body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background-image: url("./assets/heart-bg.jpg");
  font-family: "Pixelify Sans", sans-serif;
}

/* Envelope Screen */
#envelope-container {
  text-align: center;
  cursor: pointer;
}

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

#envelope {
  width: 200px;
  animation: pulse 1.5s infinite;
  cursor: pointer;
}

#letter-container {
  display: none;
  position: fixed;
  inset: 0;
  justify-content: center;
  align-items: center;
}

.letter-window {
  width: 90vw;
  max-width: 800px;
  aspect-ratio: 3/2;
  padding: 20px 20px 0 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  background-image: url("./assets/window.png");
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
  border-radius: 12px;
  gap: 1px;
  padding-top: 180px;

  transform: scale(1.2);
  opacity: 0;
  transition:
    transform 0.6s ease,
    opacity 0.6s ease;
}

.letter-window.open {
  transform: scale(1);
  opacity: 1;
}

h1 {
  font-size: 30px;
  margin: 0;
}

p {
  font-size: 40px;
}

/* Cat */
.cat {
  width: 250px;
  margin: 10px 0;
  transition: width 0.4s ease;
}

.letter-window.final .cat {
  width: 180px;
}

/* Buttons */
.buttons {
  display: flex;
  justify-content: center;
  gap: 30px;
  position: relative;
}

.no-wrapper {
  position: relative;
}
.btn {
  width: 120px;
  cursor: pointer;
  user-select: none;
}

.yes-btn .no-btn {
  width: 120px;
  height: aouto;
  display: inline-block;
}

.yes-btn {
  position: relative;
  z-index: 2;
  transform-origin: center center;
  transition: transform 0.3s ease;
}

.no-btn {
  z-index: 1;
  position: relative;
  transition: transform 0.15s ease;
  cursor: default;
}

.final-text {
  font-size: 22px;
  line-height: 1.4;
  text-align: center;
  display: inline-block;
  padding: 10px 20px;
  background-color: rgba(255, 240, 240, 0.5);
  border-radius: 12px;
}