:root {
  --fondo: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2330;
  --borde: #2a3342;
  --texto: #e6edf3;
  --suave: #8b98a9;
  --verde: #2ea56a;
  --amarillo: #e0a526;
  --rojo: #e5484d;
  --azul: #4c8df6;
  --gris: #6b7685;
  --radio: 14px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 10% -10%, #1b2a40 0%, transparent 60%), var(--fondo);
  color: var(--texto);
  font-size: 15px;
}
h1 { font-size: 26px; margin: 4px 0; }
h2 { font-size: 17px; margin: 0 0 6px; }
a { color: var(--azul); text-decoration: none; }
code { background: var(--panel-2); padding: 2px 6px; border-radius: 6px; font-size: 13px; }
small { color: var(--suave); display: block; font-size: 12px; }
.suave { color: var(--suave); }
.texto-ok { color: var(--verde); }
.texto-gris { color: var(--suave); }
.texto-alerta { color: var(--rojo); }
.num { text-align: right; }
.ancho { width: 100%; }
.ancho-completo { grid-column: 1 / -1; }

/* Estructura */
.marco { display: grid; grid-template-columns: 230px 1fr; min-height: 100vh; }
.menu {
  background: var(--panel); border-right: 1px solid var(--borde);
  padding: 20px 14px; display: flex; flex-direction: column; gap: 22px;
  position: sticky; top: 0; height: 100vh;
}
.marca { display: flex; gap: 10px; align-items: center; }
.marca strong { display: block; font-size: 16px; }
.marca.grande { margin-bottom: 8px; }
.logo {
  width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center;
  background: linear-gradient(135deg, #f5c542, #f08a24); font-size: 20px;
}
.menu nav { display: flex; flex-direction: column; gap: 4px; }
.menu nav a {
  color: var(--texto); padding: 10px 12px; border-radius: 10px; display: flex; gap: 10px; align-items: center;
}
.menu nav a:hover { background: var(--panel-2); }
.menu nav a.activo { background: #1f3154; color: #fff; }
.pie-menu { margin-top: auto; display: flex; flex-direction: column; gap: 12px; }
.usuario { display: flex; gap: 10px; align-items: center; }
.usuario strong { font-size: 14px; }
.avatar {
  width: 34px; height: 34px; border-radius: 50%; background: #243b5e; display: grid; place-items: center; font-weight: 700;
}
.contenido { padding: 26px 30px 60px; max-width: 1400px; width: 100%; }
.cabecera { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 18px; flex-wrap: wrap; }
.cabecera p { margin: 0; }
.volver { font-size: 13px; }

/* Tarjetas y rejillas */
.tarjeta {
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--borde); border-radius: var(--radio); padding: 18px; margin-bottom: 16px;
}
a.tarjeta { color: inherit; display: block; transition: transform .12s, border-color .12s; }
a.tarjeta:hover { transform: translateY(-2px); border-color: #3b4a61; }
.rejilla { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 16px; }
.dos-columnas { display: grid; grid-template-columns: 1.4fr 1fr; gap: 16px; align-items: start; }
.graficos { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.graficos canvas { max-height: 280px; }
.vacio { text-align: center; padding: 40px; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi {
  background: var(--panel); border: 1px solid var(--borde); border-radius: var(--radio); padding: 14px 16px;
  display: flex; flex-direction: column; gap: 4px;
}
.kpi strong { font-size: 24px; font-weight: 700; }
.kpi.alerta { border-color: rgba(229,72,77,.55); }
.kpi.aviso { border-color: rgba(224,165,38,.55); }

/* Máquina */
.maquina-cab { display: flex; justify-content: space-between; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.maquina.desconectada { opacity: .75; }
.maquina.bloqueada { border-color: rgba(229,72,77,.6); }
.metricas { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 12px 0; }
.metricas > div { background: var(--panel); border-radius: 10px; padding: 10px 12px; }
.metricas strong { display: block; font-size: 18px; }
.pie-tarjeta { font-size: 12px; border-top: 1px solid var(--borde); padding-top: 10px; }

