:root {
  --ink: #20242a;
  --muted: #64717f;
  --line: #d9e1e8;
  --paper: #f6f8fa;
  --panel: #ffffff;
  --blue: #2364aa;
  --green: #17745f;
  --amber: #986d1d;
  --red: #a5473f;
  --point: #1f6f8b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.55;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 28px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: 1.55rem;
  line-height: 1.15;
}

h2 {
  font-size: 1.35rem;
}

h3 {
  font-size: 1rem;
}

.scope {
  color: var(--amber);
  font-weight: 800;
  white-space: nowrap;
}

.layout {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  width: min(1320px, calc(100% - 32px));
  margin: 18px auto;
}

.n-panel,
.viewer,
.details section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.n-panel {
  align-self: start;
  padding: 14px;
  position: sticky;
  top: 14px;
}

.selector-row {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  align-items: center;
  margin-bottom: 12px;
}

label {
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
}

select,
button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #ffffff;
  color: var(--ink);
  font: inherit;
}

button {
  padding: 0 12px;
  cursor: pointer;
  font-weight: 750;
}

button:hover,
select:hover {
  border-color: #9fb5c8;
}

.n-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.n-button {
  display: grid;
  align-content: center;
  justify-items: center;
  min-height: 48px;
  padding: 5px 3px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfd;
  cursor: pointer;
}

.n-button strong {
  font-size: 0.92rem;
}

.n-button span {
  color: var(--muted);
  font-size: 0.72rem;
}

.n-button.active {
  color: #ffffff;
  background: var(--blue);
  border-color: var(--blue);
}

.n-button.active span {
  color: #dceeff;
}

.viewer {
  padding: 18px;
}

.viewer-head,
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fbfcfd;
}

.stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0;
}

.stat {
  min-width: 0;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfd;
}

.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 750;
}

.stat strong {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 1.05rem;
}

.plot-wrap {
  width: 100%;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

#plot {
  display: block;
  width: 100%;
  min-height: 420px;
}

.grid-line {
  stroke: #e8edf2;
  stroke-width: 1;
}

.axis-label {
  fill: var(--muted);
  font-size: 11px;
}

.point {
  fill: var(--point);
  stroke: #ffffff;
  stroke-width: 1.5;
}

.point-label {
  fill: #25313b;
  font-size: 10px;
  paint-order: stroke;
  stroke: #ffffff;
  stroke-width: 3px;
}

.details {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  gap: 14px;
  margin-top: 14px;
}

.details section {
  padding: 14px;
}

pre {
  min-height: 132px;
  max-height: 220px;
  overflow: auto;
  margin: 12px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fafc;
  font-size: 0.88rem;
  white-space: pre-wrap;
}

dl {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px 12px;
  margin: 12px 0 0;
}

dt {
  color: var(--muted);
  font-weight: 750;
}

dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  width: min(1320px, calc(100% - 32px));
  margin: 0 auto 22px;
  color: var(--muted);
  font-size: 0.9rem;
}

a {
  color: var(--blue);
}

@media (max-width: 900px) {
  .topbar,
  footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .layout,
  .details {
    grid-template-columns: 1fr;
  }

  .n-panel {
    position: static;
  }

  .n-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

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

  #plot {
    min-height: 330px;
  }
}

@media (max-width: 520px) {
  .layout {
    width: min(100% - 20px, 1320px);
    margin-top: 10px;
  }

  .topbar {
    padding: 18px 16px;
  }

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

  .stats {
    grid-template-columns: 1fr;
  }
}