*{
    margin:0;
    padding:0;
    box-sizing:border-box;
}

body{
    font-family:Segoe UI,Arial,sans-serif;
    background:linear-gradient(135deg,#020617,#0f172a,#1e3a8a);
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
}

.box{
    width:95%;
    max-width:450px;
    background:rgba(15,23,42,.95);
    border-radius:24px;
    padding:35px;
    border:1px solid rgba(255,255,255,.08);
    box-shadow:0 20px 60px rgba(0,0,0,.5);
}

h2{
    color:#fff;
    margin-bottom:25px;
    text-align:center;
}

.input{
    margin-bottom:15px;
}

.input input,
.input select{
    width:100%;
    padding:14px;
    border-radius:12px;
    background:#020617;
    color:#fff;
    border:1px solid #334155;
}

.input input:focus,
.input select:focus{
    outline:none;
    border-color:#3b82f6;
}

button{
    width:100%;
    padding:14px;
    border:none;
    border-radius:14px;
    background:linear-gradient(135deg,#2563eb,#3b82f6);
    color:#fff;
    font-weight:bold;
    cursor:pointer;
    transition:.3s;
}

button:hover{
    transform:translateY(-2px);
}

.msg,
.erro{
    color:#fff;
    padding:12px;
    border-radius:12px;
    margin-bottom:15px;
    text-align:center;
    line-height:1.5;
}

.msg{background:#22c55e;}
.erro{background:#ef4444;}

.aviso-seguranca{
    margin-bottom:16px;
    padding:14px;
    border-radius:14px;
    background:#172554;
    border:1px solid #3b82f6;
    color:#dbeafe;
    font-size:13px;
    line-height:1.6;
    text-align:center;
}

.btn-voltar{
    display:block;
    width:100%;
    margin-top:12px;
    text-align:center;
    padding:14px;
    border-radius:14px;
    text-decoration:none;
    background:linear-gradient(135deg,#475569,#334155);
    color:#fff;
    font-weight:bold;
    transition:.3s;
}

.btn-voltar:hover{
    transform:translateY(-2px);
    background:linear-gradient(135deg,#334155,#1e293b);
}

.plano-info{
    margin-top:15px;
    padding:16px;
    border-radius:16px;
    background:linear-gradient(135deg,#0f172a,#1e293b);
    border:1px solid #3b82f6;
    color:#fff;
    line-height:1.6;
}

.plano-info h3{
    margin-bottom:8px;
    color:#93c5fd;
}

.plano-info .valor{
    font-size:22px;
    font-weight:bold;
    color:#22c55e;
    margin-bottom:10px;
}