.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;
}

body {
font-family: 'Roboto', sans-serif;
font-size: 14px;
letter-spacing: 0.03em;
background: var(--wht-text-color);
color: var(--main-text-color);
}

:root {
--main-text-color: #212121;
--accent-color: #2196F3;
--blk-text-color: #000000;
--wht-text-color: #FFFFFF;
--grey-text-color: #757575;
--contacts-color: rgba(255, 255, 255, 0.6);
--secondary-bgd: #2F303A;
--secondary-section-bgd: #F5F4FA;
--icon-grey-color: #AFB1B8;

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

/* Utilits */
ul {
  list-style: none;
  margin: 0;
  padding-left: 0px;
}
a {
  text-decoration: none;
}
h1, h2, h3, p {
  margin: 0;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Studio-page */
header {
  border-bottom: 1px solid #ECECEC;
}
.container {
  width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}
.inline {
  display: flex;
  align-items: center;
}

.navigation {
  display: flex;
}

.navigation .logo {
  padding-top: 24px;
  padding-bottom: 25px;
  margin-right: 93px;
}

.logo,
.logo-blk,
.logo-wht {
  font-family: 'Raleway';
  font-weight: 700;
  font-size: 26px;
  line-height: 1.19;
  }
.logo-blk {
  color: var(--blk-text-color);
}
.logo-wht {
  color: var(--wht-text-color);
}
.accent-color {
  color: var(--accent-color);
}
.link,
.nav,
.contact {
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: 0.02em;
  transition: color var(--transition-time) var(--cubic);
} 
.nav-contacts .list a {
  display: flex;
  align-items: center;
}
.nav {
  color: var(--main-text-color);
}
.contact {
  color: var(--grey-text-color);
}
.current {
  color: var(--accent-color);
}
.current::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: var(--accent-color);
  border-radius: 2px;
}
.link:hover,
.link:focus {
  color: var(--accent-color);
}
.nav-inline {
  display: flex;
}
.list {
  position: relative;
  display: flex;
  padding-top: 32px;
  padding-bottom: 32px;
}
.list:not(:last-child) {
  margin-right: 50px;
}
.nav-contacts {
  display: flex;
  margin-left: auto;
}
.envelope-icon {
  margin-right: 10px;
  fill: currentColor;
}
.envelope-icon:hover,
.smartphone-icon:hover {
  fill: var(--accent-color);
}
.smartphone-icon {
  width: 10px;
  height: 16px;
  margin-right: 10px;
  fill: currentColor;
}
.hero {
  background: var(--secondary-bgd);
  text-align: center;
  padding-top: 200px;
  padding-bottom: 200px;
}
.overlay {
  max-width: 1600px;
  height: 600px;
  margin: 0 auto;
  background-image: linear-gradient(
  rgba(47, 48, 58, 0.4), 
  rgba(47, 48, 58, 0.4)),
  url(../images/Img.jpg);
  background-position: center;
  background-size: cover;
}
.section {
  padding: 94px 0;
}
.hero-title {
  width: 700px;
  margin-bottom: 30px;
  margin-left: auto;
  margin-right: auto;

  font-weight: 900;
  font-size: 44px;
  line-height: 1.36;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--wht-text-color);
}
.centered {
  text-align: center;
}
.button {
  display: inline-block;
  font-family: inherit;
  font-weight: 700;
  font-size: 16px;
  line-height: 1.88;
  letter-spacing: 0.06em;
  color: var(--wht-text-color);
  background-color: var(--accent-color);

  border: 0px;
  box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
  border-radius: 4px;
  cursor: pointer;
  transition: background-color var(--transition-time) var(--cubic);
}
.hero-btn {
  padding: 10px 32px;
}

.button:hover,
.button:focus {
  background-color: #188CE8;
}

.feature-list {
  display: flex;
} 
.feature-list li:not(:last-child) {
  margin-right: 30px;
}
.feature-list li {
  width: 270px;
}
.features-bgr {
  display: flex;
  justify-content: center;
  align-items: center;
  background: var(--secondary-section-bgd);
  width: 270px;
  height: 120px;
  border-radius: 4px;
  margin-bottom: 30px;
}
.pic-list {
  display: flex;
  justify-content:space-between;
}

.pic-item {
  position: relative;
}
.pic-bgr {
  position: absolute;
  left: 0;
  bottom: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 70px;
  background: rgba(47, 48, 58, 0.8);
}

