:root {
  --bg: #0d1117;
  --panel: #131a22;
  --line: #26313d;
  --fg: #d6dde6;
  --dim: #8a97a6;
  --accent: #58a6ff;
  --good: #3fb950;
  --bad: #f85149;
  --pt: #ffffff;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font:
    13px/1.45 ui-monospace,
    SFMono-Regular,
    Menlo,
    Consolas,
    monospace;
}

#app {
  display: flex;
  height: 100%;
}

#sidebar {
  width: 320px;
  min-width: 320px;
  overflow-y: auto;
  border-right: 1px solid var(--line);
  background: var(--panel);
  padding: 10px 12px 40px;
}

#sidebar header h1 {
  margin: 4px 0 0;
  font-size: 18px;
  letter-spacing: 0.5px;
}

#sidebar header .sub {
  color: var(--dim);
  margin-bottom: 8px;
}

.panel {
  border-top: 1px solid var(--line);
  padding: 10px 0;
}

.panel h2 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--dim);
  margin: 0 0 8px;
}

.hint {
  color: #4d5966;
  text-transform: none;
  letter-spacing: 0;
}

label {
  display: block;
  margin: 6px 0;
  color: var(--dim);
}

label.check {
  display: flex;
  gap: 6px;
  align-items: center;
}

label.check span {
  color: var(--fg);
}

input[type='number'],
input[type='text'],
select {
  width: 100%;
  background: #0b1016;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 4px 6px;
  font: inherit;
}

input[type='range'] {
  width: 100%;
}

button {
  background: #1b2530;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 5px 9px;
  font: inherit;
  cursor: pointer;
}

button:hover {
  border-color: var(--accent);
}

button.primary {
  background: #1f6feb;
  border-color: #1f6feb;
  color: #fff;
}

.row {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.row button {
  flex: 1;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.status {
  white-space: pre-wrap;
  color: var(--dim);
  margin: 8px 0 0;
  font-size: 12px;
}

.status.ok {
  color: var(--good);
}

.status.err {
  color: var(--bad);
}

.legend {
  margin-top: 6px;
}

.legend .bar {
  height: 10px;
  border-radius: 2px;
  border: 1px solid var(--line);
}

.legend .ticks {
  display: flex;
  justify-content: space-between;
  color: var(--dim);
  font-size: 11px;
}

.topk {
  max-height: 220px;
  overflow: auto;
  margin-top: 6px;
}

.topk .item {
  display: flex;
  justify-content: space-between;
  gap: 6px;
  padding: 3px 5px;
  border: 1px solid transparent;
  border-radius: 3px;
  cursor: pointer;
}

.topk .item:hover,
.topk .item.sel {
  border-color: var(--accent);
  background: #16202b;
}

.topk .item b {
  color: var(--accent);
  font-weight: 600;
}

#stage {
  position: relative;
  flex: 1;
  overflow: hidden;
}

#view {
  display: block;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.hud,
.inspector,
.help {
  position: absolute;
  background: rgba(13, 17, 23, 0.82);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 6px 8px;
  pointer-events: none;
  white-space: pre;
  font-size: 12px;
}

.hud {
  top: 8px;
  left: 8px;
}

.inspector {
  top: 8px;
  right: 8px;
}

.help {
  bottom: 8px;
  left: 8px;
  color: var(--dim);
}