html, body {
        margin: 0;
        padding: 0;
        height: 100%;
        overflow: hidden;
    }
    body {
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
        background-attachment: fixed;
        transition: background-image 1s ease-in-out;
        display: flex;
        justify-content: center;
        align-items: center;
        font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }

    .login-card {
        background: rgba(20, 20, 30, 0.9);
        color: #ffffff;
        padding: 40px 30px;
        border-radius: 20px;
        width: 100%;
        max-width: 400px;
        text-align: center;
        border: 2px solid #B84AFF;
        box-shadow: 0 0 30px #B84AFF80;
        animation: floatInfinite 3s ease-in-out infinite;
        transition: 0.3s all;
    }

    /* Animación de flotación */
    @keyframes floatInfinite {
        0% { transform: translateY(0); }
        50% { transform: translateY(-15px); }
        100% { transform: translateY(0); }
    }

    .login-card:hover {
        box-shadow: 0 0 50px #B84AFFcc, 0 0 100px #B84AFF4d;
        transform: translateY#B84AFFcc
    }
    .login-card img {
        font-weight: 700;
        color: #B84AFF;
        margin-bottom: 10px;
        height: 75px;
        width: auto;
        border-radius: 5px;
    }
    .login-card h3 {
        font-weight: 400;
        color: #aaa;
        margin-bottom: 30px;
    }
    .form-label i {
        margin-right: 8px;
        color: #B84AFF;
    }
    .form-control {
        background: #1f1f28;
        border: 1px solid #B84AFF;
        color: #fff;
    }
    .form-control:focus {
        background: #1f1f28;
        color: #fff;
        border-color: #B84AFF;
        box-shadow: 0 0 10px #B84AFF80;
    }

    .btn-login {
        background: #B84AFF;
        color: white;
        font-weight: 600;
        width: 100%;
        padding: 10px;
        border-radius: 50px;
        border: none;
        transition: 0.3s;
    }
    .btn-login:hover {
        background: #B84AFF;
    }
    .error {
        color: #ff6b6b;
        margin-top: 15px;
    }

    footer {
        position: absolute;
        bottom: 10px;
        width: 100%;
        text-align: center;
        color: white;
        font-weight: 500;
    }
    footer a {
        color: #ffffff;
        text-decoration: underline;
    }