:root {
  --bg: #f5f6f8; --card: #ffffff; --text: #1c1e21; --muted: #6b7280; --line: #e5e7eb;
  --accent: #ff5a00; --accent-text: #ffffff; --on: #15803d; --on-bg: #dcfce7;
  --off: #b91c1c; --off-bg: #fee2e2; --warn: #92400e; --warn-bg: #fef3c7; --code: #f3f4f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111317; --card: #1b1e24; --text: #e6e7ea; --muted: #9aa0aa; --line: #2c3038;
    --on: #4ade80; --on-bg: #14361f; --off: #f87171; --off-bg: #3b1717;
    --warn: #fbbf24; --warn-bg: #3a2c0b; --code: #252932;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
       background: var(--bg); color: var(--text); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
header { background: var(--card); border-bottom: 1px solid var(--line); }
header .wrap { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; padding-top: 12px; padding-bottom: 12px; }
header .logo { font-weight: 700; font-size: 17px; color: var(--text); }
header nav { display: flex; gap: 16px; flex-wrap: wrap; flex: 1; }
header nav a { color: var(--muted); font-weight: 500; }
header nav a.on { color: var(--text); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 48px; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 18px; margin-bottom: 18px; }
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); }
.stat { font-size: 26px; font-weight: 700; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.scroll { overflow-x: auto; }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; }
.b-on { background: var(--on-bg); color: var(--on); }
.b-off { background: var(--off-bg); color: var(--off); }
.b-warn { background: var(--warn-bg); color: var(--warn); }
.b-muted { background: var(--code); color: var(--muted); }
button, .btn { font: inherit; font-weight: 600; border: 1px solid var(--line); background: var(--card); color: var(--text);
               padding: 8px 14px; border-radius: 8px; cursor: pointer; }
button.primary, .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button:disabled { opacity: .5; cursor: default; }
input[type=text], input[type=password], input[type=number], select, textarea {
  font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 7px; padding: 7px 9px; }
input[type=number] { width: 90px; }
textarea { width: 100%; min-height: 90px; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
label { display: block; margin-bottom: 10px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.msg { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; }
.msg.ok { background: var(--on-bg); color: var(--on); }
.msg.err { background: var(--off-bg); color: var(--off); }
pre.log { background: var(--code); padding: 12px; border-radius: 8px; font-size: 12px; overflow-x: auto; max-height: 340px; white-space: pre-wrap; }
.code-big { font-size: 30px; font-weight: 700; letter-spacing: 3px; font-family: ui-monospace, Consolas, monospace; }
.login-box { max-width: 360px; margin: 12vh auto; }
.login-box input { width: 100%; }