@charset "utf-8";
/* フェード */
.container {
  position: absolute;
  width: 100%;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #fff;
}

.logo {
  position: absolute;
  z-index: 3;
  opacity: 1;
  animation: fadeOutLogo 0.7s ease 3.0s forwards;
}

.logo img {
  max-width: 100%;
  height: auto;
}

.gradient-bg {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(45deg, #000 0%, #000 100%);
  transform: translateY(100%);
  z-index: 1;
  animation: rollUp 1.1s ease 3.0s forwards;
}

.content {
  position: relative;
  z-index: 4;
  opacity: 0;
  padding: 0 20px;
  animation: fadeInContent 1s ease 3s forwards;
  text-align: center;
}

@keyframes fadeOutLogo {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-20px);
  }
}

@keyframes rollUp {
  0% {
    transform: translateY(100%);
  }
  100% {
    transform: translateY(0%);
  }
}

@keyframes fadeInImage {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 0.4;
  }
}

@keyframes fadeInContent {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scrollLine {
  0% {
    height: 0;
    opacity: 0;
  }
  50% {
    height: 80px;
    opacity: 1;
  }
  100% {
    height: 0;
    opacity: 0;
  }
}

@media (max-width: 768px) {
  .main-title {
    font-size: 2.5rem;
  }
  .sub-title {
    font-size: 1.4rem;
  }
}