:root {
    --black: #151515;
    --white: #fff;
    --green: #4DE19F;
    --grey: #c7c7c7;
    --greyBlack: #242424;
    --transition: .4s background-color, 0.3s color;
}
/* ==== Generals ==== */
*,
*::before,
*::after {
    box-sizing: inherit;
}
html {
    font-size: 62.5%;
    box-sizing: border-box;
    /* scroll-snap-type: y mandatory; */
}
body {
    font-size: 16px;
    /* 1rem = 10px */
    font-family: 'Space Grotesk', sans-serif;
    color: var(--white);
    background-color: var(--black);
}
h1 {
    font-weight: 700;
    font-size: 3.5rem;
}
h2 {
    font-weight: bold;
    font-size: 3rem;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    margin: 1rem 0;
}
h3 {
    font-size: 2.5rem;
}
h4 {
    color: var(--grey);
    text-transform: uppercase;
    font-weight: 400;
}
h1 span {
    box-sizing: content-box;
    box-shadow: inset 0 -.4rem var(--green);
}
h3 span {
    display: block;
    font-size: 1.3rem;
}
h1, h2, h3, h4 {
    margin: 0;
}
p {
    font-size: 1.5rem;
    color: var(--grey);
    text-align: center;
    margin: 0;
}
a {
    text-decoration: none;
    color: var(--white);
    transition: var(--transition);
}
a:hover {
    color: var(--green);
}
.button {
    color: var(--white);
    border: none;
    border-bottom: 2px solid var(--green);
    cursor: pointer;
    border-radius: 5px 5px 0 0;
    padding: 1rem;
    width: fit-content;
    text-transform: uppercase;
    box-sizing: border-box;
    font-size: 1.6rem;
    font-weight: 600;
    text-align:center;
    display: flex;
    align-items: center;
}
.button:hover {
    background-color: var(--green);
    color: var(--black);
    /* border-bottom-color: var(--black); */
    transition: var(--transition);
}
.back  {
    position: absolute;
    top: 2rem;
    left: 2rem;
    font-size: 2.5rem;
    transform: rotate(180deg);
    z-index: 1000;
}
/* Presentation */
.presentation {
    height: 100vh;
    border-bottom: .1rem solid var(--white);
    width: 100%;
    display: grid;
    grid-template: 11rem 1fr / 1fr;
    align-content: center;
    background-color: var(--black);
    padding: 3rem 2rem 0;
}
.presentation header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
}

.presentation header .social {
    display: flex;
    justify-content: space-between;
    width: 18rem;
}
.social .fa-brands {
    font-size: 2.1rem;
}
.presentation .contentinfo {
    display: grid;
    justify-items: center;
    grid-template: 1fr 1fr / 1fr;
}
.contentinfo img {
    width: 18rem;
}
.contentinfo .info {
    display: flex;
    flex-direction: column;
    justify-content: start;
    align-items: center;
    text-align: center;
    padding: 1rem 0;
}
.info p {
    margin-top: 3rem;
    margin-bottom: 1rem;
}
.info h1 span:hover {
    color: var(--green);
    transition: var(--transition);
}
.experience {
    display: flex;
    flex-direction: column;
    width: 100%;
    align-items: center;
    text-align: center;
    justify-content: center;
    gap: 3rem;
    padding: 5rem 7rem;
    border-bottom: .1rem solid var(--white);
    background-color: var(--black);
}
.experience .technology {
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    gap: .7rem;
}
.experience .technology h2 {
    display: flex;
    justify-content: center; 
}
.portfolio {
    padding: 7rem 2rem;
    background-color: var(--black);
}
.portfolio__header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 3rem;
}
.portfolio__projects {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}
.portfolio__projects .project {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.portfolio__projects .project img {
    width: 100%;
    align-self: center;
}
.portfolio__projects .project div {
    display: flex;
    gap: 2rem;
}
.contact {
    background-color: var(--greyBlack);
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 3rem;
    justify-content: center;
    padding: 4rem 3rem;
    border-bottom: .1rem solid var(--white);
}
.contact .text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