/* Estados, avisos, etiquetas */
.estado, .etiqueta, .pill {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  padding: 4px 10px; border-radius: 999px; white-space: nowrap;
}
.estado.verde, .etiqueta.verde { background: rgba(46,165,106,.15); color: #5ee09a; }
.estado.gris, .etiqueta.gris { background: rgba(107,118,133,.2); color: #b6c0cc; }
.etiqueta.rojo { background: rgba(229,72,77,.15); color: #ff8b8e; }
.etiqueta.azul { background: rgba(76,141,246,.18); color: #9dc2ff; }
.pill { background: var(--panel); border: 1px solid var(--borde); color: var(--suave); font-weight: 500; }
.punto { width: 9px; height: 9px; border-radius: 50%; display: inline-block; background: var(--gris); }
.punto.verde { background: var(--verde); box-shadow: 0 0 0 0 rgba(46,165,106,.6); }
.punto.gris { background: var(--gris); }
.pulso { animation: pulso 2s infinite; }
@keyframes pulso {
  0% { box-shadow: 0 0 0 0 rgba(46,165,106,.55); }
  70% { box-shadow: 0 0 0 8px rgba(46,165,106,0); }
  100% { box-shadow: 0 0 0 0 rgba(46,165,106,0); }
}
.aviso {
  border-radius: 10px; padding: 10px 12px; margin-bottom: 12px; font-size: 14px;
  display: flex; flex-direction: column; gap: 2px; border: 1px solid transparent;
}
.aviso.grande { padding: 14px 16px; margin: 0 0 16px; }
.aviso.rojo { background: rgba(229,72,77,.12); border-color: rgba(229,72,77,.35); color: #ffb3b5; }
.aviso.amarillo { background: rgba(224,165,38,.12); border-color: rgba(224,165,38,.35); color: #ffd98a; }
.aviso.verde-suave { background: rgba(46,165,106,.1); border-color: rgba(46,165,106,.3); color: #9be7bf; }

/* Barras y denominaciones */
.barra { height: 8px; background: #0b0f14; border-radius: 999px; overflow: hidden; margin: 6px 0; }
.barra span { display: block; height: 100%; background: linear-gradient(90deg, #2ea56a, #5ee09a); border-radius: 999px; }
.barra.rojo span { background: linear-gradient(90deg, #c53b3f, #ff7a7e); }
.denominaciones { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
.denom { background: var(--panel); border: 1px solid var(--borde); border-radius: 12px; padding: 12px; }
.denom.bajo { border-color: rgba(229,72,77,.55); }
.denom-cab { display: flex; justify-content: space-between; align-items: baseline; }
.chips { display: flex; gap: 6px; }
.chip { font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; }
.chip.on { background: rgba(46,165,106,.2); color: #5ee09a; }
.chip.off { background: #20262f; color: #5b6573; }

/* Tablas, listas y formularios */
.tabla-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--borde); text-align: left; vertical-align: middle; }
th { color: var(--suave); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
tr.fila-inactiva { opacity: .5; }
.acciones { display: flex; gap: 6px; justify-content: flex-end; }
.acciones form { margin: 0; }
.lista { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; font-size: 14px; }
.lista li { background: var(--panel); border-radius: 8px; padding: 8px 10px; }
.bloque { background: #0b0f14; border: 1px solid var(--borde); border-radius: 10px; padding: 12px; overflow-x: auto; font-size: 13px; }
.formulario { display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--suave); }
input, select {
  background: #0b0f14; color: var(--texto); border: 1px solid var(--borde); border-radius: 10px;
  padding: 10px 12px; font: inherit; outline: none;
}
input:focus, select:focus { border-color: var(--azul); box-shadow: 0 0 0 3px rgba(76,141,246,.2); }
.boton {
  background: linear-gradient(135deg, #3c7df0, #2b5fd0); color: #fff; border: 0; border-radius: 10px;
  padding: 10px 16px; font: inherit; font-weight: 600; cursor: pointer;
}
.boton:hover { filter: brightness(1.08); }
.boton.secundario { background: var(--panel-2); border: 1px solid var(--borde); color: var(--texto); }
.boton.peligro { background: rgba(229,72,77,.15); color: #ff8b8e; border: 1px solid rgba(229,72,77,.35); }
.boton.pequeno { padding: 6px 10px; font-size: 13px; }

/* Acceso */
.acceso { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login { width: 100%; max-width: 380px; display: flex; flex-direction: column; gap: 14px; padding: 28px; }

@media (max-width: 900px) {
  .marco { grid-template-columns: 1fr; }
  .menu { position: static; height: auto; flex-direction: row; flex-wrap: wrap; align-items: center; }
  .menu nav { flex-direction: row; }
  .pie-menu { margin-top: 0; flex-direction: row; align-items: center; }
  .dos-columnas, .graficos { grid-template-columns: 1fr; }
  .contenido { padding: 18px; }
}