*,
*::before,
*::after {
    box-sizing: border-box;
}

/* Custom Properties */

:root {
    --ff-primary: 'Ubuntu', sans-serif;
    /*--ff-secondary: 'Ubuntu', monospace; */
    --ff-secondary: 'Chivo', sans-serif;

    --fw-reg: 300;
    --fw-bold: 900;

    /* #303030; */
    /* #46B1C9; */

    --clr-light: #fff; 
    --clr-dark:  #1A2023;
    --clr-accent-teal: #10A8A0;
    --clr-accent-ruby: #AA2422;

    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.25rem;
    --fs-body: 1rem;

    --bs: 0.25em 0.25em 0.75em rgba(0,0,0,0.25), 
          0.125em 0.125em 0.25em rgba(0,0,0,0.15);
}

@media (min-width: 800px) {
    :root{
        --fs-h1: 4.5rem;
        --fs-h2: 3.75rem;
        --fs-h3: 1.5rem;
        --fs-body: 1.125rem;
    }
}

/* General Styles */

html {
    scroll-behavior: smooth;
}

body {
    background: var(--clr-light);
    color: var(--clr-dark);
    margin: 0;
    font-family: var(--ff-primary);
    font-size: var(--fs-body);
    line-height: 1.6;
}

section {
    padding: 5em 2em;
}

img {
    display: block;
    max-width: 100%;
    min-width: 100%;
}

strong {
    font-weight: var(--fw-bold);
}

/*:focus{
    outline: 3px solid var(--clr-accent);
}*/

/* Typography */ 

h1,
h2,
h3 {
    line-height: 1;
    margin: 0;
}

h1{ font-size: var(--fs-h1); }
h2{ font-size: var(--fs-h2); }
h3{ font-size: var(--fs-h3); }

.section__title {
    margin-bottom: 0.25em;
}

.section__title--intro {
    font-weight: var(--fw-reg);
}

.section__title--intro strong{
    display: block;
}

.section__subtitle {
    margin: 0;
    font-size: var(--fs-h3);
}

.section__subtitle--intro,
.section__subtitle--about {
    background: var(--clr-accent-ruby);
    padding: 0.25em 1em;
    font-family: var(--ff-secondary);
    margin-bottom: 1em; 
}


.section__title--projects {
    margin-bottom: 0.45em;
}
.section__subtitle--projects {
    color: var(--clr-accent-teal);
    font-weight: var(--fw-bold);
    margin-bottom: 1.5em;
    font-family: var(--ff-secondary);
    font-size: var(--fs-body);
}

/* Intro Section */

.intro {
    position: relative;
}

.intro__img {
    box-shadow: var(--bs);
}

.intro > p {
    color: var(--clr-light);
}

@media (min-width: 600px){
    .intro {
        display: grid;
        width: min-content;
        margin: 0 auto;
        grid-column-gap: 1em;
        grid-template-areas:
            "img title"
            "img subtitle";
        grid-template-columns: min-content max-content;
    }

    .intro__img {
        grid-area: img;
        min-width: 250px;
        position: relative;
        z-index: 2;
    }

    .section__subtitle--intro {
        align-self: start;
        grid-column: -1/1;
        grid-row: 2;
        text-align: right;
        position: relative;
        left: -1.5em;
        width: calc(100% + 1.5em);
    }
}

/* Main interests section */

.my-interests{
    background-color: var(--clr-dark);
    background-image: url(../imgs/interests-bg.jpg);
    background-size: cover;
    background-blend-mode: multiply;
    color: var(--clr-light);
    text-align: left;
}

.section__title--interests {
    color: var(--clr-accent-teal);
    position: relative;
    text-align: center;
    padding: 0.5em;
}

/*
.section__title--interests::after{
    content: '';
    display: block;
    width: 3em;
    height: 1px;
    margin: 0.5em auto 1em;
    background: var(--clr-light);
    opacity: 0.5;
} */

.interest {
    max-width: 500px;
    margin: 0 auto;
}

.interest > h3 {
    color: var(--clr-accent-teal);
    text-align: left;
    font-family: var(--ff-secondary);
}

@media (min-width: 800px) {
    .interests {
        display: flex;
        max-width: 1250px;
        margin-left: auto;
        margin-right: auto;
    }

