:root {
    --text-color: #2e2e30;
    --violet: #404baf;
    --turquoise: #589b97;
    --gray: #efefef;
}
body,
div,
dl,
dt,
dd,
ul,
li,
h1,
h2,
h3,
h4,
h5,
h6,
pre,
code,
form,
fieldset,
input,
textarea,
p,
blockquote,
th,
td,
menu {
    margin: 0;
    padding: 0;
}

table {
    border-collapse: collapse;
    border-spacing: 0;
}

fieldset,
img,
abbr {
    border: 0;
}

address,
caption,
cite,
code,
dfn,
em,
th,
var {
    font-style: normal;
    font-weight: normal;
}

ul li {
    list-style: none;
}

caption,
th {
    text-align: left;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-size: 100%;
}

sup {
    vertical-align: text-top;
}

sub {
    vertical-align: text-bottom;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
    font-weight: inherit;
}

legend {
    color: #000;
}

article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section,
main {
    display: block;
}

img {
    max-width: 100%;
    height: auto;
}

/*------------------------------------------*/

html, body {
    font-family: 'Roboto', sans-serif;
    font-size: 16px;
    color: var(--text-color);
}

h1 {
    font-size: 60px;
    margin-bottom: 24px ;
}

h2 {
    font-size: 36px;
    margin-bottom: 80px;
    text-align: center;
}

h3, h4 {
    font-size: 24px;
    margin-bottom: 16px;
}

.wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -16px;    
}

.col {
    margin: 0 16px;  
}

.between {
    justify-content: space-between;
}

.menu {
    width: calc(100% - 32px);
}

.menu ul {
    display: flex;
    flex-wrap: wrap ;
    justify-content: center;
}

.menu a {
    text-decoration: none;
    text-transform: uppercase;
    color: var(--text-color);
    padding: 0 16px;
    line-height: 3em;
    display: block;
}

.menu a:hover {
    color: var(--violet);
}

.hero_text {
    width: calc(50% - 32px);
    display: flex;
    flex-wrap: wrap;
    flex-direction: column;
    justify-content: center;    
}

.freelancer {
    font-size: 24px ;
    margin-bottom: 24px;
}

.hero_text p {
    line-height: 1.5em;
    margin-bottom: 24px;
}

.button a, .button input {
    background: linear-gradient(90deg, var(--turquoise), var(--violet) 50%, var(--turquoise)) var(--x, 0) / 200% ;
    transition: 1s;
    width: 100%;
    height: 64px;
    border-radius: 32px;
    font-size: 16px;
    text-transform: uppercase;
    color: white;
    border: none;
}

.button a {
    height: 40px;
    width: 234px;
    display: block;
    border-radius: 20px;
    text-align: center;
    text-decoration: none;
    line-height: 3.6em;
    font-size: 12px;
}

.button a:hover, .button input:hover {
    --x: 100%;
}

.hero_img {
    width: calc(50% - 32px);
    display: flex;
    justify-content: center;
    align-items: flex-end;
    height: 500px;

}
.hero_img img {
    width: 100%;
    height: auto;
}

#benefits {
    padding: 64px 0;
    background: rgb(226,226,226);
    background: linear-gradient(180deg, var(--gray) 0%, rgba(255,255,255,1) 100%);
}

.benefit {
    width: calc(100% / 3 - 32px);
    margin-bottom: 64px;
}

.benefit img {
    margin-bottom: 16px;
}

.work {
    width: calc(100% / 3 - 32px);
    position: relative;
    margin-bottom: 32px;
}

.work img {
    width: 100%;
    height: auto;
}

.work::before {
    content: "";
    background: rgba(77, 121, 161, 0.7);
    width: 100%;
    height: 100%;
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
}

.work:hover::before {
    opacity: 1;
}

.links {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
}

.links:hover {
    opacity: 1;
}

.work a {
    width: 64px;
    height: 64px;
    display: block;
    border-radius: 50%;   
    margin: 0 8px; 
}

.work .fullscreen {
    background: #ffffff url('../img/fullscreen.svg') center center no-repeat;
}

.work .link {
    background: #ffffff url('../img/link.svg') center center no-repeat;
}

.work .github {
    background: #ffffff url('../img/github-link.svg') center center / 64px 64px no-repeat;
}

#rewiews {
    padding: 64px 0;
}

.rewiew {
    width: calc(100% - 32px);
}

.rewiew_img {
    width: calc(100% / 3 - 32px);
    text-align: center;
}

.rewiew_img img {
    width: 270px;
    height: auto;
    object-fit: cover;
    border-radius: 50%;
}

