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

html{
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility
}

body{
  font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  background:#000;
  color:#fff;
  min-height:100vh;
  min-height:100dvh;
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale
}

#app{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:2rem 1.5rem;
  animation:fadeIn 0.8s ease
}

@keyframes fadeIn{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}

.container{
  width:100%;
  max-width:340px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:4rem
}

.brand{
  text-align:center;
  display:flex;
  flex-direction:column;
  gap:1rem
}

.logo{
  width:48px;
  height:48px;
  margin:0 auto 0.5rem;
  display:block
}

.title{
  font-size:clamp(1.625rem,5vw,2rem);
  font-weight:300;
  letter-spacing:0.05em;
  line-height:1.1;
  color:#fff
}

.tagline{
  font-size:clamp(0.875rem,2.5vw,0.9375rem);
  font-weight:300;
  color:rgba(255,255,255,0.4);
  line-height:1.6;
  letter-spacing:0.01em
}

.views-area{
  width:100%;
  display:grid
}

.views-area .view{
  grid-row:1/-1;
  grid-column:1/-1
}

.view{
  width:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:0.75rem;
  opacity:0;
  transform:translateY(4px);
  pointer-events:none;
  transition:opacity 0.4s cubic-bezier(0.4,0,0.2,1),transform 0.4s cubic-bezier(0.4,0,0.2,1);
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden
}

.view.active{
  opacity:1;
  transform:translateY(0);
  pointer-events:auto
}

.btn{
  width:100%;
  height:48px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:inherit;
  font-size:0.875rem;
  font-weight:400;
  color:rgba(255,255,255,0.7);
  background:transparent;
  border:1px solid rgba(255,255,255,0.1);
  border-radius:10px;
  cursor:pointer;
  transition:border-color 0.3s ease,color 0.3s ease;
  letter-spacing:0.01em;
  -webkit-tap-highlight-color:transparent;
  user-select:none;
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  transform:translateZ(0);
  -webkit-transform:translateZ(0)
}

.btn:hover{
  border-color:rgba(255,255,255,0.25);
  color:rgba(255,255,255,0.9)
}

.btn:active{
  border-color:rgba(255,255,255,0.25);
  color:rgba(255,255,255,0.9)
}

.input-row{
  width:100%;
  height:48px;
  display:flex;
  align-items:center;
  border:1px solid rgba(255,255,255,0.1);
  border-radius:10px;
  transition:border-color 0.3s ease;
  overflow:hidden;
  backface-visibility:hidden;
  -webkit-backface-visibility:hidden;
  transform:translateZ(0);
  -webkit-transform:translateZ(0)
}

.input-row:focus-within{
  border-color:rgba(255,255,255,0.3)
}

.input-row input{
  flex:1;
  height:100%;
  padding:0 1rem;
  font-family:inherit;
  font-size:0.875rem;
  font-weight:400;
  color:#fff;
  background:transparent;
  border:none;
  outline:none;
  letter-spacing:0.01em;
  min-width:0
}

.input-row input::placeholder{
  color:rgba(255,255,255,0.25)
}

.btn-submit{
  display:flex;
  align-items:center;
  justify-content:center;
  width:48px;
  min-width:48px;
  height:48px;
  background:transparent;
  border:none;
  color:rgba(255,255,255,0.3);
  cursor:pointer;
  transition:color 0.3s ease;
  -webkit-tap-highlight-color:transparent;
  position:relative
}

.btn-submit:hover{
  color:rgba(255,255,255,0.7)
}

.btn-submit .spinner-icon{
  display:none;
  position:absolute
}

.btn-submit .submit-icon{
  display:block
}

.btn-submit.loading{
  pointer-events:none
}

.btn-submit.loading .submit-icon{
  display:none
}

.btn-submit.loading .spinner-icon{
  display:block;
  animation:spin 0.7s linear infinite
}

@keyframes spin{
  to{transform:rotate(360deg)}
}

.btn-back{
  font-family:inherit;
  font-size:0.75rem;
  font-weight:400;
  color:rgba(255,255,255,0.2);
  background:none;
  border:none;
  cursor:pointer;
  padding:0.5rem;
  transition:color 0.3s ease;
  -webkit-tap-highlight-color:transparent;
  letter-spacing:0.02em
}

.btn-back:hover{
  color:rgba(255,255,255,0.4)
}

.msg{
  font-size:0.75rem;
  text-align:center;
  min-height:1.125rem;
  line-height:1.4;
  transition:opacity 0.3s ease
}

.msg-error{
  color:rgba(255,100,100,0.7);
  opacity:0
}

.msg-error.visible{
  opacity:1
}

.msg-success{
  font-size:0.9375rem;
  font-weight:300;
  color:rgba(255,255,255,0.5);
  letter-spacing:0.01em;
  text-align:center
}

@media(max-width:420px){
  .container{
    gap:3rem
  }
}

@media(max-height:500px){
  .container{
    gap:2rem
  }
  .brand{
    gap:0.5rem
  }
}

@media(prefers-reduced-motion:reduce){
  .view,.btn,.input-row,.btn-submit,.btn-back,.msg-error,#app{
    transition:none;
    animation:none
  }
}