.contact form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
}
.contact form input,
.contact form textarea {
    width: 100%;
    color: var(--green);
    background: none;
    border: none;
    padding: 1rem;
    border-bottom: .1rem solid var(--white);
    font-size: 1.4rem;
    outline: none;
}
.footer {
    background-color: var(--greyBlack);
    display: flex;
    flex-direction: column;
    padding: 5rem 3rem;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}
.footer header {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-evenly;
}
.footer .social {
    display: flex;
    justify-content: space-between;
    width: 18rem;
}
@media(min-width: 768px) {
    h1 {
        font-size: 7rem;
        margin-top: 4rem;
        margin-bottom: 4rem;
    }
    h2 {
        font-size: 5rem;
    }
    h3 {
        font-size: 3.4rem;
    }
    p {
        font-size: 1.85rem;
    }
    .presentation {
        padding: 3rem 5rem 0;
        position: relative;
        z-index: 0;
    }
    .presentation header {
        display: flex;
        flex-direction: row;
        justify-content: space-between;
    }
    .presentation .social {
        justify-content: start;
        width: 20rem;
    }
    .social .fa-brands {
        font-size: 2.8rem;
    }
    .presentation .contentinfo {
        display: flex;
    }
    .presentation .contentinfo img{
        position: absolute;
        top: 0;
        right: 0;
        width: 37rem;
        z-index: -1;
    }
    .presentation .contentinfo .info {
        display: flex;
        flex-direction: column;
        align-items: start;
        width: 65%;
        text-align: left;
    }
    .info p {
        text-align: left;
    }
    .info .button {
        margin-top: 3rem;
    }
    .experience {
        display: grid;
        grid-template: repeat(3, 1fr) / 1fr 1fr;
    }
    .experience .technology {
        align-items: start;
        gap: 1.5rem;
    }
    .portfolio__projects {
        display: grid;
        grid-template: 1fr / 1fr 1fr
    }
    .contact {
        padding-left: 20rem;
        padding-right: 20rem;
    }
    .footer {
        flex-direction: row;
        justify-content: space-between;
    }
}
@media(min-width: 1200px) {
    h1 {
        font-size: 10rem;
    }
    h2 {
        font-size: 6rem;
    }
    h4 {
        font-size: 2.3rem;
    }
    p {
        font-size: 2.5rem;
    }
    .button {
        font-size: 2rem;
    }
    .presentation {
        position: relative;
        padding-left: 15rem;
        padding-right: 15rem;
    }
    .presentation header .social {
        width: 20rem;       
    }
    .presentation .contentinfo {
        position: relative;
    }
    .presentation .contentinfo .info {
        display: flex;
        flex-direction: column;
        align-items: start;
        width: 70%;
        text-align: left;
    }
    .presentation .contentinfo img{
        position: absolute;
        top: -15rem;
        right: 0;
        width: 46rem;
        z-index: -1;
    }
    .contentinfo .info p {
        width: 40rem;
    }
    .experience {
        grid-template: repeat(2, 1fr) / repeat(3,1fr);
        padding-left: 15rem;
        padding-right: 15rem;
    }
    .experience .technology p {
        text-align: left;
    }
    .portfolio {
        padding-left: 15rem;
        padding-right: 15rem;
    }
    .portfolio__projects {
        row-gap: 3em;
        column-gap: 5rem;
    }
    .contact{
        flex-direction: row;
        justify-content: space-between;
        align-items: start;
        gap: 0rem;
        padding-left: 15rem;
        padding-right: 15rem;
    } 
    .contact .text {
        flex-basis: 40%;
        align-items: start;
        margin-top: 5rem;
    }
    .text h2 {
        font-size: 7rem;
    }
    .text p {
        text-align: left;
    }
    .contact form {
        flex-basis: 50%;
        align-items: end;
    }
    .footer {
        padding-left: 15rem;
        padding-right: 15rem;
    }
}