/* Basis‑Layout – leicht, responsiv und freundlich */
        * { box-sizing: border-box; margin:0; padding:0; }

        body {
            font-family: Arial, Helvetica, sans-serif;
            background: #f0f4f8;
            display: flex;
            height: 100vh;
            align-items: center;
            justify-content: center;
            background-image: linear-gradient(to right,
                rgb(152, 161, 216),
                rgba(209, 215, 224, 0.55),
                rgb(151, 161, 216));
        }

        .container {
            background:#fff;
            padding:2rem;
            border-radius:8px;
            box-shadow:0 4px 12px rgba(0,0,0,.1);
            max-width:540px;
            width:100%;
            text-align:center;
        }

        input[type=password]{
            width:100%;
            padding:.6rem;
            margin-top:.5rem;
            border:1px solid #ccc;
            border-radius:4px;
            font-size:1rem;
        }
        button{
            margin-top:.4rem;
            padding:.6rem 1.2rem;
            background:#0066ff;
            color:#fff;
            border:none;
            border-radius:4px;
            cursor:pointer;
        }
        button:hover{background:#0055dd;}
        .error{color:#d00;margin-top:.5rem;}