body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  color: white;
  text-align: center;
  overflow: hidden;
}

.scene-container {
  width: 100vw;
  height: 100vh;
  position: relative;
}

.bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
}


.title-box {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  z-index: 10;
  
}

.logo-img {
  width: 200px;
  height: auto;
  margin-bottom: 200px;
}


/* 按鈕樣式 */
.enter-button {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 200px;
  height: 100px;
  background-color: #ffcc80;
  color: #5d4037;
  border: none;
  border-radius: 16px;
  font-size: 1.5rem;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(0,0,0,0.3);
  transition: all 0.2s ease;
}

.enter-button:hover {
  transform: translate(-50%, -50%) scale(1.05);
  background-color: #ffa726;
}

.transition-cover {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: white;
  z-index: 999;
  opacity: 0;
  animation: flashOut 1s ease forwards;
}

@keyframes flashOut {
  0% { opacity: 0; }
  50% { opacity: 0.3; }
  100% { opacity: 1; }
}