:root {
  --bg: #ffffff;
  --ink: #141414;
  --muted: #6a6a6a;
  --line: #dedede;
  --card: #fafafa;
  --accent: #1146d2;
  --accent-soft: #dce6ff;
  --success: #0f8b5f;
  --danger: #bb2f2f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(180deg, #ffffff 0%, #fcfcfd 100%);
  color: var(--ink);
  font-family: "Space Grotesk", "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.4;
}

.app-shell {
  width: min(1600px, 92vw);
  margin: 56px auto 72px;
}

.hero {
  margin-bottom: 38px;
  max-width: 980px;
}

.kicker {
  margin: 0;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  font-size: 0.75rem;
  color: var(--muted);
}

h1 {
  margin: 8px 0 10px;
  font-weight: 600;
  font-size: clamp(1.65rem, 2.5vw, 2.5rem);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 860px;
}

.layout-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
  align-items: start;
}

.panel {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
}

.controls-panel {
  position: sticky;
  top: 20px;
}

h2 {
  margin: 0 0 14px;
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.input-grid {
  display: grid;
  gap: 12px;
}

label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: #373737;
  font-size: 0.85rem;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 11px;
  font: inherit;
  background: var(--bg);
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.button-row {
  margin-top: 16px;
  margin-bottom: 18px;
  display: flex;
  gap: 10px;
}

button {
  border-radius: 8px;
  padding: 10px 14px;
  font-family: inherit;
  font-size: 0.85rem;
  cursor: pointer;
}

.run-btn {
  border: 1px solid var(--accent);
  background: var(--accent);
  color: #fff;
}

.run-btn:hover {
  filter: brightness(0.95);
}

.ghost-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: #333;
}

.status-card {
  margin-top: 16px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--card);
}

.status-card p {
  margin: 0;
}

.status-label {
  margin-top: 8px;
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.viz-panel {
  display: grid;
  gap: 18px;
}

.chart-block {
  padding: 8px 6px;
}

.chart-svg {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
}

.legend-row {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.8rem;
  color: var(--muted);
}

.swatch {
  display: inline-block;
  width: 18px;
  height: 2px;
  margin-right: 6px;
  vertical-align: middle;
}

.swatch-ancestral {
  background: #222;
}

.swatch-afr-selected {
  background: #136f63;
}

.swatch-afr-neutral {
  background: #8ecdc3;
}

.swatch-eur-selected {
  background: #bb3e03;
}

.swatch-eur-neutral {
  background: #f2b594;
}

.output-panel {
  grid-column: 2;
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
}

.result-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #fff;
}

.result-card .name {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
}

.result-card .value {
  margin-top: 8px;
  font-size: 1.15rem;
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

.result-card .sub {
  margin-top: 4px;
  color: var(--muted);
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  font-size: 0.77rem;
}

.footnote {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.75rem;
}

.mono {
  font-family: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
}

.chart-tooltip {
  position: fixed;
  z-index: 1000;
  pointer-events: none;
  background: rgba(255, 255, 255, 0.98);
  border: 1px solid #d9d9d9;
  border-radius: 8px;
  padding: 8px 10px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.08);
  color: #1f1f1f;
  font-size: 0.76rem;
  line-height: 1.4;
  min-width: 140px;
}

.chart-tooltip .title {
  font-weight: 600;
  margin-bottom: 4px;
}

.chart-hover-dot {
  position: fixed;
  width: 10px;
  height: 10px;
  margin-left: -5px;
  margin-top: -5px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid #111111;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.9);
  pointer-events: none;
  z-index: 1001;
}

@media (max-width: 1200px) {
  .layout-grid {
    grid-template-columns: 1fr;
  }

  .controls-panel {
    position: static;
  }

  .output-panel {
    grid-column: 1;
  }
}