html,
body {
    height: 100%;
    margin: 0;
    display: flex;
    flex-direction: column;
}

body {
    background:
        linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.8)),
        url("../IMAGENES/Netflix.jpg") no-repeat center center fixed;
    background-size: cover;
    color: #fff;
}

.navbar {
    background-color: #c62828 !important;
}

.card {
    background-color: rgba(40, 40, 40, 0.85);
    transition: transform 0.2s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 15px rgba(255, 0, 0, 0.3);
}

footer {
    background-color: rgba(0, 0, 0, 0.9);
    color: #aaa;
    padding: 20px;
    text-align: center;
    margin-top: auto;
}