:root {
  --bg: #0b1220;
  --panel: #111a2e;
  --panel-2: #16213a;
  --borde: #22304d;
  --texto: #e6ecf7;
  --texto-suave: #93a0bd;
  --acento: #3b82f6;
  --acento-2: #6366f1;
  --verde: #22c55e;
  --rojo: #ef4444;
  --amarillo: #f59e0b;
  --radio: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--texto);
}

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

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: linear-gradient(135deg, var(--acento), var(--acento-2));
  color: #fff; display: grid; place-items: center; font-weight: 700;
}
.brand small { display: block; color: var(--texto-suave); font-size: 12px; }

.card {
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 26px;
}

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--texto); }
.field input {
  width: 100%; padding: 11px 14px; border-radius: 10px;
  border: 1px solid var(--borde); background: var(--panel-2); color: var(--texto); font-size: 14px;
}
.field input:focus { outline: 2px solid var(--acento); outline-offset: 1px; }

.primary {
  background: var(--acento); color: #fff; border: none; border-radius: 10px;
  padding: 12px 18px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.primary:hover { background: #2563eb; }

.error-box {
  background: rgba(239,68,68,.1); border: 1px solid rgba(239,68,68,.35); color: #fca5a5;
  border-radius: var(--radio); padding: 12px 14px; margin-bottom: 16px; font-size: 13px;
}

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.good { background: rgba(34,197,94,.15); color: #4ade80; }
.badge.bad { background: rgba(239,68,68,.15); color: #f87171; }
.badge.warn { background: rgba(245,158,11,.15); color: #fbbf24; }

.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 230px; background: var(--panel); border-right: 1px solid var(--borde); padding: 20px 14px; flex-shrink: 0; }
.sidebar a { display: block; color: var(--texto-suave); padding: 10px 12px; border-radius: 10px; font-size: 14px; margin-bottom: 2px; }
.sidebar a:hover, .sidebar a.active { background: rgba(59,130,246,.12); color: #fff; text-decoration: none; }

.topbar { display: flex; justify-content: space-between; align-items: center; padding: 16px 28px; background: var(--panel); border-bottom: 1px solid var(--borde); }
.content { flex: 1; padding: 28px; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 24px; }
.stat-card { background: var(--panel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 20px; }
.stat-card .valor { font-size: 28px; font-weight: 700; }
.stat-card .etiqueta { color: var(--texto-suave); font-size: 13px; }

table { width: 100%; border-collapse: collapse; }
th { text-align: left; background: var(--panel-2); color: var(--texto); padding: 12px; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td { padding: 12px; border-bottom: 1px solid var(--borde); font-size: 14px; }

.search-bar { display: flex; gap: 10px; margin-bottom: 16px; }
.search-bar input {
  flex: 1; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--borde);
  background: var(--panel-2); color: var(--texto); font-size: 14px;
}