* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  height: 100vh;
  background: #000;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.background {
  position: fixed;
  inset: 0;
  background-image: 
    linear-gradient(
      rgba(0, 0, 0, 0.75),
      rgba(0, 0, 0, 0.85)
    ),
    url("fondo.png");
  background-size: cover;
  background-position: center top;
  background-repeat: no-repeat;
  z-index: -1;
}

.card {
  width: 100%;
  max-width: 460px;
  padding: 32px 28px;
  text-align: center;

  /* Fondo translúcido */
  background: rgba(10, 10, 10, 0);

  /* Efecto vidrio */
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(8px);

  border-radius: 18px;

  box-shadow:
    0 0 40px rgba(255, 215, 0, 0.18),
    inset 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.logo img {
  width: 70px;
  max-width: 100%;
  margin-bottom: 12px;
  filter: drop-shadow(0 0 12px rgba(255, 215, 0, 0.45));
}

.logo {
  margin-bottom: 16px;
  color: #d4af37;
}

.logo i {
  font-size: 38px;
  display: block;
}

.logo span {
  font-weight: bold;
  letter-spacing: 2px;
}

h1 {
  color: #ffd400;
  font-size: 26px;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 15px;
  opacity: 0.85;
  margin-bottom: 14px;
}

.bonus {
  color: #ffd400;
  font-size: 17px;
  margin-bottom: 12px;
}

.cta-text {
  font-size: 13px;
  opacity: 0.7;
  margin-bottom: 16px;
}

.pulse-text {
  animation: pulse 1.6s infinite;
  color: #ffd400;
  font-weight: 600;
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }
  50% {
    transform: scale(1.08);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0.8;
  }
}

.btn-whatsapp {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;

  background: #25D366; /* Verde WhatsApp */
  color: #ffffff;

  padding: 14px;
  border-radius: 14px;

  font-weight: bold;
  font-size: 18px;
  text-decoration: none;

  box-shadow:
    0 6px 20px rgba(37, 211, 102, 0.45);

  transition: all 0.25s ease;
}

.btn-whatsapp i {
  font-size: 22px;
}

.btn-whatsapp:hover {
  background: #1ebe5d;
  transform: translateY(-2px) scale(1.03);
  box-shadow:
    0 10px 28px rgba(37, 211, 102, 0.65);
}

.btn-whatsapp:active {
  transform: scale(0.98);
}

.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 22px;
}

.feature {
  background: #1a1a1a;
  border-radius: 10px;
  padding: 10px;
  font-size: 13px;
  opacity: 0.9;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

@media (max-width: 768px) {
  .background {
    background-position: center;
  }
}