:root {
  --iris: #4d5ae5;
  --ocean: #404bbf;
  --cloud: #f4f4fd;
  --white: #ffffff;
  --footer-social-hover: #31d0aa;
}

* {
  box-sizing: border-box;
}

body {
  font-family: "Roboto", sans-serif;
  color: #434455;
  background-color: var(--white);
  margin: 0;
}

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

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

/* Container */
.container {
  max-width: 1158px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 15px;
  padding-right: 15px;
}

/* ===== HEADER ===== */
.header-main {
  border-bottom: 1px solid #e7e9fc;
  background-color: #fff;
  box-shadow: 0px 2px 1px rgba(46, 47, 66, 0.08),
    0px 1px 1px rgba(46, 47, 66, 0.16), 0px 1px 6px rgba(46, 47, 66, 0.08);
}
.header-main .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo,
.logo-header,
.logo-footer {
  font-family: "Raleway", sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.17;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--iris);
  text-decoration: none;
  display: inline-block;
}
.logo-main {
  margin-right: 76px;
}
.logo-span {
  color: #2e2f42;
}
.logo-span-footer {
  color: var(--cloud);
}

/* Навигация */
.nav-main {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  gap: 40px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav-link {
  color: #2e2f42;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  text-decoration: none;
  padding: 24px 0;
  display: inline-block;
  position: relative;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-link:hover,
.nav-link:focus {
  color: var(--ocean);
}
.nav-link--current {
  color: var(--ocean);
  position: relative;
}
.nav-link--current::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 4px;
  border-radius: 2px;
  background-color: var(--ocean);
  width: 100%;
}

/* Адрес */
.address-main {
  font-style: normal;
}
.address-list {
  display: flex;
  gap: 40px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.address-link {
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #434455;
  text-decoration: none;
  transition: color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.address-link:hover,
.address-link:focus {
  color: var(--ocean);
}

/* ===== HERO ===== */
.section-hero {
  background-repeat: no-repeat;
  background-image: linear-gradient(
      rgba(46, 47, 66, 0.7),
      rgba(46, 47, 66, 0.7)
    ),
    url("../images/hero-bg.jpg");
  background-size: cover;
  background-position: center;
  max-width: 1440px;
  margin: 0 auto;
  text-align: center;
  padding: 188px 0;
}
.hero-title {
  color: #ffffff;
  font-size: 56px;
  font-weight: 700;
  line-height: 1.07;
  letter-spacing: 0.02em;
  margin-bottom: 48px;
  max-width: 496px;
  margin-left: auto;
  margin-right: auto;
}
.hero-btn {
  background-color: var(--iris);
  color: #ffffff;
  font-family: "Roboto", sans-serif;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  border: none;
  border-radius: 4px;
  padding: 16px 32px;
  cursor: pointer;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0px 4px 4px rgba(46, 47, 66, 0.08);
  display: block;
  min-width: 169px;
  margin-left: auto;
  margin-right: auto;
}
.hero-btn:hover,
.hero-btn:focus {
  background-color: var(--ocean);
}

/* ===== ADVANTAGES ===== */
.section-adv,
.section-team,
.section-portfolio {
  padding: 120px 0;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.11;
  text-align: center;
  letter-spacing: 0.02em;
  text-transform: capitalize;
  color: #2e2f42;
  margin-bottom: 72px;
}
.adv-list {
  display: flex;
  gap: 24px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.adv-item {
  flex: 0 0 calc((100% - 72px) / 4);
}
.adv-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 112px;
  background: var(--cloud);
  border-radius: 4px;
  border: 1px solid #8e8f99;
  margin-bottom: 8px;
}
.adv-icon svg {
  fill: var(--iris);
  width: 64px;
  height: 64px;
}

.adv-subtitle {
  margin-bottom: 8px;
}
.adv-text {
  font-size: 14px;
  line-height: 1.5;
}

