:root {
  color-scheme: dark;
  --canvas: #0b1020;
  --panel: #121a2d;
  --panel-border: #2b3858;
  --text: #e8eefc;
  --muted: #9aa9c7;
  --accent: #77bdfb;
  --link: #7c8caf;
  --node: #8fd3ff;
  --selected: #f9c74f;
  --danger: #ff7a90;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 980px;
  margin: 0;
  background: radial-gradient(circle at 40% -20%, #1c3159, var(--canvas) 55%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button,
select,
input {
  font: inherit;
}

.app-shell {
  max-width: 1680px;
  min-height: 100vh;
  margin: 0 auto;
  padding: 24px;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 6px;
  font-size: 2rem;
  letter-spacing: -0.035em;
}

h2 {
  margin-bottom: 12px;
  font-size: 0.88rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.subtitle,
.legend-section p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

button,
select {
  border: 1px solid var(--panel-border);
  border-radius: 7px;
  background: #17233d;
  color: var(--text);
  cursor: pointer;
}

button {
  min-width: 42px;
  padding: 8px 12px;
}

button:hover,
select:hover {
  border-color: var(--accent);
  background: #1d2d4e;
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 2px solid var(--selected);
  outline-offset: 2px;
}

.controls {
  display: grid;
  grid-template-columns: auto auto auto minmax(250px, 1fr) auto auto;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  padding: 12px;
  border: 1px solid var(--panel-border);
  border-radius: 10px;
  background: rgba(18, 26, 45, 0.9);
}

#timeline {
  width: 100%;
  accent-color: var(--accent);
}

#date-label {
  min-width: 96px;
  color: var(--accent);
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
}

.speed-control {
  display: flex;
  align-items: center;
  gap: 7px;
  color: var(--muted);
  font-size: 0.85rem;
}

.speed-control select {
  padding: 6px;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 18px;
}

.chart-panel,
.side-panel {
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  background: rgba(18, 26, 45, 0.9);
}

.chart-panel {
    position: relative;
    min-height: 720px;
    overflow: hidden;
    align-self: stretch;
}

#graph {
    display: block;
    width: 100%;
    height: 100%;
    min-height: 720px;
    cursor: grab;
}

#graph:active {
  cursor: grabbing;
}

.side-panel {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.side-panel section {
  padding: 18px;
  border-bottom: 1px solid var(--panel-border);
}

.side-panel section:last-child {
  border-bottom: 0;
}

.stats {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 7px 12px;
  margin: 0;
  font-size: 0.84rem;
}

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

.stats dd {
  margin: 0;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.selection {
  min-height: 70px;
  font-size: 0.86rem;
  line-height: 1.5;
}

.selection.empty {
  color: var(--muted);
}

.selection .ticker {
  color: var(--selected);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.1rem;
  font-weight: 700;
}

.selection ul {
  max-height: 270px;
  margin: 10px 0 0;
  padding-left: 19px;
  overflow-y: auto;
  color: var(--muted);
}

.selection li {
  margin-bottom: 4px;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 10px 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.toggle-row input {
  accent-color: var(--accent);
}

.parameters {
  margin-top: 12px !important;
  color: var(--accent) !important;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem !important;
}

.hull {
  fill-opacity: 0.12;
  stroke-opacity: 0.42;
  stroke-width: 1.5px;
  pointer-events: none;
}

.link {
  stroke: var(--link);
  stroke-linecap: round;
}

.node circle {
  fill: var(--node);
  stroke: #d6f0ff;
  stroke-width: 0.7px;
}

.node.connected circle {
  stroke-width: 1.3px;
}

.node.selected circle {
  fill: var(--selected);
  stroke: #fff6d2;
  stroke-width: 2.5px;
}

.node.neighbor circle {
  fill: #edb1ff;
  stroke: #fff;
  stroke-width: 1.8px;
}

.node.dimmed {
  opacity: 0.16;
}

.node text {
  fill: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 10px;
  pointer-events: none;
  text-anchor: middle;
}

.link.dimmed {
  opacity: 0.05;
}

.link.incident {
  stroke: var(--selected);
  stroke-opacity: 0.95;
}

.tooltip {
  position: absolute;
  z-index: 2;
  max-width: 250px;
  padding: 8px 10px;
  border: 1px solid #53698f;
  border-radius: 7px;
  background: rgba(7, 11, 22, 0.96);
  color: var(--text);
  font-size: 0.77rem;
  line-height: 1.45;
  pointer-events: none;
}

.tooltip strong {
  color: var(--selected);
}

.error-panel {
  margin-top: 18px;
  padding: 16px;
  border: 1px solid #a43e52;
  border-radius: 10px;
  background: rgba(117, 24, 47, 0.28);
  color: #ffd9df;
  white-space: pre-wrap;
}

@media (max-width: 1150px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .side-panel {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .side-panel section {
    border-bottom: 0;
  }
}