*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:#070a12;color:#f2f5fb;font-family:"Inter","SF Pro Display",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
body{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:radial-gradient(40% 50% at 15% 20%,rgba(0,173,242,.16),transparent 60%),radial-gradient(35% 45% at 85% 80%,rgba(91,140,255,.14),transparent 60%),#070a12}
.box{width:min(380px,92vw);background:rgba(22,27,40,.8);border:1px solid rgba(255,255,255,.08);border-radius:18px;padding:32px 28px;
  box-shadow:0 20px 60px rgba(0,0,0,.45);display:flex;flex-direction:column;gap:14px}
.box img{height:46px;align-self:flex-start}
h1{margin:6px 0 0;font-size:22px;letter-spacing:-.02em}
.sub{margin:0 0 6px;color:#8a94a8;font-size:13px}
label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#8a94a8;font-weight:600}
input{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:12px 14px;color:#f2f5fb;font-size:15px;outline:none}
input:focus{border-color:#5b8cff;box-shadow:0 0 0 3px rgba(91,140,255,.2)}
button{margin-top:6px;background:linear-gradient(135deg,#3fd0ff,#5b8cff);border:0;border-radius:10px;padding:12px;color:#07101f;font-weight:800;font-size:15px;cursor:pointer}
.err{margin:0;background:rgba(255,93,108,.12);border:1px solid rgba(255,93,108,.35);color:#ff9aa4;padding:10px 12px;border-radius:10px;font-size:13px}
.box form.stack{display:flex;flex-direction:column;gap:12px}
.ok{margin:0;background:rgba(63,208,140,.10);border:1px solid rgba(63,208,140,.35);color:#9fe8c4;padding:10px 12px;border-radius:10px;font-size:13px}
.box a{color:#3fd0ff;text-decoration:none}
details.pw{border-top:1px solid rgba(255,255,255,.08);padding-top:12px}
details.pw summary{cursor:pointer;color:#8a94a8;font-size:13px;margin-bottom:10px}