:root {
  --azul: #0099ff; --azul-glow: rgba(0,153,255,0.45);
  --fondo: #0a0d10; --panel: #10151a; --panel-borde: rgba(0,153,255,0.18);
  --texto: #e8eef4; --texto-suave: #8a98a8;
  --verde: #00e676; --rojo: #ff3b3b; --amarillo: #ffb300;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100vh; background: var(--fondo); color: var(--texto); font-family: -apple-system, 'Segoe UI', Roboto, Arial, sans-serif; }
a { color: var(--azul); }
.digital { font-variant-numeric: tabular-nums; }
.btn { border: 1px solid var(--azul); background: var(--azul); color: #fff; border-radius: 8px; padding: 10px 16px; font-size: 14px; font-weight: 600; cursor: pointer; }
.btn:disabled { opacity: .5; cursor: default; }
.btn-outline { background: transparent; color: var(--azul); }
.btn-peligro { background: var(--rojo); border-color: var(--rojo); }
.btn-chico { padding: 6px 10px; font-size: 12.5px; }
.campo { margin-bottom: 12px; }
.campo label { display: block; font-size: 12px; color: var(--texto-suave); margin-bottom: 4px; letter-spacing: .5px; }
.campo input { width: 100%; padding: 10px 12px; background: #0b0f13; color: var(--texto); border: 1px solid rgba(255,255,255,0.14); border-radius: 8px; font-size: 14px; }
.campo input:focus { outline: none; border-color: var(--azul); box-shadow: 0 0 0 3px rgba(0,153,255,0.2); }
.error-msg { background: rgba(255,59,59,.12); border: 1px solid rgba(255,59,59,.4); color: #ffb3b3; padding: 10px 12px; border-radius: 8px; font-size: 13.5px; margin-bottom: 12px; }
.ok-msg { background: rgba(0,230,118,.12); border: 1px solid rgba(0,230,118,.4); color: #b6f5d3; padding: 10px 12px; border-radius: 8px; font-size: 13.5px; margin-bottom: 12px; }

/* Login */
.login-caja { max-width: 380px; margin: 10vh auto 0; padding: 28px 24px; background: var(--panel); border: 1px solid var(--panel-borde); border-radius: 16px; box-shadow: 0 0 40px var(--azul-glow); }
.login-marca { text-align: center; margin-bottom: 20px; }
.login-marca h1 { margin: 10px 0 2px; font-size: 22px; letter-spacing: 3px; color: var(--azul); }
.login-marca p { margin: 0; font-size: 12.5px; color: var(--texto-suave); }

/* Encabezado fijo */
.top { position: sticky; top: 0; z-index: 30; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding: 12px 24px; background: rgba(10,13,16,.96); border-bottom: 1px solid rgba(0,153,255,.25); backdrop-filter: blur(6px); }
.marca { display: flex; align-items: center; gap: 10px; }
.marca h1 { margin: 0; font-size: 18px; letter-spacing: 3px; color: var(--azul); }
.marca small { display: block; font-size: 11px; color: var(--texto-suave); letter-spacing: 1px; }
.top-der { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.reloj { font-size: 22px; font-weight: 800; letter-spacing: 2px; }
.contenedor { max-width: 1200px; margin: 0 auto; padding: 20px 24px 60px; }

/* Estado grande */
.estado-grande { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; padding: 20px 22px; border-radius: 14px; border: 2px solid var(--verde); background: rgba(0,230,118,.07); margin-bottom: 16px; }
.estado-grande.caida { border-color: var(--rojo); background: rgba(255,59,59,.09); animation: latir 1.4s ease-in-out infinite; }
.estado-grande.aviso { border-color: var(--amarillo); background: rgba(255,179,0,.08); }
@keyframes latir { 50% { box-shadow: 0 0 28px rgba(255,59,59,.55); } }
.estado-punto { width: 22px; height: 22px; border-radius: 50%; background: var(--verde); box-shadow: 0 0 14px var(--verde); flex-shrink: 0; }
.caida .estado-punto { background: var(--rojo); box-shadow: 0 0 14px var(--rojo); }
.aviso .estado-punto { background: var(--amarillo); box-shadow: 0 0 14px var(--amarillo); }
.estado-titulo { font-size: 24px; font-weight: 800; letter-spacing: 1px; }
.estado-sub { color: var(--texto-suave); font-size: 13.5px; margin-top: 4px; }
.estado-acciones { margin-left: auto; display: flex; gap: 8px; flex-wrap: wrap; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--panel); border: 1px solid var(--panel-borde); border-radius: 12px; padding: 14px; }
.kpi .num { font-size: 26px; font-weight: 800; }
.kpi .etq { font-size: 11.5px; color: var(--texto-suave); letter-spacing: .5px; margin-top: 2px; }
.kpi .det { font-size: 12px; color: var(--texto-suave); margin-top: 6px; }

.tarjeta { background: var(--panel); border: 1px solid var(--panel-borde); border-radius: 12px; padding: 16px; margin-bottom: 16px; }
.tarjeta h2 { margin: 0 0 4px; font-size: 15px; letter-spacing: 1px; }
.tarjeta .sub { color: var(--texto-suave); font-size: 12.5px; margin: 0 0 12px; }
.fila-tit { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; }
.tabs button.activo { background: var(--azul); color: #fff; }

.medidores { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; }
.medidor .etq { font-size: 12px; color: var(--texto-suave); display: flex; justify-content: space-between; }
.barra { height: 8px; background: rgba(255,255,255,.08); border-radius: 4px; margin-top: 6px; overflow: hidden; }
.barra > span { display: block; height: 100%; border-radius: 4px; background: var(--azul); }

.grafico-wrap { position: relative; }
.grafico svg { width: 100%; height: auto; display: block; }
.tooltip { position: absolute; pointer-events: none; background: #0b0f13; border: 1px solid var(--panel-borde); border-radius: 8px; padding: 6px 9px; font-size: 12px; white-space: nowrap; transform: translate(-50%, -110%); display: none; }

.tabla-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { text-align: left; color: var(--texto-suave); font-weight: 600; font-size: 11.5px; letter-spacing: .5px; padding: 8px; border-bottom: 1px solid rgba(255,255,255,.08); }
td { padding: 8px; border-bottom: 1px solid rgba(255,255,255,.05); vertical-align: top; }
.vacio { color: var(--texto-suave); font-size: 13px; padding: 8px 0; }
.etiqueta { display: inline-block; padding: 2px 8px; border-radius: 10px; font-size: 11.5px; font-weight: 600; }
.e-rojo { background: rgba(255,59,59,.15); color: #ff8f8f; }
.e-verde { background: rgba(0,230,118,.12); color: #7ff0b4; }
.e-gris { background: rgba(255,255,255,.08); color: var(--texto-suave); }

.modal-overlay { position: fixed; inset: 0; background: rgba(3,5,7,.75); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 16px; }
.modal { width: 100%; max-width: 440px; background: var(--panel); border: 1px solid var(--panel-borde); border-radius: 14px; padding: 20px; max-height: 90vh; overflow-y: auto; }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
.modal-header h3 { margin: 0; font-size: 16px; }
.cerrar-x { background: none; border: none; color: var(--texto-suave); font-size: 20px; cursor: pointer; }
.modal-pie { display: flex; justify-content: flex-end; gap: 8px; margin-top: 14px; }

@media (max-width: 640px) {
  .top { padding: 10px 16px; }
  .contenedor { padding: 16px; }
  .reloj { font-size: 18px; }
  .estado-titulo { font-size: 19px; }
  .estado-acciones { margin-left: 0; }
}