:root {
  color-scheme: dark;
  --bg: #0b1020;
  --card: #151b2e;
  --text: #e8eefc;
  --muted: #9aa7c0;
  --accent: #5b8cff;
  --border: #27314a;
  --error: #ff7b7b;
  --success: #6ddea6;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Inter, system-ui, sans-serif;
  background: linear-gradient(180deg, #0b1020, #11182b);
  color: var(--text);
  min-height: 100vh;
}

.topbar, .grid, .card.narrow {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0 12px;
}

.actions { display: flex; gap: 12px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
  padding-bottom: 32px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.card.narrow { margin-top: 10vh; }

.card.full { grid-column: 1 / -1; }

h1, h2 { margin-top: 0; }

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

label {
  display: grid;
  gap: 8px;
  margin-bottom: 14px;
}

input, button, .button {
  font: inherit;
}

input {
  background: #0d1324;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 10px 12px;
}

button, .button {
  background: var(--accent);
  color: white;
  border: 0;
  border-radius: 10px;
  padding: 10px 14px;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

button.secondary, .button.secondary {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}

.stats {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
}

.stats li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
}

.log {
  background: #0d1324;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px;
  overflow: auto;
  white-space: pre-wrap;
}

.error { color: var(--error); }
.success { color: var(--success); }
.hidden { display: none; }

code {
  background: #0d1324;
  padding: 2px 6px;
  border-radius: 6px;
}

ol { line-height: 1.8; }