:root {
  --bg: #ffffff;
  --fg: #17171b;
  --muted: #5b5b66;
  --line: #e2e2e8;
  --accent: #2f6f4f;
  --code-bg: #f4f4f6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16161a;
    --fg: #e8e8ec;
    --muted: #a0a0ac;
    --line: #2c2c33;
    --accent: #7cc4a0;
    --code-bg: #212128;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font:
    16px/1.6 -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    Roboto,
    sans-serif;
}

main {
  max-width: 46rem;
  margin: 0 auto;
  padding: 3rem 1.25rem 5rem;
}
h1 {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}
h2 {
  font-size: 1.1rem;
  margin: 2.5rem 0 0.75rem;
}
.lead {
  color: var(--muted);
}
section {
  border-top: 1px solid var(--line);
  padding-top: 0.5rem;
}

label {
  display: block;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 1rem 0 0.25rem;
}

input {
  width: 100%;
  padding: 0.5rem 0.65rem;
  font: inherit;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9rem;
  color: var(--fg);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
  flex-wrap: wrap;
}

button {
  padding: 0.5rem 1rem;
  font: inherit;
  color: var(--bg);
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 6px;
  cursor: pointer;
}

button.secondary {
  color: var(--accent);
  background: transparent;
}
button:hover {
  opacity: 0.88;
}

.status {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--muted);
  min-height: 1.6em;
}
.status.error {
  color: #c0392b;
}

.trace {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}

.trace li {
  border-left: 2px solid var(--accent);
  padding: 0.35rem 0 0.35rem 0.75rem;
  margin-bottom: 0.35rem;
}

.trace .layer {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.trace .note {
  display: block;
}
.trace .at {
  font-size: 0.78rem;
  color: var(--muted);
}

code {
  background: var(--code-bg);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
  font-size: 0.9em;
}
a {
  color: var(--accent);
}
ul {
  color: var(--muted);
}