a {
    text-decoration: none;
    color: inherit;
    display: block;
}

header {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-gray-light);
    margin-bottom: var(--spacing-large);
    height: 7rem;
}

.logo {
    align-self: center;
    margin: var(--spacing-small);
    margin-left: 2.5rem;
}

.logo img {
    width: 12rem;
}

nav {
    display: flex;
    justify-content: center;
}

ul {
    font-family: var(--font-instrument);
    display: flex;
    justify-content: center;
    width: 100%;   
    font-size: 16pt;
    list-style: none;
    margin: 0;
    padding: 0;
}

li {
    white-space: nowrap;
    transition: all 0.3s ease;
    flex: 0 0 auto;
}

li a {
    text-align: center;
    padding: 0.5rem 1rem;
}

li:active, li:focus {
    text-decoration: underline;
}

li a:focus-visible {
    outline: 2px solid rgba(0, 0, 0, 0.5);
}

li:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

li.selected {
    font-weight: bold;
    border-bottom: 3px solid rgba(0, 0, 0, 0.3);
}

li.selected a {
    text-underline-offset: 4px;
}

@media (min-width: 768px) {
    header {
        flex-direction: row;
    }
    .logo {
        margin-left: 1.5rem;
    }
    .logo img {
        width: 20rem;
    }
    nav {
        align-items: flex-end;
    }
    ul {
        font-size: 18pt;
        gap: 0;
    }
    li {
        padding-right: var(--spacing-small);
        padding-left: var(--spacing-small);
    }
}

@media (min-width: 1024px) {
   .logo {
        margin: 1.5rem 1.5rem 1.5rem 3.5rem;
    }
    nav {
        align-items: flex-end;
        margin-right: 3rem;
    }
    li {
        padding-right: var(--spacing-medium);
    } 
}

@media (min-width: 1440px) {
    header {
        height: 10rem;
    }
    .logo {
        margin-left: 5.5rem;
    }
    .logo img {
        width: 25rem;
    }
    ul {
        font-size: 32pt;
    }
}

@media (orientation: landscape) and (max-width: 960px) {
    header {
        display: flex;
        flex-direction: row;
        margin-bottom: 1rem;   
        height: 5rem;
    }
   
    .logo img {
        width: 12rem;
    }
    ul {
        font-size: 16pt;
    }
    nav {
        align-items: flex-end;
    }
    li {
        padding-right: var(--spacing-small);
        padding-left: var(--spacing-small);
    }
    .logo {
        align-self: center;
        margin: var(--spacing-small);
        margin-left: 2.5rem;
    }
}