@import url("https://fonts.googleapis.com/css2?family=Public+Sans:ital,wght@0,100..900;1,100..900&display=swap");

:root {
  --blue-950: hsl(233, 26%, 24%);
  --green-500: hsl(136, 64%, 51%);
  --cyan-400: hsl(192, 69%, 51%);
  --gray-600: hsl(233, 8%, 62%);
  --gray-100: hsl(220, 16%, 96%);
  --gray-50: hsl(0, 0%, 98%);
  --white: hsl(0, 100%, 100%);
  --main-section-padding: 50px;
  --main-transition-duration: 0.3s;
}

html {
  scroll-behavior: smooth;
}

#backToTop {
  outline: none;
  border: none;
  width: 30px;
  height: 30px;
  padding: 20px;
  background-image: linear-gradient(200deg, var(--green-500), var(--cyan-400));
  color: var(--white);
  border-radius: 50%;
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1001;
  display: none;
  justify-content: center;
  align-items: center;
  transition: var(--main-transition-duration) ease;
  cursor: pointer;
}

#backToTop:hover {
  opacity: 0.5;
}

* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  font-family: "Public Sans", sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body {
  position: relative;
}

.req-invite-btn {
  display: block;
  text-align: center;
  width: 200px;
  color: var(--white);
  background-image: linear-gradient(200deg, var(--green-500), var(--cyan-400));
  outline: none;
  border: none;
  padding: 10px;
  border-radius: 25px;
  font-size: 14px;
  transition: opacity var(--main-transition-duration) ease;
  cursor: pointer;
}

@media (max-width: 767px) {
  .req-invite-btn {
    margin: 0 auto;
  }
}

.req-invite-btn:hover {
  opacity: 0.5;
}

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

a {
  text-decoration: none;
}

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

.container {
  width: 100%;
  max-width: 100%;
  padding-left: 15px;
  padding-right: 15px;
  margin: 0 auto;
}

@media (min-width: 576px) {
  .container {
    max-width: 540px;
  }
}

@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }
}

@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--white);
  height: 70px;
  box-shadow: 0px 1px 1px 1px #eaeaea;
  position: relative;
  z-index: 999;
}

header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
  gap: 20px;
}

.hamburger {
  width: 30px;
  height: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  height: 3px;
  background: var(--blue-950);
  border-radius: 2px;
  transition: all var(--main-transition-duration) ease;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

nav {
  position: fixed;
  z-index: 1001;
  width: 90%;
  top: 70px;
  transition: all calc(var(--main-transition-duration) * 3) ease;
}

@media (max-width: 767px) {
  nav {
    left: 50%;
    transform: translate(100%, 30px);
    visibility: hidden;
    opacity: 0;
  }
}

nav.active {
  visibility: visible;
  opacity: 1;
  transform: translate(-50%, 30px);
}

#overlay {
  width: 100%;
  height: 100%;
  background-color: #000000ad;
  position: absolute;
  display: none;
}

#overlay.active {
  display: block;
}

nav ul {
  width: 100%;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  background-color: var(--white);
  border-radius: 10px;
  /* box-shadow: 0px 10px 20px 20px rgba(0, 0, 0, 0.5); */
}

nav ul li {
  width: 100%;
}

nav ul li a {
  display: block;
  width: 100%;
  text-align: center;
  padding: 10px 0;
  color: var(--gray-600);
  position: relative;
  transition: color var(--main-transition-duration) ease;
}

nav ul li a::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--green-500);
  border-radius: 3px;
  transition: width calc(var(--main-transition-duration) * 2) ease;
}

nav ul li a:hover {
  color: var(--blue-950);
}

nav ul li a:hover::before {
  width: 100%;
}

@media (min-width: 768px) {
  .hamburger {
    display: none;
  }
  nav {
    display: block;
    position: relative;
    top: 0;
  }
  nav ul {
    flex-direction: row;
    background-color: transparent;
    padding: 0;
    box-shadow: none;
  }
  nav ul li {
    width: initial;
  }
  nav ul li a {
    padding: 26px 10px;
    width: initial;
  }
  nav ul li a::before {
    transition-duration: var(--main-transition-duration);
  }
}

@media (max-width: 767px) {
  header .req-invite-btn {
    display: none;
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.landing {
  height: calc(100vh - 70px);
  position: relative;
  display: flex;
  justify-content: center;
  padding-bottom: var(--main-section-padding);
}

@media (min-width: 768px) {
  .landing {
    overflow: hidden;
    padding-bottom: 0;
  }
}

.landing .container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

@media (min-width: 768px) {
  .landing .container {
    flex-direction: row-reverse;
    justify-content: center;
    align-items: center;
    gap: 30px;
  }
}

.landing .bg {
  position: absolute;
  width: 100%;
}

.bg.desk {
  transform: translate(50%, 0) scale(1.2);
}

.landing .bg img {
  width: 100%;
}

@media (max-width: 767px) {
  .landing .bg img {
    max-height: 660px;
  }
}

@media (max-width: 575px) {
  .landing .bg img {
    max-height: 450px;
  }
}

@media (max-width: 399px) {
  .landing .bg img {
    max-height: 530px;
  }
}

.landing .container .mockups {
  width: 100%;
  position: relative;
  top: -50px;
}

