/* ERNI — minimalist monoline dashboard. Black on paper, inverted in the dark. */
:root {
  --bg: #f6f6f4;
  --paper: #ffffff;
  --ink: #141414;
  --muted: #8a8a85;
  --line: #e4e4df;
  --accent: #141414;
  --up: #1f9d55;
  --down: #d23f3f;
  --radius: 14px;
  --gap: 18px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d0d0d; --paper: #161616; --ink: #f3f3f0; --muted: #7d7d78;
    --line: #262626; --accent: #f3f3f0; --up: #41c47c; --down: #ef5a5a;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  -webkit-font-smoothing: antialiased; line-height: 1.5;
}

/* top bar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 18px clamp(16px, 5vw, 48px);
  border-bottom: 1px solid var(--line); position: sticky; top: 0;
  background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); z-index: 5;
}
.brand { color: var(--ink); display: inline-flex; text-decoration: none; }
.logo { height: 26px; width: auto; display: block; }
.wordmark {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-weight: 600; font-size: 19px; letter-spacing: -0.01em; color: currentColor;
}
.nav { display: flex; gap: clamp(10px, 3vw, 28px); flex-wrap: wrap; }
.nav a {
  color: var(--muted); text-decoration: none; font-size: 14px; letter-spacing: .02em;
  padding: 6px 2px; border-bottom: 2px solid transparent; transition: color .15s, border-color .15s;
}
.nav a:hover { color: var(--ink); }
.nav a.on { color: var(--ink); border-color: var(--ink); }

/* layout */
.wrap { max-width: 920px; margin: 0 auto; padding: clamp(24px, 5vw, 44px) clamp(16px, 5vw, 48px); }
.foot {
  max-width: 920px; margin: 0 auto; padding: 24px clamp(16px, 5vw, 48px) 48px;
  display: flex; justify-content: space-between; font-size: 13px; color: var(--muted);
  border-top: 1px solid var(--line);
}

/* flashes */
.flashes { max-width: 920px; margin: 16px auto -8px; padding: 0 clamp(16px, 5vw, 48px); }
.flash {
  border: 1px solid var(--line); background: var(--paper); border-radius: 10px;
  padding: 10px 14px; font-size: 14px; margin-bottom: 8px;
}
.flash.success { border-color: color-mix(in srgb, var(--up) 40%, var(--line)); }

/* hero */
.hero { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: 12px; color: var(--muted); margin: 0 0 6px; }
.status { font-size: clamp(38px, 9vw, 60px); margin: 0; font-weight: 600; letter-spacing: -.02em; }
.status.up { color: var(--up); }
.status.down { color: var(--down); }
.status.inline { font-size: 16px; padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; }
.pulse { width: 16px; height: 16px; border-radius: 50%; background: var(--up); box-shadow: 0 0 0 0 currentColor; }
.pulse.up { color: var(--up); background: var(--up); animation: pulse 2.4s infinite; }
.pulse.down { color: var(--down); background: var(--down); }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--up) 55%, transparent); } 70% { box-shadow: 0 0 0 16px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

/* page head */
.pagehead { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 26px; gap: 16px; }
.pagehead h1 { margin: 0; font-size: clamp(26px, 6vw, 36px); letter-spacing: -.02em; }

/* cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: var(--gap); }
.grid.three { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.card {
  background: var(--paper); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px 22px;
}
.card.wide { grid-column: 1 / -1; }
.label { text-transform: uppercase; letter-spacing: .1em; font-size: 11px; color: var(--muted); margin: 0 0 12px; }
.metric { font-size: clamp(26px, 5vw, 34px); margin: 0; font-weight: 600; letter-spacing: -.01em; }
.sub { margin: 8px 0 0; color: var(--muted); font-size: 13px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.small { font-size: 12px; }
.muted { color: var(--muted); }

/* actions */
.row { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.action {
  display: inline-block; text-decoration: none; color: var(--bg); background: var(--accent);
  padding: 11px 18px; border-radius: 999px; font-size: 14px; border: 1px solid var(--accent);
  transition: opacity .15s;
}
.action:hover { opacity: .85; }
.action.ghost { background: transparent; color: var(--ink); border-color: var(--line); }

/* chart */
.chart { margin-top: var(--gap); }
.spark { width: 100%; height: 110px; color: var(--ink); display: block; margin-top: 8px; }

/* device table */
.table { margin-top: 8px; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--paper); }
.thead, summary {
  display: grid; grid-template-columns: 2fr 1.1fr 1.4fr 1fr auto; gap: 12px; align-items: center;
  padding: 13px 18px;
}
.thead { font-size: 11px; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); border-bottom: 1px solid var(--line); }
.trow { border-bottom: 1px solid var(--line); }
.trow:last-child { border-bottom: 0; }
summary { cursor: pointer; list-style: none; }
summary::-webkit-details-marker { display: none; }
.trow:hover summary { background: color-mix(in srgb, var(--ink) 3%, transparent); }
.name { display: inline-flex; align-items: center; gap: 9px; font-weight: 500; }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dot.on { background: var(--up); }
.dot.off { background: var(--line); border: 1px solid var(--muted); }
.tag { font-style: normal; font-size: 10px; text-transform: uppercase; letter-spacing: .08em; color: var(--muted); border: 1px solid var(--line); padding: 1px 6px; border-radius: 6px; }
.chev { color: var(--muted); font-size: 12px; text-align: right; }
.editrow { display: flex; gap: 10px; align-items: center; padding: 0 18px 16px; flex-wrap: wrap; }
.editrow input[type=text] { flex: 1; min-width: 160px; padding: 9px 12px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg); color: var(--ink); font-size: 14px; }
.check { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.editrow button { padding: 9px 16px; border-radius: 9px; border: 1px solid var(--accent); background: var(--accent); color: var(--bg); font-size: 14px; cursor: pointer; }

/* notes / empty */
.note h2 { margin: 0 0 10px; font-size: 18px; }
.note ul { margin: 10px 0; padding-left: 20px; }
.note li { margin: 5px 0; }
.note a { color: var(--ink); }
.empty { text-align: center; padding: 48px 20px; color: var(--muted); border: 1px dashed var(--line); border-radius: var(--radius); margin-top: 12px; }

/* logout + login */
.logout-form { display: inline; }
.logout-form button {
  background: none; border: 0; color: var(--muted); font: inherit; font-size: 14px;
  letter-spacing: .02em; cursor: pointer; padding: 6px 2px;
}
.logout-form button:hover { color: var(--ink); }
.login-body { display: grid; place-items: center; min-height: 100vh; }
.login { width: min(340px, 90vw); text-align: center; }
.brand.big { display: block; margin-bottom: 18px; color: var(--ink); }
.brand.big .logo { height: 40px; margin: 0 auto; }
.brand.big .wordmark { font-size: 30px; }
.eyebrow.center { text-align: center; margin-bottom: 24px; }
.login form { display: flex; flex-direction: column; gap: 10px; }
.login input {
  padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  background: var(--paper); color: var(--ink); font-size: 15px;
}
.login button {
  padding: 12px; border-radius: 10px; border: 1px solid var(--accent);
  background: var(--accent); color: var(--bg); font-size: 15px; cursor: pointer; margin-top: 4px;
}
.login .flash { margin-bottom: 14px; border-color: color-mix(in srgb, var(--down) 50%, var(--line)); }

@media (max-width: 620px) {
  .thead { display: none; }
  summary { grid-template-columns: 1fr auto; row-gap: 4px; }
  summary .mono, summary .muted { grid-column: 1; font-size: 12px; }
}