*{
    box-sizing: border-box;
}

img{
    max-width: 100%;
}

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

h1{
    font-size: 3rem;
}
h2{
    font-size: 2rem;
}

body {
    background-color: var(--off-white-color);
    color: var(--text-color);
    font-family: "Roboto Mono", monospace;
    font-optical-sizing: auto;
    font-weight: 400;
    font-style: normal;
}

/* <uniquifier>: Use a unique and descriptive class name
// <weight>: Use a value from 100 to 700 */


:root{
    --off-white-color: #FAF9F6;
    --secondary-color: #D5DAE8;
    --text-color-and-border-color:#05294a;
    --link-color:green;
    --bg-gradient-color: rgb(190,203,215);
    --bg-gradient-linear: linear-gradient(180deg, rgba(190,203,215,1) 0%, rgba(250,249,246,1) 24%, rgba(250,249,246,1) 100%); 
    --bg--experiences-gradient-linear:linear-gradient(180deg, rgba(190,203,215,1) 0%, rgba(250,249,246,1) 70%, rgba(250,249,246,1) 100%); 
}

/*Header*/

header {
    position: -webkit-sticky;
    position: sticky;
    top: 0px;
}

div.header-container {  

    background: var(--bg-gradient-color);
    background: var(--bg-gradient-linear);
    border-bottom: 2px solid gray;
    border-top: 2px solid gray;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: 16px;
    padding-bottom: 16px;
    margin-bottom: 16px;
}

div.header-container > h2#random-text{
    padding: 4px;
}

/*Nav*/

div.header-container > nav.site-nav > ul#nav-ul{
    padding-top: 16px;
    display: flex;
}

div.header-container > nav.site-nav > ul#nav-ul > li {
    background: var(--bg-gradient-color);
    background: var(--bg-gradient-linear);
    border: 1px solid black;
    width: auto;
    text-align: center;
    padding: 0 8px;
    margin: 0 8px;
}

div.header-container > nav.site-nav > button.btn-toggle-nav{
    display: none;
    background-color: transparent;
}
  

/*portfolio piece - main*/
.portfolio-container{
    /*border: 2px solid purple;*/
    display: flex;
    margin: 32px;

}

.portfolio-piece{
    border: 2px solid var(--text-color-and-border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--secondary-color);
    box-shadow: 10px 10px 5px;
}

.portfolio-piece > h2 > a{
    color: var(--link-color);
}

.portfolio-piece > h2{
    border-bottom: 2px solid var(--link-color);
}

.portfolio-piece > p{
    padding: 16px;
}

.portfolio-pic{
    max-width: 500px;
    max-height: 500px;
    margin: 16px;
    border: 2px solid var(--text-color-and-border-color);
}

/*education */
.eductation-experience-skills-container{
    margin: 32px;
}

.education-experience-skills-piece{
    display: flex;
    justify-content: space-between;
    border: 2px solid var(--text-color-and-border-color);
    background: var(--bg-gradient-color);
    background: var(--bg--experiences-gradient-linear);
    box-shadow: 10px 10px 5px;
 
}

.education-experience-skills-piece > div{
   padding: 8px;
}

.education-experience-skills-piece > div > ul{
    padding: 32px;
 }


.education-experience-skills-piece > div > ul > li{
    list-style-type: square;
    margin: 16px;
 }

 .education-experience-skills-piece > div > h3{
    padding-bottom: 8px;
 }


main > h1{
    text-align: center;
}

main > h2{
    padding-top: 8px;
    padding-bottom: 8px;
    text-align: center;
}

/*footer*/
footer > div.header-container{
    background: var(--bg-gradient-color);
    background: var(--bg-gradient-linear);

    margin-top: 16px;
}

footer > div.header-container > ul{
    display: flex;
}

footer > div.header-container > ul > li{
    padding: 0 4px;
}

img.social-logo{
    max-width: 32px;
    max-height: 32px;
} 

/*Filter*/

div#blackout-filter{
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: black;
    opacity: 0.5;
    z-index: 2;
}


/*Utilities*/

.limited-width{
    /*border: 2px solid red;*/
    max-width: 1000px;
    margin: 0 auto;
    padding: 16px;
    flex: 1 1 0px;
}

.hide-el{
    display: none !important;
}



/*Media screen*/
@media screen and (max-width: 2064px) {
   div.portfolio-piece.limited-width{
        margin: 25px;
    }
}

@media screen and (max-width:1100px){

    .limited-width{
        min-width: 250px;
        margin: 25px;
    }

    div.header-container > nav.site-nav > ul#nav-ul{
        height: 100%;
        width: 128px;
        border: 2px solid black;
        position: fixed;
        top: 0;
        right: 0;
        justify-content: space-evenly;
        flex-direction: column;
        align-items: center;


        z-index: 3;
        background: var(--bg-gradient-color);
        background: var(--bg-gradient-linear);

    }

    div.header-container > nav.site-nav > button.btn-toggle-nav{
        display: block;
        position: fixed;
        top: 0;
        right: 0;
        z-index: 4;
    }
    .portfolio-pic{
        max-width: 150px;
        max-height: 150px;  
        margin: 8px;
        border: 2px solid var(--text-color-and-border-color); 
    }

    .education-experience-skills-piece{
        min-width: 0;
        min-height: 0;
    }
}

@media screen and (max-width: 650px){
    .portfolio-container{
        flex-direction: column;
    }

    .education-experience-skills-piece{
        flex-direction: column;
    }


    .header-container > h1{
        text-align: center;
        font-size: 2.5rem;
        margin-bottom: 4px;
    }

    #random-text{
        text-align: center;
        font-size: 1.5rem;
    }
}