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

/* custom properties */ 

:root {
    --ff-primary: 'Source Sans Pro', sans-serif;;
    --ff-secondary: 'Source Code Pro', monospace;;

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

    --clr-light: #fff;
    --clr-dark: #303030; 

    --clr-accent: coral; 

    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
    --fs-body: 1rem; 
}

@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%; 
}

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

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

.btn {
    display: inline-block; 
    padding: .5em 2.5em; 
    background: var(--clr-accent);
    color: var(--clr-dark);
    text-decoration: none; 
    cursor: pointer; 
    font-size: .8rem; 
    text-transform: uppercase; 
    letter-spacing: 2px; 
    font-weight: var(--fw-bold);
    transition: transform 200ms ease-in-out; 

}

.btn:hover {
    transform: scale(1.1)
}

/* 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);
    padding: .25em 1em; 
    font-family: var(--ff-secondary);
    margin-bottom: 1em; 
}

.section__subtitle--work {
    color: var(--clr-accent);
    font-weight: var(--fw-bold);
    margin-bottom: 1em;
}

/* Header */

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

.logo {
    max-width: 100px;
    margin-left: 1em; 
}

.nav {
    position: fixed;
    background-color: 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-h2);
    text-decoration: none;
}

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

.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); 
    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; 
}



/* Intro Section */ 

.intro {
    position: relative;
}

.intro__img {
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
}

@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);
    }
}

/* my-services */

.my-services {
    background-color: var(--clr-dark);
    background-image: url(my-services.jpg); 
    background-size: cover; 
    background-blend-mode: multiply;
    color: var(--clr-light); 
    text-align: center;
}

.section__title--services {
    color: var(--clr-accent);
    position: relative; 

}


.section__title--services::after {
    content: ' ';
    display: block; 
    width: 2em; 
    height: 1px; 
    margin: 0.5em auto 1em; 
    background: var(--clr-light); 
    opacity: 0.25;
}

.services {
    margin-bottom: 4em; 
}

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

@media (min-width: 300px) {
    .services {
        display:flex; 
        max-width: 1000px; 
        margin-left: auto;
        margin-right: auto; 
    }

    .services + .service {
        margin-left: 2em; 
    }
}


.about-me {
    max-width: 1000px;
    margin: 0 auto; 
}

.about-me__img {
    box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
}

@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;
    }
}

/* My Work */

.my-work {
    background-color: var(--clr-dark);
    color: var(--clr-light);
    text-align: center;
}

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

.portfolio__item {
    background-color: var(--clr-accent);
    overflow: hidden; 
}

.portfolio__img {
    width: 100%;
    height: 100%;
    transition:
        transform 750ms cubic-bezier(.5, 0, .5, 1),
        opacity 250ms linear;
}

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

.portfolio__img:hover,
.portfolio__item:focus .portfolio__img {
    transform: scale(1.2);
    opacity: .5; 
}

/* footer */ 

.footer {
    background:#111; 
    color: var(--clr-accent);
    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);
}

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

.footer__link:hover{
    text-decoration: underline;
}

.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; 
}

/* Individual portfolio item styles */ 

.portfolio-item-individual {
    padding: 0 2em 2em;
    max-width: 1000px;
    margin: 0 auto; 
}

.youtube {
    display: block;
    width: 600px; 
    margin-left: auto;
    margin-right: auto;
    padding-top: 20px;
    padding-bottom: 20px;
}

.portfolio-item-individual p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto; 
}