:root {
  /* colors */
  --main-txt-cl: rgba(0, 0, 0, 0.8);
  --title-txt-cl: #000000;
  --white-cl: #ffffff;
  --accent-cl: #18a0fb;
  --grey-bg-cl: #f5f5f5;

  /* fonts */
  --main-font: 'Montserrat', sans-serif;
  --secondary-font: 'Comfortaa', sans-serif;
}

body {
  font-family: var(--main-font);
  line-height: 1.2;
}

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

ul {
  padding: 0;
  list-style: none;
}

a {
  text-decoration: none;
  color: currentColor;
}

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

.container {
  width: 1260px;
  padding-left: 20px;
  padding-right: 20px;
  margin-left: auto;
  margin-right: auto;
}

/* Modal */
.no-scroll {
  overflow: hidden;
}

.backdrop {
  position: fixed;
  top: 0;
  left: 0;

  width: 100%;
  height: 100%;

  background-color: rgba(204, 204, 204, 0.5);

  opacity: 0;
  pointer-events: none;

  transition: opacity 250ms ease-in;
}

.backdrop.is-open {
  opacity: 1;
  pointer-events: initial;
}

.modal {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 600px;
  /* height: 400px; */
  padding: 20px;

  background-color: #ffffff;
  border-radius: 10px;

  transform: translate(-50%, -50%) scale(0.3);
  transition: transform 300ms linear;
}

.backdrop.is-open .modal {
  transform: translate(-50%, -50%) scale(1);
}

.modal-text {
  margin-bottom: 30px;
}

.form {
  margin-right: auto;
  margin-left: auto;
  width: 400px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
  text-align: left;
}

.form-field input {
  padding: 5px 10px;
}

.form-gorup {
  margin-bottom: 20px;
}

.group-title {
  font-size: 20px;
  font-weight: 500;
  text-align: left;
}

/* Header */
.header-nav {
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-right: 71px;

  font-size: 28px;
  font-family: var(--secondary-font);
  color: var(--title-txt-cl);
}

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

.nav-link {
  display: block;
  padding-top: 21px;
  padding-bottom: 21px;
  font-size: 15px;
  font-weight: 500;
  color: var(--accent-cl);
}

.btn-list {
  display: flex;
  margin-left: auto;
  gap: 12px;
}

.btn {
  display: inline-block;
  padding-top: 11px;
  padding-bottom: 11px;
  width: 130px;
  height: 40px;
  background-color: var(--white-cl);
  border-radius: 6px;
  border: 1px solid var(--accent-cl);

  font-size: 15px;
  font-weight: 500;
  text-align: center;

  cursor: pointer;
  transition: all 250ms ease-in;
}

.btn-primary {
  color: var(--accent-cl);
}

.btn-primary:hover,
.btn-primary:focus {
  color: var(--white-cl);
  background-color: var(--accent-cl);
}

.btn-secondary {
  background-color: var(--accent-cl);
  color: var(--white-cl);
}

/* Hero */
.hero {
  text-align: center;
}

.hero-title {
  margin-bottom: 40px;

  font-size: 56px;
  line-height: calc(80 / 56);
  font-weight: 400;
  color: var(--title-txt-cl);
}

.hero-btn {
  display: inline-block;
  padding-top: 15px;
  padding-bottom: 15px;
  width: 192px;
  height: 52px;
  background-color: var(--accent-cl);
  border-radius: 6px;

  font-size: 17px;
  font-weight: 500;
  color: var(--white-cl);
  text-align: center;
}

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

.title {
  margin-bottom: 60px;
  font-size: 48px;
  line-height: calc(72 / 48);
  font-weight: 400;
  color: var(--title-txt-cl);
}

.benefits-list {
  display: flex;
  flex-wrap: wrap;
}

.benefits-list-item {
  flex-basis: calc((100% - 148px) / 2);
}

.benefits-list-item:not(:nth-child(2n)) {
  margin-right: 148px;
}

.benefits-list-item:not(:nth-last-child(-n + 2)) {
  margin-bottom: 60px;
}

.benefits-list-title,
.gallery-title {
  margin-bottom: 24px;

  font-size: 24px;
  line-height: calc(36 / 24);
  color: var(--title-txt-cl);
}

.benefits-list-descr,
.gallery-text {
  margin-bottom: 32px;

  font-size: 18px;
  line-height: calc(30 / 18);
  color: var(--main-txt-cl);
}

/* Gallery */

.gallery-list-item {
  display: flex;
  gap: 84px;
  align-items: center;
  padding: 80px;
}

.gallery-list-item:nth-child(2n) {
  flex-direction: row-reverse;
  background-color: var(--grey-bg-cl);
}

/* Partners */
.partners-title {
  margin-bottom: 30px;

  text-align: center;
}

.partners-descr {
  margin-bottom: 80px;
  margin-left: auto;
  margin-right: auto;
  max-width: 1392px;

  font-size: 36px;
  line-height: calc(50 / 36);
  color: var(--title-txt-cl);
  text-align: center;
}

.partners-list {
  display: flex;
  column-gap: 84px;
  row-gap: 64px;
  flex-wrap: wrap;
  max-width: 950px;
  margin-left: auto;
  margin-right: auto;
}

/* Subscribe */
.subscribe-section {
  background-color: var(--grey-bg-cl);
}

.subscribe-wrapper {
  display: flex;
  align-items: center;
}

.subscribe-descr {
  max-width: 943px;
  margin-right: 84px;
  font-size: 36px;
  line-height: calc(50 / 36);
  color: var(--title-txt-cl);
  text-align: left;
}

.subscribe-list {
  display: flex;
  gap: 45px;
}

.hero-btn.subscribe {
  color: var(--accent-cl);
  background-color: var(--white-cl);
  border-radius: 6px;
  border: 1px solid #18a0fb;
}

.hero-btn.subscribe:hover,
.hero-btn.subscribe:focus {
  background-color: var(--accent-cl);
  color: var(--white-cl);
}

/* Socials icons */

.socials {
  display: flex;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.socials-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;

  /* outline: 1px solid tomato; */
  background-color: rgb(245, 240, 240);
  color: rgb(63, 139, 220);

  transition: color 250ms linear;
}

.socials-link:hover,
.socials-link:focus {
  background-color: rgb(63, 139, 220);
  color: rgb(245, 240, 240);
}

.socials-link .icon {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* train with 2 colors icons */
.colors {
  display: flex;
}

.color-item {
  --color1: red;
  --color2: lightblue;

  position: relative;

  cursor: pointer;
}

.color-item:hover,
.color-item:focus {
  --color1: black;
  --color2: yellow;
}

.color-item:hover .submenu {
  opacity: 1;
  transform: translateY(0);
  pointer-events: initial;
}

.submenu {
  position: absolute;
  /* z-index: 22; */
  top: 100%;
  left: 0;
  background-color: #ccc;
  opacity: 0;
  transform: translateY(-100%);
  transition: all 250ms ease-in;
  pointer-events: none;
}