body {
  margin: 0;
  padding: 0;
  font-family: 'Quicksand', sans-serif;
  background-image: url('fondoo.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  min-height: 100vh;
  overflow-x: hidden;
  overflow-y: auto;
  position: relative;
  cursor: pointer;
}

.overlay {
  position: fixed;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 204, 230, 0.3);
  z-index: -1;
}

.container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  text-align: center;
  padding: 20px;
  box-sizing: border-box;
  flex-direction: column;
}

.carta-inicial {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  margin-bottom: 30px;
}

.texto-arriba {
  font-size: 1.5rem;
  font-weight: bold;
  color: #d63384;
  font-family: 'Quicksand', sans-serif;
  animation: latido 2s infinite;
  text-shadow: 1px 1px 2px #fff;
}

.carta-cerrada-img {
  width: 320px;
  height: 320px;
  background-image: url('images/cartadibujo.png');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  border-radius: 20px;
  box-shadow: 0 0 30px rgba(255, 192, 203, 0.5);
  background-color: transparent;
}

.carta {
  background-color: #fff;
  padding: 40px;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(255, 0, 85, 0.3);
  max-width: 600px;
  animation: aparecer 1.5s ease-out forwards;
}

.hidden {
  display: none;
}

.contenido-carta {
  line-height: 1.8;
  color: #5a5a5a;
  font-size: 1.2rem;
  text-align: left;
  max-width: 500px;
}

.contenido-carta h1 {
  color: #ff4d94;
  text-align: center;
  margin-bottom: 20px;
}

.corazon-final {
  display: inline-block;
  margin-top: 20px;
  animation: latido 2s infinite;
}

@keyframes latido {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.corazon-flotante {
  position: fixed;
  top: -50px;
  z-index: 100;
  animation: flotar linear forwards;
  user-select: none;
  opacity: 0.8;
}

@keyframes flotar {
  to {
    transform: translateY(100vh) rotate(360deg);
    opacity: 0;
  }
}

@keyframes aparecer {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}