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

body{
    background:#0f172a;
    color:#fff;
    font-family:Arial,Helvetica,sans-serif;
    display:flex;
    justify-content:center;
    align-items:center;
    min-height:100vh;
}

.login-card,
.dashboard{
    width:420px;
    background:#1e293b;
    border-radius:14px;
    padding:40px;
    box-shadow:0 15px 40px rgba(0,0,0,.35);
}

h1{
    margin-bottom:10px;
}

.subtitle{
    color:#94a3b8;
    margin-bottom:25px;
}

.error{
    background:#7f1d1d;
    color:#fff;
    padding:12px;
    border-radius:8px;
    margin-bottom:18px;
}

input{
    width:100%;
    padding:14px;
    margin-bottom:16px;
    border:none;
    border-radius:8px;
    background:#334155;
    color:white;
}

button,
.button{
    display:block;
    width:100%;
    padding:14px;
    text-align:center;
    text-decoration:none;
    background:#2563eb;
    color:white;
    border:none;
    border-radius:8px;
    cursor:pointer;
    font-size:16px;
}

.buttons{
    display:flex;
    flex-direction:column;
    gap:15px;
    margin-top:30px;
}

.logout{
    background:#dc2626;
}