:root {
  color-scheme: light;
  --bg: #f8f9fb;
  --card: #ffffff;
  --line: #dbe1ea;
  --text: #1b2430;
  --muted: #5f6b7a;
  --primary: #1f6feb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 14px;
  margin-bottom: 12px;
}

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

.grid.two {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 900px) {
  .grid.two {
    grid-template-columns: 1fr;
  }
}

h1, h2, h3 {
  margin: 0 0 10px;
}

h1 {
  font-size: 1.4rem;
}

h2 {
  font-size: 1.05rem;
}

h3 {
  font-size: 0.95rem;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.9rem;
}

.sep {
  margin: 0 8px;
  color: #9aa4b1;
}

.row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.row.buttons {
  display: flex;
  gap: 8px;
}

.stack {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}

label {
  display: grid;
  gap: 4px;
  font-size: 0.9rem;
}

input,
select,
button,
textarea {
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fff;
}

button {
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

button.secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

pre {
  margin: 0;
  background: #f3f6fb;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  max-height: 280px;
  overflow: auto;
  font-size: 0.82rem;
  line-height: 1.45;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
}

.metrics div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px;
  background: #fbfcfe;
}

.metrics span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 2px;
}

.metrics strong {
  font-size: 1rem;
}

ol {
  margin: 0;
  padding-left: 22px;
}

li {
  margin-bottom: 6px;
  line-height: 1.4;
}