* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: "Roboto", sans-serif;
  color: #434455;
  background-color: #fff;
}
h1,
h2,
h3 {
  margin: 0;
  padding: 0;
}

img {
  display: block;
}
.container {
  width: 1158px;
  margin: 0 auto;
  padding-left: 15px;
  padding-right: 15px;
}
ul,
ol {
  list-style-type: none;
}

a {
  text-decoration: none;
}

.page-header {
  border: 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);
}

.page-header-nav {
  display: flex;
}
.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;
  margin-right: 76px;
}

.logo-part {
  color: #2e2f42;
}
.header-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  gap: 40px;
}
.nav-list-link.current {
  color: #404bbf;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-list-link::after {
  content: "";
  width: 100%;
  height: 4px;
  position: absolute;
  left: 0;
  bottom: -1px;
  background-color: #404bbf;
  border-radius: 2px;
  opacity: 0;
  transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-list-link:hover:after,
.nav-list-link:focus:after,
.nav-list-link.current::after {
  opacity: 1;
}
.nav-list-link {
  font-family: "Roboto", sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #2e2f42;
  display: block;
  padding-top: 24px;
  padding-bottom: 24px;
  position: relative;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.page-address {
  font-style: normal;
  margin-left: auto;
}
.address-list {
  display: flex;
  align-items: center;
  gap: 40px;
}

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

.nav-list-link:hover,
.nav-list-link:focus,
.address-list-item-link:hover,
.address-list-item-link:focus {
  color: #404bbf;
}

/* effective silotions */
.effective {
  background-color: #2e2f42;
  padding: 188px 0;
  max-width: 1440px;
  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;
  margin: 0 auto;
}

.effective-title {
  font-weight: 700;
  font-size: 56px;
  line-height: 1.07;
  letter-spacing: 0.02em;
  text-align: center;
  color: #fff;
  max-width: 496px;
  margin: 0 auto 48px;
}
.effective-button {
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: #fff;
  background-color: #4d5ae5;
  cursor: pointer;
  display: block;
  min-width: 169px;
  height: 56px;
  margin: 0 auto;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.effective-button:hover,
.effective-button:focus {
  background-color: #404bbf;
}

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

/* strategies */

.strategies {
  padding: 120px 0;
}
.strategies-list {
  display: flex;
  gap: 24px;
  justify-content: center;
}
.strategies-icon {
  width: 100%;
  height: 112px;
  border: 1px solid #8e8f99;
  border-radius: 4px;
  background: #f4f4fd;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.strategies-icon svg {
  margin: 0 auto;
}
.strategies-list-item {
  width: calc((100% – 72px) / 4);
}
.strategies-title-thrid {
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: #2e2f42;
  margin-bottom: 8px;
}

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

/* team */

.team {
  background: #f4f4fd;
  color: #2e2f42;
  padding: 120px 0;
}

.team-title {
  font-weight: 700;
  font-size: 36px;
  line-height: 1.11;
  letter-spacing: 0.02em;
  text-align: center;
  text-transform: capitalize;
  margin-bottom: 72px;
}
.team-list {
  display: flex;
  gap: 24px;
}
.team-list-item {
  background-color: #fff;
  border-radius: 0px 0px 4px 4px;
  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);
}
.team-list-title {
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
  margin-bottom: 8px;
}
.team-list-text {
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  text-align: center;
  color: #434455;
  margin-bottom: 8px;
}

/* .workers {
} */

.workers {
  padding: 32px 0;
}
.workers-list {
  display: flex;
  gap: 24px;
  justify-content: center;
}
.workers-list-items {
  width: calc((100%-72px) / 4);
  width: 40px;
  height: 40px;
}
.workers-list-link {
  height: 100%;
  width: 100%;
  background-color: #4d5ae5;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.workers ul li a:hover,
.workers ul li a:focus {
  background-color: #404bbf;
}

.workers ul li svg {
  fill: #f4f4fd;
  margin: 0 auto;
  width: 16px;
  height: 16px;
  display: block;
}

/* portfolio */

.portfolio {
  padding: 120px 0;
}
.portfolio-title {
  font-weight: 700;
  font-size: 36px;
  line-height: 1.11;
  letter-spacing: 0.02em;
  text-align: center;
  text-transform: capitalize;
  color: #2e2f42;
  margin-bottom: 72px;
}
.portfolio-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  row-gap: 48px;
}
.portfolio-list-up {
  width: 360px;
  flex: 0 0 calc((100% - 48px) / 3);
  transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

.portfolio-text-hover {
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #f4f4fd;
  position: absolute;
  top: 0;
  left: 0;
  background-color: #4d5ae5;
  width: 100%;
  height: 300px;
  padding: 40px 32px;
  transform: translateY(100%);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-list-up:hover .portfolio-text-hover {
  transform: translateY(0);
}
/* .app:hover {
  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);
} */
.portfolio-img-tumba {
  position: relative;
  overflow: hidden;
}

/* footer */

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

.logo-footer {
  color: #f4f4fd;
}
.logo-text {
  display: inline-block;
  margin-bottom: 16px;
}
.page-footer-text {
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #f4f4fd;
}

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

.footer-logo {
  margin-right: 120px;
}
.footer-social .footer-social-text {
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #fff;
  margin-bottom: 16px;
}

.footer-social .footer-social-list {
  display: flex;
  gap: 16px;
}
.footer-social-link {
  width: 40px;
  height: 40px;
  background-color: #4d5ae5;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
}
.footer-social-link:hover,
.footer-social-link:focus {
  background-color: #31d0aa;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.svg-footer,
.workers-list-svg {
  fill: #f4f4fd;
}