:root {
  color-scheme: dark;
  --bg: #0c0f10;
  --panel: #15191a;
  --panel-2: #101415;
  --line: #2d3638;
  --text: #e9f0ed;
  --muted: #8f9d9a;
  --accent: #48d6a3;
  --accent-2: #f7c95f;
  --danger: #ff756d;
  --blue: #66a7ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 980px;
  background: radial-gradient(circle at 50% -20%, #1b2b28 0, var(--bg) 34rem);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.app {
  width: min(1540px, calc(100vw - 18px));
  margin: 0 auto;
  padding: 10px 0 22px;
}

.topbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  border: 1px solid var(--line);
  background: #111617;
  padding: 10px 14px;
  margin-bottom: 10px;
}

h1, h2, p { margin: 0; }
h1 { font-size: 20px; letter-spacing: 0; font-weight: 720; }
h2 { font-size: 12px; letter-spacing: .12em; text-transform: uppercase; color: #cfe0dc; }
p { margin-top: 2px; color: var(--muted); font-size: 12px; }

.status {
  min-width: 180px;
  text-align: right;
  color: var(--accent);
  font: 13px ui-monospace, SFMono-Regular, Menlo, monospace;
}

.instrument {
  display: grid;
  grid-template-columns: 250px minmax(520px, 1fr) 230px;
  gap: 10px;
  align-items: start;
}

.panel {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  box-shadow: 0 18px 36px rgb(0 0 0 / .22);
}

.controls, .diagnostics { padding: 10px; }
.controls section + section { margin-top: 10px; border-top: 1px solid var(--line); padding-top: 10px; }

label, summary, .sorter {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 12px;
}

output { float: right; color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

input, select, button {
  width: 100%;
  margin-top: 5px;
  border: 1px solid #3a4547;
  background: #0d1112;
  color: var(--text);
  min-height: 28px;
  padding: 4px 8px;
  border-radius: 4px;
  font: inherit;
}

input[type="range"] { padding: 0; accent-color: var(--accent); }

button {
  cursor: pointer;
  font-weight: 690;
  transition: border-color .15s, transform .15s, background .15s;
}

button:hover { border-color: var(--accent); transform: translateY(-1px); }
button.primary { background: var(--accent); color: #04110d; border-color: var(--accent); }
button.ghost { background: transparent; color: #bfd0cc; }

.button-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 7px;
  margin-top: 8px;
}

details { margin-top: 6px; }
summary { cursor: pointer; user-select: none; }

.graph-zone, .graph-panel, .plot-panel { min-width: 0; }
.graph-zone {
  display: grid;
  grid-template-rows: auto auto;
  gap: 10px;
}
.graph-panel {
  display: flex;
  flex-direction: column;
  height: 300px;
}

.panel-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--line);
}

.panel-head span, .readout {
  color: var(--muted);
  font-size: 12px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

#graph {
  width: 100%;
  height: 100%;
  min-height: 0;
}

.edge { stroke: #5f7175; stroke-width: 2.2; fill: none; cursor: pointer; }
.edge.chain { stroke: #a4b5b2; }
.edge.skip-edge {
  stroke: var(--accent-2);
  stroke-width: 3.2;
  stroke-dasharray: 7 7;
}
.edge.skip-edge:hover { stroke: var(--danger); stroke-width: 5; }
.skip-hit {
  fill: none;
  stroke: transparent;
  stroke-width: 24;
  cursor: pointer;
  pointer-events: stroke;
}
.skip-hit:hover + .skip-edge,
.edge.skip-edge:has(+ .skip-hit:hover) {
  stroke: var(--danger);
  stroke-width: 5;
}
.node { cursor: pointer; }
.node circle { fill: #141b1c; stroke: #d8e8e4; stroke-width: 2; }
.node.selected circle { stroke: var(--accent-2); stroke-width: 4; }
.node text { fill: var(--text); font-size: 13px; text-anchor: middle; dominant-baseline: middle; pointer-events: none; }
.node .caption { fill: var(--muted); font-size: 11px; }
.weight-matrix rect {
  fill: #0f1617;
  stroke: var(--accent);
  stroke-width: 2;
}
.weight-matrix text {
  fill: var(--text);
  font-size: 12px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: middle;
  pointer-events: none;
}
.weight-matrix .caption {
  fill: var(--muted);
  font-size: 10px;
  font-weight: 500;
}

.diagnostics dl { margin: 12px 0 0; }
.diagnostics dt {
  color: var(--muted);
  font-size: 12px;
  margin-top: 11px;
}
.diagnostics dd {
  margin: 2px 0 0;
  color: var(--accent);
  font: 14px ui-monospace, SFMono-Regular, Menlo, monospace;
  overflow-wrap: anywhere;
}

.gallery-section { margin-top: 10px; }
.plot-panel { padding-bottom: 4px; }
#plot {
  display: block;
  width: 100%;
  height: 230px;
}
.plot-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}
.plot-tools .check { margin: 0; display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.plot-tools input { width: auto; min-height: 0; margin: 0; }
.plot-tools button { width: auto; margin: 0; min-height: 30px; }
.readout { padding: 0 12px 6px; }

.gallery-panel { padding-bottom: 12px; }
.gallery-tools { display: flex; align-items: center; gap: 8px; }
.sorter { margin: 0; display: flex; align-items: center; gap: 8px; }
.sorter select { width: 170px; margin: 0; }
.icon-button {
  width: 32px;
  min-height: 30px;
  margin: 0;
  padding: 5px;
  display: inline-grid;
  place-items: center;
}
.icon-button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.icon-button:hover { color: var(--danger); border-color: var(--danger); }
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 10px;
  padding: 12px 14px 0;
}

.card {
  border: 1px solid #344043;
  background: #101516;
  border-radius: 6px;
  padding: 10px;
  cursor: pointer;
}
.card:hover { border-color: var(--accent); }
.card.selected { outline: 2px solid var(--accent-2); }
.card-head { display: flex; justify-content: space-between; color: #dce8e5; font-size: 13px; font-weight: 690; }
.card small { display: block; color: var(--muted); margin-top: 4px; line-height: 1.35; }
.spark { width: 100%; height: 42px; margin-top: 8px; }

@media (max-width: 1100px) {
  body { min-width: 0; }
  .instrument { grid-template-columns: 1fr; }
  .graph-zone { grid-template-rows: auto auto; }
  .app { width: calc(100vw - 16px); }
}