:root {
  --navy: #1e3a8a;
  --orange: #f97316;
  --ink: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --bg: #f3f4f6;
  --card: #ffffff;
  --good: #15803d;
  --bad: #b91c1c;
}

@media (prefers-color-scheme: dark) {
  :root {
    --navy: #93b4f5;
    --ink: #e5e7eb;
    --muted: #9ca3af;
    --line: #374151;
    --bg: #111827;
    --card: #1f2937;
    --good: #4ade80;
    --bad: #f87171;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.6 system-ui, -apple-system, "Sarabun", sans-serif; }
a { color: var(--navy); }
main { max-width: 1000px; margin: 0 auto; padding: 24px 16px 64px; }
h1 { margin: 8px 0 16px; font-size: 24px; }
h1 small { color: var(--muted); font-size: 15px; font-weight: 400; }
h2 { margin: 28px 0 10px; font-size: 17px; }
h2.danger { color: var(--bad); }

.top { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 24px; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
.top nav { display: flex; flex-wrap: wrap; gap: 16px; flex: 1; }
.top nav a { text-decoration: none; color: var(--ink); }
.top form { display: flex; align-items: center; gap: 10px; }
.who { color: var(--muted); font-size: 13px; }

.brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; color: var(--ink); text-decoration: none; }
.brand em { font-style: normal; font-weight: 400; color: var(--muted); }
.brand.big { font-size: 20px; justify-content: center; margin-bottom: 16px; width: 100%; }
.mark { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 8px; background: var(--orange); color: #fff; font-weight: 800; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.scroll { overflow-x: auto; padding: 0; }
.login { max-width: 360px; margin: 12vh auto 0; }
.form { display: grid; gap: 12px; max-width: 560px; }
.form label, .login label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.login label { margin-bottom: 12px; }
.login button { width: 100%; }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.hint { margin: 0; color: var(--muted); font-size: 13px; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 14px; text-align: left; border-bottom: 1px solid var(--line); white-space: nowrap; }
th { color: var(--muted); font-size: 13px; font-weight: 500; }
tr:last-child td { border-bottom: 0; }

input, select, textarea { width: 100%; padding: 8px 10px; font: inherit; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 6px; }
input[readonly] { color: var(--muted); background: var(--bg); }
button, a.button { display: inline-block; padding: 8px 16px; font: inherit; font-weight: 600; color: #fff; text-decoration: none; background: #1e3a8a; border: 0; border-radius: 6px; cursor: pointer; }
button.bad, a.button.bad { background: #b91c1c; }
a.button.plain { color: var(--ink); background: var(--bg); border: 1px solid var(--line); }
button.link { padding: 0; font-weight: 400; color: var(--navy); background: none; }

.tabs { display: flex; flex-wrap: wrap; gap: 4px 20px; margin-bottom: 16px; border-bottom: 1px solid var(--line); }
.tabs a { padding: 8px 2px; color: var(--muted); text-decoration: none; border-bottom: 2px solid transparent; }
.tabs a.active { color: var(--ink); font-weight: 600; border-bottom-color: var(--orange); }
pre { max-height: 360px; margin: 0; padding: 12px; overflow: auto; font: 12px/1.5 ui-monospace, monospace; color: #e5e7eb; background: #111827; border-radius: 6px; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; border: 1px solid currentColor; }
.badge.on { color: var(--good); }
.badge.off { color: var(--bad); }
.flash { padding: 10px 14px; border-radius: 6px; border: 1px solid currentColor; background: var(--card); }
.flash.good { color: var(--good); }
.flash.bad { color: var(--bad); }