:root {
  --bg: #f7f7f5; --card: #fff; --text: #1d1d1f; --muted: #5f6368;
  --accent: #2563eb; --accent-ink: #fff; --border: #e3e3e0;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #121214; --card: #1c1c1f; --text: #ececec; --muted: #a0a0a8; --accent: #5b8cff; --border: #2c2c31; }
}
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; background: var(--bg); color: var(--text); }
header, main, footer { max-width: 860px; margin: 0 auto; padding: 0 16px; }
header { display: flex; justify-content: space-between; align-items: center; padding-top: 16px; padding-bottom: 16px; }
header a { color: var(--text); text-decoration: none; font-weight: 700; }
nav a { font-weight: 500; margin-left: 16px; color: var(--muted); }
h1 { font-size: clamp(1.6rem, 4vw, 2.2rem); line-height: 1.2; margin: 16px 0 8px; }
.lead { color: var(--muted); margin-top: 0; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 20px; margin: 20px 0; }
textarea, input[type=text], select { width: 100%; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 10px; }
textarea { min-height: 180px; font-family: ui-monospace, Consolas, monospace; font-size: 14px; }
button, .btn { display: inline-block; font: inherit; font-weight: 600; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px; padding: 10px 18px; cursor: pointer; margin: 10px 8px 0 0; text-decoration: none; }
button.secondary { background: transparent; color: var(--text); border: 1px solid var(--border); }
.drop { border: 2px dashed var(--border); border-radius: 12px; padding: 28px; text-align: center; color: var(--muted); cursor: pointer; }
.drop.over { border-color: var(--accent); }
.status { color: var(--muted); font-size: 14px; min-height: 1.4em; }
.error { color: #d33; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.grid a { display: block; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; color: var(--text); text-decoration: none; }
.grid a:hover { border-color: var(--accent); }
.grid small { color: var(--muted); display: block; }
.badge { display: inline-block; font-size: 13px; color: var(--muted); border: 1px solid var(--border); border-radius: 99px; padding: 2px 10px; }
footer { color: var(--muted); font-size: 14px; padding-top: 24px; padding-bottom: 32px; }
ol li, ul li { margin-bottom: 4px; }