:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-elevated: rgba(11, 20, 37, 0.86);
  --bg-soft: rgba(17, 26, 46, 0.8);
  --border: rgba(148, 163, 184, 0.18);
  --text: #f8fafc;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --shadow: 0 18px 60px rgba(0, 0, 0, 0.38);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.18), transparent 28%),
    radial-gradient(circle at top right, rgba(139, 92, 246, 0.14), transparent 22%),
    linear-gradient(180deg, #07111f 0%, #0b1324 100%);
  color: var(--text);
}

body {
  padding: 24px;
}

.page-shell {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero,
.panel,
.metric-card {
  background: var(--bg-elevated);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
}

.hero h1,
.panel h2 {
  margin: 0;
}

.hero-description,
.muted {
  color: var(--muted);
}

.hero-description {
  max-width: 760px;
  margin: 12px 0 0;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-start;
}

.button {
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 12px 18px;
  font: inherit;
  text-decoration: none;
  color: var(--text);
  cursor: pointer;
}

.button.ghost {
  background: rgba(15, 23, 42, 0.55);
}

.button.solid {
  background: linear-gradient(135deg, #38bdf8, #8b5cf6);
  border-color: transparent;
  color: white;
  font-weight: 600;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.metric-card {
  padding: 18px 20px;
}

.metric-label {
  display: block;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric-value {
  font-size: 28px;
  font-weight: 700;
  font-family: "JetBrains Mono", monospace;
}

.metric-helper {
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
}

.workspace {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr) 320px;
  gap: 20px;
  min-height: 72vh;
}

.panel {
  padding: 20px;
}

.controls-panel,
.insights-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.panel-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.control-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.search-input,
.control-select {
  width: 100%;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.72);
  color: var(--text);
  font: inherit;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.chips,
.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip,
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.72);
  border: 1px solid var(--border);
  font-size: 13px;
  cursor: pointer;
}

.chip.active {
  border-color: rgba(56, 189, 248, 0.65);
  box-shadow: inset 0 0 0 1px rgba(56, 189, 248, 0.4);
}

.swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
}

.graph-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 72vh;
}

.graph-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

#graph {
  width: 100%;
  min-height: 620px;
  flex: 1;
  border-radius: 20px;
  background:
    radial-gradient(circle at center, rgba(56, 189, 248, 0.05), transparent 45%),
    rgba(15, 23, 42, 0.7);
}

.list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.list li {
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
}

.list.compact li {
  padding: 10px 12px;
}

.list a {
  color: var(--text);
  text-decoration: none;
}

.list small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.tooltip {
  position: fixed;
  z-index: 20;
  max-width: 360px;
  padding: 16px;
  border-radius: 18px;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.22);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.tooltip h3 {
  margin: 0 0 10px;
  font-size: 16px;
}

.tooltip p {
  margin: 6px 0;
  font-size: 13px;
  color: #dbeafe;
}

.tooltip .tooltip-meta {
  margin-top: 10px;
  color: var(--muted);
}

.node {
  stroke: rgba(255, 255, 255, 0.65);
  stroke-width: 1.2;
  cursor: pointer;
}

.link {
  stroke: rgba(148, 163, 184, 0.15);
  stroke-linecap: round;
}

.cluster-label {
  fill: rgba(248, 250, 252, 0.22);
  font-size: 18px;
  font-weight: 700;
  text-anchor: middle;
  pointer-events: none;
}

.node-label {
  fill: rgba(226, 232, 240, 0.85);
  font-size: 11px;
  text-anchor: middle;
  pointer-events: none;
}

@media (max-width: 1280px) {
  .workspace {
    grid-template-columns: 280px minmax(0, 1fr);
  }

  .insights-panel {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  body {
    padding: 16px;
  }

  .hero,
  .graph-toolbar {
    flex-direction: column;
  }

  .metrics,
  .workspace,
  .insights-panel {
    grid-template-columns: 1fr;
  }

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

  #graph {
    min-height: 500px;
  }
}