:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1b1f24;
  --muted: #6b7280;
  --primary: #1f6feb;
  --primary-ink: #ffffff;
  --ok: #1a7f37;
  --ok-bg: #dafbe1;
  --bad: #cf222e;
  --bad-bg: #ffebe9;
  --warn: #9a6700;
  --warn-bg: #fff8c5;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 22, 26, .06), 0 2px 8px rgba(16, 22, 26, .04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --card: #161b22;
    --border: #2b313a;
    --text: #e6edf3;
    --muted: #9198a1;
    --primary: #4493f8;
    --primary-ink: #06131f;
    --ok: #3fb950;
    --ok-bg: #12261a;
    --bad: #f85149;
    --bad-bg: #2c1315;
    --warn: #d29922;
    --warn-bg: #2b2312;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex; align-items: center; gap: 24px;
  padding: 12px 24px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 16px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.brand:hover { text-decoration: none; }
.brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ok); box-shadow: 0 0 0 3px var(--ok-bg); }
.nav { display: flex; gap: 18px; flex: 1; flex-wrap: wrap; }
.nav a { color: var(--muted); font-weight: 500; }
.nav a:hover { color: var(--text); text-decoration: none; }
.logout { display: flex; align-items: center; gap: 10px; }
.who { color: var(--muted); font-size: 13px; }

.wrap { max-width: 1280px; margin: 0 auto; padding: 24px; }
.footer { max-width: 1280px; margin: 0 auto; padding: 8px 24px 32px; color: var(--muted); font-size: 12px; }

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
h2.section { margin: 28px 0 12px; }

.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head p { margin: 0; }
.page-head-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  margin-bottom: 18px;
}
.table-card { padding: 0; overflow-x: auto; }
.empty { text-align: center; padding: 40px; }

.cols { display: grid; grid-template-columns: 1.35fr 1fr; gap: 18px; align-items: start; }
@media (max-width: 900px) { .cols { grid-template-columns: 1fr; } }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin-bottom: 18px; }
.stat {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; display: flex; flex-direction: column; gap: 2px; box-shadow: var(--shadow);
}
.stat-value { font-size: 22px; font-weight: 650; }
.stat-label { font-size: 12px; color: var(--muted); }
.stat.ok .stat-value { color: var(--ok); }
.stat.bad .stat-value { color: var(--bad); }
.stat.paused .stat-value { color: var(--muted); }

.table { width: 100%; border-collapse: collapse; font-size: 14px; }
.table th {
  text-align: left; font-size: 11px; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.table td { padding: 10px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.table tr:last-child td { border-bottom: none; }
.table .num { text-align: right; white-space: nowrap; }
.table .actions { white-space: nowrap; display: flex; gap: 6px; justify-content: flex-end; }
.table .truncate { max-width: 320px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
tr.row-down { background: color-mix(in srgb, var(--bad-bg) 55%, transparent); }

.badge {
  display: inline-block; padding: 2px 9px; border-radius: 999px;
  font-size: 12px; font-weight: 600; white-space: nowrap;
}
.badge-up { background: var(--ok-bg); color: var(--ok); }
.badge-down { background: var(--bad-bg); color: var(--bad); }
.badge-pending { background: var(--warn-bg); color: var(--warn); }
.badge-paused { background: var(--border); color: var(--muted); }

.cert.ok { color: var(--ok); }
.cert.warn { color: var(--warn); font-weight: 600; }
.cert.bad { color: var(--bad); font-weight: 600; }

.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.strong { font-weight: 600; }
.err { color: var(--bad); }
.mono { font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace; }
.hint { font-weight: 400; color: var(--muted); font-size: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 7px 14px; border-radius: 7px; border: 1px solid var(--border);
  background: var(--card); color: var(--text); font-size: 14px; font-weight: 500;
  cursor: pointer; text-decoration: none; line-height: 1.2;
}
.btn:hover { border-color: var(--muted); text-decoration: none; }
.btn-primary { background: var(--primary); border-color: var(--primary); color: var(--primary-ink); }
.btn-primary:hover { filter: brightness(1.08); }
.btn-danger { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn-ghost { background: transparent; }
.btn-sm { padding: 4px 9px; font-size: 12.5px; }
.btn-block { width: 100%; margin-top: 8px; }

.form label, .card > label { display: block; margin-bottom: 14px; font-size: 13px; font-weight: 600; }
input[type=text], input[type=email], input[type=password], input[type=number], select, textarea {
  width: 100%; margin-top: 5px; padding: 8px 10px;
  border: 1px solid var(--border); border-radius: 7px;
  background: var(--bg); color: var(--text); font: inherit; font-weight: 400;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--primary); outline-offset: 1px; border-color: var(--primary); }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0 16px; }
@media (max-width: 800px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

label.check { display: flex; align-items: flex-start; gap: 8px; font-weight: 500; margin-top: 6px; }
label.check input { margin-top: 3px; width: auto; }
.label-bottom { display: flex; align-items: flex-end; }

.form-actions { display: flex; gap: 10px; margin-bottom: 24px; }
.inline-form { display: flex; gap: 6px; align-items: center; }
.inline-form input { margin-top: 0; min-width: 160px; }

.alert { padding: 11px 14px; border-radius: var(--radius); margin-bottom: 16px; border: 1px solid transparent; font-size: 14px; }
.alert-error { background: var(--bad-bg); color: var(--bad); border-color: var(--bad); }
.alert-warn { background: var(--warn-bg); color: var(--warn); border-color: var(--warn); }
.alert-ok { background: var(--ok-bg); color: var(--ok); border-color: var(--ok); }

.danger-zone { border-color: var(--bad); }
.danger-zone h2 { color: var(--bad); }

.dl { display: grid; grid-template-columns: 170px 1fr; gap: 6px 14px; margin: 0; font-size: 13.5px; }
.dl dt { color: var(--muted); }
.dl dd { margin: 0; word-break: break-word; }

.chart { width: 100%; height: auto; }
.chart-line { fill: none; stroke: var(--primary); stroke-width: 2; stroke-linejoin: round; }
.chart-area { fill: color-mix(in srgb, var(--primary) 14%, transparent); stroke: none; }
.chart-grid { stroke: var(--border); stroke-width: 1; }
.chart-axis { fill: var(--muted); font-size: 10px; }
.chart-fail { fill: var(--bad); }
.chart-empty { fill: var(--muted); font-size: 13px; }

.login-wrap { display: flex; justify-content: center; padding-top: 8vh; }
.login-card { width: 100%; max-width: 380px; }
.login-card h1 { margin-bottom: 2px; }
.login-card p { margin-top: 0; margin-bottom: 18px; }
.center-card { text-align: center; max-width: 460px; margin: 8vh auto; }
.center-card h1 { font-size: 48px; }