body{margin:0;font-family:Inter,Arial,sans-serif;background:#0b0b0b;color:#fff;display:flex;align-items:center;justify-content:center;min-height:100vh;overflow:hidden}
.bg{position:fixed;inset:0;background:
radial-gradient(circle at 15% 15%,rgba(255,106,0,.45),transparent 25%),
radial-gradient(circle at 80% 20%,rgba(255,200,0,.22),transparent 28%),
radial-gradient(circle at 50% 100%,rgba(255,80,0,.18),transparent 35%),
linear-gradient(135deg,#090909,#171717,#090909)}
.card{position:relative;width:390px;background:rgba(25,25,25,.72);backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.08);border-radius:24px;padding:42px;box-shadow:0 20px 60px rgba(0,0,0,.55);text-align:center}
.logo{height:58px;margin-bottom:18px}
h2{margin:0;font-size:32px}p{color:#cfcfcf;margin:10px 0 28px}
input{width:100%;padding:15px 16px;margin:10px 0;border-radius:12px;border:1px solid #444;background:#111;color:#fff;font-size:15px}
input:focus{outline:none;border-color:#ff8c2b;box-shadow:0 0 0 3px rgba(255,140,43,.2)}
button{width:100%;padding:15px;border:none;border-radius:12px;background:linear-gradient(90deg,#ff6a00,#ffb000);font-weight:700;font-size:16px;cursor:pointer}
button:hover{filter:brightness(1.05)}
.err{background:#5d1d1d;color:#ffd2d2;padding:10px;border-radius:10px;margin-bottom:12px}