.pic-desc {
  font-weight: 700;
  text-transform: uppercase;
  color: var(--wht-text-color);
}
.works {
  padding-top: 0;
}
.section-title {
  font-size: 36px;
  line-height: 1.16;
  color: var(--main-text-color);
  margin-bottom: 50px;
}
.feature-title {
  font-size: 14px;
  line-height: 1.14;
  color: var(--main-text-color);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.feature-desc {
  line-height: 1.71;
  color: var(--grey-text-color);
}
.team-bgr {
  background: var(--secondary-section-bgd);
}
.team {
  display: flex;
  justify-content: space-between;
  text-align: center;
}
.team-item {
  background-color: var(--wht-text-color);
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.12), 0px 1px 1px rgba(0, 0, 0, 0.14), 0px 2px 1px rgba(0, 0, 0, 0.2);
  border-radius: 0px 0px 4px 4px;
}
.team-item > img {
  margin-bottom: 30px;
}
.team-item > h3 {
  margin-bottom: 10px;
}
.team-item > p {
  margin-bottom: 16px;
}

.team,
.member-name,
.position {
  font-weight: 400;
  font-size: 16px;
  line-height: 1.18;
  
}
.team .member-name {
  font-weight: 500;
  color: var(--main-text-color);
}
.position {
  color: var(--grey-text-color);
}

.social-links {
  display: flex;
  justify-content: space-between;
  margin-left: 32px;
  margin-right: 32px;
  margin-bottom: 30px;
}
.social-list-item {
  width: 44px;
  height: 44px;
  fill: var(--icon-grey-color);
  border-radius: 50%;
  transition: background-color var(--transition-time) var(--cubic);
}
.social-list-item > a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  transition: fill var(--transition-time) var(--cubic);
}
.social-list-item:hover,
.social-list-item > a:focus {
  background-color: var(--accent-color);
  fill: var(--wht-text-color);
}
.clients {
  display: flex;
  justify-content: space-between;
  fill: var(--icon-grey-color);
}
.client-list {
  width: 170px;
  height: 92px;
}
.client-link {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  border: 1px solid var(--icon-grey-color);
  border-radius: 4px;
  transition: border var(--transition-time) var(--cubic), fill var(--transition-time) var(--cubic);
}
.client-link:hover,
.client-link:focus {
  fill: var(--accent-color);
  border: 1px solid var(--accent-color);
}

.footer-bgr {
  background: var(--secondary-bgd);
  padding: 60px 0px;
}
.footer-box {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}
.address-box {
  width: 231px;
  margin-right: 70px;
}

.address-box > .logo {
  display: inline-block;
  margin-bottom: 20px;
}
.footer,
.footer-address,
.contact-link {
  font-style: normal;
  line-height: 1.71;
}
.footer .footer-address {
  color: var(--wht-text-color);
}
.footer .contact-link {
  color: var(--contacts-color);
  transition: color var(--transition-time) var(--cubic);
}
.footer-address:not(:last-child) {
  margin-bottom: 9px;
}

.contact-link:hover,
.contact-link:focus {
color: var(--accent-color);
}
.social-links-box {
  margin-right: auto;
}
.join-call {
  font-weight: 700;
  line-height: 1.14;
  color: var(--wht-text-color);
  text-transform: uppercase;
}

.footer-social-links {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
}

.footer-social-list-item {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  fill: var(--wht-text-color);
  transition: background-color var(--transition-time) var(--cubic);
}

.footer-social-list-item > a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.footer-social-list-item:hover,
.footer-social-list-item>a:focus {
  background-color: var(--accent-color);
}

.subscribe-form-box {
  display: flex;
  justify-content: flex-end;
  width: 570px;
  height: 86px;
}
.subscription-form {
  display: flex;
  justify-content: center;
  align-items: flex-end; 
}

.subscribe-input {
  width: 358px;
  height: 50px;
  margin-top: 20px;
  margin-right: 12px;
  padding: 15px;
  background-color: inherit;
  border: 1px solid rgba(255, 255, 255, 0.3);
  filter: drop-shadow (0px 4px 4px rgba(0, 0, 0, 0.15));
  border-radius: 4px;
  color: var(--wht-text-color);
}

.subscribe-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.subscribe-btn {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px 29px;
}

.icon-send {
  margin-left: 10px;
}

/* Modal-window */
.backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
  opacity: 1;
  transition: opacity var(--transition-time) var(--cubic);
}

/* .backdrop.is-hidden {
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
} */

.backdrop.is-hidden .modal {
  transform: translate(-50%, -50%) scale(0.8);
}
.modal {
  position: absolute;
  left: 50%;
  top: 50%;
  min-width: 528px;
  min-height: 581px;
  padding: 40px;
  background: var(--wht-text-color);
  border-radius: 4px;
  box-shadow: 0px 1px 3px rgba(0, 0, 0, 0.12), 0px 1px 1px rgba(0, 0, 0, 0.14), 0px 2px 1px rgba(0, 0, 0, 0.2);

  transform: translate(-50%, -50%) scale(1);
  transition: transform 500ms var(--cubic);
}

.modal-btn-close {
  position: absolute;
  top: 8px;
  right: 8px;

  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0;  
  width: 30px;
  height: 30px;
  background: var(--wht-text-color);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  cursor: pointer;
  transition: fill var(--transition-time) var(--cubic);
}