.landing .container .mockups img {
  max-width: 100%;
}

@media (min-width: 768px) {
  .landing .container .mockups img {
    max-width: 160%;
  }
}

.landing .landing-text {
  text-align: center;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .landing .landing-text {
    text-align: left;
    flex: 700px;
  }
}

@media (max-width: 767px) {
  .landing .landing-text {
    max-width: 500px;
  }
}

.landing .landing-text h1 {
  font-weight: 400;
  color: var(--blue-950);
}

.landing .landing-text p {
  font-size: 15px;
  margin: 20px 0;
  color: var(--gray-600);
}

.why-choose {
  padding: var(--main-section-padding) 0;
  background-color: var(--gray-100);
}

.why-choose .container {
  text-align: center;
}

.why-choose .container .text {
  margin-bottom: 50px;
}

.why-choose .container .text h2 {
  font-weight: normal;
  color: var(--blue-950);
  margin-bottom: 20px;
}

.why-choose .container .text p {
  line-height: 1.5;
  color: var(--gray-600);
  font-size: 14px;
}

.why-choose .container .features .feature {
  margin-bottom: 50px;
}

.why-choose .container .features .feature .image {
  margin-bottom: 25px;
}

.why-choose .container .features .feature h3 {
  font-weight: normal;
  color: var(--blue-950);
  margin-bottom: 20px;
}

.why-choose .container .features .feature p {
  line-height: 1.5;
  color: var(--gray-600);
  font-size: 14px;
}

@media (min-width: 768px) {
  .why-choose .container {
    text-align: left;
  }
  .why-choose .container .text {
    max-width: 700px;
  }
  .why-choose .container .features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
  }
}

.last-articles {
  padding: var(--main-section-padding) 0;
}

.last-articles .container > h2 {
  font-weight: normal;
  color: var(--blue-950);
  margin-bottom: 30px;
  text-align: center;
  font-size: 30px;
}

.last-articles .container .articles {
  display: grid;
  gap: 20px;
}

@media (min-width: 768px) {
  .last-articles .container .articles {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }
}

.last-articles .container .articles .article {
  background-color: var(--gray-100);
  border-radius: 10px;
}

.last-articles .container .articles .article .image {
  display: flex;
  overflow: hidden;
}

.last-articles .container .articles .article .image img {
  width: 100%;
  height: 250px;
  border-radius: 10px 10px 0 0;
  object-fit: cover;
}

.last-articles .container .articles .article .article-info {
  padding: 30px;
}

.last-articles .container .articles .article .article-info span {
  display: block;
  font-size: 12px;
  color: var(--gray-600);
  margin-bottom: 10px;
}

.last-articles .container .articles .article .article-info h3 {
  font-weight: normal;
  color: var(--blue-950);
  margin-bottom: 10px;
  transition: color var(--main-transition-duration) ease;
}

.last-articles .container .articles .article .article-info h3:hover {
  color: var(--green-500);
}

.last-articles .container .articles .article .article-info p {
  color: var(--gray-600);
  line-height: 1.5;
  font-size: 14px;
}

footer {
  padding: var(--main-section-padding) 0;
  background-color: var(--blue-950);
  color: var(--white);
}

footer .container {
  display: grid;
}

@media (min-width: 768px) {
  footer .container {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
  }
}

footer .container .logo-social ul {
  display: flex;
  align-items: center;
  margin-top: 10px;
}

footer .container div:not(.invite-copy) a {
  display: block;
  color: var(--white);
  padding: 5px;
  transition: color var(--main-transition-duration) ease;
}

footer i {
  font-size: 18px;
}

footer .container div:not(.invite-copy) a:hover {
  color: var(--green-500);
}

footer .container .invite-copy {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

footer .container .invite-copy p {
  color: var(--gray-600);
}

footer .me {
  color: var(--cyan-400);
  font-weight: bold;
  transition: var(--main-transition-duration) ease;
}

footer .copy:first-of-type {
  margin: 5px 0;
}

footer .me:hover {
  color: var(--green-500);
}

@media (max-width: 767px) {
  footer .container {
    justify-content: center;
    text-align: center;
    gap: 10px;
  }
  footer .container .logo-social ul {
    justify-content: center;
  }
  footer .container .invite-copy {
    align-items: center;
  }
  footer .container .invite-copy p {
    margin-top: 10px;
  }
}

/* !!!!!!!! */

.landing.active,
.why-choose.active,
.last-articles.active {
  position: relative;
  z-index: -1;
}

/* !!!!!!!! */

.revealY {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.revealY.activeY {
  opacity: 1;
  transform: translateY(0);
}

.revealX {
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.left {
  transform: translateX(-30px);
}

.right {
  transform: translateX(30px);
}

.revealX.active {
  opacity: 1;
  transform: translateX(0);
}