/* エントランスアニメーション */
.entrance-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #111;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.door-container {
  position: relative;
  width: 100%;
  height: 100%;
  perspective: 1000px;
}

.door {
  position: absolute;
  top: 0;
  height: 100%;
  width: 50%;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  transition: transform 1s cubic-bezier(0.8, 0, 0.2, 1);
  box-shadow: 0 0 50px rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.door-left {
  left: 0;
  transform-origin: left;
  border-right: 2px solid rgba(255, 255, 255, 0.1);
}

.door-right {
  right: 0;
  transform-origin: right;
  border-left: 2px solid rgba(255, 255, 255, 0.1);
}

/* パターン背景をCSSで作成 (画像の代わり) */
.door::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(201, 179, 114, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 179, 114, 0.03) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.3;
}

.door::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(201, 179, 114, 0.05) 0%, rgba(201, 179, 114, 0) 60%);
  mix-blend-mode: overlay;
}

.door-handle {
  position: absolute;
  top: 50%;
  height: 80px;
  width: 20px;
  background: linear-gradient(to right, #c9b372, #e6d399, #c9b372);
  border-radius: 5px;
  box-shadow: 0 0 15px rgba(201, 179, 114, 0.7);
}

.door-left .door-handle {
  right: 30px;
  transform: translateY(-50%);
}

.door-right .door-handle {
  left: 30px;
  transform: translateY(-50%);
}

.door-logo {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 150px;
  height: 150px;
  background: rgba(0, 0, 0, 0.8);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: 0 0 50px rgba(201, 179, 114, 0.5);
  z-index: 10;
  border: 2px solid #c9b372;
  opacity: 0;
  transition: opacity 0.3s ease-in-out;
}

.door-logo img {
  width: 80%;
  height: 80%;
  object-fit: contain;
}

.door-open .door-left {
  transform: rotateY(-110deg);
}

.door-open .door-right {
  transform: rotateY(110deg);
}

.door-open .door-logo {
  opacity: 1;
  animation: logoReveal 1s ease-in-out forwards;
}

@keyframes logoReveal {
  0% {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.5);
  }
  50% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
  }
  100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
    box-shadow: 0 0 80px rgba(201, 179, 114, 0.8);
  }
}

.door-welcome {
  position: absolute;
  bottom: 15%;
  left: 0;
  width: 100%;
  text-align: center;
  color: #c9b372;
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 5px;
  text-shadow: 0 0 10px rgba(201, 179, 114, 0.5);
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.5s ease 0.5s;
}

.door-open .door-welcome {
  opacity: 1;
  transform: translateY(0);
}

.entrance-overlay.fade-out {
  animation: fadeOut 0.6s ease-in-out forwards 1.2s;
}

@keyframes fadeOut {
  from {
    opacity: 1;
  }
  to {
    opacity: 0;
    visibility: hidden;
  }
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
  .door-logo {
    width: 120px;
    height: 120px;
  }
  
  .door-welcome {
    font-size: 1.5rem;
    letter-spacing: 3px;
  }
  
  .door-handle {
    height: 60px;
    width: 15px;
  }
}

@media (max-width: 480px) {
  .door-logo {
    width: 100px;
    height: 100px;
  }
  
  .door-welcome {
    font-size: 1.2rem;
    letter-spacing: 2px;
  }
  
  .door-handle {
    height: 50px;
    width: 10px;
  }
}