/* =============================================================================================
   Pantalla de acceso: espacio virtual de datos + tarjeta 3D con pasillo de centro de datos
   Tambien contiene el pie de pagina de dos partes y la marca de la aplicacion.
   ============================================================================================= */
body.auth {
  display: grid; grid-template-rows: 1fr auto; place-items: stretch; padding: 0; min-height: 100vh;
  background: #040b1f url("img/bg-portada.svg") center / cover no-repeat fixed;
  color: #eaf2ff; overflow-x: hidden;
}
body.auth::before { /* velo para dar profundidad y asegurar contraste */
  content: ""; position: fixed; inset: 0; pointer-events: none;
  background: radial-gradient(1100px 600px at 50% 46%, rgba(4,11,31,0) 30%, rgba(4,11,31,.55) 100%);
}
.stage { position: relative; display: grid; place-items: center; padding: 40px 20px 72px; }
.stage::after { /* sombra proyectada en el suelo virtual */
  content: ""; position: absolute; left: 50%; bottom: 14px; width: min(900px, 84vw); height: 54px; transform: translateX(-50%);
  background: radial-gradient(closest-side, rgba(0,0,0,.6), rgba(0,0,0,0)); filter: blur(12px); pointer-events: none;
}
.float { width: min(1000px, 100%); }
/* Tarjeta plana, de frente. La profundidad la dan capas apiladas por debajo y sombras largas y suaves. */
.card3d { --gx: 30%; --gy: 0%; position: relative; }
.card3d::before, .card3d::after { content: ""; position: absolute; border-radius: 30px; pointer-events: none; z-index: 0; }
.card3d::before { /* primera capa: asoma por debajo, mas estrecha, con canto iluminado */
  inset: 20px 22px -20px 22px; background: linear-gradient(180deg, #1c449f, #0d2765);
  box-shadow: inset 0 2px 0 rgba(170,215,255,.55), 0 0 0 1px rgba(110,170,255,.35);
}
.card3d::after { /* segunda capa: aun mas estrecha y oscura, con la sombra grande */
  inset: 40px 46px -40px 46px; background: #07173f;
  box-shadow: inset 0 2px 0 rgba(120,170,240,.4), 0 52px 70px -18px rgba(0,0,0,.75), 0 22px 40px -14px rgba(0,0,0,.55), 0 0 80px rgba(60,130,255,.25);
}

.face {
  position: relative; z-index: 1; display: grid; grid-template-columns: 1.05fr 1fr; min-height: 560px; border-radius: 28px; overflow: hidden;
  background: #0a2a66 url("img/bg-centro-datos.svg") left center / cover no-repeat;
  box-shadow: inset 0 0 0 1px rgba(160,205,255,.4), inset 0 2px 0 rgba(255,255,255,.4), inset 0 -3px 0 rgba(0,0,0,.35),
              0 2px 0 rgba(170,210,255,.25);
}
.face-visual {
  position: relative; display: flex; flex-direction: column; justify-content: space-between; gap: 28px; padding: 38px 36px;
  background: linear-gradient(180deg, rgba(5,16,46,.55), rgba(5,16,46,.15) 40%, rgba(5,16,46,.65));
}
.logo-cep { width: min(250px, 70%); height: auto; filter: drop-shadow(0 8px 18px rgba(0,0,0,.45)); }
.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: .72rem; color: #ffd000; margin: 0 0 10px; font-weight: 700; }
.visual-title { font-size: 1.35rem; line-height: 1.3; font-weight: 700; margin: 0 0 18px; text-shadow: 0 2px 14px rgba(0,0,0,.5); }
.points { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; font-size: .9rem; color: #d7e7ff; }
.points li { display: flex; align-items: center; gap: 10px; }
.points .ico { color: #7fd8ff; }

.face-form {
  position: relative; display: flex; flex-direction: column; justify-content: center; gap: 4px; padding: 38px 44px;
  margin: 18px 18px 18px 0; border-radius: 22px; color: #14213d;
  background: rgba(255,255,255,.95); backdrop-filter: blur(14px);
  box-shadow: 0 30px 60px -20px rgba(0,0,0,.55), 0 0 0 1px rgba(255,255,255,.7) inset, -6px 0 40px rgba(20,60,160,.25);
}
.face-form h1 { font-size: 1.5rem; margin: 10px 0 2px; letter-spacing: -.01em; }
.face-form .muted { color: #5b6785; margin: 0 0 8px; }
.logo-sigescep { width: min(250px, 80%); height: auto; margin-bottom: 4px; }
.face-form .field span { color: #14213d; }
.face-form .field input { background: #fff; border-color: #cfd8ea; color: #14213d; }
.legal { font-size: .78rem; color: #6b7794; margin: 14px 0 0; }

.btn-3d { box-shadow: 0 6px 0 #0a2a6e, 0 14px 22px -6px rgba(10,42,110,.55); transform: translateY(0); transition: transform .08s, box-shadow .08s; }
.btn-3d:hover { transform: translateY(-1px); box-shadow: 0 7px 0 #0a2a6e, 0 18px 26px -6px rgba(10,42,110,.6); }
.btn-3d:active { transform: translateY(5px); box-shadow: 0 1px 0 #0a2a6e, 0 6px 10px -4px rgba(10,42,110,.5); }

.glare { position: absolute; inset: 0; pointer-events: none; border-radius: 28px; mix-blend-mode: soft-light;
  background: radial-gradient(circle at var(--gx) var(--gy), rgba(255,255,255,.55), rgba(255,255,255,0) 46%); }

/* ---- Pie de pagina: organizacion a la izquierda, creador y propietario del sitio a la derecha ---- */
.pie { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding: 14px 24px;
  font-size: .82rem; color: var(--muted); border-top: 1px solid var(--border); }
.pie-autor { font-weight: 700; letter-spacing: .04em; margin-left: auto; }
.pie-auth { position: relative; border-top: 1px solid rgba(160,205,255,.18); color: #b9cdf0; background: rgba(4,11,31,.55);
  backdrop-filter: blur(6px); padding: 14px max(24px, 4vw); }
.main { min-height: 100vh; }
.main > .content { flex: 1; }

/* ---- Marca en la aplicacion ---- */
.brand { display: block; padding: 6px 8px 18px; }
.brand-logo { display: block; width: 170px; height: auto; filter: brightness(0) invert(1); }
.cep-foot { display: block; width: 130px; height: auto; margin: 0 auto 12px; opacity: .92; }

/* ---- Movil / tableta ---- */
@media (max-width: 900px) {
  .stage { padding: 18px 12px 30px; }
  .card3d::before { inset: 8px 12px -8px 12px; border-radius: 24px; }
  .card3d::after  { inset: 16px 24px -16px 24px; border-radius: 24px; }
  .face { grid-template-columns: 1fr; min-height: 0; border-radius: 22px; background-image: none; }
  .face-visual { padding: 22px 22px 18px; gap: 14px; min-height: 230px;
    background: linear-gradient(180deg, rgba(5,16,46,.30), rgba(5,16,46,.55)), url("img/bg-centro-datos.svg") center 44% / cover no-repeat; }
  .face-visual .visual-copy .points, .face-visual .visual-title { display: none; }
  .logo-cep { width: 150px; }
  .face-form { margin: 0 12px 12px; padding: 26px 22px; }
  .glare { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .btn-3d { transition: none; }
}