:root {
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --bg: #f7f7f7;
  --panel: #ffffff;
  --ink: #141414;
  --muted: #767676;
  --line: #e4e4e4;
  --line-strong: #cfcfcf;
  --track: #ededed;
}
:root[data-theme="dark"] {
  --bg: #0d0d0d; --panel: #151515; --ink: #ececec; --muted: #8a8a8a;
  --line: #262626; --line-strong: #3a3a3a; --track: #242424;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease, color .3s ease;
}
.banner, .card, .incidents { transition: background-color .3s ease, border-color .3s ease; }
a { color: inherit; }

.corner-logo {
  position: fixed; top: 16px; left: 20px; z-index: 10;
  height: 44px; width: auto; opacity: .95;
}
.wrap { max-width: 860px; margin: 0 auto; padding: 88px 24px 64px; }

/* ---- nav / buttons ---- */
.topnav { display: flex; justify-content: flex-end; gap: 10px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 13px/1 var(--sans); text-decoration: none;
  padding: 10px 16px; border: 1px solid var(--line-strong);
  border-radius: 8px; color: var(--ink); background: var(--panel);
  transition: border-color .15s, transform .05s;
}
.btn:hover { border-color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn--solid { background: var(--ink); color: var(--bg); border-color: var(--ink); }

/* ---- home ---- */
.home { min-height: 100vh; display: grid; place-items: center; text-align: left; }
.home-card { max-width: 620px; width: 100%; padding: 0 24px; }
.home h1 { font-size: 38px; letter-spacing: -.02em; margin: 0 0 18px; }
.home p { font-size: 17px; color: var(--muted); margin: 0 0 14px; }
.home .lead { color: var(--ink); }
.home .actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

/* ---- status header ---- */
.status-head { margin-bottom: 28px; }
.eyebrow { font: 600 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.banner {
  margin-top: 14px; padding: 22px 24px; border: 1px solid var(--line);
  border-left: 4px solid var(--ink); border-radius: 10px; background: var(--panel);
  display: flex; align-items: center; gap: 16px;
}
.banner h2 { margin: 0; font-size: 22px; letter-spacing: -.01em; }
.banner .sub { margin: 2px 0 0; font: 500 13px/1.4 var(--mono); color: var(--muted); }
.banner.is-degraded { border-left-color: var(--line-strong); }
.banner.is-outage { border-left-color: var(--muted); }
.banner.is-major { border-left-color: var(--ink); border-left-width: 6px; }

/* ---- status dot (grayscale, shape-coded) ---- */
.dot { width: 11px; height: 11px; border-radius: 50%; flex: none; display: inline-block;
  transition: background-color .4s, border-color .4s, box-shadow .4s; }
.dot.operational { background: var(--ink); box-shadow: 0 0 0 3px var(--track); }
.dot.degraded    { background: var(--muted); }
.dot.down,
.dot.outage      { background: transparent; border: 2px solid var(--ink); }
.dot.major       { background-color: var(--ink); box-shadow: 0 0 0 3px var(--track); }
.dot.unreachable { background: var(--track); border: 2px dashed var(--line-strong); }
.dot.lg { width: 16px; height: 16px; }

/* ---- node cards ---- */
.section-title { font: 600 12px/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--muted); margin: 36px 0 12px; }
.cards { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.card--wide { grid-column: 1 / -1; }
@media (max-width: 640px) { .cards { grid-template-columns: 1fr; } }
.card { border: 1px solid var(--line); border-radius: 10px; background: var(--panel); padding: 18px 20px; }
.card-top { display: flex; align-items: center; gap: 12px; }
.card-top .name { font-size: 16px; font-weight: 650; }
.card-top .role { font: 500 12px/1 var(--mono); color: var(--muted); margin-top: 3px; }
.card-top .state { margin-left: auto; font: 600 12px/1 var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.uptime-row { display: flex; gap: 22px; margin-top: 4px; font: 500 12px/1 var(--mono); color: var(--muted); }

