:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f0f2f5;
  --border: #e3e6eb;
  --text: #15181e;
  --muted: #6b7280;
  --accent: #3b5bdb;
  --up: #2f9e44;
  --degraded: #e8a317;
  --down: #e03131;
  --unknown: #adb5bd;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a21;
    --surface-2: #1f232c;
    --border: #2a2f3a;
    --text: #e8eaee;
    --muted: #8b93a3;
    --accent: #7b93ff;
    --up: #40c057;
    --degraded: #fab005;
    --down: #ff6b6b;
    --unknown: #5c6370;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
h1 { font-size: 22px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 12px; }

.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px max(16px, env(safe-area-inset-left));
  background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 650; color: var(--text); white-space: nowrap; }
.brand-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--up); }
.topbar nav { display: flex; gap: 4px; overflow-x: auto; }
.topbar nav a { color: var(--muted); padding: 6px 10px; border-radius: 8px; font-size: 14px; white-space: nowrap; }
.topbar nav a.active { color: var(--text); background: var(--surface-2); }

main { max-width: 1080px; margin: 0 auto; padding: 20px 16px 60px; }
.loading, .empty { color: var(--muted); text-align: center; padding: 48px 0; }

.page-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; flex-wrap: wrap; }
.sub { color: var(--muted); font-size: 13px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; cursor: pointer;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 7px 14px; border-radius: 8px; font: inherit; font-size: 14px; font-weight: 500;
}
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.danger { color: var(--down); }
.btn:disabled { opacity: .55; cursor: default; }
.btn-row { display: flex; gap: 8px; flex-wrap: wrap; }

/* Summary strip */
.summary { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-bottom: 20px; }
.stat { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; box-shadow: var(--shadow); }
.stat .n { font-size: 24px; font-weight: 650; font-variant-numeric: tabular-nums; }
.stat .l { color: var(--muted); font-size: 13px; display: flex; align-items: center; gap: 6px; }

.banner { border-radius: var(--radius); padding: 10px 14px; margin-bottom: 16px; font-size: 14px; border: 1px solid; }
.banner.warn { border-color: var(--degraded); background: color-mix(in srgb, var(--degraded) 12%, transparent); }
.banner.bad { border-color: var(--down); background: color-mix(in srgb, var(--down) 12%, transparent); }

/* Monitor list */
.group-title { font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); margin: 18px 2px 8px; }
.list { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.row { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1.4fr) 80px 70px; align-items: center; gap: 14px; padding: 12px 16px; color: var(--text); border-top: 1px solid var(--border); }
.row:first-child { border-top: 0; }
.row:hover { background: var(--surface-2); }
.row .name { font-weight: 550; display: flex; align-items: center; gap: 10px; min-width: 0; }
.row .name span.t { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .url { color: var(--muted); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.row .num { text-align: right; font-variant-numeric: tabular-nums; font-size: 14px; }
.row .num small { display: block; color: var(--muted); font-size: 11px; }

.dot { width: 10px; height: 10px; border-radius: 50%; flex: none; background: var(--unknown); }
.dot.up { background: var(--up); }
.dot.degraded { background: var(--degraded); }
.dot.down { background: var(--down); box-shadow: 0 0 0 4px color-mix(in srgb, var(--down) 22%, transparent); }
.dot.paused { background: transparent; border: 2px solid var(--unknown); }

.pill { display: inline-block; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; text-transform: capitalize; }
.pill.up { color: var(--up); background: color-mix(in srgb, var(--up) 14%, transparent); }
.pill.degraded { color: var(--degraded); background: color-mix(in srgb, var(--degraded) 16%, transparent); }
.pill.down { color: var(--down); background: color-mix(in srgb, var(--down) 14%, transparent); }
.pill.unknown, .pill.paused, .pill.resolved { color: var(--muted); background: var(--surface-2); }
.pill.open { color: var(--down); background: color-mix(in srgb, var(--down) 14%, transparent); }

/* Uptime bars */
.bars { display: flex; gap: 2px; height: 26px; align-items: stretch; }
.bars i { flex: 1; border-radius: 2px; background: var(--surface-2); min-width: 2px; }
.bars i.up { background: var(--up); }
.bars i.degraded { background: var(--degraded); }
.bars i.down { background: var(--down); }
.bars i.partial { background: linear-gradient(var(--down) 0 35%, var(--up) 35%); }

/* Cards / detail */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 16px; }
.kv { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.kv div b { display: block; font-size: 20px; font-variant-numeric: tabular-nums; }
.kv div span { color: var(--muted); font-size: 13px; }
.chart { width: 100%; height: 160px; display: block; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 1.5; }
.chart .area { fill: color-mix(in srgb, var(--accent) 12%, transparent); }
.chart .fail { fill: var(--down); }
.chart .axis { fill: var(--muted); font-size: 10px; }
.chart .grid { stroke: var(--border); stroke-dasharray: 2 3; }
.err { color: var(--down); font-size: 13px; word-break: break-word; }
.mono { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; word-break: break-all; }

table.plain { width: 100%; border-collapse: collapse; font-size: 14px; }
table.plain th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12px; padding: 6px 8px; border-bottom: 1px solid var(--border); }
table.plain td { padding: 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
table.plain tr:last-child td { border-bottom: 0; }

/* Forms */
form.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 16px; }
form .full { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 550; }
label .hint { font-weight: 400; color: var(--muted); font-size: 12px; }
input, select, textarea {
  font: inherit; font-size: 14px; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; width: 100%;
}
textarea { min-height: 70px; resize: vertical; font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 13px; }
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); border-color: var(--accent); }
.check { flex-direction: row; align-items: center; gap: 8px; font-weight: 500; }
.check input { width: auto; }
fieldset { border: 0; padding: 0; margin: 0; display: contents; }
.test-result { font-size: 14px; padding: 10px 12px; border-radius: 8px; background: var(--surface-2); }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 14px;
  opacity: 0; pointer-events: none; transition: .2s; max-width: calc(100% - 32px);
}
#toast.show { opacity: 1; transform: translateX(-50%); }

@media (max-width: 720px) {
  .summary { grid-template-columns: repeat(2, 1fr); }
  .row { grid-template-columns: minmax(0, 1fr) 64px; gap: 8px 12px; }
  .row .bars { grid-column: 1 / -1; grid-row: 2; height: 18px; }
  .row .num.resp { display: none; }
  .kv { grid-template-columns: repeat(2, 1fr); }
  form.grid { grid-template-columns: 1fr; }
  .hide-sm { display: none; }
}
@media (max-width: 440px) {
  .brand-text { display: none; }
}