:root { color-scheme: light dark; --fg: #1b1f24; --bg: #fbfbfa; --muted: #5d6670; --line: #d6d9dc; --accent: #0b5cad; }
@media (prefers-color-scheme: dark) { :root { --fg: #e6e8ea; --bg: #15181b; --muted: #9aa3ad; --line: #30363d; --accent: #6cb0ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 16px/1.5 system-ui, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px; }
h1 { font-size: 1.4rem; margin: 0 0 16px; }
textarea, pre#out { width: 100%; font: 14px/1.45 ui-monospace, monospace; border: 1px solid var(--line); border-radius: 6px; padding: 10px; background: transparent; color: inherit; white-space: pre-wrap; word-break: break-word; }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin: 12px 0; }
button { font: inherit; padding: 8px 14px; border-radius: 6px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; }
code { word-break: break-all; }
#notice { color: var(--muted); }