.rewiew_text {
    width: calc(100% / 12 * 8 - 32px);
}

#contacts  { /*# это айди, а . (точка) это класс*/
    background: var(--gray);
    padding: 64px 0;

}

.form {
    background: #ffffff;
    width: calc(100% /12 * 5 - 32px);
    text-align: center;
    padding: 40px;
    box-sizing: border-box;
}

.input_field, .text_field {
    margin-bottom: 16px;
}

.input_field input {
    width: 100%;
    height: 64px;
    padding: 0 16px ;
    box-sizing: border-box;
    box-shadow: inset 0px 3px 10px rgba(199, 199, 199, 0.25);
    border: none;
    background: var(--gray);
    border-radius: 32px;
    outline-color: #6b6b72;
}

.text_field textarea {
    width: 100%;
    height: 200px;
    padding: 16px;
    box-sizing: border-box;
    box-shadow: inset 0px 3px 10px rgba(199, 199, 199, 0.25);
    border: none;
    background: var(--gray);
    border-radius: 32px;
    resize: none;
    outline-color: #6b6b72;
}


.social_links {
    width: calc(50% - 32px);
}

.social_links a {
    color: var(--text-color);
    text-decoration: none;
}

.phone, .email {
    width: calc(50% - 32px);
    margin-bottom: 64px;
}

.social {
    width: calc(100% - 32px);
    margin-bottom: 64px;
    
}

.icons {
    width: calc(100% - 32px);
    margin-bottom: 64px;
}

.icons a {
    margin-right: 8px;
}

.policy {
    width: calc(100% - 32px);
}

.policy a {
    text-decoration: underline;
}

#policy {
    display: none;
}

#footer {
    background: linear-gradient(90deg, var(--turquoise), var(--violet) 50%, var(--turquoise)) var(--x, 0) / 200% ;
    padding: 64px 0;
    color: #ffffff;

}

.copyright {
    width: calc(100% - 32px);
    text-align: center;
}
/* от 991 до 960 */
@media screen and (max-width: 991px) {
    .hero_text {
        width: calc(100% - 32px);
        padding: 64px 0;
        text-align: center;
    }
    .button a {
        margin: 0 auto;
    }
    .hero_img {
        width: calc(100% - 32px);
        text-align: center;
    }
    .form {
        width: calc(50% - 32px); 
    }
}

/* от 959 до 768 */
@media screen and (max-width: 959px) {
    .benefit {
        width: calc(50% - 32px);
        text-align: center;
    }
    .work {
        width: calc(50% - 32px);
    }
    .rewiew_img {
        width: calc(100% - 32px);
        margin-bottom: 24px;
    }
    .rewiew_text {
        width: calc(100% - 32px);
    }
    .form {
        width: calc(100% / 12 * 10 - 32px);
        margin-bottom: 32px;
    }
    .center {
        justify-content: center;
    }
    .social_links {
        width: calc(100% / 12 * 10 - 32px);
    }
}

.mobile_menu, .mobile_button {
    display: none;
}

/* от 575 до 420 */
@media screen and (max-width: 575px) {
    .menu {
        display: none;
    }
    .mobile_button {
        display: block;
        background: rgba(0, 0, 0, 0.9) url('../img/burger.svg') center center no-repeat;
        border: none;
        width: 50px;
        height: 50px;
        position: absolute;
        right: 0;
        top: 0;
        z-index: 2;
    }
    .mobile_button.active {
        background: rgba(0, 0, 0, 0.9) url('../img/close.svg') center center no-repeat;
    }
    .mobile_menu {
        background: rgba(0, 0, 0, 0.9);
        padding: 50px;
        box-sizing: border-box;
        width: 320px;
        display: none;
        position: absolute;
        right: 0;
        top: 0;
        z-index: 1;
    }
    .mobile_menu.active {
        display: block;
    }
    .mobile_menu a {
        display: block;
        height: 50px;
        font-size: 16px;
        text-decoration: none;
        text-transform: uppercase;
        line-height: 3.4em;
        color: #ffffff;
        border-bottom: 1px solid #333333;
    }
    .benefit {
        width: calc(100% - 32px);
    }
    .work {
        width: calc(100% - 32px);
    }
    .form {
        width: calc(100% - 32px);
    }
    .social_links {
        width: calc(100% - 32px);
    }
    .phone, .email, .social, .icons {
        width: calc(100% - 32px);
        text-align: center;
    }

    .policy {
        width: calc(100% - 32px);
        text-align: center;
    }
}