/* Begin of CSS reset, credits: https://www.joshwcomeau.com/css/custom-css-reset/ */

/* 1. Use a more-intuitive box-sizing model */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* 2. Remove default margin */
*:not(dialog) {
  margin: 0;
}

/* 3. Enable keyword animations */
@media (prefers-reduced-motion: no-preference) {
  html {
    interpolate-size: allow-keywords;
  }
}

body {
  /* 4. Increase line-height */
  line-height: 1.5;
  /* 5. Improve text rendering */
  -webkit-font-smoothing: antialiased;
}

/* 6. Improve media defaults */
img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

/* 7. Inherit fonts for form controls */
input,
button,
textarea,
select {
  font: inherit;
}

/* 8. Avoid text overflows */
p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

/* 9. Improve line wrapping */
p {
  text-wrap: pretty;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  text-wrap: balance;
}

/*
  10. Create a root stacking context
*/
#root,
#__next {
  isolation: isolate;
}

/* Issue arised, browser defautl heading styling beat inheritance */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: inherit;
}

/* End of CSS reset */


/* General Rules */
:root {
  --cyan-600: #4d96a9;
  --cyan-300: #8fe3f9;
  --purple-600: #855fb1;
  --purple-300: #d9b8ff;
  --slate-900: #28283d;
  --slate-600: #87879d;
  --slate-300: #d1d1df;
  --white: #fafafa;

  --font-family: "Red Hat Display", sans-serif;
  --font-weight-medium: 500;
  --font-weight-black: 900;

  --timeline-height: 5rem;
}


body {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background-color: var(--white);
  font-family: var(--font-family);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
  padding: 2rem;
  max-width: 34rem;
}

.text-content h2 {
  color: var(--slate-900);
  text-align: center;
  font-size: 2rem;
  font-weight: var(--font-weight-black);
  line-height: 1.1;
}

.text-content p {
  color: var(--slate-600);
  text-align: center;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  line-height: 1.5;
}

.timeline-node {
  aspect-ratio: 1 / 1;
  width: 3.5rem;
  height: 3.5rem;
  color: var(--slate-600);
  font-size: 1rem;
  font-weight: var(--font-weight-black);
  line-height: 1.5;
  position: relative;
  text-align: center;
  padding: 1rem;
  border: 1px solid var(--slate-300);
  border-radius: 50%;
  margin-top: var(--timeline-height);
}

.timeline-node::before {
  position: absolute;
  content: "";
  height: var(--timeline-height);
  width: 1px;
  background-color: var(--slate-300);
  top: 0;
  left: 50%;
  transform: translateY(-100%);
}

/* nav section start */

nav {
  padding-top: 3rem;
  padding-inline: 1.5rem;
  display: flex;
  justify-content: center;
}

/* nav section end */

/* header section start */

header {
  padding-top: 4rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}

header .hero-image {
  display: flex;
  justify-content: center;
  overflow: hidden;
  gap: 1.5rem;
}

header .hero-image .left {
  max-width: 13rem;
}

header .hero-image .right {
  max-width: 13rem;
}

header .text-content .action {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

header .action button {
  padding-block: 1rem;
  padding-inline: 2.5rem;
  border-radius: 1.8125rem;
  font-size: 1rem;
  font-weight: var(--font-weight-black);
  line-height: 1.5;
  color: var(--white);
  border: none;
}

header .action .download {
  background-color: var(--cyan-600);

  span {
    color: var(--cyan-300);
    margin-left: 0.25rem;
  }

  transition: background-color 0.2s ease;
  cursor: pointer;
}

header .action .download:hover {
  background-color: #71C0D4;
}

header .action .what-is-it {
  background-color: var(--purple-600);
  transition: background-color 0.2s ease;
  cursor: pointer;
}

header .action .what-is-it:hover {
  background-color: #B18BDD;
}

/* header section end */

/* main section start */

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 2rem;
  margin-bottom: 4rem;
}

main .main-image {
  display: grid;
  grid-template: repeat(2, 1fr) / repeat(2, 1fr);
  gap: 1rem;
  margin: 4rem 0;
}

main .main-image img {
  border-radius: 1rem;
}

main .title {
  display: flex;
  flex-direction: column;
  align-items: center;
}

main .title p {
  text-align: center;
  text-transform: uppercase;
  color: var(--cyan-600);
  font-size: 1rem;
  font-weight: var(--font-weight-black);
  line-height: 1.1;
  letter-spacing: 0.25rem;
  margin-bottom: 1rem;
}

main .text-content {
  margin-bottom: 4rem;
}

/* main section end */

/* footer section start */

footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-image: linear-gradient(#5697a8e0, #5697a8e0),
    url("./assets/mobile/image-footer.jpg");
  background-size: cover;
  background-position: center;
}

footer .text-content {
  padding-top: 0;
  margin-bottom: 0;
}

footer .text-content h2 {
  color: var(--white);
}

footer .text-content p {
  color: var(--white);
}

footer .timeline-node {
  background-color: var(--white);
  margin-top: 2rem;
  transform: translateY(-105%);
}

footer button {
  background-color: var(--purple-600);
  padding-block: 1rem;
  padding-inline: 2.5rem;
  border-radius: 1.8125rem;
  font-size: 1rem;
  font-weight: var(--font-weight-black);
  line-height: 1.5;
  color: var(--white);
  border: none;
  margin-bottom: 4rem;

  span {
    color: var(--purple-300);
    margin-left: 0.25rem;
  }

  transition: background-color 0.2s ease;
  cursor: pointer;
}

footer button:hover {
  background-color: #B18BDD;
}

/* footer section end */


/* Media Queries */

@media (min-width: 40rem) {

  footer {
    background-image: linear-gradient(#5697a8e0, #5697a8e0),
      url("./assets/tablet/image-footer.jpg");
  }

  header .hero-image {
    gap: 2rem;

    .left {
      max-width: 24.625rem;
    }

    .right {
      max-width: 24.625rem;
    }
  }

  .text-content h2 {
    font-size: 3rem;
  }

  header .text-content .action {
    flex-direction: row;
  }

  main .main-image {
    grid-template: repeat(1, 1fr) / repeat(4, 1fr);
  }

  main .title {
    max-width: 27.8125rem;
  }

  footer .text-content {
    max-width: 48rem;
  }

}

@media (min-width: 66.5rem) {

  footer {
    background-image: linear-gradient(#5697a8e0, #5697a8e0),
      url("./assets/desktop/image-footer.jpg");
  }

  header {
    display: grid;
    grid-template-columns: 1fr minmax(0, 34rem) 1fr;
    align-items: center;
  }

  header .hero-image {
    display: contents;
  }

  header .left {
    grid-column: 1;
    grid-row: 1;
    justify-self: center;
  }

  header .text-content {
    grid-column: 2;
    grid-row: 1;
  }

  header .right {
    grid-column: 3;
    grid-row: 1;
    justify-self: center;
  }

  .text-content h2 {
    font-size: 4rem;
  }

  .text-content p {
    font-size: 1.125rem;
  }

  main .text-content,
  footer .text-content {
    max-width: none;
  }

  main .title {
    max-width: 64rem;
  }
}