/* ========== Base ========== */
:root{
  --bg:#0b0f1a;
  --card:#0f1629cc;
  --stroke:#1f2a44;
  --txt:#d9e1ff;
  --muted:#93a0c3;
  --accent:#7c5cff;
  --accent-2:#15f7ff;
  --error:#ff5470;
  --radius:22px;
  --shadow:0 10px 40px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Plus Jakarta Sans", system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji";
  color:var(--txt);
  background:radial-gradient(1200px 800px at 20% 10%, #0d1530 0%, #0b0f1a 55%, #06080f 100%);
  overflow:hidden;
}

#bg{
  position:fixed; inset:0;
  width:100%; height:100%;
  z-index:-2; display:block;
}

.shell{
  position:relative;
  min-height:100dvh;
  display:grid;
  place-items:center;
  padding:24px;
}

.card{
  width:min(92vw, 540px);
  border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(16, 24, 46, .82), rgba(10,14,25,.78)) border-box;
  border:1px solid transparent;
  box-shadow:var(--shadow);
  position:relative;
  overflow:hidden;
  isolation:isolate;
  backdrop-filter: blur(12px);
}
.card::before{
  content:"";
  position:absolute; inset:-1px;
  background:
    radial-gradient(800px 300px at -40% -20%, rgba(124,92,255,.25), transparent 60%),
    radial-gradient(800px 300px at 140% 120%, rgba(21,247,255,.2), transparent 60%);
  z-index:-1; filter:saturate(120%);
}
.card::after{
  content:"";
  position:absolute; inset:0;
  border-radius:inherit;
  padding:1px;
  background:linear-gradient(135deg, rgba(124,92,255,.8), rgba(21,247,255,.6));
  -webkit-mask:
     linear-gradient(#000 0 0) content-box, 
     linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  z-index:-1; opacity:.25;
}

.card__head{
  padding:28px 28px 10px;
  text-align:center;
}
.logo{
  display:flex; gap:12px;
  align-items:center; justify-content:center;
  font-family:"Orbitron", sans-serif;
  letter-spacing:.5px;
}
.logo .ufo{font-size:28px}
.logo .brand{
  font-size:20px; color:#fff;
}
.logo .accent{color:var(--accent-2)}

.title{
  margin:18px 0 6px;
  font:700 28px/1.2 "Orbitron", sans-serif;
}
.subtitle{
  margin:0 0 8px;
  color:var(--muted); font-size:14px;
}

.form{ padding:20px 28px 8px; display:grid; gap:18px; }

.field label{
  display:block; font-weight:600; margin:0 0 8px; color:#cdd7ff;
}
.input-wrap{
  position:relative;
}
.input-wrap input{
  width:100%;
  border-radius:16px;
  border:1px solid var(--stroke);
  background:rgba(8,12,22,.6);
  color:var(--txt);
  padding:16px 46px 16px 44px;
  outline:none;
  transition:border-color .2s, box-shadow .2s, transform .08s;
  box-shadow: inset 0 0 0 9999px rgba(255,255,255,.02);
}
.input-wrap input::placeholder{color:#7b89b3}
.input-wrap input:focus{
  border-color:rgba(124,92,255,.8);
  box-shadow:0 0 0 6px rgba(124,92,255,.15), 0 0 0 1px rgba(124,92,255,.4) inset;
}
.input-wrap .ix{
  position:absolute; left:14px; top:50%; transform:translateY(-50%);
  pointer-events:none; opacity:.9;
}
.toggle-pass{
  position:absolute; right:10px; top:50%; transform:translateY(-50%);
  border:0; background:transparent; color:#cbd6ff; font-size:18px; cursor:pointer;
  padding:6px; border-radius:10px;
}
.toggle-pass:hover{ background:rgba(255,255,255,.06) }

.btn{
  position:relative;
  display:inline-flex; align-items:center; justify-content:center;
  width:100%;
  border-radius:16px;
  padding:14px 18px;
  border:1px solid rgba(124,92,255,.6);
  background:linear-gradient(180deg, rgba(124,92,255,.35), rgba(21,247,255,.22));
  color:#fff; font-weight:700; letter-spacing:.3px;
  cursor:pointer; overflow:hidden;
}
.btn__glow{
  position:absolute; inset:-2px;
  background:
    radial-gradient(200px 80px at var(--mx,50%) 0%, rgba(255,255,255,.25), transparent 45%),
    radial-gradient(600px 200px at 50% 100%, rgba(124,92,255,.25), transparent 60%);
  mix-blend-mode:screen; filter:blur(10px);
}
.btn:hover{ transform:translateY(-1px) }
.btn:active{ transform:translateY(0) scale(.997) }
.btn__text{ position:relative; z-index:1 }

.error{
  margin:2px 0 6px;
  padding:10px 12px;
  border:1px solid rgba(255,84,112,.5);
  background:linear-gradient(180deg, rgba(255,84,112,.18), rgba(255,84,112,.08));
  color:#ffd9df; border-radius:12px; font-size:14px;
}

/* footer */
.card__foot{
  padding:16px 24px 22px;
  text-align:center; color:var(--muted); font-size:12px;
  border-top:1px dashed rgba(255,255,255,.06);
}

/* small screens */
@media (max-width:420px){
  .title{ font-size:24px }
  .logo .brand{ font-size:18px }
}

/* accessibility tweaks */
@media (prefers-reduced-motion: reduce){
  *{ animation:none !important; transition:none !important }
}