/* Estilos generales */
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #4facfe, #00f2fe);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

/* Barra superior */
.barra-superior {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    padding: 15px 0;
    display: flex;
    justify-content: center;
    gap: 20px;
    z-index: 1000;
}

/* Botones */
.boton {
    text-decoration: none;
    color: white;
    background: #0077cc;
    padding: 12px 25px;
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.3s ease;
}

/* Efecto hover */
.boton:hover {
    background: #00c6ff;
    transform: translateY(-3px) scale(1.08);
    box-shadow: 0 5px 15px rgba(0, 198, 255, 0.5);
}

/* Contenedor principal */
.contenedor {
    text-align: center;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

h1 {
    color: #333;
    margin-bottom: 20px;
}

marquee {
    color: #0077cc;
    font-size: 24px;
    font-weight: bold;
}