/* ===== TEAM ===== */
.section-team {
  background-color: var(--cloud);
}
.team-list {
  display: flex;
  gap: 24px;
  justify-content: center;
  list-style: none;
  padding: 0;
  margin: 0;
}
.team-item {
  flex-basis: calc((100% - 72px) / 4);
  border-radius: 0 0 4px 4px;
  background-color: #fff;
  box-shadow: 0px 2px 1px rgba(46, 47, 66, 0.08),
    0px 1px 1px rgba(46, 47, 66, 0.16), 0px 1px 6px rgba(46, 47, 66, 0.08);
  text-align: center;
}
.team-img {
  width: 100%;
  border-radius: 4px 4px 0 0;
  display: block;
}
.team-info {
  padding: 32px 0;
}
.team-name {
  font-size: 20px;
  font-weight: 500;
  color: #2e2f42;
  margin-bottom: 8px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  text-align: center;
}
.team-job {
  font-size: 16px;
  color: #434455;
  line-height: 1.5;
  letter-spacing: 0.02em;
  text-align: center;
}
.team-social-list {
  display: flex;
  gap: 24px;
  list-style: none;
  justify-content: center;
  padding: 0;
  margin: 16px 0 0 0;
}
.team-social-item {
  width: 40px;
  height: 40px;
}
.team-social-link {
  background-color: var(--iris);
  width: 100%;
  height: 100%;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.team-social-link svg {
  fill: var(--cloud);
  width: 16px;
  height: 16px;
}
.team-social-link:hover,
.team-social-link:focus {
  background-color: var(--ocean);
}
.team-social-link:hover svg,
.team-social-link:focus svg {
  fill: #fff;
}

/* ===== PORTFOLIO ===== */
.portfolio-list {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  row-gap: 48px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.portfolio-item {
  flex-basis: calc((100% - 48px) / 3);
  background-color: #fff;
  flex-direction: column;
  align-items: center;
  transition: box-shadow 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.portfolio-item:hover,
.portfolio-item:focus-within {
  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-thumb {
  position: relative;
  overflow: hidden;
}
.portfolio-img {
  display: block;
  width: 100%;
  height: auto;
}
.portfolio-overlay-text {
  position: absolute;
  top: 0;
  left: 0;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--cloud);
  padding: 40px 32px;
  background-color: var(--iris);
  height: 100%;
  width: 100%;
  transform: translateY(100%);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
}
.portfolio-item:hover .portfolio-overlay-text,
.portfolio-item:focus-within .portfolio-overlay-text {
  transform: translateY(0);
}
.portfolio-info {
  padding: 32px 16px;
  border: 1px solid #e7e9fc;
  border-top: none;
}
.portfolio-name {
  font-size: 20px;
  font-weight: 500;
  color: #2e2f42;
  margin-bottom: 8px;
  line-height: 1.2;
  letter-spacing: 0.02em;
}
.portfolio-text {
  font-size: 16px;
  color: #434455;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

/* ===== FOOTER ===== */
.footer-main {
  background-color: #2e2f42;
  color: #ffffff;
  padding: 100px 0;
}
.footer-container {
  display: flex;
  align-items: baseline;
}
.footer-logo-wrap {
  margin-right: 120px;
}
.logo-footer {
  margin-bottom: 16px;
}
.footer-text {
  max-width: 264px;
  margin-bottom: 16px;
  color: var(--cloud);
  line-height: 1.5;
  letter-spacing: 0.02em;
}
.footer-socials-wrap {
  /* отдельный класс для контейнера соцсетей */
}
.footer-socials-title {
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-social-list {
  display: flex;
  gap: 16px;
  list-style: none;
  justify-content: flex-start;
  padding: 0;
  margin: 0;
}
.footer-social-item {
  width: 40px;
  height: 40px;
}
.footer-social-link {
  width: 100%;
  height: 100%;
  background-color: var(--iris);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.footer-social-link svg {
  fill: var(--cloud);
  width: 24px;
  height: 24px;
}
.footer-social-link:hover,
.footer-social-link:focus {
  background-color: var(--footer-social-hover);
}
.footer-social-link:hover svg,
.footer-social-link:focus svg {
  fill: #fff;
}

/* Visually hidden */
.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;
}
.subscribe-label {
  display: contents;
}

/* ===== SUBSCRIBE (footer) ===== */
.footer-container {
  gap: 72px;
}
.footer-subscribe {
  margin-left: auto;
  max-width: 453px;
}
.subscribe-form {
  display: flex;
  gap: 24px;
}
.subscribe-input {
  width: 264px;
  height: 40px;
  border: 1px solid #ffffff;
  background-color: transparent;
  color: #ffffff;
  border-radius: 4px;
  padding: 8px 16px;
  font-size: 12px;
  line-height: 2;
  letter-spacing: 0.04em;
  outline: none;
  transition: border-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
  padding-left: 16px;
  box-shadow: 0px 4px 4px rgba(0, 0, 0, 0.15);
}
.subscribe-input::placeholder {
  color: rgba(255, 255, 255, 0.6);
  color: #ffffff;
}
.subscribe-input:focus {
  border-color: var(--iris);
}
.subscribe-btn {
  min-width: 165px;
  height: 40px;
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: "Roboto", sans-serif;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: #ffffff;
  cursor: pointer;
  background-color: #4d5ae5;
  border: none;
  border-radius: 4px;
}
.subscribe-btn:hover,
.subscribe-btn:focus {
  background-color: var(--ocean);
}
.subscribe-icon {
  fill: var(--white);
  margin-left: 16px;
}

