* {

    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

body 

.navbar {
    position: fixed; /* Fija el menú en la parte superior */
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000; /* Mayor que las tarjetas */
}

.card {
    position: relative; /* Asegura que z-index funcione */
    z-index: 1; /* Menor que el menú */
    margin-top: 100px; /* Ajusta para que no se solapen con el menú */
}
.card {
    position: relative;
    width: 1200px;
    height: 700px;
    margin: 30px;
}

.card .face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: 10px;
    overflow: hidden;
    transition: .0s;
}

.card .front {
    transform: perspective(600px) rotateY(0deg);
    box-shadow: 0 5px 10px #000;
}

.card .front img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card .front h3 {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 45px;
    line-height: 45px;
    color: #fff;
    background: rgba(0,0,0,.4);
    text-align: center;
}

.card .back {
    transform: perspective(600px) rotateY(180deg);
    background: rgb(3, 35, 54);
    padding: 15px;
    color: #f3f3f3;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    box-shadow: 0 5px 10px #000;
}

.card .back .link {
    border-top: solid 1px #f3f3f3;
    height: 50px;
    line-height: 50px;
}

.card .back .link a {
    color: #f3f3f3;
}

.card .back h3 {
    font-size: 30px;
    margin-top: 20px;
    letter-spacing: 2px;
}

.card .back p {
    letter-spacing: 1px;
} 

.card:hover .front {
    transform: perspective(600px) rotateY(180deg);
}

.card:hover .back {
    transform: perspective(600px) rotateY(360deg);
}

.menu {
    text-align: center;
    margin-bottom: 30px; /* Espacio debajo del menú */
}

.menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.menu ul li {
    display: inline-block;
    margin: 10px;
}

.menu ul li a {
    text-decoration: none;
    color: white;
    font-weight: bold;
    padding: 10px 15px;
    background: #308b79;
    border-radius: 5px;
    transition: background 10.3s ease-in-out;
}

.menu ul li a:hover {
    background: #005f4a;
}

html {
    scroll-behavior: smooth; /* Desplazamiento suave */
}