  font-size: 10px;
}

.map-marker {
  width: 34px;
  height: 34px;
  border: 3px solid #fff;
  border-radius: 50%;
  background: var(--marker-color);
  box-shadow: 0 8px 18px rgba(23, 32, 38, 0.26);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 800;
  line-height: 1;
}

.map-marker.active {
  outline: 3px solid rgba(32, 48, 56, 0.36);
  transform: scale(1.12);
}

.map-label {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 16px;
  z-index: 2;
  padding: 13px 14px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.92);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
}

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

.kpi-grid,
.mini-grid,
.weather-grid {
  display: grid;
  gap: 12px;
}

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

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

.kpi,
.mini-card,
.weather-card {
  padding: 15px;
  min-height: 112px;
  display: grid;
  align-content: space-between;
}

.mini-card,
.weather-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f9fbfb;
  gap: 8px;
}

.kpi span,
.kpi small,
.mini-card span,
.mini-card small,
.weather-card span,
.weather-card small {
  color: var(--muted);
  font-size: 12px;
}

.kpi strong {
  font-size: 31px;
  line-height: 1;
}

.mini-card strong,
.weather-card strong {
  font-size: 24px;
  line-height: 1;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
}

.panel {
  grid-column: span 4;
  min-width: 0;
}

.panel.wide {
  grid-column: span 8;
}

.page > .panel {
  grid-column: auto;
}

.hero-band > .panel,
.map-layout > .panel {
  grid-column: auto;
}

.panel-head {
  padding: 16px 16px 0;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: start;
}

.panel-head h3 {
  font-size: 17px;
}

.panel-head p {
  color: var(--muted);
  font-size: 13px;
  margin-top: 2px;
}

.badge {
  border-radius: 999px;
  background: var(--teal-soft);
  color: var(--green);
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 800;
  white-space: nowrap;
}

.ranking,
.signal-list,
.line-chart,
.donut-wrap,
.metric-list,
.detail-panel,
.alert-list,
.weather-grid {
  padding: 16px;
}

.ranking,
.signal-list,
.metric-list,
.detail-panel,
.alert-list {
  display: grid;
  gap: 12px;
}

.rank-row {
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
  cursor: pointer;
  display: grid;
  grid-template-columns: 190px minmax(0, 1fr) 92px;
  gap: 12px;
  align-items: center;
  font-size: 13px;
  border-radius: 7px;
  padding: 6px;
}

.rank-row:hover {
  background: #f5f8f9;
}

.rank-row strong,
.metric-row strong,
.detail-row strong,
.alert-card strong {
  display: block;
}

.rank-row small,
.metric-row span,
.detail-row span,
.alert-card p,
.alert-card small {
  color: var(--muted);
}

.track {
  height: 12px;
  border-radius: 999px;
  background: #e9eff1;
  overflow: hidden;
}

.fill {
  height: 100%;
  border-radius: inherit;
  background: var(--green);
}

.fill.warn { background: var(--amber); }
.fill.risk { background: var(--red); }

.value {
  text-align: right;
  font-weight: 800;
}

.signal,
.metric-row,
.detail-row,
.alert-card {
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 12px;
  display: grid;
  gap: 6px;
  background: #fff;
}

.signal strong,
.metric-row strong,
.detail-row strong,
.alert-card strong {
  font-size: 14px;
}

.signal p,
.metric-row span,
.detail-row span,
.alert-card p,
.alert-card small {
  font-size: 12px;
}

.line-chart {
  height: 340px;
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 8px;
  align-items: end;
}

.bar {
  display: grid;
  justify-items: center;
  gap: 8px;
}

.bar div {
  width: 100%;
  max-width: 38px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--blue), var(--green));
}

.bar span {
  color: var(--muted);
  font-size: 11px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  max-height: 72px;
}

.donut-wrap {
  display: grid;
  place-items: center;
  gap: 15px;
}

.donut {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: conic-gradient(var(--green) 0 25%, var(--blue) 25% 50%, var(--amber) 50% 75%, var(--red) 75% 100%);
  position: relative;
}

.donut::after {
  content: "Mix";
  position: absolute;
  inset: 42px;
  border-radius: 50%;
  background: var(--paper);
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 800;
  font-size: 13px;
}

.legend {
  width: 100%;
  display: grid;
  gap: 8px;
  font-size: 13px;
}

.legend-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.legend-row span:first-child::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 7px;
  background: var(--color);
}

.empty-state {
  grid-column: 1 / -1;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 7px;
  padding: 14px;
  font-size: 13px;
}

.error-state {
  color: var(--red);
  border-color: rgba(190, 65, 65, 0.45);
  background: rgba(190, 65, 65, 0.06);
}

@media (max-width: 1080px) {
  body {
    grid-template-columns: 1fr;
  }

  .rail {
    position: static;
    min-height: auto;
  }

  nav {
    grid-template-columns: repeat(3, minmax(120px, 1fr));
  }

  .hero-band,
  .map-layout,
  .content-grid {
    grid-template-columns: 1fr;
  }

  .panel,
  .panel.wide {
    grid-column: auto;
  }
}

@media (max-width: 720px) {
  body {
    display: block;
  }

  main {
    padding: 18px;
    max-width: 430px;
    margin: 0;
  }

  .rail,
  .topbar,
  .toolbar,
  .hero-band,
  .map-layout,
  .hero-copy,
  .hero-visual,
  .kpi-grid,
  .content-grid,
  .panel {
    min-width: 0;
    width: 100%;
    max-width: 100%;
  }

  .topbar,
  .toolbar,
  .map-label {
    display: grid;
  }

  .toolbar,
  .kpi-grid,
  .mini-grid,
  .weather-grid {
    grid-template-columns: 1fr;
  }

  select {
    width: 100%;
  }

  .data-stamp {
    width: 100%;
    border-radius: 8px;
  }

  .hero-copy {
    min-height: auto;
    padding: 22px;
  }

  .hero-visual {
    min-height: 420px;
  }

  .hero-copy h2 {
    font-size: 30px;
  }

  .rank-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .value {
    text-align: left;
  }

  nav {
    grid-template-columns: 1fr 1fr;
  }
}