    .interest + .interest {
        margin-left: 2em;
    }
}

/* About Me section */

.about-me {
    max-width: 1250px;
    margin: 0 auto;
}

.about-me > p {
    color: var(--clr-light);
}

.about-me__img {
    box-shadow: var(--bs);
}

@media (min-width: 600px) {
    .about-me {
        display: grid;
        grid-template-columns: 1fr 200px;
        grid-template-areas: 
            "title img"
            "subtitle img"
            "text img";
        grid-column-gap: 2em;
    }

    .section__title--about {
        grid-area: title;
    }

    .section__subtitle--about {
        grid-column: 1/-1;
        grid-row: 2;
        position: relative;
        left: -1em;
        width: calc(100% + 2em);
        padding-left: 1em;
        padding-right: calc(200px + 4em);
    }

    .about-me__img {
        grid-area: img;
        position: relative;
        z-index: 2;
    }
}

/* Projects section */
.my-projects {
    background-color: var(--clr-dark);
    color: var(--clr-accent-teal);
    text-align: center;
}

.my-projects > p {
    color: var(--clr-light);
}

.portfolio {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.portfolio__item {
    background: var(--clr-accent-teal);
   /* overflow: hidden; */

    position: relative;
}

.portfolio__img {
   /* transition: 
        transform 750ms cubic-bezier(0.5, 0, 0.5, 1),
        opacity 250ms linear; */

    display: block;
    width: 100%;
    height: auto;
}

.portfolio__description {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    width: 100%;
    opacity: 0;
    transition: .5s ease;
    background-color: var(--clr-accent-ruby);
}

.portfolio__text {
    color: white;
    font-size: 20px;
    position: relative;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    text-align: left;
    padding: 2em;
}

/*.portfolio__item:focus {
    position: relative;
    z-index: 2;
} */

/*.portfolio__img:hover .portfolio__img ,
.portfolio__item:focus .portfolio__img  {
    transform: scale(1.2); 
    opacity: 0.5; 
} */

.portfolio__item:hover .portfolio__description {
    opacity: 1;
}

/* Footer section */
.footer {
    background: #111;
    color: var(--clr-accent-teal);
    text-align: center;
    padding: 2.5em 0;
    font-size: var(--fs-h3);
}

.footer a { 
    /*color: inherit;*/
    text-decoration: none;
}

.footer__link {
    font-weight: var(--fw-bold);
    color: var(--clr-accent-ruby);
}

.footer__link:hover,
.social-list__link:hover {
    opacity: 0.7;
}

.social-list {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 2em 0 0;
    padding: 0;
}

.social-list__item {
    margin: 0 0.5em;
}

.social-list__link {
    padding: 0.5em;
    color: var(--clr-accent-teal);
}

/* Header */

header {
    display: flex;
    justify-content: space-between;
    padding: 1em;
}

.logo {
    max-width: 50px;
}

.nav {
    position: fixed;
    background: var(--clr-dark);
    color: var(--clr-light);
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;

    transform: translateX(100%);
    transition: transform 250ms cubic-bezier(0.5,0,0.5,1);
}

.nav__list {
    list-style: none;
    display: flex;
    height: 100%;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
    margin: 0;
    padding: 0;
}

.nav__link {
    color: inherit;
    font-weight: var(--fw-bold);
    font-size: var(--fs-h3);
    text-decoration:  none;
}

.nav__link:hover {
    color: var(--clr-accent-teal);
}

.nav-toggle {
    padding: 0.5em;
    background: transparent;
    border: 0;
    cursor: pointer;
    position: absolute;
    right: 1em;
    top: 1em;
    z-index: 1000;
}

.nav-open .nav{
    transform: translateX(0);
}

.nav-open .nav-toggle {
    position: fixed;
}

.nav-open .hamburger {
    transform: rotate(0.625turn);
}

.nav-open .hamburger::before {
    transform: rotate(90deg) translateX(-6px);
}

.nav-open .hamburger::after {
    opacity: 0;
}


.hamburger {
    display: block;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    background: var(--clr-accent-ruby);
    width: 2em;
    height: 3px;
    border-radius: 1em;
    transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
}

.hamburger::before { top: 6px; }
.hamburger::after { bottom: 6px; }