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

body{
    font-family:Arial,sans-serif;
    background:linear-gradient(135deg,#eaf6ff,#ffffff);
    height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
}

.login-wrapper{
    width:100%;
    display:flex;
    justify-content:center;
    align-items:center;
}

.login-card{
    width:420px;
    background:#fff;
    border-radius:24px;
    padding:40px;
    box-shadow:0 15px 40px rgba(0,0,0,.08);
}

.logo{
    width:120px;
    display:block;
    margin:auto;
    margin-bottom:20px;
}

h1{
    text-align:center;
    color:#1d3557;
}

.subtitle{
    text-align:center;
    margin-top:10px;
    color:#7b8da6;
}

input{
    width:100%;
    margin-top:18px;
    padding:15px;
    border-radius:14px;
    border:1px solid #dfe8f3;
    outline:none;
}

button{
    width:100%;
    margin-top:22px;
    padding:15px;
    border:none;
    border-radius:14px;
    background:#2f80ed;
    color:#fff;
    font-size:16px;
    cursor:pointer;
}

button:hover{
    opacity:.9;
}

.error-box{
    background:#ffeaea;
    color:#c0392b;
    padding:12px;
    border-radius:10px;
    margin-top:20px;
    text-align:center;
}