:root {
  --bg: #f4f5f7; --surface: #ffffff; --surface-2: #f0f2f5; --border: #e1e4e8;
  --text: #1b1f24; --muted: #646b75; --accent: #2563eb; --accent-text: #ffffff;
  --up: #16a34a; --down: #dc2626; --partial: #d97706; --unknown: #9aa1ab;
  --up-bg: #e8f6ed; --down-bg: #fdecec; --partial-bg: #fdf3e3; --unknown-bg: #eef0f2;
  --regional: #a16207; --regional-bg: #fef9c3;
  --radius: 10px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 1px 6px rgba(0,0,0,.04);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --surface: #171b21; --surface-2: #1f242c; --border: #2a3039;
    --text: #e6e8eb; --muted: #9098a3; --accent: #4f8cff; --accent-text: #0b0d10;
    --up: #34c66b; --down: #f05252; --partial: #f0a33a; --unknown: #6b7380;
    --up-bg: #15291d; --down-bg: #331a1a; --partial-bg: #33270f; --unknown-bg: #22272e;
    --regional: #facc15; --regional-bg: #2f2a0c;
    --shadow: none;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.45 -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1100px; margin: 0 auto; padding: 24px 16px 48px; }
header.top { display: flex; align-items: center; justify-content: space-between; gap: 8px 12px; margin-bottom: 20px;
  flex-wrap: wrap; }
header.top h1 { font-size: 20px; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px; min-width: 0; }
.banner { display: flex; align-items: center; gap: 12px; padding: 16px 18px; border-radius: var(--radius);
  font-weight: 600; margin-bottom: 20px; }
.banner.up { background: var(--up-bg); color: var(--up); }
.banner.down { background: var(--down-bg); color: var(--down); }
.banner.partial { background: var(--partial-bg); color: var(--partial); }
.banner.unknown { background: var(--unknown-bg); color: var(--muted); }
.banner.regional { background: var(--regional-bg); color: var(--regional); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex: none; background: var(--unknown); }
.dot.up { background: var(--up); } .dot.down { background: var(--down); } .dot.partial { background: var(--partial); }
.dot.regional { background: var(--regional); }
.pill { display: inline-flex; align-items: center; gap: 6px; padding: 2px 10px; border-radius: 99px;
  font-size: 13px; font-weight: 600; white-space: nowrap; }
.pill.up { background: var(--up-bg); color: var(--up); } .pill.down { background: var(--down-bg); color: var(--down); }
.pill.partial { background: var(--partial-bg); color: var(--partial); } .pill.unknown { background: var(--unknown-bg); color: var(--muted); }
.pill.regional { background: var(--regional-bg); color: var(--regional); }
.regions { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.region { font-size: 12px; padding: 3px 9px; border-radius: 6px; background: var(--up-bg); color: var(--up);
  max-width: 100%; overflow-wrap: anywhere; }
.region.bad { background: var(--down-bg); color: var(--down); }
.region.none { background: var(--unknown-bg); color: var(--muted); }
.region small { opacity: .75; }
.sites { display: grid; gap: 12px; grid-template-columns: minmax(0, 1fr); }
.site-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px 12px; flex-wrap: wrap; }
.site-head > div { min-width: 0; }
.site-name { font-weight: 600; font-size: 16px; }
.site-url { font-size: 13px; color: var(--muted); word-break: break-all; }
.metrics { display: flex; gap: 20px; flex-wrap: wrap; margin: 12px 0 8px; font-size: 13px; color: var(--muted); }
.metrics b { color: var(--text); font-weight: 600; }
.bars { display: flex; gap: 2px; height: 28px; align-items: stretch; }
.bars span { flex: 1; border-radius: 2px; background: var(--unknown-bg); min-width: 2px; }
.bars span.up { background: var(--up); } .bars span.down { background: var(--down); }
.bars span.mixed { background: var(--partial); }
.bars-legend { display: flex; justify-content: space-between; font-size: 12px; color: var(--muted); margin-top: 4px; }
.ext { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-size: 13px; }
.ext > span { min-width: 0; overflow-wrap: anywhere; }
.ext .src { color: var(--muted); }
h2 { font-size: 16px; margin: 28px 0 12px; }
.events { list-style: none; padding: 0; margin: 0; }
.events li { border-bottom: 1px solid var(--border); font-size: 14px; }
.events li:last-child { border-bottom: 0; }
.events li.muted { padding: 10px 0; }
.ev-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 2px 10px; padding: 10px 0; min-width: 0; }
div.ev-head { padding-left: 18px; }
summary.ev-head { cursor: pointer; list-style: none; padding-left: 18px; position: relative; }
summary.ev-head::-webkit-details-marker { display: none; }
summary.ev-head::before { content: "›"; position: absolute; left: 2px; top: 9px; color: var(--muted);
  transition: transform .15s; font-weight: 600; }
details[open] > summary.ev-head::before { transform: rotate(90deg); }
summary.ev-head:hover .ev-title { color: var(--accent); }
