:root {
  --clr-700: #162542;
  --clr-300: #f16718;
  --clr-200: #7b8bad;
  --clr-100: #fff;

  --fs-h1: 4.8rem;
  --fs-h1-desktop: 5.6rem;
  --fs-h2: 2.4rem;

  --lh-h1: 100%;
  --lh-h2: 112%;

  --fw-regular: 500;
  --fw-bold: 700;
  --fw-bolder: 900;
}

html {
  font-size: 62.5%;
  overflow-x: hidden;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: "Barlow", sans-serif;
  font-size: 16px;
  line-height: 26px;
  line-height: 162%;
  color: var(--clr-200);
  font-weight: var(--fw-regular);
  overflow-x: hidden;
}
h1,
h2 {
  color: var(--clr-700);
  font-weight: var(--fw-bolder);
  text-transform: uppercase;
}
h4 {
  font-weight: var(--fw-bold);
  text-transform: uppercase;
}
h2 {
  line-height: var(--lh-h2);
}
.flexbox {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3.2rem;
}
.flexbox-order {
  display: flex;
  align-items: center;
  gap: 3.2rem;
}
.flexbox-column {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 3.2rem;
}
.container {
  padding: 2.4rem 2.4rem 4.8rem 2.4rem;
}
.container-layout {
  padding: 0;
}

