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

/* Custom Properties */
:root {
    --ff-primary: "Source Sans 3", sans-serif;
    --ff-secondary: "Montserrat", sans-serif;

    --fw-reg: 400;
    --fw-bold: 700;

    --clr-light: #fff;
    --clr-dark: #303030;
    --clr-accent: #16e0bd;

    --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);
    padding-top: 80px;
    margin: 0;
    font-family: var(--ff-primary);
    font-size: var(--fs-body);
    line-height: 1.6;
}

/* Animation on Scroll */
.hidden {
    opacity: 0;
    filter: blur(5px);
    transform: translateX(-100%);
    transition: all 1.5s
}

.show {
    opacity:1;
    filter: blur(0);
    transform: translateX(0);
}

@media(prefers-reduced-motion) {
    .hidden {
        transition: none;
    }
}

section.intro,
section.my-services,
section.about-me,
section.my-work,
section.contact,
section.portfolio-item-individual {
    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;
}

/* Buttons */

.btn {
    display: inline-block;
    padding: .5em 2.5em;
    margin-bottom: 0.5em;
    background: var(--clr-accent);
    color: var(--clr-dark);
    text-decoration: none;
    cursor: pointer;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: var(--fw-bold);
    transition: transform all 200ms ease-in-out;
}

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

.btn__work {
    margin-right: 2em;
    margin-bottom: 2em;
}
/* Scroll to top button */

.myBtn {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 30px;
    z-index: 99;
    border: none;
    outline: none;
    background-color: var(--clr-accent);
    color: var(--clr-dark);
    cursor: pointer;
    padding: 15px;
    border-radius: 15px;
    font-size: 30px;
}

.myBtn:hover {
    background-color:#edefeb;
}

/* 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: .25em;
}

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

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

.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;
    border-radius: 10px;
}

/* To check later */
.section__subtitle--work {
    color: var(--clr-accent);
    font-weight: var(--fw-bold);
    margin-bottom: 2em; 
}

/* Header */

header {
    display: flex;
    justify-content: space-between;
    padding: 1em;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

header.sticky {
    background: var(--clr-dark);
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.logo {
    max-width: 150px;
}

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

    transform: translate(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;
}

.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: .5em;
    background: transparent;
    border: 0;
    cursor: pointer;
    position: absolute;
    right: 1em;
    top: 1em;
    z-index: 1000;
}

.nav-open .nav {
    transform: translateX(0);
    z-index: 100;
}

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

.nav-open .hamburger {
    transform: rotate(.625turn);
}

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

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


.hamburger {
    display: block;
    position: relative;
    background-color: var(--clr-accent);
    z-index: 1100;
}


.hamburger,
.hamburger::before,
.hamburger::after {
    background-color: var(--clr-accent);
    width: 2em;
    height: 3px;
    border-radius: 1em;
    z-index: 1000;
    transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    background-color: var(--clr-accent);
}

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

/* Intro section */

.intro {
    position: relative;
}

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

.section__subtitle--intro {
    display: inline-block;
}

@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;
        border-radius: 10px;
    }

    .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(../img/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;
    padding: 2rem;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.service:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 255, 204, 0.3);
}

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

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


/* About Me */

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

.about-me__img {
    box-shadow: var(--bs);
    max-width: 100%;
    border-radius: 10px;
    height: auto;
    display: block;
    margin: 0 auto;
}

@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));
    max-width: 1000px;
    margin: 0 auto;
}

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

.portfolio__img {
    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;

}

/* Contact Section */

.contact {
    background-color: var(--clr-dark);
    color: var(--clr-light);
    text-align: center;
    padding: 5em 2em;
    display: flex;
    justify-content: center;
    align-items: center;
}

.contact__container {
    width: 80%;
    margin: 0 auto;
    padding: 2em;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    box-shadow: var(--bs);
}

.contact__form_section__title {
    font-size: var(--fs-h2);
    color: var(--clr-accent);
    margin-bottom: 1em;
}

.contact__form {
    display: flex;
    flex-direction: column;
}

.contact_input {
    width: 100%;
    padding: 1em;
    margin-bottom: 1em;
    border: none;
    border-radius: 5px;
    font-size: var(--fs-body);
}

textarea.contact_input {
    resize: vertical;
    min-height: 150px;
}


.btn__contact {
    background: var(--clr-accent);
    color: var(--clr-dark);
    font-size: var(--fs-body);
    font-weight: var(--fw-bold);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 200ms ease-in-out;
}

.btn__contact:hover {
    transform: scale(1.05);
    background: #13c3a4;
}

@media (min-width: 768px) {
    .contact__container {
        padding: 3em;
    }
}

/* 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: .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 .5em;
}

.social-list__link {
    padding: .5em;
}

/* Individual portfolio item styles */

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

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

section.code-snippets,
section.what-i-learned {
    padding-top: 2em;
    padding-bottom: 1em;
    white-space: normal;
}

section.intro {
    padding: 5em 2em 0 2em;
}

.portfolio-item-individual {
    padding: 0 2em;
}