*,
*::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-background: #808080;
    --clr-light: #aab8c2;
    --clr-dark: #303030;
    --clr-accent: #a9edff;
    
    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.25rem;
    --fs-h4: 2rem;
    --fs-body: 1rem;

    --bs: 0.55em 0.55em 1em rgba(0,0,0,.25),
          0.125em 0.125em 0.25em rgba(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-background);
    color: var(--clr-dark);
    margin: 0;
    font-family: var(--ff-primary);
    font-size: var(--fs-body);
    line-height: 1.6;
}

body::-webkit-scrollbar {
    width: 0.75rem;
}

body::-webkit-scrollbar-track {
    background: gray;
}

body::-webkit-scrollbar-thumb {
    background: #565656;
}

section {
    padding: 5em 2em;
}

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

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

/* Buttons */

.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,
h4 {
    line-height: 1;
    margin: 0;
}

h1 { font-size: var(--fs-h1) }
h2 { font-size: var(--fs-h2) }
h3 { font-size: var(--fs-h3) }
h4 { font-size: var(--fs-h4) }


.section__title {
    margin-bottom: .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: 2em;
}


/* header */

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

.logo {
    max-width: 100px;
}

/* Nav */

.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(.5, 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;
}

.desktop_nav__list li {
    list-style-type: none;
    display: inline-block;
    margin: .5em;
}

.desktop_nav__link {
    color: inherit;
    font-weight: var(--fw-bold);
    font-size: var(--fs-h4);
    text-decoration: none;
}

.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: 2em;
    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 { /* Hamburger is sticky, change pos to relative, remove top, right to fix */
    display: block;
    position: fixed;
    top: 35px;
    right: 30px;
}

.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; }

/* Phone Nav for lower px*/

@media screen and (min-width:720px){
    .hamburger{
    display:none;
    }
    .desktop__nav{
    display:inline;
    }
    }

/* Desktop Nav for higher px*/

    @media screen and (max-width:720px){
    .hamburger{
    display:block;
    }
    .desktop__nav{
    display:none;}
    }

/* Intro section */

.intro { 
    position: relative;
}

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

@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 projects section */

.my-services {
    background-color: var(--clr-dark);
    background-image: url(background.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: 2.25em;
    height: 1px;
    margin: 0.5em auto 1em;
    background: var(--clr-light);
    opacity: 0.20;
}

.services {
    margin-bottom: 4em;
}

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

@media (min-width: 800px) {
    .services {
        display: flex;
        max-width: 1000px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .service + .service {
        margin-left: 2em;
    }
}

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

.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 + 3.5em)
    }

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

/* My projects */

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

.portfolio {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

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

.portfolio__img {
    width: 500px;
    height: 300px;
    transition: 
        transform 750ms cubic-bezier(.5, 0, .5, 1);
        opacity: 250ms linear; 
}

.portfolio__img:hover {
    transform: scale(1.2);
    opacity: .60;
}

/* Dropdown menu for project list links */

.dropbtn {
    background-color: var(--clr-accent);
    color: var(--clr-dark);
    padding: 20px;
    font-size: 16px;
    border: none;
    cursor: pointer;
  }
  
  .dropdown {
    position: flex;
    display: inline-block;
    left: -50%;
  }
  
  .dropdown-content {
    display: none;
    position: absolute;
    background-color: #f9f9f9;
    min-width: 160px;
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
    z-index: 1;
  }
  
  .dropdown-content a {
    color: black;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
  }
  
  .dropdown-content a:hover {background-color: var(--clr-background)}
  
  .dropdown:hover .dropdown-content {
    display: block;
  }
  
  .dropdown:hover .dropbtn {
    background-color: var(--clr-accent);
  }


/* Footer */

.footer {
    background: #111;
    color: var(--clr-accent);
    text-align: center;
    padding: 2.5em 0;
}

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

.footer__link {
    font-size: var(--fs-h3);
    font-weight: var(--fw-bold)
}

.footer__link:hover,
.social-list__link:hover {
    opacity: .7;
}

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

/* Social Items and Icons */

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

.social-list__item {
    margin: 0 .5em;
}

.social-list__link {
    padding: .5em
}

/* Projects Page */
/* Projects Img */
.project-page {
    background-color: var(--clr-dark);
    color: var(--clr-light);
    text-align: center;
}

.project {
    display: inline-block;
}

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

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