.metrics { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 14px 22px; margin-top: 16px; }
.metric .label { font: 600 11px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.metric .value { font: 600 18px/1.2 var(--mono); margin-top: 5px; }
.metric .value small { font-size: 12px; color: var(--muted); font-weight: 500; }
.bar { height: 4px; background: var(--track); border-radius: 2px; margin-top: 8px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--ink); transition: width .6s cubic-bezier(.4, 0, .2, 1); }

.metric--cores { grid-column: 1 / -1; }
.cores { display: flex; gap: 10px; align-items: flex-end; margin-top: 10px; }
.core { display: flex; flex-direction: column; align-items: center; gap: 5px; }
.core-bar { width: 16px; height: 48px; background: var(--track); border-radius: 3px;
  display: flex; align-items: flex-end; overflow: hidden; }
.core-bar > span { display: block; width: 100%; background: var(--ink);
  transition: height .6s cubic-bezier(.4, 0, .2, 1); }
.core-pct { font: 600 10px/1 var(--mono); color: var(--muted); }

.spark { margin-top: 14px; }
.spark .cap { display: flex; justify-content: space-between; font: 600 10px/1 var(--mono);
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.spark svg { display: block; width: 100%; height: 38px; }
.spark polyline { fill: none; stroke: var(--line-strong); stroke-width: 1;
  vector-effect: non-scaling-stroke; stroke-linejoin: round; stroke-linecap: round; }

/* ---- VMs ---- */
.vms { margin-top: 16px; border-top: 1px dashed var(--line); padding-top: 12px; }
.vms .vm { display: flex; align-items: center; gap: 10px; padding: 6px 0; font: 500 13px/1.3 var(--mono); }
.vms .vm .vmid { color: var(--muted); }
.vms .vm .vmstate { margin-left: auto; color: var(--muted); text-transform: uppercase; font-size: 11px; letter-spacing: .06em; }
.vms .vm .vmmetric { color: var(--muted); }
.vms-empty { font: 500 12px/1 var(--mono); color: var(--muted); padding: 4px 0; }

/* ---- incidents ---- */
.incidents { margin-top: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.incident { display: flex; gap: 14px; padding: 14px 20px; border-top: 1px solid var(--line); }
.incident:first-child { border-top: none; }
.incident .when { font: 500 12px/1.5 var(--mono); color: var(--muted); min-width: 132px; }
.incident .body { flex: 1; }
.incident .head { font-weight: 600; font-size: 14px; }
.incident .meta { font: 500 12px/1.4 var(--mono); color: var(--muted); margin-top: 2px; }
.tag { display: inline-block; font: 600 10px/1 var(--mono); letter-spacing: .06em; text-transform: uppercase;
  border: 1px solid var(--line-strong); border-radius: 4px; padding: 3px 6px; color: var(--muted); }
.tag.ongoing { border-color: var(--ink); color: var(--ink); }
.empty { padding: 22px 20px; color: var(--muted); font: 500 13px/1 var(--mono); }

.day-group { border-top: 1px solid var(--line); }
.day-head { display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  background: none; border: 0; cursor: pointer; padding: 14px 20px; color: var(--ink); font: inherit; }
.day-head:hover { background: var(--track); }
.day-head .caret { font-size: 10px; color: var(--muted); transition: transform .2s; }
.day-group.open .caret { transform: rotate(90deg); }
.day-head .day-date { font-weight: 600; font-size: 14px; }
.day-head .day-sum { margin-left: auto; font: 500 12px/1 var(--mono); color: var(--muted); }
.day-body { display: none; }
.day-group.open .day-body { display: block; }

.foot { margin-top: 32px; display: flex; justify-content: space-between; align-items: center;
  font: 500 12px/1 var(--mono); color: var(--muted); flex-wrap: wrap; gap: 8px; }

.theme-toggle { position: fixed; top: 16px; right: 20px; z-index: 10; }
.brand-foot { display: flex; align-items: center; justify-content: center; gap: 10px;
  margin: 46px 0 12px; color: var(--muted); font: 500 12px/1 var(--mono); }
.brand-foot .brand-logo { height: 26px; opacity: .75; }