body{
  margin:0;
  background:#eeeeee;
  min-height:100vh;
  font-family:sans-serif;
}

/* 合言葉画面 */
#login{
  min-height:100vh;
  display:flex;
  justify-content:center;
  align-items:center;
}

/* 本体画面 */
#main{
  width:100%;
  min-height:100vh;

  display:none;
  flex-direction:column;
  justify-content:center;
  align-items:center;

  box-sizing:border-box;
  padding:24px 8px;
}

.container{
  width:90%;
  max-width:400px;
  text-align:center;

  opacity:0;
  transform:translateY(10px);
  animation:fadeIn .8s ease forwards;
}

.logo{
  font-weight:500;
  text-align:center;
  padding:30px 0 30px;

  font-family:'Atkinson Hyperlegible Mono', monospace;
  font-size:42px;
  letter-spacing:1px;

  height:42px;
  display:flex;
  align-items:center;
  justify-content:center;
}

.green{
  color:#2e8b57;
}

.sub_title{
  color:#666;
}

.message{
  font-size:16px;
}

.loading_stone{
  display:flex;
  justify-content:center;
  gap:12px;
  margin-top:20px;
}

.loading_stone span{
  width:18px;
  height:18px;
  border-radius:50%;
  background:#222;
  animation:flip 4.5s infinite;
}

.loading_stone span:nth-child(2){
  animation-delay:.2s;
}

.loading_stone span:nth-child(3){
  animation-delay:.4s;
}

footer{
  width:100%;
  text-align:center;
  margin-top:20px;
}

footer a{
  color:#555;
  text-decoration:none;
}

footer a:hover{
  color:#222;
}

footer a:active{
  opacity:.7;
}

.footer_links{
  padding:20px 0;
  display:flex;
  justify-content:center;
  gap:16px;
}

.footer_links p{
  margin:0;
}

.copyright{
  text-align:center;
  font-size:14px;
  color:#666;
  padding-bottom:30px;
  line-height:1.5;
}

.copyright a{
  color:#5797f8;
  text-decoration:none;
  font-size:14px;
}

.version{
  font-size:12px;
  color:#888;
}

@keyframes fadeIn{
  to{
    opacity:1;
    transform:translateY(0);
  }
}

@keyframes flip{
  0%,100%{
    background:#222;
    transform:rotateY(0deg);
  }

  50%{
    background:#fff;
    transform:rotateY(180deg);
    box-shadow:0 0 0 1px #949494 inset;
  }
}