:root{
  --bg1:#0b1020;
  --bg2:#111a33;
  --card:rgba(255,255,255,.08);
  --card2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.12);
  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.65);
  --shadow:0 18px 60px rgba(0,0,0,.45);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, "Noto Sans", "Liberation Sans", sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 600px at 15% 20%, #263a9a33, transparent 55%),
    radial-gradient(900px 500px at 80% 15%, #17c3ff22, transparent 55%),
    linear-gradient(160deg, var(--bg1), var(--bg2));
  overflow-x:hidden;
}

.bg{
  position:fixed; inset:0;
  background:
    radial-gradient(650px 250px at 40% 85%, #ffcc0022, transparent 60%),
    radial-gradient(500px 280px at 80% 60%, #9d4edd22, transparent 60%);
  pointer-events:none;
}

.topbar{
  position:sticky; top:0; z-index:5;
  display:flex; justify-content:space-between; align-items:center;
  gap:16px;
  padding:14px 18px;
  backdrop-filter: blur(10px);
  background: rgba(8,12,24,.55);
  border-bottom:1px solid var(--border);
}

.brand{display:flex; align-items:center; gap:12px;}
.logo{
  width:40px;height:40px;border-radius:12px;
  display:grid;place-items:center;
  background:rgba(255,255,255,.10);
  border:1px solid var(--border);
  box-shadow:0 10px 30px rgba(0,0,0,.25);
  font-weight:900;
}
.brand-title{font-weight:900;letter-spacing:.3px}
.brand-sub{font-size:12px;color:var(--muted);margin-top:2px}

.container{
  max-width:1100px;
  margin:22px auto;
  padding:0 16px 50px;
}

.grid{
  display:grid;
  grid-template-columns: 1.25fr .95fr;
  gap:18px;
}
@media (max-width: 920px){
  .grid{grid-template-columns:1fr}
}

.card{
  background: linear-gradient(180deg, var(--card), var(--card2));
  border:1px solid var(--border);
  border-radius:18px;
  box-shadow: var(--shadow);
}

.hero{
  padding:18px;
  overflow:hidden;
  position:relative;
}
.hero:after{
  content:"";
  position:absolute;
  inset:-40px -40px auto auto;
  width:260px;height:260px;
  border-radius:60px;
  background: radial-gradient(circle at 30% 30%, rgba(23,195,255,.25), transparent 60%);
  transform: rotate(12deg);
  filter: blur(.2px);
}

.h1{margin:6px 0 10px;font-size:38px;line-height:1.05;}
.p{margin:0 0 14px;color:var(--muted);max-width:62ch;}
.badges{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0 0;}
.badge{
  font-size:12px;
  padding:7px 10px;
  border-radius:999px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.82);
}

.how{
  margin-top:14px;
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap:12px;
}
@media (max-width: 620px){
  .how{grid-template-columns:1fr}
}
.step{
  padding:12px;
  border-radius:16px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.06);
}
.step-title{font-weight:900;margin-bottom:6px}
.step-text{color:var(--muted);font-size:13px;line-height:1.35}

.auth{
  padding:18px;
}
.tabs{display:flex;gap:10px;margin-bottom:12px;}
.tab{
  flex:1;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(255,255,255,.06);
  color:rgba(255,255,255,.82);
  font-weight:800;
  cursor:pointer;
}
.tab.active{
  background: linear-gradient(180deg, rgba(23,195,255,.28), rgba(23,195,255,.12));
  border-color: rgba(255,255,255,.22);
}
.form{display:grid;gap:10px;}
.label{font-size:12px;color:var(--muted);margin-top:6px}
.input{
  width:100%;
  padding:12px 12px;
  border-radius:14px;
  border:1px solid var(--border);
  background:rgba(0,0,0,.18);
  color:var(--text);
  outline:none;
}
.input:focus{border-color: rgba(255,255,255,.25);}

.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;}
.btn{
  appearance:none;
  border:1px solid var(--border);
  background:rgba(255,255,255,.08);
  color:var(--text);
  padding:11px 14px;
  border-radius:14px;
  cursor:pointer;
  font-weight:900;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.18);}
.btn:active{transform:translateY(0) scale(.99);}
.btn.primary{
  background: linear-gradient(180deg, rgba(23,195,255,.28), rgba(23,195,255,.14));
  border-color: rgba(255,255,255,.22);
}
.btn.ghost{background:rgba(255,255,255,.06);}
.btn.danger{
  background: linear-gradient(180deg, rgba(255,70,70,.26), rgba(255,70,70,.12));
  border-color: rgba(255,120,120,.25);
}
.note{font-size:12px;color:var(--muted);line-height:1.35;}

.msg{
  margin-top:8px;
  padding:10px 12px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background: rgba(0,0,0,.18);
  color: rgba(255,255,255,.85);
  display:none;
}
.msg.error{border-color: rgba(255,70,70,.25);}
.msg.ok{border-color: rgba(23,195,255,.25);}

.statusline{
  font-size:12px;color:var(--muted);
  margin-top:10px;
}

.loggedin{
  margin-top:12px;
  padding:12px;
  border-radius:16px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.06);
}
.bigwelcome{font-size:18px;font-weight:1000;margin:0 0 8px;}