:root{
  --bg-1: #0d1726;
  --bg-2: #111f31;
  --bg-3: #16263b;

  --panel: rgba(18, 28, 43, 0.94);
  --panel-line: rgba(255,255,255,0.08);

  --text: #f2f7fb;
  --text-soft: #cfd8e3;
  --text-muted: #97a7ba;
  --text-faint: #71839a;

  --border: rgba(255,255,255,0.10);
  --border-strong: rgba(255,255,255,0.16);

  --accent: #3b82f6;
  --accent-hover: #4f8ff7;
  --accent-press: #2e73e0;
  --accent-soft: rgba(59,130,246,0.14);

  --danger: #f1a4a4;

  --shadow-lg: 0 26px 70px rgba(0,0,0,0.34);

  --radius-xl: 24px;
  --radius-md: 14px;
}

*{
  box-sizing: border-box;
}

html,
body{
  min-height: 100%;
}

body{
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 52%, var(--bg-3) 100%);
}

.page-shell{
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding:
    max(24px, env(safe-area-inset-top))
    max(24px, env(safe-area-inset-right))
    max(24px, env(safe-area-inset-bottom))
    max(24px, env(safe-area-inset-left));
  overflow: hidden;
}

.page-grid{
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255,255,255,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 90%);
  -webkit-mask-image: radial-gradient(circle at center, black 35%, transparent 90%);
}

.auth-container{
  position: relative;
  z-index: 1;
  width: min(460px, 100%);
  padding: 30px 30px 24px;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  background:
    linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.015)),
    var(--panel);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.auth-container.is-hidden{
  display: none !important;
}

.top-mark{
  width: 100%;
  height: 4px;
  margin: -30px 0 24px;
  border-radius: 999px 999px 0 0;
  background: linear-gradient(90deg, #5ca0ff, #3b82f6 55%, #2a68cf);
}

.header{
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
}

.logo{
  width: 68px;
  height: auto;
  display: block;
  flex: 0 0 auto;
}

.app-title{
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  min-width: 0;
}

.title{
  color: var(--text);
  font-size: 24px;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -0.03em;
}

.eyebrow{
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.subline{
  margin: 0;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.65;
}

#submitAccessCode{
  margin-top: 6px;
}

.input-row{
  display: flex;
  align-items: stretch;
}

input.input{
  flex: 1 1 auto;
  min-width: 0;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-right: 0;
  background: rgba(10, 18, 30, 0.92);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition:
    border-color .2s ease,
    box-shadow .2s ease,
    background .2s ease,
    opacity .2s ease;
}

input.input::placeholder{
  color: var(--text-faint);
}

input.input:hover{
  border-color: var(--border-strong);
}

input.input:focus{
  border-color: rgba(59,130,246,0.58);
  background: rgba(10, 18, 30, 1);
  box-shadow: inset 0 0 0 1px rgba(59,130,246,0.18);
}

input.input:read-only{
  opacity: 0.8;
}

.btn-primary,
button{
  border: 0;
  background: linear-gradient(180deg, var(--accent), #3277e8);
  color: #ffffff;
  cursor: pointer;
  transition:
    background .2s ease,
    box-shadow .2s ease,
    transform .16s ease,
    opacity .2s ease;
}

.icon-btn{
  position: relative;
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0 14px 14px 0;
  box-shadow: 0 10px 24px rgba(59,130,246,0.22);
}

.btn-icon svg{
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.btn-icon,
.btn-spinner{
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: opacity .18s ease;
}

.btn-icon{
  opacity: 1;
}

.btn-spinner{
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.28);
  border-top-color: #ffffff;
  border-radius: 50%;
  opacity: 0;
  animation: spin .8s linear infinite;
}

#submitAccessCode.is-loading .btn-icon{
  opacity: 0;
}

#submitAccessCode.is-loading .btn-spinner{
  opacity: 1;
}

#submitAccessCode .btn-primary:hover{
  background: linear-gradient(180deg, var(--accent-hover), #4285f5);
  box-shadow: 0 14px 28px rgba(59,130,246,0.26);
}

#submitAccessCode .btn-primary:active{
  background: linear-gradient(180deg, var(--accent-press), #2a68cf);
  transform: translateY(1px);
  box-shadow: 0 8px 18px rgba(59,130,246,0.22);
}

button:disabled{
  opacity: 0.8;
  cursor: not-allowed;
}

.status-message{
  min-height: 24px;
  margin-top: 6px;
  color: var(--danger);
  text-align: center;
}

.security-note{
  margin-top: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 12px;
  background: rgba(255,255,255,0.03);
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
}

.footer{
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--panel-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: var(--text-faint);
  font-size: 12px;
  text-align: center;
}

.footer img{
  width: 128px;
  max-width: 40%;
  height: auto;
  border-radius: 6px;
  opacity: 0.72;
}

@keyframes spin{
  from{
    transform: rotate(0deg);
  }
  to{
    transform: rotate(360deg);
  }
}

@media (max-width: 640px){
  body{
    background: var(--bg-2);
  }

  .page-shell{
    padding: 0;
    place-items: stretch;
  }

  .page-grid{
    opacity: 0.12;
  }

  .auth-container{
    width: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    border-radius: 0;
    border: 0;
    box-shadow: none;
    padding:
      calc(env(safe-area-inset-top) + 24px)
      18px
      calc(env(safe-area-inset-bottom) + 20px)
      18px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }

  .top-mark{
    margin:
      calc(-1 * (env(safe-area-inset-top) + 24px))
      -18px
      20px;
    border-radius: 0;
  }

  .header{
    gap: 12px;
    margin-bottom: 18px;
  }

  .logo{
    width: 68px;
  }

  .title{
    font-size: 21px;
  }

  .eyebrow{
    font-size: 10px;
  }

  #submitAccessCode{
    margin-top: 4px;
  }

  input.input{
    height: 44px;
    padding: 0 12px;
    font-size: 14px;
    border-radius: 12px 0 0 12px;
  }

  .icon-btn{
    flex-basis: 44px;
    width: 44px;
    height: 44px;
    border-radius: 0 12px 12px 0;
  }

  .btn-icon svg{
    width: 17px;
    height: 17px;
  }

  .btn-spinner{
    width: 15px;
    height: 15px;
  }

  .status-message{
    margin-top: 10px;
  }

  .security-note{
    margin-top: 10px;
    font-size: 11px;
    padding: 11px 12px;
  }

  .footer{
    margin-top: auto;
    padding-top: 20px;
    gap: 8px;
    font-size: 11px;
  }

  .footer img{
    width: 84px;
  }
}

@media (max-width: 380px){
  .auth-container{
    padding:
      calc(env(safe-area-inset-top) + 24px)
      16px
      calc(env(safe-area-inset-bottom) + 18px)
      16px;
  }

  .top-mark{
    margin:
      calc(-1 * (env(safe-area-inset-top) + 24px))
      -16px
      18px;
  }

  .header{
    gap: 10px;
  }

  .logo{
    width: 60px;
  }

  .title{
    font-size: 19px;
  }

  .eyebrow{
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce){
  *,
  *::before,
  *::after{
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .btn-spinner{
    animation: spin 1s linear infinite !important;
  }
}