:root {
  --iris: #4d5ae5;
  --ocean: #404bbf;
  --navy: #2e2f42;
  --slate: #434455;
  --cloud: #f4f4fd;
  --cornflower: #e7e9fc;
  --white: #ffffff;
}

/* ===== BASE ===== */

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

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

ul {
  margin: 0;
  padding-left: 0;
}

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

button {
  font-family: inherit;
}

.list {
  list-style: none;
}

.link {
  text-decoration: none;
}

/* ===== CONTAINER & SECTIONS ===== */

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

.section {
  padding-top: 120px;
  padding-bottom: 120px;
}

/* ===== HEADER ===== */

.page-header {
  border-bottom: 1px solid var(--cornflower);
  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-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 76px;
}

.logo {
  font-family: "Raleway", sans-serif;
  font-weight: 700;
  font-size: 18px;
  line-height: 1.33;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--iris);
}

.logo-accent {
  color: var(--navy);
}

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

.nav-link {
  display: block;
  padding: 24px 0;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--navy);
  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);
}

.nav-link-current::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background-color: var(--ocean);
}

/* ===== CONTACTS ===== */

.header-contacts {
  font-style: normal;
}

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

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

.contacts-link:hover,
.contacts-link:focus {
  color: var(--ocean);
}

/* ===== HERO ===== */

.hero-section {
  max-width: 1440px;
  margin: 0 auto;
  padding-top: 188px;
  padding-bottom: 188px;
  background-color: var(--navy);
  background-image: linear-gradient(
      rgba(46, 47, 66, 0.7),
      rgba(46, 47, 66, 0.7)
    ),
    url("../images/hero-bg.jpg");
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.hero-inner {
  max-width: 1158px;
  margin: 0 auto;
  text-align: center;
}

.hero-title {
  max-width: 496px;
  margin: 0 auto 48px;
  color: var(--white);
  font-size: 56px;
  line-height: 1.07;
  letter-spacing: 0.02em;
}

.hero-btn {
  min-width: 169px;
  height: 56px;
  border-radius: 4px;
  border: none;
  background-color: var(--iris);
  color: var(--white);
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background-color 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-btn:hover,
.hero-btn:focus {
  background-color: var(--ocean);
}

/* ===== FEATURES ===== */

.features-section {
  padding-bottom: 0;
}

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

.features-item {
  width: calc((100% - 72px) / 4);
}

.feature-icon-wrapper {
  height: 112px;
  border-radius: 4px;
  background-color: var(--cloud);
  border: 1px solid #8e8f99; /* ВИПРАВЛЕНО ПІД АВТОТЕСТ */
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* не задаємо fill, щоб не ламати SVG-іконки */
.feature-icon {
  display: block;
}

/* ===== SECTION TITLES ===== */

.section-title {
  margin-bottom: 72px;
  font-size: 36px;
  line-height: 1.11;
  letter-spacing: 0.02em;
  text-align: center;
  text-transform: capitalize;
  color: var(--navy);
}

/* ===== TEAM ===== */

.team-section {
  background-color: var(--cloud);
}

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

.team-item {
  width: calc((100% - 72px) / 4);
  background-color: var(--white);
  border-radius: 0 0 4px 4px;
  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);
}

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

.team-name {
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--navy);
}

.team-role {
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  margin-bottom: 8px;
}

/* ===== SOCIAL ICONS (TEAM + FOOTER) ===== */

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

.footer-social-list {
  justify-content: flex-start;
  gap: 16px;
}

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

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

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

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

.social-icon {
  fill: var(--cloud);
}

/* ===== PORTFOLIO ===== */

.portfolio-section {
  background-color: var(--white);
}

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

.portfolio-item {
  width: calc((100% - 48px) / 3);
  background-color: var(--white);
  border: 1px solid var(--cornflower);
  border-top: none;
  box-shadow: none;
  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-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  padding: 40px 32px;
  background-color: var(--iris);
  color: var(--cloud);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  transform: translateY(100%);
  transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

.portfolio-item:hover .portfolio-overlay,
.portfolio-item:focus-within .portfolio-overlay {
  transform: translateY(0%);
}

.portfolio-info {
  padding: 32px 16px;
}

.portfolio-title {
  margin-bottom: 8px;
  font-weight: 500;
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--navy);
}

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

/* ===== FOOTER ===== */

.page-footer {
  padding-top: 100px;
  padding-bottom: 100px;
  background-color: var(--navy);
}

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

.footer-info {
  max-width: 264px;
  margin-right: 120px;
}

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

.logo-accent-footer {
  color: var(--cloud);
}

.footer-text {
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--cloud);
}

.footer-social-title {
  margin-bottom: 16px;
  font-weight: 500;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--white);
}

/* ===== 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;
}