:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e3e6eb;
  --text: #16181d;
  --muted: #6a7180;
  --accent: #3b5bdb;
  --up: #2f9e44;
  --down: #e03131;
  --warning: #f08c00;
  --pending: #868e96;
  --paused: #adb5bd;
  --empty: #e3e6eb;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a20;
    --surface-2: #1e222a;
    --border: #2a2f39;
    --text: #e7e9ee;
    --muted: #9aa1ae;
    --accent: #7b93ff;
    --up: #40c057;
    --down: #ff6b6b;
    --warning: #fcc419;
    --pending: #868e96;
    --paused: #5c636e;
    --empty: #2a2f39;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; margin: 0; letter-spacing: -.01em; }
h2 { font-size: 16px; margin: 0 0 12px; }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
pre { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 12px; overflow-x: auto; white-space: pre-wrap; word-break: break-all; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
main.wrap { padding-top: 24px; padding-bottom: 48px; }

.topbar { background: var(--surface); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; gap: 16px; }
.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(--up); box-shadow: 0 0 0 4px color-mix(in srgb, var(--up) 20%, transparent); }
nav { display: flex; gap: 4px; flex-wrap: wrap; }
nav a { color: var(--muted); padding: 6px 10px; border-radius: 6px; }
nav a:hover { background: var(--surface-2); text-decoration: none; color: var(--text); }
nav a.active { color: var(--text); background: var(--surface-2); font-weight: 600; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head .sub { color: var(--muted); margin-top: 4px; word-break: break-all; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px; margin-bottom: 16px; }
.card.flush { padding: 0; overflow: hidden; }
.card-head { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--border); }
.card-head h2 { margin: 0; }

.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 24px; font-weight: 650; margin-top: 2px; font-variant-numeric: tabular-nums; }
.stat .value.small { font-size: 16px; }
.c-up { color: var(--up); } .c-down { color: var(--down); } .c-warning { color: var(--warning); } .c-muted { color: var(--muted); }

.btn { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); padding: 7px 12px; border-radius: 7px; font: inherit; font-weight: 550; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent); filter: brightness(1.08); }
.btn-danger { color: var(--down); }
.btn-sm { padding: 4px 9px; font-size: 13px; }
form.inline { display: inline; margin: 0; }

.pill { display: inline-flex; align-items: center; gap: 6px; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; white-space: nowrap; background: var(--surface-2); }
.pill .dot { width: 8px; height: 8px; border-radius: 50%; background: currentColor; }
.pill-up { color: var(--up); background: color-mix(in srgb, var(--up) 12%, transparent); }
.pill-down { color: var(--down); background: color-mix(in srgb, var(--down) 12%, transparent); }
.pill-warning { color: var(--warning); background: color-mix(in srgb, var(--warning) 14%, transparent); }
.pill-pending, .pill-paused { color: var(--muted); }
.badge { display: inline-block; font-size: 11px; padding: 1px 7px; border-radius: 4px; background: var(--surface-2); color: var(--muted); border: 1px solid var(--border); white-space: nowrap; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 18px; border-bottom: 1px solid var(--border); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .04em; background: var(--surface-2); }
tr:last-child td { border-bottom: 0; }
td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.mon-name { font-weight: 600; color: var(--text); }
.mon-target { color: var(--muted); font-size: 12.5px; word-break: break-all; }
.table-scroll { overflow-x: auto; }

.checkbar { display: flex; gap: 2px; height: 22px; align-items: stretch; min-width: 160px; }
.tick { flex: 1; min-width: 3px; border-radius: 2px; }
.tick-up { background: var(--up); }
.tick-down { background: var(--down); }
.tick-warning { background: var(--warning); }
.tick-empty { background: var(--empty); }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid; }
.flash-ok { border-color: color-mix(in srgb, var(--up) 40%, transparent); background: color-mix(in srgb, var(--up) 10%, transparent); }
.flash-error { border-color: color-mix(in srgb, var(--down) 40%, transparent); background: color-mix(in srgb, var(--down) 10%, transparent); }
.notice { padding: 12px 14px; border-radius: 8px; margin-bottom: 16px; border: 1px solid color-mix(in srgb, var(--warning) 45%, transparent); background: color-mix(in srgb, var(--warning) 10%, transparent); }
.notice code { background: var(--surface); padding: 1px 5px; border-radius: 4px; }

.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 5px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 4px; font-weight: 400; }
input[type=text], input[type=url], input[type=number], input[type=password], select, textarea {
  width: 100%; padding: 8px 10px; border: 1px solid var(--border); border-radius: 7px; background: var(--surface); color: var(--text); font: inherit;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
.check { display: flex; gap: 8px; align-items: center; font-weight: 500; }
fieldset { border: 0; padding: 0; margin: 0; }
.hidden { display: none !important; }

.empty { text-align: center; padding: 48px 16px; color: var(--muted); }
.empty h2 { color: var(--text); }
.chart-box { position: relative; height: 220px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; word-break: break-all; }

.auth { max-width: 380px; margin: 10vh auto 0; }
.auth .brand { justify-content: center; margin-bottom: 18px; font-size: 20px; }

@media (max-width: 720px) {
  .form-grid, .grid-2 { grid-template-columns: 1fr; }
  th, td { padding: 9px 12px; }
  .hide-sm { display: none; }
  .topbar-inner { height: auto; padding-top: 10px; padding-bottom: 10px; flex-wrap: wrap; }
}

.server-group > summary { cursor: pointer; list-style: none; gap: 12px; }
.server-group > summary::-webkit-details-marker { display: none; }
.server-group > summary h2 { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.server-group > summary h2::before { content: "▸"; color: var(--muted); font-size: 12px; transition: transform .15s; }
.server-group[open] > summary h2::before { transform: rotate(90deg); }
.server-group:not([open]) > summary { border-bottom: 0; }