body {
  font-family: 'Roboto', sans-serif;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #434455;
  background-color: #fff;
}

:root {
  --clr-cloud: #f4f4fd;
}

/* 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 {
  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.current {
  position: relative;
}

.nav-link.current::after {
  content: '';

  position: absolute;
  left: 0;
  bottom: -1px;

  width: 100%;
  height: 4px;
  border-radius: 2px;

  background-color: #404bbf;
}

.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;
}

/* main */

.hero {
  max-width: 1440px;
  margin: 0 auto;
  padding: 188px 0;
  color: #ffffff;
  text-align: center;
  background-image:
    linear-gradient(rgba(46, 47, 66, 0.7), rgba(46, 47, 66, 0.7)),
    url(../images/hero-1.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

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

.section {
  padding: 120px 0;
}

.btn {
  display: block;
  min-width: 169px;
  padding: 16px 32px;
  margin: 0 auto;
  font-family: 'Roboto', sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: #ffffff;
  background-color: #4d5ae5;
  border: 0;
  box-shadow: 0px 4px 4px 0px #00000026;
  border-radius: 4px;
  cursor: pointer;

  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

.section-title {
  margin: 0 0 72px;
  font-weight: 700;
  font-size: 36px;
  line-height: 1.11;
  letter-spacing: 0.02em;
  text-align: center;
  text-transform: capitalize;
  color: #2e2f42;
}

.item-title {
  margin: 0 0 8px;
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #2e2f42;
}

.benefits-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.benefits-list__item {
  flex-basis: calc((100% - 72px) / 4);
}

.benefits-list__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 0 8px;
  height: 112px;
  border-radius: 4px;
  background: #f4f4fd;
  border: 1px solid #8e8f99;
}

.team-section {
  background-color: #f4f4fd;
}

.team-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.team-list__item {
  flex-basis: calc((100% - 72px) / 4);
  border-bottom-right-radius: 4px;
  border-bottom-left-radius: 4px;
  background-color: #ffffff;
  box-shadow:
    0px 2px 1px 0px #2e2f4214,
    0px 1px 1px 0px #2e2f4229,
    0px 1px 6px 0px #2e2f4214;
}

.team-list__item:hover {
}

.team-list__pic {
  display: block;
}

.team-list__content {
  padding: 32px 0;
  text-align: center;
}

.team-list__pos {
  margin: 0 0 8px;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin: 0 16px;
  flex-wrap: wrap;
}

.social-links __item {
}

.social-links__link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #4d5ae5;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

.social-links__icon {
  fill: var(--clr-cloud);
  color: var(--clr-cloud);
}

.footer .social-links {
  gap: 16px;
  margin: 0;
}

.footer .social-links__link:hover,
.footer .social-links__link:focus {
  background: #31d0aa;
}

.portfolio-list {
  display: flex;
  flex-wrap: wrap;
  gap: 48px 24px;
}

.portfolio-list__item {
  flex-basis: calc((100% - 48px) / 3);
  background-color: #ffffff;

  transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-list__item:hover {
  box-shadow:
    0px 2px 1px 0px #2e2f4214,
    0px 1px 1px 0px #2e2f4229,
    0px 1px 6px 0px #2e2f4214;
}

.portfolio-list__item:hover .portfolio-list__overlay {
  transform: translateY(0%);
}

.portfolio-list__content {
  padding: 32px 16px;
  border-style: solid;
  border-color: #e7e9fc;
  border-width: 1px;
  border-top: none;
}

.portfolio-list__photo {
  position: relative;
  overflow: hidden;
}

.portfolio-list__pic {
  display: block;
}

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

/* footer */

.footer {
  padding: 100px 0;
  color: #f4f4fd;
  background-color: #2e2f42;
}

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

.footer__col-logo {
  margin-right: 120px;
}

.footer-title {
  margin: 0 0 16px;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #ffffff;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 16px;
  font-family: 'Raleway', sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.17;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  text-decoration: none;
  color: #4d5ae5;
}

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

.footer-descr {
  max-width: 264px;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
}