:root{

    --background-color: #04315c;

    --darker-background-color: #043d72;

    --accent-color: #410ad6;

    --navbar-height: 85px;
}
*{

    margin: 0;

    padding: 0;

    font-size: 22px;

    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    color: var(--text-color);
}

main{
    height: 100%;
}

html{

    height: 100%;

}

body{

    height: 100%;
}

nav{
    --text-color: hsl(0, 0%, 100%);

    height: var(--navbar-height);

    background-color: var(--background-color);

    display: flex;

    justify-content: space-between;

    align-items: center;


}
 #logo{
    width: 70px;
    
    height: 70px;
    
}
nav .logo{

    margin-left: 30px;

    font-family: Arial, Helvetica, sans-serif;

    font-size: 22px;

    font-variant: small-caps;

    text-decoration: none;

    display: flex;

    justify-content: center;

    align-items: center;

}

nav ul{

    height: 100%;

    display: flex;

    flex-direction: row;

    justify-content: flex-end;

    align-items: center;

    list-style: none;

}

nav li{

    height: 100%;

    width: 170px;

    text-align: center;

    position:relative;


}

nav li:hover{

    background: var(--accent-color);

}

nav ul a{

    height: 100%;

    width: 100%;



    display: flex;

    justify-content: center;

    align-items: center;

    text-decoration: none;

}

.dropdown{

    height: min-content;

    width: 170px;

    background: var(--background-color);



    display: none;

    flex-direction: column;

    

    position: absolute;

    left: 0;

    top: var(--navbar-height);  

}

.dropdown li{

    height: 70px;

    width: 100%;
   

}

.dropdown li a{



    justify-content: center;
    text-align: center;
   

    
}

nav li:hover .dropdown{

    display: flex;

}

nav input[type="checkbox"]{

    display: none;

}

.expandable_li{

    display: flex;

    justify-content: center;

    align-items: center;

}

.toggle_button{

    width: 30px;

    height: 23px;



    position: absolute;

    top: 25px;

    right: 25px;

    display: none;

    flex-direction: column;

    justify-content: space-between;

}

.bar{

    height: 4px;

    width: 100%;

    background: var(--text-color);

    border-radius: 100px;

}

@media(max-width: 900px){

    .toggle_button{

        display: flex;
    }

    nav ul{

        height: min-content;

        width: 100%;

        background-color: var(--background-color);

        display: none;

        position: absolute;

        top: var(--navbar-height);
    }

    nav li{

        height: min-content;

        width: 100%;
     
    }

    nav ul a{

        padding: 30px 0;

    }

    .expandable_li{

        display: block;

    }

    .expandable_li label{

        padding: 30px 0;

        cursor: pointer;

        display: block;

    }

    .expandable_li:hover .dropdown{

        display: block;

    }

    .expandable_li input[type="checkbox"]:checked ~ .dropdown{

        display: flex;

    }

    .dropdown{

        
        position: static;

        width: 100%;
        

    }

    .dropdown li{

        padding: 0;

        display: block;

        position: static;

        background: var(--darker-background-color);

    }

    .dropdown li a{

        width: 100%;

        padding: 0;

        justify-content: center;
  
    }

    #toggle_button:checked ~ ul{

        display: block;
    }

}