:root {
  --bg: #0b0f17;
  --bg-soft: #121826;
  --card: #161d2d;
  --border: #232c40;
  --text: #e6eaf2;
  --muted: #8b97ad;
  --accent: #4f8cff;
  --accent-2: #7c5cff;
  --ok: #2ecc71;
  --warn: #f5a623;
  --danger: #ff5c5c;
  --radius: 12px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 20% -10%, #1a2236 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.55;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 20px 60px; }
.narrow { max-width: 440px; }

/* Topbar */
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 20px;
  background: rgba(18, 24, 38, .8);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; letter-spacing: .3px; }
.brand span { color: var(--accent); }
.topbar nav { display: flex; gap: 16px; font-size: 14px; }

/* Cards */
.card {
  background: linear-gradient(180deg, var(--card), var(--bg-soft));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  margin-bottom: 18px;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { border-color: #2d3a55; }

h1 { font-size: 26px; margin: 0 0 6px; }
h2 { font-size: 18px; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 0 0 22px; font-size: 15px; }

/* Grid stat */
.grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat .k { color: var(--muted); font-size: 13px; }
.stat .v { font-size: 24px; font-weight: 700; margin-top: 6px; }

/* Form */
label { display: block; font-size: 13px; color: var(--muted); margin: 14px 0 6px; }
input, select {
  width: 100%; padding: 11px 13px;
  background: #0e1420; color: var(--text);
  border: 1px solid var(--border); border-radius: 9px;
  font-size: 15px; font-family: inherit;
}
input:focus { outline: none; border-color: var(--accent); }
input.mono { font-family: var(--mono); font-size: 13px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 9px; border: 1px solid var(--border);
  background: #1d2740; color: var(--text); font-size: 15px;
  cursor: pointer; font-family: inherit; font-weight: 600;
}
.btn:hover { border-color: #38476a; }
.btn.primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); border: none; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.small { padding: 7px 12px; font-size: 13px; }
.btn.danger { background: #3a1c22; border-color: #5c2a33; color: #ffb3b3; }
.btn.danger:hover { background: #4a2229; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

.row-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

/* Table */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 11px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .4px; }
tr:hover td { background: #141b2b; }

.mono { font-family: var(--mono); font-size: 13px; }
.muted { color: var(--muted); }
.tag { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 12px; font-weight: 600; }
.tag.ok { background: #14361f; color: #6ee7a0; }
.tag.off { background: #3a1c22; color: #ff9c9c; }

.alert { padding: 12px 14px; border-radius: 9px; font-size: 14px; margin: 12px 0; }
.alert.err { background: #3a1c22; border: 1px solid #5c2a33; color: #ffb3b3; }
.alert.ok { background: #14361f; border: 1px solid #1f5c34; color: #8ff0b6; }

code, pre {
  font-family: var(--mono); font-size: 13px;
  background: #0e1420; border: 1px solid var(--border); border-radius: 8px;
}
code { padding: 2px 6px; }
pre { padding: 14px; overflow-x: auto; }

.hidden { display: none !important; }
.center { text-align: center; }