body {
  font-family: "Roboto", sans-serif;
  color: #434455;
  background-color: #fff;
 }

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

 ul,ol {
    list-style-type: none;
    margin: 0;
    padding: 0;
 }

 h1, h2, h3, h4, h5, h6, p {
    margin: 0;
 }

 a {
    text-decoration: none;
 }

/* common */

 .container {
    max-width: 1158px;
    padding: 0 15px;
    margin: 0 auto;
 }

 .visually-hidden {
     position: absolute;
     width: 1px;
     height: 1px;
     margin: -1px;
     border: 0;
     padding: 0;
     white-space: nowrap;
     clip-path: inset(100%);
     clip: rect(0 0 0 0);
     overflow: hidden;
 }

/* header */

.page-header {
    border-bottom: 1px solid #e7e9fc;
    box-shadow: 0 1px 6px 0 rgba(46, 47, 66, 0.08), 0 1px 1px 0 rgba(46, 47, 66, 0.16), 0 2px 1px 0 rgba(46, 47, 66, 0.08);
}

.header-container {
    display: flex;
    align-items: center;
}

.header-nav {
    display: flex;
    align-items: center;
}

 .logo {
    font-family: "Raleway", sans-serif;
    font-weight: 700;
    font-size: 18px;
    line-height: 1.17;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    color: #4d5ae5;
 }

.header-logo {
    padding: 24px 0;
    margin-right: 76px;
}

 .header-logo .logo-part {
    color: #2e2f42;
 }

 .footer-logo .logo-part {
     color: #f4f4fd;
 }

.nav-list {
    display: flex;
    align-items: center;
    gap: 40px;
}

 .nav-link {
    position: relative;
    display: block;
    padding: 24px 0;
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #2e2f42;
    transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
 }

.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 100%;
    height: 4px;
    border-radius: 2px;
    background-color: #404bbf;
    opacity: 0;
    transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-link:hover::after,
.nav-link:focus::after,
.nav-link.current::after {
    opacity: 1;
}

 .contacts {
    font-style: normal;
    margin-left: auto;
 }

 .contacts-list {
    display: flex;
    align-items: center;
    gap: 40px;
 }

 .contacts-link {
    display: block;
    padding: 24px 0;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
    transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
 }

 .nav-link:hover,
 .nav-link:focus,
 .contacts-link:hover,
 .contacts-link:focus,
 .nav-link.current {
    color: #404bbf;
 }

.page-footer {
    background-color: #2e2f42;
    padding: 100px 0;
}

.section-hero {
    background-color: #2e2f42;
    padding: 188px 0;
    max-width: 1440px;
    margin: 0 auto;
    background-image: linear-gradient(rgba(46, 47, 66, 0.7),
        rgba(46, 47, 66, 0.7)),
        url(../images/people-office.jpg);
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;    
}

.hero-title {
    max-width: 496px;
    margin: 0 auto 48px auto;
    font-weight: 700;
    font-size: 56px;
    line-height: 1.07;
    letter-spacing: 0.02em;
    text-align: center;
    color: #fff;
}

.button-hero {
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.04em;
    color: #fff;
    background-color: #4d5ae5;
    cursor: pointer;
    display: block;
    gap: 10px;
    min-width: 169px;
    margin: 0 auto;
    padding: 16px 32px;
    border-radius: 4px;
    border: none;
    box-shadow: 0 4px 4px 0 rgba(0, 0, 0, 0.15);
    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.button-hero:hover,
.button-hero:focus {
    background-color: #404bbf;
}

.section-features {
    padding: 120px 0 120px 0;
}

.features-list {
    display: flex;
}

.features-item {
    flex-basis: calc((100% - 3 * 24px) / 4);
}

.features-item:not(:last-child) {
    margin-right: 24px;
}

.features-image {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 112px;
    margin-bottom: 8px;
    border-radius: 4px;
    background-color: #f4f4fd;
    border: 1px solid #8e8f99;
}

.features-list-item {
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: #2e2f42;
    margin-bottom: 8px;
}

.features-item-text {
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
}

.section-team {
    background-color: #f4f4fd;
    padding: 120px 0 120px 0;
}

.team-list {
    display: flex;
}

.team-title {
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    letter-spacing: 0.02em;
    text-align: center;
    color: #2e2f42;
    text-transform: capitalize;
    margin-bottom: 72px;
}

.team-list-item {
    background-color: #ffffff;
    box-shadow: 0 2px 1px 0 rgba(46, 47, 66, 0.08), 0 1px 1px 0 rgba(46, 47, 66, 0.16), 0 1px 6px 0 rgba(46, 47, 66, 0.08);
    flex-basis: calc((100% - 3 * 24px) / 4);
    border-radius: 0px 0px 4px 4px;
}

.team-list-item:not(:last-child) {
    margin-right: 24px;
}

.team-list-container {
    padding: 32px 0;
}

.team-list-name {
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    text-align: center;
    color: #2e2f42;
    margin-bottom: 8px;
}

.team-list-prof {
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    text-align: center;
    color: #434455;
    margin-bottom: 8px;
}

.social-list {
    display: flex;
    justify-content: center;
    gap: 24px;
}

.social-item {
    width: 40px;
    height: 40px;
}

.social-link {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #4d5ae5;
    transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.social-link:hover,
.social-link:focus {
    background-color: #404bbf;
}

.social-icon {
    fill: #f4f4fd;
}

.section-portfolio {
    padding: 120px 0;
}

.portfolio-title {
    font-weight: 700;
    font-size: 36px;
    line-height: 1.11;
    letter-spacing: 0.02em;
    text-align: center;
    color: #2e2f42;
    text-transform: capitalize;
    margin-bottom: 72px;
}

.portfolio-list {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 48px 24px;
}

.portfolio-list-card {
    width: calc((100% - 48px) / 3);
    transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-list-card:hover,
.portfolio-list-card:focus {
    box-shadow: 0px 1px 6px rgba(46, 47, 66, 0.08),
        0px 1px 1px rgba(46, 47, 66, 0.16),
        0px 2px 1px rgba(46, 47, 66, 0.08);
}

.portfolio-list-card:hover .overlay {
    transform: translateY(0%);
}

.portfolio-card-info {
    padding: 32px 16px;
    border: 1px solid #e7e9fc;
    border-top: none;
}

.portfolio-list-item {
    font-weight: 500;
    font-size: 20px;
    line-height: 1.2;
    letter-spacing: 0.02em;
    color: #2e2f42;
    margin-bottom: 8px;
}

.portfolio-list-product {
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #434455;
}

.overlay-wrapper {
    position: relative;
    overflow: hidden;
}

.overlay {
    position: absolute;
    top: 0;
    width: 100%;
    height: 100%;
    transform: translateY(100%);
    padding: 40px 32px;
    font-weight: 400;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #f4f4fd;
    background-color: #4d5ae5;
    transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-footer > .container {
    display: flex;
    align-items: baseline;
}

.footer-text {
    flex-basis: 264px;
    margin-right: 120px;
}

.footer-logo {
    display: inline-block;
    margin-bottom: 16px;
}

.page-footer-text {
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #f4f4fd;
    width: 264px;
}

.social-text {
    margin-bottom: 16px;
    font-weight: 500;
    font-size: 16px;
    line-height: 1.5;
    letter-spacing: 0.02em;
    color: #fff;
}

.page-footer .social-list {
    gap: 16px;
}

.page-footer .social-link:hover,
.page-footer .social-link:focus {
    background-color: #31d0aa;
}