html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body{
    display: grid;
    grid-template-areas: "header header header header"
                         "hero hero hero hero"
                         "about about about about"
                         "services services services services"
                         "projects projects projects projects"
                         "footer footer footer footer";
    grid-template-columns: repeat(4,1fr);
    font-size: 16px;
    font-family: 'Roboto', sans-serif;
    font-weight: 400; 
} 

/* HEADER */

.header{
    grid-area: header;
}

.header .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 4rem;
    min-height: 7.5rem;
}

.header .logo {
    font-weight: 700;
    font-size: 2.5rem;
    transition: 0.3s ease-in-out;
}

.header .logo:hover {
    color: coral
}

/* HERO */

.hero{
    grid-area: hero;
    height: 89vh;
    background: url('../images/lemons.jpg') center center no-repeat;
    background-size: cover;
    display: flex;
    justify-content: center;
    align-items: center;
}

 .hero h2{
    font-weight: 500;
    font-size: 40px;
}

.hero:after {
    content: url(../images/seta_preta.png);
    position: absolute;
    height: 35px;
    bottom: 40px;
    animation: downarrow 0.7s infinite alternate ease-in-out;
}

 @keyframes downarrow {

    0% { transform: translateY(0); opacity: 0.4; }

    100% { transform: translateY(0.4em); opacity: 0.9; }
}

/* ABOUT */

.about {
    display: grid;
    grid-area: about;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 2;
    background-color: #fff;
    max-width: var(--max-width-size);
    margin: 0 auto;
}

.about .item {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-content: center;
    padding: 20%;
}

.about .item h3 {
    font-weight: 600;
    font-size: 2.2rem;
}

.about .item p {
    margin: 25px 0;
    font-weight: 300;
    font-size: 1.5rem;
}

.about .item a {
    align-self: flex-start;
    font-size: 1.3rem;
    font-weight: 400;
}

.about .item .btn-know-more {
    font-weight: 600;
}

.about .item .btn-know-more:hover {
    font-weight: 700;
}

.about .image {
    height: 100%;
    width: 100%;
    background-size: cover;
}

.about .image.right {
    background: url(../images/bridge.jpg) center center no-repeat;

}

.about .image.left {
    background: url(../images/sky.jpg) center center no-repeat;
}

/* SERVICES*/

.services {
    grid-area: services;
    display: grid;
    grid-template-columns: 1fr 1fr;
    text-align: center;
}

.services .service {
    padding: 7rem 2rem;
}

.services .service img {
    width: 250px;
    margin-bottom: 30px;
}

.services .service p {
    font-size: 2rem;
    font-weight: 400;
    line-height: 25px;
    max-width: 400px;
    margin: 20px auto 0;
}

.services .service h3 {
    font-weight: 700;
    font-size: 2rem;
}

.services .service:nth-child(1) {
    background: blueviolet;
}

.services .service:nth-child(2) {
    background-color: lightpink;
}

/* PROJECTS */

.projects {
    grid-area: projects;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
}

.projects .project img {
    height: 100%;
    transition: 0.3s ease-in-out;
}

.projects .project a:hover img {
    opacity: 0.8;
}



/* FOOTER */

.footer {
    grid-area: footer;
    display: flex;
    background-color: lightgreen;  
    flex-direction: column;
    text-align: center;
    padding: 100px 0;
}

.footer h4 {
    font-weight: 700;
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.footer nav {
    margin: 50px 0;
}

.footer nav ul {
    display: flex;
    justify-content: center;
    max-width: 320px;
    margin: 0 auto;
}

.footer nav ul li a {
    margin: 20px;
    font-weight: 500;
    font-synthesis: 2rem;
    transition: 0.3s ease-in-out;
}

.footer nav ul li a:hover {
    font-weight: 700;
    color: #fff;
}

.footer .social i {
    font-size: 2rem;
    transition: 0.3s;
}

.footer .social a {
    margin: 20px;
}

.footer .social a:hover {
    color: #fff;
}