:root{
  --auth-card: rgba(40, 58, 90, 0.38);
  --auth-line: rgba(255,255,255,0.12);
  --auth-glow: rgba(0,188,212,0.3);
}

body.auth-page{
  background:
    radial-gradient(900px 520px at 18% 18%, rgba(0,188,212,0.08), transparent 60%),
    radial-gradient(800px 520px at 82% 80%, rgba(0,123,255,0.10), transparent 55%),
    var(--bg-dark);
}

.muted{
  color: var(--text-dark);
}

.eyebrow{
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.75rem;
  color: var(--primary-color);
  font-weight: 700;
  margin-bottom: 8px;
}

.auth-main{
  min-height: calc(100vh - 140px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:40px 2.5% 60px;
}

.auth-shell{
  width:min(1100px, 92vw);
  display:grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap:28px;
  align-items:stretch;
}

.auth-side{
  background: linear-gradient(160deg, rgba(23,26,33,0.9), rgba(17,23,34,0.85));
  border:1px solid var(--auth-line);
  border-radius:18px;
  padding:32px;
  box-shadow: 0 20px 55px rgba(0,0,0,0.35);
  position:relative;
  overflow:hidden;
}

.auth-side::after{
  content:"";
  position:absolute;
  inset:-40% auto auto -40%;
  width:260px;
  height:260px;
  background: radial-gradient(circle, rgba(0,188,212,0.25), transparent 70%);
  filter: blur(8px);
}

.auth-side h1,
.auth-side h2{
  font-size: clamp(28px, 3vw, 38px);
  margin-bottom:14px;
}

.auth-side p{
  color: var(--text-dark);
  margin-bottom:18px;
}

.auth-features{
  display:grid;
  gap:12px;
}

.auth-feature{
  background: rgba(255,255,255,0.04);
  border:1px solid rgba(255,255,255,0.08);
  border-radius:12px;
  padding:12px 14px;
  display:flex;
  gap:10px;
  align-items:flex-start;
}

.auth-feature span{
  color: var(--primary-color);
  font-weight:700;
}

.auth-card{
  background: var(--auth-card);
  border:1px solid var(--auth-line);
  border-radius:18px;
  padding:30px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.35);
  backdrop-filter: blur(10px);
}

.auth-card h2{
  margin-bottom:6px;
}

.auth-card p{
  color: var(--text-dark);
  margin-bottom:20px;
}

.auth-form{
  display:grid;
  gap:14px;
}

.auth-alert{
  display:none;
  padding:10px 12px;
  border-radius:10px;
  font-size:0.9rem;
  border:1px solid transparent;
}

.auth-alert.is-visible{
  display:block;
}

.auth-alert.is-error{
  background: rgba(255, 90, 90, 0.12);
  border-color: rgba(255, 90, 90, 0.35);
  color: #ff9c9c;
}

.auth-alert.is-success{
  background: rgba(0, 188, 212, 0.12);
  border-color: rgba(0, 188, 212, 0.35);
  color: #86e6f2;
}

.auth-field{
  display:flex;
  flex-direction:column;
  gap:6px;
}

.auth-field label{
  font-size:0.9rem;
  color: var(--text-light);
}

.auth-field input{
  background: rgba(15,20,30,0.85);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:10px;
  padding:12px 14px;
  color: var(--text-light);
  font-size:0.95rem;
  outline:none;
  transition:border-color .2s ease, box-shadow .2s ease;
}

.auth-field input:focus{
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0,188,212,0.15);
}

.auth-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
  font-size:0.85rem;
  color: var(--text-dark);
}

.auth-row a{
  color: var(--primary-color);
}

.auth-btn{
  width:100%;
  padding:12px 18px;
}

.auth-divider{
  display:flex;
  align-items:center;
  gap:10px;
  color: var(--text-dark);
  font-size:0.8rem;
}

.auth-divider::before,
.auth-divider::after{
  content:"";
  flex:1;
  height:1px;
  background: rgba(255,255,255,0.12);
}

.auth-alt{
  display:grid;
  gap:10px;
}

.auth-alt a{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border:1px solid rgba(255,255,255,0.12);
  padding:10px 14px;
  border-radius:10px;
  background: rgba(10,14,22,0.65);
  transition: border-color .2s ease, transform .2s ease;
}

.auth-alt a:hover{
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.auth-switch{
  margin-top:14px;
  font-size:0.9rem;
  color: var(--text-dark);
}

.auth-switch a{
  color: var(--primary-color);
}

@media (max-width: 1024px){
  .auth-shell{
    grid-template-columns: 1fr;
    gap:18px;
  }
  .auth-main{
    padding-top:24px;
  }
  .auth-side{
    display:none;
  }
  .auth-side::after{
    width:200px;
    height:200px;
  }
  .auth-feature{
    padding:10px 12px;
  }
  .auth-row{
    flex-direction:column;
    align-items:flex-start;
  }
}

@media (max-width: 560px){
  .auth-card,
  .auth-side{
    padding:22px;
  }
  .auth-main{
    padding:20px 16px 40px;
  }
  .auth-side h1,
  .auth-side h2{
    font-size: clamp(24px, 6vw, 30px);
  }
  .auth-card h2{
    font-size: 1.25rem;
  }
}

@media (max-width: 420px){
  .auth-main{
    padding:14px 10px 30px;
  }
  .auth-card,
  .auth-side{
    padding:18px 14px;
    border-radius:14px;
  }
  .auth-field input{
    padding:11px 12px;
    font-size:0.9rem;
  }
  .auth-btn{
    padding:11px 14px;
  }
}