:root {
  color-scheme: light dark;
  --bg: #fafafa;
  --fg: #1a1a1a;
  --muted: #666;
  --border: #ddd;
  --accent: #2563eb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --fg: #e6e6e6;
    --muted: #9aa0a6;
    --border: #333;
    --accent: #60a5fa;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0 auto;
  max-width: 60rem;
  padding: 0 1rem 3rem;
  font: 16px/1.5 system-ui, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

header { padding: 1.25rem 0; border-bottom: 1px solid var(--border); margin-bottom: 1.5rem; }
footer { margin-top: 3rem; color: var(--muted); font-size: 0.85rem; }

.brand { font-weight: 700; text-decoration: none; color: var(--fg); }
a { color: var(--accent); }

form { display: flex; flex-direction: column; gap: 1rem; }
textarea {
  width: 100%;
  font: 0.9rem/1.5 ui-monospace, monospace;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.5rem;
  resize: vertical;
}

input, select, button {
  font: inherit;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
}

button { cursor: pointer; background: var(--accent); border-color: var(--accent); color: #fff; }
button:hover { filter: brightness(1.1); }

.row { display: flex; gap: 2rem; flex-wrap: wrap; }
.row label { display: flex; flex-direction: column; gap: 0.25rem; }
.check { display: flex; align-items: center; gap: 0.5rem; }

.meta { display: flex; gap: 1rem; color: var(--muted); font-size: 0.85rem; margin-bottom: 0.75rem; flex-wrap: wrap; }
.meta code { color: var(--fg); }

.paste {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  overflow-x: auto;
  font: 0.85rem/1.45 ui-monospace, monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.error { color: #dc2626; }