/* ===== BACKDROP/MODAL ===== */
.backdrop {
  position: fixed;
  inset: 0;
  background: rgba(46, 47, 66, 0.4);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 250ms cubic-bezier(0.4, 0, 0.2, 1),
    visibility 250ms cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 999;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.backdrop.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}
.modal {
  position: absolute;
  width: 408px;
  max-width: 100%;
  background-color: #fcfcfc;
  border-radius: 4px;
  box-shadow: 0px 1px 1px rgba(0, 0, 0, 0.14), 0px 1px 3px rgba(0, 0, 0, 0.12),
    0px 2px 1px rgba(0, 0, 0, 0.2);
  padding: 72px 24px 24px;
  top: 50%;
  left: 50%;
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
  transform: translate(-50%, -50%);
  min-height: 584px;
}
.modal-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(0, 0, 0, 0.1);
  padding: 0;
  border-radius: 50%;
  background: #e7e9fc;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1),
    border 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.modal-close:hover,
.modal-close:focus {
  background-color: #404bbf;
  border-color: var(--ocean);
  border: none;
}
.modal-close svg {
  fill: #2e2f42;
  transition: fill 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-title {
  margin-bottom: 16px;
  text-align: center;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: #2e2f42;
}

.modal-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.form-field {
  margin-bottom: 8px;
}

.comment-field {
  margin-bottom: 16px;
}

.form-label {
  display: block;
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: #8e8f99;
  line-height: 1.17;
}
.input-wrapper {
  position: relative;
}
.form-input {
  width: 100%;
  height: 40px;
  border-radius: 4px;
  border: 1px solid rgba(46, 47, 66, 0.4);
  outline: transparent;
  padding: 8px 16px 8px 38px;
  transition: border-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
  background-color: transparent;
  line-height: 1.17;
}
.form-input::placeholder {
  color: rgba(46, 47, 66, 0.4);
}
.form-input:focus {
  border-color: var(--iris);
}
.form-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  fill: #2e2f42;
  pointer-events: none;
  transition: fill 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.form-input:focus + .form-icon {
  fill: var(--iris);
}

.form-textarea {
  width: 100%;
  height: 120px;
  font-size: 12px;
  line-height: 1.17;
  letter-spacing: 0.04em;
  color: rgba(46, 47, 66, 0.4);
  border: 1px solid rgba(46, 47, 66, 0.4);
  border-radius: 4px;
  padding: 8px 16px;
  resize: none;
  outline: transparent;
  transition: border-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
  background-color: transparent;
}
.form-textarea::placeholder {
  color: rgba(46, 47, 66, 0.4);
}
.form-textarea:focus {
  border-color: var(--iris);
}

.form-agreement {
  margin-top: 8px;
  margin-bottom: 24px;
}
.agree-label {
  align-items: center;
  gap: 8px;
  font-size: 12px;
  line-height: 1.17;
  letter-spacing: 0.04em;
  color: #8e8f99;
  user-select: none;
}
.custom-checkbox {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border: 1px solid rgba(46, 47, 66, 0.4);
  border-radius: 2px;
  background-color: #fff;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1),
              border 250ms cubic-bezier(0.4, 0, 0.2, 1),
              fill 250ms cubic-bezier(0.4, 0, 0.2, 1);
  fill: transparent;
}
.check-icon {
  opacity: 0;
  fill: #fff;
  transition: fill 250ms cubic-bezier(0.4, 0, 0.2, 1);
}
.agree-checkbox:checked + .agree-label > .custom-checkbox {
  background-color: #404bbf;
  border-color: var(--ocean);
  border: none;
  fill: var(--cloud);
}
.agree-checkbox:checked + .agree-label > .custom-checkbox .check-icon {
  opacity: 1;
  fill: #f4f4fd;
}

.policy-link {
  color: var(--iris);
  text-decoration: underline;
}
.modal-submit {
  align-self: center;
  min-width: 169px;
  border: none;
  border-radius: 4px;
  padding: 16px 32px;
  background-color: var(--iris);
  color: #fff;
  font-weight: 500;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
  display: block;
  height: 56px;
  line-height: 1.5;
}
.modal-submit:hover,
.modal-submit:focus {
  background-color: var(--ocean);
}

.subscribe-btn svg {
  margin-left: 16px;
}

.modal-close:hover svg,
.modal-close:focus svg {
  fill: #ffffff;
}