/* Reset básico */
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
  font-family: 'Segoe UI', sans-serif;
  background-color: #fff;
  overflow-x: hidden;
}

/* Estilo de la intro */
.intro {
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeOut 2s ease 3.5s forwards;
}

.letters {
  display: flex;
  gap: 30px;
}

.letter {
  font-size: 12vw;
  color: #fff;
  opacity: 0;
  transform: scale(0.8) translateY(30px);
  animation: appear 0.8s ease forwards;
}

.letter:nth-child(1) { animation-delay: 0.3s; }
.letter:nth-child(2) { animation-delay: 0.9s; }
.letter:nth-child(3) { animation-delay: 1.5s; }

@keyframes appear {
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes fadeOut {
  to {
    opacity: 0;
    visibility: hidden;
  }
}

/* WhatsApp Button */
.whatsapp-btn {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #25D366;
  color: white;
  padding: 14px 16px;
  border-radius: 50%;
  font-size: 24px;
  z-index: 2000;
  box-shadow: 0 4px 8px rgba(0,0,0,0.3);
  transition: transform 0.2s ease;
  text-decoration: none;
}

.whatsapp-btn:hover {
  transform: scale(1.1);
}

/* Contenido principal */
.main-content {
  opacity: 0;
  padding: 4rem 2rem;
  text-align: center;
  animation: showContent 1s ease 4s forwards;
}

@keyframes showContent {
  to {
    opacity: 1;
  }
}