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

body{
    background:linear-gradient(135deg,#0f172a,#1e293b);
    min-height:100vh;
    display:flex;
    justify-content:center;
    align-items:center;
    padding:20px;
}

.container{
    background:white;
    width:100%;
    max-width:500px;
    border-radius:20px;
    padding:40px;
    text-align:center;
    box-shadow:0 10px 30px rgba(0,0,0,0.3);
}

h1{
    color:#2563eb;
    margin-bottom:15px;
}

.subtitle{
    color:gray;
    margin-bottom:30px;
}

input{
    width:100%;
    padding:15px;
    border:2px solid #ccc;
    border-radius:10px;
    margin-bottom:20px;
    font-size:16px;
}

button{
    width:100%;
    padding:15px;
    background:#2563eb;
    border:none;
    color:white;
    border-radius:10px;
    font-size:16px;
    cursor:pointer;
}

button:hover{
    background:#1d4ed8;
}

.details{
    text-align:left;
    margin-top:20px;
    line-height:2;
}

.success-box{
    border-top:8px solid #22c55e;
}

.error-box{
    border-top:8px solid #ef4444;
}