:root {
  --bg: #0a0d12; --surface: #11161d; --surface-2: #171e27; --line: #232c38;
  --text: #e6edf3; --muted: #8b97a6; --accent: #4fd1a5; --accent-ink: #04140e;
  --warn: #f0b552; --bad: #f2777a; --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 15px/1.55 Inter, system-ui, -apple-system, "Segoe UI", sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 1100px; margin: 0 auto; padding: 32px 16px 80px; }
h1 { font-size: 26px; letter-spacing: -0.01em; margin: 8px 0 4px; }
h2 { font-size: 17px; margin: 28px 0 12px; }
h3 { font-size: 15px; margin: 0 0 4px; }
section { margin-top: 12px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.mono, code, pre { font-family: var(--mono); font-size: 13px; }
pre { background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 12px; overflow-x: auto; }
.hash { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); }

nav.top { display: flex; align-items: center; gap: 24px; padding: 12px 24px;
  border-bottom: 1px solid var(--line); background: var(--surface); flex-wrap: wrap; }
nav.top .links { display: flex; gap: 18px; flex: 1; }
nav.top .links a { color: var(--muted); }
nav.top .links a:hover { color: var(--text); text-decoration: none; }
nav.top form { display: flex; align-items: center; gap: 12px; margin: 0; }
.who { color: var(--muted); font-size: 13px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 650; letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.brand .sub { color: var(--muted); font-weight: 400; }
.brand.big { font-size: 22px; justify-content: center; margin-bottom: 18px; }
.mark { width: 26px; height: 26px; display: block; }
.brand.big .logo { width: 200px; height: auto; display: block; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 20px; margin-bottom: 16px; }
.card h2 { margin-top: 0; }
.card.narrow { max-width: 440px; }
.prose h2 { margin-top: 24px; }
.prose h2:first-child { margin-top: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.span2 { grid-column: span 2; }
@media (max-width: 760px) { .grid2, .grid4 { grid-template-columns: 1fr; } .span2 { grid-column: auto; } }

label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--muted); margin-bottom: 14px; }
label.check { flex-direction: row; align-items: center; gap: 8px; }
input, select { background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 9px 11px; font: inherit; }
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: transparent; }
.btn { display: inline-block; background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px;
  padding: 9px 16px; font: inherit; font-weight: 600; cursor: pointer; }
.btn:hover { filter: brightness(1.08); text-decoration: none; }
.btn.small { padding: 5px 10px; font-size: 13px; }
.btn.ghost { background: transparent; color: var(--muted); border: 1px solid var(--line); }
button.link { background: none; border: 0; color: var(--muted); font: inherit; cursor: pointer; padding: 0; }
button.link:hover { color: var(--text); }
form.inline { display: inline; margin-left: 6px; }

.table { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); font-weight: 600; }
tr:last-child td { border-bottom: 0; }
.card .table { background: transparent; }

.badge { display: inline-block; padding: 2px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.ok { background: rgba(79, 209, 165, .14); color: var(--accent); }
.badge.warn { background: rgba(240, 181, 82, .14); color: var(--warn); }
.badge.bad { background: rgba(242, 119, 122, .14); color: var(--bad); }
.badge.muted { background: var(--surface-2); color: var(--muted); }
.tag { display: inline-block; padding: 1px 7px; border: 1px solid var(--line); border-radius: 6px;
  font-size: 11px; color: var(--muted); font-weight: 500; vertical-align: middle; }

.flash { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; border: 1px solid; }
.flash.ok { border-color: rgba(79, 209, 165, .4); background: rgba(79, 209, 165, .08); }
.flash.warn { border-color: rgba(240, 181, 82, .4); background: rgba(240, 181, 82, .08); }
.flash.bad { border-color: rgba(242, 119, 122, .4); background: rgba(242, 119, 122, .08); }

.auth { max-width: 400px; margin: 9vh auto 0; text-align: center; }
.auth h1 { font-size: 18px; font-weight: 500; color: var(--muted); margin-bottom: 20px; }
.auth form { text-align: left; }
.auth .btn { width: 100%; margin-top: 4px; }

/* fleet console */
textarea { background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 8px;
  padding: 10px 12px; font: inherit; resize: vertical; }
.stat .v { font-size: 26px; font-weight: 650; letter-spacing: -0.02em; }
.stat .l { color: var(--muted); font-size: 13px; margin-top: 4px; }
dl.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 18px; margin: 0; font-size: 14px; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; }
svg.bars { width: 100%; height: auto; display: block; }
svg.bars rect.req { fill: var(--line); }
svg.bars rect.blk { fill: var(--bad); }
svg.bars text.axis { fill: var(--muted); font-size: 10px; }
@media (max-width: 760px) { .grid4 { grid-template-columns: 1fr 1fr; } }