/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

/* Fondo negro */
body {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000;
  color: white;
  overflow: hidden;
  padding: 20px;
  position: relative;
}

/* Nebulosa suave */
body::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 50% 30%, rgba(255,255,255,0.15), transparent 55%),
    radial-gradient(circle at 40% 55%, rgba(0,140,255,0.20), transparent 60%),
    radial-gradient(circle at 60% 65%, rgba(255,0,80,0.18), transparent 65%),
    radial-gradient(circle at 50% 80%, rgba(140,0,255,0.10), transparent 70%);
  filter: blur(60px);
  opacity: 0.8;
  z-index: 0;
}

/* Estrellas */
body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(1px 1px at 5% 10%, white, transparent),
    radial-gradient(1px 1px at 15% 30%, white, transparent),
    radial-gradient(1px 1px at 25% 70%, white, transparent),
    radial-gradient(1px 1px at 35% 50%, white, transparent),
    radial-gradient(1px 1px at 45% 20%, white, transparent),
    radial-gradient(1px 1px at 55% 80%, white, transparent),
    radial-gradient(1px 1px at 65% 60%, white, transparent),
    radial-gradient(1px 1px at 75% 35%, white, transparent),
    radial-gradient(1px 1px at 85% 75%, white, transparent),
    radial-gradient(1px 1px at 95% 15%, white, transparent),
    radial-gradient(2px 2px at 25% 15%, rgba(255,255,255,0.9), transparent),
    radial-gradient(2px 2px at 65% 25%, rgba(255,255,255,0.8), transparent),
    radial-gradient(2px 2px at 80% 80%, rgba(255,255,255,0.8), transparent);
  opacity: 0.85;
  z-index: 1;
}

/* Contenedor */
.container {
  width: 100%;
  max-width: 420px;
  text-align: center;
  padding: 35px 15px;
  position: relative;
  z-index: 5;
}

/* Logo */
.logo {
  width: 230px;
  margin: 0 auto 15px;
  display: block;
}

/* Texto */
.subtitle {
  font-size: 18px;
  font-weight: 600;
  opacity: 0.95;
  margin-bottom: 8px;
}

.desc {
  font-size: 14px;
  font-weight: 300;
  opacity: 0.85;
  margin-bottom: 30px;
}

/* Botón estilo cápsula blanco */
.btn-white {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;

  background: rgba(255, 255, 255, 0.95);
  border-radius: 50px;
  padding: 18px 20px;
  margin: 18px 0;

  text-decoration: none;
  box-shadow: 0px 10px 25px rgba(0, 0, 0, 0.55);

  transition: 0.25s ease;
}

/* Hover */
.btn-white:hover {
  transform: scale(1.03);
  background: rgba(255, 255, 255, 1);
}

/* Icono alineado a la izquierda */
.btn-white .icon {
  position: absolute;
  left: 25px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-white .icon img {
  width: 34px;
  height: 34px;
}

/* Texto centrado */
.btn-white .text {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 1px;
  color: #0f172a;
}

/* Footer */
.footer {
  margin-top: 50px;
  font-size: 14px;
  opacity: 0.9;
  font-style: italic;
}

/* Responsive */
@media (max-width: 480px) {
  .logo {
    width: 200px;
  }

  .btn-white {
    padding: 16px 18px;
  }

  .btn-white .text {
    font-size: 16px;
  }

  .btn-white .icon img {
    width: 30px;
    height: 30px;
  }
}