:root {
  --fondo: #0f1115;
  --panel: #171a21;
  --borde: #2a2f3a;
  --texto: #e6e8eb;
  --suave: #9aa3b2;
  --acento: #4f8cff;
  --ok: #3ecf8e;
  --error: #ff5a5f;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--fondo);
  color: var(--texto);
  font: 15px/1.5 -apple-system, Segoe UI, Roboto, sans-serif;
}
.envoltorio { max-width: 760px; margin: 0 auto; padding: 2rem 1.2rem 4rem; }
.envoltorio.ancho { max-width: 1200px; }
header.top { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1rem; }
header.top h1 { font-size: 1.3rem; margin: 0; }
header.top span { color: var(--suave); font-size: .85rem; }

.tarjeta {
  background: var(--panel);
  border: 1px solid var(--borde);
  border-radius: 10px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.2rem;
  max-width: 760px;
}
.tarjeta h2 { font-size: 1rem; margin: 0 0 .9rem; }
.fila { display: flex; align-items: center; gap: .6rem; margin-bottom: .7rem; flex-wrap: wrap; }
.fila label { min-width: 170px; color: var(--suave); font-size: .88rem; }
input[type=text], input[type=password], select, textarea {
  background: #0c0e12;
  border: 1px solid var(--borde);
  color: var(--texto);
  border-radius: 6px;
  padding: .5rem .6rem;
  font-size: .9rem;
  flex: 1;
  min-width: 180px;
}
button {
  background: var(--acento);
  color: white;
  border: none;
  border-radius: 6px;
  padding: .5rem .9rem;
  font-size: .85rem;
  cursor: pointer;
}
button.secundario { background: #2a2f3a; }
button.peligro { background: var(--error); }
button:disabled { opacity: .5; cursor: default; }
.msg { font-size: .82rem; margin-top: .3rem; }
.msg.ok { color: var(--ok); }
.msg.error { color: var(--error); }
.mono { font-family: ui-monospace, monospace; font-size: .82rem; word-break: break-all; background: #0c0e12; border: 1px solid var(--borde); border-radius: 6px; padding: .5rem .7rem; }
.login-caja { max-width: 340px; margin: 4rem auto; }
.login-caja h1 { text-align: center; font-size: 1.2rem; }
small.ayuda { color: var(--suave); display: block; margin-top: .2rem; font-size: .78rem; }
.vacio { padding: .9rem; color: var(--suave); font-size: .85rem; }

/* --- pestañas -------------------------------------------------------- */
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: 1.2rem; border-bottom: 1px solid var(--borde); }
.tab-btn {
  background: transparent; color: var(--suave); border: none; border-bottom: 2px solid transparent;
  border-radius: 0; padding: .6rem .9rem; font-size: .92rem; cursor: pointer;
}
.tab-btn.activo { color: var(--texto); border-bottom-color: var(--acento); font-weight: 600; }

/* --- tarjetas de inicio ------------------------------------------------ */
.tarjetas-inicio { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.tarjeta-inicio {
  background: var(--panel); border: 1px solid var(--borde); border-radius: 10px;
  padding: 1.4rem; display: flex; flex-direction: column; gap: .6rem;
}
.tarjeta-inicio .icono { font-size: 2rem; }
.tarjeta-inicio h3 { margin: 0; font-size: 1.05rem; }
.tarjeta-inicio .sin-url { color: var(--suave); font-size: .82rem; }
.tarjeta-inicio .acciones { display: flex; gap: .5rem; margin-top: auto; flex-wrap: wrap; }
.tarjeta-inicio .acciones a { color: var(--acento); font-size: .82rem; text-decoration: none; align-self: center; }

/* --- iframe de cada panel embebido ------------------------------------ */
.panel-iframe {
  width: 100%; height: calc(100vh - 190px); min-height: 480px;
  border: 1px solid var(--borde); border-radius: 10px; background: #0c0e12;
}