.modal-btn-close:hover,
.modal-btn-close:focus {
  fill: var(--accent-color);
}

.modal-title {
  margin-bottom: 12px;
  font-weight: 700;
  font-size: 20px;
  line-height: 1.15;
  text-align: center;
  color: var(--main-text-color);
}

.form-label {
  position: relative;
  display: block;
  width: 450px;
  margin-bottom: 10px;  
  font-size: 12px;
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--grey-text-color);
}

.form-input {
  width: 100%;
  margin-top: 4px;  
  padding: 11px;
  padding-left: 42px;
  border: 1px solid rgba(33, 33, 33, 0.2);
  border-radius: 4px;
  transition: border-color var(--transition-time) var(--cubic);
}

.form-icon {
  position: absolute;
  bottom: 11px;
  left: 12px;
  transition: fill var(--transition-time) var(--cubic);  
}

.form-label:hover,
.form-input:hover,
.form-input:focus,
.form-icon:hover {
  fill: var(--accent-color);
  border-color: var(--accent-color);
}

.form-input:focus + .form-icon {
  fill: var(--accent-color);
}

.comment-field {
  margin-bottom: 20px;
}

.comment-input {
  resize: none;
  width: 100%;
  height: 120px;
  padding: 12px 16px;
  font-size: 12px;
  line-height: 1.16;
  letter-spacing: 0.01em;
  color: var(--main-text-color);
}

.comment-input::placeholder {
  color: rgba(117, 117, 117, 0.5);
}

.check {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 30px;
  line-height: 1.71;
}

.check-box {
  position: absolute;
  width: 16px;
  height: 15px;
  top: 4px;
  left: 14px;
  background-image: url(../images/icon-unchecked.svg); 
}

.check-input {
  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;
}

.check-input:focus-visible + .check-box {
  background-image: url(../images/icon-unchecked-focused.svg);
}

.check-input:checked:focus + .check-box {
  background-image: url(../images/icon-check.svg);
}

.agreement {
  margin-left: 23px;
  color: var(--grey-text-color);
}

.agreement-link {
  color: var(--accent-color);
  text-decoration: underline;
}

.send-btn {
  display: block;
  margin: 0 auto;
  padding: 10px 56px;
}

/* Portfolio-page */
.filtr {
  display: flex;
  justify-content: center;
  margin-bottom: 50px;
}
.filtr li:not(:last-child) {
  margin-right: 8px;
}
.button-filtr {
  font-family: inherit;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.62;
  text-align: center;
  letter-spacing: 0.03em;
  color: var(--main-text-color);
  background: var(--secondary-section-bgd);
  border: 0px;
  border-radius: 4px;
  padding: 6px 22px;
  cursor: pointer;
  transition: color var(--transition-time) var(--cubic),background-color var(--transition-time) var(--cubic), box-shadow var(--transition-time) var(--cubic);
  
}
.button-filtr:hover,
.button-filtr:focus {
  color: var(--wht-text-color);
  background-color: var(--accent-color);
  box-shadow: 0px 3px 1px rgba(0, 0, 0, 0.1), 0px 1px 2px rgba(0, 0, 0, 0.08), 0px 2px 2px rgba(0, 0, 0, 0.12);
}

.portfolio {
  display: flex;
  flex-wrap: wrap;
}
.portfolio-item {
  width: calc((100% - 60px) / 3);
  margin-right: 30px;
  margin-bottom: 30px; 
  background: var(--wht-text-color);
}
.portfolio-item:nth-child(3n) {
  margin-right: 0;
}
.portfolio-item:nth-last-child(-n + 3) {
  margin-bottom: 0;
}
.portfolio-link {
  display: block;
  transition: box-shadow var(--transition-time) var(--cubic);
}
.portfolio-link:hover,
.portfolio-link:focus {
box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.12), 0px 4px 4px rgba(0, 0, 0, 0.06), 1px 4px 6px rgba(0, 0, 0, 0.16);
}
.portfolio-link:hover .desc-overlay,
.portfolio-link:focus .desc-overlay {
  transform: translateY(0);
}

.portfolio-item-overlay {
  position: relative;
  overflow: hidden;
}
.desc-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 63px 24px;
  
  font-style: inherit;
  font-size: 18px;
  line-height: 1.56;
  color: var(--wht-text-color);
  background: rgba(33, 150, 243, 0.9);

  transform: translateY(100%);
  transition: transform var(--transition-time) var(--cubic);
}

.card-description {
  padding: 20px 24px;
  border-right: 1px solid #EEEEEE;
  border-bottom: 1px solid #EEEEEE;
  border-left: 1px solid #EEEEEE;
}

.link-title {
  font-size: 18px;
  line-height: 2;
  letter-spacing: 0.06em;
  color: var(--main-text-color);
  margin-bottom: 4px;
  }
.link-desc {
  font-size: 16px;
  line-height: 1.88;
  color: var(--grey-text-color);
}