:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #16181d;
  --muted: #5d6470;
  --border: #dde1e7;
  --accent: #2456d6;
  --accent-text: #ffffff;
  --danger: #c0352b;
  --warn-bg: #fff4d6;
  --warn-text: #6b4c00;
  --ok: #1d7a46;
  --code-bg: #f0f2f5;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317;
    --card: #1a1d23;
    --text: #e8eaee;
    --muted: #9aa2ae;
    --border: #2c313a;
    --accent: #5b8cff;
    --accent-text: #0b0d10;
    --danger: #ff6b5e;
    --warn-bg: #3a2f10;
    --warn-text: #ffd97a;
    --ok: #4fd18b;
    --code-bg: #0d0f12;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
header, main { max-width: 960px; margin: 0 auto; padding: 0 16px; }
header { padding-top: 32px; padding-bottom: 8px; }
h1 { margin: 0; font-size: 1.6rem; }
h2 { margin: 0 0 12px; font-size: 1.1rem; }
h2.spaced { margin-top: 24px; }
.sub, .muted { color: var(--muted); }
.sub { margin: 4px 0 16px; }
.muted { font-size: 0.9em; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 480px; margin-left: auto; margin-right: auto; }

label { display: block; margin-bottom: 12px; font-weight: 500; }
input {
  display: block; width: 100%; margin-top: 4px; padding: 9px 11px;
  font: inherit; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px;
}
input:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button {
  font: inherit; font-weight: 600; cursor: pointer;
  padding: 9px 16px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
}
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { color: var(--danger); border-color: var(--danger); background: transparent; }
button.ghost { background: transparent; }
button.small { padding: 4px 10px; font-size: 0.85em; }
button:disabled { opacity: 0.55; cursor: progress; }

.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.row input { flex: 1 1 180px; margin-top: 0; }
.row.between { justify-content: space-between; margin-top: 0; }

.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0 0 8px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; overflow-wrap: anywhere; }

.pill { display: inline-block; padding: 1px 10px; border-radius: 999px; font-size: 0.85em; font-weight: 600; }
.pill.ok { background: color-mix(in srgb, var(--ok) 15%, transparent); color: var(--ok); }
.pill.stale { background: var(--warn-bg); color: var(--warn-text); }

.banner { padding: 10px 14px; border-radius: 8px; }
.banner.warn { background: var(--warn-bg); color: var(--warn-text); }

pre, .log ol {
  font: 12.5px/1.45 ui-monospace, SFMono-Regular, Consolas, monospace;
  background: var(--code-bg); border-radius: 8px; padding: 10px 12px;
  overflow-x: auto; white-space: pre-wrap; overflow-wrap: anywhere;
}
.log ol { list-style: none; margin: 8px 0 0; max-height: 320px; overflow-y: auto; }
.log li { padding: 2px 0; border-bottom: 1px dashed var(--border); }
.log li:last-child { border-bottom: 0; }
.log .s2 { color: var(--ok); }
.log .s4, .log .s5 { color: var(--danger); }

dialog {
  border: 1px solid var(--border); border-radius: 12px; padding: 24px;
  background: var(--card); color: var(--text); max-width: min(440px, calc(100vw - 32px));
}
dialog::backdrop { background: rgb(0 0 0 / 0.45); }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px;
  max-width: calc(100vw - 32px);
}