/* HEADER */
header {
  margin-bottom: 6.4rem;
}
header h4 {
  text-transform: uppercase;
  padding: 1.1rem 1.4rem;
  background: #e8eff2;
  border-radius: 8px;
  color: var(--clr-700);
}
/* CTA */
.CTA {
  margin-bottom: 6.4rem;
}
h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-h1);
  text-transform: uppercase;
}
.pre-order {
  padding: 1.1rem 1.4rem;
  text-transform: uppercase;
  color: var(--clr-100);
  background: var(--clr-300);
  border-radius: 8px;
}
.release {
  text-transform: uppercase;
}
.bg-keyboard {
  background-image: url(assets/mobile/image-keyboard.jpg);
  width: max(372px, 100%);
  height: 331px;
  border-radius: 20px;
  object-fit: cover;
  background-repeat: no-repeat;
  background-size: cover;
}
.gray-block {
  display: none;
}
.gray-block-2 {
  display: none;
}
/* PREVIEW */
.preview {
  text-align: center;
  margin-top: 2.4rem;
  margin-bottom: 11rem;
}
.text-box-flex {
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
}
.img-box-flex {
  display: flex;
  gap: 2.4rem;
  justify-content: right;
}
.keyboard-phone {
  background-image: url(assets/mobile/image-phone-and-keyboard.jpg);
  border-radius: 20px;
  background-color: var(--clr-300);
  background-blend-mode: multiply;
  width: max(129px, 39%);
  height: 193px;
  background-size: cover;
  flex-shrink: 0;
}
.keyboard-glass {
  background-image: url(assets/mobile/image-glass-and-keyboard.jpg);
  border-radius: 20px;
  width: max(220px, 65%);
  height: 193px;
  background-size: cover;
  flex-shrink: 0;
}
.text-box {
  margin-top: 7.5rem;
}
.text-box h2 {
  font-size: 3.2rem;
  line-height: var(--lh-h2);
  margin-inline: 6rem;
}
/* FEATURES */
.features {
  margin-bottom: 9.6rem;
  display: flex;
  flex-direction: column;
  gap: 6.4rem;
  justify-content: space-between;
}
.box {
  display: flex;
  flex-direction: column;
  gap: 2.4rem;
  text-align: center;
  justify-content: space-between;
  align-items: center;
}
.box img {
  margin-bottom: 2.4rem;
  padding: 2rem;
  background: var(--clr-300);
  width: 65px;
  height: 65px;
  border-radius: 16px;
}
.box h2 {
  line-height: 117%;
}
/* FOOTER */
span {
  font-weight: var(--fw-bold);
}
footer {
  text-align: center;
}
header a:link,
header a:visited {
  color: var(--clr-700);
  text-decoration: none;
}
section a:link,
section a:visited {
  color: var(--clr-100);
  text-decoration: none;
}
@media screen and (min-width: 768px) {
  .container {
    padding: 4rem;
  }
  /* HEADER */
  header h4 {
    padding: 1.6rem 2.6rem;
  }
  .CTA {
    margin-bottom: unset;
  }
  .pre-order {
    padding: 1.6rem 2.6rem;
  }
  .keyboard {
    display: none;
  }
  .flexbox-column {
    gap: 3.6rem;
  }
  .tablet-layout {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 6.9rem;
  }
  .tablet-layout .CTA {
    width: 339px;
    flex-shrink: 0;
  }
  .bg-keyboard {
    width: max(478px, 64%);
    height: 425px;
    background-image: url(assets/tablet/image-keyboard.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    flex-shrink: 0;
    border-radius: 16px;
  }
  /* PREVIEW */
  .preview {
    text-align: start;
    margin-top: 4rem;
    margin-bottom: 14rem;
  }
  .text-box-flex {
    display: flex;
    flex-direction: row;
    gap: 5rem;
    align-items: center;
    justify-content: space-between;
  }
  .img-box-flex {
    gap: 3rem;
    justify-content: space-between;
  }
  .keyboard-phone {
    background-image: url(assets/tablet/image-phone-and-keyboard.jpg);
    width: max(214px, 31%);
    height: 320px;
  }
  .keyboard-glass {
    background-image: url(assets/tablet/image-glass-and-keyboard.jpg);
    width: max(445px, 64%);
    height: 320px;
  }
  .text-box {
    margin-top: 7rem;
  }
  .text-box h2 {
    margin-inline: unset;
  }
  /* FEATURES */
  .features {
    margin-bottom: 14rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 7rem;
    justify-content: space-between;
    margin-right: 4.8rem;
    justify-items: center;
  }
  .box {
    display: flex;
    flex-direction: column;
    gap: 2.4rem;
    text-align: start;
    justify-content: space-between;
    align-items: start;
    max-width: 285px;
  }
  .box img {
    margin-bottom: 1.6rem;
  }
}
@media screen and (min-width: 1440px) {
  .container {
    padding: 5.5rem 16.5rem 4rem 16.5rem;
  }
  h1 {
    font-size: var(--fs-h1-desktop);
  }
  /* HEADER */
  header {
    margin-bottom: 8.3rem;
  }
  .flexbox-column {
    gap: 2.4rem;
  }
  .flexbox-order {
    margin-top: 1.6rem;
  }
  .tablet-layout {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12.5rem;
    position: relative;
  }
  .tablet-layout .CTA {
    width: max(445px);
    flex-shrink: 0;
  }
  .bg-keyboard {
    width: max(540px, 46%);
    height: 480px;
    background-image: url(assets/desktop/image-keyboard.jpg);
    flex-grow: 1;
  }
  .gray-block {
    display: block;
    align-self: flex-start;
    margin-left: -95px;
    max-width: 255px;
    position: absolute;
    top: 0;
    right: -285px;
  }
  /* PREVIEW */
  .preview {
    margin-top: 3rem;
    margin-bottom: 16.8rem;
    display: flex;
    gap: 12.5rem;
    align-items: center;
    justify-content: space-between;
    position: relative;
  }
  .text-box-flex {
    flex-direction: column;
    gap: 2.7rem;
    align-items: start;
    justify-content: start;
    width: 255px;
  }
  .img-box-flex {
    gap: 3rem;
    justify-content: space-between;
    flex-grow: 1;
  }
  .keyboard-phone {
    background-image: url(assets/desktop/image-phone-and-keyboard.jpg);
    width: max(255px, 34%);
    height: 480px;
  }
  .keyboard-glass {
    background-image: url(assets/desktop/image-glass-and-keyboard.jpg);
    width: max(445px, 61%);
    height: 480px;
  }
  .text-box {
    margin-top: 7rem;
  }
  .gray-block-2 {
    display: block;
    max-width: 255px;
    position: absolute;
    bottom: 0;
    max-height: 236px;
    left: -285px;
  }
  /* FEATURES */
  .features {
    margin-bottom: 12.8rem;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 3rem;
    justify-content: space-between;
    margin-right: unset;
    justify-items: center;
  }
  .box {
    display: flex;
    flex-direction: column;
    gap: 2.4rem;
    text-align: start;
    justify-content: space-between;
    align-items: start;
    max-width: 285px;
  }
  .box img {
    margin-bottom: 2.4rem;
  }
  header h4:hover {
    cursor: pointer;
    background: var(--clr-700);
    transition: 0.5s ease-in-out;
  }
  header h4:hover a {
    color: var(--clr-100);
    transition: 0.5s ease-in-out;
  }
  .pre-order:hover {
    cursor: pointer;
    background: #ff9b62;
    transition: 0.4s ease-in-out;
  }
}