:root {
  --bg: #f4f5f7; --card: #fff; --text: #1c1f24; --muted: #6b7280; --line: #e3e6ea;
  --up: #15803d; --up-bg: #dcfce7; --down: #b91c1c; --down-bg: #fee2e2; --warn: #b45309; --warn-bg: #fef3c7;
  --accent: #2563eb; --unknown: #6b7280; --unknown-bg: #e5e7eb;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1216; --card: #171b21; --text: #e7e9ec; --muted: #9aa3ad; --line: #262c34;
    --up-bg: #123222; --down-bg: #3a1616; --warn-bg: #3a2a0c; --unknown-bg: #262c34; --up: #4ade80; --down: #f87171; --warn: #fbbf24; --accent: #60a5fa; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 1100px; margin: 0 auto; padding: 20px 16px 40px; }
nav.top { display: flex; gap: 18px; align-items: center; padding: 10px 16px; background: var(--card); border-bottom: 1px solid var(--line); }
nav.top a { color: var(--muted); font-weight: 500; }
nav.top a.active, nav.top a:hover { color: var(--text); text-decoration: none; }
nav.top .brand { font-weight: 700; color: var(--text); margin-right: 8px; }
nav.top .spacer { flex: 1; }
h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 16px; margin: 24px 0 10px; }
.muted { color: var(--muted); }
.good { color: var(--up); font-weight: 600; }
.warn { color: var(--warn); font-weight: 600; }
.bad { color: var(--down); font-weight: 600; }
.foot { text-align: center; color: var(--muted); font-size: 13px; padding: 20px; }

.summary { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 18px; }
.summary .tile { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; min-width: 150px; }
.summary .tile .n { font-size: 24px; font-weight: 700; }
.summary .tile .l { color: var(--muted); font-size: 13px; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; display: flex; flex-direction: column; gap: 8px; }
.card.is-down { border-color: var(--down); box-shadow: 0 0 0 2px var(--down-bg); }
.card .head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.card .head .name { font-weight: 700; font-size: 16px; }
.card .head .url { color: var(--muted); font-size: 13px; display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px 6px; font-size: 13px; }
@media (max-width: 420px) { .card .metrics { grid-template-columns: repeat(2, 1fr); } }
svg.chart .bar-views { fill: var(--accent); opacity: .3; }
svg.chart .bar-visitors { fill: var(--accent); }
.share { display: flex; height: 10px; border-radius: 5px; overflow: hidden; background: var(--unknown-bg); margin: 6px 0 4px; }
.share span { display: block; height: 100%; }
.share .s1 { background: var(--accent); } .share .s2 { background: var(--up); } .share .s3 { background: var(--warn); } .share .s4 { background: var(--muted); }
.legend { display: flex; gap: 12px; flex-wrap: wrap; font-size: 12px; color: var(--muted); }
.legend i { display: inline-block; width: 9px; height: 9px; border-radius: 2px; margin-right: 4px; vertical-align: middle; }
.snippet { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-x: auto; white-space: pre; }
.card .metrics .m .v { font-weight: 600; font-size: 15px; }
.card .metrics .m .l { color: var(--muted); font-size: 12px; }
.card .spark-row { display: flex; align-items: center; gap: 10px; color: var(--accent); }
.card .spark-row .lbl { color: var(--muted); font-size: 12px; }
.card .err { color: var(--down); font-size: 13px; }
.card .foot-row { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.up { background: var(--up-bg); color: var(--up); }
.badge.down { background: var(--down-bg); color: var(--down); }
.badge.unknown { background: var(--unknown-bg); color: var(--unknown); }
.badge.warn { background: var(--warn-bg); color: var(--warn); }

svg.spark { display: block; }
svg.spark .spark-down { fill: var(--down); opacity: .6; }
svg.chart { width: 100%; height: 220px; display: block; background: var(--card); border: 1px solid var(--line); border-radius: 10px; }
svg.chart .grid { stroke: var(--line); stroke-width: 1; }
svg.chart .axis { fill: var(--muted); font-size: 11px; }
svg.chart .line { fill: none; stroke: var(--accent); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
svg.chart .down { fill: var(--down); opacity: .5; }

table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-wrap { overflow-x: auto; }

.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.info { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 12px 16px; }
.info h3 { margin: 0 0 8px; font-size: 14px; color: var(--muted); }
.info dl { margin: 0; display: grid; grid-template-columns: 1fr auto; gap: 4px 12px; font-size: 14px; }
.info dt { color: var(--muted); }
.info dd { margin: 0; text-align: right; font-weight: 500; word-break: break-all; }

.uptime-bar { display: flex; gap: 2px; height: 26px; }
.uptime-bar .d { flex: 1; border-radius: 2px; background: var(--unknown-bg); }
.uptime-bar .d.g { background: var(--up); } .uptime-bar .d.w { background: var(--warn); } .uptime-bar .d.b { background: var(--down); }

form.std { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; display: grid; gap: 12px; max-width: 560px; }
label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
input[type=text], input[type=url], input[type=password], input[type=number] { font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); }
button, .btn { font: inherit; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer; font-weight: 600; }
.btn.secondary, button.secondary { background: transparent; color: var(--accent); }
.btn.danger, button.danger { background: transparent; color: var(--down); border-color: var(--down); }
.btn.small, button.small { padding: 4px 10px; font-size: 13px; }
.row-actions { display: flex; gap: 6px; }
.alert { background: var(--down-bg); color: var(--down); padding: 10px 12px; border-radius: 8px; }
.notice { background: var(--up-bg); color: var(--up); padding: 10px 12px; border-radius: 8px; }
.login-box { max-width: 360px; margin: 10vh auto; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 24px; display: grid; gap: 12px; }
.login-box form { display: grid; gap: 12px; }
.toolbar { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
pre.out { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px; font-size: 13px; overflow-x: auto; }