:root {
  color-scheme: dark;
  --bg: #111;
  --card: #1b1b1b;
  --fg: #f3f3f3;
  --muted: #9a9a9a;
  --line: #2a2a2a;
  --accent: #e8e8e8;
  --on: #111;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.25rem 1.1rem 3rem;
}

header h1 {
  margin: 0.15rem 0 0.4rem;
  font-size: 1.6rem;
  letter-spacing: -0.03em;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

#status {
  margin: 0;
  font-size: 1.05rem;
}

.meta,
.hint {
  color: var(--muted);
  font-size: 0.9rem;
}

.hint {
  margin: 0 0 0.7rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 1.4rem;
}

button {
  appearance: none;
  border: 0;
  border-radius: 999px;
  padding: 0.7rem 1rem;
  background: var(--accent);
  color: var(--on);
  font: inherit;
  font-weight: 600;
}

button.ghost {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
}

button:disabled {
  opacity: 0.4;
}

.chip {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--line);
  font-weight: 500;
}

.chip.on {
  background: var(--accent);
  color: var(--on);
  border-color: var(--accent);
}

section {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
  padding: 1rem;
  margin-bottom: 0.8rem;
}

h2 {
  margin: 0 0 0.7rem;
  font-size: 0.95rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.slider {
  display: grid;
  grid-template-columns: 3.4rem 1fr 2.2rem;
  gap: 0.6rem;
  align-items: center;
  margin: 0.45rem 0;
}

.slider input[type="range"] {
  width: 100%;
}

.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.log-wrap {
  margin-top: 1.2rem;
}

pre {
  margin: 0;
  max-height: 12rem;
  overflow: auto;
  white-space: pre-wrap;
  color: var(--muted);
  font-size: 0.78rem;
}

[hidden] {
  display: none !important;
}