.ev-time { font-size: 12px; color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.ev-kind { font-size: 11px; padding: 1px 8px; border-radius: 99px; background: var(--unknown-bg); color: var(--muted); white-space: nowrap; }
.ev-kind.down { background: var(--down-bg); color: var(--down); }
.ev-kind.partial { background: var(--partial-bg); color: var(--partial); }
.ev-kind.regional { background: var(--regional-bg); color: var(--regional); }
.ev-kind.recovered { background: var(--up-bg); color: var(--up); }
.ev-kind.error { background: var(--down-bg); color: var(--down); }
.ev-title { flex: 1 1 260px; min-width: 0; overflow-wrap: anywhere; }
.ev-body { white-space: pre-line; overflow-wrap: anywhere; font-size: 13px; color: var(--muted);
  padding: 0 0 12px 18px; }
.btn.more { width: 100%; justify-content: center; margin-top: 10px; }
/* admin */
nav.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 18px; overflow-x: auto; }
nav.tabs button { background: none; border: 0; border-bottom: 2px solid transparent; padding: 10px 14px;
  color: var(--muted); font: inherit; cursor: pointer; white-space: nowrap; }
nav.tabs button.active { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
select { padding: 7px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font: inherit; font-size: 14px; }
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 8px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); font: inherit; font-size: 14px; cursor: pointer; }
.btn:hover { background: var(--surface-2); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.danger { color: var(--down); }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn:disabled { opacity: .55; cursor: default; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 13px; }
td.actions { white-space: nowrap; text-align: right; }
.table-wrap { overflow-x: auto; }
form.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 16px; }
form.grid .full { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); font-size: 14px; }
input[type=text], input[type=password], input[type=number], input[type=url] {
  padding: 8px 10px; border-radius: 8px; border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font: inherit; font-size: 14px; width: 100%; }
input:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.hint { font-size: 12px; color: var(--muted); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
dialog { border: 1px solid var(--border); border-radius: 12px; background: var(--surface); color: var(--text);
  padding: 20px; width: min(640px, calc(100vw - 32px)); max-height: calc(100vh - 48px); }
dialog::backdrop { background: rgba(0,0,0,.4); }
dialog h3 { margin: 0 0 14px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 8px; font-size: 14px; z-index: 10; max-width: calc(100vw - 32px); }
.login { max-width: 360px; margin: 12vh auto 0; }
.stack > * + * { margin-top: 12px; }
.result-list { list-style: none; padding: 0; margin: 0; }
.result-list li { padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.nodes { margin: 6px 0 0 18px; font-size: 13px; color: var(--muted); }
.pages-box { display: flex; flex-direction: column; gap: 8px; padding: 12px; border: 1px solid var(--border);
  border-radius: 8px; background: var(--surface-2); }
.pages-box .result-list li { display: flex; align-items: center; gap: 8px; padding: 6px 0; }
.pages-box .result-list a { word-break: break-all; }
.tag { font-size: 11px; padding: 1px 7px; border-radius: 99px; background: var(--unknown-bg); color: var(--muted); white-space: nowrap; }
.tag.good { background: var(--up-bg); color: var(--up); }
@media (max-width: 640px) {
  .wrap { padding: 16px 16px 40px; }
  header.top h1 { font-size: 18px; }
  h2 { margin: 22px 0 10px; }
  .card { padding: 12px; }
  .banner { padding: 12px 14px; margin-bottom: 14px; }
  .metrics { gap: 4px 14px; }
  .bars { gap: 1px; height: 24px; }
  .bars span { min-width: 1px; }
  .regions { gap: 4px; }
  .region { font-size: 11.5px; padding: 2px 7px; }
  .ext { gap: 4px 12px; }
  form.grid { grid-template-columns: 1fr; }
  .hide-sm { display: none; }
  dialog { padding: 16px; width: calc(100vw - 24px); max-height: calc(100vh - 24px); }
  /* tables become stacked cards: first two cells side by side, actions on their own line */
  table.stack thead { display: none; }
  table.stack tr { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; padding: 12px 0;
    border-bottom: 1px solid var(--border); }
  table.stack tr:last-child { border-bottom: 0; }
  table.stack td { display: block; padding: 0; border: 0; min-width: 0; overflow-wrap: anywhere; }
  table.stack td.hide-sm { display: none; }
  table.stack td[colspan] { grid-column: 1 / -1; }
  table.stack td.actions { grid-column: 1 / -1; text-align: left; white-space: normal; display: flex; flex-wrap: wrap; gap: 6px; }
  table.stack td[data-label] { display: flex; align-items: center; gap: 6px; }
  table.stack td[data-label]::before { content: attr(data-label); color: var(--muted); font-size: 13px; }
  .card.table-wrap { padding-top: 0; padding-bottom: 0; }
}