:root {
  --fondo: #0d1117;
  --panel: #161b22;
  --panel-alto: #1c232c;
  --borde: #2a3441;
  --texto: #e6edf3;
  --tenue: #8b949e;
  --acento: #2f81f7;
  --acento-alto: #4d95ff;
  --ok: #3fb950;
  --aviso: #d29922;
  --error: #f85149;
  --radio: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--fondo);
  color: var(--texto);
  font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--acento); }

.envoltorio {
  max-width: 900px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

header.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
header.marca .punto {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--acento);
  box-shadow: 0 0 0 4px rgba(47, 129, 247, .18);
}
header.marca h1 { font-size: 16px; font-weight: 600; letter-spacing: -.01em; }
header.marca span { color: var(--tenue); font-size: 13px; margin-left: auto; }

.tarjeta {
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: var(--radio);
  padding: 24px;
  margin-bottom: 16px;
}

h2 { font-size: 20px; font-weight: 600; letter-spacing: -.02em; margin-bottom: 6px; }
.sub { color: var(--tenue); font-size: 14px; margin-bottom: 20px; }

label.campo { display: block; margin-bottom: 18px; }
label.campo > .et { display: block; font-size: 13px; font-weight: 500; margin-bottom: 7px; }
label.campo > .pista { display: block; font-size: 12px; color: var(--tenue); margin-top: 6px; }

select, input[type=text] {
  width: 100%;
  background: var(--fondo);
  border: 1px solid var(--borde);
  border-radius: 8px;
  color: var(--texto);
  padding: 10px 12px;
  font: inherit;
  font-size: 14px;
}
select:focus, input:focus { outline: 2px solid var(--acento); outline-offset: -1px; }

.fila { display: flex; gap: 14px; flex-wrap: wrap; }
.fila > * { flex: 1 1 200px; }

button {
  font: inherit;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 11px 18px;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
button:disabled { opacity: .5; cursor: not-allowed; }

.btn-principal { background: var(--acento); color: #fff; }
.btn-principal:not(:disabled):hover { background: var(--acento-alto); }
.btn-principal.grande { width: 100%; padding: 15px; font-size: 16px; font-weight: 600; }

.btn-fantasma { background: transparent; border-color: var(--borde); color: var(--texto); }
.btn-fantasma:not(:disabled):hover { background: var(--panel-alto); }

.btn-peligro { background: transparent; border-color: var(--error); color: var(--error); }
.btn-peligro:not(:disabled):hover { background: rgba(248, 81, 73, .12); }

/* checkbox */
label.check { display: flex; align-items: flex-start; gap: 10px; cursor: pointer; margin-bottom: 18px; }
label.check input { margin-top: 3px; width: 16px; height: 16px; accent-color: var(--acento); }
label.check .t { font-size: 14px; }
label.check .pista { display: block; font-size: 12px; color: var(--tenue); }

/* enlace generado */
.caja-enlace { display: flex; gap: 8px; }
.caja-enlace input {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
}
.caja-enlace button { white-space: nowrap; }

/* estado */
.estado { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--tenue); }
.estado .luz { width: 8px; height: 8px; border-radius: 50%; background: var(--tenue); flex: none; }
.estado.on .luz { background: var(--ok); box-shadow: 0 0 0 3px rgba(63, 185, 80, .2); }
.estado.on { color: var(--ok); }
.estado.err .luz { background: var(--error); }
.estado.err { color: var(--error); }

/* métricas */
.metricas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 1px;
  background: var(--borde);
  border: 1px solid var(--borde);
  border-radius: 10px;
  overflow: hidden;
}
.metrica { background: var(--panel); padding: 12px 14px; }
.metrica .v {
  font-size: 18px; font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
}
.metrica .k { font-size: 11px; color: var(--tenue); text-transform: uppercase; letter-spacing: .04em; margin-top: 2px; }

.nota {
  font-size: 13px;
  padding: 11px 13px;
  border-radius: 8px;
  border: 1px solid var(--borde);
  background: var(--panel-alto);
  color: var(--tenue);
}
.nota.aviso { border-color: rgba(210, 153, 34, .4); background: rgba(210, 153, 34, .1); color: #e3b341; }
.nota.error { border-color: rgba(248, 81, 73, .4); background: rgba(248, 81, 73, .1); color: #ff7b72; }

/* vista previa emisor */
video.previa {
  width: 100%;
  border-radius: 10px;
  background: #000;
  border: 1px solid var(--borde);
  display: block;
  aspect-ratio: 16 / 9;
  object-fit: contain;
}

.oculto { display: none !important; }

/* ---------- visor a pantalla completa ---------- */
body.visor { background: #000; }
.escenario {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
}
.escenario video {
  max-width: 100%; max-height: 100%;
  width: 100%; height: 100%;
  object-fit: contain;
  background: #000;
}
.cargando { text-align: center; color: var(--tenue); padding: 24px; }
.girador {
  width: 26px; height: 26px; margin: 0 auto 14px;
  border: 2px solid var(--borde); border-top-color: var(--acento);
  border-radius: 50%; animation: giro .8s linear infinite;
}
@keyframes giro { to { transform: rotate(360deg); } }

.barra {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px;
  background: linear-gradient(transparent, rgba(0, 0, 0, .85) 45%);
  font-size: 12px; color: #c9d1d9;
  font-variant-numeric: tabular-nums;
  opacity: 0; transition: opacity .25s;
  pointer-events: none;
}
.barra.visible { opacity: 1; pointer-events: auto; }
.barra .sep { margin-left: auto; }
.barra button { padding: 6px 12px; font-size: 12px; }

@media (max-width: 560px) {
  .envoltorio { padding: 20px 14px 48px; }
  .tarjeta { padding: 18px; }
  .barra { gap: 10px; font-size: 11px; }
}