html, body {
    height: 100%;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    display: flex;
    flex-direction: column;
}

#hola {
    background-color: #cb7c06;
    color: rgb(4, 0, 0);
    padding: 25px;
    text-align: center;
}

nav {
    background-color: #3ec752;
    padding: 15px 0;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 30px;
}

nav ul li a {
    color: black;
    text-decoration: none;
    font-weight: bold;
    padding: 8px 14px;
    border-radius: 6px;
}

nav ul li a:hover {
    background-color: rgba(0, 0, 0, 0.15);
}

#abla {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    padding: 30px;
    max-width: 1200px;
    margin: auto;
}

#programacion,
#estructura,
#redes,
#tecno {
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

#programacion {
    background-color: #ac9cf5;
}

#estructura {
    background-color: #9ce3f5;
}

#redes {
    background-color: #9ce3f5;
}

#tecno {
    background-color: #ac9cf5;
}

h2 {
    margin-bottom: 15px;
    border-bottom: 2px solid rgba(0,0,0,0.2);
    padding-bottom: 5px;
}

ul {
    padding-left: 20px;
    margin-top: 10px;
}

li {
    margin-bottom: 8px;
}

#programacion ul a,
#estructura ul a,
#redes ul a,
#tecno ul a {
    color: black;
    text-decoration: none;
}

#programacion ul a:hover,
#estructura ul a:hover,
#redes ul a:hover,
#tecno ul a:hover {
    text-decoration: underline;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
}