:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --card: #ffffff;
  --border: #dbe2ea;
  --text: #182230;
  --muted: #5d6b82;
  --primary: #0f62fe;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app-header {
  padding: 24px;
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.app-header h1 {
  margin: 0;
}

.app-header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.app-main {
  max-width: 1024px;
  margin: 0 auto;
  padding: 24px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
}

.card h2 {
  margin: 0 0 16px;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

button:hover {
  opacity: 0.9;
}

label {
  display: grid;
  gap: 4px;
  font-size: 14px;
}

input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-bottom: 12px;
}

pre {
  margin: 0;
  padding: 12px;
  min-height: 220px;
  border-radius: 8px;
  background: #0f172a;
  color: #f8fafc;
  overflow-x: auto;
}