* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100%;
  font-family: 'Poppins', sans-serif;
}

.scene {
  height: 100vh;
  background: url("background.jpg") center / cover no-repeat;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

.letter-container {
  position: relative;
  max-width: 720px;
  padding: 30px;
  text-align: center;
  color: #f3f3f3;
}

#letter {
  font-family: 'Playfair Display', serif;
  font-size: 1.4rem;
  line-height: 1.8;
  white-space: pre-line;
  margin-bottom: 40px;
  opacity: 0;
  animation: fadeIn 2s ease forwards;
}

#surpriseBtn {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.7);
  color: #fff;
  padding: 12px 36px;
  border-radius: 30px;
  font-size: 0.95rem;
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.3s ease;
}

#surpriseBtn:hover {
  background: rgba(255,255,255,0.15);
  transform: translateY(-2px);
}

#surpriseText {
  margin-top: 35px;
  font-family: 'Playfair Display', serif;
  font-size: 2rem;
  opacity: 0;
  transition: opacity 2s ease;
}

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