html, body {
    font-family: 'Poppins', sans-serif;
    height: 100%;
    margin: 0;
    padding: 0;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../img/fondo.jpeg');
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    z-index: -1;
}

.logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    max-height: 80%;
    height: auto;
    z-index: 2;
}

.card {
    background-color: rgba(255, 255, 255, 0.9);
    position: relative;
    z-index: 1;
}

.btn:hover {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.form-control:focus {
    border-color: silver;
    box-shadow: 0 0 0 0.2rem rgb(128, 128, 128, 0.25);
}

@media (min-width: 768px) {
    .object-fit-cover {
        object-fit: cover;
        height: 100%;
    }
}

.footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2em;
    overflow: hidden;
    transition: height 1s ease;
    background-color: #3d3d3d;
    color: white;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-logo {
    max-width: 90px;
    height: auto;
    object-fit: contain;
    margin: 0 auto;
    display: block;
}

@media (max-width: 576px) {
    .footer-logo {
        max-width: 70px;
    }
}

.footer #container {
    width: 100%;
    flex-grow: 1;
    overflow-y: auto;
    padding: 0.5rem;
    overflow-x: hidden;
}

.footer:hover {
    height: 23em;
}

.footer #container::-webkit-scrollbar {
    width: 5px;
}

.footer #container::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.3);
    border-radius: 4px;
}

a, li {
    color: #fff;
    text-decoration: none;
    list-style: none;
}

    a:hover, li:hover {
        color: silver;
        cursor: pointer;
    }