body {
    background: #f1f1f1;
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
}

.panel-elegante {
    margin-top: 60px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.2);
}

.panel-elegante .panel-heading {
    background: #0d6efd !important;
    color: white !important;
}

.reloj {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
    color: #0d6efd;
}

#dni {
    margin-bottom: 20px;
}

#btnMarcar {
    margin-top: 10px;
}

.respuesta {
    margin-top: 15px;
    font-size: 18px;
    font-weight: bold;
}

.ok, .error {
    padding: 5px 10px;
    border-radius: 5px;
    display: inline-block;
}

.ok {
    background: rgba(0, 200, 0, 0.15);
    color: #0a8a0a;
}

.error {
    background: rgba(255, 0, 0, 0.15);
    color: #b00000;
}

.fade {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 1.5s ease, transform 1.5s ease;
}

.fade.hide {
    opacity: 0;
    transform: translateY(-10px);
}