body.pagina-especial {
    background: linear-gradient(to right, #f5f7fa, #c3cfe2);
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Fondo con imagen desenfocada */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: url('img/fondo.jpg') no-repeat center center;
    background-size: cover;
    filter: blur(8px);
    z-index: -1;
    transform: scale(1.1);
}

/* Contenedor efecto vidrio */
.glass-container {
    max-width: 700px;
    margin: 40px auto;
    padding: 30px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    color: #000;
    text-align: center;
}

/* Botón */
.boton-volver {
    display: inline-block;
    margin-top: 20px;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    text-decoration: none;
    border-radius: 6px;
    transition: 0.3s ease;
}

.boton-volver:hover {
    background-color: #45a049;
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* Mensajes */
.mensaje-exito {
    background-color: #dff0d8;
    color: #3c763d;
    padding: 15px;
    border-left: 6px solid #3c763d;
    border-radius: 8px;
    margin-bottom: 20px;
}

.mensaje-error {
    background-color: #f2dede;
    color: #a94442;
    padding: 15px;
    border-left: 6px solid #a94442;
    border-radius: 8px;
    margin-bottom: 20px;
}